Quasi co-location relation determination method, device and system

Abstract

The invention discloses a quasi co-location relationship determination method, device and system, and the method, device and system are characterized in that UE can determine whether transmission in an SBFD symbol and a non-SBFD symbol has a DMRS antenna port QCL characteristic or not in a manner of base station notification, and can also determine whether transmission in the SBFD symbol and the non-SBFD symbol has the DMRS antenna port QCL characteristic or not according to a rule agreed with a base station, so that the QCL characteristic of the DMRS antenna port can be determined, and the QCL characteristic of the DMRS antenna port can be determined. Therefore, the embodiment of the invention provides a mode for determining the QCL relationship of the DMRS antenna port between different transmissions between the SBFD symbol and the non-SBFD symbol, and after the UE determines the QCL relationship, the QCL characteristics can be applied to the random access process and each transmission after the random access process.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to a method, device, and system for determining a quasi-co-location relationship. Background Art

[0002] Typically, a base station uses the same antenna panels and elements for downlink transmissions, such as control channels, data channels, and common channels. These channels can be configured or assumed to have QCL (quasi co-located) characteristics with the DMRS (Demodulation Reference Signal) antenna ports. QCL helps the UE (User Equipment) perform channel estimation, frequency offset error estimation, and signal synchronization.

[0003] After the introduction of subband full duplex (SBFD) technology, the antenna panels and / or elements used by the base station for downlink transmission in SBFD symbols / time slots and those used in non-SBFD symbols / time slots may be different or the same. This may result in the downlink transmission corresponding to the two types of symbols not having the DMRS antenna port QCL characteristics. The UE needs to know whether the transmission in SBFD symbols and non-SBFD symbols has the DMRS antenna port QCL characteristics when the antenna panels and / or elements used by the base station implement SBFD operation. However, there are no rules in this regard in the current communication standards. Summary of the Invention

[0004] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0005] Embodiments of the present application provide a quasi-co-location relationship determination method, apparatus, and system for determining whether transmissions in SBFD symbols and non-SBFD symbols have DMRS antenna port QCL characteristics.

[0006] In a first aspect, an embodiment of the present application provides a method for determining a quasi-co-location relationship, including:

[0007] The UE determines, according to the indication notification sent by the base station or the rule agreed upon with the base station, whether the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristic or not.

[0008] In a second aspect, an embodiment of the present application provides a method for determining a quasi-co-location relationship, including:

[0009] The base station sends an indication notification or an agreed rule to the UE, so that the UE determines, according to the indication notification or the rule agreed with the base station, whether the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristic.

[0010] In a third aspect, an embodiment of the present application provides a quasi-co-location relationship determination device, comprising at least one processor and a memory for communicating with the at least one processor; the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the quasi-co-location relationship determination method as described in the first aspect.

[0011] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the quasi-co-location relationship determination method as described above.

[0012] The quasi-co-site relationship determination method, device and system provided in the embodiments of the present application can determine whether there is a DMRS antenna port QCL characteristic between the transmissions in the SBFD symbol and the non-SBFD symbol through notification from the base station, or can determine whether there is a DMRS antenna port QCL characteristic between the transmissions in the SBFD symbol and the non-SBFD symbol according to the rules agreed with the base station. Therefore, the embodiments of the present application provide a method for determining the DMRS antenna port QCL relationship between different transmissions between the SBFD symbol and the non-SBFD symbol. After determining the above-mentioned QCL relationship, the UE can apply the QCL characteristic to each transmission during and after the random access process.

[0013] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present application. The purposes and other advantages of the present application can be achieved and obtained through the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the technical solution of the present application and constitute a part of the specification. Together with the examples of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0015] Figure 1a This is a DUD structure provided by an embodiment of the present application;

[0016] Figure 1b This is a DU structure provided by an embodiment of the present application;

[0017] Figure 2 This is a flowchart of a method for determining a quasi-co-location relationship on a UE side provided by an embodiment of the present application;

[0018] Figure 3 This is a flowchart of a method for determining a quasi-co-location relationship on a base station side provided by an embodiment of the present application;

[0019] Figure 4 This is a flow chart of a method for determining a quasi-co-location relationship provided in Example 1 of this application;

[0020] Figure 5 This is a flow chart of a method for determining a quasi-co-location relationship provided in Example 2 of this application;

[0021] Figure 6 This is a flow chart of a method for determining a quasi-co-location relationship provided in Example 3 of this application;

[0022] Figure 7 This is a flowchart of a method for determining a quasi-co-location relationship provided in Example 4 of this application;

[0023] Figure 8 This is a flowchart of a method for determining a quasi-co-location relationship provided in Example 5 of this application;

[0024] Figure 9 This is a flowchart of a method for determining a quasi-co-location relationship provided in Example 6 of this application;

[0025] Figure 10 This is a flow chart of a method for determining a quasi-co-location relationship provided in Example 7 of this application;

[0026] Figure 11 This is a flowchart of a method for determining a quasi-co-location relationship provided in Example 8 of the present application;

[0027] Figure 12 This is a flowchart of a method for determining a quasi-co-location relationship provided in Example 9 of the present application;

[0028] Figure 13 is a flowchart of a method for determining a quasi-co-location relationship provided in Example 10 of the present application;

[0029] Figure 14 This is a flowchart of a method for determining a quasi-co-location relationship provided in Example 12 of this application;

[0030] Figure 15 This is a flowchart of a method for determining a quasi-co-location relationship provided in Example 13 of the present application;

[0031] Figure 16 This is a flowchart of a method for determining a quasi-co-location relationship provided in Example 14 of the present application;

[0032] Figure 17 This is a schematic diagram of the device structure connection provided by an embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementation methods. At the same time, the steps or actions in the method description can also be swapped or adjusted in order in a manner that is obvious to those skilled in the art. Therefore, the various orders in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a necessary order, unless otherwise specified that a certain order must be followed.

[0034] In the description of this application, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0035] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0036] With the rapid development of cellular mobile communication systems, sub-band full-duplex (SBFD) technology may be an important feature to further improve the efficiency and performance of the next generation of mobile communication technologies. Sub-band full-duplex technology can achieve sub-band full-duplex by utilizing different frequency resources. SBFD can improve communication coverage and reduce communication latency. This is because, in the time division duplex (TDD) transmission mode, although downlink (DL) and / or uplink (UL) resources cannot be accessed at the same time, downlink (DL) and / or uplink (UL) resources are available at any time through appropriate configuration. SBFD can improve the UL coverage of the TDD system, reduce the UL transmission latency, and increase the UL transmission capacity.

[0037] In part or all of a DL symbol or slot, one UL subband and up to two DL subbands are configured. For example, the UL subband and the DL subband are required to be configured based on a DL BWP (Downlink Bandwidth Part) and a UL BWP (Uplink Bandwidth Part) pair, which are required to have the same center frequency. In the frequency domain, the frequency domain resources of the UL subband and the DL subband are generally considered to be allocated within the frequency domain range of the DL BWP. The DL BWP is valid within the DL symbol or slot. However, in the frequency domain, the frequency domain resources of the UL subband and the DL subband can also be allocated outside the DL BWP, for example, partially or completely beyond the frequency domain range of the DL BWP. The UL subband and the DL subband are also referred to as SBFD subbands. This means that an SBFD subband is allocated within the DL BWP within the DL symbol / slot. The SBFD subband generally includes at least one DL subband and one UL subband.

[0038] For example, in a 100 MHz TDD carrier, 20 consecutive RBs (Resource Blocks) are configured as the UL subband in the DL BWP and within a DL symbol / slot. The remaining frequency domain resources in the DL BWP are the DL subband (gap allocation is optional). Alternatively, a DL subband can be configured in the DL BWP and within a DL symbol / slot. In this way, within a DL symbol / slot, the UL subband can be used for UL transmission, and the DL subband can be used for DL transmission. Figure 1a In the UL subband, a DL subband and a UL subband are configured in a DL symbol / slot. This structure is generally called "DUD" (frequency-domain-based structure). Figure 1a In the UL / DL symbol / slot, a UL subband and a DL subband are configured in the DL symbol / slot. This structure is generally called "DU" / "UD" (based on the frequency domain structure).

[0039] At the current stage, sub-band full-duplex technology includes the following features:

[0040] The base station is capable of simultaneously receiving (in the UL subband) and transmitting (in the DL subband) in the same time domain. The UE is not capable of simultaneously receiving (in the DL subband) and transmitting (in the UL subband) in the same time domain. Here, the UL subband and DL subband are allocated in the same OFDM symbol / slot and are frequency-divided.

[0041] For the convenience of description, some technical terms are as follows:

[0042] A symbol assigned an SBFD subband is called an SBFD symbol, and a slot containing an SBFD symbol is called an SBFD slot. A symbol not assigned an SBFD subband is called a non-SBFD symbol (that is, a regular symbol, not an SBFD symbol), and a slot not containing an SBFD symbol is called a non-SBFD slot. In the following text, some expressions use the terms "SBFD symbol" and "non-SBFD symbol" to distinguish between the two types of symbols, while others use the terms "SBFD symbol" and "non-SBFD symbol" to distinguish between them. These two expressions are equivalent.

[0043] For transmissions in different symbol types (SBFD symbols and non-SBFD symbols), antenna panels may differ. These differences can include differences in the antenna panels used for the transmissions, or differences in the elements of the antenna panel used when the antenna panel is the same (including the number of elements and the elements themselves; for example, the same number of elements but different elements also constitutes element differences). In other words, under current quasi-co-location (QCL) requirements, only by using the same elements (i.e., the same elements on the same panel) to perform different transmissions to the UE (in different symbol types or in the same symbol type) can the same transmission characteristics be maintained between different transmissions. For example, the same transmission characteristics in the time, frequency, or spatial domains can be maintained. In other words, the same DMRS (Demodulation Reference Signal) antenna port quasi-co-location characteristics can be maintained between different transmissions. Rarely, if different antenna panels / elements are specially processed, even if different transmissions are performed using different antenna panels / elements, the same DMRS antenna port quasi-co-location characteristics can be maintained between the different transmissions.

[0044] Taking into account that the usage of the above-mentioned antenna panel will be deployed in actual networks in the future, for example, if in an actual network, the transmission in the SBFD symbol / slot (in the UL subband or DL subband) and the transmission in the non-SBFD symbol / slot (in the DL BWP or UL BWP), the interference experienced by these two transmissions and the antenna panels and / or elements in the panels used are different, the present application considers the following method for these two transmissions to solve the quasi-co-location characteristics, i.e., the QCL characteristics, between the transmissions of the two different types of symbols.

[0045] An embodiment of the present application provides a method, device and system for determining a quasi-co-site relationship. Through notification from the base station, the UE can determine whether there is a DMRS antenna port QCL characteristic between the transmissions in the SBFD symbol and the non-SBFD symbol. Alternatively, according to the rules agreed with the base station, the UE can determine whether there is a DMRS antenna port QCL characteristic between the transmissions in the SBFD symbol and the non-SBFD symbol. Therefore, an embodiment of the present application provides a method for determining the DMRS antenna port QCL relationship between different transmissions between the SBFD symbol and the non-SBFD symbol. After determining the above-mentioned QCL relationship, the UE can apply the QCL characteristic to each transmission during and after the random access process.

[0046] The following describes the method, device, and system for determining a quasi-co-location relationship with reference to the accompanying drawings:

[0047] Reference Figure 2 As shown, Figure 2 This is a flowchart of a UE-side method for determining a quasi-co-location relationship provided in an embodiment of the present application, including but not limited to the following steps:

[0048] Step S100: The UE determines whether a first transmission in an SBFD symbol and a second transmission in a non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristic according to an indication notification sent by the base station or a rule agreed upon with the base station.

[0049] Considering that the UE is not aware of the specific implementation of the base station, for example, the UE is not aware of whether the base station uses the same antenna panel and / or elements to perform different transmissions in two symbol types (SBFD symbols and non-SBFD symbols), or the UE is not aware of whether different transmissions have the same DMRS antenna port QCL characteristics based on existing assumptions. Therefore, the base station can notify the UE by signaling, that is, sending an indication notification to the UE to inform the UE that the DMRS antenna port QCL characteristics are or are not the same between transmissions in different symbol types; the UE can also agree with the base station that, for different transmissions received by the UE, the UE determines whether these transmissions have the same DMRS antenna port QCL characteristics based on the symbol types in which the different transmissions are located.

[0050] Accordingly, refer to Figure 3 As shown, Figure 3 This is a flowchart of a base station side of a method for determining a quasi-co-location relationship provided in an embodiment of the present application, including but not limited to the following steps:

[0051] In step S200, the base station sends an indication notification or an agreed rule to the UE, so that the UE determines whether the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristic according to the indication notification or the agreed rule with the base station.

[0052] Specifically, the indication notification includes a signaling notification sent by the base station via signaling and / or a broadcast notification sent through system broadcast information; the above-mentioned quasi-co-location relationship determination method also includes:

[0053] The UE receives a signaling notification, where the signaling notification is used to notify the UE that the first transmission and the second transmission have or do not have the same DMRS antenna port quasi-co-location characteristic, or is used to provide antenna panel information so that the UE determines, based on the antenna panel information, that the first transmission and the second transmission have or do not have the same DMRS antenna port quasi-co-location characteristic;

[0054] or,

[0055] The UE receives a broadcast notification, which is used to notify the UE that the first transmission and the second transmission have or do not have the same DMRS antenna port quasi-co-location characteristics, or to instruct the UE to determine whether the first transmission and the second transmission have or do not have the same DMRS antenna port quasi-co-location characteristics according to the quasi-co-location relationship in the current protocol.

[0056] There are many ways to implement signaling to the UE whether different transmissions in SBFD symbols and non-SBFD symbols have the same DMRS antenna port QCL characteristics.

[0057] The first way is that the base station notifies the UE via signaling that the first transmission in the SBFD symbol / slot (in the UL subband and / or DL subband) and the second transmission in the non-SBFD symbol / slot (in the DL BWP and / or UL BWP) have or do not have the same DMRS antenna port QCL characteristics.

[0058] The second approach is for the base station to notify the UE via signaling of relevant information used to determine whether the first and second transmissions have the same DMRS antenna port QCL characteristics. Based on this relevant information (and the rules agreed upon by the base station and the UE), the UE can determine whether the first and second transmissions have the same DMRS antenna port QCL characteristics. For example, the base station notifies the UE of at least one of the following information used for the first and second transmissions: antenna panel, number of elements, element position, antenna port, etc. The base station and the UE agree that as long as the first and second transmissions use the same antenna panel and elements, the UE assumes that the first and second transmissions have the same DMRS antenna port QCL characteristics. Here, the same elements include the same panel where the elements are located and the same number and position of elements; otherwise, the elements are considered different. Alternatively, if the first and second transmissions use different panels or the same panel but different elements, and these devices are specially designed or processed so that the first and second transmissions have the same DMRS antenna port QCL characteristics, then the base station should notify the UE that the first and second transmissions have the same DMRS antenna port QCL characteristics.

[0059] The third method is that the base station sends information through system broadcast information, which is used to indicate that the first transmission of the SBFD symbol and the second transmission of the non-SBFD symbol continue to use the QCL relationship in the current protocol, for example, the DMRS-related QCL characteristics defined in the current protocols TS38.213i00 and TS38.214i00. In other words, in this case, the UE can ignore the influence of the symbol type in which the first transmission and the second transmission are located, that is, the UE treats the first transmission in the SBFD symbol as a transmission in a non-SBFD symbol (i.e., a DL symbol). In this way, the first transmission is also regarded as a transmission in a non-SBFD symbol, thereby continuing to use the QCL characteristics in the current protocol.

[0060] In a fourth manner, the base station transmits information through system broadcast information, indicating whether the first transmission of the SBFD symbol and the second transmission of the non-SBFD symbol have the same DMRS antenna port QCL characteristics. If they do not have the same DMRS antenna port QCL characteristics, the DMRS antenna port QCL characteristics between the first transmission and the second transmission are determined according to other manners.

[0061] In some embodiments, the rule agreed upon by the UE and the base station is that the UE determines whether the first transmission and the second transmission have the same DMRS antenna port quasi-co-location characteristic or not based on the symbol type of the first transmission and the symbol type of the second transmission.

[0062] Specifically, the method for determining a quasi-co-location relationship based on agreed rules further includes:

[0063] When the base station configures the SBFD subband and the UE does not receive an indication notification, the UE assumes that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristics;

[0064] In response to the UE receiving the indication notification, the UE determines that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristic, or the UE determines according to the indication notification that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have or do not have the same DMRS antenna port quasi-co-location characteristic.

[0065] That is, the agreed rule is that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristics. When the base station configures the SBFD subband and does not configure the corresponding indication notification for the UE, the UE judges the quasi-co-location relationship according to the above default rule; if the indication notification is received subsequently, the UE updates the agreed rule that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristics, or the UE directly determines whether the first transmission and the second transmission have a quasi-co-location relationship based on the specific content of the indication notification.

[0066] Specifically, the method for determining a quasi-co-location relationship based on agreed rules further includes:

[0067] When the base station configures the SBFD subband and the UE does not receive an indication notification, the UE assumes that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristics;

[0068] In response to the UE receiving the indication notification, the UE determines that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristics, or the UE determines according to the indication notification that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have or do not have the same DMRS antenna port quasi-co-location characteristics.

[0069] That is, the agreed rule is that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristics. When the base station configures the SBFD subband and the UE does not have a corresponding indication notification, the UE determines the quasi-co-location relationship according to the above default rule; if an indication notification is received subsequently, the UE updates the agreed rule that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristics, or the UE directly determines whether the first transmission and the second transmission have a quasi-co-location relationship based on the specific content of the indication notification.

[0070] The base station and the UE agree on a rule to determine whether different transmissions in SBFD symbols and non-SBFD symbols have the same DMRS antenna port QCL characteristics. For example, if the base station sends different transmissions in different symbol types and the UE intends to receive these different transmissions, the UE assumes by default that different transmissions in the same symbol type have the same DMRS antenna port QCL characteristics. Whether different transmissions in different symbol types have the same DMRS antenna port QCL characteristics or not can be determined by the UE based on further QCL-related configuration signaling from the base station.

[0071] For example, the base station divides PRACH sequences used for PRACH transmission into multiple groups, where one group of sequences is used to indicate that the UE has the capability to perform reception and transmission in both SBFD symbols and non-SBFD symbols. The UE uses the sequences in this group for PRACH transmission (or PRACH repetition transmission between different types of symbols) via PRACH resources in UL symbols (the PRACH resources are shared by non-SBFD subband-capable UEs and SBFD subband-capable UEs). Alternatively, the base station configures independent PRACH resources in SBFD symbols (the PRACH resources are for SBFD subband-capable UEs), and the UE uses the independent PRACH resources to perform PRACH transmission (in this case, the UE can use all PRACH sequences and does not need to group the PRACH sequences, because the independent PRACH resources are only available to SBFD subband-capable UEs). Then:

[0072] The base station can schedule the UE's PDCCH scrambled by RA-RNTI and the PDSCH (or PDSCH repetition) scheduled by the DCI in the PDCCH in any SBFD symbol or non-SBFD symbol; the base station can also schedule the UE's PUSCH (or PUSCH repetition) scheduled by RAR UL grant in any type of symbol; the base station can also schedule the PDCCH scrambled by TC-RNTI and the PDSCH (or PDSCH repetition) scheduled by the PDCCH in any type of symbol; the base station can also schedule the HARQ-ACK corresponding to the PDSCH PUCCH (or PUCCH repetition) in any type of symbol; if the UE determines based on the above method (base station signaling notification or according to the agreed rules) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics, the UE can assume that the above downlink transmissions, and the above downlink transmissions and the SSB(s) associated with the PRACH transmission have the same DMRS antenna port QCL characteristics respectively; otherwise, the UE assumes that the above downlink transmission and the downlink transmission in the same type of symbol have the same DMRS antenna port QCL characteristics, and the UE assumes that the above downlink transmission and the SSB in the same type of symbol have the same DMRS antenna port QCL characteristics (the SSB is associated with the PRACH transmission), that is, there is no DMRS antenna port QCL characteristic between downlink transmissions in different types of symbols.

[0073] For example, the base station divides the PRACH sequences used for PRACH transmission into two groups, where the first group of sequences is used to indicate that the UE has the following capabilities: the UE only supports reception or transmission of SBFD symbols or non-SBFD symbols in different slots, where only one symbol type is used in a slot for such reception or transmission; the second group of sequences is used to indicate that the UE has the ability to receive or transmit SBFD symbols and non-SBFD symbols in different slots (for example, a transmission is first performed in an SBFD symbol in slot 1 and a second time in a non-SBFD symbol in slot 2, where only one symbol type can be used in each slot). The reception or transmission is repeated or periodic, and all receptions or transmissions can only be in the same symbol type.

[0074] In response to the UE using a sequence in the first group for PRACH transmission (or PRACH repetition between symbols of the same type), then:

[0075] The base station and UE agree that the DCI-scheduled PDSCH in the UE's PDCCH scrambled by RA-RNTI can only be transmitted in the same symbol type, for example, only in SBFD symbols or only in non-SBFD symbols in different slots; the base station can also schedule the PUSCH scheduled by the UE's RAR UL grant to be repeated in the same type of symbols in different slots; the base station can also schedule the PDSCH scheduled by the PDCCH scrambled by TC-RNTI to be repeated in the same type of symbols in different slots; the base station can also schedule the HARQ-ACK corresponding to the PDSCH PUCCH is repeated in different slots in the same type of symbol; if the UE determines based on the above method (base station signaling notification or according to the agreed rules) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics, the UE can assume that the above downlink transmissions, and the above downlink transmissions and the SSB(s) associated with the PRACH transmission have the same DMRS antenna port QCL characteristics respectively; otherwise, the UE assumes that the above downlink transmission and the downlink transmission in the same type of symbol have the same DMRS antenna port QCL characteristics, and the UE assumes that the above downlink transmission and the SSB in the same type of symbol have the same DMRS antenna port QCL characteristics (the SSB is associated with the PRACH transmission), that is, there is no DMRS antenna port QCL characteristic between downlink transmissions in different types of symbols.

[0076] In response to the UE using a sequence in the second group for PRACH transmission (or PRACH repeated transmission between symbols of the same type), then:

[0077] The base station and UE agree that the PDSCH scheduled by the DCI in the PDCCH scrambled by RA-RNTI of the UE can be repeated in different slots in two types of symbols, for example, the first transmission is only in SBFD symbols in slot 1, and the second transmission is in non-SBFD symbols in slot 2; the base station can schedule the PUSCH scheduled by the RAR UL grant of the UE to be repeated in different slots in two types of symbols, for example, the first transmission is only in SBFD symbols in slot 1, and the second transmission is in non-SBFD symbols in slot 2; the base station can also schedule the PDSCH scheduled by the PDCCH scrambled by TC-RNTI to be repeated in different slots in two types of symbols, for example, the first transmission is only in SBFD symbols in slot 1, and the second transmission is in non-SBFD symbols in slot 2; the base station can also schedule the HARQ-ACK PUCCH corresponding to the PDSCH to be repeated in different slots in two types of symbols, for example, the first transmission is only in SBFD symbols in slot 1. The second transmission is in slot 2 of a non-SBFD symbol. If the UE determines based on the above method (base station signaling notification or according to an agreed rule) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics, the UE can assume that the above downlink transmissions and the SSB(s) associated with the PRACH transmission have the same DMRS antenna port QCL characteristics, respectively. Otherwise, the UE assumes that the above downlink transmission and the downlink transmissions in the same type of symbol have the same DMRS antenna port QCL characteristics, and the UE assumes that the above downlink transmission and the SSB in the same type of symbol have the same DMRS antenna port QCL characteristics (the SSB is associated with the PRACH transmission), that is, downlink transmissions in different types of symbols do not have DMRS antenna port QCL characteristics.

[0078] In some embodiments, the antenna panel information includes at least one of the following:

[0079] identification of antenna panels;

[0080] the number of elements of the antenna panel;

[0081] The location of the elements of the antenna panel;

[0082] Antenna port identifier.

[0083] In some embodiments, the signaling notification includes at least one of the following:

[0084] Notifications sent via RRC signaling;

[0085] Notification sent via MAC CE signaling;

[0086] Notification sent via DCI in PDCCH.

[0087] In some embodiments, the DCI includes at least one of the following:

[0088] DCI for scheduling PDSCH;

[0089] Activate the DCI configured by SPS;

[0090] DCI for activating dormancy;

[0091] Deactivate the DCI configured by SPS;

[0092] Deactivate DCI of CG PDSCH;

[0093] Activate DCI for CG PUSCH;

[0094] DCI used to trigger HARQ-ACK codebook retransmission.

[0095] In some embodiments, the RRC signaling includes at least one of the following:

[0096] RRC signaling for configuring SPS configuration;

[0097] RRC signaling used to configure PDSCH time domain resources;

[0098] RRC signaling for configuring DMRS for PDSCH;

[0099] RRC signaling for configuring PDCCH resources;

[0100] RRC signaling for configuring DMRS for PDCCH;

[0101] RRC signaling for configuring SBFD subband, UL subband or DL subband;

[0102] RRC signaling used to configure CG PUSCH;

[0103] RRC signaling for configuring PUCCH;

[0104] Custom RRC signaling for configuring the first transmission and the second transmission to have or not have the same DMRS antenna port quasi-co-location characteristic.

[0105] In some embodiments, the system broadcast message includes at least one of the following: SSB, SIB1, SIB2, new SIB.

[0106] The first transmission and the second transmission may include one of the following:

[0107] The transmission of downlink data includes but is not limited to: PDSCH scrambled by RA-RNTI, P-RNTI, SI-RNTI, MSGB-RNTI, Temporary C-RNTI, MCS-C-RNTI, CS-RNTI, G-CS-RNTI, G-RNTI or MCCH-RNTI (scrambling by different RNTIs means that the PDSCH has different functions and purposes), unicast PDSCH scrambled by C-RNTI, and multicast PDSCH scrambled by C-RNTI.

[0108] Downlink control transmission, including but not limited to: P-RNTI scrambled PDCCH for paging and system information update indication, SI-RNTI scrambled PDCCH for system broadcast information, RA-RNTI scrambled PDCCH for random access response, MSGB-RNTI scrambled PDCCH for 2-step random access response, Temporary C-RNTI scrambled PDCCH for contention resolution (in random access process), Temporary C-RNTI scrambled PDCCH for MSG3 transmission during random access, C-RNTI scrambled PDCCH for uplink transmission of dynamically scheduled unicast, MCS-C-RNTI scrambled PDCCH for uplink transmission of dynamically scheduled unicast, C-RNTI scrambled PDCCH for downlink transmission of dynamically scheduled unicast, NCR-RNTI scrambled PDCCH for NCR operation, MCS-C-RNTI scrambled PDCCH for downlink transmission of dynamically scheduled unicast, C-RNTI scrambled PDCCH for random access triggered by PDCCH command, C-RNTI scrambled PDCCH for retransmission of multicast services, CS-RNTI scrambled PDCCH for activation / deactivation / retransmission of configured unicast / multicast services, G-CS-RNTI scrambled PDCCH for activation / deactivation / retransmission of configured multicast services. PDCCH for activation / deactivation / retransmission, PDCCH for PUCCH power with TPC-PUCCH-RNTI scrambling, PDCCH for PUSCH power with TPC-PUSCH-RNTI scrambling, PDCCH for SRS triggering and power with TPC-SRS-RNTI scrambling, PDCCH for downlink preemption indication with INT-RNTI scrambling, PDCCH for indicating slot format with SFI-RNTI scrambling, PDCCH for activating semi-static CSI reporting on PUSCH with SP-CSI-RNTI scrambling, PDCCH for uplink cancellation indication with CI-RNTI scrambling, PDCCH for dynamically scheduled multicast services with G-RNTI scrambling, PDCCH for dynamically scheduled MCCH signaling and MCCH update with MCCH-RNTI scrambling.

[0109] The transmission corresponding to the downlink transmission common channel includes but is not limited to: SS / PBCH block (denoted as SSB), CORESET#0.

[0110] The transmission of downlink reference signals includes but is not limited to: DMRS, CSI-RS, PRS, and TRS.

[0111] The above-mentioned DCI scrambled by RNTI means that a CRC is added to the DCI and the CRC is scrambled by the RNTI. The above-mentioned PDCCH scrambled by RNTI indicates that the PDCCH carries a DCI and a CRC is added to the DCI and the CRC is scrambled by the RNTI.

[0112] The following provides some specific examples to illustrate the method for determining the quasi co-location relationship with respect to relevant transmissions during random access.

[0113] Example 1

[0114] Reference Figure 4 As shown, the method for determining a quasi-co-location relationship in this example further includes:

[0115] Step S310, in response to the UE sending a PRACH transmission to the base station in a SBFD symbol, the UE attempts to receive a DCI-scheduled PDSCH scrambled by the RA-RNTI or MSGB-RNTI in a non-SBFD symbol, wherein the PRACH transmission is associated with at least one SSB or CSI-RS resource, and the SSB or CSI-RS resource is in the SBFD symbol;

[0116] Step S320, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDSCH and the SSB or CSI-RS resources have the same DMRS antenna port quasi co-location characteristic;

[0117] Alternatively, in step S330, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristic, the UE assumes that the PDSCH and the SSB or CSI-RS resources do not have the same DMRS antenna port quasi-co-location characteristic.

[0118] An implementation scenario of Example 1: During the UE random access process, the UE sends a PRACH transmission via the SBFD symbol (UL subband). In response to the base station's response, the UE detects and receives a DCI scrambled by the RA-RNTI or MSGB-RNTI, and receives a transport block in the corresponding PDSCH (i.e., receives the PDSCH scheduled by the DCI, the PDSCH including a transport block) in the non-SBFD symbol. The PRACH transmission is associated with one or more SSB or CSI-RS resources, and the SSB or CSI-RS is in the SBFD symbol.

[0119] In the above scenario, further, if the UE determines based on the above method (base station signaling notification or according to an agreed rule) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics, the UE assumes that the SSB or CSI-RS resources associated with the PRACH used by the UE have the same DMRS antenna port QCL characteristics (that is, the UE assumes that the PDSCH and the SSB or CSI-RS resources have the same DMRS antenna port QCL characteristics, although they are in different types of symbols). In this way, the UE can utilize the QCL characteristics to receive and decode the PDSCH based on the SSB or CSI-RS. For example, the UE assumes that the DMRS port of the PDSCH and the SSB or CSI-RS resource have QCL characteristics in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial RX parameter.

[0120] In the above scenario, further, if the UE determines based on the above method (base station signaling notification or according to agreed rules) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port QCL characteristics, the UE is prohibited from assuming that the SSB or CSI-RS resources associated with the PRACH used by the UE have the same DMRS antenna port QCL characteristics. For example, the UE is prohibited from assuming that the DMRS port of the PDSCH and the SSB or CSI-RS resources have QCL characteristics in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters. That is, the UE believes that the SSB or CSI-RS resources associated with the PRACH do not have the same DMRS antenna port QCL characteristics. That is, only when the SSB or CSI-RS resources associated with the PRACH are in the same type of symbols, the UE can assume that the SSB or CSI-RS resources associated with the PRACH have the same DMRS antenna port QCL characteristics, otherwise, they do not.

[0121] For the "attempt" in Example 1, it means that the UE is in a state of waiting for a response message or detecting a returned message after performing certain actions. Therefore, the "attempt to receive" in the above Example 1 can also be expressed as "attempt to receive or detect". For the same expressions appearing in subsequent examples, they are all explained here and will not be repeated. For the "assume" in Example 1 (expressed as assume in the protocol), it means that the UE assumes certain parameters or states, and the UE makes subsequent judgments or performs actions based on these parameters or states. For the same expressions appearing in subsequent examples, they are all explained here and will not be repeated.

[0122] Example 2

[0123] Reference Figure 5 As shown, the method for determining a quasi-co-location relationship in this example further includes:

[0124] Step S410, in response to the UE sending a PRACH transmission to the base station in a non-SBFD symbol, the UE attempts to receive a DCI-scheduled PDSCH scrambled by the RA-RNTI or MSGB-RNTI in the SBFD symbol, wherein the PRACH transmission is associated with at least one SSB or CSI-RS resource, and the SSB or CSI-RS resource is in the non-SBFD symbol.

[0125] Step S420, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDSCH and the SSB or CSI-RS resources have the same DMRS antenna port quasi co-location characteristic;

[0126] Alternatively, in step S430, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristic, the UE assumes that the PDSCH and the SSB or CSI-RS resources do not have the same DMRS antenna port quasi-co-location characteristic.

[0127] An implementation scenario of Example 2: During the UE random access process, the UE sends a PRACH transmission through a non-SBFD symbol (UL BWP). In response to the base station's response, the UE detects and receives a DCI scrambled by the RA-RNTI or MSGB-RNTI, and receives a transport block in the corresponding PDSCH (i.e., receives the PDSCH scheduled by the DCI, the PDSCH including a transport block) in the SBFD symbol. The PRACH transmission is associated with one or more SSB or CSI-RS resources, and the SSB or CSI-RS is in the non-SBFD symbol.

[0128] In the above scenario, further, if the UE determines based on the above method (base station signaling notification or according to agreed rules) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics, the UE assumes that the SSB or CSI-RS resources associated with the PRACH used by the UE have the same DMRS antenna port QCL characteristics (that is, the UE assumes that the PDSCH and the SSB or CSI-RS resources have the same DMRS antenna port QCL characteristics, although they are in different types of symbols). In this way, the UE can utilize the QCL characteristics to receive and decode the PDSCH based on the SSB or CSI-RS. For example, the UE assumes that the DMRS port of the PDSCH and the SSB or CSI-RS resources have QCL characteristics in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters.

[0129] In the above scenario, further, if the UE determines based on the above method (base station signaling notification or according to agreed rules) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port QCL characteristics, the UE is prohibited from assuming that the SSB or CSI-RS resources associated with the PRACH used by the UE have the same DMRS antenna port QCL characteristics. For example, the UE is prohibited from assuming that the DMRS port of the PDSCH and the SSB or CSI-RS resources have QCL characteristics in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters. That is, the UE believes that the SSB or CSI-RS resources associated with the PRACH do not have the same DMRS antenna port QCL characteristics. That is, only when the SSB or CSI-RS resources associated with the PRACH are in the same type of symbols, the UE can assume that the SSB or CSI-RS resources associated with the PRACH have DMRS antenna port QCL characteristics, otherwise, they do not.

[0130] Example 3

[0131] Reference Figure 6 As shown, the method for determining a quasi-co-location relationship in this example further includes:

[0132] Step S510: In response to a PRACH transmission triggered by a PDCCH order, the UE attempts to receive DCI scrambled by the RA-RNTI from the PDCCH in a non-SBFD symbol, wherein the PDCCH order triggers a contention-free random access procedure for the SpCell and the PDCCH order is transmitted in a SBFD symbol;

[0133] Step S520, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH and the PDCCH order have the same DMRS antenna port quasi co-location characteristic;

[0134] Alternatively, in step S530, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH and the PDCCH order do not have the same DMRS antenna port quasi co-location characteristic.

[0135] An implementation scenario of Example 3: In response to a PRACH transmission triggered by a PDCCH order transmitted in SBFD symbols, the UE can attempt to receive DCI scrambled by the RA-RNTI in the PDCCH in non-SBFD symbols. The PDCCH order triggers a contention-free random access procedure for the SpCell, and the PDCCH order is transmitted in SBFD symbols.

[0136] In the above scenario, further, if the UE determines based on the above method (base station signaling or according to an agreed rule) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics, the UE assumes that the PDCCH and the PDCCH order have the same DMRS antenna port QCL characteristics, even though they are in different types of symbols. In this way, the UE can utilize the QCL characteristics to receive and decode the PDSCH based on the SSB or CSI-RS. For example, the UE assumes that the DMRS port of the PDCCH and the DMRS of the PDCCH order have QCL characteristics in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters.

[0137] In the above scenario, further, if the UE determines based on the above method (base station signaling notification or according to agreed rules) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port QCL characteristics, the UE is prohibited from assuming that the PDCCH and the PDCCH order have the same DMRS antenna port QCL characteristics. For example, the UE is prohibited from assuming that the DMRS port of the PDCCH and the DMRS of the PDCCH order have QCL characteristics in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters. That is, the UE believes that the PDCCH and the PDCCH order do not have the same DMRS antenna port QCL characteristics. That is, only when the PDCCH and the PDCCH order are in the same type of symbols, the UE can assume that the PDCCH and the PDCCH order have the same DMRS antenna port QCL characteristics, otherwise, they do not.

[0138] Example 4

[0139] Reference Figure 7 As shown, the method for determining a quasi-co-location relationship in this example further includes:

[0140] Step S610: In response to a PRACH transmission triggered by a PDCCH order, the UE attempts to receive DCI scrambled by the RA-RNTI from the PDCCH in a SBFD symbol, wherein the PDCCH order triggers a contention-free random access procedure for the SpCell and the PDCCH order is transmitted in a non-SBFD symbol.

[0141] Step S620: In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH and the PDCCH order have the same DMRS antenna port quasi co-location characteristic;

[0142] Alternatively, in step S630, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH and the PDCCH order do not have the same DMRS antenna port quasi co-location characteristic.

[0143] An implementation scenario of Example 4: In response to a PRACH transmission triggered by a PDCCH order, the UE can attempt to receive DCI in a PDCCH scrambled with the RA-RNTI in a SBFD symbol. The PDCCH order triggers a contention-free random access procedure for the SpCell. The PDCCH order is transmitted in a non-SBFD symbol.

[0144] In the above scenario, further, if the UE determines based on the above method (base station signaling or according to an agreed rule) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics, the UE assumes that the PDCCH and the PDCCH order have the same DMRS antenna port QCL characteristics, even though they are in different types of symbols. In this way, the UE can utilize the QCL characteristics to receive and decode the PDSCH based on the SSB or CSI-RS. For example, the UE assumes that the DMRS port of the PDCCH and the DMRS of the PDCCH order have QCL characteristics in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters.

[0145] In the above scenario, further, if the UE determines based on the above method (base station signaling notification or according to agreed rules) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port QCL characteristics, the UE is prohibited from assuming that the PDCCH and the PDCCH order have the same DMRS antenna port QCL characteristics. For example, the UE is prohibited from assuming that the DMRS port of the PDCCH and the DMRS of the PDCCH order have QCL characteristics in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters. That is, the UE believes that the PDCCH and the PDCCH order do not have the same DMRS antenna port QCL characteristics. That is, only when the PDCCH and the PDCCH order are in the same type of symbols, the UE can assume that the PDCCH and the PDCCH order have the same DMRS antenna port QCL characteristics, otherwise, they do not.

[0146] Example 5

[0147] Reference Figure 8 As shown, the method for determining a quasi-co-location relationship in this example further includes:

[0148] Step S710: In response to a PRACH transmission triggered by a PDCCH order, the UE attempts to receive DCI scrambled by the RA-RNTI from the PDCCH in a non-SBFD symbol, wherein the PDCCH order triggers a contention-free random access procedure for a secondary cell, or the CORESET of the PDCCH order is not associated with the physical cell ID of the UE's serving cell;

[0149] Step S720: In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristic, the UE assumes that the CORESET associated with the type1-PDCCH CSSset corresponding to the PDCCH where the DCI is located and the PDSCH scheduled by the DCI have the same DMRS antenna port quasi-co-location characteristic;

[0150] Alternatively, in step S730, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have different DMRS antenna port quasi-co-location characteristics, the UE assumes that the CORESET associated with the type1-PDCCH CSS set corresponding to the PDCCH where the DCI is located and the PDSCH scheduled by the DCI have different DMRS antenna port quasi-co-location characteristics;

[0151] Among them, PDSCH is in SBFD symbols and CORESET is in non-SBFD symbols.

[0152] An implementation scenario of Example 5: In response to a PRACH transmission triggered by a PDCCH order that triggers a contention-free random access procedure to a secondary cell, or the PDCCH order is from a cell other than the serving cell (i.e., the CORESET of the PDCCH order is not associated with the physical cell ID of the serving cell), the UE can attempt to receive DCI scrambled with the RA-RNTI from the PDCCH in non-SBFD symbols.

[0153] In the above scenario, further, if the UE determines based on the above method (base station signaling notification or according to an agreed rule) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics, the UE assumes that the CORESET associated with the type1-PDCCH CSS set where the PDCCH where the DCI is located is located and the PDSCH scheduled by the DCI have the same DMRS antenna port QCL characteristics. Wherein, the CORESET is located in the non-SBFD symbol and the PDSCH is located in the SBFD symbol. For example, the UE assumes that there are QCL characteristics between the DMRS port of the CORESET and the DMRS port of the PDSCH in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters.

[0154] In the above scenario, further, if the UE determines based on the above method (base station signaling or according to an agreed rule) that the first transmission in an SBFD symbol and the second transmission in a non-SBFD symbol do not have the same DMRS antenna port QCL characteristics, the UE MUST NOT assume that the CORESET associated with the type1-PDCCH CSS set in which the PDCCH containing the DCI is located and the PDSCH scheduled by the DCI have the same DMRS antenna port QCL characteristics. The CORESET is located in a non-SBFD symbol and the PDSCH is located in an SBFD symbol. For example, the UE MUST NOT assume that the DMRS ports of the CORESET and the DMRS ports of the PDSCH have the same QCL characteristics with respect to Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters. In other words, the UE assumes that the CORESET and the PDSCH do not have the same DMRS antenna port QCL characteristics. That is, the UE can assume that the CORESET and the PDSCH have the same DMRS antenna port QCL characteristics only if the CORESET and the PDSCH are in the same symbol type; otherwise, they do not.

[0155] Example 6

[0156] Reference Figure 9 As shown, the method for determining a quasi-co-location relationship in this example further includes:

[0157] Step S810: In response to a PRACH transmission triggered by a PDCCH order, the UE attempts to receive DCI scrambled by the RA-RNTI from the PDCCH in an SBFD symbol, wherein the PDCCH order triggers a contention-free random access procedure for a secondary cell, or the CORESET of the PDCCH order is not associated with the physical cell ID of the UE's serving cell;

[0158] Step S820: In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristic, the UE assumes that the CORESET associated with the type1-PDCCH CSSset corresponding to the PDCCH where the DCI is located and the PDSCH scheduled by the DCI have the same DMRS antenna port quasi-co-location characteristic;

[0159] Alternatively, in step S830, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have different DMRS antenna port quasi co-location characteristics, the UE assumes that the CORESET associated with the type1-PDCCH CSS set corresponding to the PDCCH where the DCI is located and the PDSCH scheduled by the DCI have different DMRS antenna port quasi co-location characteristics;

[0160] Among them, PDSCH is in non-SBFD symbols and CORESET is in SBFD symbols.

[0161] An implementation scenario of Example 6: In response to a PRACH transmission triggered by a PDCCH order that triggers a contention-free random access procedure to a secondary cell, or the PDCCH order is from a cell other than the serving cell (i.e., the CORESET of the PDCCH order is not associated with the physical cell ID of the serving cell), the UE can attempt to receive DCI scrambled with the RA-RNTI from the PDCCH in SBFD symbols.

[0162] In the above scenario, further, if the UE determines based on the above method (base station signaling notification or according to an agreed rule) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics, the UE assumes that the CORESET associated with the type1-PDCCH CSS set where the PDCCH where the DCI is located is located and the PDSCH scheduled by the DCI have the same DMRS antenna port QCL characteristics. Wherein, the CORESET is located in the SBFD symbol and the PDSCH is located in the non-SBFD symbol. For example, the UE assumes that there are QCL characteristics between the DMRS port of the CORESET and the DMRS port of the PDSCH in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters.

[0163] In the above scenario, further, if the UE determines, based on the above method (base station signaling or according to an agreed rule), that the first transmission in an SBFD symbol and the second transmission in a non-SBFD symbol do not have the same DMRS antenna port QCL characteristics, the UE MUST NOT assume that the CORESET associated with the type1-PDCCH CSS set in which the PDCCH containing the DCI is located and the PDSCH scheduled by the DCI have the same DMRS antenna port QCL characteristics. The CORESET is located in an SBFD symbol, and the PDSCH is located in a non-SBFD symbol. For example, the UE MUST NOT assume that the DMRS ports of the CORESET and the DMRS ports of the PDSCH have the same QCL characteristics with respect to Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters. In other words, the UE assumes that the CORESET and PDSCH do not have the same DMRS antenna port QCL characteristics. That is, the UE can assume that the CORESET and PDSCH have the same DMRS antenna port QCL characteristics only if the CORESET and PDSCH are in the same symbol type; otherwise, they do not.

[0164] Example 7

[0165] Reference Figure 10 As shown, the method for determining a quasi-co-location relationship in this example further includes:

[0166] Step S910: In response to a random access procedure triggered by a PDCCH order, the UE attempts to receive a PDSCH scheduled by DCI scrambled by RA-RNTI in a PDCCH in a non-SBFD symbol, wherein the PDCCH order triggers the contention-free random access procedure for the SpCell and the PDCCH order is in a SBFD symbol;

[0167] Step S920: In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristic, the UE assumes that the DMRS port of the PDSCH and the DMRS port of the PDCCH order have the quasi-co-location characteristic;

[0168] Alternatively, in step S930, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristic, the UE assumes that the DMRS port of the PDSCH and the DMRS port of the PDCCH order do not have the quasi-co-location characteristic.

[0169] An implementation scenario of Example 7: In response to a random access procedure triggered by a PDCCH order, when the UE receives a DCI-scheduled PDSCH in a PDCCH scrambled by the RA-RNTI in a non-SBFD symbol. The PDCCH order triggers a contention-free random access procedure for the SpCell. The PDCCH order is transmitted in an SBFD symbol.

[0170] In the above scenario, further, if the UE determines, based on the above method (base station signaling or according to an agreed rule), that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics, the UE assumes that the DMRS port for the PDSCH and the DMRS port for the PDCCH order have QCL characteristics in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters, even though they are in different symbol types. The UE can then utilize this QCL characteristic to receive and decode the PDSCH based on the SSB or CSI-RS.

[0171] In the above scenario, further, if the UE determines based on the above method (base station signaling notification or according to an agreed rule) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port QCL characteristics, then the UE is prohibited from assuming that the DMRS port of the PDSCH and the DMRS port of the PDCCH order have QCL characteristics in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters. In other words, the UE believes that the PDSCH and the PDCCH order do not have the same DMRS antenna port QCL characteristics. In other words, only when the PDSCH and the PDCCH order are in the same type of symbol, the UE can assume that the PDSCH and the PDCCH order have the same DMRS antenna port QCL characteristics; otherwise, they do not.

[0172] Example 8

[0173] Reference Figure 11 As shown, the method for determining a quasi-co-location relationship in this example further includes:

[0174] Step S1010: In response to a random access procedure triggered by a PDCCH order, the UE attempts to receive a PDSCH scheduled by DCI scrambled by RA-RNTI in a PDCCH in a SBFD symbol, wherein the PDCCH order triggers a contention-free random access procedure for the SpCell, and the PDCCH order is in a non-SBFD symbol.

[0175] Step S1020: In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristic, the UE assumes that the DMRS port of the PDSCH and the DMRS port of the PDCCH order have the quasi-co-location characteristic;

[0176] Alternatively, in step S1030, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristic, the UE assumes that the DMRS port of the PDSCH and the DMRS port of the PDCCH order do not have the quasi-co-location characteristic.

[0177] An implementation scenario of Example 8: In response to a random access procedure triggered by a PDCCH order, when a UE receives a PDSCH scheduled by DCI in a PDCCH scrambled by an RA-RNTI in an SBFD symbol. The PDCCH order triggers a contention-free random access procedure for the SpCell. The PDCCH order is transmitted in a non-SBFD symbol.

[0178] In the above scenario, further, if the UE determines, based on the above method (base station signaling or according to an agreed rule), that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics, the UE assumes that the DMRS port for the PDSCH and the DMRS port for the PDCCH order have QCL characteristics in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters, even though they are in different symbol types. The UE can then utilize this QCL characteristic to receive and decode the PDSCH based on the SSB or CSI-RS.

[0179] In the above scenario, further, if the UE determines based on the above method (base station signaling notification or according to an agreed rule) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port QCL characteristics, then the UE is prohibited from assuming that the DMRS port of the PDSCH and the DMRS port of the PDCCH order have QCL characteristics in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters. In other words, the UE believes that the PDSCH and the PDCCH order do not have the same DMRS antenna port QCL characteristics. In other words, only when the PDSCH and the PDCCH order are in the same type of symbol, the UE can assume that the PDSCH and the PDCCH order have the same DMRS antenna port QCL characteristics; otherwise, they do not.

[0180] Example 9

[0181] Reference Figure 12 As shown, the method for determining a quasi-co-location relationship in this example further includes:

[0182] Step S1110, in response to a PUSCH transmission scheduled by a RAR UL grant or a fallbackRAR UL grant, or in response to a PUSCH retransmission scheduled by a DCI, the UE attempts to receive another DCI in an SBFD symbol, wherein the DCI is scrambled by a TC-RNTI and the TC-RNTI is provided in a corresponding RAR message, and the PUSCH transmission or PUSCH retransmission is associated with a PRACH transmission (previously) sent by the UE;

[0183] Step S1120: In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH where another DCI in the SBFD symbol is located has the same DMRS antenna port quasi co-location characteristic as the SSB in the non-SBFD symbol;

[0184] Alternatively, in step S1130, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristic, the UE assumes that the PDCCH where another DCI in the SBFD symbol is located does not have the same DMRS antenna port quasi-co-location characteristic as the SSB in the non-SBFD symbol;

[0185] Among them, SSB and PRACH transmission are associated.

[0186] An implementation scenario of Example 9: In response to a PUSCH transmission scheduled by a RAR UL grant or a fallbackRAR UL grant, or in response to a PUSCH retransmission scheduled by a DCI, the UE detects and receives a DCI format in an SBFD symbol. The CRC of the DCI is scrambled by the TC-RNTI provided in the corresponding RAR message. The UE previously sent a PRACH transmission, and the PUSCH transmission or the PUSCH retransmission is associated with the PRACH transmission.

[0187] In the above scenario, further, if the UE determines based on the above method (base station signaling notification or according to an agreed rule) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics, the UE assumes that the PDCCH where the received DCI format is located and the SSB in the non-SBFD symbol have the same DMRS antenna port QCL characteristics. Wherein, the SSB is associated with the PRACH transmission. For example, the UE assumes that the DMRS antenna port of the PDCCH where the received DCI format is located and the DMRS antenna port of the SSB have QCL characteristics in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters.

[0188] In the above scenario, further, if the UE determines based on the above method (base station signaling or according to an agreed rule) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port QCL characteristics, the UE is prohibited from assuming that the PDCCH containing the received DCI format and the SSB in the non-SBFD symbol have the same DMRS antenna port QCL characteristics. The SSB is associated with a PRACH transmission. For example, the UE is prohibited from assuming that the DMRS antenna port of the PDCCH containing the received DCI format and the DMRS antenna port of the SSB have QCL characteristics with respect to Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters. In other words, the UE assumes that the PDCCH containing the received DCI format and the SSB in the non-SBFD symbol do not have the same DMRS antenna port QCL characteristics. In other words, the UE can assume that the DMRS antenna port QCL characteristics between the PDCCH containing the received DCI format and the SSB are the same only if the PDCCH containing the DCI format and the SSB are in the same symbol type; otherwise, they do not.

[0189] Example 10

[0190] Reference Figure 13 As shown, the method for determining a quasi-co-location relationship in this example further includes:

[0191] Step S1210: In response to a PUSCH transmission scheduled by a RAR UL grant or a fallbackRAR UL grant, or in response to a PUSCH retransmission scheduled by a DCI, the UE attempts to receive another DCI in a non-SBFD symbol, wherein the DCI is scrambled by the TC-RNTI and the TC-RNTI is provided in the corresponding RAR message, and the PUSCH transmission or PUSCH retransmission is associated with a PRACH transmission (previously) sent by the UE;

[0192] Step S1220: In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristic, the UE assumes that the PDCCH where another DCI in the non-SBFD symbol is located has the same DMRS antenna port quasi-co-location characteristic as the SSB in the SBFD symbol;

[0193] Alternatively, in step S1230, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristic, the UE assumes that the PDCCH where another DCI in the non-SBFD symbol is located does not have the same DMRS antenna port quasi-co-location characteristic as the SSB in the SBFD symbol;

[0194] Among them, SSB and PRACH transmission are associated.

[0195] An implementation scenario of Example 10: In response to a PUSCH transmission scheduled by a RAR UL grant or a fallbackRAR UL grant, or in response to a PUSCH retransmission scheduled by a DCI, the UE detects and receives a DCI format in a non-SBFD symbol. The CRC of the DCI is scrambled by the TC-RNTI provided in the corresponding RAR message. The UE previously sent a PRACH transmission, and the PUSCH transmission or the PUSCH retransmission is associated with the PRACH transmission.

[0196] In the above scenario, further, if the UE determines based on the above method (base station signaling notification or according to an agreed rule) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics, the UE assumes that the PDCCH where the received DCI format is located and the SSB in the SBFD symbol have the same DMRS antenna port QCL characteristics. Wherein, the SSB is associated with the PRACH transmission. For example, the UE assumes that the DMRS antenna port of the PDCCH where the received DCI format is located and the DMRS antenna port of the SSB have QCL characteristics in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters.

[0197] In the above scenario, further, if the UE determines based on the above method (base station signaling or according to an agreed rule) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port QCL characteristics, the UE is prohibited from assuming that the PDCCH containing the received DCI format and the SSB in the SBFD symbol have the same DMRS antenna port QCL characteristics. Wherein, the SSB is associated with the PRACH transmission. For example, the UE is prohibited from assuming that the DMRS antenna port of the PDCCH containing the received DCI format and the DMRS antenna port of the SSB have QCL characteristics in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters. In other words, the UE assumes that the PDCCH containing the received DCI format and the SSB in the SBFD symbol do not have the same DMRS antenna port QCL characteristics. In other words, the UE can assume that the PDCCH containing the DCI format and the SSB have the same DMRS antenna port QCL characteristics only if the PDCCH containing the DCI format and the SSB are in the same type of symbol; otherwise, they do not.

[0198] Example 11

[0199] An association relationship is configured between the timing of PRACH transmission and the SSB. A PRACH transmission timing is associated with SSBs based on different types of symbols, or an SSB is associated with the timing of PRACH transmission based on different types of symbols. Different types of symbols include SBFD symbols and non-SBFD symbols.

[0200] The method for determining a quasi-co-location relationship in this example further includes:

[0201] In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristic, the UE determines that the association relationship is available;

[0202] Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristic, the UE determines that the association relationship is unavailable;

[0203] Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristic, the UE desires to be separately configured with PRACH transmission timings for the SBFD symbol and the non-SBFD symbol;

[0204] Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristics, the UE expects that the timing of SSB and PRACH transmissions in the same type of symbols can be configured with an association relationship, and the UE expects that the timing of SSB and PRACH transmissions in different types of symbols are not configured with an association relationship.

[0205] An implementation scenario of Example 11: A PRACH transmission timing and an SSB are configured to be associated, for example, one or more PRACH timings are associated with one or more SSB transmissions based on the configuration information of the base station. In this case, based on the association relationship, when the UE receives an SSB, it can determine that a PRACH transmission or a PRACH transmission with repetition is sent from a PRACH timing among the PRACH timings associated with the SSB. A PRACH timing is associated with SSBs in different types of symbols, or an SSB is associated with PRACH timings in different types of symbols. The association relationship can be used to determine the beam relationship between the SSB and the PRACH.

[0206] In the above scenario, further, if the UE determines based on the above method (base station signaling or according to an agreed rule) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics, the UE assumes that the association between the SSB and PRACH opportunities is available / valid, even if they are located in different symbol types; otherwise, the UE assumes that the association between the SSB and PRACH opportunities is not fully available and requires further rule optimization. For example, the UE assumes that the SSB and PRACH opportunities can be associated, or their association is available, only when the SSB and PRACH opportunities are in the same symbol type. In other words, if the symbol type of the SSB is different from the symbol type of the associated PRACH opportunity, the association is not available. In other words, the base station and the UE agree that if transmissions in different symbol types have QCL characteristics, the UE should assume that the SSB and PRACH can be associated, even if the SSB and PRACH are located in different symbol types; otherwise, the UE should not assume that the SSB and PRACH can be associated if the SSB and PRACH are located in different symbol types.

[0207] Alternatively, if the UE determines based on the above method (base station signaling notification or according to agreed rules) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port QCL characteristics, the base station should configure an independent PRACH opportunity for the SBFD symbol, and configure an independent association relationship between the PRACH opportunities in the SSB and SBFD symbols. An SSB should not be configured to be associated with PRACH opportunities in different types of symbols at the same time. Alternatively, if the base station configures the same SSB to be associated with PRACH opportunities in different types of symbols, or the same PRACH opportunity to be associated with SSBs in different types of symbols, the UE considers that different transmissions sent by the base station in different symbol types have the same DMRS antenna port QCL characteristics. This is because, if the base station configures the same SSB to be associated with PRACH opportunities in different types of symbols, it means that the uplink transmissions in different types of symbols use the same antenna panel and / or element. Or because, if the base station configures the same PRACH to be associated with SSB opportunities in different types of symbols, it means that the downlink transmissions in different types of symbols use the same antenna panel and / or element.

[0208] The following provides some specific examples to illustrate the method for determining the quasi co-location relationship with respect to related transmissions after random access.

[0209] Example 12

[0210] Reference Figure 14 As shown, after the RRC connection is established, the quasi-co-location relationship determination method of this example further includes:

[0211] Step S1310: The UE attempts to receive DCI in the PDCCH and attempts to receive the PDSCH scheduled by the DCI for the UE, wherein one of the PDCCH and the PDSCH is transmitted in an SBFD symbol and the other is transmitted in a non-SBFD symbol;

[0212] Step S1320, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH and the PDSCH have the same DMRS antenna port quasi co-location characteristic;

[0213] Alternatively, in step S1330, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH and the PDSCH do not have the same DMRS antenna port quasi co-location characteristic.

[0214] An implementation scenario of Example 12: A UE detects and receives a DCI from a PDCCH, and the DCI schedules a PDSCH for the UE, wherein the PDCCH and the PDSCH are in different types of symbols (ie, SBFD symbols and non-SBFD symbols).

[0215] In the above scenario: Further, if the UE determines based on the above method (base station signaling or according to an agreed rule) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics, then the UE can assume that the PDCCH and the PDSCH have the same DMRS antenna port QCL characteristics. For example, the DMRS antenna port of the PDCCH and the DMRS antenna port of the PDSCH have QCL characteristics in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters.

[0216] In the above scenario: Further, if the UE determines based on the above method (base station signaling notification or according to agreed rules) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port QCL characteristics, the UE cannot assume that the PDCCH and PDSCH have the same DMRS antenna port QCL characteristics. For example, the DMRS antenna port of the PDCCH and the DMRS antenna port of the PDSCH do not have QCL characteristics in terms of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters. That is, the UE believes that the PDCCH and PDSCH do not have the same DMRS antenna port QCL characteristics. That is, only when the PDCCH and PDSCH are in the same type of symbols, the UE can assume that the PDCCH and PDSCH have DMRS antenna port QCL characteristics, otherwise, they do not.

[0217] Example 13

[0218] Reference Figure 15 As shown, after the RRC connection is established, the quasi-co-location relationship determination method of this example further includes:

[0219] Step S1410: The UE attempts to receive a PDSCH scheduled by a DCI in a PDCCH, where the DCI is scrambled by a C-RNTI, SI-RNTI, P-RNTI, G-RNTI, or MCCH-RNTI.

[0220] Step S1420, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the SSB and the PDSCH have the same DMRS antenna port quasi co-location characteristic;

[0221] Alternatively, in step S1430, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the SSB and the PDSCH do not have the same DMRS antenna port quasi co-location characteristic;

[0222] Among them, SSB is one or more SSBs associated with the timing of the UE sending PRACH transmission during the random access process. The SSB and PDSCH are in different types of symbols, and the different types of symbols include SBFD symbols and non-SBFD symbols.

[0223] An implementation scenario of Example 13: A UE receives a PDSCH scheduled by DCI in a PDCCH scrambled by a C-RNTI, SI-RNTI, P-RNTI, G-RNTI, or MCCH-RNTI, and the UE determines / uses one or more SSB(s) during a random access procedure, wherein the SSB(s) and the PDSCH are in different symbol types.

[0224] In the above scenario: Further, if the UE determines based on the above method (base station signaling notification or according to the agreed rules) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics, the UE assumes that the PDSCH and SSB have the same DMRS antenna port QCL characteristics, otherwise, the UE assumes that the PDSCH and SSB do not have the same DMRS antenna port QCL characteristics.

[0225] In the above scenario: Further, if the UE determines based on the above method (base station signaling or according to an agreed rule) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port QCL characteristics, then the UE is prohibited from assuming that the PDSCH and SSB have the same DMRS antenna port QCL characteristics. Otherwise, the UE can assume that the PDSCH and SSB have the same DMRS antenna port QCL characteristics. That is, only when the PDSCH and SSB are in the same type of symbols, the UE can assume that the PDSCH and SSB have the same DMRS antenna port QCL characteristics, otherwise, they do not.

[0226] Example 14

[0227] Reference Figure 16 As shown, after the RRC connection is established, the quasi-co-location relationship determination method of this example further includes:

[0228] Step S1510: The UE attempts to receive a PDSCH scheduled by a DCI in a PDCCH, where the DCI is scrambled by a C-RNTI, SI-RNTI, P-RNTI, G-RNTI, or MCCH-RNTI.

[0229] Step S1520, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH, PDSCH and SSB have the same DMRS antenna port quasi co-location characteristic;

[0230] Alternatively, in step S1520, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH, the PDSCH, and the SSB do not have the same DMRS antenna port quasi co-location characteristic;

[0231] Among them, SSB is one or more SSBs associated with the timing of the UE sending PRACH transmission during the random access process, and PDCCH, PDSCH and SSB are not all in SBFD symbols or non-SBFD symbols.

[0232] An implementation scenario of Example 14: A UE receives a DCI-scheduled PDSCH in a PDCCH scrambled by a C-RNTI, SI-RNTI, P-RNTI, G-RNTI, or MCCH-RNTI, wherein the UE transmits one or more SSB(s) associated with a PRACH transmission timing during a random access procedure. The PDCCH and PDSCH are in different symbol types, the SSB and PDSCH are in different symbol types, the PDCCH and SSB are in the same symbol type, or the SSB, PDSCH, and PDCCH are not all in the same symbol type.

[0233] In the above scenario: Further, if the UE determines based on the above method (base station signaling notification or according to agreed rules) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics, the UE assumes that PDCCH, PDSCH and SSB have the same DMRS antenna port QCL characteristics. Otherwise, the UE assumes that PDCCH and SSB have the same DMRS antenna port QCL characteristics, but the UE assumes that PDCCH and PDSCH do not have the same DMRS antenna port QCL characteristics, and the UE assumes that PDSCH and SSB do not have the same DMRS antenna port QCL characteristics.

[0234] In the above scenario: Further, if the UE determines based on the above method (base station signaling notification or according to an agreed rule) that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port QCL characteristics, then if the above downlink transmissions (i.e., the above PDCCH, PDSCH, and SSB) are in the same type of symbol, the UE considers that they have the same DMRS antenna port QCL characteristics. Otherwise, the UE cannot assume that they have the same DMRS antenna port QCL characteristics and needs to determine them based on the relevant configuration signaling of the QCL characteristics. That is, only if the PDCCH, PDSCH, and SSB are in the same type of symbol, the UE can assume that they have the DMRS antenna port QCL characteristics. Otherwise, they do not.

[0235] Example 15

[0236] In this example, the rules agreed upon between the UE and the base station include at least one of the following:

[0237] Multiple SSBs received by the UE have the same DMRS antenna port quasi-co-location characteristics;

[0238] The UE has the same DMRS antenna port quasi-co-location characteristics for downlink transmission based on different types of symbols during random access;

[0239] The SSB received by the UE has the same DMRS antenna port quasi-co-location characteristics as the downlink transmission;

[0240] Among them, the multiple SSBs include at least one SSB in a non-SBFD symbol, and the SSB in the non-SBFD symbol is associated with the timing of PRACH transmission in the SBFD symbol; downlink transmission includes PDSCH, PDCCH and CSI-RS.

[0241] An implementation scenario of Example 15: A UE receives one or more SSB(s) and, based on the association between the SSB(s) and the PRACH timing, wants to determine a PRACH timing to send a PRACH transmission. The UE determines, based on the above method (base station signaling or according to an agreed rule), that a first transmission in an SBFD symbol and a second transmission in a non-SBFD symbol have the same DMRS antenna port QCL characteristics, and the UE supports sending random access-related transmissions in the SBFD symbol / slot.

[0242] That is, in one implementation scenario, the base station notifies the UE that the DL transmission in the SBFD symbol and the DL transmission in the non-SBFD symbol use the same antenna panel / element. That is, the base station side believes that the DL transmission in the SBFD symbol and the DL transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics. Then, the association between the SSB(s) configured by the base station and the PRACH opportunity is as follows:

[0243] SSB in SBFD symbols can be associated with PRACH opportunities in non-SBFD symbols;

[0244] The SSB in non-SBFD symbols can be associated with the PRACH opportunity in SBFD symbols;

[0245] The PRACH timing in the SBFD symbol and the PRACH timing in the non-SBFD symbol can be simultaneously associated with the SSB in the SBFD symbol (or the SSB in the non-SBFD symbol);

[0246] The PRACH opportunities in SBFD symbols and the PRACH opportunities in non-SBFD symbols can be configured in one PRACH opportunity group;

[0247] The SSB in an SBFD symbol and the SSB in a non-SBFD symbol can be simultaneously associated with a PRACH opportunity in an SBFD symbol (or a PRACH opportunity in a non-SBFD symbol);

[0248] SSB in SBFD symbols and SSB in non-SBFD symbols can be configured in one SSB group.

[0249] Correspondingly, the UE side also supports the above-mentioned base station side configuration by default. Alternatively, the UE side detects the above-mentioned base station configuration and considers that the DL transmission in the SBFD symbol and the DL transmission in the non-SBFD symbol have the same DMRS antenna port QCL characteristics.

[0250] In the above scenario: Further, if the UE determines to send a PRACH transmission in a PRACH opportunity in an SBFD symbol, and the PRACH opportunity is configured to be associated with one or more SSB(s) including at least an SSB in a non-SBFD symbol, then the UE is considered by the base station to be able to support related transmissions of the random access procedure in different types of symbols (SBFD symbols and non-SBFD symbols). Related transmissions include: PRACH transmission, PRACH transmission + PUSCH transmission (which is the first step in Type-2 random access procedure, that is, PRACH transmission and PUSCH transmission are sent successively, see TS38.213 for details), DCI-scheduled PDSCH corresponding to the PRACH transmission and scrambled by RA-RNTI, DCI-scheduled PDSCH scrambled by MsgB-RNTI, PUSCH corresponding to the PDSCH and scheduled by RAR UL grant, PDSCH corresponding to the PUSCH and scrambled by TC-RNTI, and HARQ-ACK PUCCH corresponding to the DCI-scheduled PDSCH scrambled by TC-RNTI.

[0251] For example, in the SBFD symbol in which the PRACH transmission is transmitted, the DCI-scheduled PDSCH corresponding to the PRACH transmission and scrambled by the RA-RNTI is transmitted in the non-SBFD symbol, the PUSCH corresponding to the PDSCH and scheduled by the RAR UL grant is transmitted in the non-SBFD symbol, the DCI-scheduled PDSCH corresponding to the PUSCH and scrambled by the TC-RNTI is transmitted in the SBFD symbol, and the HARQ-ACK PUCCH corresponding to the DCI-scheduled PDSCH scrambled by the TC-RNTI is transmitted in the non-SBFD symbol. Furthermore, the UE can assume that the downlink transmissions in the random access procedure have the same DMRS antenna port QCL characteristics. The UE can assume that the downlink transmissions in the random access procedure have the same DMRS antenna port QCL characteristics as the SSB(s) associated with the PRACH opportunity in which the PRACH transmission is located. That is, in the above scenario, the UE determines to use a PRACH opportunity for PRACH transmission, and at least one of the SSB(s) associated with the PRACH opportunity is in a different type of symbol from the PRACH transmission, then the base station and the UE agree on at least one of the following: the SSB(s) have the same DMRS antenna port QCL characteristics (SSB(s) are allowed to be in different types of symbols), the relevant transmissions of the UE during the random access process can be performed separately in different types of symbols, the downlink transmissions of the UE in different types of symbols have the same DMRS antenna port QCL characteristics, and the downlink transmissions of the UE in different types of symbols have the same DMRS antenna port QCL characteristics as the SSB(s). Among them, the related transmissions of the random access process include uplink and downlink, such as PRACH transmission, PRACH transmission and PUSCH transmission, DCI-scheduled PDSCH scrambled by RA-RNTI, DCI-scheduled PDSCH scrambled by MsgB-RNTI, PUSCH scheduled by RARUL grant, PDSCH scheduled by TC-RNTI, and HARQ-ACK PUCCH of PDSCH scheduled by TC-RNTI.

[0252] Furthermore, based on the above method, after the UE accesses the network, for example, when the UE switches to the RRC connected state, the base station and the UE can still assume that the UE's downlink transmissions (including PDSCH, PDCCH, and CSI-RS) in different types of symbols have the same DMRS antenna port QCL characteristics, and that the downlink transmissions (including PDSCH, PDCCH, and CSI-RS) and SSB(s) have the same DMRS antenna port QCL characteristics. Among them, SSB(s) are associated with the PRACH timing used when the UE successfully accesses the network. Of course, if the base station further independently configures the DMRS antenna port QCL characteristics for downlink transmission and SSB(s), the new QCL characteristics are implemented.

[0253] In summary, in existing systems, base stations use the same antenna panels and elements for downlink transmissions, including control channels, data channels, and common channels. Therefore, these channels can be configured or assumed to have the same DMRS antenna port QCL characteristics. However, after SBFD operation is supported, the antenna panels and / or elements used by the base station for downlink transmissions in SBFD symbols / slots (DL subbands) and in non-SBFD symbols / slots (DL BWPs) may be different (or the same). This may result in downlink transmissions in the two types of symbols not having the same DMRS antenna port QCL characteristics. For example, differences in the physical properties of different antenna panels, or different elements of the same antenna panel, may result in transmissions based on them not having the same DMRS antenna port QCL characteristics. The DL and UL subbands for SBFD operation are configured in the DL BWP.

[0254] Therefore, in light of the aforementioned characteristics of SBFD operation, the UE needs to know the antenna panels and / or elements used by the base station for transmissions in SBFD and non-SBFD symbols when implementing SBFD operation. Generally, different transmissions performed using the same panel and / or element can be considered to have the same DMRS antenna port QCL characteristics. Alternatively, the base station can directly notify the UE that transmissions performed in SBFD and non-SBFD symbols have or do not have the same DMRS antenna port QCL characteristics. In this case, even if the base station actually uses different antenna panels or elements for transmissions in different symbol types, if the antenna panels or elements can still achieve QCL characteristics, the base station can still notify or agree with the UE that the transmissions have the same DMRS antenna port QCL characteristics. Therefore, the base station notifying the UE that different transmissions in SBFD and non-SBFD symbols have or do not have the same DMRS antenna port QCL characteristics is applicable to more implementation methods and is more flexible. This notification can be provided using system broadcast information, such as notification in the SSB, SIB1, or other SIBs. Alternatively, corresponding parameters can be introduced in the signaling of the SBFD subband configuration for notification.

[0255] To reduce signaling, when the base station configures the SBFD subband but does not send this notification signaling, the UE assumes that the base station has the same DMRS antenna port QCL characteristics between transmissions performed in SBFD symbols and non-SBFD symbols. Accordingly, when the base station sends this notification signaling, the UE assumes that the base station does not have the same DMRS antenna port QCL characteristics between transmissions performed in SBFD symbols and non-SBFD symbols, and instead determines whether the transmissions have the same DMRS antenna port QCL characteristics based on other relevant configuration signaling.

[0256] To reduce signaling, when the base station configures an SBFD subband but does not send this notification signaling, the UE assumes that the base station does not have the same DMRS antenna port QCL characteristics between transmissions performed in SBFD symbols and non-SBFD symbols. Instead, the UE determines whether the transmissions have the same DMRS antenna port QCL characteristics based on other relevant configuration signaling. Accordingly, when the base station sends this notification signaling, the UE assumes that the base station has the same DMRS antenna port QCL characteristics between transmissions performed in SBFD symbols and non-SBFD symbols.

[0257] An embodiment of the present application also provides a quasi-co-location relationship determination device, comprising at least one processor and a memory for communicating with the at least one processor; the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the aforementioned quasi-co-location relationship determination method.

[0258] Therefore, the UE of the embodiment of the present application determines whether the transmissions in different types of symbols (SBFD symbols and non-SBFD symbols) have the same DMRS antenna port QCL characteristics according to the notification or agreed rules of the base station. A specific notification method is given:

[0259] After determining that the above-mentioned QCL characteristics exist between transmissions, the above-mentioned QCL characteristics are applied to each transmission in the random access process, and rules for determining the QCL characteristics of the DMRS antenna port between each transmission and between the SSB are provided.

[0260] After determining that the transmissions do not have the QCL characteristics, the QCL characteristics are applied to each transmission in the random access process, and a rule for determining the QCL characteristics between each transmission is provided.

[0261] The above-determined QCL characteristics are also applied to each transmission after random access, and a rule for determining the QCL characteristics between each transmission is provided.

[0262] Reference Figure 17 , taking the example that the control processor 1001 and the memory 1002 in the quasi-co-location relationship determination device 1000 can be connected via a bus. The memory 1002, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer executable programs. In addition, the memory 1002 may include a high-speed random access memory, and may also include a non-transitory memory, such as at least one disk memory, a flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory 1002 may optionally include a memory remotely arranged relative to the control processor 1001, and these remote memories may be connected to the quasi-co-location relationship determination device 1000 via a network. Examples of the above-mentioned networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0263] Those skilled in the art will understand that Figure 17 The device structure shown in the figure does not constitute a limitation of the device 1000 for determining the alignment co-location relationship, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0264] The embodiment of the present application further provides a computer-readable storage medium, which stores computer-executable instructions, which are executed by one or more control processors, for example, Figure 17 Execution by one of the control processors 1001 may enable the one or more control processors to execute the quasi co-location relationship determination method in the above method embodiment.

[0265] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, i.e., they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of this embodiment.

[0266] Those skilled in the art will appreciate that all or some of the steps and systems in the method disclosed above can be implemented as software, firmware, hardware, and appropriate combinations thereof. Some physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, and the computer-readable medium can include computer storage media (or non-transitory media) and communication media (or temporary media). As known to those skilled in the art, the term computer storage media is included in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data) and is volatile and non-volatile, removable, and non-removable. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory, or other memory technology, CD-ROM, digital versatile disks (DVD), or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage, or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, as is well known to those skilled in the art, communication media typically embodies computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0267] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above implementation mode. Technical personnel familiar with the field can also make various equivalent modifications or substitutions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A method for determining a quasi-co-location relationship, characterized in that: include: The UE determines, according to the indication notification sent by the base station or the rule agreed upon with the base station, whether the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristic or not.

2. A method for determining a quasi-co-location relationship, characterized in that: include: The base station sends an indication notification or an agreed rule to the UE, so that the UE determines, according to the indication notification or the rule agreed with the base station, whether the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristic.

3. The method for determining a quasi-co-location relationship according to claim 1 or 2, wherein: The indication notification includes a signaling notification sent by the base station via signaling and / or a broadcast notification sent through system broadcast information; the method further includes: The UE receives the signaling notification, where the signaling notification is used to notify the UE that the first transmission and the second transmission have or do not have the same DMRS antenna port quasi-co-location characteristic, or is used to provide antenna panel information, so that the UE determines, according to the antenna panel information, that the first transmission and the second transmission have or do not have the same DMRS antenna port quasi-co-location characteristic; or, The UE receives the broadcast notification, where the broadcast notification is used to notify the UE that the first transmission and the second transmission have or do not have the same DMRS antenna port quasi-co-location characteristics, or to instruct the UE to determine whether the first transmission and the second transmission have or do not have the same DMRS antenna port quasi-co-location characteristics according to the quasi-co-location relationship in the current protocol.

4. The method for determining a quasi-co-location relationship according to claim 3, wherein: The antenna panel information includes at least one of the following: identification of antenna panels; the number of elements of the antenna panel; Position of elements of the antenna panel; Antenna port identifier.

5. The method for determining a quasi-co-location relationship according to claim 3, wherein: The signaling notification includes at least one of the following: Notifications sent via RRC signaling; Notification sent via MAC CE signaling; Notification sent via DCI in PDCCH.

6. The method for determining a quasi-co-location relationship according to claim 5, wherein: The DCI includes at least one of the following: DCI for scheduling PDSCH; Activate the DCI configured by SPS; DCI for activating dormancy; Deactivate the DCI configured by SPS; Deactivate DCI of CG PDSCH; Activate DCI for CG PUSCH; DCI used to trigger HARQ-ACK codebook retransmission.

7. The method for determining a quasi-co-location relationship according to claim 5, wherein: The RRC signaling includes at least one of the following: RRC signaling for configuring SPS configuration; RRC signaling used to configure PDSCH time domain resources; RRC signaling for configuring DMRS for PDSCH; RRC signaling for configuring PDCCH resources; RRC signaling for configuring DMRS for PDCCH; RRC signaling for configuring SBFD subband, UL subband or DL subband; RRC signaling used to configure CG PUSCH; RRC signaling for configuring PUCCH; Custom RRC signaling used to configure the first transmission and the second transmission to have or not have the same DMRS antenna port quasi co-location characteristic.

8. The method for determining a quasi-co-location relationship according to claim 3, wherein: The broadcast notification includes at least one of the following messages: SSB; SIB1; SIB2; Customized SIB.

9. The method for determining a quasi-co-location relationship according to claim 1 or 2, wherein: The first transmission and the second transmission are one of the following transmissions: Transmission of downlink data; Downlink control transmission; Transmission corresponding to the downlink transmission common channel; Transmission corresponding to the downlink parameter signal.

10. The method for determining a quasi-co-location relationship according to claim 1 or 2, wherein: The rule agreed upon by the UE and the base station is specifically that the UE determines whether the first transmission and the second transmission have the same DMRS antenna port quasi-co-location characteristics based on the symbol type of the first transmission and the symbol type of the second transmission.

11. The method for determining a quasi-co-location relationship according to claim 10, wherein: The method further comprises: When the base station configures the SBFD subband and the UE does not receive the indication notification, the UE defaults that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristic; In response to the UE receiving the indication notification, the UE determines that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristics, or the UE determines, based on the content of the indication notification, that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have or do not have the same DMRS antenna port quasi-co-location characteristics.

12. The method for determining a quasi-co-location relationship according to claim 10, wherein: The method further comprises: When the base station configures the SBFD subband and the UE does not receive the indication notification, the UE defaults that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristic; In response to the UE receiving the indication notification, the UE determines that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristics, or the UE determines, based on the content of the indication notification, that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have or do not have the same DMRS antenna port quasi-co-location characteristics.

13. The method for determining a quasi-co-location relationship according to claim 1 or 2, wherein: The method further comprises: In response to the UE sending a PRACH transmission to the base station in a SBFD symbol, the UE attempts to receive a DCI-scheduled PDSCH scrambled by the RA-RNTI or MSGB-RNTI in a non-SBFD symbol, wherein the PRACH transmission is associated with at least one SSB or CSI-RS resource, and the SSB or CSI-RS resource is in the SBFD symbol; In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDSCH and the SSB or CSI-RS resource have the same DMRS antenna port quasi co-location characteristic; Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristic, the UE assumes that the PDSCH and the SSB or CSI-RS resource do not have the same DMRS antenna port quasi-co-location characteristic.

14. The method for determining a quasi-co-location relationship according to claim 1 or 2, wherein: The method further comprises: In response to the UE sending a PRACH transmission to the base station in a non-SBFD symbol, the UE attempts to receive a DCI-scheduled PDSCH scrambled by the RA-RNTI or MSGB-RNTI in the SBFD symbol, wherein the PRACH transmission is associated with at least one SSB or CSI-RS resource, and the SSB or CSI-RS resource is in the non-SBFD symbol; In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDSCH and the SSB or CSI-RS resource have the same DMRS antenna port quasi co-location characteristic; Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristic, the UE assumes that the PDSCH and the SSB or CSI-RS resource do not have the same DMRS antenna port quasi-co-location characteristic.

15. The method for determining a quasi-co-location relationship according to claim 1 or 2, wherein: The method further comprises: In response to a PRACH transmission triggered by a PDCCH order, the UE attempts to receive DCI scrambled by the RA-RNTI from the PDCCH in a non-SBFD symbol, wherein the PDCCH order triggers a contention-free random access procedure for SpCel 1 and the PDCCH order is transmitted in a SBFD symbol; In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH and the PDCCH order have the same DMRS antenna port quasi co-location characteristic; Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH and the PDCCH order do not have the same DMRS antenna port quasi co-location characteristic.

16. The method for determining a quasi-co-location relationship according to claim 1 or 2, wherein: The method further comprises: In response to a PRACH transmission triggered by a PDCCH order, the UE attempts to receive DCI scrambled by the RA-RNTI from the PDCCH in an SBFD symbol, wherein the PDCCH order triggers a contention-free random access procedure for SpCel 1 and the PDCCH order is transmitted in a non-SBFD symbol; In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH and the PDCCH order have the same DMRS antenna port quasi co-location characteristic; Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH and the PDCCH order do not have the same DMRS antenna port quasi co-location characteristic.

17. The method for determining a quasi-co-location relationship according to claim 1 or 2, wherein: The method further comprises: In response to a PRACH transmission triggered by a PDCCH order, the UE attempts to receive DCI scrambled by the RA-RNTI from the PDCCH in a non-SBFD symbol, wherein the PDCCH order triggers a contention-free random access procedure for a secondary cell l, or the CORESET of the PDCCH order is not associated with the physical cell l ID of the UE's serving cell; In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the CORESET associated with the type1-PDCCH CSS set corresponding to the PDCCH where the DCI is located and the PDSCH scheduled by the DCI have the same DMRS antenna port quasi co-location characteristic; Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have different DMRS antenna port quasi co-location characteristics, the UE assumes that the CORESET associated with the type1-PDCCH CSSset corresponding to the PDCCH where the DCI is located and the PDSCH scheduled by the DCI have different DMRS antenna port quasi co-location characteristics; The PDSCH is in an SBFD symbol, and the CORESET is in a non-SBFD symbol.

18. The method for determining a quasi-co-location relationship according to claim 1 or 2, wherein: The method further comprises: In response to a PRACH transmission triggered by a PDCCH order, the UE attempts to receive DCI scrambled by the RA-RNTI from the PDCCH in an SBFD symbol, wherein the PDCCH order triggers a contention-free random access procedure for a secondary cell l, or the CORESET of the PDCCH order is not associated with the physical cell l ID of the UE's serving cell; In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the CORESET associated with the type1-PDCCH CSS set corresponding to the PDCCH where the DCI is located and the PDSCH scheduled by the DCI have the same DMRS antenna port quasi co-location characteristic; Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have different DMRS antenna port quasi co-location characteristics, the UE assumes that the CORESET associated with the type1-PDCCH CSSset corresponding to the PDCCH where the DCI is located and the PDSCH scheduled by the DCI have different DMRS antenna port quasi co-location characteristics; The PDSCH is in a non-SBFD symbol, and the CORESET is in a SBFD symbol.

19. The method for determining a quasi-co-location relationship according to claim 1 or 2, wherein: The method further comprises: In response to a random access procedure triggered by a PDCCH order, the UE attempts to receive a PDSCH scheduled by DCI scrambled by the RA-RNTI in the PDCCH in a non-SBFD symbol, wherein the PDCCH order triggers the contention-free random access procedure for SpCel l, and the PDCCH order is in a SBFD symbol; In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the DMRS port of the PDSCH and the DMRS port of the PDCCH order have the quasi co-location characteristic; Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristic, the UE assumes that the DMRS port of the PDSCH and the DMRS port of the PDCCH order do not have the quasi-co-location characteristic.

20. The method for determining a quasi-co-location relationship according to claim 1 or 2, wherein: The method further comprises: In response to a random access procedure triggered by a PDCCH order, the UE attempts to receive a PDSCH scheduled by DCI scrambled by the RA-RNTI in the PDCCH in a SBFD symbol, wherein the PDCCH order triggers the contention-free random access procedure for the SpCell and the PDCCH order is in a non-SBFD symbol; In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the DMRS port of the PDSCH and the DMRS port of the PDCCH order have the quasi co-location characteristic; Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristic, the UE assumes that the DMRS port of the PDSCH and the DMRS port of the PDCCH order do not have the quasi-co-location characteristic.

21. The method for determining a quasi-co-location relationship according to claim 1 or 2, wherein: The method further comprises: In response to a PUSCH transmission scheduled by a RAR UL grant or a fallbackRAR UL grant, or in response to a PUSCH retransmission scheduled by a DCI, the UE attempts to receive another DCI in an SBFD symbol, wherein the DCI is scrambled with a TC-RNTI and the TC-RNTI is provided in the corresponding RAR message, and the PUSCH transmission or the PUSCH retransmission is associated with a PRACH transmission sent by the UE; In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH where the other DCI in the SBFD symbol is located has the same DMRS antenna port quasi co-location characteristic as the SSB in the non-SBFD symbol; Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristic, the UE assumes that the PDCCH where the other DCI in the SBFD symbol is located does not have the same DMRS antenna port quasi-co-location characteristic as the SSB in the non-SBFD symbol; The SSB is associated with the PRACH transmission.

22. The method for determining a quasi-co-location relationship according to claim 1 or 2, wherein: The method further comprises: In response to a PUSCH transmission scheduled by a RAR UL grant or a fallbackRAR UL grant, or in response to a PUSCH retransmission scheduled by a DCI, the UE attempts to receive another DCI in a non-SBFD symbol, wherein the DCI is scrambled with a TC-RNTI and the TC-RNTI is provided in a corresponding RAR message, and the PUSCH transmission or the PUSCH retransmission is associated with a PRACH transmission sent by the UE; In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH where the other DCI in the non-SBFD symbol is located has the same DMRS antenna port quasi co-location characteristic as the SSB in the SBFD symbol; Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristic, the UE assumes that the PDCCH where the other DCI in the non-SBFD symbol is located does not have the same DMRS antenna port quasi-co-location characteristic as the SSB in the SBFD symbol; The SSB is associated with the PRACH transmission.

23. The method for determining a quasi-co-location relationship according to claim 1 or 2, wherein: An association relationship is configured between a PRACH transmission timing and the SSB, wherein one PRACH transmission timing is associated with an SSB based on different types of symbols, or one SSB is associated with a PRACH transmission timing based on different types of symbols, wherein the different types of symbols include SBFD symbols and non-SBFD symbols; the method comprising: In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi-co-location characteristic, the UE determines that the association relationship is available; Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristic, the UE determines that the association relationship is unavailable; Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristic, the UE desires to be separately configured with PRACH transmission timings for the SBFD symbol and the non-SBFD symbol; Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi-co-location characteristics, the UE expects that the timing of SSB and PRACH transmissions in the same type of symbols can be configured with an association relationship, and the UE expects that the timing of SSB and PRACH transmissions in different types of symbols are not configured with an association relationship.

24. The method for determining a quasi-co-location relationship according to claim 1 or 2, wherein: After establishing the RRC connection, the method further includes: The UE attempts to receive DCI in a PDCCH and attempts to receive a PDSCH scheduled by the DCI for the UE, wherein one of the PDCCH and the PDSCH is transmitted in a SBFD symbol and the other is transmitted in a non-SBFD symbol; In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH and the PDSCH have the same DMRS antenna port quasi co-location characteristic; Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH and the PDSCH do not have the same DMRS antenna port quasi co-location characteristic.

25. The method for determining a quasi-co-location relationship according to claim 1 or 2, wherein: After establishing the RRC connection, the method further includes: The UE attempts to receive a PDSCH scheduled by a DCI in a PDCCH, where the DCI is scrambled by a C-RNTI, SI-RNTI, P-RNTI, G-RNTI, or MCCH-RNTI. In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the SSB and the PDSCH have the same DMRS antenna port quasi co-location characteristic; Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the SSB and the PDSCH do not have the same DMRS antenna port quasi co-location characteristic; The SSB is one or more SSBs associated with the timing of the UE sending PRACH transmission during the random access process, and the SSB and the PDSCH are in different types of symbols respectively, and the different types of symbols include SBFD symbols and non-SBFD symbols.

26. The method for determining a quasi-co-location relationship according to claim 1 or 2, wherein: After establishing the RRC connection, the method further includes: The UE attempts to receive a PDSCH scheduled by a DCI in a PDCCH, where the DCI is scrambled by a C-RNTI, SI-RNTI, P-RNTI, G-RNTI, or MCCH-RNTI. In response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH, the PDSCH and the SSB have the same DMRS antenna port quasi co-location characteristic; Alternatively, in response to the UE determining that the first transmission in the SBFD symbol and the second transmission in the non-SBFD symbol do not have the same DMRS antenna port quasi co-location characteristic, the UE assumes that the PDCCH, the PDSCH, and the SSB do not have the same DMRS antenna port quasi co-location characteristic; The SSB is one or more SSBs associated with the timing of the UE sending PRACH transmission during the random access process, and the PDCCH, the PDSCH and the SSB are not all in the SBFD symbol or the non-SBFD symbol.

27. The method for determining a quasi-co-location relationship according to claim 1 or 2, wherein: The rule agreed upon between the UE and the base station includes at least one of the following: Multiple SSBs received by the UE have the same DMRS antenna port quasi-co-location characteristics; The UE has the same DMRS antenna port quasi-co-location characteristics for downlink transmission based on different types of symbols during random access; The SSB received by the UE has the same DMRS antenna port quasi-co-location characteristics as the downlink transmission; Among them, the multiple SSBs include at least one SSB in a non-SBFD symbol, and the SSB in the non-SBFD symbol is associated with the timing of PRACH transmission in the SBFD symbol; the downlink transmission includes PDSCH, PDCCH and CSI-RS.

28. A device for determining a quasi-co-location relationship, characterized in that: It includes at least one processor and a memory for communicating with the at least one processor; the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the quasi-co-location relationship determination method as described in any one of claims 1 to 27.

29. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the quasi-co-location relationship determination method according to any one of claims 1 to 27.

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