CN110324127B - PDCCH monitoring candidate allocation method and network side equipment - Google Patents
PDCCH monitoring candidate allocation method and network side equipment Download PDFInfo
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- CN110324127B CN110324127B CN201810276551.9A CN201810276551A CN110324127B CN 110324127 B CN110324127 B CN 110324127B CN 201810276551 A CN201810276551 A CN 201810276551A CN 110324127 B CN110324127 B CN 110324127B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0226—Channel estimation using sounding signals sounding signals per se
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- 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
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Abstract
The invention discloses a method for distributing/mapping PDCCH candidates/channel estimation numbers and terminal equipment, wherein the method comprises the following steps: and if the total PDCCH candidate number of the terminal equipment in the current time slot is greater than the maximum PDCCH candidate number supported by the terminal equipment, or the channel estimation number required by the terminal equipment exceeds the maximum channel estimation number supported by the terminal equipment, allocating/mapping PDCCH candidates or channel estimation numbers among a plurality of monitoring opportunities in the current time slot according to at least one type of information, wherein the at least one type of information comprises at least one of OFDM symbol positions of the monitoring opportunities, the priority of a scheduled cell associated with a search space set, service priority, channel priority, DCI formats corresponding to the PDCCH candidates monitored by the search space set, and RNTI. The scheme of the embodiment of the invention can fully utilize the processing capability of the UE, control the resource allocation to the maximum extent, reduce the blocking probability of the control channel allocation and ensure that the processing capability of the UE is not exceeded.
Description
Technical Field
The present invention relates to the field of communications/terminals, and in particular, to a method for allocating PDCCH monitoring candidates and a network side device.
Background
The 5G NR system supports configuring a plurality of Control Resource sets (CORESET) and a plurality of Search Space sets (Search Space Set) for a User Equipment (User Equipment, UE), and flexibly configuring a Physical Downlink Control Channel (PDCCH) candidate number for each Search Space Set. Listening for a search space set may be any one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols within a slot (slot), and multiple search space sets may partially or completely overlap. The current protocol does not specify the allocation of PDCCH candidates or channel estimates.
Disclosure of Invention
The embodiments of the present invention provide a method for allocating PDCCH monitoring candidates and a network side device, so as to fully utilize the processing capability of a UE, maximize control resource allocation, reduce the blocking probability of control channel allocation, and ensure that the processing capability of the UE is not exceeded.
In a first aspect, a method for allocating PDCCH monitoring candidates is provided, and the method includes: and if the total PDCCH candidate number of the terminal equipment in the current time slot is larger than the maximum PDCCH candidate number supported by the terminal equipment, or the total required channel estimation number of the terminal equipment exceeds the maximum channel estimation number supported by the terminal equipment, allocating/mapping PDCCH candidates or channel estimation numbers among a plurality of monitoring opportunities of the current time slot according to at least one information, wherein the at least one information comprises at least one of OFDM symbol positions of the monitoring opportunities, priorities of scheduled cells associated with the search space sets, priorities of services, priorities of channels, DCI formats corresponding to the PDCCH candidates monitored by the search space sets and RNTIs.
In a second aspect, a terminal device is provided, which includes:
an allocation/mapping module, configured to allocate/map PDCCH candidates or channel estimates among multiple monitoring opportunities in a current time slot according to at least one type of information if a total number of PDCCH candidates for the terminal device in the current time slot is greater than a maximum number of PDCCH candidates supported by the terminal device or a total number of channel estimates required by the terminal device exceeds a maximum number of channel estimates supported by the terminal device,
the at least one type of information includes at least one of an OFDM symbol position of the monitoring opportunity, a priority of a scheduled cell associated with the search space set, a priority of a service, a priority of a channel, a DCI format corresponding to a PDCCH candidate monitored by the search space set, and an RNTI.
In a third aspect, a terminal device is provided, the terminal device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to the first aspect.
In a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the method according to the first aspect.
In the embodiment of the present invention, when the total number of PDCCH candidates of the terminal device in the current time slot is greater than the maximum number of PDCCH candidates supported by the terminal device, or when the total number of channel estimates required by the terminal device exceeds the maximum number of channel estimates supported by the terminal device, the number of PDCCH candidates or channel estimates is allocated/mapped among multiple monitoring opportunities of the current time slot based on at least one of an OFDM symbol position of the monitoring opportunity, a priority of a scheduled cell associated with a search space set, a priority of a service, a priority of a channel, a DCI format corresponding to a PDCCH candidate monitored by the search space set, and an RNTI, so that the processing capability of the terminal device can be fully utilized, control resource allocation is maximized, the control channel allocation blocking probability is reduced, and the processing capability of the terminal device is not exceeded.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a flowchart of a method for allocating PDCCH monitoring candidates according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a terminal device according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. 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 invention.
The technical scheme of the invention can be applied to various communication systems, such as: global System for Mobile communications (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE), Long Term Evolution/enhanced Long Term Evolution (LTE-a), and nr new Radio.
A User Equipment (UE), which may also be referred to as a Mobile Terminal (Mobile Terminal), a Mobile User Equipment (UE), and the like, may communicate with one or more core networks via a Radio Access Network (RAN, Radio Access Network, for example), and the User Equipment may be a Mobile Terminal, such as a Mobile phone (or referred to as a "cellular" phone) and a computer having a Mobile Terminal, such as a portable, pocket, handheld, computer-included, or vehicle-mounted Mobile device, and may exchange languages and/or data with the Radio Access Network.
The Base Station may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, or an evolved Node B (eNB or e-NodeB) and a 5G Base Station (gNB) in LTE.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
To reduce the implementation complexity of the UE, the NR system specifies the maximum number of PDCCH candidates (i.e., the total number of blind detections) for the UE in one slot.
The Channel estimation of the UE is performed in units of Control Channel Elements (CCEs), and PDCCH candidates assigned the same CCE may share the result of Channel estimation on the CCE, and the number of Channel estimates, that is, the number of non-overlapping CCEs assigned to the PDCCH candidates. In the NR system, the positions of PDCCH candidates (equivalent to the numbers of CCEs to which they are allocated) at different Aggregation Levels (AL) within a search space are determined by a pseudo random function (hash function). Therefore, according to the hash result of the hash function, CCEs allocated to different AL blind test candidates may be the same or different. Therefore, the total number of channel estimates needed for the blind search space varies at different time points. The NR system specifies an upper limit of the number of non-overlapping CCEs allocated by PDCCH candidates that the UE monitors in one slot, i.e., the maximum number of channel estimates.
If a search space set has multiple monitoring opportunities with different starting symbols in a time slot, or the monitoring opportunities of multiple search space sets fall on the same or different starting symbols in the same time slot, the total number of blind detections (i.e., the total number of PDCCH candidates) of a UE in a time slot may exceed the maximum number of PDCCH candidates supported, or the number of channel estimates exceeds the maximum number of channel estimates. In this case, a suitable scheme is needed to reasonably allocate PDCCH candidates among multiple monitoring opportunities in the same time slot and among multiple search space sets with overlapping time domains.
Fig. 1 is a flowchart of a method for allocating PDCCH monitoring candidates according to an embodiment of the present application. The method of fig. 1 is applied to a terminal device. The method of fig. 1 may include:
s110, if the total number of PDCCH candidates of the terminal device in the current time slot is greater than the maximum number of PDCCH candidates supported by the terminal device, or the total number of channel estimates required by the terminal device exceeds the maximum number of channel estimates supported by the terminal device, allocating/mapping the number of PDCCH candidates or channel estimates among the multiple monitoring opportunities of the current time slot according to at least one information.
The at least one type of information includes at least one of an OFDM symbol position of the monitoring opportunity, a priority of a scheduled cell associated with the search space set, a priority of a service, a priority of a channel, a DCI format corresponding to a PDCCH candidate monitored by the search space set, and an RNTI.
In the embodiment of the invention, when the total PDCCH candidate number of the terminal equipment in the current time slot is greater than the maximum PDCCH candidate number supported by the terminal equipment, or when the total required channel estimation number of the terminal equipment exceeds the maximum channel estimation number supported by the terminal equipment, the PDCCH candidates or the channel estimation number are distributed/mapped among a plurality of monitoring opportunities of the current time slot based on at least one of the OFDM symbol position of the monitoring opportunity, the priority of a scheduled cell associated with a search space set, the priority of a service, the priority of a channel, the DCI format corresponding to the PDCCH candidates monitored by the search space set and the RNTI, so that the processing capability of the terminal equipment can be fully utilized, the control resource distribution is maximized, the control channel distribution blocking probability is reduced, and the processing capability of the terminal equipment is guaranteed not to be exceeded.
Optionally, in some embodiments, the search space set listened to by the terminal device in the current time slot includes one or more search spaces, and at least one search space set in the one or more search space sets has multiple listening opportunities;
wherein, step S110 may be specifically implemented as:
and allocating/mapping the PDCCH candidates or the channel estimation numbers in equal proportion among the plurality of monitoring opportunities according to the OFDM symbol positions of the plurality of monitoring opportunities in the current time slot.
For example, the total number of listens in a single time slot specified by the protocol is at most 44. The network configures a search space set S1 for the UE, where the monitored symbols O of the search space set are symbol 4 and symbol 8, the CORESET time domain length is 2 symbols, and the total number of PDCCH candidates required for each monitoring opportunity is 40. The total number of PDCCH candidates requiring blind detection is 80, exceeding the maximum number of listening.
At this time, the UE may allocate/map the two monitoring opportunities in equal proportion according to the maximum monitoring number, and allocate/map 22 blind detections to each monitoring opportunity, thereby ensuring that the total number of PDCCH candidates in the time slot does not exceed the maximum monitoring number of PDCCH candidates.
Optionally, in some embodiments, the search space set listened to by the terminal device in the current time slot includes one or more search spaces, and at least one search space set in the one or more search space sets has multiple listening opportunities;
wherein, step S110 may be specifically implemented as:
the number of PDCCH candidates or channel estimates needed for one or more specific monitoring opportunities is preferentially allocated/mapped among the plurality of monitoring opportunities according to the OFDM symbol positions of the plurality of monitoring opportunities within the current time slot.
Further, the OFDM symbol of the control resource set CORESET corresponding to the specific listening opportunity is specified by a protocol or configured by RRC signaling.
Preferably, the OFDM symbol of the control resource set CORESET corresponding to the specific listening opportunity falls within the first N symbols of the current time slot, and a value of N is configured by an RRC signaling, or the value of N is determined by a first DMRS position value of a PDSCH mapping type a (mapping type a) in system information broadcast by the network. In particular, N takes the value 2 or 3.
For example, the total number of listens in a single time slot specified by the protocol is at most 44. The value of N is indicated to be 3 in the system information broadcasted by the network, and the network configures a search space set S1 for the UE, the monitoring symbols O of the search space set are symbols 0, 4, and 8, the CORESET time domain length is 2 symbols, and the total number of PDCCH candidates required for each monitoring opportunity is 20. The total number of PDCCH candidates requiring blind detection is 60, exceeding the maximum number of listening.
The OFDM symbols of the CORESET corresponding to the first listening opportunity are 0 and 1, and both fall within the first three symbols of the slot. The UE may preferentially allocate/map the PDCCH candidates required for the monitoring opportunity, where the first monitoring opportunity is allocated to 20 blind tests, and the second and third monitoring opportunities are allocated to 11 blind tests, respectively, so as to ensure that the total number of PDCCH candidates in the time slot does not exceed the maximum PDCCH candidate monitoring number.
Since the first monitored CORESET within the first three OFDM symbols often multiplexes more UEs, the method ensures that the first monitored CORESET has more blind PDCCH candidates, thereby reducing the probability of control channel blocking.
Optionally, in some embodiments, the number of search space sets monitored by the terminal device in the current timeslot is 1, and the search space set has multiple monitoring opportunities;
wherein, step S110 may be specifically implemented as:
based on the minimum number of monitoring candidates that guarantee a particular monitoring opportunity, each of one or more particular monitoring opportunities is assigned/mapped a number of PDCCH candidates or channel estimates that is not less than the minimum number of monitoring candidates.
Further, the minimum listening candidate is predefined; alternatively, the minimum listening candidate is configured by higher layer signaling.
For example, the total number of listens in a single time slot specified by the protocol is at most 44. The network configures a search space set S1 for the UE, where the monitored symbols O are symbol 4, symbol 6, and symbol 8, the CORESET time domain length is 3 symbols, and the total number of PDCCH candidates required for each monitoring opportunity is 30. The total number of PDCCH candidates requiring blind detection is 90, exceeding the maximum number of listening. The network is configured (or protocol predefined) with a minimum listening candidate of 20 for each of the first listening opportunity and the second listening opportunity.
At this time, the UE may allocate the minimum monitoring candidate (20) for the first monitoring opportunity, allocate the minimum monitoring candidate (20) for the second monitoring opportunity, and allocate 4 monitoring candidates for the third monitoring opportunity, thereby ensuring that the total number of PDCCH candidates in the time slot does not exceed the maximum PDCCH candidate monitoring number.
Wherein, step S110 may be specifically implemented as:
based on the minimum number of monitoring candidates that warrant a particular monitoring opportunity, a total number of PDCCH candidates or channel estimates that is no less than the minimum number of monitoring candidates is allocated/mapped for one or more particular monitoring opportunities.
Further, the minimum listening candidate is predefined; alternatively, the minimum listening candidate is configured by higher layer signaling.
As another example, the total number of listens in a single time slot specified by the protocol is at most 44. The network configures a search space set S1 for the UE, where the monitored symbols O are symbol 4, symbol 6, and symbol 8, the CORESET time domain length is 3 symbols, and the total number of PDCCH candidates required for each monitoring opportunity is 30. The total number of PDCCH candidates requiring blind detection is 90, exceeding the maximum number of listening. The network is configured (or protocol predefined) with a minimum listening candidate of 30 for both the first listening opportunity and the second listening.
At this time, the UE may allocate/map 15 listening candidates for the first listening opportunity, and allocate/map 15 listening candidates for the second listening opportunity, both of which reach the minimum listening candidate (30); meanwhile, the UE allocates/maps 14 monitoring candidates for the third monitoring opportunity, thereby ensuring that the total number of PDCCH candidates in the time slot does not exceed the maximum PDCCH candidate monitoring number.
Optionally, in some embodiments, the number of search space sets monitored by the terminal device in the current time slot is multiple, and at least one search space set in the multiple search space sets has multiple monitoring opportunities;
wherein, step S110 may be specifically implemented as:
the number of PDCCH candidates or channel estimates needed for one or more specific monitoring opportunities is preferentially allocated/mapped among the plurality of monitoring opportunities according to at least one of the type of search space set, the DCI format being monitored, the RNTI.
For example, the total number of listens in a single time slot specified by the protocol is at most 44. The network configures two search space sets for the UE S1 and S2, S1 being a common search space and S2 being a UE-specific search space. Listening symbol O of S1 is OFDM symbol 0, and listening symbol O of S2 is OFDM symbols 4, 8. The CORESET time domain length is 2 symbols. The total number of blind tests required for each listening opportunity is 20. The total number of PDCCH candidates requiring blind detection is 60, exceeding the maximum number of listening.
At this time, the UE may preferentially allocate/map the PDCCH monitoring candidates for the common search space, so that the monitoring opportunity of symbol 0 is allocated/mapped to 20 PDCCH monitoring candidates, and the monitoring opportunities of symbol 4 and symbol 8 are allocated/mapped to 12 PDCCH monitoring candidates, respectively.
It should be appreciated that the present approach is advantageous to guarantee the number of listening candidates required for certain high priority search spaces, such as common search spaces. In addition, the method is also suitable for the condition that the DCI formats or RNTIs monitored by a plurality of search space sets are different, and the monitoring of the DCI of certain specific formats (for example, DCI formats 1-0) or the DCI scrambled by certain specific RNTIs (for example, Slot Format Indicator RNTIs) can be ensured.
Optionally, in some embodiments, the number of search space sets monitored by the terminal device in the current time slot is multiple, and at least one search space set in the multiple search space sets has multiple monitoring opportunities;
wherein, step S110 may be specifically implemented as:
the number of PDCCH candidates or channel estimates needed for one or more specific monitoring opportunities is preferentially allocated/mapped based on at least one of the type of scheduled cell, the priority of the traffic, the priority of the channel associated with the search space set.
For example, the total number of listens in a single time slot specified by the protocol is at most 44. The network configures the UE with two search space sets S1 and S2, S1 for receiving DCI of the primary cell, and S2 for receiving DCI of the secondary cell. Listening symbol O of S1 is OFDM symbol 0, and listening symbol O of S2 is OFDM symbols 4, 8. The CORESET time domain length is 2 symbols. The total number of blind tests required for each listening opportunity is 20. The total number of PDCCH candidates requiring blind detection is 60, exceeding the maximum number of listening.
At this time, the UE may preferentially allocate/map the PDCCH monitoring candidates for the primary cell, so that the monitoring opportunity of symbol 0 is allocated/mapped to 20 PDCCH monitoring candidates, and the monitoring opportunities of symbol 4 and symbol 8 are allocated/mapped to 12 PDCCH monitoring candidates, respectively.
It should be appreciated that the present approach is advantageous to guarantee the number of listening candidates required for certain high priority search spaces (e.g., primary cells) or high priority traffic (e.g., high reliability low latency traffic).
Optionally, in some embodiments, the number of search space sets monitored by the terminal device in the current time slot is multiple, and at least one search space set in the multiple search space sets has multiple monitoring opportunities;
wherein, step S110 may be specifically implemented as:
based on the minimum number of monitoring candidates, a number of PDCCH candidates or channel estimates that is not less than the minimum number of monitoring candidates is allocated/mapped for one or more specific monitoring opportunities.
Optionally, the minimum listening candidate number is predefined; alternatively, the minimum listening candidate is configured by higher layer signaling.
For example, the total number of listens in a single time slot specified by the protocol is at most 44. The network configures the UE with two search space sets S1 and S2. Listening symbols O of S1 are OFDM symbols 0, 6, listening symbols O of S2 are OFDM symbols 4, 8. The CORESET time domain length is 2 symbols. The total number of blind tests required for each listening opportunity is 20. The total number of PDCCH candidates requiring blind detection is 80, exceeding the maximum number of listening. In addition, the network is configured (or the protocol predefines) with a minimum listening candidate of 16 for the first listening opportunity.
At this time, the UE may allocate a minimum number of listening candidates (16) for the first listening opportunity and 6 listening candidates for the second listening opportunity of each search space set. At this time, the UE configures a total of 16+16+6+ 6-44 listening candidates, which does not exceed 44 in total. Thus, it can be ensured that the total number of PDCCH candidates within a slot does not exceed the maximum PDCCH candidate monitoring number.
Optionally, in some embodiments, the number of search space sets monitored by the terminal device in the current time slot is multiple, and at least one search space set in the multiple search space sets has multiple monitoring opportunities;
wherein, step S110 may be specifically implemented as:
and according to the initial symbol positions of the plurality of search space sets in the current time slot, sequentially allocating/mapping PDCCH candidates or channel estimation numbers from small to large according to the symbol sequence until no PDCCH candidate resources can be allocated or the residual channel estimation numbers are not enough to allocate more PDCCH candidates.
For example, the total number of listens in a single time slot specified by the protocol is at most 44. The network configures the UE with two search space sets S1 and S2. Listening symbols O of S1 are OFDM symbols 0, 6, listening symbols O of S2 are OFDM symbols 4, 8. The CORESET time domain length is 2 symbols. The total number of blind tests required for each listening opportunity is 16. The total number of PDCCH candidates requiring blind detection is 64, exceeding the maximum number of listening.
At this time, the UE sequentially allocates/maps PDCCH candidates in the order of the symbols from small to large, the first monitoring opportunity (symbol 0) allocates/maps 16 monitoring candidates, the second monitoring opportunity (symbol 4) allocates/maps 16 monitoring candidates, the third monitoring opportunity (symbol 6) allocates/maps 12 monitoring candidates, and the fourth monitoring opportunity allocates/maps a candidate of 0.
It should be appreciated that the method is beneficial to reduce the scheduling processing delay and implementation complexity of the UE.
It should be understood that, in the foregoing embodiments, the assignment/mapping of PDCCH candidates is taken as an example for illustration, and in practical applications, the assignment/mapping may also be performed with respect to the number of channel estimates, and the specific implementation manner of the assignment/mapping of PDCCH candidates in the foregoing examples may be referred to.
It should be understood that the foregoing specific applicable scenarios of the embodiment shown in fig. 1 and the specific embodiment thereof include, but are not limited to, a service scenario of an lte short TTI.
The mobile terminal provided by the embodiment of the present invention can implement each process implemented by the mobile terminal in the method embodiment of fig. 1, and is not described herein again in order to avoid repetition.
Fig. 2 is a block diagram of a mobile terminal according to another embodiment of the present invention. The mobile terminal 200 shown in fig. 2 includes: at least one processor 201, memory 202, at least one network interface 204, and a user interface 203. The various components in mobile terminal 200 are coupled together by a bus system 205. It will be appreciated that the bus system 205 is used to enable communications among the components. The bus system 205 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 205 in fig. 2.
The user interface 203 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.
It will be appreciated that memory 202 in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 202 of the systems and methods described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 202 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 2021 and application programs 2022.
The operating system 2021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application programs 2022 include various application programs such as a Media Player (Media Player), a Browser (Browser), and the like, and are used to implement various application services. A program implementing the method of an embodiment of the present invention may be included in the application 2022.
In the embodiment of the present invention, the mobile terminal 200 further includes: a computer program stored on the memory 202 and executable on the processor 201, the computer program when executed by the processor 201 performing the steps of:
if the total number of PDCCH candidates of the terminal equipment in the current time slot is greater than the maximum number of PDCCH candidates supported by the terminal equipment, or the total number of required channel estimates of the terminal equipment exceeds the maximum number of channel estimates supported by the terminal equipment, allocating/mapping the number of PDCCH candidates or channel estimates among a plurality of monitoring opportunities of the current time slot according to at least one type of information;
the at least one type of information includes at least one of an OFDM symbol position of the monitoring opportunity, a priority of a scheduled cell associated with the search space set, a priority of a service, a priority of a channel, a DCI format corresponding to a PDCCH candidate monitored by the search space set, and an RNTI.
The method disclosed in the above embodiments of the present invention may be applied to the processor 201, or implemented by the processor 201. The processor 201 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 201. The Processor 201 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may reside in ram, flash memory, rom, prom, or eprom, registers, among other computer-readable storage media known in the art. The computer readable storage medium is located in the memory 202, and the processor 201 reads the information in the memory 202 and performs the steps of the above method in combination with the hardware thereof. In particular, the computer-readable storage medium has stored thereon a computer program, which when executed by the processor 201 implements the steps of the method embodiment as described above with respect to fig. 1.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units designed to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described in this disclosure may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this disclosure. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
The mobile terminal 200 can implement the processes implemented by the mobile terminal in the foregoing embodiments, and details are not repeated here to avoid repetition.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the method embodiment shown in fig. 1, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Fig. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 3, the terminal device 300 may include: an assignment/mapping module 310. Wherein the content of the first and second substances,
an allocating/mapping module 310, configured to allocate/map PDCCH candidates or channel estimates among multiple monitoring opportunities in a current time slot according to at least one type of information if a total number of PDCCH candidates of the terminal device in the current time slot is greater than a maximum number of PDCCH candidates supported by the terminal device, or a total number of channel estimates required by the terminal device exceeds a maximum number of channel estimates supported by the terminal device;
the at least one type of information includes at least one of an OFDM symbol position of the monitoring opportunity, a priority of a scheduled cell associated with the search space set, a priority of a service, a priority of a channel, a DCI format corresponding to a PDCCH candidate monitored by the search space set, and an RNTI.
Optionally, in some embodiments, the search space set listened to by the terminal device in the current time slot includes one or more search spaces, and at least one search space set in the one or more search space sets has multiple listening opportunities;
wherein, the allocation/mapping module 310 is specifically configured to:
and allocating/mapping the PDCCH candidates or the channel estimation numbers in equal proportion among the plurality of monitoring opportunities according to the OFDM symbol positions of the plurality of monitoring opportunities in the current time slot.
Optionally, in some embodiments, the search space set listened to by the terminal device in the current time slot includes one or more search spaces, and at least one search space set in the one or more search space sets has multiple listening opportunities;
wherein, the allocation/mapping module 310 is specifically configured to:
the number of PDCCH candidates or channel estimates needed for one or more specific monitoring opportunities is preferentially allocated/mapped among the plurality of monitoring opportunities according to the OFDM symbol positions of the plurality of monitoring opportunities within the current time slot.
Further, the OFDM symbol of the control resource set CORESET corresponding to the specific listening opportunity is specified by a protocol or configured by RRC signaling.
Preferably, the OFDM symbols of the control resource set CORESET corresponding to the specific listening opportunity fall within the first N symbols of the current time slot, and a value of N is configured by an RRC signaling, or a value of N is determined by a first downlink DMRS position value of a PDSCH mapping type a in the broadcasted system information. In particular, N takes the value 2 or 3.
Optionally, in some embodiments, the number of search space sets monitored by the terminal device in the current timeslot is 1, and the search space set has multiple monitoring opportunities;
wherein, the allocation/mapping module 310 is specifically configured to:
allocating/mapping a total number of PDCCH candidates or channel estimates, which is not less than the minimum number of monitoring candidates, for one or more specific monitoring opportunities based on the minimum number of monitoring candidates for which the specific monitoring opportunities are guaranteed; or
Based on the minimum number of monitoring candidates that guarantee a particular monitoring opportunity, each of one or more particular monitoring opportunities is assigned/mapped a number of PDCCH candidates or channel estimates that is not less than the minimum number of monitoring candidates.
Further, the minimum listening candidate is predefined; alternatively, the minimum listening candidate is configured by higher layer signaling.
Wherein, the allocation/mapping module 310 is specifically configured to:
based on the minimum number of monitoring candidates that warrant a particular monitoring opportunity, a total number of PDCCH candidates or channel estimates that is no less than the minimum number of monitoring candidates is allocated/mapped for one or more particular monitoring opportunities.
Optionally, in some embodiments, the number of search space sets monitored by the terminal device in the current time slot is multiple, and at least one search space set in the multiple search space sets has multiple monitoring opportunities;
wherein, the allocation/mapping module 310 is specifically configured to:
the number of PDCCH candidates or channel estimates needed for one or more specific monitoring opportunities is preferentially allocated/mapped among the plurality of monitoring opportunities according to at least one of the type of search space set, the DCI format being monitored, the RNTI.
Optionally, in some embodiments, the number of search space sets monitored by the terminal device in the current time slot is multiple, and at least one search space set in the multiple search space sets has multiple monitoring opportunities;
wherein, the allocation/mapping module 310 is specifically configured to:
the number of PDCCH candidates or channel estimates needed for one or more specific monitoring opportunities is preferentially allocated/mapped based on at least one of the type of scheduled cell, the priority of the traffic, the priority of the channel associated with the search space set.
Optionally, in some embodiments, the number of search space sets monitored by the terminal device in the current time slot is multiple, and at least one search space set in the multiple search space sets has multiple monitoring opportunities;
wherein, the allocation/mapping module 310 is specifically configured to:
based on the minimum number of monitoring candidates, a number of PDCCH candidates or channel estimates that is not less than the minimum number of monitoring candidates is allocated/mapped for one or more specific monitoring opportunities.
Optionally, the minimum listening candidate number is predefined; alternatively, the minimum listening candidate is configured by higher layer signaling.
Optionally, in some embodiments, the number of search space sets monitored by the terminal device in the current time slot is multiple, and at least one search space set in the multiple search space sets has multiple monitoring opportunities;
wherein, the allocation/mapping module 310 is specifically configured to:
and according to the initial symbol positions of the plurality of search space sets in the current time slot, sequentially allocating/mapping PDCCH candidates or channel estimation numbers from small to large according to the symbol sequence until no PDCCH candidate resources can be allocated or the residual channel estimation numbers are not enough to allocate more PDCCH candidates.
The mobile terminal 300 provided in the embodiment of the present invention can implement each process implemented by the mobile terminal in the method embodiment of fig. 1, and is not described herein again to avoid repetition.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a terminal device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (18)
1. A method for allocating/mapping Physical Downlink Control Channel (PDCCH) candidates/channel estimates, which is applied to a terminal device, the method comprising:
if the total number of PDCCH candidates for a terminal device in the current time slot is larger than the maximum number of PDCCH candidates supported by the terminal device, or the total number of channel estimates required by the terminal device exceeds the maximum number of channel estimates supported by the terminal device, the number of PDCCH candidates or channel estimates are allocated/mapped among the plurality of monitoring opportunities of the current time slot according to at least one information, the at least one information comprises at least one of an Orthogonal Frequency Division Multiplexing (OFDM) symbol position of the monitoring opportunity, a priority of a scheduled cell associated with the search space set, a priority of a service, a priority of a channel, a Downlink Control Information (DCI) format corresponding to a PDCCH candidate monitored by the search space set, and a Radio Network Temporary Identifier (RNTI), the number of channel estimates is the number of non-overlapping CCEs allocated to the PDCCH candidate, and the maximum number of channel estimates is the upper limit of the number of non-overlapping CCEs allocated to the PDCCH candidate.
2. The method of claim 1,
the search space sets monitored by the terminal equipment in the current time slot comprise one or more search space sets, and at least one search space set in the one or more search space sets has a plurality of monitoring opportunities;
allocating/mapping a number of PDCCH candidates or channel estimates among the plurality of monitoring opportunities of the current slot according to at least one information, comprising:
and allocating/mapping the PDCCH candidate number or the channel estimation number in equal proportion among the plurality of monitoring opportunities according to the OFDM symbol positions of the plurality of monitoring opportunities in the current time slot.
3. The method of claim 1,
the search space sets monitored by the terminal equipment in the current time slot comprise one or more search space sets, and at least one search space set in the one or more search space sets has a plurality of monitoring opportunities;
allocating/mapping a number of PDCCH candidates or channel estimates among the plurality of monitoring opportunities of the current slot according to at least one information, comprising:
preferentially allocating/mapping the number of PDCCH candidates or channel estimates needed for one or more specific monitoring opportunities among the plurality of monitoring opportunities according to the OFDM symbol positions of the plurality of monitoring opportunities within the current time slot.
4. The method of claim 3,
and the OFDM symbol of the control resource set CORESET corresponding to the specific monitoring opportunity is positioned in the first N symbols of the current time slot, the value of N is configured by RRC signaling, or the value of N is determined by the position value of the first demodulation reference signal DMRS of the physical downlink shared channel PDSCH mapping type A in the broadcasted system information.
5. The method of claim 1,
the search space sets monitored by the terminal equipment in the current time slot comprise one or more search space sets, and at least one search space set in the one or more search space sets has a plurality of monitoring opportunities;
allocating/mapping a number of PDCCH candidates or channel estimates among the plurality of monitoring opportunities of the current slot according to at least one information, comprising:
allocating/mapping a total number of PDCCH candidates or channel estimates, which is not less than the minimum number of monitoring candidates, for one or more specific monitoring opportunities based on the minimum number of monitoring candidates for which the specific monitoring opportunities are guaranteed; or
Allocating/mapping, for each of one or more specific monitoring opportunities, a number of PDCCH candidates or channel estimates that is not less than the minimum number of monitoring candidates, based on the minimum number of monitoring candidates that warrant the specific monitoring opportunity.
6. The method of claim 5,
the minimum listening candidate is predefined; or
The minimum listening candidate is configured by higher layer signaling.
7. The method of claim 1,
the number of the search space sets monitored by the terminal equipment in the current time slot is multiple, and at least one search space set in the multiple search space sets has multiple monitoring opportunities;
allocating/mapping a number of PDCCH candidates or channel estimates among the plurality of monitoring opportunities of the current slot according to at least one information, comprising:
and preferentially allocating/mapping the number of PDCCH candidates or channel estimates needed by one or more specific monitoring opportunities among the plurality of monitoring opportunities according to at least one of the type of the search space set, the DCI format monitored, the type of the scheduled cell associated with the search space set, the priority of the traffic, the priority of the channel, and the RNTI.
8. The method of claim 1,
the number of the search space sets monitored by the terminal equipment in the current time slot is multiple, and at least one search space set in the multiple search space sets has multiple monitoring opportunities;
allocating/mapping a number of PDCCH candidates or channel estimates among the plurality of monitoring opportunities of the current slot according to at least one information, comprising:
and sequentially allocating/mapping PDCCH candidates or channel estimation numbers according to the initial symbol positions of the plurality of search space sets in the current time slot from small to large in symbol order until no PDCCH candidate resources can be allocated or the residual channel estimation numbers are not enough to allocate more PDCCH candidates.
9. A terminal device, comprising:
an allocating/mapping module, configured to allocate/map PDCCH candidates or channel estimates among multiple monitoring opportunities of a current time slot according to at least one type of information if a total number of PDCCH candidates of a terminal device in the current time slot is greater than a maximum number of PDCCH candidates supported by the terminal device, or a total number of channel estimates required by the terminal device exceeds a maximum number of channel estimates supported by the terminal device, where the at least one type of information includes at least one of an orthogonal frequency division multiplexing, OFDM, symbol position of the monitoring opportunities, a priority of a scheduled cell associated with a search space set, a priority of a service, a priority of a channel, a downlink control message format DCI corresponding to the PDCCH candidates monitored by the search space set, and a Radio Network Temporary Identifier (RNTI), and the number of channel estimates is a number of non-overlapping CCEs allocated by the PDCCH candidates, the maximum number of channel estimates is an upper limit of the number of non-overlapping CCEs allocated by the PDCCH candidates.
10. The terminal device of claim 9,
the search space sets monitored by the terminal equipment in the current time slot comprise one or more search space sets, and at least one search space set in the one or more search space sets has a plurality of monitoring opportunities;
the allocation/mapping module is specifically configured to:
and allocating/mapping the PDCCH candidate number or the channel estimation number in equal proportion among the plurality of monitoring opportunities according to the OFDM symbol positions of the plurality of monitoring opportunities in the current time slot.
11. The terminal device of claim 9,
the search space sets monitored by the terminal equipment in the current time slot comprise one or more search space sets, and at least one search space set in the one or more search space sets has a plurality of monitoring opportunities;
the allocation/mapping module is specifically configured to:
preferentially allocating/mapping the number of PDCCH candidates or channel estimates needed for one or more specific monitoring opportunities among the plurality of monitoring opportunities according to the OFDM symbol positions of the plurality of monitoring opportunities within the current time slot.
12. The terminal device of claim 11,
and the OFDM symbol of the control resource set CORESET corresponding to the specific monitoring opportunity is positioned in the first N symbols of the current time slot, the value of N is configured by a radio resource control RRC signaling, or the value of N is determined by the position value of a first demodulation reference signal DMRS of a physical downlink shared channel PDSCH mapping type A in the broadcasted system information.
13. The terminal device of claim 9,
the search space sets monitored by the terminal equipment in the current time slot comprise one or more search space sets, and at least one search space set in the one or more search space sets has a plurality of monitoring opportunities;
the allocation/mapping module is specifically configured to:
allocating/mapping a total number of PDCCH candidates or channel estimates, which is not less than the minimum number of monitoring candidates, for one or more specific monitoring opportunities based on the minimum number of monitoring candidates for which the specific monitoring opportunities are guaranteed; or
Allocating/mapping, for each of one or more specific monitoring opportunities, a number of PDCCH candidates or channel estimates that is not less than the minimum number of monitoring candidates, based on the minimum number of monitoring candidates that warrant the specific monitoring opportunity.
14. The terminal device of claim 13,
the minimum listening candidate is predefined; or
The minimum listening candidate is configured by higher layer signaling.
15. The terminal device of claim 9,
the number of the search space sets monitored by the terminal equipment in the current time slot is multiple, and at least one search space set in the multiple search space sets has multiple monitoring opportunities;
the allocation/mapping module is specifically configured to:
and preferentially allocating/mapping the number of PDCCH candidates or channel estimates needed for one or more specific monitoring opportunities among the plurality of monitoring opportunities according to at least one of the type of the search space set, the type of the scheduled cell associated with the search space set, the priority of the traffic, the priority of the channel, the DCI format of the monitoring, and the RNTI.
16. The terminal device of claim 9,
the number of the search space sets monitored by the terminal equipment in the current time slot is multiple, and at least one search space set in the multiple search space sets has multiple monitoring opportunities;
the allocation/mapping module is specifically configured to:
and sequentially allocating/mapping PDCCH candidates or channel estimation numbers according to the starting symbol positions of the plurality of search space sets in the current time slot from small to large in symbol order until no allocable/mapped PDCCH candidate resources exist or the residual channel estimation numbers are not enough to allocate more PDCCH candidates.
17. A network terminal, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method according to any one of claims 1 to 8.
18. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 8.
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| CN113225751B (en) * | 2020-02-06 | 2023-05-05 | 维沃移动通信有限公司 | Monitoring method and device for search space |
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| CN111448821B (en) * | 2020-03-12 | 2024-03-01 | 北京小米移动软件有限公司 | Control channel detection method, control channel detection device, control channel information transmission device and storage medium |
| CN113498072B (en) * | 2020-03-18 | 2023-03-31 | 北京紫光展锐通信技术有限公司 | Method, device and equipment for determining monitoring number of PDCCH candidates and non-overlapping CCEs (control channel elements) |
| WO2021190648A1 (en) * | 2020-03-27 | 2021-09-30 | FG Innovation Company Limited | User equipment and method for multicast/broadcast service |
| CN115349237A (en) * | 2020-04-03 | 2022-11-15 | 高通股份有限公司 | Physical Downlink Control Channel (PDCCH) aggregation across monitoring opportunities |
| CN114982348A (en) * | 2020-04-22 | 2022-08-30 | Oppo广东移动通信有限公司 | Device and communication method thereof |
| CN113746607B (en) * | 2020-05-29 | 2023-03-03 | 维沃移动通信有限公司 | DCI (control information) transmission method and related equipment |
| CN113939036A (en) * | 2020-06-29 | 2022-01-14 | 维沃移动通信有限公司 | Channel monitoring and transmission method, terminal and network side equipment |
| CN113905440A (en) * | 2020-07-06 | 2022-01-07 | 维沃移动通信有限公司 | Channel monitoring and transmission method, device, terminal and network side equipment |
| CN116097821A (en) * | 2020-08-07 | 2023-05-09 | 中兴通讯股份有限公司 | Control channel constraints for wireless devices |
| WO2022077278A1 (en) * | 2020-10-14 | 2022-04-21 | Apple Inc. | Pdcch transmission in wireless communications |
| CN116569621A (en) * | 2020-10-22 | 2023-08-08 | 联想(北京)有限公司 | Method and apparatus for enhanced counting scheme of candidates for enhanced PDCCH transmission |
| CN114640428B (en) * | 2020-12-15 | 2024-04-12 | 上海朗帛通信技术有限公司 | Method and apparatus in a node for wireless communication |
| CN114760705A (en) * | 2021-01-08 | 2022-07-15 | 大唐移动通信设备有限公司 | Method, device and processor readable storage medium for receiving PDSCH |
| CN116636287A (en) * | 2021-01-12 | 2023-08-22 | 捷开通讯(深圳)有限公司 | Transmission enhancement method and communication equipment |
| CN115225216A (en) * | 2021-04-14 | 2022-10-21 | 维沃移动通信有限公司 | Method for allocating candidate PDCCH, terminal and network side equipment |
| CN115002786A (en) * | 2021-09-30 | 2022-09-02 | 上海朗帛通信技术有限公司 | Method and apparatus in a node used for wireless communication |
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