Channel transmission method and apparatus, terminal, network side device, and medium
Patent Information
- Application Number
- PCT/CN2026/084836
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-03-27
- Filing Date
- 2026-03-20
- Publication Date
- 2026-10-01
Smart Images
Figure CN2026084836_01102026_PF_FP_ABST
Abstract
Description
Channel transmission methods, devices, terminals, network-side equipment and media
[0001] Cross-references to related applications
[0002] This application claims priority to Chinese Patent Application No. 202510376138.X, filed on March 27, 2025, the entire contents of which are incorporated herein by reference. Technical Field
[0003] This application belongs to the field of communication technology, specifically relating to a channel transmission method, apparatus, terminal, network-side equipment, and medium. Background Technology
[0004] Currently, the Physical downlink control channel (PDCCH) uses polar coding, and the resources of the PDCCH candidate are defined by the aggregation level (AL).
[0005] The PDCCH repetition in related technologies only supports complete repetition of the PDCCH, requiring that the AL (Allocation Level) of the two PDCCH candidates be identical, the coded bits carried on the PDCCH be identical, and the Downlink Control Information (DCI) payloads corresponding to the two PDCCH candidates be identical. Both PDCCH candidates must have the same AL resources, and a maximum of two PDCCH repetitions can be performed. The configurable AL values are {1, 2, 4, 8, 16}; other AL values cannot be flexibly configured, and PDCCH repetition also requires that the ALs of the receiving PDCCH candidates be identical.
[0006] Therefore, the resources of the PDCCH cannot be used flexibly. For terminals with limited bandwidth, the system resources cannot be fully utilized even when resources are insufficient. Summary of the Invention
[0007] This application provides a channel transmission method, apparatus, terminal, network-side device, and medium that can flexibly utilize PDCCH resources. For terminals with limited bandwidth, it can make full use of system resources when resources are insufficient.
[0008] In a first aspect, a channel transmission method is provided, executed by a terminal, the method comprising: the terminal determining whether to listen to or receive a PDCCH based on first information; wherein the listening to or receiving of a PDCCH includes M PDCCH candidates or L PDCCH listening opportunities, the M PDCCH candidates having the same or different aggregation levels, or the M PDCCH candidates among the L PDCCH listening opportunities having the same or different aggregation levels, and M and L being integers greater than or equal to 2; the first information includes at least one of the following: the PDCCH merging method; the reference aggregation level; the configuration information of the reference search space set; the configuration information of the search space; the configuration information of the control resource set; the configuration information of the listening opportunity; and the type of the wireless network temporary identifier.
[0009] Secondly, a channel transmission method is provided, executed by a network-side device, the method comprising: the network-side device sending a PDCCH to a terminal; wherein, the listening or receiving of the PDCCH includes M PDCCH candidates or L PDCCH listening opportunities, the M PDCCH candidates having the same or different aggregation levels, or the M PDCCH candidates in the L PDCCH listening opportunities having the same or different aggregation levels, and M and L are both integers greater than or equal to 2.
[0010] Thirdly, a channel transmission apparatus is provided, comprising: a first processing module; the first processing module being configured to determine, based on first information, whether to monitor or receive a PDCCH; wherein the monitoring or reception of a PDCCH includes M PDCCH candidates or L PDCCH monitoring opportunities, the M PDCCH candidates having the same or different aggregation levels, or the M PDCCH candidates among the L PDCCH monitoring opportunities having the same or different aggregation levels, and M and L being integers greater than or equal to 2; the first information includes at least one of the following: a PDCCH merging method; a reference aggregation level; configuration information of a reference search space set; configuration information of a search space; configuration information of a control resource set; configuration information of a monitoring opportunity; and a type of wireless network temporary identifier.
[0011] Fourthly, a channel transmission apparatus is provided, comprising: a second transmitting module; the second transmitting module is configured to transmit PDCCH to a terminal; wherein the monitoring or reception of PDCCH includes M PDCCH candidates or L PDCCH monitoring opportunities, the M PDCCH candidates having the same or different aggregation levels, or the M PDCCH candidates in the L PDCCH monitoring opportunities having the same or different aggregation levels, and M and L are both integers greater than or equal to 2.
[0012] Fifthly, a channel transmission apparatus is provided, the apparatus being configured to perform the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.
[0013] In a sixth aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.
[0014] In a seventh aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is configured to determine whether to listen to or receive a PDCCH based on first information; wherein listening to or receiving a PDCCH includes M PDCCH candidates or L PDCCH listening opportunities, the M PDCCH candidates having the same or different aggregation levels, or the M PDCCH candidates among the L PDCCH listening opportunities having the same or different aggregation levels, and M and L are both integers greater than or equal to 2; the first information includes at least one of the following: the PDCCH merging method; the reference aggregation level; the configuration information of the reference search space set; the configuration information of the search space; the configuration information of the control resource set; the configuration information of the listening opportunity; and the type of the wireless network temporary identifier.
[0015] Eighthly, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the second aspect.
[0016] In a ninth aspect, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used to send PDCCH to a terminal; wherein the listening or receiving of PDCCH includes M PDCCH candidates or L PDCCH listening opportunities, the M PDCCH candidates having the same or different aggregation levels, or the M PDCCH candidates in the L PDCCH listening opportunities having the same or different aggregation levels, where M and L are both integers greater than or equal to 2.
[0017] In a tenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect.
[0018] Eleventhly, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the method as described in the first aspect, and the network-side device can be used to perform the steps of the method as described in the second aspect.
[0019] In a twelfth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.
[0020] In a thirteenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the method as described in the first aspect, or to implement the steps of the method as described in the second aspect.
[0021] In this embodiment, the terminal can determine whether to listen to or receive a PDCCH based on the first information; wherein, listening to or receiving a PDCCH includes M PDCCH candidates or L PDCCH listening opportunities, the M PDCCH candidates having the same or different aggregation levels, or the M PDCCH candidates among the L PDCCH listening opportunities having the same or different aggregation levels, and M and L are both integers greater than or equal to 2; the first information includes at least one of the following: the PDCCH merging method; the reference aggregation level; the configuration information of the reference search space set; the configuration information of the search space; the configuration information of the control resource set; the configuration information of the listening opportunity; and the type of the wireless network temporary identifier. With this scheme, since the terminal can determine whether to listen to or receive the PDCCH based on the first information, and the listening to or receiving of the PDCCH includes M PDCCH candidates or L PDCCH listening opportunities, the aggregation levels of the M PDCCH candidates may be the same or different, or the aggregation levels of the M PDCCH candidates in the L PDCCH listening opportunities may be the same or different, when merging PDCCH candidates, it is not necessary to require that the aggregation levels of the M PDCCH candidates be exactly the same. Thus, for terminals with limited bandwidth resources, PDCCH resources can be used flexibly, and for terminals with limited bandwidth resources, system resources can be fully utilized when resources are insufficient. Attached Figure Description
[0022] Figure 1 is a block diagram of a wireless communication system to which some embodiments of this application may be applied;
[0023] Figure 2 is a flowchart of a channel transmission method provided in some embodiments of this application;
[0024] Figure 3 is a schematic diagram of a channel transmission method provided in some embodiments of this application;
[0025] Figure 4 is a schematic diagram of a channel transmission method provided in some embodiments of this application;
[0026] Figure 5 is a schematic diagram of a channel transmission method provided in some embodiments of this application;
[0027] Figure 6 is a schematic diagram of a channel transmission method provided in some embodiments of this application;
[0028] Figure 7 is a schematic diagram of a channel transmission method provided in some embodiments of this application;
[0029] Figure 8 is a schematic diagram of a channel transmission method provided in some embodiments of this application;
[0030] Figure 9 is a schematic diagram of a channel transmission method provided in some embodiments of this application;
[0031] Figure 10 is a flowchart of a channel transmission method provided in some embodiments of this application;
[0032] Figure 11 is a schematic diagram of the structure of a channel transmission device provided in some embodiments of this application;
[0033] Figure 12 is a schematic diagram of the structure of a channel transmission device provided in some embodiments of this application;
[0034] Figure 13 is a schematic diagram of a communication device provided in some embodiments of this application;
[0035] Figure 14 is a schematic diagram of the hardware structure of a terminal provided in some embodiments of this application;
[0036] Figure 15 is a schematic diagram of the hardware structure of a network-side device provided in some embodiments of this application. Detailed Implementation
[0037] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.
[0038] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0039] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as the sender explicitly informing the receiver of specific information, the required operation, or the requested result in the instruction sent. An indirect instruction can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the required operation or requested result based on the judgment result.
[0040] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.
[0041] Figure 1 shows a block diagram of a wireless communication system applicable to an embodiment of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as User Equipment (UE), and can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (APs), or Wireless Fidelity (WiFi) nodes, etc.Among them, base stations can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform stations). The term "base station" can be any suitable term in the field, such as "station" or any other appropriate term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to specific technical terms. It should be noted that the embodiments of this application only use the base station in the NR system as an example for introduction, and do not limit the specific type of base station.
[0042] Core network equipment, also known as core network nodes, core network functions, or core network elements, includes, but is not limited to, at least one of the following: Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), and Binding Support. Functions include BSF, Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), Network Data Analytics Function (NWDAF), and Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform station).It should be noted that the embodiments of this application only use the core network equipment in the NR system as an example for introduction, and do not limit the specific type of core network equipment. If the name of the core network equipment mentioned in the embodiments of this application changes in subsequent protocol versions (e.g., 6G), it is also within the scope of protection of this application.
[0043] Optionally, the core network equipment can be implemented by one or more functional modules in a single device, or by multiple devices working together; this application does not specifically limit this. It is understood that the aforementioned functional modules can be network elements in hardware devices, software functional modules running on dedicated hardware, or virtualized functional modules instantiated on a platform (e.g., a cloud platform).
[0044] The following explains some concepts and terms involved in the channel transmission method, apparatus, terminal, network-side equipment and medium provided in the embodiments of this application.
[0045] Configuration of Control Resource Set (CORESET)
[0046] In NR, CORESET is similar to the definition of an LTE PDCCH control domain. It can be all or part of a Physical Resource Block (PRB) configured in the Bandwidth Part (BWP) frequency domain. The duration of a CORESET (in symbols) can be configured to 1, 2, or 3 symbols. In this application, the configuration of CORESET is not limited to 1, 2, or 3 symbols and can be applied to CORESETs with larger symbols. The resources associated with CORESET are defined as follows:
[0047] Resource Element Group (REG): A resource element group that occupies 1 symbol in the time domain and 1 PRB in the frequency domain;
[0048] REG bundle: A combination of L REGs, where L is configured by the RRC parameter reg-bundle-size. For non-interleaved CCE-to-REG mapping, L is fixed at 6. For interleaved CCE-to-REG mapping, when the number of CORESET symbols is configured to 1, L can be configured to 2 or 6. When the number of CORESET symbols is configured to 2 or 3, L can be configured to the number of CORESET symbols or 6.
[0049] Control-channel element (CCE): Contains 6 REGs, and is mapped according to the following CCE-to-REG mapping rules.
[0050] CCE-to-REG mapping can be configured to be interleaved or non-interleaved, and is performed at the REG bundle granularity according to the following rules:
[0051] First, REGs are numbered according to the principle of first proceeding from the time domain to the end, and then from the frequency domain to the highest frequency domain.
[0052] The i-th REG bundle contains REG{i*L,i*L+1,…,i*L+L-1}, i=0,1,…,N Coreset , where N Coreset The number of REGs configured for Coreset;
[0053] For CCE j, it contains REG bundle {f(6j / L), f(6j / L+1), ..., f(6j / L+6 / L-1)}; for non-interleaved CCE-to-REG mapping, L = 6 and f(x) = x; for interleaved CCE-to-REG mapping, L ∈ {2, 6} for and for And the interleaving function is x=cR+rr=0,1,…,R-1 c=0,1,…,C-1
[0054] Where R is the interleaver size, which can be configured to 2, 3, or 6, and N... Coreset / (L*R) is an integer; n shift ∈{0,1,…,274} can be configured through the higher-level parameter shiftIndex; otherwise...
[0055] When the higher-level parameter precoderGranularity is configured as sameAsREG-bundle, the UE assumes that the precoding within a REG bundle is the same;
[0056] When the higher-layer parameter precoderGranularity is configured as allContiguousRBs, the UE assumes that the precoding on consecutive REGs within the coreset is the same, and that the consecutive REGs do not overlap with the REs of the LTE CRS configured in any SSB or DSS case.
[0057] For Coreset 0, the UE is assumed to be interleaved, with L=6 and R=2.
[0058] The network (NW) configures the CORESET parameters for the terminal through radio resource control (RRC). The specific configuration information is as follows:
[0059] Where Duration is the time domain length of CORESET, and the configurable values are {1, 2, 3}; frequencyDomainResources is a bitmap indicating the frequency domain resources of CORESET, with each bit indicating whether the 6 PRBs of resources are resources of CORESET.
[0060] Search space (SS)
[0061] The search space for NR is determined by the CCE index within CORESET as follows:
[0062] The CCE index of each candidate PDCCH in the NR within the CORESET is determined according to a given search space function. Specifically, for the search space set s of the associated control resource set p, in the time slot... Aggregate candidate control channels of level L The CCE index is given by the following formula (1): D = 65537, A p =39827; N CCE,p n is the number of CCEs in CORESET p; CI The value of the carrier indication field. in, The number of PDCCH candidates with aggregation level (AL) = L that the configured UE listens for in the search spaces.
[0063] In NR, the search space configuration is as follows:
[0064] The duration in the search space configuration refers to the number of consecutive slots of a single SS in each transmission opportunity.
[0065] PDCCH repetition technology
[0066] PDCCH repetition satisfies the following properties:
[0067] Two linked PDCCH candidates are associated with their respective search space sets, and two search space sets are associated with their respective CORESETs. The nth PDCCH candidate in the first SS set is linked with the nth PDCCH candidate in the second search space set, which is called PDCCH repetition and merging.
[0068] The two search space sets are configured with the same period, offset, duration, number of monitoring occasions (MO), and AL; for each AL, there are the same number of PDCCH candidates.
[0069] In the network's search space configuration, a SearchSpaceLinkingId is set. If two search spaces have the same SearchSpaceLinkingId, the UE assumes that the two search spaces are linked for PDCCH repetition.
[0070] Polar coding
[0071] Polar encoding is used for PDCCH, and the resources of PDCCH candidates are defined by AL (that is, the number of corresponding CCEs). The sequence mapped on PDCCH is the DCI input polar encoder, which generates an N-bit circular buffer, and then the sequence is obtained by rate matching according to the output bit length.
[0072] N is the length of the circular buffer, and the value of N is related to the output bit length E.
[0073] E represents the length of the output sequence, which is related to the available resources.
[0074] The channel transmission method, apparatus, terminal, network-side equipment, and medium provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.
[0075] The channel transmission method provided in this application can be applied to scenarios where PDCCH is repeatedly transmitted.
[0076] For example, the terminal can determine whether to listen to or receive a PDCCH based on the first information; wherein, the PDCCH includes M PDCCH candidates or L PDCCH listening opportunities, the M PDCCH candidates have the same or different aggregation levels, or the M PDCCH candidates in the L PDCCH listening opportunities have the same or different aggregation levels, and M and L are both integers greater than or equal to 2; the first information includes at least one of the following: the PDCCH merging method; the reference aggregation level; the configuration information of the reference search space set; the configuration information of the search space; the configuration information of the control resource set; the configuration information of the listening opportunity; and the type of the wireless network temporary identifier.
[0077] Thus, since the terminal can determine whether to listen to or receive a PDCCH based on the first information, and this listening or receiving of a PDCCH includes M PDCCH candidates or L PDCCH listening opportunities, where the aggregation levels of the M PDCCH candidates are the same or different, or the aggregation levels of the M PDCCH candidates among the L PDCCH listening opportunities are the same or different, it is not necessary to require that the aggregation levels of the M PDCCH candidates be exactly the same when merging PDCCH candidates. Therefore, for terminals with limited bandwidth resources, this can improve the coverage performance of PDCCH, increase the capacity of PDCCH within the system, and flexibly utilize PDCCH resources. For example, when receiving a PDCCH, the aggregation levels AL{1,2,4,816} and AL{1,2,4,816} can be arbitrarily combined, allowing the terminal's PDCCH to meet performance requirements while improving system resource utilization.
[0078] It should be noted that the channel (information) transmission method provided in this application embodiment is only illustrated using PDCCH transmission as an example. PDCCH can also be replaced by DCI or a physical downlink channel. DCI can include only a first-level DCI, or include a first-level DCI and / or a second-level DCI. DCI can be transmitted in PDCCH or in a physical downlink shared channel (PDSCH). Additionally, PDCCH can also be replaced by a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), or uplink control information (UCI). Alternatively, PDCCH can be replaced by a physical sidelink control channel (PSCCH), a physical sidelink shared channel (PSSCH), or sidelink control information (SCI). In actual implementation, it can also be a channel or information encoded using Polar coding.
[0079] It should also be noted that in the channel (information) transmission method provided in this application embodiment, the search space set can be replaced with a search space. Furthermore, the search space set may include one or more search spaces.
[0080] This application provides a channel transmission method. FIG2 shows a flowchart of a channel transmission method provided by some embodiments of this application. As shown in FIG2, a channel transmission method provided by some embodiments of this application may include the following step 201.
[0081] Step 201: The terminal determines whether to listen to or receive the PDCCH based on the first information.
[0082] Wherein, the listening or receiving of the above PDCCH includes M PDCCH candidates or L PDCCH listening opportunities, the M PDCCH candidates have the same or different aggregation levels, or the M PDCCH candidates in the L PDCCH listening opportunities have the same or different aggregation levels, and M and L are both integers greater than or equal to 2.
[0083] The first information includes at least one of the following:
[0084] The merging method of PDCCH;
[0085] Refer to the aggregation level;
[0086] Refer to the configuration information of the search space collection;
[0087] Search space configuration information;
[0088] Control the configuration information of the resource set;
[0089] Configuration information for monitoring opportunities;
[0090] The type of temporary identifier for wireless networks.
[0091] In some embodiments of this application, the M PDCCH candidates or the L PDCCH listening opportunities may be associated; or, the search space set corresponding to the M PDCCH candidates or the search space set corresponding to the L PDCCH listening opportunities may be associated; or, the control resource set of the search space set corresponding to the M PDCCH candidates or the control resource set of the search space set corresponding to the L PDCCH listening opportunities may be associated.
[0092] In some embodiments of this application, since the M PDCCH candidates, the L PDCCH listening opportunities, the search space set corresponding to the M PDCCH candidates, the search space set corresponding to the L PDCCH listening opportunities, the control resource set of the search space set corresponding to the M PDCCH candidates, or the control resource set of the search space set corresponding to the L PDCCH listening opportunities can be associated, PDCCH reception can be performed on the M PDCCH candidates included in the PDCCH or the M PDCCH candidates in the L PDCCH listening machines, and the same or different PDCCH resources can be configured for the associated identical or different PDCCH candidates, thereby allowing for flexible use of PDCCH resources. The M PDCCH candidates can correspond to the same DCI payload, and the coded bits corresponding to the M PDCCH candidates can be different or the same.
[0093] In some embodiments of this application, the reception of PDCCH includes M PDCCH candidates. Furthermore, the M PDCCH candidates can be merged, or decoding can be performed independently on each of the M PDCCH candidates.
[0094] In some embodiments of this application, the merging method of the PDCCH described above may include at least one of a first merging method and a second merging method.
[0095] The first and second merging methods differ.
[0096] In some embodiments of this application, the first merging method can be a soft merging (Chase Combine, CC), and the second merging method can be an incremental redundancy (IR); or, the first merging method can be IR, and the second merging method can be CC.
[0097] In some embodiments of this application, the above-mentioned M PDCCH candidates can be merged based on at least one of a first merging method and a second merging method.
[0098] In some embodiments of this application, since the above-mentioned PDCCH merging method may include at least one of the first merging method and the second merging method, the PDCCH listening or receiving can be determined according to different PDCCH merging methods, thereby improving the flexibility of determining the PDCCH listening or receiving.
[0099] In some embodiments of this application, the above-mentioned reference aggregation level can be used to determine at least one of the following 1.1 to 1.4:
[0100] 1.1 The output sequence e of the above PDCCH k Or the encoded bit sequence e sent by the aforementioned PDCCH k Or the encoded bit sequence e received by the aforementioned PDCCH k ;
[0101] 1.2 The length E of the output sequence of the PDCCH, or the length E of the encoded bits transmitted by the PDCCH, or the length E of the encoded bits received by the PDCCH;
[0102] 1.3 The encoded bit sequence e transmitted by the PDCCH mentioned above k Or the sequence y of the ring buffer encoded by the above PDCCH n Or the sequence y of the ring buffer decoded by the above PDCCH n ;
[0103] 1.4 The length E of the encoded bits transmitted by the PDCCH, or the length N of the ring buffer encoded by the PDCCH, or the sequence length N of the ring buffer decoded by the PDCCH.
[0104] In some embodiments of this application, the sequence includes two features: one is the information carried by the sequence itself, and the other is the length of the sequence. In fact, the aforementioned reference aggregation level can be used to determine the final output sequence of the PDCCH.
[0105] In some embodiments of this application, both the sending end and the receiving end generate a sequence based on the aforementioned output sequence. The sending end transmits the PDCCH, and the receiving end receives the PDCCH. That is, the output sequence of the aforementioned PDCCH can be either a sequence transmitted by the sending end or a sequence received by the receiving end.
[0106] In some embodiments of this application, the length of the output sequence after rate matching is directly related to the resource size. The aforementioned E also affects the encoded bits.
[0107] In some embodiments of this application, encoding is actually sending, and decoding is actually listening or receiving.
[0108] In some embodiments of this application, since the above reference aggregation level can be used to determine at least one of 1.1 to 1.4 above, the listening or receiving of PDCCH can be determined according to the reference aggregation level with different functions, thereby improving the flexibility of determining the listening or receiving of PDCCH.
[0109] In some embodiments of this application, the aggregation levels of the above-mentioned M PDCCH candidates may include any of the following:
[0110] The aggregation level corresponding to the M PDCCH candidates received or detected by the terminal;
[0111] At least one aggregation level configured in at least one search space of the above M PDCCH candidate associations.
[0112] In some embodiments of this application, after detecting a PDCCH candidate, the terminal can determine the aggregation level corresponding to the PDCCH candidate, or associate the aggregation level corresponding to the PDCCH candidate.
[0113] In some embodiments of this application, the aforementioned M PDCCH candidates may be configured by the terminal.
[0114] In some embodiments of this application, since the aggregation level of the above M PDCCH candidates may include the aggregation level corresponding to the M PDCCH candidates received or detected by the terminal, or at least one aggregation level configured in at least one search space associated with the above M PDCCH candidates, the monitoring or reception of PDCCH can be determined according to the different aggregation levels of the above M PDCCH candidates, thereby improving the flexibility of determining the monitoring or reception of PDCCH.
[0115] In some embodiments of this application, the configuration information of the aforementioned reference search space set can be considered as the configuration information of the search space; wherein, the configuration information of the search space may further include the linked slot number, etc. Alternatively, the configuration information of the listening opportunity includes the linked slot number.
[0116] In some embodiments of this application, the aforementioned reference search space set may include any one of the following 2.1 to 2.9:
[0117] 2.1 The search space set of the PDCCH candidates with the smallest aggregation level corresponding to the above M PDCCH candidates;
[0118] 2.2 The search space set with the smallest aggregation level configured among the search space sets corresponding to the above M PDCCH candidates;
[0119] 2.3 The search space set corresponding to the minimum aggregation level configured in the search space set;
[0120] 2.4 The set of search spaces corresponding to the minimum aggregation level of the above M PDCCH candidates, provided that the first condition is met, wherein the first condition includes the PDCCH bit rate determined according to the aggregation level being higher than a preset value.
[0121] 2.5 The set of search spaces corresponding to the minimum search space set number;
[0122] 2.6 The search space set corresponding to the largest search space set number;
[0123] 2.7 The search space set corresponding to the network-configured or predefined search space set number;
[0124] 2.8 The search space set associated with the control resource set corresponding to the minimum or maximum control resource set number in the search space set of the above M PDCCH candidates;
[0125] 2.9 The set of search spaces configured within the control resource set corresponding to the control resource set number.
[0126] In some embodiments of this application, for 2.1 and 2.2 above, encoding is performed on the basis of the smallest resource. Larger AL resources can be broken down into repeated sequence bits and CC merged.
[0127] For example, taking the case where the reference search space set includes the above 2.1, SS1{AL 1, AL 4}, SS2{AL 2, AL 8}. If the PDCCH candidate with AL 1 in SS1 is linked with the PDCCH candidate with AL 2 in SS2, and AL 1<AL 2, SS1 is used as the reference SS.
[0128] For example, taking the case where the reference search space set includes the above 2.2, SS1{AL 1, AL 4}, SS2{AL 2, AL 8}. The minimum min AL_ss1 configured in SS1 is 1, and the minimum min AL_ss2 configured in SS2 is 2. Min{min AL_ss1, min AL_ss2}=1 corresponds to the minimum AL of SS1, so SS1 is the reference search space. Wherein, AL_ss2 represents the AL configured in SS2, and min AL_ss2 represents the minimum value of AL configured in SS2.
[0129] In some embodiments of the present application, for the above 2.4, the resource units of PDCCH need at least ensure that the PDCCH can be demodulated, otherwise repetition is useless. Information carried on PDCCH candidates that do not satisfy the first condition may be subjected to IR combining.
[0130] In some embodiments of the present application, since the above reference search space set may include any one of the above 2.1 to 2.9, PDCCH monitoring or reception can be determined according to different reference search space sets, thereby improving the flexibility of determining PDCCH monitoring or reception.
[0131] In some embodiments of the present application, the reference aggregation level or one or more aggregation levels of the M PDCCH candidates may satisfy at least one of the following 3.1 to 3.6:
[0132] 3.1 is a value configured by the network or a predefined value of a protocol;
[0133] 3.2 is determined according to the aggregation levels of the M PDCCH candidates;
[0134] 3.3 is determined according to one or more search spaces associated with the M PDCCH candidates;
[0135] 3.4 is determined according to the reference search space;
[0136] 3.5 is determined according to the linked search space set;
[0137] 3.6 is determined according to the linked control resource set.
[0138] In some embodiments of this application, the reference aggregation level received by the PDCCH in the following configurations is a predefined value:
[0139] 1. CORESET 0;
[0140] 2.SS 0;
[0141] 3. Type 0 / Type 0A / Type 0B / Type 1 / Type 2 Common search space (CSS);
[0142] 4. Type 3CSS.
[0143] In some embodiments of this application, the reference aggregation level is per pair(s) PDCCH candidate or per M PDCCH candidates, or per SS, or per SS group configured or predefined values.
[0144] In some embodiments of this application, the aforementioned reference aggregation level or one or more aggregation levels of the aforementioned M PDCCH candidates can be the smallest, lesser, or nth smallest value among the aggregation levels of the aforementioned M PDCCH candidates, or it can be the largest, greater, or nth largest value among the aggregation levels of the aforementioned M PDCCH candidates. Wherein, n is a predefined or configured value, and n is an integer greater than 1.
[0145] It should be noted that if a small aggregation level is selected for encoding, then either CC merging or IR merging can be performed. If a large aggregation level is selected for encoding, then only IR merging can be performed.
[0146] In some embodiments of this application, the aforementioned reference aggregation level or one or more aggregation levels of the aforementioned M PDCCH candidates can be determined based on the aggregation level corresponding to the PDCCH candidate monitored or detected in the search space corresponding to the largest, smallest, or pre-configured search space number in the one or more search spaces. Essentially, it involves finding a reference SS based on the SS id and determining the aggregation level based on the PDCCH candidate AL detected within the reference SS.
[0147] In some embodiments of this application, the aforementioned reference aggregation level or one or more aggregation levels of the aforementioned M PDCCH candidates can be determined based on the aggregation level corresponding to the PDCCH candidate monitored or detected in the search space corresponding to the largest, smallest, or pre-configured CORESET number in the CORESET associated with the one or more search spaces. Essentially, this involves finding a reference SS based on the CORESET id and determining the aggregation level based on the PDCCH candidate AL detected within the reference SS.
[0148] In some embodiments of this application, the aforementioned reference aggregation level or one or more aggregation levels of the aforementioned M PDCCH candidates can be determined based on a configured reference search space. For example, it can be the aggregation level corresponding to a detected or received PDCCH candidate in the reference search space.
[0149] In some embodiments of this application, since the above-mentioned reference aggregation level or one or more aggregation levels of the above-mentioned M PDCCH candidates can satisfy at least one of 3.1 to 3.6 above, the listening or receiving of PDCCH can be determined according to the reference aggregation level or one or more aggregation levels of the above-mentioned M PDCCH candidates determined in different ways, thereby improving the flexibility of determining the listening or receiving of PDCCH.
[0150] In some embodiments of this application, the at least one search space set associated with the PDCCH may include the L listening opportunities.
[0151] The aforementioned L listening opportunities are determined according to at least one of the following 4.1 to 4.4:
[0152] 4.1 The time-domain resource locations of L1 listening opportunities included in at least one of the above search space sets, or the time-domain resource locations of L1 listening opportunities configured or predefined by the network, or the time-domain resource locations of L1 configured by the network; wherein, L1 is less than or equal to L;
[0153] 4.2 The frequency domain resource locations of the L2 listening opportunities included in at least one of the search space sets mentioned above, or the frequency domain resource locations of the L2 listening opportunities configured or predefined by the network, or the L2 frequency domain resource locations configured by the network; wherein, L2 is less than or equal to L;
[0154] 4.3 The offset value of the listening opportunity in one of the search space sets defined by the network configuration or protocol;
[0155] 4.4. Frequency domain offset values of listening opportunities in one of the search space sets defined by the network configuration or protocol.
[0156] Wherein, in the case where at least one search space set includes at least two search space sets, the at least two search space sets may have the same or different numbers.
[0157] For example, SS0 in slot n and SS0 in slot m are both SS0, but they are located in different listening opportunities (slot n and slot m). This can be considered as multiple sets of search spaces, or it can be defined as a single set of search spaces. The difference here is uncertainty: whether an SS is defined solely by its SS number, or by its SS number plus time-frequency domain resources. In this case, SS0 in slot n and SS0 in slot m are considered different SSs. If it is a single search space set SS0, then SS0 is associated with two listening opportunities (the listening opportunities in slot n and slot m).
[0158] In some embodiments of this application, the offset value of the listening opportunity in the above-mentioned at least one search space set can be: the offset value between the start time of the nth listening opportunity and the start time of the (n-1)th / 1st / reference listening opportunity.
[0159] In some embodiments of this application, the offset value of the listening opportunity in the above-mentioned at least one search space set can be: the offset value between the start time of the nth listening opportunity and the end time of the (n-1)th / 1st / reference listening opportunity.
[0160] In some embodiments of this application, the frequency domain offset value of the listening opportunity in the above-mentioned at least one search space set can be: the offset value between the starting CCEs of the nth listening opportunity and the starting CCEs of the (n-1)th / 1st / reference listening opportunity.
[0161] In some embodiments of this application, the frequency domain offset value of the listening opportunity in the above-mentioned at least one search space set can be: the offset value between the starting CCEs of the nth listening opportunity and the ending CCEs of the (n-1)th / 1st / reference listening opportunity.
[0162] In some embodiments of this application, since the L listening opportunities are determined according to at least one of 4.1 to 4.4 above, the L listening opportunities can be determined in different ways, thereby improving the flexibility of determining the L listening opportunities.
[0163] In some embodiments of this application, the association between the first search space and the second search space corresponding to the above-mentioned PDCCH can be determined according to at least one of the following 5.1 to 5.4:
[0164] 5.1 The association between the third PDCCH candidate in the first search space and the fourth PDCCH candidate in the second search space;
[0165] 5.2 The network configuration associates the third PDCCH candidate in the first search space with the fourth PDCCH candidate in the second search space;
[0166] 5.3 Network configuration: Association aggregation level multiple between the first and second search spaces;
[0167] 5.4 The network configuration or protocol predefines the candidate offset value between the third PDCCH candidate in the first search space and the fourth PDCCH candidate in the second search space.
[0168] In some embodiments of this application, for condition 5.1 above, the third PDCCH candidate and the fourth PDCCH candidate are associated if the fourth condition is met.
[0169] The fourth condition includes at least one of the following:
[0170] The aggregation levels configured in the first search space and the aggregation levels in the second search space are integer multiples of each other;
[0171] The third PDCCH candidate and the fourth PDCCH have the same number;
[0172] The number of PDCCH candidates is the same for the associated aggregation level configurations.
[0173] For example, taking the fourth condition as an example where the aggregation levels configured in the first search space and the aggregation levels in the second search space are integer multiples of each other, SS1 is configured with AL2 and AL4; SS2 is configured with AL4 and AL8. Here, AL2 in SS1 is associated with AL4 in SS2; and AL4 in SS1 is associated with AL8 in SS2.
[0174] For example, taking the fourth condition as including the third and fourth PDCCH candidates having the same number, SS1 configures AL2 to correspond to PDCCH candidate num=6; SS2 configures AL=4 to correspond to PDCCH candidate num=4, and AL=8 to correspond to PDCCH candidate num=2. It can be assumed that AL2 is associated with AL4, and also associated with AL8. Only defining the PDCCH candidate m as the same is necessary.
[0175] For example, if the fourth condition includes the same number of PDCCH candidates configured with the associated aggregation level, the number of PDCCH candidates configured with AL 2 in SS1 is the same as the number of PDCCH candidates configured with AL=4 in SS2.
[0176] In some embodiments of this application, for 5.3 above, the terminal considers the PDCCH candidate of aggregation level AL1 in SS1 to be associated with the corresponding (AL1*N) PDCCH candidate in SS2 based on the aggregation level multiple N configured in the network and the received SS1 and SS2.
[0177] In some embodiments of this application, regarding 5.4 above, if the third PDCCH candidate is PDCCH candidate m and the fourth PDCCH candidate is PDCCH candidate n, then there exists a relationship n = m + the aforementioned candidate offset value. In this case, non-linked PDCCH candidates can exist in the second search space and can also be used for independent PDCCH demodulation.
[0178] In some embodiments of this application, since the association between the first search space and the second search space corresponding to the above PDCCH can be determined according to at least one of 5.1 to 5.4 above, the association between the first search space and the second search space can be determined in different ways, thereby improving the flexibility of determining the association between the first search space and the second search space.
[0179] In some embodiments of this application, the first information may be reported by the terminal or configured by the network.
[0180] Optionally, in the embodiments of this application, when the first information is network configuration, the configuration information of the first information may be carried by at least one of the following signaling: RRC (radio resource control, e.g., cell specific RRC or UE specific RRC), MIB (master information block), SIB (system information block), MAC CE (media access control control element), PDCCH (e.g., dedicated PDCCH, group common PDCCH or 1st stage DCI).
[0181] In some embodiments of this application, since the first information can be reported by the terminal or configured by the network, the monitoring or reception of the PDCCH can be determined based on the first information reported by the terminal, or the monitoring or reception of the PDCCH can be determined based on the first information configured by the network, thereby improving the flexibility of determining the monitoring or reception of the PDCCH.
[0182] In some embodiments of the channel transmission method provided in this application, since the terminal can determine whether to listen to or receive the PDCCH based on the first information, and the listening to or receiving of the PDCCH includes M PDCCH candidates or L PDCCH listening opportunities, the aggregation levels of the M PDCCH candidates are the same or different, or the aggregation levels of the M PDCCH candidates in the L PDCCH listening opportunities are the same or different, it is not necessary to require that the aggregation levels of the M PDCCH candidates be completely the same when merging PDCCH candidates. Thus, for terminals with limited bandwidth resources, the PDCCH resources can be used flexibly, and for terminals with limited bandwidth resources, system resources can be fully utilized when resources are insufficient.
[0183] In some embodiments of this application, the first information includes the aforementioned reference aggregation level. Exemplarily, some embodiments of this application provide a channel transmission method that may further include steps 202 and 203 as described below.
[0184] Step 202: The terminal determines the second information based on the aggregation level of the m-th PDCCH candidate among the M PDCCH candidates and the reference aggregation level.
[0185] Step 203: The terminal listens for or receives the PDCCH based on the second information.
[0186] The second piece of information includes at least one of the following:
[0187] The number of listening opportunities among the above M PDCCH candidates;
[0188] The number of blind checks in the search space set associated with the above PDCCH;
[0189] The number of blind checks corresponding to the aggregation level of the m-th PDCCH candidate.
[0190] In some embodiments of this application, the number of listening opportunities among the above M PDCCH candidates can be: the value of AL_cand2 / AL_ref, that is, how many times the resources are considered to be the number of MOs, and how many PDCCHs are merged accordingly; or it can be: the value of AL_cand2 / AL_ref + 1, for example, AL_ref=2, AL_cand2=4, it can be considered that the terminal is a repetition of two PDCCHs with AL=2 in PDCCH candidate 2.
[0191] In some embodiments of this application, the number of blind checks in the search space set associated with the PDCCH can be: the value of AL_cand2 / AL_ref, or the value of AL_cand2 / AL_ref + 1 (+1 represents the BDs corresponding to the joint decoding of two AL=2).
[0192] In some embodiments of this application, step 202 described above can be implemented by step 202a as follows.
[0193] Step 202a: If the second condition is met, the terminal determines the second information based on the aggregation level of the m-th PDCCH candidate and the reference aggregation level.
[0194] The second condition includes any one of the following:
[0195] The aggregation levels of the above M PDCCH candidates are greater than or equal to the reference aggregation level;
[0196] The aggregation level of the second PDCCH candidate in the first search space associated with the above PDCCH is greater than or equal to the above reference aggregation level.
[0197] For example, as shown in Figure 3, the PDCCH candidate configured with AL=2 in SS1 is associated with the PDCCH candidate configured with AL=4 in SS2. Referencing AL_ref=2, the number of MOs in SS2 is AL=4 / (AL_ref=2)=2, meaning there are two corresponding MOs in SS2.
[0198] In some embodiments of this application, since the terminal can first determine the second information based on the aggregation level and reference aggregation level of the m-th PDCCH candidate among M PDCCH candidates, and then perform PDCCH listening or receiving according to the second information, the terminal can flexibly perform PDCCH listening or receiving, so that the terminal's PDCCH can improve the system's resource utilization while meeting performance requirements.
[0199] In some embodiments of this application, the resources of any PDCCH candidate among the M PDCCH candidates can be determined based on the aggregation level configured in the search space associated with the PDCCH.
[0200] In some embodiments of this application, different PDCCH candidates determine the CCE resources of the PDCCH candidate embedded with AL.
[0201] In some embodiments of this application, the resources of any of the above-mentioned PDCCH candidates may include the resources of the CCEs of that PDCCH candidate. The resources of the CCEs of that PDCCH candidate are determined according to at least one of the following: the numbering order of the CCEs in the search space associated with the PDCCH, the time-domain numbering order, and the interleaving style; wherein, the numbering of the CCEs in the search space associated with the PDCCH is determined according to the aggregation level configured in the search space associated with the PDCCH.
[0202] In some embodiments of this application, when the resources of the CCE of any PDCCH candidate are determined according to the numbering order of the CCEs in the search space associated with the PDCCH, they can be allocated to different MOs or different PDCCH candidates according to the numbering order of the CCEs.
[0203] In some embodiments of this application, the above-mentioned interleaving pattern may be predefined by the protocol, configured by the network, or configured by the terminal.
[0204] For example, if CCE 4, CCE 5, CCE 6, and CCE 7 are determined to be resources in SS2 based on A=4, then:
[0205] 1. CCE 4 and CCE 5 are the resources of the MO / PDCCH candidate corresponding to the first AL=2 in SS2; CCE 6 and CCE 7 are the resources of the MO / PDCCH candidate corresponding to the second AL=2 in SS2; (sequential mapping)
[0206] 2. Alternatively, CCE 4 and CCE 6 are resources for the first MO / PDCCH candidate corresponding to AL=2 in SS2; CCE 5 and CCE 7 are resources for the second MO / PDCCH candidate corresponding to AL=2 in SS2.
[0207] 3. Alternatively, CCE 4 and CCE 7 are resources for the first MO / PDCCH candidate corresponding to AL=2 in SS2; CCE 5 and CCE 6 are resources for the second MO / PDCCH candidate corresponding to AL=2 in SS2.
[0208] In some embodiments of this application, since the resources of any PDCCH candidate among the above M PDCCH candidates can be determined according to the aggregation level configured in the search space associated with the above PDCCH, the resources of the determined PDCCH candidate can be improved.
[0209] In some embodiments of this application, the first information includes the aforementioned reference aggregation level. Exemplarily, some embodiments of this application provide a channel transmission method that may further include steps 204 and 205 as described below.
[0210] Step 204: The terminal determines the third information based on the reference aggregation level.
[0211] Step 205: The terminal listens for or receives the PDCCH based on the third information.
[0212] The third information includes at least one of the following:
[0213] The output sequence y of the ring buffer n n = 0, ..., N-1 (n is from 0 to N-1);
[0214] The length N of the ring buffer;
[0215] Encoded bit sequence e k k = 0, ..., E-1 (k ranges from 0 to E-1);
[0216] The length E of the encoded bit sequence.
[0217] In some embodiments of this application, the output sequence of at least one of the first PDCCH candidate and the second PDCCH candidate in the above-mentioned PDCCH can be determined according to at least one of the following:
[0218] The output sequence y of the ring buffer n ;
[0219] Encoded bit sequence e k ;
[0220] The output sequence y of the ring buffer n The starting position;
[0221] Encoded bit sequence e k The starting position;
[0222] Predefined starting position;
[0223] The starting position of the configuration;
[0224] The output sequence y of the ring buffer n Or encoded bit sequence e kThe Eth sequence bit;
[0225] The output sequence y of the ring buffer n Or encoded bit sequence e k The E2nd sequence bit;
[0226] The output sequence y of the ring buffer n Or encoded bit sequence e k The E1st sequence bit;
[0227] Where E1 is the bit length of the first PDCCH candidate and E2 is the bit length of the second PDCCH candidate.
[0228] The specific determination method is shown in at least one of the following:
[0229] The output sequence y of the above ring buffer n , or the above encoded bit sequence e k ;
[0230] Starting position is y n The starting position is y0, or the starting position is e. k The starting position is e0;
[0231] The starting position is a predefined or configured position;
[0232] The first PDCCH candidate's encoded bit sequence From the output sequence y of the above ring buffer n Or encoded bit sequence e k The Eth sequence bit y E-1 Then start taking E1 bits of the sequence; for example: or, k = 0 to E1-1. When k = 0... express The first sequence of bits.
[0233] The coded bit sequence of the first PDCCH candidate From the output sequence y of the above ring buffer n Or encoded bit sequence e k The E2nd sequence bit y E2-1 Then start taking E1 bits of the sequence; for example: or, k = 0 ~ E1-1.
[0234] The coded bit sequence of the second PDCCH candidate From the output sequence y of the above ring buffer n Or encoded bit sequence e kThe E1st sequence bit y E1-1 Then start taking E2 sequence bits; for example: or, k = 0 ~ E2-1.
[0235] The coded bit sequence of the second PDCCH candidate From the output sequence y of the above ring buffer n Or encoded bit sequence e k The Eth sequence bit y E-1 Then start taking E2 sequence bits; for example: or, k = 0 ~ E2-1.
[0236] In some embodiments of this application, the predefined or configured position can be 1 encoding bit; or N1*m. Here, m is an integer, and N1 is a configured value or the length of the encoding bit determined according to CCE units.
[0237] In some embodiments of this application, the number of the above-mentioned M PDCCH candidates can be 3 or a larger value, and the Mth PDCCH sequence can also be determined according to the above method.
[0238] It should be noted that, since the sequence and sequence length are two parameters, in this embodiment, yn represents the sequence of the ring buffer with a length of N; ek represents the encoded bit sequence; and the superscript represents the number of the PDCCH candidate.
[0239] In some embodiments of this application, the first sub-PDCCH candidate of the second PDCCH candidate, or the first sub-PDCCH candidate corresponding to the first listening opportunity among the L listening opportunities mentioned above, can be determined according to at least one of the following:
[0240] The output sequence y of the ring buffer n ;
[0241] Encoded bit sequence e k ;
[0242] The output sequence y of the ring buffer n The starting position;
[0243] Encoded bit sequence e k The starting position;
[0244] The output sequence y of the ring buffer n Or encoded bit sequence e k The Eth sequence bit;
[0245] The output sequence y of the ring buffer n Or encoded bit sequence ek The E1st sequence bit.
[0246] The specific determination method is shown in at least one of the following:
[0247] Starting position is y n The starting position is y0, or the starting position is e. k The starting position e0, or Starting from the initial position;
[0248] The encoded bit sequence of the first sub-PDCCH candidate From the output sequence y of the above ring buffer n Or encoded bit sequence e k The Eth sequence bit y E-1 Then start taking E2 - 1 sequence of bits;
[0249] The encoded bit sequence of the first sub-PDCCH candidate From the output sequence y of the above ring buffer n Or encoded bit sequence e k The E1st sequence bit y E1-1 Then start taking E2 - 1 sequence of bits;
[0250] Among them, E2 - 1 represents the coded bit length of the first sub-PDCCH candidate.
[0251] in, The superscript 1 indicates the sequence E1, k indicates the k-th bit, k = 0, 1, ..., E1-1. E1 represents the length. Indicates the first PDCCH candidate sequence; This indicates the second PDCCH candidate sequence. This represents the first subsequence of the second PDCCH candidate; This represents the second subsequence of the second PDCCH candidate; The superscript m represents the candidate number m of PDCCH, and the superscript y represents the subsequence number Y.
[0252] For example, The starting position can be
[0253] In some embodiments of this application, the second sub-PDCCH candidate of the second PDCCH candidate, or the second sub-PDCCH candidate corresponding to the second listening opportunity among the L listening opportunities mentioned above, can be determined according to at least one of the following:
[0254] The output sequence y of the ring buffer n ;
[0255] Encoded bit sequence e k ;
[0256] Encoded bit sequence
[0257] The output sequence y of the ring buffer n The starting position;
[0258] Encoded bit sequence e k The starting position;
[0259] Encoded bit sequence The starting position;
[0260] The output sequence y of the ring buffer n Or encoded bit sequence e k The Eth sequence bit;
[0261] The output sequence y of the ring buffer n Or encoded bit sequence e k The E1st sequence bit;
[0262] The output sequence y of the ring buffer n Encoded bit sequence e k E2 - One sequence of bits.
[0263] Among them, the above-mentioned encoded bit sequence The output sequence, encoded sequence, or decoded sequence of the first PDCCH candidate.
[0264] The specific determination method is shown in at least one of the following:
[0265] Starting position is y n The starting position is y0, or the starting position is e. k It starts from the starting position e0, or the starting position of E1;
[0266] The encoded bit sequence of the second sub-PDCCH candidate From the output sequence y of the above ring buffer n Or encoded bit sequence e k The Eth sequence bit y E-1 Then start taking E2 - 2 sequence bits;
[0267] The encoded bit sequence of the second sub-PDCCH candidate From the output sequence y of the above ring buffer n Or encoded bit sequence ek The E1st sequence bit y E1-1 Then start taking E2 - 2 sequence bits;
[0268] E2 - The coded bit sequence of the second sub-PDCCH candidate begins after step 1. From the output sequence y of the above ring buffer n Or encoded bit sequence e k E2 - 1 sequence of bits y E2-1 Then start taking E2 - 2 sequence bits;
[0269] Among them, E2 - 2 represents the bit length of the second sub-PDCCH candidate.
[0270] In some embodiments of this application, the sequence of at least one of the first PDCCH candidate and the second PDCCH candidate, or the first sub-PDCCH of the second PDCCH candidate, or the second sub-PDCCH of the second PDCCH candidate, can be determined according to at least one of the following:
[0271] The payload of downlink control information;
[0272] The payload size of downlink control information;
[0273] The above reference aggregation level sequence encoding bits;
[0274] The sequence encoding bits of the second PDCCH candidate;
[0275] The sequence encoding bits of the first PDCCH candidate;
[0276] The sequence encoding bits of the first sub-PDCCH of the second PDCCH candidate;
[0277] The sequence encoding bits of the second sub-PDCCH of the second PDCCH candidate.
[0278] In some embodiments of this application, the first sub-PDCCH of the second PDCCH candidate can actually be more sub-control channels. For example, PDCCH candidate 1 has AL=2. PDCCH candidate 2 has AL=8 with AL=2 as the aggregation level. AL=8 is four times AL=2, and here PDCCH candidate 2 can include four sub-control channels: sub-control channel 1, sub-control channel 2, sub-control channel 3, and sub-control channel 4.
[0279] In some embodiments of this application, the load includes the information carried on the load, as well as the size of the load, which is also the size of the information.
[0280] For example, when performing bit selection, the relationship with N is determined based on E2 / 2; the relationship between K / (E2 / 2) and the preset code rate (e.g., 7 / 16) is determined based on E2 / 2. As shown in Figure 4, the output sequence of E1, E2 (E2_1, E2_2) is determined based on the N buffer; as shown in Figure 5, the output sequence of E1, E2 is determined based on the E buffer.
[0281] In some embodiments of this application, step 204 can be specifically implemented by step 204a as described below.
[0282] Step 204a: If the third condition is met, the terminal determines the third information based on the reference aggregation level.
[0283] The third condition includes any one of the following:
[0284] The aggregation level of the second PDCCH candidate in the above PDCCH is lower than the above reference aggregation level;
[0285] The aggregation levels of the above M PDCCH candidates are greater than or equal to the reference aggregation level of the above PDCCH;
[0286] The aggregation level of the second PDCCH candidate in the first search space associated with the above PDCCH is lower than the above reference aggregation level.
[0287] In some embodiments of this application, since the terminal can first determine the third information based on the reference aggregation level, and then listen to or receive the PDCCH according to the third information, the terminal can flexibly listen to or receive the PDCCH, so that the terminal's PDCCH can improve the system's resource utilization while meeting performance requirements.
[0288] In some embodiments of this application, the channel transmission method provided in some embodiments of this application may further include the following step 206.
[0289] Step 206: The terminal reports the capability information of M PDCCH candidates.
[0290] The aforementioned capability information includes at least one of the following:
[0291] The soft merging methods supported by the terminal;
[0292] The terminal supports the ability to receive PDCCHs of different aggregation levels, either repeatedly or at different aggregation levels.
[0293] The number of PDCCH candidates that the terminal supports receiving;
[0294] The terminal supports the ability to receive PDCCHs from different resources or at different aggregation levels;
[0295] The terminal supports the ability to repeat PDCCH for different resources or different aggregation levels.
[0296] In some embodiments of this application, the soft merging method supported by the terminal may include at least one of the following:
[0297] CC merging is supported only;
[0298] IR merging is supported only;
[0299] Supports CC merging and IR merging;
[0300] Whether IR merging is supported; if IR merging is supported, it is assumed that both IR and CC merging are supported; if IR merging is not supported, it is assumed that only CC merging is supported.
[0301] CC merging is supported by default.
[0302] In some embodiments of this application, since the terminal can report capability information of M PDCCH candidates, the network-side device can obtain the capability information and thus perform reasonable and accurate PDCCH transmission.
[0303] In some embodiments of this application, the channel transmission method provided in some embodiments of this application may further include the following step 207.
[0304] Step 207: The terminal listens for or receives PDCCH based on at least three search spaces configured in the network.
[0305] Among these, the aggregation levels of PDCCH candidates in different search spaces within the aforementioned at least three search spaces are the same.
[0306] In some embodiments of this application, the network may be configured with a search space group linking list that includes at least the three search spaces mentioned above. The aggregation level of PDCCH candidates within different search spaces is the same.
[0307] In some embodiments of this application, the resources of the PDCCH candidates in the above-mentioned at least three search spaces can be determined according to the numbering of the at least three search spaces.
[0308] For example, the PDCCH candidate resource in the m-th search space is determined by its ID m. Additionally, the PDCCH candidate resource in the m-th search space can be determined by m and other IDs (e.g., the IDs of the other two search space sets).
[0309] In some embodiments of this application, when the above-mentioned at least three search spaces are associated with the same set of control resources, the PDCCH candidate resources in the a-th search space among the at least three search spaces can be determined according to at least one of the following:
[0310] Search space number a;
[0311] Search space number a-1;
[0312] Resource ID of the PDCCH candidate in the (a-1)th search space;
[0313] The resource number of the PDCCH candidate in the A1th search space, where A1 is a configured or defined parameter, or determined according to a configured or predefined parameter, or the smallest search space number among the search space numbers of the at least three search spaces, or the largest search space number among the search space numbers of the at least three search spaces, or the smallest search space number in the associated control resource set, or the largest search space number in the associated control resource set.
[0314] The number of search spaces configured in the control resource set associated with the a-th search space;
[0315] Where a is a positive integer.
[0316] In some embodiments of this application, the CCE position of the PDCCH candidate can be determined according to the search space number using the following formula (2):
[0317] Where s is the search space number.
[0318] For example, taking the resource of the PDCCH candidate in the a-th search space as determined by the resource number of the PDCCH candidate in the (a-1)-th search space as an example, as shown in Figure 6, the CCE index of SS2 is {CCE 0, CCE 1}, and the CCE index of SS3 is {CCE 0, CCE 1} + 2 = {CCE 2, CCE 3}. This is equivalent to the position of a PDCCH candidate with AL = 4. Within this COREST, it is relatively easy to coexist with other CORESTs that do not perform PDCCH repetition. This may not be very meaningful for low bandwidth applications, but it is more meaningful if extended to high bandwidth applications.
[0319] In some embodiments of this application, when the resources of the PDCCH candidates in the a-th search space are determined according to the number of search spaces configured in the control resource set associated with the a-th search space, the PDCCH candidates in the search space can be determined according to the following formula (3) or formula (4):
[0320] Where k is the number of the search spaces, k = 0, ..., K-1.
[0321] In some embodiments of this application, since the terminal can listen to or receive PDCCH based on at least three search spaces configured by the network, it can determine the PDCCH candidate CCE of SS within the same CORESET, thereby improving the flexibility of using PDCCH resources and enhancing system resource utilization.
[0322] In some embodiments of this application, the channel transmission method provided in some embodiments of this application may further include the following step 208.
[0323] Step 208: The terminal receives M PDCCH candidates according to the reference aggregation level.
[0324] Where M is pre-configured, network-configured, or determined by the terminal based on the number of blind detections. The above M PDCCH candidates are in one search space or in multiple search spaces, and the multiple search spaces may have the same or different numbers.
[0325] Optionally, in this embodiment, the terminal can merge M PDCCH candidates according to a reference aggregation level. Merging can be considered as merging after reception, which is implemented by the UE.
[0326] Optionally, in this embodiment of the application, within a search space, the terminal can merge the above M PDCCH candidates according to a reference aggregation level.
[0327] Optionally, in this embodiment, the search space numbers of the plurality of search spaces may be the same. In some embodiments of this application, step 208 may be implemented by at least one of steps 208a to 208e described below.
[0328] Step 208a: The terminal receives M PDCCH candidates based on the relationship between the CCE resources and PDCCH candidates in the reference aggregation level and network configuration.
[0329] The relationship between the resources of the aforementioned CCE and the PDCCH candidates is determined by network configuration or protocol predefinition.
[0330] Step 208b: The terminal performs blind detection based on the reference aggregation level, and receives the detected PDCCH candidate when the blind detection limit is reached.
[0331] Step 208c: The terminal receives M PDCCH candidates based on the reference aggregation level and the indexes of the M PDCCH candidates.
[0332] Step 208d: If the network configures the terminal to perform PDCCH repetition in at least one search space or the network configures blind detection corresponding to the number of PDCCH repetitions, the terminal receives M PDCCH candidates according to the reference aggregation level.
[0333] Step 208e: The terminal determines the location, resource, or number of the CCE based on the reference aggregation level, and receives M PDCCH candidates based on the determined location, resource, or number of the CCE.
[0334] It should be noted that the following three methods included in the above determination method can be used in combination:
[0335] Multiple SS links, where each SS contains a merge of different AL PDCCH candidates;
[0336] An SS consists of multiple MOs, and the PDCCH candidates (with the same AL) in different MOs are merged;
[0337] Merging multiple PDCCH candidates in a single SS.
[0338] In some embodiments of this application, since a terminal can merge M PDCCH candidates according to a reference aggregation level within a search space, it is not necessary to require the M PDCCH candidates to have the same aggregation level when merging PDCCH candidates. This allows for flexible use of PDCCH resources for terminals with limited bandwidth.
[0339] The channel transmission method provided by some embodiments of this application will be described exemplarily below with reference to the accompanying drawings.
[0340] For example, as shown in Figure 7, a reference AL is determined, and the user equipment (UE) determines the coded bis based on the reference AL and performs CC merging. The specific steps are as follows:
[0341] Step 1.
[0342] For network configuration reference, see AL_ref=2.
[0343] In network configuration SS1, AL_ss1 = 2, corresponding to PDCCH candidate number = 1; in configuration SS2, AL_ss2 = 4, corresponding to PDCCH candidate number = 1. In configuration SS1, searchspacelinkingid = m, and in SS2, searchspacelinkingid = m (the same value as in SS1, indicating linked).
[0344] Step 2.
[0345] The UE determines the circular buffer N for polar coding based on reference AL=2.
[0346] Step 3.
[0347] The UE listens to the PDCCH in SS1. The AL in SS1 is equal to the reference AL (ie, AL_ss1 = AL_ref). The UE detects the PDCCH according to the existing process.
[0348] The UE listens to the PDCCH in SS2, where AL>ref AL(ie, AL_ss2>AL_ref) in SS2.
[0349] The UE determines the CCE index of PDCCH candidate 2 based on AL=4 in SS2, which is CCE 0, CCE 1, CCE 2, CCE 3.
[0350] The UE determines the number of sub-PDCCH candidates / MOs in SS2 to be K = AL_ss2 / AL_ref = 2. Therefore, the resources for the first sub-PDCCH candidate are CCE 0 and CCE 1; the resources for the second sub-PDCCH candidate are CCE 2 and CCE 3. (That is, CCE resources are allocated sequentially to the PDCCH candidates.)
[0351] In this way, different search space sets can be linked, and the aggregation level (AL) in different search spaces can be different. This solves the problem of insufficient PDCCH resource coverage and achieves the benefit of flexible use of PDCCH resources.
[0352] For example, a reference SS is determined, and the UE determines the coded bis based on the configuration of the reference SS, and performs CC merging. The specific steps are as follows:
[0353] Step 1.
[0354] In the network configuration / predefined linked SS, the SS corresponding to the PDCCH candidate with the smallest AL among the linked PDCCH candidates is the reference SS, and the corresponding reference AL_ref is also specified.
[0355] In network configuration SS1, AL_ss1 = 2, corresponding to PDCCH candidate number = 1; in configuration SS2, AL_ss2 = 4, corresponding to PDCCH candidate number = 1. In configuration SS1, searchspacelinkingid = m, and in SS2, searchspacelinkingid = m (the same value as in SS1, indicating linked).
[0356] Therefore, SS1 is the reference SS, and the corresponding AL_ref is AL=2 configured within SS1.
[0357] Step 2.
[0358] The UE determines the circular buffer for polar coding based on reference AL=2.
[0359] Step 3.
[0360] The UE listens to the PDCCH in SS1. The AL in SS1 is equal to the reference AL (ie, AL_ss1 = AL_ref). The UE detects the PDCCH according to the existing process.
[0361] The UE listens to the PDCCH in SS2, where AL>ref AL(ie, AL_ss2>AL_ref) in SS2.
[0362] The UE determines the CCE index of PDCCH candidate 2 based on AL=4 in SS2, which is CCE 0, CCE 1, CCE 2, CCE 3.
[0363] The UE determines the number of sub-PDCCH candidates / MOs in SS 2 to be K = AL_ss2 / AL_ref = 2. Therefore, the resources for the first sub-PDCCH candidate are CCE 0 and CCE 1; the resources for the second sub-PDCCH candidate are CCE 2 and CCE 3. (That is, CCE resources are allocated sequentially to the PDCCH candidates.)
[0364] Thus, when linking different search space sets, the aggregation level (AL) within different search spaces can be different. According to the NR protocol, linkage is defined on the concept of search space. Therefore, SS is used to define the reference value.
[0365] For example, as shown in Figure 8, a reference SS is determined, and the UE determines the coded bis based on the configuration of the reference SS and performs IR merging. The specific steps are as follows:
[0366] Step 0.
[0367] Optionally, the UE reports soft merging of the IRs supported by the UE.
[0368] Step 1.
[0369] In network configuration SS1, AL_ss1 = 2, corresponding to PDCCH candidate number = 1; in configuration SS2, AL_ss2 = 4, corresponding to PDCCH candidate number = 1. In configuration SS1, searchspacelinkingid = m, and in SS2, searchspacelinkingid = m (the same value as in SS1, indicating linked).
[0370] If SS2 is configured as the reference SS in the network, or if the SS with the largest predefined SS ID is designated as the reference SS, then SS2 will be the reference SS.
[0371] If AL=4 is configured in SS 2, then refer to AL=4 (AL_ref=4).
[0372] Step 2.
[0373] The UE determines the circular buffer N for polar coding (e.g., 512 coded bits, the value of which is related to the DCI payload) based on the reference AL=4.
[0374] Step 3.
[0375] The UE listens to the PDCCH in SS1. The AL in SS1 is less than the reference AL (i.e., AL_ss1 = AL_ref). The UE determines the CCE index of PDCCH candidate 1 based on AL_SS1 = 2 and the existing hash function.
[0376] The UE performs rate matching based on AL_SS 1 = 2 and the aforementioned circular buffer N to determine the output coded bits E1 (e.g., 218 coded bits). The output coded bits start from the beginning of the circular buffer.
[0377] The UE listens to the PDCCH in SS2, where AL in SS2 is the reference AL (i.e., AL_ss2 = AL_ref).
[0378] The UE uses AL=4 in SS 2 to prepare PDCCH candidate resources according to the existing protocol, and outputs coded bits E2 (e.g., 436 coded bits).
[0379] Thus, the ALs within different SSs can be different, requiring the UE to support polar coding IR combining, which places higher demands on the UE's capabilities. In this case, the PDCCH encoding is not limited by the smaller aggregation level in the linked PDCCH candidate, allowing for a greater number / length of coded bits. While carrying more check information, it may also improve the energy efficiency of some coded bits, potentially resulting in better decoding performance.
[0380] For example, as shown in Figure 9, multiple SSs are linked to the same CORESET, and the starting position of the PDCCH candidate within an SS is related to the SS ID / the number of associated SSs. The specific steps are as follows:
[0381] Step 1.
[0382] In the network configuration / predefined multiple linked SSs (SS 1, SS 2, SS 3 configured with searchspacelinkingid=m), at least multiple SSs (SS 2, SS 3) are associated with CORESET p. SS 1 is associated with CORESET q.
[0383] Configure AL=2 and PDCCH candidate number=N in SS1, SS2, and SS3.
[0384] Step 2.
[0385] The UE determines the PDCCH candidate CCE index in SS2 as {CCE m, CCE m+1} based on the existing hash function.
[0386] The UE determines the CCE index of SS3 based on the CCE index of SS2.
[0387] The PDCCH candidate CCE index in SS 3 is {CCE m, CCE m+1} number + the number corresponding to AL = {CCE m+2, CCE m+3}.
[0388] Step 2A.
[0389] The UE determines the PDCCH candidate CCE index of SS2 and SS3 based on the number of SSs in CORESET p (K=2). SS2 is the 0th SS in CORESET p (i.e., k=0), and SS3 is the 1st SS in CORESET p (i.e., k=2).
[0390] The UE determines the PDCCH candidate CCE index occupied by SS2 or SS3 according to the following formula (5):
[0391] Thus, the ALs of linked PDCCH candidates are the same across multiple linked SSs. The reception of a PDCCH within a CORESET can include two PDCCH candidates. By defining the resources of the PDCCH candidates using the method described above, conflicts between the two PDCCH candidates can be avoided.
[0392] For example, multiple MOs are configured within a single SS. Multiple valid PDCCH candidates can be detected within an SS. These multiple PDCCH candidates share the same PDCCH payload, and their corresponding coded bits can be the same or different; this example uses the same coded bits. The specific steps are as follows:
[0393] Step 1.
[0394] Configure the network SS1 with searchspacelinkingid=m, configure the PDCCH candidate aggregation level to be monitored as AL_ss1=2, and the corresponding PDCCH candidate number=1.
[0395] Configure SS2's searchspacelinkingid=m, configure the time-domain resource location of MO 1, and the MO's offset. (This is equivalent to having two MOs in SS2). Configure the monitored PDCCH candidate aggregation level AL_ss2=4, and the corresponding PDCCH candidate number=1.
[0396] The aggregation level multiple between SS2 and SS1 in the network configuration is N. When the number of PDCCH candidates corresponding to AL1 in SS1 is the same as the number of PDCCH candidates corresponding to (AL1*N) in SS2, SS1 and SS2 can be configured to be associated.
[0397] Alternatively, AL 2 in network configuration SS1 is associated with AL 4 in SS2, and the associated ALs have the same number of PDCCH candidates.
[0398] The UE determines the resource CCE sets corresponding to the PDCCH candidate based on the AL (e.g., AL=4) configured in SS2. The sub-PDCCH candidate 1 corresponding to MO 1 corresponds to the first AL / 2 resources in the PDCCH candidate's CCE sets; the sub-PDCCH candidate 2 corresponding to MO 2 corresponds to the last AL / 2 resources in the PDCCH candidate's CCE sets. Alternatively, the network configures SS 2 with searchspacelinkingid=m, configures the temporal resource location of MO 1, and configures the temporal resource location of additional MO (e.g., MO 2). The monitored PDCCH candidate aggregation level is configured as AL_ss2=2, and the corresponding PDCCH candidate number=1.
[0399] Step 2.
[0400] The UE listens to PDCCH candidate 1 in SS1 according to the existing protocol;
[0401] According to the existing protocol, the UE listens to PDCCH candidate 2 in MO 1 within SS2 and listens to PDCCH candidate 3 in MO 2 within SS2.
[0402] For example, multiple PDCCH candidates within a single SS are merged. Multiple valid PDCCH candidates can be detected within an SS, and these candidates are then merged. The specific steps are as follows:
[0403] Step 1. Configure the network to associate Search space 1 with CORESET p. Configure the reference aggregation level = 1.
[0404] In the network configuration SS1, the selectable number of repetitions N = {2, 3, 4, 6} corresponds to the number of BDs {4, 4, 6, 2}. That is, when N = 2, PDCCH candidates from 4 blind detections are merged; when N = 3, PDCCH candidates from 4 blind detections are merged; when N = 4, the number of blind detections is 6; and when N = 6, the number of blind detections is 2 (which could be for joint decoding).
[0405] Step 2. The UE determines whether to merge PDCCH candidates within SS1 based on the network configuration information.
[0406] The UE determines the position of CCE as CCE{0,8,16,24} based on the hash function and the reference aggregation level.
[0407] Optionally, the PDCCH candidate for the 6 BDs corresponding to 4 repetitions is the following resources: {0}, {8}, {16}, {24}, {0, 8}, 0, 16}, {0, 24}, {8, 16}, {8, 24}, {16, 24}, {0, 8, 16}, {0, 8, 24}, {8, 16, 24}, {0, 8, 16, 24}.
[0408] That is, it corresponds to the set of taking 1 resource, 2 resources, 3 resources, and 4 resources from CCE{0,8,16,24}.
[0409] Alternatively, the UE determines the position of CCE as CCE{0,1,2,3} based on the hash function and (reference aggregation level * number of repetitions) = 1 * 4 = 4. Similarly, the PDCCH candidate for the 6 BDs corresponding to 4 repetitions is the following resources: a set of 1 resource, 2 resources, 3 resources, and 4 resources taken from CCE{0,1,2,3}.
[0410] Step 2A. The UE determines whether to merge PDCCH candidates within SS1 based on the network configuration information.
[0411] The UE determines the position of CCE as CCE{0,8,16,24} based on the hash function and the reference aggregation level.
[0412] Pre-configure or configure the association between CCE and PDCCH candidate. Configure CCE 0 to be associated with PDCCH candidate indices 0-5; CCE 8 to PDCCH candidate 0-2; CCE 16 to PDCCH candidate 1; CCE 24 to PDCCH candidate 4.
[0413] Step 3. The UE determines the PDCCH candidate resources according to step 2 / 2A and performs detection and merging until the number of BDs is reached.
[0414] It should be noted that a smaller ref AL configuration results in more flexible resource utilization (approaching support for ALs of arbitrary length), while a larger configuration results in greater coding gain. Thus, by configuring ref AL=1 and repeating it 3 times (or ref AL=3 and repeating it once), BD 4, it is possible to approximately achieve the effect of supporting AL-3.
[0415] By merging different candidates within the SearchSpace (instead of different MOs) and using repetition to approximate different ALs, the effect of approximately supporting different ALs can be achieved.
[0416] For example, the SS0 PDCCH candidate in slot n is associated with the SS0 PDCCH candidate in slot m, and the PDCCH candidate carries a DCI format with CRC scrambled by SI-RNTI. Slot m and slot n are different slots, m>n. (A slot can also be a span / slot group, and SS0 can also be another common search space). Slot n and slot m can be considered as different MOs.
[0417] Option 1. If the UE is provided / configured with SI-RNTI scrambled PDCCH repetition in SS0, the UE does not repetition / combine the C-RNTI scrambled PDCCH in the SS0 occurrence of the second slot m, or the C-RNTI scrambled PDCCH candidate is not linked.
[0418] For example, if the UE provides a SI-RNTI scrambled PDCCH candidate in SS0 of slot n and a SI-RNTI scrambled PDCCH candidate in SS0 of slot m, then the UE needs to listen to, receive, or merge the PDCCH candidates in slot n and slot m.
[0419] For example: If the UE provides a SI-RNTI scrambled PDCCH candidate in SS0 of slot n and a SI-RNTI scrambled PDCCH candidate in SS0 of slot m, along with a C-RNTI, an MCS-C-RNTI, or a CS-RNTI, then the UE will listen to / receive the C-RNTI / MCS-C-RNTI / CS-RNTI scrambled PDCCH candidate separately / independently in slot n and slot m. Alternatively, the UE will not listen to / receive the C-RNTI / MCS-C-RNTI / CS-RNTI scrambled PDCCH candidate in slot n and slot m.
[0420] For example: If the UE provides a SI-RNTI scrambling PDCCH candidate in SS0 of slot n and a SI-RNTI scrambling PDCCH candidate in SS0 of slot m, the UE does not expect to configure C-RNTI, or MCS-C-RNTI, or CS-RNTI scrambling DCI in SS0 of slot n and / or slot m. Alternatively, the UE does not expect to provide C-RNTI, or MCS-C-RNTI, or CS-RNTI in SS0 of slot n and / or slot m.
[0421] Option 2. If the UE is provided with / configured with SI-RNTI scrambled PDCCH repetition disabled in SS0, or if the SI-RNTI scrambled PDCCH in slot n and slot m are not linked, then the UE listens for C-RNTI scrambled PDCCH in SS0.
[0422] If the UE is provided with / configured with SI-RNTI scrambling PDCCH repetition within SS0, the number of detected SI-RNTI scrambling PDCCH candidates is determined based on at least one of the following:
[0423] 1. The UE listens to the PDCCH in slot n / slot m / later slot, and the UE calculates two PDCCH candidates. Alternatively, within the slot m / later slot, the PDCCH scrambled by SI-RNTI occupies twice or two PDCCH candidates.
[0424] 2. Network configuration: Number of PDCCH candidates / Blind decoded in slot n / slot m / later slot. Network configuration: Number of independently detected PDCCH candidates, or number of PDCCH candidates detected by PDCCH repetition, or the ratio of independently detected PDCCH candidates to those detected by PDCCH repetition.
[0425] Optionally, the independently detected PDCCH candidate can be applied to the number of PDCCH candidates scrambled by SI-RNTI, or it can be applied to the number of PDCCH candidates scrambled by SI-RNTI or C-RNTI. In this case, for independent detection (not based on joint reception of multiple ocassions), the legacy BD calculation method is used, and the BD calculation does not consider the influence of different RNTIs.
[0426] 3. Configure virtual SS0 within slot n / slot m, and configure the number of PDCCH candidates in virtual SS0. The number of PDCCH candidates in virtual SS0 is used for joint detection of SI-RNTI scrambled DCI in slot ns and slot m.
[0427] Optionally, if the UE is provided / configured with a PDCCH repetition scrambled by SI-RNTI within SS0, and is configured / provided with C-RNTI, or CS-RNTI, or MCS-C-RNTI, then the number of detected PDCCH candidates scrambled by C-RNTI, or CS-RNTI, or MCS-C-RNTI is determined according to at least one of the following:
[0428] 1. The number of independently detected PDCCH candidates in the network configuration;
[0429] 2. Determine the number of PDCCH candidates scrambled by independently detected C-RNTI, CS-RNTI, or MCS-C-RNTI in the network configuration.
[0430] 3. The number of PDCCH candidates that the UE can detect, or the total number of PDCCH candidates configured by the network minus the number of PDCCH candidates jointly detected by the network.
[0431] The number of detections for the C-RNTI scrambled PDCCH candidate is the number of BDs on slot m / slot n.
[0432] The channel transmission method provided by the embodiments of this application can realize flexible PDCCH reception, and can further optionally implement CC merging / IR merging, or perform independent detection. At the same time, it can flexibly use PDCCH resources (for example, when receiving a PDCCH, the aggregation level AL{1,2,4,816} can be arbitrarily combined with AL{1,2,4,816}). While satisfying the PDCCH performance, it can improve the efficiency of system resources.
[0433] This application provides a channel transmission method. FIG10 shows a flowchart of a channel transmission method provided by some embodiments of this application. As shown in FIG10, a channel transmission method provided by some embodiments of this application may include the following step 301.
[0434] Step 301: The network-side device sends a PDCCH to the terminal.
[0435] The PDCCH listening or receiving mentioned above includes M PDCCH candidates or L PDCCH listening opportunities. The M PDCCH candidates may have the same or different aggregation levels, or the M PDCCH candidates in the L PDCCH listening opportunities may have the same or different aggregation levels. M and L are both integers greater than or equal to 2.
[0436] In some embodiments of this application, the M PDCCH candidates or the L PDCCH listening opportunities may be associated; or, the search space set corresponding to the M PDCCH candidates or the search space set corresponding to the L PDCCH listening opportunities may be associated; or, the control resource set of the search space set corresponding to the M PDCCH candidates or the control resource set of the search space set corresponding to the L PDCCH listening opportunities may be associated.
[0437] In some embodiments of this application, the resources of any PDCCH candidate among the M PDCCH candidates can be determined based on the aggregation level configured in the search space associated with the PDCCH.
[0438] In some embodiments of this application, the resources of any of the above-mentioned PDCCH candidates may include the resources of the CCEs of that PDCCH candidate. The resources of the CCEs of that PDCCH candidate are determined according to at least one of the following: the numbering order of the CCEs in the search space associated with the PDCCH, the time-domain numbering order, and the interleaving style; wherein, the numbering of the CCEs in the search space associated with the PDCCH is determined according to the aggregation level configured in the search space associated with the PDCCH.
[0439] In some embodiments of this application, the at least one search space set associated with the PDCCH may include the L listening opportunities.
[0440] The aforementioned L listening opportunities are determined based on at least one of the following:
[0441] The time-domain resource locations of L1 listening opportunities included in at least one of the search space sets mentioned above, or the time-domain resource locations of L1 listening opportunities configured or predefined by the network, or the time-domain resource locations of L1 time-domain resources configured by the network; wherein, L1 is less than or equal to L;
[0442] The frequency domain resource locations of the L2 listening opportunities included in at least one of the search space sets mentioned above, or the frequency domain resource locations of the L2 listening opportunities configured or predefined by the network, or the L2 frequency domain resource locations configured by the network; wherein, L2 is less than or equal to L;
[0443] The offset of the listening opportunity in one of the search space sets defined by the network configuration or protocol;
[0444] The frequency domain offset of the listening opportunity in one of the search space sets defined by the network configuration or protocol.
[0445] In some embodiments of this application, the association between the first search space and the second search space corresponding to the above-mentioned PDCCH can be determined according to at least one of the following:
[0446] The third PDCCH candidate in the first search space is associated with the fourth PDCCH candidate in the second search space;
[0447] The network configuration associates the third PDCCH candidate in the first search space with the fourth PDCCH candidate in the second search space;
[0448] The aggregation level multiple between the first and second search spaces in the network configuration;
[0449] The network configuration or protocol predefines the candidate offset value between the third PDCCH candidate in the first search space and the fourth PDCCH candidate in the second search space;
[0450] Wherein, in the case where at least one search space set includes at least two search space sets, the at least two search space sets may have the same or different numbers.
[0451] In some embodiments of this application, the third PDCCH candidate and the fourth PDCCH candidate are associated when the fourth condition is met.
[0452] The fourth condition includes at least one of the following:
[0453] The aggregation levels configured in the first search space and the aggregation levels in the second search space are integer multiples of each other;
[0454] The third PDCCH candidate and the fourth PDCCH have the same number;
[0455] The number of PDCCH candidates is the same for the associated aggregation level configurations.
[0456] In some embodiments of the channel transmission method provided in this application, since the network-side device can send PDCCH to the terminal, and the listening or receiving of the PDCCH includes M PDCCH candidates or L PDCCH listening opportunities, the aggregation levels of the M PDCCH candidates are the same or different, or the aggregation levels of the M PDCCH candidates in the L PDCCH listening opportunities are the same or different, it is not necessary to require the aggregation levels of the M PDCCH candidates to be exactly the same when merging PDCCH candidates. Thus, for terminals with limited bandwidth resources, PDCCH resources can be used flexibly, and for terminals with limited bandwidth resources, system resources can be fully utilized when resources are insufficient.
[0457] In some embodiments of this application, the channel transmission method provided in some embodiments of this application may further include the following step 302.
[0458] Step 302: The network-side device sends the first information to the terminal.
[0459] The first information is used to determine whether the PDCCH is being monitored or received, and the first information includes at least one of the following:
[0460] The merging method of PDCCH;
[0461] Refer to the aggregation level;
[0462] Refer to the configuration information of the search space collection;
[0463] Search space configuration information;
[0464] Control the configuration information of the resource set;
[0465] Configuration information for monitoring opportunities;
[0466] The type of temporary identifier for wireless networks.
[0467] In some embodiments of this application, the merging method of the PDCCH described above may include at least one of a first merging method and a second merging method.
[0468] The first and second merging methods differ.
[0469] In some embodiments of this application, the above-mentioned reference aggregation level can be used to determine at least one of the following:
[0470] The output sequence e of the above PDCCH k Or the encoded bit sequence e sent by the aforementioned PDCCH k Or the encoded bit sequence e received by the aforementioned PDCCH k ;
[0471] The length E of the output sequence of the PDCCH, or the length E of the encoded bits transmitted by the PDCCH, or the length E of the encoded bits received by the PDCCH;
[0472] The encoded bit sequence e sent by the aforementioned PDCCH k Or the sequence y of the ring buffer encoded by the above PDCCH n Or the sequence y of the ring buffer decoded by the above PDCCH n ;
[0473] The length E of the encoded bits transmitted by the PDCCH, or the length N of the ring buffer encoded by the PDCCH, or the sequence length N of the ring buffer decoded by the PDCCH.
[0474] In some embodiments of this application, the aggregation levels of the above-mentioned M PDCCH candidates may include any of the following:
[0475] The aggregation level corresponding to the M PDCCH candidates received or detected by the terminal;
[0476] At least one aggregation level configured in at least one search space of the above M PDCCH candidate associations.
[0477] In some embodiments of this application, the aforementioned reference search space set may include any of the following:
[0478] The search space set of the PDCCH candidates with the smallest aggregation level corresponding to the above M PDCCH candidates;
[0479] The set of search spaces with the smallest aggregation level configured in the search space set corresponding to the above M PDCCH candidates;
[0480] The set of search spaces corresponding to the minimum aggregation level configured in the search space set;
[0481] The set of search spaces corresponding to the minimum aggregation level of the above M PDCCH candidates, provided that the first condition is met, wherein the bit rate of the PDCCH determined according to the aggregation level is higher than a preset value.
[0482] The set of search spaces corresponding to the minimum search space set number;
[0483] The search space set corresponding to the largest search space set number;
[0484] The search space set corresponding to the network-configured or predefined search space set number;
[0485] The search space set associated with the control resource set corresponding to the search space set of the above M PDCCH candidates, which is the control resource set with the smallest control resource set number or the largest control resource set number.
[0486] The set of search spaces configured within the control resource set corresponding to the control resource set number.
[0487] In some embodiments of this application, the above-mentioned reference aggregation level or one or more aggregation levels of the above-mentioned M PDCCH candidates can satisfy at least one of the following:
[0488] Values configured for the network or predefined values for the protocol;
[0489] The aggregation level is determined based on the above M PDCCH candidates;
[0490] Determined based on one or more search spaces associated with the above M PDCCH candidates;
[0491] Determined based on the reference search space;
[0492] Determined based on the search space set of the links;
[0493] Determined based on the set of control resources linked.
[0494] In some embodiments of this application, the channel transmission method provided in some embodiments of this application may further include the following step 303.
[0495] Step 203: The network-side device receives the capability information of the M PDCCH candidates reported by the terminal.
[0496] The aforementioned capability information includes at least one of the following:
[0497] The soft merging methods supported by the terminal;
[0498] The terminal supports the ability to receive PDCCHs of different aggregation levels, either repeatedly or at different aggregation levels.
[0499] The number of PDCCH candidates that the terminal supports receiving;
[0500] The terminal supports the ability to receive PDCCHs from different resources or at different aggregation levels;
[0501] The terminal supports the ability to repeat PDCCH for different resources or different aggregation levels.
[0502] In some embodiments of this application, the channel transmission method provided in some embodiments of this application may further include the following step 304.
[0503] Step 304: The network-side device configures at least three search spaces for the terminal.
[0504] Among them, the above-mentioned at least three search spaces are used for PDCCH monitoring or reception, and the aggregation level of PDCCH candidates in different search spaces is the same.
[0505] In some embodiments of this application, the resources of the PDCCH candidates in the above-mentioned at least three search spaces can be determined according to the numbering of the at least three search spaces.
[0506] In some embodiments of this application, when the above-mentioned at least three search spaces are associated with the same set of control resources, the PDCCH candidate resources in the a-th search space among the at least three search spaces can be determined according to at least one of the following:
[0507] Search space number a;
[0508] Search space number a-1;
[0509] The resource number of the PDCCH candidate in the (a-1)th search space;
[0510] The resource number of the PDCCH candidate in the A1th search space, where A1 is a configured or defined parameter, or determined according to a configured or predefined parameter, or the smallest search space number among the search space numbers of the at least three search spaces, or the largest search space number among the search space numbers of the at least three search spaces, or the smallest search space number in the associated control resource set, or the largest search space number in the associated control resource set.
[0511] The number of search spaces configured in the control resource set associated with the a-th search space;
[0512] Where a is a positive integer.
[0513] In some embodiments of this application, the channel transmission method provided in some embodiments of this application may further include the following step 305.
[0514] Step 305: When the terminal supports soft merging, the network-side device is configured to receive PDCCH candidates with multiple different aggregation levels.
[0515] In some embodiments of this application, when the terminal supports CC merging, the network-side device configures the terminal to repeatedly configure the terminal to perform decoding and PDCCH buffer merging based on the smaller aggregation level in the reference aggregation level / SS. The network-side device performs encoding based on the smaller aggregation level in the reference aggregation level / SS.
[0516] In some embodiments of this application, when the terminal supports IR merging, the network-side device configures the terminal to repeatedly configure itself to perform decoding and PDCCH buffer merging based on the larger aggregation level in the reference aggregation level / SS. The network-side device performs encoding based on the larger aggregation level in the reference aggregation level / SS.
[0517] For further descriptions of the channel transmission methods provided in some embodiments of this application, please refer to the relevant descriptions in the above-described terminal-side method embodiments. To avoid repetition, they will not be repeated here.
[0518] The above-described method embodiments, or various possible implementations of the method embodiments, can be executed individually, or, provided there are no contradictions, they can be combined with each other. The specific implementation can be determined according to actual usage requirements, and this application embodiment does not impose any restrictions on this.
[0519] The channel transmission method provided in this application can be executed by a channel transmission device. This application uses the example of a channel transmission device executing the channel transmission method to illustrate the channel transmission device provided in this application.
[0520] This application provides a channel transmission device. As an example, the channel transmission device can be a communication device or a component within a communication device, such as a chip. The communication device can be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal can be, but is not limited to, the type of terminal 11 listed above, and the network-side device can be, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.
[0521] The channel transmission device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, etc., such as central processing units (CPUs), microprocessors, digital signal processors (DSPs), artificial intelligence (AI) processors, graphics processing units (GPUs), application-specific integrated circuits (ASICs), network processors (NPs), field-programmable gate arrays (FPGAs), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceivers, pins, circuits, buses, radio frequency units, etc.
[0522] Specifically, referring to Figure 11, when the channel transmission device is a terminal or a component in a terminal, the channel transmission device 10 includes: a first processing module 11.
[0523] The first processing module 11 can be used to determine whether to listen to or receive a PDCCH based on first information. The listening to or receiving of a PDCCH includes M PDCCH candidates or L PDCCH listening opportunities. The M PDCCH candidates may have the same or different aggregation levels, or the M PDCCH candidates among the L PDCCH listening opportunities may have the same or different aggregation levels, where M and L are both integers greater than or equal to 2. The first information includes at least one of the following: the PDCCH merging method; the reference aggregation level; the configuration information of the reference search space set; the configuration information of the search space; the configuration information of the control resource set; the configuration information of the listening opportunity; and the type of the wireless network temporary identifier.
[0524] In some embodiments of this application, the M PDCCH candidates or the L PDCCH listening opportunities may be associated; or, the search space set corresponding to the M PDCCH candidates or the search space set corresponding to the L PDCCH listening opportunities may be associated; or, the control resource set of the search space set corresponding to the M PDCCH candidates or the control resource set of the search space set corresponding to the L PDCCH listening opportunities may be associated.
[0525] In some embodiments of this application, the merging method of the PDCCH may include at least one of a first merging method and a second merging method; wherein the first merging method and the second merging method are different.
[0526] In some embodiments of this application, the aforementioned reference aggregation level can be used to determine at least one of the following: the output sequence e of the aforementioned PDCCH. k Or the encoded bit sequence e sent by the PDCCH k Or the encoded bit sequence e received by the PDCCH k The output sequence length E of the aforementioned PDCCH, or the length E of the encoded bits transmitted by the PDCCH, or the length E of the encoded bits received by the PDCCH; the sequence y of the ring buffer of the aforementioned PDCCH. n , or the sequence y of the PDCCH-encoded ring buffer n , or the sequence y of the ring buffer decoded by the PDCCH n The sequence length N of the PDCCH ring buffer, or the sequence length N of the PDCCH encoded ring buffer, or the sequence length N of the PDCCH decoded ring buffer.
[0527] In some embodiments of this application, the aggregation level of the M PDCCH candidates may include any one of the following: the aggregation level corresponding to the M PDCCH candidates received or detected by the terminal; or at least one aggregation level configured in at least one search space associated with the M PDCCH candidates.
[0528] In some embodiments of this application, the aforementioned reference search space set may include any of the following: the search space set of the PDCCH candidate with the smallest aggregation level among the M PDCCH candidates; the search space set with the smallest aggregation level configured in the search space set corresponding to the M PDCCH candidates; the search space set corresponding to the smallest aggregation level configured in the search space set; the search space set corresponding to the smallest aggregation level among the M PDCCH candidates, provided that the aggregation levels of the M PDCCH candidates satisfy a first condition, wherein the first condition includes the PDCCH code rate determined according to the aggregation level being higher than a preset value; the search space set corresponding to the smallest search space set number; the search space set corresponding to the largest search space set number; the search space set corresponding to the network-configured or predefined search space set number; the search space set associated with the control resource set corresponding to the smallest control resource set number or the largest control resource set number in the control resource set corresponding to the M PDCCH candidates; and the search space set configured within the control resource set corresponding to the control resource set number.
[0529] In some embodiments of this application, the reference aggregation level or one or more aggregation levels of the M PDCCH candidates satisfy at least one of the following: a value configured for the network or a value predefined by the protocol; determined based on the aggregation level of the M PDCCH candidates; determined based on one or more search spaces associated with the M PDCCH candidates; determined based on the reference search space; determined based on the set of search spaces for links; determined based on the set of control resources for links.
[0530] In some embodiments of this application, the first information includes the aforementioned reference aggregation level. Exemplarily, the first processing module 11 can also be used to determine second information based on the aggregation level of the m-th PDCCH candidate among the M PDCCH candidates and the reference aggregation level; and to perform PDCCH monitoring or reception according to the second information. The second information includes at least one of the following: the number of monitoring opportunities among the M PDCCH candidates; the number of blind checks in the search space set associated with the PDCCH; and the number of blind checks corresponding to the aggregation level of the m-th PDCCH candidate.
[0531] In some embodiments of this application, the first processing module 11 can be specifically used to determine second information based on the aggregation level of the m-th PDCCH candidate and the aforementioned reference aggregation level, provided that a second condition is met. The second condition includes any one of the following: the aggregation level of the M PDCCH candidates is greater than or equal to the reference aggregation level; or the aggregation level of the second PDCCH candidate in the first search space associated with the PDCCH is greater than or equal to the reference aggregation level.
[0532] In some embodiments of this application, the resources of any PDCCH candidate among the M PDCCH candidates can be determined based on the aggregation level configured in the search space associated with the PDCCH.
[0533] In some embodiments of this application, the resources of any PDCCH candidate include the resources of the CCEs of that PDCCH candidate. The resources of the CCEs of that PDCCH candidate are determined based on at least one of the following: the numbering order of the CCEs in the search space associated with the PDCCH, the time-domain numbering order, and the interleaving style; wherein, the numbering of the CCEs in the search space associated with the PDCCH is determined based on the aggregation level configured in the search space associated with the PDCCH.
[0534] In some embodiments of this application, the first information includes the aforementioned reference aggregation level. Exemplarily, the first processing module 11 can also be used to determine third information based on the reference aggregation level; and to perform the aforementioned PDCCH monitoring or reception according to the third information. The third information includes at least one of the following: the output sequence y of the ring buffer. n The length N of the ring buffer, and the encoded bit sequence e k , where E is the length of the encoded bit sequence.
[0535] In some embodiments of this application, the output sequence of at least one of the first PDCCH candidate and the second PDCCH candidate in the above-mentioned PDCCH can be determined according to at least one of the following: the output sequence y of the ring buffer n The encoded bit sequence e k The output sequence y of the ring buffer n The starting position of the encoded bit sequence e k The starting position; the predefined starting position; the configured starting position; the output sequence y of the ring buffer. n Or the encoded bit sequence e k The Eth sequence bit; the output sequence y of the ring buffer n Or the encoded bit sequence e k The E2nd sequence bit; the output sequence y of the ring buffer nOr the encoded bit sequence e k The E1st sequence bit; where E1 is the coded bit length of the first PDCCH candidate and E2 is the coded bit length of the second PDCCH candidate.
[0536] In some embodiments of this application, the first sub-PDCCH candidate of the second PDCCH candidate, or the first sub-PDCCH candidate corresponding to the first listening opportunity among the L listening opportunities mentioned above, can be determined based on at least one of the following: the output sequence y of the ring buffer. n The encoded bit sequence e k The output sequence y of the ring buffer n The starting position of the encoded bit sequence e k The starting position; the output sequence y of the ring buffer n Or the encoded bit sequence e k The Eth sequence bit; the output sequence y of the ring buffer n Or the encoded bit sequence e k The E1st sequence bit.
[0537] In some embodiments of this application, the second sub-PDCCH candidate of the second PDCCH candidate, or the second sub-PDCCH candidate corresponding to the second listening opportunity among the L listening opportunities mentioned above, can be determined based on at least one of the following: the output sequence y of the ring buffer. n The encoded bit sequence e k ; Encoded bit sequence The output sequence y of the ring buffer n The starting position of the encoded bit sequence e k The starting position; the encoded bit sequence The starting position; the output sequence y of the ring buffer n Or the encoded bit sequence e k The Eth sequence bit; the output sequence y of the ring buffer n Or the encoded bit sequence e k The E1st sequence bit; the output sequence y of the ring buffer n The encoded bit sequence e k E2 - One sequence of bits. Wherein, the encoded bit sequence... The output sequence, encoded sequence, or decoded sequence of the first PDCCH candidate.
[0538] In some embodiments of this application, the sequence of at least one of the first PDCCH candidate and the second PDCCH candidate, or the first sub-PDCCH of the second PDCCH candidate, or the second sub-PDCCH of the second PDCCH candidate, can be determined based on at least one of the following: the payload of downlink control information; the payload size of downlink control information; the sequence encoding bits of the aforementioned reference aggregation level; the sequence encoding bits of the second PDCCH candidate; the sequence encoding bits of the first PDCCH candidate; the sequence encoding bits of the first sub-PDCCH of the second PDCCH candidate; and the sequence encoding bits of the second sub-PDCCH of the second PDCCH candidate.
[0539] In some embodiments of this application, the first processing module 11 can be specifically used to determine third information based on the aforementioned reference aggregation level when a third condition is met. The third condition includes any one of the following: the aggregation level of the second PDCCH candidate in the aforementioned PDCCH is less than the reference aggregation level; the aggregation level of the aforementioned M PDCCH candidates is greater than or equal to the reference aggregation level of the aforementioned PDCCH; the aggregation level of the second PDCCH candidate in the first search space associated with the aforementioned PDCCH is less than the reference aggregation level.
[0540] In some embodiments of this application, the at least one search space set associated with the PDCCH includes the aforementioned L listening opportunities. The L listening opportunities are determined based on at least one of the following: the time-domain resource positions of L1 listening opportunities included in the at least one search space set, or the time-domain resource positions of L1 listening opportunities configured or predefined by the network, or the time-domain resource positions of L1 listening opportunities configured by the network; wherein L1 is less than or equal to L; the frequency-domain resource positions of L2 listening opportunities included in the at least one search space set, or the frequency-domain resource positions of L2 listening opportunities configured or predefined by the network, or the frequency-domain resource positions of L2 listening opportunities configured by the network; wherein L2 is less than or equal to L; the offset value of the listening opportunities in the search space set configured by the network or predefined by the protocol; the frequency-domain offset value of the listening opportunities in the search space set configured by the network or predefined by the protocol; wherein, when the at least one search space set includes at least two search space sets, the at least two search space sets have the same or different numbers.
[0541] In some embodiments of this application, the channel transmission device 10 may further include: a first transmission module. The first transmission module can be used to report capability information of the aforementioned M PDCCH candidates; wherein the capability information includes at least one of the following: the soft combining method supported by the terminal; the terminal's ability to support PDCCH repetition at different aggregation levels or PDCCH reception at different aggregation levels; the number of PDCCH candidates that the terminal can receive; the terminal's ability to support PDCCH reception at different resources or different aggregation levels; and the terminal's ability to support PDCCH repetition at different resources or different aggregation levels.
[0542] In some embodiments of this application, the association relationship between the first search space and the second search space corresponding to the PDCCH can be determined based on at least one of the following: the association between the third PDCCH candidate in the first search space and the fourth PDCCH candidate in the second search space; the association between the third PDCCH candidate in the first search space and the fourth PDCCH candidate in the second search space in the network configuration; the association aggregation level multiple between the first search space and the second search space in the network configuration; and the candidate offset value between the third PDCCH candidate in the first search space and the fourth PDCCH candidate in the second search space as predefined by the network configuration or protocol.
[0543] In some embodiments of this application, the third PDCCH candidate and the fourth PDCCH candidate are associated under a fourth condition; wherein the fourth condition includes at least one of the following: the aggregation level configured in the first search space is an integer multiple of the aggregation level in the second search space; the third PDCCH candidate and the fourth PDCCH candidate have the same number; and the number of PDCCH candidates configured in the associated aggregation level is the same.
[0544] In some embodiments of this application, the first processing module 11 can also be used to listen to or receive PDCCH based on at least three search spaces configured by the network; wherein the aggregation level of PDCCH candidates in different search spaces in the at least three search spaces is the same.
[0545] In some embodiments of this application, the resources of the PDCCH candidates in the above-mentioned at least three search spaces can be determined according to the numbering of the at least three search spaces.
[0546] In some embodiments of this application, when at least three search spaces are associated with the same set of control resources, the PDCCH candidate resource in the a-th search space among the at least three search spaces can be determined according to at least one of the following: search space number a; search space number a-1; resource number of the PDCCH candidate in the (a-1)-th search space; resource number of the PDCCH candidate in the A1-th search space, where A1 is a configured or defined parameter, or determined according to a configured or predefined parameter, or is the smallest search space number among the search space numbers of the at least three search spaces, or is the largest search space number among the search space numbers of the at least three search spaces, or is the smallest search space number among the associated control resource sets, or is the largest search space number among the associated control resource sets; and the number of search spaces configured in the control resource set associated with the a-th search space. Where a is a positive integer.
[0547] In some embodiments of this application, the first processing module 11 can also be used to merge the above M PDCCH candidates according to the above reference aggregation level; wherein M is pre-configured, network-configured, or determined by the terminal according to the number of blind detections, and the M PDCCH candidates are in one search space or in multiple search spaces, and the multiple search spaces have the same or different numbers.
[0548] In some embodiments of this application, the first processing module 11 may be specifically used to: receive the M PDCCH candidates according to the above reference aggregation level and the relationship between the CCE resources and PDCCH candidates configured by the network, wherein the relationship between the CCE resources and PDCCH candidates is predefined by the network configuration or protocol; and / or, perform blind detection according to the above reference aggregation level, and receive the detected PDCCH candidates when the blind detection limit is reached; and / or, receive the M PDCCH candidates according to the above reference aggregation level and the index of the above M PDCCH candidates; and / or, when the network configuration terminal performs PDCCH repetition in at least one search space or the network is configured to perform blind detection corresponding to the number of PDCCH repetitions, receive the above M PDCCH candidates according to the above reference aggregation level; and / or, determine the location, resources or number of the CCE according to the above reference aggregation level, and receive the above M PDCCH candidates according to the determined location, resources or number of the CCE.
[0549] In some embodiments of this application, the first information may be reported by the terminal or configured by the network.
[0550] In the channel transmission apparatus provided in this application embodiment, since the channel transmission apparatus can determine the monitoring or reception of PDCCH based on the first information, and the monitoring or reception of PDCCH includes M PDCCH candidates or L PDCCH monitoring opportunities, the aggregation levels of the M PDCCH candidates are the same or different, or the aggregation levels of the M PDCCH candidates in the L PDCCH monitoring opportunities are the same or different, when merging PDCCH candidates, it is not necessary to require that the aggregation levels of the M PDCCH candidates are exactly the same. Thus, for terminals with limited bandwidth resources, PDCCH resources can be used flexibly, and for terminals with limited bandwidth resources, system resources can be fully utilized when resources are insufficient.
[0551] The channel transmission device provided in this application embodiment can implement all the processes implemented in the above terminal-side method embodiment and achieve the same technical effect. To avoid repetition, it will not be described again here.
[0552] Referring to Figure 12, when the channel transmission device is a network-side device or a component of a network-side device, the channel transmission device 20 includes: a second transmission module 21.
[0553] The second sending module 21 can be used to send PDCCH to the terminal. The listening or receiving of the PDCCH includes M PDCCH candidates or L PDCCH listening opportunities. The M PDCCH candidates have the same or different aggregation levels, or the M PDCCH candidates in the L PDCCH listening opportunities have the same or different aggregation levels. M and L are both integers greater than or equal to 2.
[0554] In some embodiments of this application, the M PDCCH candidates or the L PDCCH listening opportunities may be associated; or, the search space set corresponding to the M PDCCH candidates or the search space set corresponding to the L PDCCH listening opportunities may be associated; or, the control resource set of the search space set corresponding to the M PDCCH candidates or the control resource set of the search space set corresponding to the L PDCCH listening opportunities may be associated.
[0555] In some embodiments of this application, the second sending module 21 can also be used to send first information to the terminal. The first information is used to determine whether the PDCCH is being monitored or received, and includes at least one of the following: the PDCCH merging method; the reference aggregation level; the configuration information of the reference search space set; the configuration information of the search space; the configuration information of the control resource set; the configuration information of the monitoring opportunity; and the type of the wireless network temporary identifier.
[0556] In some embodiments of this application, the merging method of the PDCCH may include at least one of a first merging method and a second merging method; wherein the first merging method and the second merging method are different.
[0557] In some embodiments of this application, the aforementioned reference aggregation level can be used to determine at least one of the following: the output sequence e of the PDCCH. k Or the encoded bit sequence e sent by the PDCCH k Or the encoded bit sequence e received by the PDCCH k The output sequence length E of the PDCCH, or the length E of the encoded bits transmitted by the PDCCH, or the length E of the encoded bits received by the PDCCH; the sequence y of the PDCCH's ring buffer. n , or the sequence y of the PDCCH-encoded ring buffer n , or the sequence y of the ring buffer decoded by the PDCCH n The sequence length N of the PDCCH ring buffer, or the sequence length N of the PDCCH encoded ring buffer, or the sequence length N of the PDCCH decoded ring buffer.
[0558] In some embodiments of this application, the aggregation level of the M PDCCH candidates may include any one of the following: the aggregation level corresponding to the M PDCCH candidates received or detected by the terminal; or at least one aggregation level configured in at least one search space associated with the M PDCCH candidates.
[0559] In some embodiments of this application, the aforementioned reference search space set may include any of the following: the search space set of the PDCCH candidate with the smallest aggregation level among the M PDCCH candidates; the search space set with the smallest aggregation level configured in the search space set corresponding to the M PDCCH candidates; the search space set corresponding to the smallest aggregation level configured in the search space set; the search space set corresponding to the smallest aggregation level among the M PDCCH candidates, provided that the aggregation levels of the M PDCCH candidates satisfy a first condition, wherein the first condition includes the PDCCH code rate determined according to the aggregation level being higher than a preset value; the search space set corresponding to the smallest search space set number; the search space set corresponding to the largest search space set number; the search space set corresponding to the network-configured or predefined search space set number; the search space set associated with the control resource set corresponding to the smallest control resource set number or the largest control resource set number in the control resource set corresponding to the M PDCCH candidates; and the search space set configured within the control resource set corresponding to the control resource set number.
[0560] In some embodiments of this application, the reference aggregation level or one or more aggregation levels of the M PDCCH candidates satisfy at least one of the following: a value configured for the network or a value predefined by the protocol; determined based on the aggregation level of the M PDCCH candidates; determined based on one or more search spaces associated with the M PDCCH candidates; determined based on the reference search space; determined based on the set of search spaces for links; determined based on the set of control resources for links.
[0561] In some embodiments of this application, the resources of any PDCCH candidate among the M PDCCH candidates can be determined based on the aggregation level configured in the search space associated with the PDCCH.
[0562] In some embodiments of this application, the resources of any PDCCH candidate include the resources of the CCEs of that PDCCH candidate. The resources of the CCEs of that PDCCH candidate are determined based on at least one of the following: the numbering order of the CCEs in the search space associated with the PDCCH, the time-domain numbering order, and the interleaving style; wherein, the numbering of the CCEs in the search space associated with the PDCCH is determined based on the aggregation level configured in the search space associated with the PDCCH.
[0563] In some embodiments of this application, the at least one search space set associated with the PDCCH includes the aforementioned L listening opportunities. The L listening opportunities are determined based on at least one of the following: the time-domain resource positions of L1 listening opportunities included in the at least one search space set, or the time-domain resource positions of L1 listening opportunities configured or predefined by the network, or the time-domain resource positions of L1 listening opportunities configured by the network; wherein L1 is less than or equal to L; the frequency-domain resource positions of L2 listening opportunities included in the at least one search space set, or the frequency-domain resource positions of L2 listening opportunities configured or predefined by the network, or the frequency-domain resource positions of L2 listening opportunities configured by the network; wherein L2 is less than or equal to L; the offset value of the listening opportunities in the search space set configured by the network or predefined by the protocol; the frequency-domain offset value of the listening opportunities in the search space set configured by the network or predefined by the protocol; wherein, when the at least one search space set includes at least two search space sets, the at least two search space sets have the same or different numbers.
[0564] In some embodiments of this application, the channel transmission device 20 may further include a receiving module. The receiving module is configured to receive capability information of the M PDCCH candidates reported by the terminal; wherein the capability information includes at least one of the following: the soft combining method supported by the terminal; the terminal's ability to support PDCCH repetition at different aggregation levels or PDCCH reception at different aggregation levels; the number of PDCCH candidates that the terminal can receive; the terminal's ability to support PDCCH reception at different resources or different aggregation levels; and the terminal's ability to support PDCCH repetition at different resources or different aggregation levels.
[0565] In some embodiments of this application, the association relationship between the first search space and the second search space corresponding to the PDCCH can be determined based on at least one of the following: the association between the third PDCCH candidate in the first search space and the fourth PDCCH candidate in the second search space; the association between the third PDCCH candidate in the first search space and the fourth PDCCH candidate in the second search space in the network configuration; the association aggregation level multiple between the first search space and the second search space in the network configuration; and the candidate offset value between the third PDCCH candidate in the first search space and the fourth PDCCH candidate in the second search space as predefined by the network configuration or protocol.
[0566] In some embodiments of this application, the third PDCCH candidate and the fourth PDCCH candidate are associated under a fourth condition; wherein the fourth condition includes at least one of the following: the aggregation level configured in the first search space is an integer multiple of the aggregation level in the second search space; the third PDCCH candidate and the fourth PDCCH candidate have the same number; and the number of PDCCH candidates configured in the associated aggregation level is the same.
[0567] In some embodiments of this application, the channel transmission device 20 may further include a second processing module. The second processing module may be used to configure at least three search spaces to the terminal; wherein the at least three search spaces are used for PDCCH monitoring or reception, and the aggregation level of PDCCH candidates in different search spaces is the same.
[0568] In some embodiments of this application, the resources of the PDCCH candidates in the above-mentioned at least three search spaces can be determined according to the numbering of the at least three search spaces.
[0569] In some embodiments of this application, when at least three search spaces are associated with the same set of control resources, the PDCCH candidate resource in the a-th search space among the at least three search spaces can be determined according to at least one of the following: search space number a; search space number a-1; resource number of the PDCCH candidate in the (a-1)-th search space; resource number of the PDCCH candidate in the A1-th search space, where A1 is a configured or defined parameter, or determined according to a configured or predefined parameter, or is the smallest search space number among the search space numbers of the at least three search spaces, or is the largest search space number among the search space numbers of the at least three search spaces, or is the smallest search space number among the associated control resource sets, or is the largest search space number among the associated control resource sets; and the number of search spaces configured in the control resource set associated with the a-th search space. Where a is a positive integer.
[0570] In some embodiments of this application, the channel transmission apparatus 20 may further include a second processing module. The second processing module can be configured, when the terminal supports soft combining, to allow the terminal to receive PDCCH candidates that include multiple PDCCH candidates with different aggregation levels.
[0571] In the channel transmission apparatus provided in this application embodiment, since the channel transmission apparatus can send PDCCH to the terminal, and the monitoring or reception of the PDCCH includes M PDCCH candidates or L PDCCH monitoring opportunities, the aggregation levels of the M PDCCH candidates are the same or different, or the aggregation levels of the M PDCCH candidates in the L PDCCH monitoring opportunities are the same or different, therefore, when merging PDCCH candidates, it is not necessary to require that the aggregation levels of the M PDCCH candidates are exactly the same. Thus, for terminals with limited bandwidth resources, PDCCH resources can be used flexibly, and for terminals with limited bandwidth resources, system resources can be fully utilized when resources are insufficient.
[0572] The channel transmission device provided in this application embodiment can implement all the processes implemented in the above network-side device method embodiment and achieve the same technical effect. To avoid repetition, it will not be described again here.
[0573] As shown in Figure 13, this application embodiment also provides a communication device 100, including a processor 101 and a memory 102. The memory 102 stores programs or instructions that can run on the processor 101. For example, when the communication device 100 is a terminal, the program or instructions executed by the processor 101 implement the various steps of the above-described terminal-side method embodiment and achieve the same technical effect. When the communication device 100 is a network-side device, the program or instructions executed by the processor 101 implement the various steps of the above-described network-side device method embodiment and achieve the same technical effect. To avoid repetition, this will not be described again here.
[0574] This application also provides a terminal, including 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 steps in the above-described terminal-side method embodiments. This terminal embodiment corresponds to the above-described terminal-side method embodiments; all implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effects. The terminal can be the channel transmission device shown in Figure 11. Specifically, Figure 14 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of this application.
[0575] The terminal 1000 includes, but is not limited to, at least some of the following components: radio frequency unit 1001, network module 1002, audio output unit 1003, input unit 1004, sensor 1005, display unit 1006, user input unit 1007, interface unit 1008, memory 1009, and processor 1010.
[0576] Those skilled in the art will understand that the terminal 1000 may also include a power supply (such as a battery) for powering various components. The power supply can be logically connected to the processor 1010 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in Figure 14 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.
[0577] It should be understood that, in this embodiment, the input unit 1004 may include a graphics processor 10041 and a microphone 10042. The graphics processor 10041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1006 may include a display panel 10061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.
[0578] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1001 can transmit it to the processor 1010 for processing; in addition, the radio frequency unit 1001 can send uplink data to the network-side device. Typically, the radio frequency unit 1001 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.
[0579] The memory 1009 can be used to store software programs or instructions, as well as various data. The memory 1009 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1009 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1009 in this embodiment includes, but is not limited to, these and any other suitable types of memory.
[0580] The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into the processor 1010.
[0581] The processor 1010 can be used to determine whether to listen to or receive a PDCCH based on the first information. The listening to or receiving of the PDCCH includes M PDCCH candidates or L PDCCH listening opportunities. The M PDCCH candidates may have the same or different aggregation levels, or the M PDCCH candidates among the L PDCCH listening opportunities may have the same or different aggregation levels, where M and L are both integers greater than or equal to 2. The first information includes at least one of the following: the PDCCH merging method; the reference aggregation level; the configuration information of the reference search space set; the configuration information of the search space; the configuration information of the control resource set; the configuration information of the listening opportunity; and the type of the wireless network temporary identifier.
[0582] In some embodiments of this application, the M PDCCH candidates or the L PDCCH listening opportunities may be associated; or, the search space set corresponding to the M PDCCH candidates or the search space set corresponding to the L PDCCH listening opportunities may be associated; or, the control resource set of the search space set corresponding to the M PDCCH candidates or the control resource set of the search space set corresponding to the L PDCCH listening opportunities may be associated.
[0583] In some embodiments of this application, the merging method of the PDCCH may include at least one of a first merging method and a second merging method; wherein the first merging method and the second merging method are different.
[0584] In some embodiments of this application, the aforementioned reference aggregation level can be used to determine at least one of the following: the output sequence e of the aforementioned PDCCH. k Or the encoded bit sequence e sent by the PDCCH k Or the encoded bit sequence e received by the PDCCH k The output sequence length E of the aforementioned PDCCH, or the length E of the encoded bits transmitted by the PDCCH, or the length E of the encoded bits received by the PDCCH; the sequence y of the ring buffer of the aforementioned PDCCH. n , or the sequence y of the PDCCH-encoded ring buffer n , or the sequence y of the ring buffer decoded by the PDCCH n The sequence length N of the PDCCH ring buffer, or the sequence length N of the PDCCH encoded ring buffer, or the sequence length N of the PDCCH decoded ring buffer.
[0585] In some embodiments of this application, the aggregation level of the M PDCCH candidates may include any one of the following: the aggregation level corresponding to the M PDCCH candidates received or detected by the terminal; or at least one aggregation level configured in at least one search space associated with the M PDCCH candidates.
[0586] In some embodiments of this application, the aforementioned reference search space set may include any of the following: the search space set of the PDCCH candidate with the smallest aggregation level among the M PDCCH candidates; the search space set with the smallest aggregation level configured in the search space set corresponding to the M PDCCH candidates; the search space set corresponding to the smallest aggregation level configured in the search space set; the search space set corresponding to the smallest aggregation level among the M PDCCH candidates, provided that the aggregation levels of the M PDCCH candidates satisfy a first condition, wherein the first condition includes the PDCCH code rate determined according to the aggregation level being higher than a preset value; the search space set corresponding to the smallest search space set number; the search space set corresponding to the largest search space set number; the search space set corresponding to the network-configured or predefined search space set number; the search space set associated with the control resource set corresponding to the smallest control resource set number or the largest control resource set number in the control resource set corresponding to the M PDCCH candidates; and the search space set configured within the control resource set corresponding to the control resource set number.
[0587] In some embodiments of this application, the reference aggregation level or one or more aggregation levels of the M PDCCH candidates satisfy at least one of the following: a value configured for the network or a value predefined by the protocol; determined based on the aggregation level of the M PDCCH candidates; determined based on one or more search spaces associated with the M PDCCH candidates; determined based on the reference search space; determined based on the set of search spaces for links; determined based on the set of control resources for links.
[0588] In some embodiments of this application, the first information includes the aforementioned reference aggregation level. Exemplarily, the processor 1010 can also be configured to determine second information based on the aggregation level of the m-th PDCCH candidate among the M PDCCH candidates and the reference aggregation level; and to perform PDCCH monitoring or reception according to the second information. The second information includes at least one of the following: the number of monitoring opportunities among the M PDCCH candidates; the number of blind checks in the search space set associated with the PDCCH; and the number of blind checks corresponding to the aggregation level of the m-th PDCCH candidate.
[0589] In some embodiments of this application, the processor 1010 can be specifically configured to determine second information based on the aggregation level of the m-th PDCCH candidate and the aforementioned reference aggregation level, provided that a second condition is met. The second condition includes any one of the following: the aggregation level of the M PDCCH candidates is greater than or equal to the reference aggregation level; or the aggregation level of the second PDCCH candidate in the first search space associated with the PDCCH is greater than or equal to the reference aggregation level.
[0590] In some embodiments of this application, the resources of any PDCCH candidate among the M PDCCH candidates can be determined based on the aggregation level configured in the search space associated with the PDCCH.
[0591] In some embodiments of this application, the resources of any PDCCH candidate include the resources of the CCEs of that PDCCH candidate. The resources of the CCEs of that PDCCH candidate are determined based on at least one of the following: the numbering order of the CCEs in the search space associated with the PDCCH, the time-domain numbering order, and the interleaving style; wherein, the numbering of the CCEs in the search space associated with the PDCCH is determined based on the aggregation level configured in the search space associated with the PDCCH.
[0592] In some embodiments of this application, the first information includes the aforementioned reference aggregation level. Exemplarily, the processor 1010 can also be used to determine third information based on the reference aggregation level; and to perform the aforementioned PDCCH monitoring or reception according to the third information. The third information includes at least one of the following: the output sequence y of the ring buffer. n The length N of the ring buffer, and the encoded bit sequence e k , where E is the length of the encoded bit sequence.
[0593] In some embodiments of this application, the output sequence of at least one of the first PDCCH candidate and the second PDCCH candidate in the above-mentioned PDCCH can be determined according to at least one of the following: the output sequence y of the ring buffer n The encoded bit sequence e k The output sequence y of the ring buffer n The starting position of the encoded bit sequence e k The starting position; the predefined starting position; the configured starting position; the output sequence y of the ring buffer. n Or the encoded bit sequence e k The Eth sequence bit; the output sequence y of the ring buffer n Or the encoded bit sequence e k The E2nd sequence bit; the output sequence y of the ring buffer nOr the encoded bit sequence e k The E1st sequence bit; where E1 is the coded bit length of the first PDCCH candidate and E2 is the coded bit length of the second PDCCH candidate.
[0594] In some embodiments of this application, the first sub-PDCCH candidate of the second PDCCH candidate, or the first sub-PDCCH candidate corresponding to the first listening opportunity among the L listening opportunities mentioned above, can be determined based on at least one of the following: the output sequence y of the ring buffer. n The encoded bit sequence e k The output sequence y of the ring buffer n The starting position of the encoded bit sequence e k The starting position; the output sequence y of the ring buffer n Or the encoded bit sequence e k The Eth sequence bit; the output sequence y of the ring buffer n Or the encoded bit sequence e k The E1st sequence bit.
[0595] In some embodiments of this application, the second sub-PDCCH candidate of the second PDCCH candidate, or the second sub-PDCCH candidate corresponding to the second listening opportunity among the L listening opportunities mentioned above, can be determined based on at least one of the following: the output sequence y of the ring buffer. n The encoded bit sequence e k ; Encoded bit sequence The output sequence y of the ring buffer n The starting position of the encoded bit sequence e k The starting position; the encoded bit sequence The starting position; the output sequence y of the ring buffer n Or the encoded bit sequence e k The Eth sequence bit; the output sequence y of the ring buffer n Or the encoded bit sequence e k The E1st sequence bit; the output sequence y of the ring buffer n The encoded bit sequence e k E2 - One sequence of bits. Wherein, the encoded bit sequence... The output sequence, encoded sequence, or decoded sequence of the first PDCCH candidate.
[0596] In some embodiments of this application, the sequence of at least one of the first PDCCH candidate and the second PDCCH candidate, or the first sub-PDCCH of the second PDCCH candidate, or the second sub-PDCCH of the second PDCCH candidate, can be determined based on at least one of the following: the payload of downlink control information; the payload size of downlink control information; the sequence encoding bits of the aforementioned reference aggregation level; the sequence encoding bits of the second PDCCH candidate; the sequence encoding bits of the first PDCCH candidate; the sequence encoding bits of the first sub-PDCCH of the second PDCCH candidate; and the sequence encoding bits of the second sub-PDCCH of the second PDCCH candidate.
[0597] In some embodiments of this application, the processor 1010 can specifically be used to determine third information based on the aforementioned reference aggregation level when a third condition is met. The third condition includes any one of the following: the aggregation level of the second PDCCH candidate in the aforementioned PDCCH is less than the reference aggregation level; the aggregation level of the aforementioned M PDCCH candidates is greater than or equal to the reference aggregation level of the aforementioned PDCCH; the aggregation level of the second PDCCH candidate in the first search space associated with the aforementioned PDCCH is less than the reference aggregation level.
[0598] In some embodiments of this application, the at least one search space set associated with the PDCCH includes the aforementioned L listening opportunities. The L listening opportunities are determined based on at least one of the following: the time-domain resource positions of L1 listening opportunities included in the at least one search space set, or the time-domain resource positions of L1 listening opportunities configured or predefined by the network, or the time-domain resource positions of L1 listening opportunities configured by the network; wherein L1 is less than or equal to L; the frequency-domain resource positions of L2 listening opportunities included in the at least one search space set, or the frequency-domain resource positions of L2 listening opportunities configured or predefined by the network, or the frequency-domain resource positions of L2 listening opportunities configured by the network; wherein L2 is less than or equal to L; the offset value of the listening opportunities in the search space set configured by the network or predefined by the protocol; the frequency-domain offset value of the listening opportunities in the search space set configured by the network or predefined by the protocol; wherein, when the at least one search space set includes at least two search space sets, the at least two search space sets have the same or different numbers.
[0599] In some embodiments of this application, the radio frequency unit 1001 can be used to report the capability information of the aforementioned M PDCCH candidates; wherein, the capability information includes at least one of the following: the soft combining method supported by the terminal; the terminal's ability to support PDCCH repetition at different aggregation levels or PDCCH reception at different aggregation levels; the number of PDCCH candidates that the terminal can receive; the terminal's ability to support PDCCH reception at different resources or different aggregation levels; and the terminal's ability to support PDCCH repetition at different resources or different aggregation levels.
[0600] In some embodiments of this application, the association relationship between the first search space and the second search space corresponding to the PDCCH can be determined based on at least one of the following: the association between the third PDCCH candidate in the first search space and the fourth PDCCH candidate in the second search space; the association between the third PDCCH candidate in the first search space and the fourth PDCCH candidate in the second search space in the network configuration; the association aggregation level multiple between the first search space and the second search space in the network configuration; and the candidate offset value between the third PDCCH candidate in the first search space and the fourth PDCCH candidate in the second search space as predefined by the network configuration or protocol.
[0601] In some embodiments of this application, the third PDCCH candidate and the fourth PDCCH candidate are associated under a fourth condition; wherein the fourth condition includes at least one of the following: the aggregation level configured in the first search space is an integer multiple of the aggregation level in the second search space; the third PDCCH candidate and the fourth PDCCH candidate have the same number; and the number of PDCCH candidates configured in the associated aggregation level is the same.
[0602] In some embodiments of this application, the processor 1010 can also be used to listen to or receive PDCCH based on at least three search spaces configured by the network; wherein the aggregation level of PDCCH candidates in different search spaces is the same.
[0603] In some embodiments of this application, the resources of the PDCCH candidates in the above-mentioned at least three search spaces can be determined according to the numbering of the at least three search spaces.
[0604] In some embodiments of this application, when at least three search spaces are associated with the same set of control resources, the PDCCH candidate resource in the a-th search space among the at least three search spaces can be determined according to at least one of the following: search space number a; search space number a-1; resource number of the PDCCH candidate in the (a-1)-th search space; resource number of the PDCCH candidate in the A1-th search space, where A1 is a configured or defined parameter, or determined according to a configured or predefined parameter, or is the smallest search space number among the search space numbers of the at least three search spaces, or is the largest search space number among the search space numbers of the at least three search spaces, or is the smallest search space number among the associated control resource sets, or is the largest search space number among the associated control resource sets; and the number of search spaces configured in the control resource set associated with the a-th search space. Where a is a positive integer.
[0605] In some embodiments of this application, the processor 1010 can also be used to merge the above M PDCCH candidates according to the above reference aggregation level; wherein M is pre-configured, network-configured, or determined by the terminal based on the number of blind detections, and the M PDCCH candidates are in one search space or in multiple search spaces, and the multiple search spaces have the same or different numbers.
[0606] In some embodiments of this application, the processor 1010 may specifically be used to: receive the M PDCCH candidates based on the above-mentioned reference aggregation level and the relationship between the CCE resources and PDCCH candidates configured by the network, wherein the relationship between the CCE resources and PDCCH candidates is predefined by the network configuration or protocol; and / or, perform blind detection based on the above-mentioned reference aggregation level, and receive the detected PDCCH candidates when the blind detection limit is reached; and / or, receive the M PDCCH candidates based on the above-mentioned reference aggregation level and the index of the above-mentioned M PDCCH candidates; and / or, when the network configuration terminal performs PDCCH repetition in at least one search space or the network configures a blind detection corresponding to the number of PDCCH repetitions, receive the above-mentioned M PDCCH candidates based on the above-mentioned reference aggregation level; and / or, determine the location, resources, or number of the CCE based on the above-mentioned reference aggregation level, and receive the above-mentioned M PDCCH candidates based on the determined location, resources, or number of the CCE.
[0607] In some embodiments of this application, the first information may be reported by the terminal or configured by the network.
[0608] In the terminal provided in this application embodiment, since the terminal can determine the listening or receiving of PDCCH based on the first information, and the listening or receiving of PDCCH includes M PDCCH candidates or L PDCCH listening opportunities, the aggregation levels of the M PDCCH candidates are the same or different, or the aggregation levels of the M PDCCH candidates in the L PDCCH listening opportunities are the same or different, when merging PDCCH candidates, it is not necessary to require that the aggregation levels of the M PDCCH candidates are exactly the same. Thus, for terminals with limited bandwidth resources, PDCCH resources can be used flexibly, and for terminals with limited bandwidth resources, system resources can be fully utilized when resources are insufficient.
[0609] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above terminal side method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.
[0610] This application also provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the above-described network-side device method embodiments. This network-side device embodiment corresponds to the above-described network-side device method embodiments. All implementation processes and methods of the above method embodiments can be applied to this network-side device embodiment and achieve the same technical effects.
[0611] Specifically, this application embodiment also provides a network-side device, which may be the channel transmission device shown in FIG12. As shown in FIG15, the network-side device 1100 includes: an antenna 111, a radio frequency device 112, a baseband device 113, a processor 114, and a memory 115. The antenna 111 is connected to the radio frequency device 112. In the uplink direction, the radio frequency device 112 receives information through the antenna 111 and sends the received information to the baseband device 113 for processing. In the downlink direction, the baseband device 113 processes the information to be transmitted and sends it to the radio frequency device 112. The radio frequency device 112 processes the received information and transmits it through the antenna 111.
[0612] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 113, which includes a baseband processor.
[0613] The baseband device 113 may include at least one baseband board, on which multiple chips are disposed, as shown in FIG15. One of the chips is, for example, a baseband processor, which is connected to the memory 115 via a bus interface to call the program or instructions in the memory 115 to execute the network-side device operation shown in the above method embodiment.
[0614] The network-side device may also include a network interface 116, such as a Common Public Radio Interface (CPRI).
[0615] The radio frequency device 112 can be used to send PDCCH to the terminal. The monitoring or reception of the PDCCH includes M PDCCH candidates or L PDCCH monitoring opportunities. The M PDCCH candidates have the same or different aggregation levels, or the M PDCCH candidates in the L PDCCH monitoring opportunities have the same or different aggregation levels. M and L are both integers greater than or equal to 2.
[0616] In some embodiments of this application, the M PDCCH candidates or the L PDCCH listening opportunities may be associated; or, the search space set corresponding to the M PDCCH candidates or the search space set corresponding to the L PDCCH listening opportunities may be associated; or, the control resource set of the search space set corresponding to the M PDCCH candidates or the control resource set of the search space set corresponding to the L PDCCH listening opportunities may be associated.
[0617] In some embodiments of this application, the radio frequency device 112 can also be used to send first information to the terminal. The first information is used to determine whether the PDCCH is being monitored or received, and includes at least one of the following: the PDCCH merging method; the reference aggregation level; the configuration information of the reference search space set; the configuration information of the search space; the configuration information of the control resource set; the configuration information of the monitoring opportunity; and the type of the wireless network temporary identifier.
[0618] In some embodiments of this application, the merging method of the PDCCH may include at least one of a first merging method and a second merging method; wherein the first merging method and the second merging method are different.
[0619] In some embodiments of this application, the aforementioned reference aggregation level can be used to determine at least one of the following: the output sequence e of the PDCCH. k Or the encoded bit sequence e sent by the PDCCH k Or the encoded bit sequence e received by the PDCCH k The output sequence length E of the PDCCH, or the length E of the encoded bits transmitted by the PDCCH, or the length E of the encoded bits received by the PDCCH; the sequence y of the PDCCH's ring buffer. n , or the sequence y of the PDCCH-encoded ring buffer n , or the sequence y of the ring buffer decoded by the PDCCH nThe sequence length N of the PDCCH ring buffer, or the sequence length N of the PDCCH encoded ring buffer, or the sequence length N of the PDCCH decoded ring buffer.
[0620] In some embodiments of this application, the aggregation level of the M PDCCH candidates may include any one of the following: the aggregation level corresponding to the M PDCCH candidates received or detected by the terminal; or at least one aggregation level configured in at least one search space associated with the M PDCCH candidates.
[0621] In some embodiments of this application, the aforementioned reference search space set may include any of the following: the search space set of the PDCCH candidate with the smallest aggregation level among the M PDCCH candidates; the search space set with the smallest aggregation level configured in the search space set corresponding to the M PDCCH candidates; the search space set corresponding to the smallest aggregation level configured in the search space set; the search space set corresponding to the smallest aggregation level among the M PDCCH candidates, provided that the aggregation levels of the M PDCCH candidates satisfy a first condition, wherein the first condition includes the PDCCH code rate determined according to the aggregation level being higher than a preset value; the search space set corresponding to the smallest search space set number; the search space set corresponding to the largest search space set number; the search space set corresponding to the network-configured or predefined search space set number; the search space set associated with the control resource set corresponding to the smallest control resource set number or the largest control resource set number in the control resource set corresponding to the M PDCCH candidates; and the search space set configured within the control resource set corresponding to the control resource set number.
[0622] In some embodiments of this application, the reference aggregation level or one or more aggregation levels of the M PDCCH candidates satisfy at least one of the following: a value configured for the network or a value predefined by the protocol; determined based on the aggregation level of the M PDCCH candidates; determined based on one or more search spaces associated with the M PDCCH candidates; determined based on the reference search space; determined based on the set of search spaces for links; determined based on the set of control resources for links.
[0623] In some embodiments of this application, the resources of any PDCCH candidate among the M PDCCH candidates can be determined based on the aggregation level configured in the search space associated with the PDCCH.
[0624] In some embodiments of this application, the resources of any PDCCH candidate include the resources of the CCEs of that PDCCH candidate. The resources of the CCEs of that PDCCH candidate are determined based on at least one of the following: the numbering order of the CCEs in the search space associated with the PDCCH, the time-domain numbering order, and the interleaving style; wherein, the numbering of the CCEs in the search space associated with the PDCCH is determined based on the aggregation level configured in the search space associated with the PDCCH.
[0625] In some embodiments of this application, the at least one search space set associated with the PDCCH includes the aforementioned L listening opportunities. The L listening opportunities are determined based on at least one of the following: the time-domain resource positions of L1 listening opportunities included in the at least one search space set, or the time-domain resource positions of L1 listening opportunities configured or predefined by the network, or the time-domain resource positions of L1 listening opportunities configured by the network; wherein L1 is less than or equal to L; the frequency-domain resource positions of L2 listening opportunities included in the at least one search space set, or the frequency-domain resource positions of L2 listening opportunities configured or predefined by the network, or the frequency-domain resource positions of L2 listening opportunities configured by the network; wherein L2 is less than or equal to L; the offset value of the listening opportunities in the search space set configured by the network or predefined by the protocol; the frequency-domain offset value of the listening opportunities in the search space set configured by the network or predefined by the protocol; wherein, when the at least one search space set includes at least two search space sets, the at least two search space sets have the same or different numbers.
[0626] In some embodiments of this application, the radio frequency device 112 can also be used to receive capability information of the M PDCCH candidates reported by the terminal; wherein, the capability information includes at least one of the following: the soft combining method supported by the terminal; the terminal's ability to support PDCCH repetition at different aggregation levels or PDCCH reception at different aggregation levels; the number of PDCCH candidates that the terminal can receive; the terminal's ability to support PDCCH reception at different resources or different aggregation levels; and the terminal's ability to support PDCCH repetition at different resources or different aggregation levels.
[0627] In some embodiments of this application, the association relationship between the first search space and the second search space corresponding to the PDCCH can be determined based on at least one of the following: the association between the third PDCCH candidate in the first search space and the fourth PDCCH candidate in the second search space; the association between the third PDCCH candidate in the first search space and the fourth PDCCH candidate in the second search space in the network configuration; the association aggregation level multiple between the first search space and the second search space in the network configuration; and the candidate offset value between the third PDCCH candidate in the first search space and the fourth PDCCH candidate in the second search space as predefined by the network configuration or protocol.
[0628] In some embodiments of this application, the third PDCCH candidate and the fourth PDCCH candidate are associated under a fourth condition; wherein the fourth condition includes at least one of the following: the aggregation level configured in the first search space is an integer multiple of the aggregation level in the second search space; the third PDCCH candidate and the fourth PDCCH candidate have the same number; and the number of PDCCH candidates configured in the associated aggregation level is the same.
[0629] In some embodiments of this application, the processor 114 can be used to configure at least three search spaces for the terminal; wherein the at least three search spaces are used for listening to or receiving PDCCH, and the aggregation level of PDCCH candidates in different search spaces is the same.
[0630] In some embodiments of this application, the resources of the PDCCH candidates in the above-mentioned at least three search spaces can be determined according to the numbering of the at least three search spaces.
[0631] In some embodiments of this application, when at least three search spaces are associated with the same set of control resources, the PDCCH candidate resource in the a-th search space among the at least three search spaces can be determined according to at least one of the following: search space number a; search space number a-1; resource number of the PDCCH candidate in the (a-1)-th search space; resource number of the PDCCH candidate in the A1-th search space, where A1 is a configured or defined parameter, or determined according to a configured or predefined parameter, or is the smallest search space number among the search space numbers of the at least three search spaces, or is the largest search space number among the search space numbers of the at least three search spaces, or is the smallest search space number among the associated control resource sets, or is the largest search space number among the associated control resource sets; and the number of search spaces configured in the control resource set associated with the a-th search space. Where a is a positive integer.
[0632] In some embodiments of this application, the processor 114 can also be configured, when the terminal supports soft merging, to receive PDCCH candidates that include multiple PDCCH candidates with different aggregation levels.
[0633] In the network-side device provided in this application embodiment, since the network-side device can send PDCCH to the terminal, and the listening or receiving of the PDCCH includes M PDCCH candidates or L PDCCH listening opportunities, the aggregation levels of the M PDCCH candidates are the same or different, or the aggregation levels of the M PDCCH candidates in the L PDCCH listening opportunities are the same or different, so when merging PDCCH candidates, it is not necessary to require that the aggregation levels of the M PDCCH candidates are exactly the same. Thus, for terminals with limited bandwidth resources, PDCCH resources can be used flexibly, and for terminals with limited bandwidth resources, system resources can be fully utilized when resources are insufficient.
[0634] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above network-side device method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.
[0635] In addition, the network-side device 1100 of this application embodiment also includes: a program or instructions stored in the memory 115 and executable on the processor 114. The processor 114 calls the program or instructions in the memory 115 to execute the method executed by the network-side device and achieve the same technical effect. To avoid repetition, it will not be described in detail here.
[0636] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described channel transmission method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.
[0637] The processor mentioned above is either the processor in the terminal described in the above embodiments or the processor in the network-side device. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.
[0638] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described channel transmission method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.
[0639] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.
[0640] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described channel transmission method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.
[0641] This application also provides a communication system, including: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the terminal-side method as described above, and the network-side device can be used to perform the steps of the network-side device method as described above.
[0642] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
[0643] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.), and the computer software product includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.
[0644] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.
Claims
1. A channel transmission method, the method comprising: Based on the first information, the terminal determines whether to listen to or receive the Physical Downlink Control Channel (PDCCH). Wherein, the monitoring or reception of PDCCH includes M PDCCH candidates or L PDCCH monitoring opportunities, wherein the aggregation levels of the M PDCCH candidates are the same or different, or the aggregation levels of the M PDCCH candidates in the L PDCCH monitoring opportunities are the same or different, and M and L are both integers greater than or equal to 2. The first information includes at least one of the following: The merging method of PDCCH; Refer to the aggregation level; Refer to the configuration information of the search space collection; Search space configuration information; Control the configuration information of the resource set; Configuration information for monitoring opportunities; The type of temporary identifier for wireless networks.
2. The method of claim 1, wherein, The M PDCCH candidates or the L PDCCH listening opportunities are associated; or, the search space set corresponding to the M PDCCH candidates or the search space set corresponding to the L PDCCH listening opportunities are associated; or, the control resource set of the search space set corresponding to the M PDCCH candidates or the control resource set of the search space set corresponding to the L PDCCH listening opportunities are associated.
3. The method of claim 1 or 2, wherein, The reference aggregation level is used to determine at least one of the following: the output sequence e of the PDCCH k , or the sequence e of coded bits transmitted by the PDCCH k , or the sequence e of coded bits received by the PDCCH k ; The length E of the output sequence of the PDCCH, or the length E of the encoded bits sent by the PDCCH, or the length E of the encoded bits received by the PDCCH; a sequence y of a ring buffer of the PDCCH n , or a sequence y of a ring buffer of the PDCCH encoding n , or a sequence y of a ring buffer of the PDCCH decoding n ; The sequence length N of the PDCCH ring buffer, or the sequence length N of the PDCCH encoded ring buffer, or the sequence length N of the PDCCH decoded ring buffer.
4. The method of any one of claims 1 to 3, wherein, The aggregation levels of the M PDCCH candidates include any one of the following: The terminal receives or detects the aggregation levels corresponding to the M PDCCH candidates; At least one aggregation level configured in at least one search space of the M PDCCH candidate associations.
5. The method of any one of claims 1 to 4, wherein, The reference aggregation level or one or more aggregation levels of the M PDCCH candidates satisfy at least one of the following: Values configured for the network or predefined values for the protocol; Determined based on the aggregation level of the M PDCCH candidates; Determined based on one or more search spaces associated with the M PDCCH candidates; Determined based on the reference search space; Determined based on the search space set of the links; Determined based on the set of control resources linked.
6. The method of any one of claims 1 to 5, wherein, The first information includes the reference aggregation level, and the method further includes: The terminal determines the second information based on the aggregation level of the m-th PDCCH candidate among the M PDCCH candidates and the reference aggregation level; The terminal listens to or receives the PDCCH based on the second information; The second information includes at least one of the following: The number of listening opportunities among the M PDCCH candidates; The number of blind checks in the search space set associated with the PDCCH; The number of blind checks corresponding to the aggregation level of the m-th PDCCH candidate.
7. The method of claim 6, wherein, The terminal determines second information based on the aggregation level of the m-th PDCCH candidate among the M PDCCH candidates and the reference aggregation level, including: If the second condition is met, the terminal determines the second information based on the aggregation level of the m-th PDCCH candidate and the reference aggregation level; The second condition includes any one of the following: The aggregation level of the M PDCCH candidates is greater than or equal to the reference aggregation level; The aggregation level of the second PDCCH candidate in the first search space associated with the PDCCH is greater than or equal to the reference aggregation level.
8. The method of claim 6 or 7, wherein, The resources of any PDCCH candidate among the M PDCCH candidates are determined according to the aggregation level configured in the search space associated with the PDCCH.
9. The method of claim 8, wherein, The resources of any PDCCH candidate include the resources of the control channel element (CCE) of any PDCCH candidate; The resources of the CCE for any PDCCH candidate are determined based on at least one of the following: the order of CCE numbers in the search space associated with the PDCCH, the order of time-domain numbers, and the interleaving pattern; wherein the number of the CCE in the search space associated with the PDCCH is determined based on the aggregation level configured in the search space associated with the PDCCH.
10. The method of any one of claims 1 to 9, wherein, The first information includes the reference aggregation level, and the method further includes: The terminal determines the third information based on the reference aggregation level; The terminal listens to or receives the PDCCH based on the third information; wherein the third information comprises at least one of: an output sequence y of the circular buffer n , a length N of the circular buffer, an encoded bit sequence e k , a length E of the encoded bit sequence.
11. The method of claim 10, wherein, The output sequence of at least one of the first PDCCH candidate and the second PDCCH candidate in the PDCCH is determined according to at least one of the following: the output sequence y of the ring buffer n ; The encoded bit sequence e k ; the output sequence y of the ring buffer n the start position; The encoded bit sequence e k the start position of the encoded bit sequence e Predefined starting position; The starting position of the configuration; an output sequence y of the ring buffer n or an E-th sequence bit of the encoded bit sequence e k an output sequence y of the ring buffer n or a E2th sequence bit of the encoded bit sequence e k an output sequence y of the ring buffer n or a first E1th sequence bit of the encoded bit sequence e k Wherein, E1 is the encoded bit length of the first PDCCH candidate, and E2 is the encoded bit length of the second PDCCH candidate.
12. The method of claim 11, wherein, The first sub-PDCCH candidate of the second PDCCH candidate, or the first sub-PDCCH candidate corresponding to the first listening opportunity among the L listening opportunities, is determined according to at least one of the following: the output sequence y of the ring buffer n ; The encoded bit sequence e k ; the output sequence y of the ring buffer n the start position; The encoded bit sequence e k the start position of the encoded bit sequence e an output sequence y of the ring buffer n or an E-th sequence bit of the encoded bit sequence e k an output sequence y of the ring buffer n or a first E1th sequence bit of the encoded bit sequence e k 13. The method of claim 11 or 12, wherein, The second sub-PDCCH candidate of the second PDCCH candidate, or the second sub-PDCCH candidate corresponding to the second listening opportunity among the L listening opportunities, is determined according to at least one of the following: the output sequence y of the ring buffer n ; The encoded bit sequence e k ; Encoding bit sequence the output sequence y of the ring buffer n the start position; The encoded bit sequence e k the start position of the encoded bit sequence e Encoding bit sequence The starting position; an output sequence y of the ring buffer n or an E-th sequence bit of the encoded bit sequence e k an output sequence y of the ring buffer n or a first E1th sequence bit of the encoded bit sequence e k the output sequence y of the ring buffer n the encoded bit sequence e k E2 - 1 sequence bit wherein the sequence of coded bits The output sequence, encoded sequence, or decoded sequence of the first PDCCH candidate.
14. The method of any one of claims 11 to 13, wherein, The sequence of at least one of the first PDCCH candidate and the second PDCCH candidate, or the first sub-PDCCH of the second PDCCH candidate, or the second sub-PDCCH of the second PDCCH candidate, is determined according to at least one of the following: The payload of downlink control information; The payload size of downlink control information; The sequence-encoded bits of the reference aggregation level; The sequence encoding bits of the second PDCCH candidate; The sequence encoding bits of the first PDCCH candidate; The sequence encoding bits of the first sub-PDCCH of the second PDCCH candidate; The sequence encoding bits of the second sub-PDCCH of the second PDCCH candidate.
15. The method of any one of claims 10 to 14, wherein, The terminal determines third information based on the reference aggregation level, including: If the third condition is met, the terminal determines the third information based on the reference aggregation level; The third condition includes any one of the following: The aggregation level of the second PDCCH candidate in the PDCCH is lower than the reference aggregation level; The aggregation level of the M PDCCH candidates is greater than or equal to the reference aggregation level of the PDCCH; The aggregation level of the second PDCCH candidate in the first search space associated with the PDCCH is lower than the reference aggregation level.
16. The method of any one of claims 1 to 15, wherein, The at least one search space set associated with the PDCCH includes the L listening opportunities; The L listening opportunities are determined according to at least one of the following: The time-domain resource locations of L1 listening opportunities included in the at least one search space set, or the time-domain resource locations of L1 listening opportunities configured or predefined by the network, or the time-domain resource locations of L1 time-domain resources configured by the network; wherein, L1 is less than or equal to L; The frequency domain resource locations of the L2 listening opportunities included in the at least one search space set, or the frequency domain resource locations of the L2 listening opportunities configured or predefined by the network, or the L2 frequency domain resource locations configured by the network; wherein, L2 is less than or equal to L; The offset value of the listening opportunity in a search space set configured by the network or predefined by the protocol; The frequency domain offset value of the listening opportunity in a search space set configured by the network or predefined by the protocol; Wherein, in the case that the at least one search space set includes at least two search space sets, the at least two search space sets may have the same or different numbers.
17. The method of any one of claims 1 to 16, wherein, The method further includes: The terminal reports the capability information of the M PDCCH candidates; The capability information includes at least one of the following: The terminal supports soft merging methods; The terminal supports the ability to receive PDCCHs with different aggregation levels or PDCCHs with different aggregation levels repeatedly. The terminal supports receiving a certain number of PDCCH candidates. The terminal supports the ability to receive PDCCHs with different resources or different aggregation levels; The terminal supports the ability to repeat PDCCH with different resources or different aggregation levels.
18. The method of any one of claims 1 to 17, wherein, The relationship between the first search space and the second search space corresponding to the PDCCH is determined according to at least one of the following: The third PDCCH candidate in the first search space and the fourth PDCCH candidate in the second search space are associated; The network configuration associates the third PDCCH candidate in the first search space with the fourth PDCCH candidate in the second search space; The network configuration determines the aggregation level multiple between the first search space and the second search space. The network configuration or protocol predefines the candidate offset value between the third PDCCH candidate in the first search space and the fourth PDCCH candidate in the second search space.
19. The method of claim 18, wherein, If the fourth condition is met, the third PDCCH candidate and the fourth PDCCH candidate are associated; The fourth condition includes at least one of the following: The aggregation levels configured in the first search space and the aggregation levels in the second search space are integer multiples of each other. The third PDCCH candidate and the fourth PDCCH have the same number; The number of PDCCH candidates is the same for the associated aggregation level configurations.
20. The method of any one of claims 1 to 19, wherein, The method further includes: The terminal listens for or receives PDCCH based on at least three search spaces configured in the network. Among these, the aggregation levels of PDCCH candidates in different search spaces within the at least three search spaces are the same.
21. The method of claim 20, wherein, The PDCCH candidate resources in the at least three search spaces are determined according to the numbering of the at least three search spaces.
22. The method of claim 21, wherein, When the at least three search spaces are associated with the same set of control resources, the resources of the PDCCH candidate in the a-th search space among the at least three search spaces are determined according to at least one of the following: Search space number a; Search space number a-1; The resource number of the PDCCH candidate in the (a-1)th search space; The resource number of the PDCCH candidate in the A1th search space, where A1 is a configured or defined parameter, or determined according to a configured or predefined parameter, or the smallest search space number among the search space numbers of the at least three search spaces, or the largest search space number among the search space numbers of the at least three search spaces, or the smallest search space number in the associated control resource set, or the largest search space number in the associated control resource set. The number of search spaces configured in the control resource set associated with the a-th search space; Where a is a positive integer.
23. The method of any one of claims 1 to 22, wherein, The method further includes: The terminal receives the M PDCCH candidates according to the reference aggregation level; Wherein, M is pre-configured, network-configured, or determined by the terminal based on the number of blind detections, and the M PDCCH candidates are in one search space or in multiple search spaces, and the multiple search spaces have the same or different numbers.
24. The method of claim 23, wherein, The terminal receives the M PDCCH candidates according to the reference aggregation level, including: The terminal receives the M PDCCH candidates based on the reference aggregation level and the relationship between the CCE resources and the PDCCH candidates. The relationship between the CCE resources and the PDCCH candidates is either network configuration or protocol predefined. And / or, The terminal performs blind detection based on the reference aggregation level, and receives the detected PDCCH candidate when the blind detection limit is reached; And / or, The terminal receives the M PDCCH candidates based on the reference aggregation level and the indexes of the M PDCCH candidates; And / or, When the network is configured to allow the terminal to repeat PDCCH in at least one search space or when the network is configured to perform blind detection corresponding to the number of PDCCH repetitions, the terminal receives the M PDCCH candidates according to the reference aggregation level. And / or, The terminal determines the location, resource, or number of the CCE based on the reference aggregation level, and receives the M PDCCH candidates based on the determined location, resource, or number of the CCE.
25. The method of any one of claims 1 to 24, wherein, The first information is reported by the terminal or configured by the network.
26. A channel transmission method, the method comprising: Network-side devices send PDCCH to terminals; Wherein, the monitoring or reception of PDCCH includes M PDCCH candidates or L PDCCH monitoring opportunities, wherein the M PDCCH candidates have the same or different aggregation levels, or the M PDCCH candidates in the L PDCCH monitoring opportunities have the same or different aggregation levels, and M and L are both integers greater than or equal to 2.
27. The method of claim 26, wherein, The method further includes: The network-side device sends first information to the terminal; The first information is used to determine whether the PDCCH is being monitored or received, and the first information includes at least one of the following: The merging method of PDCCH; Refer to the aggregation level; Refer to the configuration information of the search space collection; Search space configuration information; Control the configuration information of the resource set; Configuration information for monitoring opportunities; The type of temporary identifier for wireless networks.
28. The method of claim 26 or 27, wherein, The method further includes: The network-side device receives the capability information of the M PDCCH candidates reported by the terminal; The capability information includes at least one of the following: The terminal supports soft merging methods; The terminal supports the ability to receive PDCCHs with different aggregation levels or PDCCHs with different aggregation levels repeatedly. The terminal supports receiving a certain number of PDCCH candidates. The terminal supports the ability to receive PDCCHs with different resources or different aggregation levels; The terminal supports the ability to repeat PDCCH with different resources or different aggregation levels.
29. The method of any one of claims 26 to 28, wherein, The method further includes: The network-side device configures at least three search spaces for the terminal; The at least three search spaces are used for listening to or receiving PDCCHs, and the aggregation level of PDCCH candidates in different search spaces is the same.
30. The method of any one of claims 26 to 29, wherein, The method further includes: When the terminal supports soft merging, the network-side device configures the terminal to receive PDCCH candidates with multiple different aggregation levels.
31. A channel transmission apparatus, the apparatus comprising: First processing module; The first processing module is used to determine whether to listen to or receive the PDCCH based on the first information; Wherein, the monitoring or reception of PDCCH includes M PDCCH candidates or L PDCCH monitoring opportunities, wherein the aggregation levels of the M PDCCH candidates are the same or different, or the aggregation levels of the M PDCCH candidates in the L PDCCH monitoring opportunities are the same or different, and M and L are both integers greater than or equal to 2. The first information includes at least one of the following: The merging method of PDCCH; Refer to the aggregation level; Refer to the configuration information of the search space collection; Search space configuration information; Control the configuration information of the resource set; Configuration information for monitoring opportunities; The type of temporary identifier for wireless networks.
32. The apparatus of claim 31, wherein, The first information includes the reference aggregation level; The first processing module is further configured to determine second information based on the aggregation level of the m-th PDCCH candidate among the M PDCCH candidates and the reference aggregation level; and to perform PDCCH monitoring or reception according to the second information. The second information includes at least one of the following: The number of listening opportunities among the M PDCCH candidates; The number of blind checks in the search space set associated with the PDCCH; The number of blind checks corresponding to the aggregation level of the m-th PDCCH candidate.
33. The apparatus of claim 31 or 32, wherein, The first information includes the reference aggregation level; The first processing module is further configured to determine third information based on the reference aggregation level; and to listen to or receive the PDCCH according to the third information; The third information includes at least one of the following: an output sequence y of the circular buffer n , a length N of the circular buffer, a coded bit sequence e k , a length E of the coded bit sequence.
34. A channel transmission apparatus, the apparatus comprising: Second sending module; The second sending module is used to send PDCCH to the terminal; Wherein, the monitoring or reception of PDCCH includes M PDCCH candidates or L PDCCH monitoring opportunities, wherein the M PDCCH candidates have the same or different aggregation levels, or the M PDCCH candidates in the L PDCCH monitoring opportunities have the same or different aggregation levels, and M and L are both integers greater than or equal to 2.
35. The apparatus of claim 34, wherein, The second sending module is further configured to send first information to the terminal; The first information is used to determine whether the PDCCH is being monitored or received, and the first information includes at least one of the following: The merging method of PDCCH; Refer to the aggregation level; Refer to the configuration information of the search space collection; Search space configuration information; Control the configuration information of the resource set; Configuration information for monitoring opportunities; The type of temporary identifier for wireless networks.
36. The apparatus of claim 34 or 35, wherein, The device further includes: a second processing module; The second processing module is configured, when the terminal supports soft merging, to receive PDCCH candidates including multiple PDCCH candidates with different aggregation levels.
37. A terminal comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the channel transmission method as claimed in any one of claims 1 to 25.
38. A network-side device, comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the channel transmission method as claimed in any one of claims 26 to 30.
39. A readable storage medium storing a program or instructions that, when executed by a processor, implement the steps of the channel transmission method as claimed in any one of claims 1 to 25, or implement the steps of the channel transmission method as claimed in any one of claims 26 to 30.