Physical downlink control channel detection method, physical downlink control channel sending method, and related devices

Abstract

A physical downlink control channel detection method, a physical downlink control channel sending method, and related devices. The physical downlink control channel detection method is applied to a first communication device, and comprises: on the basis of an identifier of a search space and / or an identifier of a bandwidth part, determining locations of candidate physical downlink control channels from the search space for a physical downlink control channel; and performing physical downlink control channel detection at the locations of the candidate physical downlink control channels.

Description

Method for detecting physical downlink control channel, method for transmitting physical downlink control channel and related devices

[0001] The present disclosure claims priority to Chinese Patent Application No. 202510034860.5, filed on January 8, 2025, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of communication, and in particular, to a method for detecting a physical downlink control channel, a method for transmitting a physical downlink control channel, and related devices. BACKGROUND

[0003] In recent years, with the development of communication technology, the service interaction between communication devices (such as base stations, terminals, servers, etc.) is more and more frequent, and the communication management demand between communication devices is also higher and higher. For example, the management of the physical resource block (PRB) used by the terminal by the base station. SUMMARY

[0004] In one aspect, a method for detecting a physical downlink control channel is provided, which is applied to a first communication device and includes: determining a position of a candidate physical downlink control channel from a search space of the physical downlink control channel based on an identification of the search space and / or an identification of a partial bandwidth; and performing detection of the physical downlink control channel at the position of the candidate physical downlink control channel.

[0005] In another aspect, a method for transmitting a physical downlink control channel is provided, which is applied to a second communication device and includes: determining a position of a candidate physical downlink control channel from a search space of the physical downlink control channel based on an identification of the search space and / or an identification of a partial bandwidth; and performing transmission of the physical downlink control channel at the position of the candidate physical downlink control channel.

[0006] In yet another aspect, a communication apparatus is provided, which is applied to a first communication device and includes a processing module and a receiving module.

[0007] The processing module is configured to determine a position of a candidate physical downlink control channel from a search space of the physical downlink control channel based on an identification of the search space and / or an identification of a partial bandwidth, and the receiving module is configured to perform detection of the physical downlink control channel at the position of the candidate physical downlink control channel.

[0008] In yet another aspect, a transmitting apparatus of a physical downlink control channel is provided, which is applied to a second communication device and includes a processing module and a transmitting module.

[0009] The processing module is configured to determine the position of the candidate physical downlink control channel from the search space of the physical downlink control channel based on the identification of the search space and / or the identification of the partial bandwidth; and the sending module is configured to send the physical downlink control channel at the position of the candidate physical downlink control channel.

[0010] In another aspect, a communication apparatus is provided, which includes a memory and a processor. The memory and the processor are coupled. The memory is configured to store a computer program. The processor is configured to implement the method for detecting a physical downlink control channel and the method for sending a physical downlink control channel when executing the computer program.

[0011] In another aspect, a computer readable storage medium is provided, which has stored computer program instructions. The computer program instructions are configured to implement the method for detecting a physical downlink control channel and the method for sending a physical downlink control channel when executed by a processor.

[0012] In another aspect, a computer program product is provided, which includes computer program instructions. The computer program instructions are configured to implement the method for detecting a physical downlink control channel and the method for sending a physical downlink control channel when executed. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present disclosure, the following will briefly introduce the drawings needed to be used in some embodiments of the present disclosure. Obviously, the drawings described in the following are only some of the drawings of the present disclosure, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0014] FIG. 1 is a schematic diagram of a communication system according to some embodiments.

[0015] FIG. 2 is a flow chart of a method for detecting a physical downlink control channel according to some embodiments.

[0016] FIG. 3 is a flow chart of a method for sending a physical downlink control channel according to some embodiments.

[0017] FIG. 4 is a flow chart of a method for interaction of a physical downlink control channel according to some embodiments.

[0018] FIG. 5 is a block diagram of a communication apparatus according to some embodiments.

[0019] FIG. 6 is a block diagram of a communication apparatus according to some embodiments.

[0020] FIG. 7 is a block diagram of a communication apparatus according to some embodiments. DETAILED DESCRIPTION

[0021] The technical solutions in the present disclosure will be described clearly and completely in the present disclosure in combination with the drawings in the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present disclosure.

[0022] It should be noted that in the present disclosure, the words such as "exemplarily" or "for example" are used to represent as an example, illustration or description. Any embodiment or design scheme described as "exemplarily" or "for example" in the present disclosure should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. In fact, the words such as "exemplarily" or "for example" are intended to present the related concept in a specific manner.

[0023] Hereinafter, the terms "first", "second" are only used for description purposes, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0024] In the description of the present disclosure, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" in this document is only a description of the relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, "at least one" means one or more, and "multiple" means two or more.

[0025] Mobile communication continues the development rule of every ten years of a generation of technology, and has experienced the development of multiple generations of mobile communication networks, including but not limited to the first generation mobile communication technology (1th generation mobile communication technology, 1G), the second generation mobile communication technology (2th generation mobile communication technology, 2G), the third generation mobile communication technology (3th generation mobile communication technology, 3G), the fourth generation mobile communication technology (4th generation mobile communication technology, 4G), the fifth generation mobile communication technology (5th generation mobile communication technology, 5G). Each intergenerational transition and each technological progress greatly promotes industrial upgrading and economic and social development. From 1G to 2G, the transition from analog communication to digital communication is realized, and mobile communication enters millions of households; from 2G to 3G, 4G and 5G, the transformation from voice service to data service is realized, the transmission rate is hundreds of times higher, and the popularity and prosperity of mobile Internet applications are promoted. With the rapid development of mobile Internet, new services, new businesses, new technologies and new equipment are emerging, and 5G mobile communication systems cannot meet the needs of future flexible and diverse businesses, and the next generation of mobile communication (such as the sixth generation mobile communication technology (6th generation mobile communication technology, 6G)) system is urgently needed.

[0026] At present, in the process of managing the PRB of the terminal by the base station, the information of the PRB allocated for the terminal needs to be carried by the physical downlink control channel (physical downlink control channel, PDCCH) so that the terminal can receive the service data sent by the base station according to the PRB indicated in the PDCCH.

[0027] In new radio (NR), PDCCH is the only downlink control channel. PDCCH is used to transmit downlink control information, including scheduling allocation for physical downlink shared channel (PDSCH) reception and scheduling grant for physical uplink shared channel (PUSCH) reception, as well as power control, time slot format indication, and resource preemption indication information. NR introduces the concept of control resource set (CORESET), which is the time-frequency resource where PDCCH is located. The combination of CORESET and search space is used for the configuration of PDCCH, at the cell level and the user equipment (UE) level.

[0028] The UE needs to monitor the CORESET at the specified monitoring occasion to obtain the control information, which is achieved by blind detection in the configured search space.

[0029] The search space refers to the set of all possible PDCCH candidate positions at a certain aggregation level. Since the UE does not know the specific parameters of PDCCH in advance, such as aggregation level, control channel element (CCE) resource location, and the carried downlink control information (DCI) format, blind detection is needed to search for PDCCH.

[0030] CCE is the basic unit of PDCCH. One CCE occupies 6 resource element groups (REGs), which include a total of 72 frequency domain subcarriers, of which 54 are data resource elements (REs) and 18 are REs for demodulation reference signals (DMRS). The number of CCEs in PDCCH is called aggregation level, and the values of aggregation level are 1, 2, 4, 8, 16, etc. The specific composition of PDCCH is determined by several CCEs, which is determined by the aggregation level.

[0031] That is, the CCE represents a resource unit of the PDCCH, and is only a logical unit, and a specific correspondence to a physical resource can be defined individually, such as: one CCE corresponds to one PRB, or one CCE corresponds to one PRB bundle, or one CCE corresponds to one PRB on one orthogonal frequency-division multiplexing (OFDM) symbol, etc.

[0032] At slot n s , for the search space s of the CORESET p of the active bandwidth part (BWP) of the carrier n CI , the candidate index of the aggregation level L can be expressed as the following formula (1): The corresponding CCE index can be expressed as the following formula (2):

[0033] Here, when the search space is a common search space, the starting position (or the position offset parameter)

[0034] When the search space is a UE-specific search space, the starting position (or the position offset parameter) Y p，-1 = n RNTI ≠ 0.

[0035] When pmod3 = 0, A p = 39827.

[0036] When pmod3 = 1, A p = 39829.

[0037] When pmod3 = 2, A p = 39839.

[0038] D = 65537.

[0039] i = 0, …, L-1.

[0040] N CCE，p is the total number of CCEs.

[0041] n CI is the carrier index, when cross-carrier scheduling is not enabled, n CI = 0; for the common search space, n CI = 0; for the UE-specific search space, n CI is signaled by configuration.

[0042] is the maximum number of candidate positions corresponding to the aggregation level L,

[0043] n RNTI is a cell radio network temporary identifier (C-RNTI) of the UE in the cell.

[0044] In NR, one or more CORESET IDs can be configured in one BWP, and a CORESET is a set of physical resources in a specific area of a downlink resource grid, used to carry PDCCH (or DCI). It is semi-statically configured by high-layer signaling, and can appear at any location in a slot in the time domain and within the BWP in the frequency domain. One CORESET can be associated with one or more search space IDs.

[0045] In the existing related art, for the same UE, when the number of CCEs contained in the search space is the same, the starting positions of all search spaces on the same slot (search spaces on different BWPs, search spaces on different carriers, search spaces on different OFDM symbols within a slot) are the same.

[0046] In one slot of NR, the base station can configure multiple search spaces, each of which is independently configured with corresponding parameters, and the search space is shared by multiple UEs. Different UEs determine their own CCE positions for detection according to the above formula, and since the starting positions of the dedicated search spaces of the UEs are all determined by , when two UEs are in the same slot at the same time, this causes the search spaces of the two UEs to be completely overlapped, which causes the two UEs to completely block each other, that is, when one UE transmits PDCCH, even if there are idle CCEs in other positions in the entire search space, the other UE cannot select other idle CCEs due to the limitation of the starting candidate position, thereby reducing the CCE usage efficiency and increasing the PDCCH blocking rate.

[0047] Similarly, as a brand-new system, 6G needs to be researched and solved on how the base station transmits downlink control information and how the terminal detects the downlink control information under the system. In 6G, one or more UE-specific search spaces can be configured in one slot, and multiple BWPs or multiple carriers can also be configured, and the blocking problem caused by the same position of these search spaces also needs to be avoided.

[0048] In summary, how to detect the physical downlink control channel has become a technical problem to be solved.

[0049] To solve the above technical problems, the embodiment of the present disclosure provides a method for detecting a physical downlink control channel, which is applied to a scenario in which a terminal detects a physical downlink control channel. The physical downlink control channel is detected and transmitted based on the identification of a dedicated search space of a communication device and / or the identification of a bandwidth part, so that the same time slot can be fully utilized by other idle CCEs, the starting positions of the UE dedicated search spaces of different BWP in the entire search space are different, and thus the overlap between different communication devices in each search space is avoided, the CCE use efficiency is improved, and the PDCCH blocking rate is reduced.

[0050] The network architecture of the mobile communication network (including but not limited to 2G, 3G, 4G, 5G and future mobile communication networks (such as 5th generation mobile communication technology Advanced (5G-A), 6th generation mobile communication technology (6G)) in the embodiment of the present disclosure can at least include a first communication device and a second communication device. It should be understood that in the present example, the first communication device can be a terminal side device (including but not limited to a terminal) in the uplink, and the second communication device can be a network (NW) side device (including but not limited to a base station). Of course, in the downlink, the first communication device can also be a network side device, and the second communication device can also be a terminal side device. In device-to-device communication, the first communication device and the second communication device can both be a base station or a terminal. The first communication device and the second communication device can be referred to as the first device and the second device, respectively.

[0051] Exemplarily, as shown in FIG. 1, a schematic diagram of a communication system provided by the embodiment of the present disclosure is provided, which can include a first communication device 101 and a second communication device 102.

[0052] Here, the second communication device 102 can transmit a plurality of PDCCHs on the time-frequency resources indicated by the CORESET according to the identification of the search space and / or the identification of the bandwidth part configured for the first communication device 101.

[0053] The first communication device 101 can determine the position of the candidate PDCCH from the search space of the PDCCH according to the identification of the search space and / or the identification of the bandwidth part configured for the second communication device 102, and detect the plurality of PDCCHs transmitted by the second communication device 102 at the position of the candidate PDCCH.

[0054] It should be noted that in the embodiments of the present disclosure, the first communication device can be a user equipment, and the second communication device can be a radio access network device (such as a base station).

[0055] A user equipment (UE) can be a device with wireless transceiver function. The user equipment can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. The embodiments of the present disclosure do not limit the application scenarios. The terminal can also be referred to as a user, a terminal, an artificial intelligence of things (A-IoT) device, an access terminal, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a transmitter, a remote terminal, a mobile device, a UE terminal, a wireless communication device, a UE agent or a UE apparatus, etc. The embodiments of the present disclosure do not limit this.

[0056] A base station (BS) can be a base station or evolved node B (eNB or eNodeB) in LTE, long term evolution advanced (LTE A), a base station device (gNB) in a 5G network, or a base station in a future communication system, etc. The base station can include various macro base stations, micro base stations, home base stations, wireless remote, reconfigurable intelligent surfaces (RISs), routers, relay stations, transmission and reception points (TRPs), receivers, access points, wireless fidelity (WIFI) devices, etc. Various network side devices. The base station can also be referred to as a reader for communication with the terminal.

[0057] It should be noted that FIG. 1 is only an exemplary framework diagram, the number of devices included in FIG. 1, and the name of each device is not limited, and in addition to the devices shown in FIG. 1, the communication system can also include other devices, such as core network components.

[0058] The application scenarios of the embodiments of the present disclosure are not limited. The system architecture and business scenarios described in the embodiments of the present disclosure are used to more clearly illustrate the technical solutions of the embodiments of the present disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. Those skilled in the art can know that with the evolution of network architecture and the appearance of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

[0059] FIG. 2 shows a flowchart of a physical downlink control channel detection method. As shown in FIG. 2, the physical downlink control channel detection method is applied to a first communication device, and includes S201 and S202.

[0060] In S201, the position of a candidate physical downlink control channel is determined from a search space of a physical downlink control channel based on an identification of the search space and / or an identification of a bandwidth part.

[0061] Here, the first communication device can determine a CCE index from a search space of a PDCCH based on an identification of the search space and / or an identification of a bandwidth part, and then determine the position of a candidate physical downlink control channel based on the CCE index.

[0062] Exemplarily, a UE is configured with one CORESET, which covers 10 PRBs and 3 orthogonal frequency-division multiplexing (OFDM) symbols. Within this CORESET, there is a common search space and a UE-specific search space. For the case of aggregation level 4, the UE-specific search space defines 4 starting CCE indices, and then the UE can determine a candidate PDCCH consisting of 4 CCEs at these 4 indices.

[0063] In some embodiments, the first communication device can modify any adjustable parameter in Formula One based on the identification id of the search space and / or the identification b of the bandwidth part, and substitute the modified adjustable parameter into Formula One to calculate the CCE index and determine the position of the candidate physical downlink control channel.

[0064] It should be noted that the embodiments of the present disclosure do not limit the adjustable parameters in Formula One. For example, the adjustable parameter in Formula One can be a position offset parameter For another example, the adjustable parameter in Formula One can be a candidate index For example, the adjustable parameter in Formula One can be the carrier index n CI For example, the adjustable parameter in Formula One can be the first parameter A p .

[0065] For example, the first communication device can correct the position offset parameter and / or the candidate index in Formula One based on the identification id of the search space and / or the identification b of the bandwidth part, and substitute the corrected position offset parameter and / or the candidate index into Formula One to calculate the CCE index and determine the position of the candidate physical downlink control channel.

[0066] It should be noted that in the embodiments of the present disclosure, the corrected position offset parameter determined based on the identification id of the search space can be the position offset parameter The corrected position offset parameter determined based on the identification b of the bandwidth part can be the position offset parameter The corrected position offset parameter determined based on the identification id of the search space and the identification b of the bandwidth part can be the position offset parameter

[0067] Similarly, in the embodiments of the present disclosure, the corrected candidate index determined based on the identification id of the search space can be the candidate index The corrected candidate index determined based on the identification b of the bandwidth part can be the candidate index The corrected candidate index determined based on the identification id of the search space and the identification b of the bandwidth part can be the candidate index

[0068] Here, the uncorrected initial candidate index can be referred to as a second candidate control channel index, and the corrected candidate index (such as the candidate index ) can be referred to as a first candidate control channel index.

[0069] In other embodiments, the first communication device can add a compensation coefficient (such as a third parameter offset) to Formula One based on the identification of the search space and / or the identification of the bandwidth part, and calculate the CCE index using Formula One after adding the third parameter offset to determine the position of the candidate physical downlink control channel. Here, the third parameter offset is used to correct the position offset parameter.

[0070] It should be noted that the position of adding the third parameter offset in the above formula one is not limited, as shown in the following formula two, formula three and formula four.

[0071] Here, when the carrier index n CI configured by the second communication device for the dedicated search space of the first communication device is 0, n CI in the above formula two, formula three and formula four can not exist.

[0072] It should be noted that the third parameter offset added in the above formula one based on the identification id of the search space can be the third parameter offset id ; the third parameter offset added in the above formula one based on the identification b of the bandwidth part can be the third parameter offset b ; the third parameter offset added in the above formula one based on the identification id of the search space and the identification b of the bandwidth part can be the third parameter offset id，b .

[0073] In S202, the detection of the physical downlink control channel is performed on the position of the candidate physical downlink control channel.

[0074] In some embodiments, the first communication device can perform blind detection on all candidate physical downlink control channels at the position of the candidate physical downlink control channel until the target PDCCH configured for the first communication device is determined.

[0075] Exemplarily, the UE tries to decode the multiple candidate PDCCHs indicated by the four starting CCE indexes of the search space one by one until the target PDCCH that can be successfully decoded is obtained.

[0076] It can be understood that, based on the identification of the dedicated search space of the communication device and / or the identification of the bandwidth part, the detection of the physical downlink control channel can utilize other idle CCEs on the same time slot, realize that the starting positions of the UE dedicated search spaces of different BWPs are different in the entire search space, and further avoid the overlap between the search spaces of different communication devices, improve the CCE utilization efficiency, and reduce the PDCCH blocking rate.

[0077] In some embodiments, the position of the candidate physical downlink control channel is determined at least according to a position offset parameter, and the position offset parameter can be determined according to the identification of the search space and / or the identification of the bandwidth part.

[0078] Here, the position offset parameter determined by the identification id of the search space can be the position offset parameter The position offset parameter determined by the identifier b based on the bandwidth portion can be a position offset parameter.

[0079] For example, the position offset parameter determined by the identifier id of the search space For example, the starting CCE index corresponding to the position of the candidate physical downlink control channel can be calculated using the following formula five or formula six:

[0080] Here, the carrier index n configured by the second communication device for the dedicated search space of the first communication device via signaling... CI When the value is not 0, the CCE index can be calculated using Formula 5; while the carrier index n configured by the second communication device for the proprietary search space of the first communication device via signaling. CI When the value is 0, the CCE index can be calculated using formula six.

[0081] In some embodiments, time slot n s The position offset parameter of the upper search space identifier ID (i.e., the identifier ID of the search space). It is based on time slot n s -1 is the position offset parameter of the search space identifier ID (i.e., the ID of the search space). Generate the initial value Y of the position offset parameter for each search space. p，-1，id Generate independently.

[0082] For example, position offset parameter As shown in Formula 7 below, the position offset parameter Y p,-1,id It can be calculated using any one of the following formulas: Formula 8, Formula 9, or Formula 10. Y p,-1,id =id+n RNTI ≠0 Formula 8. Y p,-1,id =id*2 k +n RNTI ≠0 Formula Nine. Y p,-1,id =id+n RNTI *2 h ≠0 Formula 10.

[0083] Here, k and h are positive integers, such as k being 16, 24, or 32, and h being 2, 3, 4, 5, or 6.

[0084] In other embodiments, time slot n s Position offset parameter of the search space identifier id It is based on time slot n s The position offset parameter of the upper search space identifier id-1 Generation; time slot n sPosition offset parameter of upper search space identifier 0 According to time slot n s -1 is the position offset parameter of the search space identifier 0. Generate, and each search space uses the same initial value Y. p,-1,0 .

[0085] For example, when the search space identifier id is greater than 0, It can be calculated using the following formula eleven; when the search space identifier id equals 0, It can be calculated using the following formula twelve.

[0086] Here, Y p，-1，0 =n RNTI ≠0.

[0087] In other embodiments, time slot n s Position offset parameter of the search space identifier id It is based on time slot h s Position offset parameter of upper search space identifier 0 Generate; search for the position offset parameter Y of spatial identifier 0 in time slot 0. p，-1，0 Generated based on the terminal's temporary cell identifier.

[0088] Here, time slot h s For time slot n s Any time slot other than h, or time slot h s For time slot n s (i.e. h) s It can be equal to or not equal to n s For example, h s =n s -1+id). Slot 0 is the first slot among multiple slots, and search space identifier 0 is the identifier of the first search space on slot hs.

[0089] For example, position offset parameter As shown in Formula Thirteen or Formula Fourteen below.

[0090] Here, Y p，-1，0 =n RNTI ≠0, w is a positive integer, such as 10, 20 or 40, etc.

[0091] For example, in time slot n s The starting position of the UE-specific search space with the search space identifier ID is or, Here, Y p，-1 =n RNTI≠0, w is a positive integer, such as 10, 20, or 40. UE will... Substituting into Formula 1 above, it is also possible to achieve this in time slot n. s Different search space identifiers (id) have independent starting value definitions.

[0092] For example, as shown in Formula Fifteen or Formula Sixteen below:

[0093] Here, at carrier index n CI When the value is not 0, the CCE index can be calculated using formula 15; while the carrier index n CI When the value is 0, the CCE index can be calculated using formula sixteen. or

[0094] It is understandable that, for the same UE, within the same time slot, each UE has its own dedicated search space starting position. They are generated independently, without using the same values, or, for the same UE, each UE has its own dedicated search space with a separately configured offset or a separately defined offset in the same time slot.

[0095] Similarly, the position offset parameter is determined by the identifier b of the bandwidth portion. For example, the starting CCE index corresponding to the position of the candidate physical downlink control channel can be calculated using the following formula 17 or formula 18:

[0096] Here, the carrier index n configured by the second communication device for the dedicated search space of the first communication device via signaling... CI When the value is not 0, the CCE index can be calculated using Formula 17; while the carrier index n configured by the second communication device for the proprietary search space of the first communication device via signaling. CI When the value is 0, the CCE index can be calculated using formula 18.

[0097] In some embodiments, time slot n in partial bandwidth identifier b (i.e., identifier b of the bandwidth portion) s Position offset parameters in the upper search space It is based on the time slot n in the partial bandwidth identifier b. s -1 Position offset parameter in the search space Generate the initial value Y of the position offset parameter for each search space. p，-1，b Generate independently.

[0098] For example, position offset parameter As shown in Formula 19 below, the position offset parameter Y... p，-1，bIt can be calculated using any one of the following formulas: Formula 20, Formula 21, and Formula 22. Y p，-1，b =i+n RNTI ≠0 Formula 20. Y p,-1,b =id*2 k +n RNTI Formula 21 ≠ 0. Y p，-1，b =id+n RNTI *2 h Formula 22 ≠ 0

[0099] Here, k and h are positive integers, such as k being 16, 24, or 32, and h being 2, 3, 4, 5, or 6.

[0100] In other embodiments, time slot n in partial bandwidth identifier b s Position offset parameters in the upper search space It is based on time slot n in partial bandwidth identifier b-1 s Position offset parameters in the upper search space Generation; partial bandwidth identifier 0 in time slot n s Position offset parameters in the upper search space Based on the bandwidth identifier 0, time slot n s -1 Position offset parameter in the search space Generate, and each search space uses the same initial value Y. p,-1,0 .

[0101] For example, when the partial bandwidth identifier b is greater than 0, The following formula (23) can be used for calculation; when the partial bandwidth identifier b equals 0. It can be calculated using the following formula 24.

[0102] Here, Y p,-1,0 =n RNTI ≠0.

[0103] In other embodiments, time slot n in partial bandwidth identifier b s Position offset parameters in the upper search space It is based on the time slot h in partial bandwidth identifier 0 s Position offset parameters in the upper search space Generate; position offset parameter Y of the search space on slot 0 in partial bandwidth identifier 0. p,-1,0 Generated based on the terminal's temporary cell identifier.

[0104] Here, time slot h s For time slot n s Any time slot other than h, or time slot hs For time slot n s (i.e. h) s It can be equal to or not equal to n s The search space identifier 0 represents time slot h. s The identifier of the first search space.

[0105] For example, position offset parameter As shown in Formula 25 or Formula 26 below.

[0106] Here, Y p,-1,0 =n RNTI ≠0, w is a positive integer, such as 10, 20 or 40, etc.

[0107] For example, in time slot n s The starting position of the UE-specific search space for the upper bandwidth identifier b is or, Here, Y p,-1 =n RNTI ≠0, w is a positive integer, such as 10, 20, or 40. UE will... Substituting into Formula 1 above, it is also possible to achieve this in time slot n. s Different search space identifiers (id) have independent starting value definitions (as in Formula 15 or Formula 16 above).

[0108] It is understandable that there can be multiple BWPs in a carrier or a cell, and the search space identifier of each BWP is configured independently. Therefore, in order to achieve that the UE-specific search space of different BWPs has a different starting position in the entire search space on the same time slot, the starting position of the UE-specific search space can be defined for each BWP.

[0109] In some embodiments, the location of the candidate physical downlink control channel is determined at least based on a third parameter offset, which can be determined based on the identifier of the search space and / or the identifier of the bandwidth portion.

[0110] Here, the third parameter offset is generated based at least on the identifier of the search space and / or the identifier of a portion of the bandwidth.

[0111] In this embodiment of the disclosure, the third parameter offset generated based on the identifier id of the search space can be the third parameter offset. id The third parameter offset generated based on the identifier b of the bandwidth portion can be the third parameter offset. b The third parameter offset generated based on the search space identifier id and the bandwidth identifier b can be the third parameter offset. id,b .

[0112] In some embodiments, the third parameter offset can be generated based on the identifier of the search space and / or the identifier of a portion of the bandwidth, as well as the first adjustment parameter corresponding to the identifier of the search space and / or the second adjustment parameter corresponding to the identifier of the portion of the bandwidth.

[0113] Here, the first adjustment parameter and / or the second adjustment parameter is any one of the following: maximum number of carriers, signaling configuration parameters, or predefined parameters.

[0114] For example, the third parameter offset is generated based on the identifier id of the search space. id For example, the search space identifier id is based on the starting position offset of a specific search space (e.g., the search space with identifier id = 0), and the third parameter offset. id The relative starting value of the corresponding search space ID (i.e., the starting CCE index) can be shown in Formula 27 or Formula 28 below.

[0115] It should be noted that, in this embodiment of the disclosure, the third parameter offset is generated from the identifier id of the search space. id The method is not limited. For example, the third parameter offset id It can be an identifier (id) for the search space. Another example is the third parameter, offset. id It can be the product of the identifier id of the search space and the first adjustment parameter D. Another example is the third parameter offset. id It can be the difference between the identifier id of the search space and the first adjustment parameter D.

[0116] For example, the starting CCE index can be any one of the following formulas: Formula 29, Formula 30, Formula 31, and Formula 32:

[0117] Here, the first adjustment parameter D is a positive integer, such as the maximum number of carriers configured, or a predefined value (i.e., a predefined parameter), or a signaling configuration value (i.e., a signaling configuration parameter).

[0118] Similarly, the third parameter offset is generated based on the identifier b of the bandwidth portion. b For example, the identifier b of the bandwidth portion is offset from the starting position of a specific search space (e.g., the search space where identifier b is 0), and the third parameter offset b The relative starting value (i.e., the starting CCE index) of the identifier b corresponding to the bandwidth portion can be shown in Formula 33 or Formula 34 below.

[0119] It should be noted that, in this embodiment of the disclosure, the third parameter offset is generated from the identifier b of the bandwidth portion. b The method is not limited. For example, the third parameter offset b This could be the identifier 'b' for the bandwidth portion. For example, the third parameter, offset. b This can be the product of the bandwidth identifier b and the second adjustment parameter J4. Another example is the third parameter offset. b It can be the difference between the identifier b of the bandwidth portion and the second adjustment parameter J4.

[0120] For example, the identifier b in the bandwidth section also corresponds to a second adjustment parameter J5, which is used to further correct the carrier index.

[0121] Here, the second adjustment parameter J4 and the second adjustment parameter J5 are positive integers greater than or equal to 0, such as: the maximum number of configured carriers, or a predefined value, or a signaling configuration value.

[0122] For example, the starting CCE index determined based on the identifier b of the bandwidth portion, the second adjustment parameter J4, and the second adjustment parameter J5 is as follows: Formula 35, Formula 36, ​​and Formula 37:

[0123] Here, Formula 36 is the formula for calculating the initial CCE index when both the second adjustment parameter J4 and the second adjustment parameter J5 are 1. Formula 36 is the formula for calculating the initial CCE index when the second adjustment parameter J4 is 1 and the second adjustment parameter J5 is 0.

[0124] In some embodiments, the location of the candidate physical downlink control channel is determined at least based on a first candidate control channel index, which is determined based on a second candidate control channel index and a fourth parameter.

[0125] Here, the fourth parameter is generated based at least on the identifier of the search space and / or the identifier of a portion of the bandwidth. The fourth parameter is any one of the following: signaling configuration parameters or predefined parameters.

[0126] It should be noted that the first candidate control channel index determined based on the fourth parameter generated from the identifier id of the search space can be the first candidate control channel index. The first candidate control channel index, determined based on the fourth parameter generated from the identifier b of the bandwidth portion, can be the first candidate control channel index. The first candidate control channel index, determined based on the fourth parameter generated from the identifier id of the search space and the identifier b of the bandwidth portion, can be used as the first candidate control channel index.

[0127] In some embodiments, the fourth parameter of the search space identifier id is determined based on the search space identifier id and the maximum number of candidate positions, where the maximum number of candidate positions is the maximum number of candidate positions corresponding to the aggregation level L of the search space identifier id.

[0128] It should be noted that, taking the fourth parameter of the search space identifier id as an example, the index of the first candidate control channel can be the corrected one. (or The second candidate control channel index can be used to determine... parameters

[0129] For example, taking the search space identifier as s, the first candidate control channel index (or It can be shown as any one of the following formulas: Formula 38, Formula 39, and Formula 40.

[0130] here, Q is a positive integer. and The fourth parameter is generated based on the search space identifier ID through different methods. This value, associated with the search space identifier, can be predefined or configured via signaling. Second candidate control channel index. The value ranges from 0 to

[0131] It should be noted that the first candidate control channel index is determined by any one of formulas 38, 39, and 40. The CCE index can be calculated by substituting the above formulas 1-6, 15-18, and 27-37.

[0132] It is understandable that candidate positions in different search spaces are numbered starting from 0. Therefore, if the overall search space size is the same, for the same UE, in the same time slot, for the same candidate position index at the same aggregation level, the positions in different UE-specific search spaces are the same. Therefore, embodiments of this disclosure can concatenate the same candidate position indices at the same aggregation level in different UE-specific search spaces (e.g., sequential concatenation, interval concatenation, etc.), thereby ensuring that, in the same time slot, for the same candidate position index at the same aggregation level, the corresponding CCE position indices in different UE-specific search spaces will also be different.

[0133] In other embodiments, the fourth parameter of the partial bandwidth identifier b is determined based on the partial bandwidth identifier b and the maximum number of candidate locations, where the maximum number of candidate locations is the maximum number of candidate locations corresponding to the aggregation level L of the partial bandwidth identifier b.

[0134] It should be noted that, taking the fourth parameter of partial bandwidth identifier b as an example, the first candidate control channel index can be the corrected one. The second candidate control channel index can be the uncorrected original index.

[0135] For example, taking partial bandwidth identifier b as b, the first candidate control channel index It can be shown as any one of the following formulas 41, 42, and 43.

[0136] here, Q is a positive integer. and offset b The fourth parameter, offset, is generated using different methods based on the partial bandwidth identifier b. id This value can be predefined or configured via signaling to represent the offset associated with a portion of the bandwidth identifier.

[0137] It should be noted that the first candidate control channel index is determined by any one of formulas 41, 42, and 43. Formulas 1-6, 15-18, and 27-37 can be substituted into the above formulas. To calculate the CCE index.

[0138] It is understandable that concatenating the same candidate location indices of the same aggregation level in the UE-specific search space of a UE on different BWPs will result in different CCE location indices in the UE-specific search space of different BWPs for the same candidate location index at the same aggregation level in the same time slot.

[0139] In some embodiments, the position offset parameter is based on the first parameter A. p It is certain that the first parameter A p It is determined based on the remainder of the second parameter and the first constant, and the second parameter can be determined based on at least one of the identifier of the search space and the identifier of the partial bandwidth.

[0140] For example, the second parameter is shown in the following formula forty-four: Y = b*y1 + p*y2 + id*y3 Formula forty-four.

[0141] Here, y1, y2, and y3 are positive integers greater than or equal to 0, p is the CORRSET index, and b and id are defined as above.

[0142] When Y mod 3 = 0, A p =39827, when Y mod 3 = 1, A p =39829, when Y mod 3 = 2, A p =39839.

[0143] In summary, the embodiments of this disclosure can combine the use of different starting positions of different search spaces in the same time slot and different starting positions of search spaces of different BWPs.

[0144] In some embodiments, the location of the candidate physical downlink control channel is determined at least based on a location offset parameter, which can be determined based on the identifier of the search space and the identifier of the bandwidth portion.

[0145] Here, the position offset parameter determined based on the identifier id of the search space and the identifier b of the bandwidth portion can be the position offset parameter.

[0146] For example, the starting CCE index can be calculated using the following formula 45 or formula 46:

[0147] Here, the carrier index n configured by the second communication device for the dedicated search space of the first communication device via signaling... CI When the value is not 0, the CCE index can be calculated using formula 45; while the carrier index n configured by the second communication device for the proprietary search space of the first communication device via signaling. CI When the value is 0, the CCE index can be calculated using formula 46.

[0148] In some embodiments, time slot n in partial bandwidth identifier b s Position offset parameter of the search space identifier id It is based on the time slot n in the partial bandwidth identifier b. s -1 is the position offset parameter of the search space identifier id. Generate; Search for the position offset parameter Y of the spatial identifier id in slot 0 of partial bandwidth identifier b. p，-1，b，id It is generated based on the partial bandwidth identifier b, the search space identifier id, and the terminal's temporary cell identifier.

[0149] For example, position offset parameter As shown in Formula 47 below, the position offset parameter Y p,-1,b,id It can be calculated using any one of the following formulas: Formula 48, Formula 49, and Formula 50. Y p,-1,b,id =id+b+n RNTI ≠0 formula forty-eight. Y p,-1,b,id =b*2 k1 +id*2 k2 +n RNTI ≠0 formula forty-nine. Y p，-1，b，id =b + id * 2 k +n RNTI *2 h ≠0 formula fifty.

[0150] Here, k, k1, k2 and h are positive integers, such as k1 being 16 or 21 or 24 or 29 or 32 or 37, h being 2 or 3 or 4 or 5 or 6, and k being 1 or 2 or 3 or 4 or 5.

[0151] In other embodiments, time slot n in partial bandwidth identifier b s Position offset parameter of the search space identifier id It is based on time slot n in partial bandwidth identifier b-1 s Position offset parameter of the search space identifier id Generation; partial bandwidth identifier 0 in time slot n s Position offset parameter of upper search space identifier 0 Based on the bandwidth identifier 0, time slot n s -1 is the position offset parameter of the search space identifier 0. generate.

[0152] Alternatively, in the bandwidth identifier b, slot n s Position offset parameter of the search space identifier id It is based on the time slot n in the partial bandwidth identifier b. s The position offset parameter of the upper search space identifier id-1 Generation; partial bandwidth identifier 0 in time slot n s Position offset parameter of upper search space identifier 0 Based on the bandwidth identifier 0, time slot n s -1 is the position offset parameter of the search space identifier 0. generate.

[0153] For example, when the partial bandwidth identifier b is greater than 0, It can be calculated using the following formula: When the search space identifier id is greater than 0, The following formula can be used for calculation; when the partial bandwidth identifier b equals 0 and the search space identifier id equals 0. It can be calculated using the following formula 53.

[0154] Here, Y p,-1,0,0 =n RNTI ≠0.

[0155] In other embodiments, time slot n in partial bandwidth identifier b s Position offset parameter of the search space identifier id It is based on the time slot h in partial bandwidth identifier 0 s Position offset parameter of upper search space identifier 0 Generate; Search for the position offset parameter Y of spatial identifier 0 in time slot 0 within partial bandwidth identifier 0. p，-1，0，0 Generated based on the terminal's temporary cell identifier.

[0156] Here, time slot h s It is based on time slot n s The identifiers of the search space and partial bandwidth are determined, for example, h. s =n s -1+t2*id+t1*b).

[0157] For example, position offset parameter As shown in Formula 54 or Formula 55 below.

[0158] Here, Y p，-1，0，0 =n RNTI ≠0, w is a positive integer, such as 10, 20 or 40, t2 and t1 are positive integers, which can be located in predefined values ​​or signaling configurations, or, respectively, correspond to the maximum number of search space IDs and the maximum number of BWPs.

[0159] For example, when t2 and t1 are 1, the position offset parameter As shown in formula 56 or formula 57 below:

[0160] In some embodiments, the location of a candidate physical downlink control channel can be determined based on at least two of the following: a location offset parameter, a third parameter offset, and a first candidate control channel index.

[0161] Here, the position offset parameter is determined based on the identifier of the search space and / or the identifier of a portion of the bandwidth, the third parameter offset is used to correct the position offset parameter, and the first candidate control channel index is determined based on the second candidate control channel index and the fourth parameter.

[0162] For example, the search space identifier id of partial bandwidth identifier b is offset from the starting position of a specific search space (e.g., the search space identifier id of partial bandwidth identifier b is 0). The third parameter offset b，id The relative starting value (i.e., the starting CCE index) of the corresponding bandwidth identifier b can be shown in Formula 58 or Formula 59 below:

[0163] It should be noted that, in this embodiment of the disclosure, the third parameter offset is generated from the search space identifier id of a portion of the bandwidth identifier b. b,id The method is not limited. For example, offset b,id =J1*b+J2*id.

[0164] Furthermore, embodiments of this disclosure can also index the carrier n using a preset coefficient J3. CI Make corrections.

[0165] For example, offset b,id Substituting J1*b+J2*id and the preset coefficient J2 into the above formula 58, we can obtain the following formula 60:

[0166] Here, J1, J2, and J3 are positive integers greater than or equal to 0.

[0167] When J1, J2, and J3 are all 1, the starting CCE index can be represented as shown in Formula 61 below:

[0168] When J1 and J2 are 1 and J3 is 0, the starting CCE index can be represented as shown in Formula 62 below:

[0169] In some embodiments, any one of the position offset parameter, the third parameter offset, and the first candidate control channel index can be determined by the search space identifier id or the partial bandwidth identifier b.

[0170] In some embodiments, the location offset parameter is determined by the search space identifier id. The third parameter offset, determined by the partial bandwidth identifier b. b The starting CCE index can be determined as shown in Formula 63 below:

[0171] In other embodiments, the third parameter offset is determined by the search space identifier id. id The location offset parameter determined by the partial bandwidth identifier b The starting CCE index can be determined as shown in Formula 64 below:

[0172] Similarly, the position offset parameter determined by the search space identifier id and the third parameter offset id The starting CCE index can be determined as shown in Formula 65 below; the position offset parameter determined by part bandwidth identifier b. and the third parameter offset b The starting CCE index can be determined as shown in Formula 66 below:

[0173] In some embodiments, the first candidate control channel index is determined by the search space identifier id. The third parameter offset, determined by the partial bandwidth identifier b. b The starting CCE index can be determined as shown in Formula 67 below:

[0174] In other embodiments, the third parameter offset is determined by the search space identifier id. id The first candidate control channel index determined by partial bandwidth identifier b The starting CCE index can be determined as shown in Formula 68 below:

[0175] Similarly, the first candidate control channel index is determined by the search space identifier id. and the third parameter offset id The starting CCE index can be determined as shown in Formula 69 below; the first candidate control channel index is determined by the partial bandwidth identifier b. and the third parameter offset b The starting CCE index can be determined as shown in the following formula (Formula 70):

[0176] In some embodiments, the location offset parameter is determined by the search space identifier id. The first candidate control channel index determined by partial bandwidth identifier b The starting CCE index can be determined as shown in Formula 71 below:

[0177] In other embodiments, the first candidate control channel index is determined by the search space identifier id. The location offset parameter determined by the partial bandwidth identifier b The starting CCE index can be determined as shown in Formula 72 below:

[0178] Similarly, the position offset parameter determined by the search space identifier id and the first candidate control channel index The starting CCE index can be determined as shown in Formula 73 below; the position offset parameter determined by part bandwidth identifier b is used. and the first candidate control channel index The starting CCE index can be determined as shown in Formula 74 below:

[0179] It should be noted that the search space ID and BWP identifier in the above embodiments are mainly identifiers of multiple UE-specific search spaces in the same time slot.

[0180] The identifier of a search space (i.e., the search space ID) can be a search space ID associated with a CORESET, or it can be the cascaded ID of search space IDs from multiple CORESET IDs in a BWP.

[0181] The identifier of the bandwidth portion (i.e., the bandwidth portion identifier b) can be an index of the BWP or an identifier of the CORESET within a BWP, such as the CORESET id. In other words, b can also be used to represent the identifier of the CORESET in all the above formulas, thereby realizing that different CORESET ids correspond to different b values ​​in an implementation, thus generating their own UE-specific search spaces.

[0182] It should be noted that all parameters in the above formulas or or In this context, 's' represents the search space identifier, which is the same as the search space id mentioned in this article. 's' can be replaced with 'id'.

[0183] Furthermore, in 6G, the aforementioned search space ID, carrier index, BWP identifier, and CORESET ID can reuse the definitions from 5G or be redefined. The carrier index is replaced by the BWP index. When cross-carrier scheduling is not enabled, the UE-specific search space location is also generated based on the carrier index or the BWP index.

[0184] This disclosure also provides a method for transmitting a physical downlink control channel, applied to a second communication device, as shown in FIG3. The method for transmitting a physical downlink control channel may include S301 and S302.

[0185] In S301, the location of a candidate physical downlink control channel is determined from the search space of the physical downlink control channel based on the identifier of the search space and / or the identifier of the bandwidth portion.

[0186] Here, the identifiers for the search space and the bandwidth portion are identifiers configured by the second communication device for the first communication device for PDCCH detection.

[0187] It should be noted that the description of how the second communication device determines the location of the candidate physical downlink control channel from the search space of the physical downlink control channel based on the identifier and / or the identifier of the bandwidth portion of the search space can be found in the above embodiments, and will not be repeated here.

[0188] In S302, the physical downlink control channel is transmitted at the location of the candidate physical downlink control channel.

[0189] In some embodiments, the second communication device may send a PDCCH at a location configured for the first communication device as a candidate PDCCH, so that the first communication device may detect the PDCCH from the second communication device at the location of the candidate PDCCH.

[0190] It is understandable that transmitting the physical downlink control channel based on the identifier of the dedicated search space and / or the identifier of the bandwidth portion of the communication device can make full use of other idle CCEs in the same time slot, so that the UE dedicated search space of different BWPs has different starting positions in the entire search space, thereby avoiding the overlap between different communication devices in each search space, improving CCE utilization efficiency, and reducing PDCCH blocking rate.

[0191] The following describes the physical downlink control channel detection method and physical downlink control channel transmission method (i.e., physical downlink control channel interaction method) provided in the above embodiment, taking the interaction between the first communication device and the second communication device as an example, as shown in Figure 4, including: S401-S404.

[0192] In S401, the second communication device determines the location of a candidate physical downlink control channel from the search space of the physical downlink control channel based on the identifier of the search space and / or the identifier of the bandwidth portion.

[0193] In S402, the second communication device transmits the physical downlink control channel at the location of the candidate physical downlink control channel.

[0194] In S403, the first communication device determines the location of a candidate physical downlink control channel from the search space of the physical downlink control channel based on the identifier of the search space and / or the identifier of the bandwidth portion.

[0195] In S404, the first communication device detects the physical downlink control channel at the location of the candidate physical downlink control channel.

[0196] It is understood that the physical downlink control channel detection device and the physical downlink control channel transmission device, in order to achieve the above functions, include hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should readily recognize that, based on the algorithm steps of the various examples described in conjunction with the embodiments of this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0197] This disclosure embodiment can divide the physical downlink control channel detection device and the physical downlink control channel transmission device into functional modules according to the above method embodiment. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one functional module. The integrated module can be implemented in hardware or software. It should be noted that the module division in this disclosure embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the example of dividing each function into a separate functional module.

[0198] Figure 5 is a block diagram of a communication device according to some embodiments. The communication device can be applied to a first communication device and execute the physical downlink control channel detection method shown in Figure 2 above, as well as the embodiment on the first communication device side in Figure 4. As shown in Figure 5, the communication device 500 includes a processing module 501 and a receiving module 502.

[0199] Processing module 501 is used to determine the location of candidate physical downlink control channels from the search space of physical downlink control channels based on the identifier of the search space and / or the identifier of a portion of the bandwidth; receiving module 502 is used to detect physical downlink control channels at the locations of candidate physical downlink control channels.

[0200] In some embodiments, the location of the candidate physical downlink control channel is determined at least based on a location offset parameter, which is determined based on the identifier of the search space and / or the identifier of a portion of the bandwidth.

[0201] In some embodiments, time slot n s Position offset parameter of the search space identifier id It is based on time slot n s -1 is the position offset parameter of the search space identifier id. Generate the initial value Y of the position offset parameter for each search space. p,-1,id Generate independently.

[0202] In some embodiments, time slot n s Position offset parameter of the search space identifier id It is based on the position offset parameter of the spatial identifier id-1 on the time slot ns. Generation; time slot n s Position offset parameter of upper search space identifier 0 According to time slot n s -1 is the position offset parameter of the search space identifier 0. generate.

[0203] In some embodiments, time slot n s Position offset parameter of the search space identifier id It is based on time slot h s Position offset parameter of upper search space identifier 0 Generate; search for the position offset parameter Y of spatial identifier 0 in time slot 0. p，-1，0 Generated based on the terminal's temporary cell identifier.

[0204] In some embodiments, the position offset parameter is based on the first parameter A. p Confirmed, first parameter A p The second parameter is determined by taking the remainder of the second parameter and the first constant. The second parameter is determined based on at least one of the identifier of the search space and the identifier of the partial bandwidth.

[0205] In some embodiments, the location of the candidate physical downlink control channel is determined at least according to a third parameter offset, which is used to correct the location offset parameter.

[0206] In some embodiments, the third parameter offset is generated at least based on the identifier of the search space and / or the identifier of a portion of the bandwidth.

[0207] In some embodiments, the third parameter offset is generated based on the identifier of the search space and / or the identifier of a portion of the bandwidth, as well as the first adjustment parameter corresponding to the identifier of the search space and / or the second adjustment parameter corresponding to the identifier of the portion of the bandwidth. The first adjustment parameter and / or the second adjustment parameter are any of the following: maximum number of carriers, signaling configuration parameters, and predefined parameters.

[0208] In some embodiments, time slot n in partial bandwidth identifier b s Position offset parameters in the upper search space It is based on the time slot n in the partial bandwidth identifier b. s -1 Position offset parameter in the search space Generate the initial value Y of the position offset parameter for each search space. p，-1，b Generate independently.

[0209] In some embodiments, time slot n in partial bandwidth identifier b s Position offset parameters in the upper search space It is based on time slot n in partial bandwidth identifier b-1 s Position offset parameters in the upper search space Generation; partial bandwidth identifier 0 in time slot n s Position offset parameters in the upper search space Based on the bandwidth identifier 0, time slot n s -1 Position offset parameter in the search space generate.

[0210] In some embodiments, time slot n in partial bandwidth identifier b s Position offset parameters in the upper search space It is based on the time slot h in partial bandwidth identifier 0 s Position offset parameters in the upper search space Generate; position offset parameter Y of the search space on slot 0 in partial bandwidth identifier 0. p，-1，0 Generated based on the terminal's temporary cell identifier.

[0211] In some embodiments, the location of the candidate physical downlink control channel is determined at least according to a first candidate control channel index, which is determined according to a second candidate control channel index and a fourth parameter.

[0212] In some embodiments, the fourth parameter of the search space identifier id is determined based on the search space identifier id and the maximum number of candidate positions, where the maximum number of candidate positions is the maximum number of candidate positions corresponding to the aggregation level L of the search space identifier id.

[0213] In some embodiments, the fourth parameter is determined based on the identifier of the search space and / or the identifier of a portion of the bandwidth.

[0214] In some embodiments, the fourth parameter is any one of the following: signaling configuration parameters, predefined parameters.

[0215] In some embodiments, time slot n in partial bandwidth identifier b s Position offset parameter of the search space identifier id It is based on the time slot n in the partial bandwidth identifier b. s -1 is the position offset parameter of the search space identifier id. Generate; Search for the position offset parameter Y of the spatial identifier id in slot 0 of partial bandwidth identifier b. p，-1，b，id It is generated based on the partial bandwidth identifier b, the search space identifier id, and the terminal's temporary cell identifier.

[0216] In some embodiments, time slot n in partial bandwidth identifier b s Position offset parameter of the search space identifier id It is based on time slot n in partial bandwidth identifier b-1 s Position offset parameter of the search space identifier id Generation; partial bandwidth identifier 0 in time slot n s Position offset parameter of upper search space identifier 0 Based on the bandwidth identifier 0, time slot n s -1 is the position offset parameter of the search space identifier 0. generate.

[0217] In some embodiments, time slot n in partial bandwidth identifier b s Position offset parameter of the search space identifier id It is based on the time slot n in the partial bandwidth identifier b. s The position offset parameter of the upper search space identifier id-1 Generation; partial bandwidth identifier 0 in time slot n s Position offset parameter of upper search space identifier 0 Based on the bandwidth identifier 0, time slot n s -1 is the position offset parameter of the search space identifier 0. generate.

[0218] In some embodiments, time slot n in partial bandwidth identifier b s Position offset parameter of the search space identifier id It is based on the time slot h in partial bandwidth identifier 0 s Position offset parameter of upper search space identifier 0 Generate; Search for the position offset parameter Y of spatial identifier 0 in time slot 0 within partial bandwidth identifier 0. p，-1，0，0 Generated based on the terminal's temporary cell identifier.

[0219] In some embodiments, time slot h s It is based on time slot n s The identification of the search space and the identification of a portion of the bandwidth are determined.

[0220] In some embodiments, the location of a candidate physical downlink control channel is determined based on at least two of the following: a location offset parameter, a third parameter offset, and a first candidate control channel index. The location offset parameter is determined based on the identifier of the search space and / or the identifier of a portion of the bandwidth. The third parameter offset is used to correct the location offset parameter. The first candidate control channel index is determined based on a second candidate control channel index and a fourth parameter.

[0221] Figure 6 is a block diagram of a communication device according to some embodiments. The communication device can be applied to a second communication device and executes the transmission method of the physical downlink control channel shown in Figure 3 above, as well as the embodiment on the second communication device side in Figure 4. As shown in Figure 6, the communication device 600 includes a processing module 601 and a transmission module 602.

[0222] Processing module 601 is used to determine the location of candidate physical downlink control channels from the search space of physical downlink control channels based on the identifier of the search space and / or the identifier of a portion of the bandwidth; transmitting module 602 is used to transmit physical downlink control channels at the locations of candidate physical downlink control channels.

[0223] In some embodiments, the location of the candidate physical downlink control channel is determined at least based on a location offset parameter, which is determined based on the identifier of the search space and / or the identifier of a portion of the bandwidth.

[0224] In some embodiments, time slot n s Position offset parameter of the search space identifier id It is based on time slot n s -1 is the position offset parameter of the search space identifier id. Generate the initial value Y of the position offset parameter for each search space. p，-1，id Generate independently.

[0225] In some embodiments, time slot n s Position offset parameter of the search space identifier id It is based on time slot n s The position offset parameter of the upper search space identifier id-1 Generation; time slot n s Position offset parameter of upper search space identifier 0 According to time slot n s -1 is the position offset parameter of the search space identifier 0. generate.

[0226] In some embodiments, time slot n s Position offset parameter of the search space identifier id It is based on time slot h s Position offset parameter of upper search space identifier 0 Generate; search for the position offset parameter Y of spatial identifier 0 in time slot 0. p，-1，0 Generated based on the terminal's temporary cell identifier.

[0227] In some embodiments, the position offset parameter is based on the first parameter A. p Confirmed, first parameter A pThe second parameter is determined by taking the remainder of the second parameter and the first constant. The second parameter is determined based on at least one of the identifier of the search space and the identifier of the partial bandwidth.

[0228] In some embodiments, the location of the candidate physical downlink control channel is determined at least according to a third parameter offset, which is used to correct the location offset parameter.

[0229] In some embodiments, the third parameter offset is generated at least based on the identifier of the search space and / or the identifier of a portion of the bandwidth.

[0230] In some embodiments, the third parameter offset is generated based on the identifier of the search space and / or the identifier of a portion of the bandwidth, as well as the first adjustment parameter corresponding to the identifier of the search space and / or the second adjustment parameter corresponding to the identifier of the portion of the bandwidth. The first adjustment parameter and / or the second adjustment parameter are any of the following: maximum number of carriers, signaling configuration parameters, and predefined parameters.

[0231] In some embodiments, time slot n in partial bandwidth identifier b s Position offset parameters in the upper search space It is based on the time slot n in the partial bandwidth identifier b. s -1 Position offset parameter in the search space Generate the initial value Y of the position offset parameter for each search space. p,-1,b Generate independently.

[0232] In some embodiments, time slot n in partial bandwidth identifier b s Position offset parameters in the upper search space It is based on time slot n in partial bandwidth identifier b-1 s Position offset parameters in the upper search space Generation; partial bandwidth identifier 0 in time slot n s Position offset parameters in the upper search space Based on the bandwidth identifier 0, time slot n s -1 Position offset parameter in the search space generate.

[0233] In some embodiments, time slot n in partial bandwidth identifier b s Position offset parameters in the upper search space It is based on the time slot h in partial bandwidth identifier 0 s Position offset parameters in the upper search space Generate; position offset parameter Y of the search space on slot 0 in partial bandwidth identifier 0. p，-1，0 Generated based on the terminal's temporary cell identifier.

[0234] In some embodiments, the location of the candidate physical downlink control channel is determined at least according to a first candidate control channel index, which is determined according to a second candidate control channel index and a fourth parameter.

[0235] In some embodiments, the fourth parameter of the search space identifier id is determined based on the search space identifier id and the maximum number of candidate positions, where the maximum number of candidate positions is the maximum number of candidate positions corresponding to the aggregation level L of the search space identifier id.

[0236] In some embodiments, the fourth parameter is determined based on the identifier of the search space and / or the identifier of a portion of the bandwidth.

[0237] In some embodiments, the fourth parameter is any one of the following: signaling configuration parameters, predefined parameters.

[0238] In some embodiments, time slot n in partial bandwidth identifier b s Position offset parameter of the search space identifier id It is based on the time slot n in the partial bandwidth identifier b. s -1 is the position offset parameter of the search space identifier id. Generate; search for the position offset parameter Y of the spatial identifier id in slot 0 of partial bandwidth identifier b. p,-1,b,id It is generated based on the partial bandwidth identifier b, the search space identifier id, and the terminal's temporary cell identifier.

[0239] In some embodiments, time slot n in partial bandwidth identifier b s Position offset parameter of the search space identifier id It is based on time slot n in partial bandwidth identifier b-1 s Position offset parameter of the search space identifier id Generation; partial bandwidth identifier 0 in time slot n s Position offset parameter of upper search space identifier 0 Based on the bandwidth identifier 0, time slot n s -1 is the position offset parameter of the search space identifier 0. generate.

[0240] In some embodiments, time slot n in partial bandwidth identifier b s Position offset parameter of the search space identifier id It is based on the time slot n in the partial bandwidth identifier b. s The position offset parameter of the upper search space identifier id-1 Generation; partial bandwidth identifier 0 in time slot n s Position offset parameter of upper search space identifier 0 Based on the bandwidth identifier 0, time slot ns -1 is the position offset parameter of the search space identifier 0. generate.

[0241] In some embodiments, time slot n in partial bandwidth identifier b s Position offset parameter of the search space identifier id It is based on the time slot h in partial bandwidth identifier 0 s Position offset parameter of upper search space identifier 0 Generate; Search for the position offset parameter Y of spatial identifier 0 in time slot 0 within partial bandwidth identifier 0. p,-1，0,0 Generated based on the terminal's temporary cell identifier.

[0242] In some embodiments, time slot h s It is based on time slot n s The identification of the search space and the identification of a portion of the bandwidth are determined.

[0243] In some embodiments, the location of a candidate physical downlink control channel is determined based on at least two of the following: a location offset parameter, a third parameter offset, and a first candidate control channel index. The location offset parameter is determined based on the identifier of the search space and / or the identifier of a portion of the bandwidth. The third parameter offset is used to correct the location offset parameter. The first candidate control channel index is determined based on a second candidate control channel index and a fourth parameter.

[0244] In implementing the functions of the integrated modules described above in hardware, this disclosure provides another structure for the communication device involved in the above embodiments. Figure 7 is a schematic diagram of the structure of a communication device 700 provided in this disclosure, which includes a processor 702 and a bus 704. In some embodiments, the communication device may further include a memory 701. In some embodiments, the communication device may further include a communication interface 703.

[0245] Processor 702 may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 702 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 702 may also be a combination of computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor (DSP), and a microprocessor, etc.

[0246] The communication interface 703 is used to connect with other devices via a communication network. This communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0247] The memory 701 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), magnetic disk storage medium or other magnetic storage device, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0248] In some embodiments, the memory 701 may exist independently of the processor 702. The memory 701 may be connected to the processor 702 via a bus 704 and may be used to store instructions or program code. When the processor 702 calls and executes the instructions or program code stored in the memory 701, it can implement the physical downlink control channel detection method and the physical downlink control channel transmission method provided in the embodiments of this disclosure.

[0249] In other embodiments, the memory 701 may also be integrated with the processor 702.

[0250] Bus 704 can be an extended industry standard architecture (EISA) bus, etc. Bus 704 can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in Figure 7, but this does not mean that there is only one bus or one type of bus.

[0251] Some embodiments of this disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium) storing computer program instructions that, when executed on a computer, cause the computer to perform the physical downlink control channel detection method and the physical downlink control channel transmission method as described in any of the above embodiments.

[0252] Exemplary examples show that the aforementioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROMs), cards, sticks, or key drives, etc.). The various computer-readable storage media described in this disclosure may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0253] This disclosure provides a computer program product containing instructions that, when run on a computer, cause the computer to execute the physical downlink control channel detection method and the physical downlink control channel transmission method described in any of the above embodiments.

[0254] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A method for detecting a physical downlink control channel, wherein, include: Based on the identifiers of the search space and / or the identifiers of a portion of the bandwidth, the locations of candidate physical downlink control channels are determined from the search space of the physical downlink control channels. Physical downlink control channel detection is performed at the location of the candidate physical downlink control channel.

2. The method according to claim 1, wherein, The location of the candidate physical downlink control channel is determined at least based on a location offset parameter, which is determined based on the identifier of the search space and / or the identifier of a portion of the bandwidth.

3. The method according to claim 2, wherein, time slot n s Position offset parameter of the search space identifier id It is based on time slot n s -1 is the position offset parameter of the search space identifier id. Generate the initial value Y of the position offset parameter for each search space. p,-1,id Generate independently.

4. The method according to claim 2, wherein, time slot n s Position offset parameter of the search space identifier id It is based on time slot n s The position offset parameter of the upper search space identifier id-1 Generation; time slot n s Position offset parameter of upper search space identifier 0 According to time slot n s -1 is the position offset parameter of the search space identifier 0. generate.

5. The method according to claim 2, wherein, time slot n s Position offset parameter of the search space identifier id It is based on time slot h s Position offset parameter of upper search space identifier 0 Generate; search for the position offset parameter Y of spatial identifier 0 in time slot 0. p,-1,0 Generated based on the terminal's temporary cell identifier.

6. The method according to claim 2, wherein, The position offset parameter is based on the first parameter A. p Determined, the first parameter A p The second parameter is determined based on the remainder of the second parameter and the first constant, wherein the second parameter is determined based on at least one of the identifier of the search space and the identifier of the partial bandwidth.

7. The method according to claim 2, wherein, The location of the candidate physical downlink control channel is determined at least according to a third parameter offset, which is used to correct the location offset parameter.

8. The method according to claim 7, wherein, The third parameter offset is generated at least based on the identifier of the search space and / or the identifier of the partial bandwidth.

9. The method according to claim 8, wherein, The third parameter offset is generated based on the identifier of the search space and / or the identifier of the partial bandwidth, as well as the first adjustment parameter corresponding to the identifier of the search space and / or the second adjustment parameter corresponding to the identifier of the partial bandwidth. The first adjustment parameter and / or the second adjustment parameter are any one of the following: maximum number of carriers, signaling configuration parameters, and predefined parameters.

10. The method according to claim 2, wherein, In the partial bandwidth identifier b, time slot n S Position offset parameters in the upper search space It is based on the time slot n in the partial bandwidth identifier b. s -1 Position offset parameter in the search space Generate the initial value Y of the position offset parameter for each search space. p,-1,b Generate independently.

11. The method according to claim 2, wherein, In the partial bandwidth identifier b, time slot n s Position offset parameters in the upper search space It is based on time slot n in partial bandwidth identifier b-1 s Position offset parameters in the upper search space Generation; partial bandwidth identifier 0 in time slot n s Position offset parameters in the upper search space Based on the bandwidth identifier 0, time slot n s -1 Position offset parameter in the search space generate.

12. The method according to claim 2, wherein, In the partial bandwidth identifier b, time slot n s Position offset parameters in the upper search space It is based on the time slot h in partial bandwidth identifier 0 s Position offset parameters in the upper search space Generate; position offset parameter Y of the search space on slot 0 in partial bandwidth identifier 0. p,-1,0 Generated based on the terminal's temporary cell identifier.

13. The method according to claim 1, wherein, The location of the candidate physical downlink control channel is determined at least according to the first candidate control channel index, which is determined according to the second candidate control channel index and the fourth parameter.

14. The method according to claim 13, wherein, The fourth parameter of the search space identifier id is determined based on the search space identifier id and the maximum number of candidate positions, wherein the maximum number of candidate positions is the maximum number of candidate positions corresponding to the aggregation level L of the search space identifier id.

15. The method according to claim 13, wherein, The fourth parameter is determined based on the identifier of the search space and / or the identifier of a portion of the bandwidth.

16. The method according to claim 13, wherein, The fourth parameter is any one of the following: signaling configuration parameters or predefined parameters.

17. The method according to claim 2, wherein, In the partial bandwidth identifier b, time slot n s Position offset parameter of the search space identifier id It is based on the time slot n in the partial bandwidth identifier b. s -1 is the position offset parameter of the search space identifier id. Generate; Search for the position offset parameter Y of the spatial identifier id in slot 0 of partial bandwidth identifier b. p,-1,b,id It is generated based on the partial bandwidth identifier b, the search space identifier id, and the terminal's temporary cell identifier.

18. The method according to claim 2, wherein, In the partial bandwidth identifier b, time slot n s Position offset parameter of the search space identifier id It is based on time slot n in partial bandwidth identifier b-1 s Position offset parameter of the search space identifier id Generation; partial bandwidth identifier 0 in time slot n s Position offset parameter of upper search space identifier 0 Based on the bandwidth identifier 0, time slot n s -1 is the position offset parameter of the search space identifier 0. generate.

19. The method according to claim 2, wherein, In the partial bandwidth identifier b, time slot n s Position offset parameter of the search space identifier id It is based on the time slot n in the partial bandwidth identifier b. s The position offset parameter of the upper search space identifier id-1 Generation; partial bandwidth identifier 0 in time slot n s Position offset parameter of upper search space identifier 0 Based on the bandwidth identifier 0, time slot n s -1 is the position offset parameter of the search space identifier 0. generate.

20. The method according to claim 2, wherein, In the partial bandwidth identifier b, time slot n s Position offset parameter of the search space identifier id It is based on the time slot h in partial bandwidth identifier 0 s Position offset parameter of upper search space identifier 0 Generate; Search for the position offset parameter Y of spatial identifier 0 in time slot 0 within partial bandwidth identifier 0. p,-1,0,0 Generated based on the terminal's temporary cell identifier.

21. The method according to claim 20, wherein, The time slot h s It is based on the time slot n s The identifiers of the search space and the partial bandwidth are determined.

22. The method according to claim 1, wherein, The location of the candidate physical downlink control channel is determined based on at least two of the following: a location offset parameter, a third parameter offset, and a first candidate control channel index. The location offset parameter is determined based on the identifier of the search space and / or the identifier of a portion of the bandwidth. The third parameter offset is used to correct the location offset parameter. The first candidate control channel index is determined based on a second candidate control channel index and a fourth parameter.

23. A method for transmitting a physical downlink control channel, wherein, include: Based on the identifiers of the search space and / or the identifiers of a portion of the bandwidth, the locations of candidate physical downlink control channels are determined from the search space of the physical downlink control channels. The physical downlink control channel is transmitted at the location of the candidate physical downlink control channel.

24. The method according to claim 23, wherein, The location of the candidate physical downlink control channel is determined at least based on a location offset parameter, which is determined based on the identifier of the search space and / or the identifier of a portion of the bandwidth.

25. The method according to claim 24, wherein, time slot n s Position offset parameter of the search space identifier id It is based on time slot n s -1 is the position offset parameter of the search space identifier id. Generate the initial value Y of the position offset parameter for each search space. p,-1,id Generate independently.

26. The method according to claim 24, wherein, time slot n s Position offset parameter of the search space identifier id It is based on time slot n s The position offset parameter of the upper search space identifier id-1 Generation; time slot n s Position offset parameter of upper search space identifier 0 According to time slot n s -1 is the position offset parameter of the search space identifier 0. generate.

27. The method according to claim 24, wherein, time slot n s Position offset parameter of the search space identifier id It is based on time slot h s Position offset parameter of upper search space identifier 0 Generate; search for the position offset parameter Y of spatial identifier 0 in time slot 0. p,-1,0 Generated based on the terminal's temporary cell identifier.

28. The method according to claim 24, wherein, The position offset parameter is based on the first parameter A. p Determined, the first parameter A p The second parameter is determined based on the remainder of the second parameter and the first constant, wherein the second parameter is determined based on at least one of the identifier of the search space and the identifier of the partial bandwidth.

29. The method according to claim 24, wherein, The location of the candidate physical downlink control channel is determined at least according to a third parameter offset, which is used to correct the location offset parameter.

30. The method according to claim 29, wherein, The third parameter offset is generated at least based on the identifier of the search space and / or the identifier of the partial bandwidth.

31. The method according to claim 30, wherein, The third parameter offset is generated based on the identifier of the search space and / or the identifier of the partial bandwidth, as well as the first adjustment parameter corresponding to the identifier of the search space and / or the second adjustment parameter corresponding to the identifier of the partial bandwidth. The first adjustment parameter and / or the second adjustment parameter are any one of the following: maximum number of carriers, signaling configuration parameters, and predefined parameters.

32. The method according to claim 24, wherein, In the partial bandwidth identifier b, time slot n s Position offset parameters in the upper search space It is based on the time slot n in the partial bandwidth identifier b. s -1 Position offset parameter in the search space Generate the initial value Y of the position offset parameter for each search space. p,-1,b Generate independently.

33. The method according to claim 24, wherein, In the partial bandwidth identifier b, time slot n s Position offset parameters in the upper search space It is based on time slot n in partial bandwidth identifier b-1 s Position offset parameters in the upper search space Generation; partial bandwidth identifier 0 in time slot n s Position offset parameters in the upper search space Based on the bandwidth identifier 0, time slot n s -1 Position offset parameter in the search space generate.

34. The method according to claim 24, wherein, In the partial bandwidth identifier b, time slot n s Position offset parameters in the upper search space It is based on the time slot h in partial bandwidth identifier 0 s Position offset parameters in the upper search space Generate; position offset parameter Y of the search space on slot 0 in partial bandwidth identifier 0. p,-1,0 Generated based on the terminal's temporary cell identifier.

35. The method according to claim 23, wherein, The location of the candidate physical downlink control channel is determined at least according to the first candidate control channel index, which is determined according to the second candidate control channel index and the fourth parameter.

36. The method according to claim 35, wherein, The fourth parameter of the search space identifier id is determined based on the search space identifier id and the maximum number of candidate positions, wherein the maximum number of candidate positions is the maximum number of candidate positions corresponding to the aggregation level L of the search space identifier id.

37. The method of claim 35, wherein, The fourth parameter is determined based on the identifier of the search space and / or the identifier of a portion of the bandwidth.

38. The method according to claim 35, wherein, The fourth parameter is any one of the following: signaling configuration parameters or predefined parameters.

39. The method according to claim 24, wherein, In the partial bandwidth identifier b, time slot n s Position offset parameter of the search space identifier id It is based on the time slot n in the partial bandwidth identifier b. s -1 is the position offset parameter of the search space identifier id. Generate; Search for the position offset parameter Y of the spatial identifier id in slot 0 of partial bandwidth identifier b. p,-1,b,id It is generated based on the partial bandwidth identifier b, the search space identifier id, and the terminal's temporary cell identifier.

40. The method of claim 24, wherein, In the partial bandwidth identifier b, time slot n s Position offset parameter of the search space identifier id It is based on time slot n in partial bandwidth identifier b-1 s Position offset parameter of the search space identifier id Generation; partial bandwidth identifier 0 in time slot n s Position offset parameter of upper search space identifier 0 Based on the bandwidth identifier 0, time slot n s -1 is the position offset parameter of the search space identifier 0. generate.

41. The method according to claim 24, wherein, In the partial bandwidth identifier b, time slot n s Position offset parameter of the search space identifier id It is based on the time slot n in the partial bandwidth identifier b. s The position offset parameter of the upper search space identifier id-1 Generation; partial bandwidth identifier 0 in time slot n s Position offset parameter of upper search space identifier 0 Based on the bandwidth identifier 0, time slot n s -1 is the position offset parameter of the search space identifier 0. generate.

42. The method according to claim 24, wherein, In the partial bandwidth identifier b, time slot n s Position offset parameter of the search space identifier id It is based on the time slot h in partial bandwidth identifier 0 s Position offset parameter of upper search space identifier 0 Generate; Search for the position offset parameter Y of spatial identifier 0 in time slot 0 within partial bandwidth identifier 0. p,-1,0,0 Generated based on the terminal's temporary cell identifier.

43. The method according to claim 42, wherein, The time slot h s It is based on the time slot n s The identifiers of the search space and the partial bandwidth are determined.

44. The method according to claim 23, wherein, The location of the candidate physical downlink control channel is determined based on at least two of the following: a location offset parameter, a third parameter offset, and a first candidate control channel index. The location offset parameter is determined based on the identifier of the search space and / or the identifier of a portion of the bandwidth. The third parameter offset is used to correct the location offset parameter. The first candidate control channel index is determined based on a second candidate control channel index and a fourth parameter.

45. A communication device, wherein, include: Memory and processor; Memory and processor are coupled; The memory is used to store instructions that can be executed by the processor; When the processor executes the instructions, it performs the method as described in any one of claims 1-44.

46. ​​A computer-readable storage medium, wherein, The computer-readable storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1-44.

47. A computer program product, wherein, The computer program product includes computer program instructions that, when executed, implement the method as described in any one of claims 1-44.

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