WO2024156271A1 - 信道估计方法、装置、终端及可读存储介质 - Google Patents

信道估计方法、装置、终端及可读存储介质 Download PDF

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Publication number
WO2024156271A1
WO2024156271A1 PCT/CN2024/073840 CN2024073840W WO2024156271A1 WO 2024156271 A1 WO2024156271 A1 WO 2024156271A1 CN 2024073840 W CN2024073840 W CN 2024073840W WO 2024156271 A1 WO2024156271 A1 WO 2024156271A1
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Prior art keywords
reg
coreset
network system
channel estimation
system bandwidth
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English (en)
French (fr)
Inventor
王理惠
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Classifications

    • 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
    • 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
    • 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
    • H04L25/024—Channel estimation channel estimation algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • 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

Definitions

  • the present application belongs to the field of communication technology, and specifically relates to a channel estimation method, device, terminal and readable storage medium.
  • the minimum network system bandwidth required by the New Radio (NR) system in the frequency band 1 (FR1) range of 410MHz to 7125MHz is 5MHz.
  • the network system bandwidth of 5MHz is the minimum bandwidth required in the frequency domain to support the synchronization signal, broadcast channel and control resource set (CORESET) with identity document (ID) 0 required by the terminal during initial access, that is, CORESET 0.
  • CORESET identity document
  • the NR system (Rel-18) will further evolve and is planned to be deployed in a network system bandwidth of less than 5MHz.
  • the configuration bandwidth of the control resource set is greater than the system bandwidth of the network deployment, the frequency domain resources of the control channel that exceed the network deployment bandwidth will not be sent by the network, and the terminal will punch holes to receive.
  • the resource element group (REG) bundle that constitutes the candidate for the physical downlink control channel (PDCCH) in the frequency domain can be used to send PDCCH and demodulation reference signal (DMRS).
  • the embodiments of the present application provide a channel estimation method, apparatus, terminal and readable storage medium, which can solve the problem of how a UE performs channel estimation on a PDCCH candidate and fully utilizes resources that do not exceed the network deployment bandwidth to transmit the PDCCH candidate.
  • a channel estimation method which is applied to a terminal, and the method includes: when the frequency domain resource configuration of a first CORESET exceeds the network system bandwidth, the terminal performs channel estimation on a PDCCH candidate transmitted on the first CORESET according to a first method; wherein the first method is related to the size of a REG set corresponding to the first CORESET or the value of a precoding granularity.
  • a channel estimation device comprising: a processing module; the processing module is used to perform channel estimation on a physical downlink control channel PDCCH candidate transmitted on the first CORESET in a first manner when the frequency domain resource configuration of the first control resource set CORESET exceeds the network system bandwidth;
  • the first method is related to the size of the resource unit group REG set corresponding to the first CORESET or the value of the precoding granularity.
  • a terminal comprising a processor and a memory, wherein the memory stores a program or instruction that can be executed on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.
  • a terminal comprising a processor and a communication interface, wherein the processor is used to perform channel estimation on physical downlink control channel PDCCH candidates transmitted on the first CORESET according to a first method when the frequency domain resource configuration of the first control resource set CORESET exceeds the network system bandwidth; wherein the first method is related to the size of the resource unit group REG set corresponding to the first CORESET or the value of the precoding granularity.
  • a readable storage medium on which a program or instruction is stored.
  • the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.
  • a chip comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect.
  • a computer program/program product is provided, wherein the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the steps of the channel estimation method as described in the first aspect.
  • the terminal when the frequency domain resource configuration of the first CORESET exceeds the network system bandwidth, the terminal performs channel estimation on the PDCCH candidates transmitted on the first CORESET in a first manner; wherein the first manner is related to the size of the REG set corresponding to the first CORESET or the value of the precoding granularity.
  • the terminal can use the first manner to perform channel estimation on the PDCCH candidates when the frequency domain resource configuration of the CORESET exceeds the network system bandwidth, that is, use resources that do not exceed the network deployment bandwidth to transmit the PDCCH candidates, thereby improving the accuracy of the channel estimation.
  • FIG1 is a schematic diagram of the composition of a control resource set provided in an embodiment of the present application.
  • FIG2 is a schematic diagram of a REG set constituting a PDCCH candidate provided in an embodiment of the present application
  • FIG3 is a possible schematic diagram of the structure of a communication system involved in an embodiment of the present application.
  • FIG4 is a flow chart of a signal estimation method according to an embodiment of the present application.
  • FIG5 is one of the embodiments of a signal estimation method provided in an embodiment of the present application.
  • FIG6 is a second embodiment of a signal estimation method provided in an embodiment of the present application.
  • FIG. 7 is a third embodiment of a signal estimation method provided in an embodiment of the present application.
  • FIG8 is a fourth embodiment of a signal estimation method provided in an embodiment of the present application.
  • FIG9 is a fifth embodiment of a signal estimation method provided in an embodiment of the present application.
  • FIG10 is a schematic diagram of a structure of a signal estimation device provided in an embodiment of the present application.
  • FIG11 is a schematic diagram of the hardware structure of a communication device provided in an embodiment of the present application.
  • FIG. 12 is a schematic diagram of the hardware structure of a terminal provided in an embodiment of the present application.
  • first, second, etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by “first” and “second” are generally of the same type, and the number of objects is not limited.
  • the first object can be one or more.
  • “and/or” in the specification and claims represents at least one of the connected objects, and the character “/" generally represents that the objects associated with each other are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • NR new radio
  • Control Resource Set As shown in Figure 1, it defines the frequency domain resources occupied by the PDCCH carrying downlink control information (DCI) in the frequency domain and the number of orthogonal frequency division multiplexing (OFDM) symbols occupied in the time domain.
  • DCI downlink control information
  • OFDM orthogonal frequency division multiplexing
  • Resource Element consists of one subcarrier in the frequency domain and one OFDM symbol in the time domain;
  • Resource Block (RB): consists of 12 REs
  • Resource Element Group (REG): consists of one RB (12 REs) in the frequency domain and one OFDM symbol in the time domain;
  • REG Bundle consists of multiple (2, 3 or 6) REGs, the number L of which is determined by the Radio Resource Control (RRC) parameter REG Bundle Size;
  • RRC Radio Resource Control
  • Control-channel element consists of 6 REGs.
  • a PDCCH For a PDCCH, it consists of one or more CCEs, and the number of allocated CCEs varies according to the aggregation levels (ALs).
  • the aggregation levels supported by PDCCH are as follows:
  • a PDCCH consists of 1 CCE
  • a PDCCH consists of 2 CCEs
  • a PDCCH consists of 4 CCEs
  • a PDCCH consists of 6 CCEs
  • a PDCCH consists of 8 CCEs
  • one PDCCH consists of 16 CCEs.
  • Search Space defines information such as the PDCCH starting OFDM symbol number and the PDCCH monitoring period.
  • the PDCCH channel in NR has multiple search spaces, including common search spaces and UE-specific search spaces, as shown in Table 1 below.
  • the ID of the CORESET associated with the Type0CSS is 0, that is, CORESET 0.
  • the Type0-PDCCH CSS is defined in Table 2 of TS 38.213, which defines the CCE aggregation level and the number of PDCCH candidates at each CCE aggregation level.
  • the UE uses DMRS RE sets in the REG bundle of the PDCCH candidate.
  • the UE uses DMRS REs in all REGs of contiguous RBs in the CORESET to attempt to decode the PDCCH candidate.
  • CORESET 0 is a special CORESET used to schedule SIB1. Other CORESET-related parameters are configured through RRC. However, CORESET 0 is scheduled before RRC is established, so its parameters are predefined by protocol 38.211. As shown below:
  • the UE may assume interleaved mapping
  • the UE may assume normal cyclic prefix when CORESET 0 is configured by MIB or SIB1;
  • the UE may assume the same precoding being used within a REG bundle.
  • the REG bundle size of CORESET 0 in the existing protocol is always 6.
  • the terminal believes that the same precoding is used in one REG bundle, and the granularity of its channel estimation is REG bundle.
  • NR is deployed on a 3MHz or 3.6MHz system bandwidth
  • 3MHz or 3.6MHz cannot support the minimum frequency domain resource bandwidth of CORESET0, which is 4.32MHz.
  • a REG bundle constituting a PDCCH candidate may be partially outside the system bandwidth and partially within the system bandwidth.
  • REG bundle 7 is in CCE 3, and one of the REG bundles is located outside the system bandwidth.
  • Half of the REGs eg, 45, 46, and 47
  • the other half of the REGs eg, 42, 43, and 44
  • FIG3 shows a block diagram of a wireless communication system applicable to the embodiment of the present application.
  • the wireless communication system includes a terminal 11 and a network side device 12.
  • the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/virtual reality, or a network device.
  • Tablet Personal Computer Tablet Personal Computer
  • laptop computer laptop computer
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • UMPC ultra-mobile personal computer
  • UMPC mobile Internet device
  • MID mobile Internet Device
  • AR augmented reality
  • virtual reality virtual reality
  • Virtual reality (VR) devices robots, wearable devices, vehicle-mounted equipment (VUE), pedestrian terminals (PUE), smart homes (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), game consoles, personal computers (PC), ATMs or self-service machines and other terminal-side devices
  • wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. It should be noted that the specific type of terminal 11 is not limited in the embodiment of the present application.
  • the network-side device 12 may include access network equipment or core network equipment, wherein the access network device 12 may also be called wireless access network equipment, wireless access network (Radio Access Network, RAN), wireless access network function or wireless access network unit.
  • the access network device 12 may include a base station, a WLAN access point or a WiFi node, etc.
  • the base station may be called a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home B node, a home evolved B node, a transmitting and receiving point (Transmitting Receiving Point, TRP) or some other suitable term in the field.
  • the base station is not limited to specific technical vocabulary. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.
  • NR As NR enters the next stage through 5G-Advanced in Rel-18, some vertical industries and operators have planned to use NR systems on some dedicated spectrum of Frequency Division Duplex (FDD) to support railway communications, smart grid control and public safety.
  • FDD Frequency Division Duplex
  • the railway industry in Europe has decided to migrate directly from GSM-R to NR, and has formulated a 10-year migration plan starting around 2025, and the deployment life may last for decades.
  • potential dedicated spectrum includes at least Europe's 26 band for public protection and disaster relief, the United States' 28 band (SouthernLinc), Europe's Global System for Mobile Communications–Railway (GSM-R), and the United States' 900MHz-Band 8/n8 for Anterix Power Company.
  • NR deployed on these dedicated spectrum has the following characteristics:
  • the device should support all functions of cross-commercial frequency bands and commercial roaming
  • the minimum network system bandwidth required by the New Radio (NR) system in the frequency band 1 (FR1) range of 410MHz to 7125MHz is 5MHz.
  • the network system bandwidth of 5MHz is the minimum bandwidth required in the frequency domain to support the synchronization signal, broadcast channel and control resource set (CORESET) with identity document (ID) 0 required by the terminal during initial access, that is, CORESET 0.
  • CORESET identity document
  • the NR system (Rel-18) will further evolve and is planned to be deployed in a network system bandwidth of less than 5MHz.
  • the configuration bandwidth of the control resource set is greater than the system bandwidth of the network deployment, the frequency domain resources of the control channel that exceed the network deployment bandwidth will not be sent by the network, and the terminal will punch holes to receive.
  • the resource element group (REG) bundle that constitutes the candidate for the physical downlink control channel (PDCCH) in the frequency domain can be used to send PDCCH and demodulation reference signal (DMRS).
  • the terminal when the frequency domain resource configuration of the first CORESET exceeds the network system bandwidth, the terminal performs channel estimation on the PDCCH candidates transmitted on the first CORESET in a first manner; wherein the first manner is related to the size of the REG set corresponding to the first CORESET or the value of the precoding granularity.
  • the terminal can use the first manner to perform channel estimation on the PDCCH candidates when the frequency domain resource configuration of the CORESET exceeds the network system bandwidth, that is, use resources that do not exceed the network deployment bandwidth to transmit the PDCCH candidates, thereby improving the accuracy of the channel estimation.
  • the channel estimation method provided in the embodiment of the present application can be executed by a channel estimation device.
  • the channel estimation method provided in the embodiment of the present application is described by taking the channel estimation device as a terminal and executing the channel estimation method as an example.
  • FIG. 4 is a schematic flow chart of a channel estimation method provided in an embodiment of the present application. As shown in FIG. 4 , the channel estimation method may include the following step 201:
  • Step 201 When the frequency domain resource configuration of the first CORESET exceeds the network system bandwidth, the terminal performs channel estimation on the PDCCH candidates transmitted on the first CORESET in a first manner.
  • the size of the REG set corresponding to the first CORESET in the first mode or The value of the precoding granularity is related.
  • the first method includes:
  • Mode 1 When the size of the REG set corresponding to the first CORESET or the precoding granularity size is a first value, the terminal uses the DMRS in the REG set of the PDCCH candidate transmitted in the first CORESET to perform channel estimation.
  • all REGs in the REG set corresponding to the first CORESET are located within the network system bandwidth.
  • Mode 2 When the REG set size corresponding to the first CORESET is set to the second value, the terminal executes the target behavior.
  • some REGs in one of the REG sets corresponding to the first CORESET are located outside the network system bandwidth.
  • the first value and the second value may be agreed upon by the protocol or may be user-defined.
  • the first method described above is exemplarily described below with two possible embodiments.
  • the value of the REG set size (i.e., the first value mentioned above) can be other values other than 6, such as 2, 3.
  • the network system bandwidth resource is N RBs
  • the value of the REG set size is the first value
  • the situation where some REGs in a REG set are located outside the network system bandwidth (or exceed the network system bandwidth) will not occur.
  • the value of the REG set size is the first value
  • all REGs in a REG set are located within the network system bandwidth.
  • the terminal believes that the same precoding is used in a REG set, and the terminal uses all DMRS in the REG set for channel estimation.
  • the value of its REG set size is equal to the number of OFDM symbols occupied by CORESET 0.
  • the value of its REG set size can be divided by the size of the network system bandwidth. If there are multiple values of the REG set size that can be divided by the size of the system bandwidth, then the value of the REG set size is the minimum value or maximum value that can be divided by the system bandwidth.
  • the terminal executes the target behavior.
  • the above target behavior includes any of the following:
  • Behavior 1 The terminal uses only the DMRS in the first REG of the PDCCH candidate for channel estimation.
  • the DMRS in the first REG use the same precoding.
  • the first REG is a REG within the network system bandwidth.
  • Behavior 2 The terminal uses the DMRS in the second REG in the first REG set of the PDCCH candidate to perform channel estimation on the PDCCH candidate transmitted on the first CORESET.
  • the DMRSs of the REGs in the first REG set use the same precoding.
  • the first REG set includes: a previous REG set of the second REG set and REGs in the second REG set that are within the network system bandwidth.
  • the second REG set includes REGs exceeding the network system bandwidth and REGs within the network system bandwidth.
  • the UE only uses the DMRS of the REGs in the REG set that are within the network system bandwidth (i.e., the first REG mentioned above) for channel estimation, that is, the DMRS in the REG set that does not exceed the system bandwidth uses the same precoding.
  • REG set 7 e.g., REG 45, REG 46, and REG 47
  • REGs e.g., REG 42, REG 43, and REG 44
  • the terminal only uses the DMRS of the REGs in the REG set that are located within the network system bandwidth (e.g., the DMRS of REG 42, REG 43, and REG 44) for channel estimation, and these DMRSs use the same precoding.
  • the network system bandwidth e.g., the DMRS of REG 42, REG 43, and REG 44
  • the terminal assumes that the precoding used by the DMRS in a REG set that does not exceed the system bandwidth is the same as the precoding used by the DMRS in the previous/previous REG set constituting the same PDCCH candidate. That is, the terminal uses part of the DMRS REs in a REG set that does not exceed the system bandwidth and the DMRS REs in the previous/previous REG set constituting the same PDCCH for channel estimation.
  • Example 3 in combination with FIG6, as shown in FIG7, taking an OFDM symbol as an example, the terminal combines some REGs (such as REG 42, REG43 and REG 44) in the network system bandwidth of REG set 7 (i.e., the second REG set mentioned above) and all REGs in the previous REG set 6 into a REG set (i.e., the first REG set mentioned above), that is, the REG set includes REG 42, REG43 and REG 44 in REG set 7, and REG36 to REG41 in REG set 6, a total of 9 REGs (i.e., the second REG mentioned above), and the terminal uses the DMRS of the REGs in the REG set for channel estimation.
  • the DRMS of these 9 REGs use the same pre-coded code.
  • the above target behavior also includes any of the following:
  • Action 3 The terminal performs puncturing reception or rate matching reception on the CCE where the third REG in the PDCCH candidate is located.
  • the third REG is a REG that exceeds the network system bandwidth.
  • Behavior 4 The terminal assumes that the precoding of the fourth REG in the second REG set is the same as the precoding of the previous REG set.
  • the fourth REG is a REG within the network system bandwidth.
  • the terminal performs puncturing reception or rate matching on the CCE where the REG in the PDCCH candidate exceeds the network system bandwidth.
  • the CCE where the REG exceeds the network system bandwidth is directly discarded.
  • the network may or may not transmit the partial REG set that does not exceed the system bandwidth.
  • REG set 7 e.g., REG 45, REG 46, and REG 47
  • the third REG the UE performs rate matching reception or puncturing reception on CCE3 where the REG set 7 is located.
  • the network may or may not transmit the PDCCH.
  • the terminal assumes that the channel estimation result of the REG (i.e., the above fourth REG) in the REG set (i.e., the above second REG set) that is partially located within the network system bandwidth is the same as the channel estimation result of the previous/previous REG set constituting the same PDCCH.
  • the terminal assumes that the precoding of the REG in the REG set that is partially located within the network system bandwidth is the same as the precoding used by the previous/previous REG set of the REG set that constitutes the same PDCCH. Then the terminal directly uses the REG in the previous/previous REG set constituting the same PDCCH for channel estimation, and uses the channel estimation result, and the terminal no longer performs independent channel estimation on some REGs located within the network system bandwidth.
  • the network-side device may or may not send some REGs located within the network system bandwidth.
  • Example 5 combined with Figure 6, as shown in Figure 9, taking an OFDM symbol as an example, the terminal assumes that the DMRS of some REGs (e.g., REG 42, REG 43, and REG 44) in REG set 7 within the network system bandwidth and the DMRS of all REGs in the previous REG set 6 use the same precoding, then the channel estimation result obtained by using the DMRS of the REGs in REG set 6 for channel estimation is the same as the channel estimation result obtained by using the DMRS of some REGs in REG set 7 within the network system bandwidth for channel estimation. Therefore, in this example, the channel estimation result of REG set 6 can be directly used.
  • some REGs e.g., REG 42, REG 43, and REG 44
  • the terminal when the frequency domain resource configuration of the first CORESET exceeds the network system bandwidth, the terminal performs channel estimation on the PDCCH candidates transmitted on the first CORESET in a first manner; wherein the first manner is related to the size of the REG set corresponding to the first CORESET or the value of the precoding granularity.
  • the terminal can use the first manner to perform channel estimation on the PDCCH candidates when the frequency domain resource configuration of the CORESET exceeds the network system bandwidth, that is, use resources that do not exceed the network deployment bandwidth to transmit the PDCCH candidates, thereby improving the accuracy of the channel estimation.
  • the channel estimation method provided in the embodiment of the present application further includes step 301:
  • Step 301 When partial resources of a CCE transmitted on a first CORESET exceed a network system bandwidth, the number of non-overlapping CCEs of the first CORESET is calculated, and a first operation is performed.
  • the first operation includes any of the following:
  • CCE is not counted in the first count.
  • the first count is the maximum number of CCEs in a time slot defined by the protocol.
  • the first count may be expressed using a first formula.
  • the first operation is determined based on any one of the following:
  • the CCE resources when part of the CCE resources exceeds the network system bandwidth, it can be determined based on the first method whether to include the CCE in the maximum number of CCEs in a time slot defined by the protocol.
  • Example 2 combined with Example 1, it can be seen that since the above CCE resources do not exceed the network system bandwidth, all CCEs are counted into the maximum number of CCEs in a time slot defined by the protocol.
  • the number of non-overlapping CCEs included in the PDCCH candidate calculated by the UE can be 3, that is, the maximum number of CCEs in a time slot is 3, which means that CCE 3 is not included in the non-overlapping
  • the number of non-overlapping CCEs included in the PDCCH candidate calculated by the UE can be 4, that is, the maximum number of CCEs in a time slot is 4, which means that CCE 3 is included in the non-overlapping
  • the number of non-overlapping CCEs included in the PDCCH candidate calculated by the UE may be 3, that is, the maximum number of CCEs in a time slot is 3, which means that CCE 3 is not counted.
  • the number of non-overlapping CCEs contained in the PDCCH candidate is 4, that is, the maximum number of CCEs in a time slot is 4, which means that CCE 3 is included in the non-overlapping
  • the channel estimation method provided in the embodiment of the present application may be executed by a channel estimation device.
  • the channel estimation device performing the channel estimation method is taken as an example to illustrate the channel estimation device provided in the embodiment of the present application.
  • the channel estimation device 700 includes: a processing module 701; the processing module 701 is used to perform channel estimation on a physical downlink control channel PDCCH candidate transmitted on the first CORESET according to a first method when the frequency domain resource configuration of the first CORESET exceeds the network system bandwidth; wherein the first method is related to the size of the resource unit group REG set corresponding to the first CORESET or the value of the precoding granularity.
  • the first method includes:
  • the REG set size or the precoding granularity size corresponding to the first CORESET is a first value
  • channel estimation is performed using the DMRS in the REG set of the PDCCH candidate transmitted in the first CORESET, and all REGs in the REG set corresponding to the first CORESET are located within the network system bandwidth; or,
  • the target behavior is executed, and some REGs in one of the REG sets in the REG sets corresponding to the first CORESET are located outside the network system bandwidth.
  • the target behavior includes any of the following:
  • the DMRS in the first REG of the PDCCH candidate uses the same precoding, and the first REG is a REG within the network system bandwidth;
  • the DMRS in the second REG in the first REG set of the PDCCH candidate is used to perform channel estimation on the PDCCH candidate transmitted on the first CORESET, the DMRS of the REG in the first REG set uses the same precoding, the first REG set includes: the previous REG set of the second REG set and the REGs in the second REG set that are within the network system bandwidth, and the second REG set includes REGs that exceed the network system bandwidth and REGs within the network system bandwidth.
  • the above target behavior also includes any of the following:
  • the precoding of the fourth REG in the second REG set is the same as the precoding of the previous REG set, and the fourth REG is a REG within the network system bandwidth.
  • the processing module 701 is further configured to calculate the first The number of non-overlapping CCEs of CORESET is calculated, and a first operation is performed; wherein the first operation includes any one of the following: counting the CCE into a first count; not counting the CCE into the first count; wherein the first count is the maximum number of CCEs in a time slot defined by the protocol.
  • the above-mentioned first operation is determined based on any one of the following: protocol agreement; determined based on the first method.
  • the device when the frequency domain resource configuration of the first CORESET exceeds the network system bandwidth, the device performs channel estimation on the PDCCH candidates transmitted on the first CORESET in accordance with the first method; wherein the first method is related to the size of the REG set corresponding to the first CORESET or the value of the precoding granularity.
  • the channel estimation device can use the first method to perform channel estimation on the PDCCH candidates when the frequency domain resource configuration of the CORESET exceeds the network system bandwidth, that is, use resources that do not exceed the network deployment bandwidth to transmit the PDCCH candidates, thereby improving the accuracy of the channel estimation.
  • the channel estimation device in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip.
  • the electronic device can be a terminal, or it can be other devices other than a terminal.
  • the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.
  • the channel estimation device provided in the embodiment of the present application can implement the various processes implemented in the method embodiments of Figures 1 to 9 and achieve the same technical effects. To avoid repetition, they will not be described here.
  • an embodiment of the present application also provides a communication device 800, including a processor 801 and a memory 802, and the memory 802 stores programs or instructions that can be executed on the processor 801.
  • the communication device 800 is a terminal
  • the program or instruction is executed by the processor 801 to implement the various steps of the above-mentioned channel estimation method embodiment and can achieve the same technical effect.
  • the embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the processor is used to perform channel estimation on the PDCCH candidates transmitted on the first CORESET in accordance with a first method when the frequency domain resource configuration of the first CORESET exceeds the network system bandwidth; wherein the first method is related to the size of the REG set corresponding to the first CORESET or the value of the precoding granularity.
  • This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to the terminal embodiment and can achieve the same technical effect.
  • Figure 12 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.
  • the terminal 100 includes but is not limited to: a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109 and at least some of the components of a processor 110.
  • the terminal 100 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 110 through a power management system, so that the power management system can manage charging, discharging, and power consumption.
  • a power source such as a battery
  • the terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.
  • the input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042, and the graphics processor 1041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode.
  • the display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc.
  • the user input unit 107 includes a touch panel 1071 and at least one of other input devices 1072.
  • the touch panel 1071 is also called a touch screen.
  • the touch panel 1071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control key, a switch key, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.
  • the RF unit 101 after receiving downlink data from the network side device, can transmit the data to the processor 110 for processing; in addition, the RF unit 101 can send uplink data to the network side device.
  • the RF unit 101 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.
  • the memory 109 can be used to store software programs or instructions and various data.
  • the memory 109 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc.
  • the memory 109 may include a volatile memory or a non-volatile memory, or the memory 109 may include both volatile and non-volatile memories.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.
  • the volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM).
  • the memory 109 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.
  • the processor 110 may include one or more processing units; optionally, the processor 110 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 110.
  • the processor 110 is configured to configure the frequency domain resources of the first CORESET to exceed the network system bandwidth.
  • channel estimation is performed on the physical downlink control channel PDCCH candidates transmitted on the first CORESET according to a first method; wherein the first method is related to the size of the resource unit group REG set corresponding to the first CORESET or the value of the precoding granularity.
  • the first method includes:
  • the REG set size or the precoding granularity size corresponding to the first CORESET is a first value
  • channel estimation is performed using a DMRS in a REG set of PDCCH candidates transmitted in the first CORESET, and all REGs in the REG set corresponding to the first CORESET are located within the network system bandwidth;
  • the target behavior is executed, and some REGs in one of the REG sets in the REG sets corresponding to the first CORESET are located outside the network system bandwidth.
  • the target behavior includes any of the following:
  • the DMRS in the first REG of the PDCCH candidate uses the same precoding, and the first REG is a REG within the network system bandwidth;
  • the DMRS in the second REG in the first REG set of the PDCCH candidate is used to perform channel estimation on the PDCCH candidate transmitted on the first CORESET, the DMRS of the REG in the first REG set uses the same precoding, the first REG set includes: the previous REG set of the second REG set and the REGs in the second REG set that are within the network system bandwidth, and the second REG set includes REGs that exceed the network system bandwidth and REGs within the network system bandwidth.
  • the above target behavior also includes any of the following:
  • the precoding of the fourth REG in the second REG set is the same as the precoding of the previous REG set, and the fourth REG is a REG within the network system bandwidth.
  • the above-mentioned processor 110 is also used to calculate the number of non-overlapping CCEs of the first CORESET and perform a first operation when partial resources of a CCE transmitted on the first CORESET exceed the network system bandwidth; wherein the first operation includes any one of the following: counting the CCE into the first count; not counting the CCE into the first count; wherein the first count is the maximum number of CCEs in a time slot defined by the protocol.
  • the above-mentioned first operation is determined based on any one of the following: protocol agreement; determined based on the first method.
  • the terminal when the frequency domain resource configuration of the first CORESET exceeds the network system bandwidth, the terminal performs channel estimation on the PDCCH candidate transmitted on the first CORESET in a first manner; wherein the first manner is related to the size of the REG set corresponding to the first CORESET or the value of the precoding granularity.
  • the electronic device can use the first manner to perform channel estimation on the PDCCH candidate when the frequency domain resource configuration of the CORESET exceeds the network system bandwidth, that is, using the frequency domain resource configuration that does not exceed the network system bandwidth.
  • the PDCCH candidates are transmitted by allocating bandwidth resources, thereby improving the accuracy of channel estimation.
  • An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored.
  • a program or instruction is stored.
  • each process of the above-mentioned channel estimation method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.
  • the processor is the processor in the terminal described in the above embodiment.
  • the readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.
  • An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned channel estimation method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.
  • An embodiment of the present application further provides a computer program/program product, which is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the various processes of the above-mentioned channel estimation method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • the technical solution of the present application can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.
  • a storage medium such as ROM/RAM, a magnetic disk, or an optical disk
  • a terminal which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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Abstract

本申请公开了一种信道估计方法、装置、终端及可读存储介质，属于通信技术领域，本申请实施例的信道估计方法包括：在第一控制资源集CORESET的频域资源配置超出网络系统带宽的情况下，终端按照第一方式对传输在第一CORESET上的物理下行控制信道PDCCH候选进行信道估计；其中，第一方式与第一CORESET对应的资源单元组REG集合的大小或预编码粒度的取值相关。

Description

信道估计方法、装置、终端及可读存储介质
相关申请的交叉引用
本申请主张在2023年01月29日在中国提交的申请号为202310064545.8的中国专利的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域，具体涉及一种信道估计方法、装置、终端及可读存储介质。
背景技术
目前，新空口(New Radio，NR)系统在频段1(FR1)即410MHz至7125MHz范围内需要的最小网络系统带宽为5MHz。该网络系统带宽即5MHz是目前支持终端在初始接入时所需要的同步信号，广播信道以及身份识别码(Identity document，ID)为0的控制资源集(Control resource set，CORESET)，即CORESET 0在频域上所需要的最小带宽。
将来NR系统(Rel-18)将进一步演进，计划在小于5MHz的网络系统带宽进行网络部署。当控制资源集的配置带宽大于网络部署的系统带宽时，超出网络部署带宽的控制信道的频域资源，网络不会发送，终端打孔接收。也就是说，构成物理下行控制信道(Physical downlink control channel，PDCCH)候选(candidate)的资源单元组(Resource Element Group，REG)集合(bundle)在频域上只有一部分可以用来发送PDCCH以及解调参考信号(Demodulation Reference Signal，DMRS)。
因此，在CORESET的频域资源配置超出网络系统带宽的情况下，用户设备(User Equipment，UE)如何对一个PDCCH候选进行信道估计，充分利用未超出网络部署带宽的资源来传输PDCCH候选，以提高控制信道信道估计的准确性成为亟待解决的问题。
发明内容
本申请实施例提供一种信道估计方法、装置、终端及可读存储介质，能够解决UE如何对一个PDCCH候选进行信道估计，充分利用未超出网络部署带宽的资源来传输PDCCH候选的问题。
第一方面，提供了一种信道估计方法，应用于终端，该方法包括：在第一CORESET的频域资源配置超出网络系统带宽的情况下，终端按照第一方式对传输在第一CORESET上的PDCCH候选进行信道估计；其中，第一方式与第一CORESET对应的REG集合的大小或预编码粒度的取值相关。
第二方面，提供了一种信道估计装置，该装置包括：处理模块；该处理模块，用于在第一控制资源集CORESET的频域资源配置超出网络系统带宽的情况下，按照第一方式对传输在第一CORESET上的物理下行控制信道PDCCH候选进行信道估计； 其中，第一方式与第一CORESET对应的资源单元组REG集合的大小或预编码粒度的取值相关。
第三方面，提供了一种终端，该终端包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤。
第四方面，提供了一种终端，包括处理器及通信接口，其中，所述处理器用于在第一控制资源集CORESET的频域资源配置超出网络系统带宽的情况下，终端按照第一方式对传输在第一CORESET上的物理下行控制信道PDCCH候选进行信道估计；其中，第一方式与第一CORESET对应的资源单元组REG集合的大小或预编码粒度的取值相关。
第五方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤。
第六方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如第一方面所述的方法。
第七方面，提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面所述的信道估计方法的步骤。
在本申请实施例中，在第一CORESET的频域资源配置超出网络系统带宽的情况下，终端按照第一方式对传输在第一CORESET上的PDCCH候选进行信道估计；其中，第一方式与第一CORESET对应的REG集合的大小或预编码粒度的取值相关。如此，可以使得终端可以在CORESET的频域资源配置超出网络系统带宽的情况下，采用第一方式对PDCCH候选进行信道估计，即，利用未超出网络部署带宽的资源来传输PDCCH候选，提高了信道估计的准确性。
附图说明
图1是本申请实施例提供的控制资源集的组成示意图；
图2是本申请实施例提供的构成PDCCH候选的REG集合示意图；
图3是本申请实施例所涉及的通信系统的一种可能的结构示意图；
图4是本申请实施例提供的一种信号估计方法的流程示意图之一；
图5是本申请实施例提供的一种信号估计方法的实施例之一；
图6是本申请实施例提供的一种信号估计方法的实施例之二；
图7是本申请实施例提供的一种信号估计方法的实施例之三；
图8是本申请实施例提供的一种信号估计方法的实施例之四；
图9是本申请实施例提供的一种信号估计方法的实施例之五；
图10是本申请实施例提供的一种信号估计装置的结构示意图之一；
图11是本申请实施例提供的一种通信设备的硬件结构示意图；
图12是本申请实施例提供的一种终端的硬件结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”所区别的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，但是这些技术也可应用于NR系统应用以外的应用，如第6代(6th Generation，6G)通信系统。
以下对本申请实施例中涉及到的相关术语进行名词解释：
1)、控制资源集(Control Resource Set，CORESET)：如图1所示，定义了携带下行控制信息(Downlink Control Information，DCI)的PDCCH在频域上占据的频域资源和在时域上占用的正交频分复用(Orthogonal frequency division multiplex，OFDM)符号数等信息。
资源单元(Resource Element，RE)：由频域上一个子载波，时域上一个OFDM符号组成；
资源块(Ressource Block，RB)：由12个RE组成；
资源单元组(Resource Element Group，REG)：频域上一个RB(12个RE)，时域上一个OFDM符号组成；
REG集合(Bundle)：由多个(2个，3个或6个)REG组成，其数量L由无线资源控制(Radio Resource Control，RRC)参数REG集合大小确定；
控制信道单元(Control-channel element，CCE)：由6个REG组成。
对于一个PDCCH而言，其由一个或多个CCEs组成，而所分配的CCE数量根据聚合等级(Aggregation levels，ALs)的不同而不同，PDCCH所支持的聚合等级如下所示:
当AL＝1，一个PDCCH由1个CCE组成；
当AL＝2，一个PDCCH由2个CCE组成；
当AL＝4，一个PDCCH由4个CCE组成；
当AL＝6，一个PDCCH由6个CCE组成；
当AL＝8，一个PDCCH由8个CCE组成；
当AL＝16，一个PDCCH由16个CCE组成。
2)、搜索空间(Search Space，SS)：定义了PDCCH起始OFDM符号编号以及PDCCH监测周期等信息。
NR中PDCCH信道有多种搜索空间，包括公共搜索空间和UE专用的搜索空间，如下表1所示。
表1
其中在Type0CSS所关联的CORESET的ID为0，即CORESET 0，Type0-PDCCH CSS由TS 38.213表2中定义了CCE聚合等级和在每个CCE聚合等级下PDCCH候选数量。
2)、信道估计
从上述协议得知，取决于高层RRC对预编码器粒度(precoder Granularity)的配 置，UE使用不同的DMRS RE集合来对precoder Granularity配置值为same As REG-bundle(即非宽带RS CORESET)和all Contiguous RBs(即宽带RS CORESET)的PDCCH候选进行信道估计。对于非宽带RS CORESET(预编码粒度＝same As REG-bundle的CORESET)，UE使用PDCCH候选的REG bundle内的DMRS RE。对于宽带RS CORESET(具有预编码器粒度＝allContiguousRBs的CORESET)，UE在CORESET中的连续RB的所有REG内使用DMRS RE，尝试解码PDCCH候选。
3)、CORESET 0
CORESET 0是一个特殊的CORESET，用于调度SIB1，其他的CORESET相关的参数都是通过RRC配置的，但是CORESET 0是在RRC建立之前就要调度，所以其参数是通过协议38.211预定义的。如下所示：
For CORESET 0configured by the ControlResourceSetZero IE:
andare defined by clause 13 of[5,TS 38.213]；

the UE may assume interleaved mapping
CCE到REG的映射总是交织映射；
L＝6；REG bundle size总是6.
R＝2；
the UE may assume normal cyclic prefix when CORESET 0 is configured by MIB or SIB1；
the UE may assume the same precoding being used within a REG bundle.
由上述可知，现有协议中CORESET 0的REG bundle size总是为6，对其PDCCH候选的信道估计，终端认为一个REG bundle内使用的是相同的预编码，其信道估计的粒度是REG bundle。
若NR部署在3MHz或3.6MHz系统带宽上，按照现有CORESET 0的配置，3MHz或3.6MHz支持不了CORESET0的最小频域资源带宽即4.32MHz。对CORESET 0的某些配置如图2所示，构成PDCCH候选的一个REG bundle可能部分位于系统带宽外，部分位于系统带宽内。例如，REG bundle 7在CCE 3中，其中一 半REG(如45、46和47)在3MHz以外，而另一半REG(如42、43和44)在3MHz内。
图3示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。其中，终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、增强现实(augmented reality，AR)/虚拟现实(virtual reality，VR)设备、机器人、可穿戴式设备(Wearable Device)、车载设备(VUE)、行人终端(PUE)、智能家居(具有无线通信功能的家居设备，如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(personal computer，PC)、柜员机或者自助机等终端侧设备，可穿戴式设备包括：智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。需要说明的是，在本申请实施例并不限定终端11的具体类型。网络侧设备12可以包括接入网设备或核心网设备，其中，接入网设备12也可以称为无线接入网设备、无线接入网(Radio Access Network,RAN)、无线接入网功能或无线接入网单元。接入网设备12可以包括基站、WLAN接入点或WiFi节点等，基站可被称为节点B、演进节点B(eNB)、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、家用B节点、家用演进型B节点、发送接收点(Transmitting Receiving Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR系统中的基站为例进行介绍，并不限定基站的具体类型。
随着NR在Rel-18中通过5G-Advanced进入下一阶段，一些垂直行业和运营商已经计划在频分复用(Frequency Division Duplex，FDD)的一些专用频谱上使用NR系统支持铁路通信、智能电网控制和公共安全。例如，欧洲的铁路行业已决定从GSM-R直接迁移到NR，并制定了从2025年左右开始的10年迁移计划，以及部署寿命可能持续几十年。其中，潜在的专用频谱至少包括欧洲的26频段用于公共保护和救灾、美国的28频段(SouthernLinc)、欧洲的铁路综合数字移动通信系统(Global System for Mobile Communications–Railway，GSM-R)和美国用于Anterix电力公司的900MHz-Band 8/n8。在这些专用频谱上部署的NR具有如下特点：
从网络的角度：
这些专用频谱部署在FDD sub1GHz上，其带宽在3-5MHz内(3MHz或3.6MHz)；
这些专用频谱没有向后兼容性问题(例如，这些专用频段不支持传统UE)。
从设备的角度：
设备应支持跨商业频段和商业漫游的全部功能；
大多数设备都通过备用电源直接连接到电网，其中尺寸和功耗不是主要问题，这和低能力的终端(Reduced Capability,RedCap)不同。
目前，新空口(New Radio，NR)系统在频段1(FR1)即410MHz至7125MHz范围内需要的最小网络系统带宽为5MHz。该网络系统带宽即5MHz是目前支持终端在初始接入时所需要的同步信号，广播信道以及身份识别码(Identity document，ID)为0的控制资源集(Control resource set，CORESET)，即CORESET 0在频域上所需要的最小带宽。
将来NR系统(Rel-18)将进一步演进，计划在小于5MHz的网络系统带宽进行网络部署。当控制资源集的配置带宽大于网络部署的系统带宽时，超出网络部署带宽的控制信道的频域资源，网络不会发送，终端打孔接收。也就是说，构成物理下行控制信道(Physical downlink control channel，PDCCH)候选(candidate)的资源单元组(Resource Element Group，REG)集合(bundle)在频域上只有一部分可以用来发送PDCCH以及解调参考信号(Demodulation Reference Signal，DMRS)。
因此，在CORESET的频域资源配置超出网络系统带宽的情况下，如何用户设备(User Equipment，UE)对一个PDCCH候选进行信道估计，充分利用未超出网络部署带宽的资源来传输PDCCH候选，以提高控制信道信道估计的准确性成为亟待解决的问题。
在本申请实施例提供的信道估计方法中，在第一CORESET的频域资源配置超出网络系统带宽的情况下，终端按照第一方式对传输在第一CORESET上的PDCCH候选进行信道估计；其中，第一方式与第一CORESET对应的REG集合的大小或预编码粒度的取值相关。如此，可以使得终端可以在CORESET的频域资源配置超出网络系统带宽的情况下，采用第一方式对PDCCH候选进行信道估计，即，利用未超出网络部署带宽的资源来传输PDCCH候选，提高了信道估计的准确性。
本申请实施例提供的信道估计方法，执行主体可以为信道估计装置。本申请实施例中以信道估计装置为终端，执行信道估计方法为例，说明本申请实施例提供的信道估计方法。
下面结合附图，通过一些实施例及其应用场景对本申请实施例提供的一种信道估计方法、装置、终端及可读存储介质进行详细地说明。
图4示出了本申请实施例提供的一种信道估计方法的流程示意图，如图4所示，该信道估计方法可以包括如下步骤201：
步骤201、在第一CORESET的频域资源配置超出网络系统带宽的情况下，终端按照第一方式对传输在该第一CORESET上的PDCCH候选进行信道估计。
在本申请实施例中，上述第一方式与第一CORESET对应的REG集合的大小或 预编码粒度的取值相关。
可选地，在本申请实施例中，上述第一方式包括：
方式1：在第一CORESET对应的REG集合的大小或预编码粒度大小取值为第一值的情况下，终端使用传输在第一CORESET中的PDCCH候选的REG集合内的DMRS进行信道估计。
示例性地，上述第一CORESET对应的REG集合中所有REG都位于网络系统带宽内。
方式2：在第一CORESET对应的REG集合大小取值为第二值的情况下，终端执行目标行为。
示例性地，上述第一CORESET对应的REG集合中其中一个REG集合中的部分REG位于网络系统带宽外。
示例性地，上述第一值和第二值均可以是协议约定的，也可以是用户自定义的。
以下以两种可能的实施例对上述第一方式进行示例性说明。
第一种可能的实施例中，针对上述方式1，在第一CORESET为CORESET 0的情况下，REG集合大小的取值(即上述第一值)可以是6以外的其他值，如2，3。
具体地，假设网络系统带宽的资源是N个RB，能够被第一值整除。则当REG集合大小的取值为第一值时，使得一个REG集合里的部分REG位于网络系统带宽外(或超出网络系统带宽)的情况不会发生。也就是说，当REG集合大小的取值为第一值时，一个REG集合里的所有REG都位于网络系统带宽内。
此时，UE对CORESET所占用的符号中用于信道估计目的的PDCCH DMRS RE位置/模式的假设没有改变，即终端认为一个REG集合内使用的是相同的预编码，终端使用该REG集合内的所有DMRS进行信道估计。
一种示例中，当CORESET 0所占用的OFDM符号大于1时，其REG集合大小的取值的大小等于CORESET 0所占用的OFDM符号数目。
另一种示例中，当CORESET 0所占用的OFDM符号等于1时，其REG集合大小的取值可以整除网络系统带宽的大小，若有多个REG集合大小的取值可以整除系统带宽的大小，则REG集合大小的取值是可以整除系统带宽的最小值或最大值。
示例一，如图5所示，以一个OFDM符号为例，假设网络系统带宽为3MHz，CORESET 0所占用的OFDM符号为3，则reg-BundleSize L＝3(即上述第一值为3)。此时，所有的REG集合都不超过3MHz，即3MHz所包含的RB数目可以被第一值整除。由于UE在频率维度上使用常规的传统DMRS模式执行信道估计，不改变UE对符号中用于信道估计目的的PDCCH DMRS RE位置/模式的假设。也就是说UE认为PDCCH候选的一个REG集合内的所有DMRS RE使用的时相同的预编码，UE使用该REG bundle内的所有DMRS RE进行信道估计。
第二种可能的实施例中，针对上述方式2，在第一CORESET对应的REG集合 大小取值为第二值的情况下，终端执行目标行为。
进一步可选地，在本申请实施例中，上述目标行为包括以下任一项：
行为1：终端仅使用PDCCH候选的第一REG中的DMRS进行信道估计。
示例性地，上述第一REG中的DMRS使用相同的预编码。
示例性地，上述第一REG为处于网络系统带宽内的REG。
行为2：终端使用PDCCH候选的第一REG集合中的第二REG中的DMRS对传输在第一CORESET上的PDCCH候选进行信道估计。
示例性地，上述第一REG集合中的REG的DMRS使用相同的预编码。
示例性地，上述第一REG集合包括：第二REG集合的前一个REG集合以及第二REG集合中处于网络系统带宽内的REG。
示例性地，上述第二REG集合包括超出网络系统带宽的REG和处于网络系统带宽内的REG。
一种示例中，针对行为1，UE只使用REG集合中处于网络系统带宽内的REG(即上述第一REG)的DMRS进行信道估计。即不超过系统带宽的REG集合里的DMRS，该部分的DMRS使用的时相同的预编码(precoding)。
示例二，如图6所示，以一个OFDM符号为例，构成AL＝4的一个PDCCH候选，使用CCE 0至CCE 3所对应的REG集合0、REG集合1、REG集合6和REG集合7中REG(即上述第一REG)的DMRS进行信道估计。此时，REG集合7中部分REG(如，REG 45、REG46和REG 47)位于网络系统带宽外，部分REG(如，REG 42、REG43和REG 44)位于网络系统带宽内。终端只使用REG集合中位于网络系统带宽内的REG的DMRS(如，REG 42、REG43和REG 44的DMRS)进行信道估计，且这些DMRS使用相同的预编码。
如此，直接使用网络系统带宽内的DMRS可以降低终端对控制信道进行信道估计时的复杂度。
一种示例中，针对行为2，终端假设未超出系统带宽的一个REG集合里的DMRS所使用的预编码和构成同一个PDCCH候选的上/前一个REG集合里的DMRS使用的预编码相同。即，终端会使用一个REG集合内的未超出系统带宽的部分DMRS RE和构成同一个PDCCH的上/前一个REG集合内的DMRS RE进行信道估计。
示例三，结合图6，如图7所示，以一个OFDM符号为例，终端将REG集合7(即上述第二REG集合)里在网络系统带宽内的部分REG(如，REG 42、REG43和REG 44)和前一个REG集合6中的所有REG组成一个REG集合(即上述第一REG集合)，即该REG集合中包括REG集合7中的REG 42、REG43和REG 44，和REG集合6中的REG36至REG41，共9个REG(即上述第二REG)，终端使用该REG集合中REG的DMRS进行信道估计。这9个REG的DRMS使用相同的预编 码。
如此，将位于网络系统带宽内的部分REG与前一个REG集合合并进行信道估计，不仅提高了控制信道的信道估计的准确性，还提高了可用资源的使用率。
进一步可选地，在本申请实施例中，上述目标行为还包括以下任一项：
行为3：终端对PDCCH候选中的第三REG所在的CCE进行打孔接收或速率匹配接收。
示例性地，上述第三REG为超出网络系统带宽的REG。
行为4：终端假设第二REG集合中的第四REG的预编码和前一个REG集合的预编码相同。
示例性地，上述第四REG为处于网络系统带宽内的REG。
示例性地，上述REG集合中的所有REG均使用相同的预编码。
一种示例中，针对上述行为3，终端对PDCCH候选中超出网络系统带宽的REG所在的CCE进行打孔接收，或速率匹配。换句话说，直接舍弃超出网络系统带宽的REG所在的CCE。网络可能传输或不传输未超出系统带宽的部分REG集合。
示例四，如图8所示，以一个OFDM符号为例，构成AL＝4的一个PDCCH候选，若REG集合7中的部分REG(如，REG 45、REG46和REG 47)(即上述第三REG)所在的频域资源超出了网络系统带宽，则UE对上述REG集合7所在的CCE3进行速率匹配的接收或打孔接收。对于位于网络系统带宽内的部分REG(例如，REG 42、REG43和REG 44)，网络可以传输或不传输PDCCH。
如此，直接舍弃超出网络系统带宽REG所在的CCE，降低了终端对控制信道进行估计的复杂度。
一种示例中，针对上述行为4，终端假设部分位于网络系统带宽内的REG集合(即上述第二REG集合)内的REG(即上述第四REG)信道估计结果和构成同一个PDCCH的上/前一个REG集合的信道估计结果相同。换句话说，终端假设部分位于网络系统带宽内的REG集合内的REG的预编码与该REG集合的构成同一个PDCCH的上/前一个REG集合所使用的预编码相同。则终端直接使用构成同一个PDCCH的上/前一个REG集合内的REG进行信道估计，并使用该信道估计结果，终端不再对位于网络系统带宽内的部分REG进行独立的信道估计。
需要说明的是，网络侧设备对于位于网络系统带宽内的部分REG可能发生也可能不发送。
示例五，结合图6，如图9所示,以一个OFDM符号为例，终端假设REG集合7里在网络系统带宽内的部分REG(例如，REG 42、REG43和REG 44)的DMRS和前一个REG集合6中的所有REG的DMRS使用相同的预编码，则使用REG集合6中的REG的DMRS进行信道估计所得到的信道估计结果，与使用REG集合7里在网络系统带宽内的部分REG的DMRS进行信道估计得到的信道估计结果相同。因 此，在该示例中，可以直接使用REG集合6的信道估计结果。
如此，直接使用构成同一PDCCH候选的前一个REG集合的信道估计结果，不仅提高了可用资源的使用率，还降低了终端对控制信道进行估计的复杂度。
在本申请实施例提供的信道估计方法中，在第一CORESET的频域资源配置超出网络系统带宽的情况下，终端按照第一方式对传输在第一CORESET上的PDCCH候选进行信道估计；其中，第一方式与第一CORESET对应的REG集合的大小或预编码粒度的取值相关。如此，可以使得终端可以在CORESET的频域资源配置超出网络系统带宽的情况下，采用第一方式对PDCCH候选进行信道估计，即，利用未超出网络部署带宽的资源来传输PDCCH候选，提高了信道估计的准确性。
可选地，在本申请实施例中，在上述步骤201“终端按照第一方式对传输在第一CORESET上的PDCCH候选进行信道估计”之后，本申请实施例提供的信道估计方法还包括步骤301：
步骤301、在传输在第一CORESET上的一个CCE的部分资源超出网络系统带宽的情况下，计算第一CORESET的非重叠CCE的数目，并执行第一操作。
示例性地，上述第一操作包括以下任一项：
将CCE计入第一计数；
将CCE不计入第一计数。
示例性地，上述第一计数是协议定义的一个时隙中最大CCE数目。
示例性地，上述第一计数可以采用第一公式表示。
第一公式：
可选地，在本申请实施例中，上述第一操作是基于以下任一项确定的：
协议约定；
基于上述第一方式确定的。
示例性地，在上述CCE的部分资源超出网络系统带宽的情况下，可以基于第一方式判断是否将该CCE计入协议定义的一个时隙中最大CCE数目中。
一种示例中，结合示例一可知，由于上述CCE的资源未超出网络系统带宽，则所有CCE全部计入协议定义的一个时隙中最大CCE数目中。
一种示例中，结合示例二可知，UE计算该PDCCH候选所包含的非重叠的CCE数目可以是3，也就是一个时隙中最大CCE数目为3，则表示CCE 3不计入非重叠的
一种示例中，结合示例三可知，UE计算该PDCCH候选所包含的非重叠的CCE数目可以是4，也就是一个时隙中最大CCE数目为4，则表示CCE 3计入非重叠的
一种示例中，结合示例四和示例五可知，UE计算该PDCCH候选所包含的非重叠的CCE数目可以是3，也就是一个时隙中最大CCE数目为3，则表示CCE 3不计 入非重叠的或者该PDCCH候选所包含的非重叠的CCE数目是4，也就是一个时隙中最大CCE数目为4，则表示CCE 3计入非重叠的
如此，可以通过计算判断是否需要将部分资源超出网络系统带宽的CCE计入一个时隙中最大CCE数目，降低计算复杂度。
本申请实施例提供的信道估计方法，执行主体可以为信道估计装置。本申请实施例中以信道估计装置执行信道估计方法为例，说明本申请实施例提供的信道估计装置。
本申请实施例提供一种信道估计装置700，如图10所示，该信道估计装置700包括：处理模块701；该处理模块701，用于在第一CORESET的频域资源配置超出网络系统带宽的情况下，按照第一方式对传输在第一CORESET上的物理下行控制信道PDCCH候选进行信道估计；其中，第一方式与第一CORESET对应的资源单元组REG集合的大小或预编码粒度的取值相关。
可选地，在本申请实施例中，上述第一方式包括：
在第一CORESET对应的REG集合大小的或预编码粒度大小取值为第一值的情况下，使用传输在第一CORESET中的PDCCH候选的REG集合内的DMRS进行信道估计，上述第一CORESET对应的REG集合中所有REG都位于网络系统带宽内；或，
在第一CORESET对应的REG集合大小取值为第二值的情况下，执行目标行为，上述第一CORESET对应的REG集合中其中一个REG集合中的部分REG位于网络系统带宽外。
可选地，在本申请实施例中，上述目标行为包括以下任一项：
仅使用PDCCH候选的第一REG中的DMRS进行信道估计，第一REG中的DMRS使用相同的预编码，第一REG为处于网络系统带宽内的REG；
使用PDCCH候选的第一REG集合中的第二REG中的DMRS对传输在第一CORESET上的PDCCH候选进行信道估计，第一REG集合中的REG的DMRS使用相同的预编码，第一REG集合包括：第二REG集合的前一个REG集合以及第二REG集合中处于网络系统带宽内的REG，第二REG集合包括超出网络系统带宽的REG和处于网络系统带宽内的REG。
可选地，在本申请实施例中，上述目标行为还包括以下任一项：
对PDCCH候选中的第三REG所在的控制信道单元CCE进行打孔接收或速率匹配接收，第三REG为超出网络系统带宽的REG；
假设第二REG集合中的第四REG的预编码和前一个REG集合的预编码相同，第四REG为处于网络系统带宽内的REG。
可选地，在本申请实施例中，上述处理模块701，还用于在传输在第一CORESET上的一个CCE的部分资源超出网络系统带宽的情况下，计算第一 CORESET的非重叠CCE的数目，并执行第一操作；其中，第一操作包括以下任一项：将该CCE计入第一计数；将该CCE不计入第一计数；其中，第一计数是协议定义的一个时隙中最大CCE数目。
可选地，在本申请实施例中，上述第一操作是基于以下任一项确定的：协议约定；基于第一方式确定的。
在本申请实施例提供的信道估计装置中，该装置在第一CORESET的频域资源配置超出网络系统带宽的情况下，按照第一方式对传输在第一CORESET上的PDCCH候选进行信道估计；其中，第一方式与第一CORESET对应的REG集合的大小或预编码粒度的取值相关。如此，可以使得信道估计装置可以在CORESET的频域资源配置超出网络系统带宽的情况下，采用第一方式对PDCCH候选进行信道估计，即，利用未超出网络部署带宽的资源来传输PDCCH候选，提高了信道估计的准确性。
本申请实施例中的信道估计装置可以是电子设备，例如具有操作系统的电子设备，也可以是电子设备中的部件，例如集成电路或芯片。该电子设备可以是终端，也可以为除终端之外的其他设备。示例性的，终端可以包括但不限于上述所列举的终端11的类型，其他设备可以为服务器、网络附属存储器(Network Attached Storage，NAS)等，本申请实施例不作具体限定。
本申请实施例提供的信道估计装置能够实现图1至图9的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
可选的，如图11所示，本申请实施例还提供一种通信设备800，包括处理器801和存储器802，存储器802上存储有可在所述处理器801上运行的程序或指令，例如，该通信设备800为终端时，该程序或指令被处理器801执行时实现上述信道估计方法实施例的各个步骤，且能达到相同的技术效果。
本申请实施例还提供一种终端，包括处理器和通信接口，处理器用于在第一CORESET的频域资源配置超出网络系统带宽的情况下，按照第一方式对传输在第一CORESET上的PDCCH候选进行信道估计；其中，第一方式与第一CORESET对应的REG集合的大小或预编码粒度的取值相关。该终端实施例与上述终端侧方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该终端实施例中，且能达到相同的技术效果。具体地，图12为实现本申请实施例的一种终端的硬件结构示意图。
该终端100包括但不限于：射频单元101、网络模块102、音频输出单元103、输入单元104、传感器105、显示单元106、用户输入单元107、接口单元108、存储器109以及处理器110等中的至少部分部件。
本领域技术人员可以理解，终端100还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器110逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图12中示出的终端结构并不构成对终端 的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元104可以包括图形处理单元(Graphics Processing Unit，GPU)1041和麦克风1042，图形处理器1041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元106可包括显示面板1061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板1061。用户输入单元107包括触控面板1071以及其他输入设备1072中的至少一种。触控面板1071，也称为触摸屏。触控面板1071可包括触摸检测装置和触摸控制器两个部分。其他输入设备1072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元101接收来自网络侧设备的下行数据后，可以传输给处理器110进行处理；另外，射频单元101可以向网络侧设备发送上行数据。通常，射频单元101包括但不限于天线、放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器109可用于存储软件程序或指令以及各种数据。存储器109可主要包括存储程序或指令的第一存储区和存储数据的第二存储区，其中，第一存储区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器109可以包括易失性存储器或非易失性存储器，或者，存储器109可以包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synch link DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本申请实施例中的存储器109包括但不限于这些和任意其它适合类型的存储器。
处理器110可包括一个或多个处理单元；可选的，处理器110集成应用处理器和调制解调处理器，其中，应用处理器主要处理涉及操作系统、用户界面和应用程序等的操作，调制解调处理器主要处理无线通信信号，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器110中。
其中，处理器110，用于在第一CORESET的频域资源配置超出网络系统带宽的 情况下，按照第一方式对传输在第一CORESET上的物理下行控制信道PDCCH候选进行信道估计；其中，第一方式与第一CORESET对应的资源单元组REG集合的大小或预编码粒度的取值相关。
可选地，在本申请实施例中，上述第一方式包括：
在第一CORESET对应的REG集合大小的或预编码粒度大小取值为第一值的情况下，使用传输在第一CORESET中的PDCCH候选的REG集合内的DMRS进行信道估计，上述第一CORESET对应的REG集合中所有REG都位于网络系统带宽内；
在第一CORESET对应的REG集合大小取值为第二值的情况下，执行目标行为，上述第一CORESET对应的REG集合中其中一个REG集合中的部分REG位于网络系统带宽外。
可选地，在本申请实施例中，上述目标行为包括以下任一项：
仅使用PDCCH候选的第一REG中的DMRS进行信道估计，第一REG中的DMRS使用相同的预编码，第一REG为处于网络系统带宽内的REG；
使用PDCCH候选的第一REG集合中的第二REG中的DMRS对传输在第一CORESET上的PDCCH候选进行信道估计，第一REG集合中的REG的DMRS使用相同的预编码，第一REG集合包括：第二REG集合的前一个REG集合以及第二REG集合中处于网络系统带宽内的REG，第二REG集合包括超出网络系统带宽的REG和处于网络系统带宽内的REG。
可选地，在本申请实施例中，上述目标行为还包括以下任一项：
对PDCCH候选中的第三REG所在的控制信道单元CCE进行打孔接收或速率匹配接收，第三REG为超出网络系统带宽的REG；
假设第二REG集合中的第四REG的预编码和前一个REG集合的预编码相同，第四REG为处于网络系统带宽内的REG。
可选地，在本申请实施例中，上述处理器110，还用于在传输在第一CORESET上的一个CCE的部分资源超出网络系统带宽的情况下，计算第一CORESET的非重叠CCE的数目，并执行第一操作；其中，第一操作包括以下任一项：将该CCE计入第一计数；将该CCE不计入第一计数；其中，第一计数是协议定义的一个时隙中最大CCE数目。
可选地，在本申请实施例中，上述第一操作是基于以下任一项确定的：协议约定；基于第一方式确定的。
在本申请实施例提供的终端中，在第一CORESET的频域资源配置超出网络系统带宽的情况下，终端按照第一方式对传输在第一CORESET上的PDCCH候选进行信道估计；其中，第一方式与第一CORESET对应的REG集合的大小或预编码粒度的取值相关。如此，可以使得电子设备可以在CORESET的频域资源配置超出网络系统带宽的情况下，采用第一方式对PDCCH候选进行信道估计，即，利用未超出网络部 署带宽的资源来传输PDCCH候选，提高了信道估计的准确性。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述信道估计方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述信道估计方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
本申请实施例另提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现上述信道估计方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以计算机软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形 式，均属于本申请的保护之内。

Claims (16)

  1. 一种信道估计方法，包括：
    在第一控制资源集CORESET的频域资源配置超出网络系统带宽的情况下，终端按照第一方式对传输在所述第一CORESET上的物理下行控制信道PDCCH候选进行信道估计；
    其中，所述第一方式与所述第一CORESET对应的资源单元组REG集合的大小或预编码粒度的取值相关。
  2. 根据权利要求1所述的方法，其中，所述第一方式包括：
    在所述第一CORESET对应的REG集合的大小或预编码粒度大小取值为第一值的情况下，所述终端使用所述传输在第一CORESET中的PDCCH候选的REG集合内的解调参考信号DMRS进行信道估计，所述第一CORESET对应的REG集合中所有REG都位于所述网络系统带宽内；或，
    在所述第一CORESET对应的REG集合大小取值为第二值的情况下，所述终端执行目标行为，所述第一CORESET对应的REG集合中其中一个REG集合中的部分REG位于所述网络系统带宽外。
  3. 根据权利要求1所述的方法，其中，所述目标行为包括以下任一项：
    所述终端仅使用所述PDCCH候选的第一REG中的DMRS进行信道估计，所述第一REG中的DMRS使用相同的预编码，所述第一REG为处于所述网络系统带宽内的REG；
    所述终端使用所述PDCCH候选的第一REG集合中的第二REG中的DMRS对传输在所述第一CORESET上的PDCCH候选进行信道估计，所述第一REG集合中的REG的DMRS使用相同的预编码，所述第一REG集合包括：第二REG集合的前一个REG集合以及所述第二REG集合中处于所述网络系统带宽内的REG，所述第二REG集合包括超出所述网络系统带宽的REG和处于所述网络系统带宽内的REG。
  4. 根据权利要求3所述的方法，其中，所述目标行为还包括以下任一项：
    所述终端对所述PDCCH候选中的第三REG所在的控制信道单元CCE进行打孔接收或速率匹配接收，所述第三REG为超出所述网络系统带宽的REG；
    所述终端假设所述第二REG集合中的第四REG的预编码和前一个REG集合的预编码相同，所述第四REG为处于所述网络系统带宽内的REG。
  5. 根据权利要求1所述的方法，其中，所述终端按照第一方式对传输在所述第一CORESET上的PDCCH候选进行信道估计之后，所述方法还包括：
    在传输在所述第一CORESET上的一个CCE的部分资源超出所述网络系统带宽的情况下，计算所述第一CORESET的非重叠CCE的数目，并执行第一操作；
    其中，所述第一操作包括以下任一项：
    将所述CCE计入第一计数；
    将所述CCE不计入所述第一计数；
    其中，所述第一计数是协议定义的一个时隙中最大CCE数目。
  6. 根据权利要求5所述的方法，其中，所述第一操作是基于以下任一项确定的：
    协议约定；
    基于所述第一方式确定的。
  7. 一种信道估计装置，所述装置包括：处理模块；
    所述处理模块，用于在第一控制资源集CORESET的频域资源配置超出网络系统带宽的情况下，按照第一方式对传输在所述第一CORESET上的物理下行控制信道PDCCH候选进行信道估计；
    其中，所述第一方式与所述第一CORESET对应的资源单元组REG集合的大小或预编码粒度的取值相关。
  8. 根据权利要求7所述的装置，其中，所述第一方式包括：
    在所述第一CORESET对应的REG集合的大小或预编码粒度大小取值为第一值的情况下，使用所述传输在第一CORESET中的PDCCH候选的REG集合内的解调参考信号DMRS进行信道估计，所述第一CORESET对应的REG集合中所有REG都位于所述网络系统带宽内；或，
    在所述第一CORESET对应的REG集合大小取值为第二值的情况下，执行目标行为，所述第一CORESET对应的REG集合中其中一个REG集合中的部分REG位于所述网络系统带宽外。
  9. 根据权利要求7所述的装置，其中，所述目标行为包括以下任一项：
    仅使用所述PDCCH候选的第一REG中的DMRS进行信道估计，所述第一REG中的DMRS使用相同的预编码，所述第一REG为处于所述网络系统带宽内的REG；
    使用所述PDCCH候选的第一REG集合中的第二REG中的DMRS对传输在所述第一CORESET上的PDCCH候选进行信道估计，所述第一REG集合中的REG的DMRS使用相同的预编码，所述第一REG集合包括：第二REG集合的前一个REG集合以及所述第二REG集合中处于所述网络系统带宽内的REG，所述第二REG集合包括超出所述网络系统带宽的REG和处于所述网络系统带宽内的REG。
  10. 根据权利要求9所述的装置，其中，所述目标行为还包括以下任一项：
    对所述PDCCH候选中的第三REG所在的控制信道单元CCE进行打孔接收或速率匹配接收，所述第三REG为超出所述网络系统带宽的REG；
    假设所述第二REG集合中的第四REG的预编码和前一个REG集合的预编码相同，所述第四REG为处于所述网络系统带宽内的REG。
  11. 根据权利要求7所述的装置，其中，
    所述处理模块，还用于在传输在所述第一CORESET上的一个CCE的部分资源 超出所述网络系统带宽的情况下，计算所述第一CORESET的非重叠CCE的数目，并执行第一操作；
    其中，所述第一操作包括以下任一项：
    将所述CCE计入第一计数；
    将所述CCE不计入所述第一计数；
    其中，所述第一计数是协议定义的一个时隙中最大CCE数目。
  12. 根据权利要求11所述的装置，其中，所述第一操作是基于以下任一项确定的：
    协议约定；
    基于所述第一方式确定的。
  13. 一种终端，包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求1至6任一项所述的信道估计方法的步骤。
  14. 一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1至6任一项所述的信道估计方法的步骤。
  15. 一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如权利要求1至6任一项所述的信道估计方法的步骤。
  16. 一种计算机程序产品，所述程序产品被至少一个处理器执行以实现如权利要求1至6任一项所述的信道估计方法的步骤。
PCT/CN2024/073840 2023-01-29 2024-01-24 信道估计方法、装置、终端及可读存储介质 Ceased WO2024156271A1 (zh)

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