Method performed by a user equipment and user equipment

Abstract

The application provides an uplink signal sending method, a downlink signal receiving method, a random access resource configuration method and a user equipment. A method for sending an uplink signal by a user equipment (UE) comprises: determining a first symbol position of an uplink signal OFDM symbol for sending an uplink signal on an uplink bandwidth according to an uplink signal sending parameter for sending an uplink signal; determining a relevant OFDM symbol on a downlink bandwidth corresponding to the uplink bandwidth according to the determined first symbol position; and not receiving a downlink signal whose used OFDM symbol overlaps at least one of the determined relevant OFDM symbols in a time domain, and / or not receiving a downlink signal using the determined relevant OFDM symbol, the uplink bandwidth and the downlink bandwidth not overlapping.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and more specifically to methods performed by user equipment and corresponding user equipment. Specifically, the methods performed by the user equipment include an uplink signal transmission method, a downlink signal reception method, and a random access resource configuration method. Background Technology

[0002] In 5G / NR networks, a type of device with reduced capabilities is defined to address requirements such as reducing antenna count and bandwidth, decreasing terminal implementation complexity, lowering costs, reducing device size, and increasing battery life. This device can be deployed in various scenarios including industrial sensor networks, smart city construction, industrial and agricultural video surveillance, wearable devices, and medical monitoring equipment. Introducing this device into the network can further enhance network deployment flexibility, improve productivity and efficiency, reduce costs, improve operational security, and ensure that it meets service requirements in various typical scenarios, such as speed and reliability.

[0003] One way to reduce capability is to use half-duplex data transmission. Terminals using this half-duplex data transmission, or those without full-duplex capability, can transmit data at different times on the uplink and downlink bandwidths of a cell using paired spectrum. Unlike existing full-duplex terminals, these terminals transmit data on the uplink or downlink bandwidths separately at different times, and do not support simultaneous data transmission on both bandwidths. Therefore, the network and terminals need to coordinate and control data transmission in different directions to ensure that the network and terminals correctly understand the signal transmission method and implement the correct service process.

[0004] In addition, the new requirements place more demands on network transmission, especially in the need for terminal devices to obtain receiving capabilities that match the services under constraints such as smaller size, lower processing complexity, fewer antennas, and smaller bandwidth. These all require improvements to existing air interface resource allocation methods and channel transmission methods. Summary of the Invention

[0005] To address at least some of the aforementioned problems, this invention provides an uplink signal transmission method, a downlink signal reception method, a random access resource configuration method, and a user equipment executed by a user equipment. This effectively avoids uplink and downlink conflicts when terminals without full-duplex capability transmit data on paired spectrums, and enables related service transmission, thereby improving network service capabilities, expanding network compatibility, and significantly reducing the cost of communication network deployment.

[0006] According to the present invention, a method for transmitting uplink signals performed by a user equipment (UE) is proposed, comprising: determining a first symbol position of an uplink signal OFDM symbol for transmitting the uplink signal on an uplink bandwidth according to uplink signal transmission parameters for transmitting the uplink signal; determining a related OFDM symbol on a downlink bandwidth corresponding to the determined uplink bandwidth according to the determined first symbol position; and not receiving a downlink signal in the time domain that overlaps with at least one of the determined related OFDM symbols, and / or not using the determined related OFDM symbols to receive the downlink signal, wherein the uplink bandwidth and the downlink bandwidth do not overlap.

[0007] Optionally, the relevant OFDM symbol includes at least one of the following: an OFDM symbol in the downlink bandwidth that overlaps with the uplink signal OFDM symbol in the time domain; an OFDM symbol in the downlink bandwidth that overlaps with at least one of the N1 OFDM symbols preceding the uplink signal OFDM symbol in the time domain, where N1 is a natural number and is determined based on at least one of the following: the handover time of the UE from downlink to uplink operating state, the network timing offset value in the network where the UE is located, and the larger value of the SCS used by the uplink bandwidth and the SCS used by the downlink bandwidth; an OFDM symbol in the downlink bandwidth that overlaps with at least one of the N2 OFDM symbols following the uplink signal OFDM symbol in the time domain, where N2 is a natural number and is determined based on at least one of the following: the handover time of the UE from uplink to downlink operating state, the network timing offset value in the network where the UE is located, and the larger value of the SCS used by the uplink bandwidth and the SCS used by the downlink bandwidth.

[0008] Optionally, the value of N1 may include multiple N1 values, and the method further includes: selecting one of the multiple N1 values ​​as the value of N1 based on the network timing offset value and / or the bandwidth SCS parameter. Furthermore, the value of N2 may include multiple N2 values, and the method further includes: selecting one of the multiple N2 values ​​as the value of N2 based on the network timing offset value and / or the bandwidth SCS parameter.

[0009] According to another aspect of the present invention, a method for receiving downlink signals performed by a user equipment (UE) is also provided, comprising: determining a second symbol position of a downlink signal OFDM symbol for receiving the downlink signal in a downlink bandwidth based on downlink signal reception parameters for receiving the downlink signal; determining a related OFDM symbol in an uplink bandwidth corresponding to the downlink bandwidth based on the determined second symbol position; and not transmitting an uplink signal in the time domain that overlaps with at least one of the related OFDM symbols, and / or not transmitting the uplink signal using the determined related OFDM symbol, wherein the uplink bandwidth and the downlink bandwidth do not overlap.

[0010] Optionally, the relevant OFDM symbol includes at least one of the following: an OFDM symbol in the uplink bandwidth that overlaps with the downlink signal OFDM symbol in the time domain; an OFDM symbol in the uplink bandwidth that overlaps with at least one of the N2 OFDM symbols preceding the downlink signal OFDM symbol in the time domain, where N2 is a natural number and is determined based on at least one of the following: the handover time of the UE from the uplink operating state to the downlink operating state, the network timing offset value in the network where the UE is located, and the larger value of the SCS used by the uplink bandwidth and the SCS used by the downlink bandwidth; an OFDM symbol in the downlink bandwidth that overlaps with at least one of the N1 OFDM symbols following the downlink signal OFDM symbol in the time domain, where N1 is a natural number and is determined based on at least one of the following: the handover time of the UE from the downlink operating state to the uplink operating state, the network timing offset value in the network where the UE is located, and the larger value of the SCS used by the uplink bandwidth and the SCS used by the downlink bandwidth.

[0011] Optionally, the value of N1 may include multiple N1 values, and the method further includes: selecting one of the multiple N1 values ​​as the value of N1 based on the network timing offset value and / or the bandwidth SCS parameter. Furthermore, the value of N2 may include multiple N2 values, and the method further includes: selecting one of the multiple N2 values ​​as the value of N2 based on the network timing offset value and / or the bandwidth SCS parameter.

[0012] According to another aspect of the present invention, a method for configuring resources for random access, performed by a user equipment (UE), is also provided, comprising: determining effective uplink channel resources in the uplink bandwidth that can be used to transmit uplink random access signals; selecting from the effective uplink channel resources to configure uplink random access channel resources for transmitting uplink random access signals; and at least when transmitting the uplink random access signals using the uplink random access channel resources, not receiving downlink signals on OFDM that overlap in the time domain with the OFDM symbols used by the uplink random access channel resources, wherein the uplink bandwidth and the corresponding downlink bandwidth do not overlap.

[0013] Optionally, determining the effective uplink channel resources available for random access includes at least one of the following: determining the effective uplink channel resources as those whose used OFDM symbols do not overlap with at least one of the OFDM symbols used by the downlink synchronization system signal; determining the effective uplink channel resources as those whose used OFDM symbols overlap with at least one of the OFDM symbols used by the downlink synchronization system signal; and determining the effective uplink channel resources as those whose used OFDM symbols do not overlap in the time domain with at least one of the N1 OFDM symbols following the OFDM symbols used for receiving downlink random access signals in the downlink bandwidth. The channel resources are not determined as the effective uplink channel resources, where N1 is a natural number and is determined based on the handover time of the UE from the downlink operating state to the uplink operating state and the network timing offset value in the network in which the UE is located; uplink channel resources that do not overlap in the time domain with at least one of the N2 OFDM symbols preceding the OFDM symbols used to receive downlink random access signals in the downlink bandwidth are not determined as the effective uplink channel resources, where N2 is a natural number and is determined based on the handover time of the UE from the uplink operating state to the downlink operating state and the network timing offset value in the network in which the UE is located.

[0014] Optionally, at least when transmitting the uplink random access signal using the uplink random access channel resources, not receiving downlink signals on OFDM that overlaps in the time domain with the OFDM symbols used by the uplink random access channel resources includes: during the period when the uplink random access signal is not transmitted using the uplink random access channel resources, allowing reception of common downlink signals on OFDM that overlaps in the time domain with the OFDM symbols used by the uplink random access channel resources.

[0015] Optionally, the OFDM symbols in the network where the UE is located are defined as types, including uplink, downlink, and flexible. Determining the effective uplink channel resources available for random access includes at least one of the following: determining the effective uplink channel resources according to the time slot format configured by the network device; not determining uplink channel resources that overlap with at least one of the OFDM symbols determined to be flexible in the uplink bandwidth as effective uplink channel resources; not determining uplink channel resources that overlap with at least one of the OFDM symbols determined to be downlink in the downlink bandwidth as effective uplink channel resources.

[0016] Furthermore, according to another aspect of the present invention, a user equipment is provided, comprising: a processor; and a memory storing instructions, wherein the instructions, when executed by the processor, perform the methods described above.

[0017] According to the present invention, uplink and downlink conflicts can be effectively avoided when terminals without full-duplex capability transmit data on paired spectrum, and related service transmissions can be carried out, thereby improving the service capabilities of the network, expanding the network compatibility, and greatly reducing the cost of communication network deployment. Attached Figure Description

[0018] The above and other features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, wherein:

[0019] Figure 1 It is a diagram used to illustrate the timing relationship between uplink frames and downlink frames.

[0020] Figure 2 It is a diagram used to illustrate the alignment relationship between the uplink OFDM symbols and the downlink OFDM symbols.

[0021] Figure 3 This is a flowchart illustrating an embodiment of the uplink signal transmission method of the present invention.

[0022] Figure 4 This is a schematic diagram used to illustrate the determination of N1 symbols before sending the uplink signal.

[0023] Figure 5 This is a schematic diagram used to illustrate the N2 symbols after determining the uplink signal to be sent.

[0024] Figure 6 This is a flowchart illustrating a downlink signal receiving method according to an embodiment of the present invention.

[0025] Figure 7 This is a flowchart illustrating a method for configuring resources for random access according to an embodiment of the present invention.

[0026] Figure 8 This is a schematic diagram illustrating the determination of N1 symbols before sending an uplink random access signal in a method for configuring resources for random access.

[0027] Figure 9 This is a schematic diagram used to illustrate the determination of N2 symbols after sending the uplink random access signal in the method of configuring resources for random access.

[0028] Figure 10 This is a schematic block diagram illustrating the user equipment involved in the present invention. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the present invention should not be limited to the specific embodiments described below; these embodiments are provided merely as examples to convey the scope of the subject matter to those skilled in the art. Furthermore, for the sake of simplicity, detailed descriptions of well-known technologies not directly related to the present invention have been omitted to prevent confusion in understanding the invention.

[0030] Generally, unless a different meaning is clearly given and / or implied in the context of its use, all terms used herein shall be interpreted according to their common meaning in the relevant art. Unless expressly stated otherwise, all references to "a / an / element, device, component, part, step, etc." shall be construed as referring to at least one instance of that element, device, component, part, step, etc. Unless it must be explicitly stated that a step is described as occurring after or before another step and / or implicitly implied that a step must occur after or before another step, the steps of any method disclosed herein need not be performed in the exact order disclosed. Where appropriate, any feature of any embodiment disclosed herein may be applied to any other embodiment. Similarly, any advantage of any embodiment may be applied to any other embodiment, and vice versa.

[0031] The following description uses 5G / NR mobile communication systems and their subsequent evolutions as example application environments to specifically describe several embodiments according to the present invention. However, it should be noted that the present invention is not limited to the following embodiments, but is applicable to many other wireless communication systems, such as communication systems after 5G and 4G mobile communication systems before 5G, 802.11 wireless networks, etc.

[0032] The following describes some of the terms involved in this invention. Unless otherwise specified, the terms used in this invention are as defined herein. The terms given in this invention may be named differently in LTE, LTE-Advanced, LTE-Advanced Pro, NR and later or other communication systems, but a unified terminology is used in this invention. When applied to a specific system, it can be replaced with the terminology used in the corresponding system.

[0033] 3GPP: 3rd Generation Partnership Project

[0034] LTE: Long Term Evolution.

[0035] NR: New Radio, New Wireless, New Air Interface

[0036] UE: User Equipment

[0037] eNB: evolved NodeB, an advanced base station.

[0038] gNB:NR base station

[0039] FR1: Frequency range 1 as defined in TS 38.104.

[0040] FR2: Frequency range 2 as defined in TS 38.104.

[0041] TTI: Transmission Time Interval

[0042] OFDM: Orthogonal Frequency Division Multiplexing

[0043] CP-OFDM: Cyclic Prefix Orthogonal Frequency Division Multiplexing.

[0044] C-RNTI: Cell Radio Network Temporary Identifier.

[0045] CSI: Channel State Information

[0046] HARQ: Hybrid Automatic Repeat Request.

[0047] CSI-RS: Channel State Information Reference Signal

[0048] PBCH: Physical broadcast channel

[0049] PUCCH: Physical Uplink Control Channel

[0050] PUSCH: Physical Uplink Shared Channel

[0051] PRACH: Physical random-access channel

[0052] PDSCH: Physical downlink shared channel

[0053] PDCCH: Physical downlink control channel

[0054] UL-SCH: Uplink Shared Channel

[0055] DL-SCH: Downlink Shared Channel

[0056] RACH: random-access channel

[0057] DCI: Downlink Control Information

[0058] MCS: Modulation and Coding Scheme

[0059] RB: Resource Block

[0060] RE: Resource Element

[0061] CRB: Common Resource Block

[0062] CP: Cyclic Prefix

[0063] PRB: Physical Resource Block

[0064] VRB: Virtual resource block

[0065] FDM: Frequency Division Multiplexing

[0066] TDD: Time Division Duplexing

[0067] FDD: Frequency Division Duplexing

[0068] SRS: Sounding Reference Signal

[0069] DMRS: Demodulation Reference Signal

[0070] CSI-RS:Channel state information reference signal

[0071] CRC: Cyclic Redundancy Check

[0072] SFI: Slot Format Indication

[0073] SIB: System Information Block

[0074] SIB1: System Information Block Type 1

[0075] PSS: Primary Synchronization Signal

[0076] SSS: Secondary Synchronization Signal

[0077] MIB: Master Information Block

[0078] SSB: Synchronization Signal Block.

[0079] BWP: Bandwidth Part, Bandwidth Segment / Part

[0080] TA: Timing Advance, Uplink Timing Advance

[0081] RedCap Device: Reduced Capability Device

[0082] CORESET0: Control resource set.

[0083] REG: Resource Element Group

[0084] SCS: Sub-carrier spacing

[0085] The following is a description of the technology associated with the present invention. Unless otherwise specified, the same terms in the specific embodiments have the same meaning as in the associated technology.

[0086] It is worth noting that the user equipment and terminal equipment mentioned in this invention specification have the same meaning, and UE can also refer to a terminal, without specific distinction or limitation in the following text. Similarly, network equipment refers to equipment that communicates with the terminal, including but not limited to base station equipment, gNB, eNB, wireless AP, etc., without specific distinction or limitation in the following text. The text can also use a base station as one form of network equipment implementation, and other network equipment forms can be easily substituted.

[0087] Cells in a network can use paired and unpaired spectrum to transmit wireless services. Cells using paired spectrum use a pair of bandwidths (or portions thereof) for uplink and downlink service transmission respectively, and the frequency bands occupied by the two bandwidths do not overlap. The base station or terminal can use both uplink and downlink bandwidths simultaneously for data transmission. Cells using unpaired spectrum use both uplink and downlink bandwidths for uplink and downlink service transmission, and the uplink and downlink bandwidths occupy completely or partially overlapping frequency bands. Therefore, the base station or terminal needs to use different times for uplink or downlink transmission to avoid interference between signals from different directions on the same bandwidth. Cells using paired spectrum are often referred to as FDD cells, and cells using unpaired spectrum are often referred to as TDD cells.

[0088] Network devices can support full-duplex services, meaning the base station or terminal can simultaneously receive and transmit signals. For example, on paired spectrum, the base station or terminal uses one bandwidth for uplink data transmission and another for downlink data transmission. Network devices can also support non-full-duplex services, meaning the base station or terminal does not support simultaneous reception or transmission. One possible method is for the base station or terminal to achieve uplink and downlink data transmission on a single bandwidth using time division. For example, in a cell using non-paired spectrum, network devices and terminals, according to a certain configuration, use different time slots for uplink or downlink data transmission. Another possible method is for the base station to support full-duplex capabilities, while the terminal does not. For example, in a cell using paired spectrum, the terminal uses the uplink bandwidth for uplink data transmission or the downlink bandwidth for downlink data reception at different times. The base station can then simultaneously transmit uplink or downlink data on different bandwidths.

[0089] When base stations or terminals without full-duplex capability are performing uplink or downlink services, if they were not initially in the same transmission state, a certain time interval needs to be reserved for the equipment to complete the transition between transmit and receive states. When a non-full-duplex terminal is in a full-duplex network, the conflict between signals in different transmission directions needs to be considered. For example, when a terminal is in receive mode on the downlink bandwidth, it cannot transmit uplink signals within a certain time range. Similarly, when a terminal is in transmit mode on the uplink bandwidth, it cannot transmit downlink signals within a certain time range.

[0090] There is a certain timing relationship between uplink and downlink frames in a network, such as... Figure 1 As shown. The uplink frame sent by the terminal needs to be detected (N) earlier than the first detection path of the relevant downlink frame determined from the reference cell. TA +N TA_offset The time is N*Tc, where Tc is the unit of time, which is 1 / (4096*480) milliseconds, and N*Tc is the unit of time. TAThe value can be determined by the terminal based on different channels / signals or TA adjustment commands sent by network devices. For example, for the PRACH signal or the PUSCH signal used for type 2 random access. TA Take 0. N TA_offset The timing offset parameter is determined based on the deployment scenario of the network equipment or higher-level configuration parameters. For example, on paired spectrum bands, when NR cells do not coexist with E-UTRA or NB-IoT, N... TA_offset The value 25600 can be used when NR cells coexist with E-UTRA or NB-IoT, etc. TA_offset A value of 0 can be used. The terminal can also determine N by receiving instructions from higher-level signaling. TA_offset The value of N. For example, N. TA_offset Possible values: 25600, N TA_offset It could also take the value 39936, N TA_offset Other values ​​may be used, without affecting the essence of the invention.

[0091] On the other hand, network devices can be configured with various channels / signals in the serving cell to achieve various functions. For example, network devices can transmit SSB signals in a certain configuration on the downlink bandwidth for terminals to receive synchronization and broadcast signals. Network devices can also transmit PDCCH channels to instruct terminals on certain commands or to transmit uplink or downlink data. Network devices can also transmit other downlink channels / signals, such as CSI-RS and PTRS, for different service functions. Network devices also configure different service channels on the uplink for uplink services. For example, the network configures a PRACH channel for terminals to send random access signals. Network devices can also configure a PUSCH channel for data transmission. There are other uplink channels / signals such as PUCCH and SRS. Terminals operating on paired spectrum without full-duplex capability can only be in uplink, downlink, or other states at a given time. If the uplink and downlink signals configured by the network device overlap in time, then uplink and downlink signal collisions will occur because the terminal cannot process them.

[0092] Terminals lacking full-duplex capability can only be in uplink, downlink, or other states at any given time. Therefore, switching from uplink to downlink or vice versa requires a certain amount of time. For example, in an NR network, the maximum time required for a terminal without full-duplex capability to switch from uplink to downlink is T. TX-RX = 25600Tc, where Tc is a unit of time. That is, within a time frame not exceeding T... TX-RX Within a given time frame, a terminal can complete one state transition, switching from a signal transmitting state to a signal receiving state. Similarly, in an NR network, the maximum time for a terminal without full-duplex capability to switch from downlink to uplink is T.RX-TX =25600Tc, the terminal can switch from receiving signal to transmitting signal state within a time not exceeding this. In actual networks, the maximum switching time from uplink to downlink or from downlink to uplink may be selected with other values, which does not affect the method in this invention.

[0093] Network devices can also define the type or state of symbols through configuration signaling, enabling terminals to understand the state of each symbol and thus correctly handle the relationships between signals. For example, network devices can indicate the state of symbols through higher-layer configuration, such as uplink and downlink configuration parameters. For unpaired spectrum cells, network devices indicate whether symbols on the bandwidth are uplink, downlink, or flexible through uplink and downlink configuration parameters. For paired spectrum cells, network devices can also indicate whether symbols on the uplink or downlink bandwidth are uplink, downlink, or flexible through higher-layer uplink and downlink configuration parameters. For example, a network device can indicate that some symbols in a time slot of the uplink bandwidth are uplink, while others are flexible. Similarly, a network device can indicate that some symbols in a time slot of the downlink bandwidth are downlink, while others are flexible. Likewise, network devices can indicate the state of symbols through physical layer signaling. For example, a network device can indicate the state of each symbol in each time slot within a certain time period or cycle through DCI signaling. A network device can indicate that some symbols in a time slot of the uplink bandwidth are uplink, while others are flexible. Similarly, a network device can indicate that some symbols in a time slot of the downlink bandwidth are downlink, while others are flexible. Higher-layer signaling and physical-layer signaling can be combined to indicate the symbol status on the bandwidth.

[0094] Network devices configure PRACH resources for random access procedures. These configured PRACH resources can be associated with SSB numbers to indicate the beam number corresponding to the PRACH resource. Terminals can select PRACH resources and send relevant PRACH signals to report their beam information.

[0095] In a network, a unit representing time-frequency resources is a time slot. A time slot contains 14 (Normal CP scenario) or 12 (Extended CP scenario) OFDM symbols (sometimes referred to as symbols below). Resources within a time slot can be further divided into resource blocks and resource units. A resource block (RB) can be defined in the frequency domain as... For consecutive subcarriers, for example, for a subcarrier spacing (SCS) of 15 kHz, RB is 180 kHz in the frequency domain. For a subcarrier spacing of 15 kHz × 2 μIn the frequency domain, a resource element (RE) represents one subcarrier, and in the time domain, one OFDM symbol. μ can take integer values ​​from 0 to 4 under different configurations. OFDM symbols with different subcarrier parameters have different symbol lengths in the time domain. OFDM symbols using different subcarrier parameters on the same or different bandwidths can be aligned based on frames or time slots.

[0096] For example, using a normal CP with a 15kHz SCS configuration, each frame contains 10 time slots, and each time slot contains 14 symbols, which can be numbered 0-139. A normal CP with a 30kHz SCS configuration contains 20 time slots per frame, and each slot contains 14 symbols, which can be numbered 0-279. Using the same CP type, 15kHz symbols can be time-domain aligned to two 30kHz symbols. Therefore, each 15kHz symbol within a frame can be aligned sequentially with each 30kHz symbol within the same frame. Similarly, two consecutive 30kHz symbols can be aligned to a 15kHz symbol. Alignment relationships can be obtained similarly for symbols using other SCS parameters.

[0097] like Figure 2 As shown, uplink and downlink bandwidth may use the same SCS (Simplified Chinese Character Set). Figure 2 (b) or different SCS ( Figure 2 (a) When using the same SCS, the symbol numbers for the uplink and downlink bandwidths are the same. The position and length of the same symbols on the downlink bandwidth can be determined based on the symbol position and length of the uplink signal. When using different SCSs, such as a 15kHz SCS for the uplink bandwidth and a 30kHz SCS for the downlink bandwidth, symbol 0 in the uplink bandwidth is aligned to symbols 0 and 1 in the downlink bandwidth. Based on the symbol number 0 used in the uplink signal, the downlink symbols that overlap with at least one symbol of the uplink signal are determined to be 0 and 1. Similarly, based on the symbol number 0 used in the downlink signal, the uplink symbol that overlaps with at least one symbol of the downlink signal is determined to be 0. Other cases using different parameter configurations and other symbol number alignment relationships can be derived by analogy and will not be elaborated further.

[0098] This invention provides a method for handling uplink and downlink conflicts during data transmission on paired spectrum for terminals that do not have full-duplex capability. This method can ensure the terminal's working capability on the network, reduce network problems, improve system reliability, and efficiently complete related service transmission functions.

[0099] Figure 3 This is a flowchart illustrating an embodiment of the uplink signal transmission method of the present invention.

[0100] refer to Figure 3In S11, the uplink first symbol position of the uplink signal OFDM symbol used to transmit the uplink signal is determined on the uplink bandwidth according to the uplink signal transmission parameters used to transmit the uplink signal.

[0101] In S12, the relevant OFDM symbol on the downlink bandwidth corresponding to the uplink bandwidth is determined based on the determined first symbol position.

[0102] In S13, downlink signals whose time domain overlaps with at least one of the determined associated OFDM symbols are not received, and / or the determined associated OFDM symbols are not used to receive downlink signals. In this embodiment, the uplink bandwidth and its corresponding downlink bandwidth are paired bandwidths, i.e., they do not overlap.

[0103] It should be noted that, in the embodiments of this specification, the overlap of one OFDM symbol with another in the time domain can refer to an overlap in the symbol order in the time domain, or it can refer to a partial or complete overlap in the time regions occupied in the time domain. The example described below of determining overlapping OFDM symbols by aligning uplink and downlink OFDM symbols is merely one example of determining overlapping OFDM symbols, and the present invention is not limited thereto.

[0104] As an exemplary embodiment, a terminal without full-duplex capability transmits uplink signals on paired spectrum according to the instructions of the network device. The terminal determines the symbol position of the uplink signal on the uplink bandwidth, and determines not to receive downlink signals on the symbols of the corresponding downlink bandwidth based on the uplink signal. Optionally, the terminal determines not to receive downlink signals on the symbols of the downlink bandwidth that overlap with the uplink signal. The uplink signal is one or more of PUSCH, PRACH, PUCCH, SRS, etc.

[0105] The terminal determines the symbol number and other information in the uplink bandwidth based on parameters such as the length of the transmitted uplink signal in the time domain, the start symbol, and the time slot position (corresponding to "uplink signal transmission parameters"). For example, when the terminal transmits a PUSCH signal, it can determine the number of symbols, radio frame number, time slot number, and start symbol used by this PUSCH signal according to relevant configurations or authorizations, and determine the symbol position of the PUSCH signal in the bandwidth. The terminal can determine the corresponding downlink symbol position based on the uplink symbol position. If the uplink and downlink bandwidths use the same SCS, then the uplink and downlink symbols use the same sequence number, and the symbol sequence number used by the uplink signal can directly determine the symbol in the downlink bandwidth. When the uplink and downlink bandwidths use different SCSs, alignment can be performed based on the symbol positions corresponding to the different SCSs. For example, if the uplink uses a 30kHz SCS and the downlink uses a 15kHz SCS, the terminal can use the 30kHz SCS to determine the symbol sequence number used by the PUSCH in the downlink bandwidth, and the terminal determines the symbol sequence number of the 15kHz symbol using the same symbol position in the downlink bandwidth based on the alignment relationship of different SCSs in the downlink bandwidth.

[0106] Optionally, the terminal does not receive downlink signals that overlap with at least one of the N1 symbols preceding the uplink signal symbol. Optionally, these downlink signals are one of PDCCH, PDSCH, CSI-RS, etc.

[0107] For example, if the timing offset value in the network is t1 = 25600Tc, the terminal needs a maximum of t2 = 25600Tc to switch from downlink to uplink. To send an uplink signal on a given symbol, the terminal needs to switch to uplink at least t1 + t2 = 51200Tc time before the first symbol of the uplink signal, which is approximately 26µs. Different symbol parameters determine different symbol lengths. When the downlink bandwidth SCS uses 15k and the standard CP length, the length of each symbol containing the CP is approximately 71.3µs. When the downlink bandwidth SCS uses 30k and the standard CP length, the length of each symbol containing the CP is approximately 35.6µs. When the downlink bandwidth SCS uses 60k and the standard CP length, the length of each symbol containing the CP is approximately 17.8µs. When the downlink bandwidth SCS uses 60k and the extended CP length, the length of each symbol containing the CP is approximately 20.8µs. The terminal can determine the number of symbols N1 based on the parameters used by the network device, allowing the terminal sufficient time for state transitions.

[0108] by Figure 4 For example, suppose the terminal determines to transmit uplink signals in symbols 0, 1, and 2. Figure 4 In the diagram, 'a', 'b', and 'c' represent scenarios where the uplink and downlink use the same SCS and different SCS, respectively. The terminal does not receive the downlink signal of the N1 symbols preceding symbol 0 in the downlink bandwidth.

[0109] Optionally, the terminal depends on the N used by the cell. TA_offset The value of N1 is determined by the SCS parameter and / or bandwidth. Optionally, the value of N1 may include multiple N1 values, which the terminal can determine based on the N1 value used by the cell. TA_offset The value and / or bandwidth SCS parameter selects one of multiple N1 values ​​as the value of N1. For example, the value of N1 can include a first N1 value and a second N1 value. Optionally, when N... TA_offset When the value is greater than 0, the terminal determines that N1 uses the first N1 value. Optionally, the terminal determines the first N1 value to be 2. In this case, this length can meet the terminal's time requirements for different SCSs. The terminal also determines the first N1 value based on the bandwidth SCS parameter. Optionally, the first N1 value is determined to be 2 for bandwidth using a 60kHz SCS, and 1 for bandwidth using a 15k or 30kHz SCS. Optionally, when N... TA_offset When the value is equal to 0, the terminal determines that N1 uses the second N1 value. Optionally, the terminal determines that the second N1 value is 1 symbol. Each N1 value here is obtained based on at least one of the example timing offset parameter, SCS parameter, and switching time requirement, etc. When different values ​​are selected for these parameters, other values ​​may be generated, which does not affect the implementation of the present invention.

[0110] Optionally, the positions of the N1 symbols are determined based on the symbols on the bandwidth with the larger SCS used in the uplink and downlink bandwidths. For example, when the uplink bandwidth uses a 30kHz SCS and the downlink bandwidth uses a 15kHz SCS, the terminal determines the positions of the N1 symbols using a 30kHz SCS, and does not receive downlink signals on the N1 symbols calculated using a 30kHz SCS before the symbol whose downlink bandwidth is aligned with the uplink signal.

[0111] Optionally, the terminal does not receive downlink signals that overlap with at least one symbol within N2 symbols following the uplink signal symbol position. Optionally, these downlink signals are one or more of PDCCH, PDSCH, CSI-RS, etc. Figure 5 This is a schematic diagram used to illustrate the N2 symbols after the uplink signal symbol is determined. Figure 5 In the diagram, a, b, and c represent scenarios where the uplink and downlink use the same SCS and different SCS, respectively.

[0112] For example, if the network uses a timing offset of t1 = 25600Tc, the terminal requires a maximum of t2 = 25600Tc to perform an uplink-to-downlink transition. To receive a downlink signal after sending an uplink signal, the terminal can receive the downlink signal at most after a time interval of t1 - t2 = 0 after the last symbol of the uplink signal. If the network uses a timing offset of t1 = 0Tc, the terminal still requires a maximum of t2 = 25600Tc to perform an uplink-to-downlink transition. Again, to receive a downlink signal after sending an uplink signal, the terminal can receive the downlink signal at most after a time interval of t2 - t1 = 25600Tc after the last symbol of the uplink signal, which is approximately 13µs. The terminal can determine the length of N² symbols based on the network parameters, allowing sufficient time for possible state transitions.

[0113] Optionally, the terminal depends on the N used by the cell. TA_offset The value determines the length of N2 symbols. Optionally, the value of N2 can include multiple N2 values, which the terminal can determine based on the N2 value used by the cell. TA_offset The value and / or bandwidth SCS parameter selects one of multiple N2 values ​​as the value of N2. For example, the value of N2 can include a first N2 value and a second N2 value. Optionally, when N... TA_offset When N2 is a value greater than 0, the terminal determines that N2 uses the first N2 value. Optionally, the terminal determines that the first N2 value is 0. Optionally, when N... TA_offset When the value is equal to 0, the terminal determines that N2 uses the second N2 value. Optionally, the terminal determines that the second N2 value is 1 symbol. Each N2 value here is obtained based on at least one of the example timing offset parameter, SCS parameter, and handover time requirement, etc. When different values ​​are selected for these parameters, other values ​​may be generated, which does not affect the implementation of the present invention.

[0114] Optionally, the positions of the N2 symbols are determined based on the symbols on the bandwidth with the larger SCS used in the uplink and downlink bandwidths. For example, when the uplink bandwidth uses a 30kHz SCS and the downlink bandwidth uses a 15kHz SCS, the terminal determines the positions of the N1 symbols using a 30kHz SCS, and does not receive downlink signals on the N2 symbols calculated using a 30kHz SCS after the symbol whose downlink bandwidth is aligned with the uplink signal.

[0115] Optionally, the terminal does not receive downlink signals that conflict with the uplink transmission signal, and the terminal does not perform HARQ feedback on the downlink signal.

[0116] Figure 6 This is a flowchart illustrating a downlink signal receiving method according to an embodiment of the present invention.

[0117] refer to Figure 6In S21, the second symbol position of the downlink signal OFDM symbol used for receiving downlink signals is determined on the downlink bandwidth based on the downlink signal receiving parameters used for receiving downlink signals.

[0118] In S22, the relevant OFDM symbol in the uplink bandwidth corresponding to the downlink bandwidth is determined based on the determined second symbol position.

[0119] In S23, uplink signals that overlap in the time domain with at least one of the associated OFDM symbols are not transmitted, and / or the determined associated OFDM symbols are not used to transmit uplink signals. In this embodiment, the uplink bandwidth and its corresponding downlink bandwidth are paired bandwidths, i.e., they do not overlap.

[0120] In an optional embodiment, the terminal receives downlink signals according to the instructions of the network device. The terminal determines the position of the symbol transmitting the downlink signal, and determines not to transmit uplink signals on symbols within the uplink bandwidth corresponding to the symbol transmitting the downlink signal. Optionally, the terminal determines not to transmit uplink signals on symbols within the uplink bandwidth that overlap with the downlink signal. Optionally, the downlink signal is one or more of PDCCH, PDSCH, CSI-RS, etc.

[0121] For example, the downlink signal is represented by the PDSCH signal. The terminal can determine the symbol number in the downlink bandwidth based on the configured downlink signal's length in the time domain, as well as parameters such as the time slot and start symbol (corresponding to "downlink signal reception parameters"). If the uplink and downlink bandwidths use the same SCS, then the uplink and downlink symbols use the same sequence number, and the symbol number used by the downlink PDSCH signal can be directly used to determine the symbol in the uplink bandwidth. When the uplink and downlink bandwidths use different SCSs, conversion can be performed based on the symbol positions corresponding to the different SCSs. For example, if the uplink uses a 30kHz SCS and the downlink uses a 15kHz SCS, the terminal uses the 15kHz SCS to determine the symbol number used by the PDSCH in the uplink bandwidth. Based on the alignment relationship of different SCSs in the uplink bandwidth, the terminal determines the 30kHz symbol number using the same time domain position in the uplink bandwidth.

[0122] Optionally, the terminal determines not to transmit an uplink signal on an uplink bandwidth that overlaps with the N2 symbol preceding the downlink signal symbol position by at least one symbol.

[0123] For example, if the network timing offset uses t1 = 25600Tc, the maximum downlink-to-uplink handover required by the terminal is t2 = 25600Tc. To receive the downlink signal on a given symbol, the terminal must begin handover at least t2 - t1 = 0 before the first symbol of the downlink signal. Alternatively, if the network timing offset uses t1 = 0Tc, the maximum downlink-to-uplink handover required by the terminal is t2 = 25600Tc. To receive the downlink signal on a given symbol, the terminal must begin handover at least t2 - t1 = 25600Tc before the first symbol of the downlink signal, which is approximately 13µs.

[0124] The terminal can determine the symbol length of N2 based on network parameters, giving the terminal sufficient time to perform possible state transitions.

[0125] Optionally, the terminal depends on the N used by the cell. TA_offset The value determines the sign length of N². Optionally, when N... TA_offset When N2 is a value greater than 0, the terminal determines that N2 uses the first N2 value. Optionally, the terminal determines that the first N2 value is 0. Optionally, when N... TA_offset When the value is 0, the terminal determines that N2 uses the second N2 value. Optionally, the terminal determines that the second N2 value is 1.

[0126] Optionally, the positions of the N2 symbols are determined based on the symbols on the bandwidth with the larger SCS used in the uplink and downlink bandwidth.

[0127] Optionally, the terminal determines not to transmit uplink signals on the uplink bandwidth that overlaps with at least one symbol within N1 symbols following the symbol position of the downlink signal transmission. Optionally, these signals are one or more of PUSCH, PRACH, PUCCH, SRS, etc.

[0128] For example, if the timing offset value in the network uses t1 = 25600Tc, the terminal needs a maximum of t2 = 25600Tc to perform a downlink-to-uplink handover. To determine whether to receive downlink signals on symbols within the downlink bandwidth, the terminal must transmit on at least one uplink symbol after the last symbol of the downlink signal, at a time of t1 + t2 = 51200Tc. Different symbol parameters determine different symbol lengths. When the downlink bandwidth SCS uses 15k and the standard CP length, the length of each symbol containing the CP is approximately 71.3µs. When the downlink bandwidth SCS uses 30k and the standard CP length, the length of each symbol containing the CP is approximately 35.6µs. When the downlink bandwidth SCS uses 60k and the standard CP length, the length of each symbol containing the CP is approximately 17.8µs. When the downlink bandwidth SCS uses 60k and the extended CP length, the length of each symbol containing the CP is approximately 20.8µs.

[0129] Optionally, the terminal depends on the N used by the cell. TA_offset The value of N1 is determined by the value and / or bandwidth SCS parameter. Optionally, when N TA_offset When the value is greater than 0, the terminal determines that N1 uses the first N1 value. Optionally, the terminal determines the first N1 value to be 2. In this case, this length can meet the terminal's time requirements for different SCSs. The terminal also determines the first N1 value based on the bandwidth SCS parameter. Optionally, the first N1 value is determined to be 2 for bandwidth using a 60kHz SCS, and 1 for bandwidth using a 15k or 30kHz SCS. Optionally, when N... TA_offset When the value is equal to 0, the terminal determines that N1 uses the second N1 value. Optionally, the terminal determines that the second N1 value is 1 symbol.

[0130] The descriptions of N1 and N2 in Embodiment a above can also be applied to this embodiment.

[0131] Optionally, the positions of the N1 symbols are determined based on the symbols on the bandwidth with the larger SCS used in the uplink and downlink bandwidth.

[0132] Figure 7 This is a flowchart illustrating a method for configuring resources for random access according to an embodiment of the present invention.

[0133] refer to Figure 7 In S31, the effective uplink channel resources in the uplink bandwidth that can be used to transmit uplink random access signals are determined.

[0134] In S32, an uplink random access channel resource is selected from the available uplink channel resources to configure the uplink random access channel resource for transmitting uplink random access signals.

[0135] In S33, at least when transmitting uplink random access signals using uplink random access channel resources, downlink signals on OFDM that overlap in the time domain with the OFDM symbols used by the uplink random access channel resources are not received. In this embodiment, the uplink bandwidth and the corresponding downlink bandwidth are paired bandwidths, i.e., they do not overlap.

[0136] In an optional embodiment, the network device configures the SSB signal to be transmitted on the symbols of the time slot. The terminal can receive the SSB signal transmitted by the network device for purposes such as obtaining broadcast messages or performing signal measurements. The network device configures resources for the terminal to transmit PRACH signals on the time slot symbols. The terminal can transmit PRACH signals on these resources according to instructions from higher layers or the physical layer. For cells using paired spectrum, the SSB signal is configured on the symbols of the downlink bandwidth, and the PRACH resources are configured on the symbols of the uplink bandwidth. When using some network device configuration parameters, some or all of the symbols used by the PRACH transmission resources overlap with the symbols used by the SSB in the time domain. For terminals without full-duplex capability, they cannot simultaneously receive SSB and transmit PRACH. The terminal determines the validity of the PRACH resources and uses the valid PRACH resources to map the PRACH resources to SSB sequence numbers. When the terminal needs to transmit a PRACH signal, it selects an available PRACH resource for signal transmission.

[0137] The terminal can determine the symbol position of the SSB signal based on the network's configuration parameters. For example, the terminal can determine the symbol position of the actually transmitted SSB in the downlink bandwidth based on ssb-PositionsInBurst and other parameters. The terminal can determine the symbol position of the PRACH resource based on the network device's configuration parameters. For example, the terminal can determine the time slot and symbol position used by the PRACH resource on the paired spectrum based on prach-ConfigurationIndex. The terminal can also determine the positions of multiple symbols used by a PRACH resource in the time domain based on other parameters. Since non-full-duplex terminals cannot simultaneously transmit signals on the uplink bandwidth and receive signals on the downlink bandwidth, the terminal needs to determine the validity of the PRACH resource.

[0138] Optionally, the terminal determines that PRACH resources on the paired spectrum that share the same symbol position as the SSB are valid resources. The terminal also determines that PRACH resources that do not share the same symbol position as the SSB are valid resources. The terminal maps all valid PRACH resources to SSB sequence numbers, and selects one valid PRACH resource to transmit the PRACH signal according to instructions from higher layers or the physical layer.

[0139] Optionally, the terminal does not receive downlink signals whose symbol positions overlap with those used by valid PRACH resources in the time domain. Optionally, these signals are one or more of PDCCH, PDSCH, CSI-RS, etc. Terminals without full-duplex capability determine available PRACH resources using the uplink bandwidth of paired spectrum cells. The terminal does not expect the base station to send signals to it on the corresponding downlink bandwidth symbols, and the terminal does not receive downlink signals that overlap with these resources by one or more symbols. For example, the terminal can determine the length of the PRACH resource in the time domain based on PRACH parameters, and determine its symbol number in the uplink bandwidth time slot. If the uplink and downlink bandwidths use the same SCS, then the uplink and downlink symbols use the same sequence number, and the symbol number used by the uplink PRACH resource can directly determine the symbol in the downlink bandwidth. When the uplink and downlink bandwidths use different SCSs, the symbol position can be determined based on the relationship between the different SCSs. For example, the uplink uses a 30kHz SCS, and the downlink uses a 15kHz SCS. The terminal can use a 30kHz SCS to determine the symbol number used by PRACH in the downlink bandwidth. Based on the alignment relationship of different SCSs in the downlink bandwidth, the terminal determines the symbol number of the same time domain position in the downlink bandwidth at 15kHz.

[0140] Optionally, these downlink signals do not include SSB signals or signals transmitted by CORESET0 as determined by the MIB. During periods when the uplink random access channel resources are not being used to transmit the uplink random access signals, reception of common downlink signals (e.g., the aforementioned SSB signals or signals transmitted by CORESET0 as determined by the MIB) on OFDM symbols that overlap in the time domain with the OFDM symbols used by the uplink random access channel resources is permitted. The terminal determines whether to receive the SSB signal or the signal transmitted by CORESET0 as determined by the MIB based on the current state. For example, when the terminal does not transmit a PRACH signal on a symbol, the terminal may receive the SSB or the signal transmitted by CORESET0 as determined by the MIB.

[0141] Optionally, the terminal does not receive downlink signals that overlap in the time domain with the first N1 symbols used by the valid PRACH resources. Optionally, these signals are one or more of PDCCH, PDSCH, CSI-RS, etc.

[0142] For example, if the timing offset in the network uses t1 = 25600Tc, and the terminal requires a maximum of t2 = 25600Tc for downlink to uplink handover, then to send an uplink signal on a given symbol, the terminal needs to begin the uplink handover at least t1 + t2 = 51200Tc before the first symbol of the uplink signal, which is approximately 26µs. When the downlink bandwidth portion SCS uses 15k and the standard CP length, the length of the CP per symbol is approximately 71.3µs. When the downlink bandwidth portion SCS uses 30k and the standard CP length, the length of the CP per symbol is approximately 35.6µs. When the downlink bandwidth portion SCS uses 60k and the standard CP length, the length of the CP per symbol is approximately 17.8µs. When the downlink bandwidth portion SCS uses 60k and the extended CP length, the length of the CP per symbol is approximately 20.8µs. The terminal can determine the length of N1 symbols based on network parameters, allowing sufficient time for possible state transitions.

[0143] Figure 8 This is a schematic diagram illustrating the determination of N1 symbols before sending an uplink random access signal in a method for configuring resources for random access. Figure 8 In the diagram, 'a' and 'b' represent scenarios using the same SCS for uplink and downlink bandwidth, and scenarios using different SCS, respectively. Assume the PRACH signal uses uplink bandwidth with symbol numbers 0, 1, and 2.

[0144] Figure 9 This is a schematic diagram used to illustrate the determination of N2 symbols after sending the uplink random access signal in the method of configuring resources for random access.

[0145] Optionally, the terminal depends on the N used by the cell. TA_offset The value and / or bandwidth SCS parameter determine the symbol length of N1. Optionally, when N TA_offset When the value is greater than 0, the terminal determines that N1 uses the first N1 value. Optionally, the terminal determines the first N1 value to be 2. In this case, this length can meet the terminal's requirements for different SCSs. Optionally, the terminal also determines the first N1 value based on the bandwidth SCS parameter. For example, for a bandwidth using a 60kHz SCS, the first N1 value is determined to be 2 (i.e., 2 symbols), and for a bandwidth using a 15k or 30kHz SCS, the first N1 value is determined to be 1 (i.e., 1 symbol). In this case, this length can meet the terminal's requirements for cells using different SCSs. Optionally, when N... TA_offset When N1 is equal to 0, the terminal determines that N1 uses the second N1 value. Optionally, the terminal determines that the second N1 value is 1. Here, N... TA_offsetThe offset of the uplink frame relative to the downlink frame, representing the network device configuration, may use other representations without affecting the implementation of this invention. The symbol values ​​here are obtained based on the example frame offset values, SCS parameters, and handover time requirements, etc. When different values ​​are selected for these parameters, other values ​​may be generated, which will not affect the implementation of this invention.

[0146] Optionally, the positions of the N1 symbols are determined based on the larger SCS among the uplink and downlink bandwidths.

[0147] Optionally, the terminal does not receive downlink signals that overlap with the last N2 symbols of the symbol used by the valid PRACH resource. Optionally, the downlink signal is one or more of PDCCH, PDSCH, CSI-RS, etc.

[0148] Optionally, the downlink signal does not include the symbol used by SSB or CORESET0 as determined by MIB.

[0149] For example, N TA_offset Using t1 = 25600Tc, the terminal requires a maximum of t2 = 25600Tc to perform an uplink-to-downlink switch. To ensure timely reception after sending the uplink signal, the terminal can only begin uplink switching at most after the last symbol of the uplink signal, within the time interval t1 - t2 = 0. If N TA_offset Using t1 = 0Tc, the terminal requires a maximum of t2 = 25600Tc to perform an uplink-to-downlink transition. To ensure timely reception after sending the uplink signal, the terminal can only begin uplink handover at most after t1 - t2 = 25600Tc time following the last symbol of the uplink signal, which is approximately 13µs. The terminal can determine the length of N² symbols based on network parameters, allowing sufficient time for possible state transitions.

[0150] Figure 9 This is a schematic diagram used to illustrate the determination of N2 symbols after sending the uplink random access signal in the method of configuring resources for random access. Figure 9 In the diagram, 'a' and 'b' represent scenarios using the same SCS for uplink and downlink bandwidth, and scenarios using different SCS, respectively. Assume the PRACH signal uses the uplink bandwidth at positions 0 / 1 / 2.

[0151] Optionally, the terminal depends on the N used by the cell. TA_offset The value and / or bandwidth SCS parameter determine the symbol length of N2. Optionally, when N... TA_offset When the value is greater than 0, the terminal determines that N2 uses the first N2 value. Optionally, the terminal determines that the first N2 value is 0 (i.e., 0 symbol lengths). In this case, this length can meet the terminal's timing requirements for different SCSs. Optionally, the terminal determines the N2 value based on the value of N2. TA_offsetWhen the value is 0, the terminal determines that N2 uses the second N2 value. Optionally, the terminal determines that the second N2 value is 1.

[0152] Optionally, the positions of the N2 symbols are determined based on the symbols on the bandwidth with the larger SCS used in the uplink and downlink bandwidth.

[0153] The descriptions of N1 and N2 in the foregoing embodiments can also be applied to this embodiment.

[0154] Optionally, the terminal determines that PRACH resources on the uplink bandwidth of the paired spectrum that share at least one symbol position with the SSB signal are not valid resources. Optionally, the terminal determines that PRACH resources on the uplink bandwidth of the paired spectrum that share at least one symbol position with the N1 symbols following the SSB signal are not valid resources. Optionally, the terminal determines that PRACH resources on the uplink bandwidth of the paired spectrum that share at least one symbol position with the N2 symbols preceding the SSB signal are not valid resources. Optionally, the positions of the N1 symbols are determined based on the symbols on the bandwidth with the larger SCS used in both uplink and downlink bandwidths. Optionally, the positions of the N2 symbols are determined based on the symbols on the bandwidth with the larger SCS used in both uplink and downlink bandwidths.

[0155] Optionally, the terminal uses a set of valid and invalid PRACH resources for SSB mapping. The terminal does not use invalid PRACH resources to transmit PRACH signals.

[0156] Optionally, the terminal determines that it does not receive downlink signals at the downlink bandwidth symbol location associated with valid PRACH resources.

[0157] In an optional embodiment, the terminal determines the availability of PRACH resources based on the timeslot format. The terminal determines the type of each symbol in a pair of spectra based on the timeslot format. The terminal determines whether the symbols on the uplink bandwidth are uplink or flexible. The terminal receives a network timeslot format indication, determines the validity of the PRACH resources on the timeslot, and the terminal can transmit PRACH signals on the PRACH resources. Optionally, the terminal determines that a PRACH resource overlapping with at least one symbol of a flexible symbol is not a valid PRACH resource. The terminal determines the type of symbols on the downlink bandwidth. Optionally, the terminal determines that a PRACH resource overlapping with at least one symbol of a symbol indicated as downlink is not a valid PRACH resource.

[0158] Network devices can configure relevant resources for terminals supporting type 2 random access, including PRACH resources and associated PUSCH channel parameters for type 2 random access. Terminals can use the associated PRACH and PUSCH signals to send random access preamble and msgA messages. PRACH and PUSCH are transmitted on the uplink bandwidth.

[0159] In optional embodiments, the network device configures SSB signals to be transmitted on symbols of time slots. Terminals can receive SSB signals for functions such as obtaining broadcast messages or performing signal measurements. The network device configures resources for transmitting PUSCH signals on symbols of time slots. Terminals can transmit PUSCH signals on these resources according to instructions from higher layers or the physical layer, for type 2 random access procedures. For cells using paired spectrum, SSB signals are configured on symbols of downlink bandwidth, and PUSCH resources are configured on symbols of uplink bandwidth. Under certain configuration parameters, some or all of the symbols used by PUSCH transmission resources overlap with the symbols used by SSBs in the time domain. For terminals without full-duplex capability, which cannot simultaneously receive SSBs and transmit PUSCHs, the terminal determines the validity of PUSCH resources and uses valid PUSCH resources to map PUSCH resources to PRACH resources.

[0160] Optionally, the terminal determines that the PUSCH resource that uses the same symbol position as the SSB is a valid resource, and the terminal determines that the PUSCH resource that does not use the same symbol position as the SSB is a valid resource.

[0161] Optionally, the terminal does not receive downlink signals whose symbol positions overlap with those used by valid PUSCH resources in the time domain. Optionally, these signals can be one or more of PDCCH, PDSCH, CSI-RS, etc. Terminals without full-duplex capability determine available PUSCH resources using the uplink bandwidth of paired spectrum cells. The terminal does not expect the base station to send downlink signals to it on the downlink bandwidth symbols corresponding to these resources, and the terminal does not receive downlink signals that overlap with one or more symbols at these positions. For example, the terminal can determine the length of the PUSCH resource in the time domain and its symbol number in the uplink bandwidth based on the configured PUSCH parameters. If the uplink and downlink bandwidths use the same SCS, the uplink and downlink symbols use the same sequence number, and the symbol number used by the uplink PUSCH resource can be directly used to determine the symbols in the downlink bandwidth. When the uplink and downlink bandwidths use different SCSs, conversion can be performed based on the symbol positions corresponding to the different SCSs. For example, the uplink uses a 30kHz SCS, and the downlink uses a 15kHz SCS. The terminal uses a 30kHz SCS to determine the symbol number used by the PUSCH in the downlink bandwidth. Based on the alignment relationship of different SCSs in the downlink bandwidth, the terminal determines the symbol number of the same time domain position in the downlink bandwidth at 15kHz.

[0162] Optionally, the terminal determines that the PUSCH resources of a pair of spectrum symbols sharing at least one position with the SSB are not valid resources. Optionally, the terminal determines that the PUSCH resources of a pair of spectrum symbols sharing at least one position with the SSB among the N1 symbols following the SSB are not valid resources. Optionally, the terminal determines that the PUSCH resources of a pair of spectrum symbols sharing at least one position with the SSB among the N2 symbols preceding the SSB are not valid resources.

[0163] Optionally, the terminal uses a set of valid and invalid PUSCH resources for SSB mapping. The terminal does not use valid PUSCH resources to transmit the MsgA signal.

[0164] [Variation Example]

[0165] Below, using Figure 10 This describes a user equipment, as a variation, that can execute the method described in detail above for user equipment.

[0166] Figure 10 This is a block diagram representing the user equipment (UE) involved in this invention.

[0167] like Figure 10 As shown, the user equipment UE100 includes a processor 101 and a memory 102. The processor 101 may include, for example, a microprocessor, a microcontroller, an embedded processor, etc. The memory 102 may include, for example, volatile memory (such as random access memory, RAM), a hard disk drive (HDD), non-volatile memory (such as flash memory), or other memory. Program instructions are stored on the memory 102. When executed by the processor 101, these instructions can perform the methods described in detail herein, executed by the user equipment.

[0168] The method and related apparatus of the present invention have been described above in conjunction with preferred embodiments. Those skilled in the art will understand that the methods shown above are merely exemplary, and the various embodiments described above can be combined with each other without contradiction. The method of the present invention is not limited to the steps and sequence shown above. The network nodes and user equipment shown above may include more modules, such as modules that can be developed or will be developed in the future for use with base stations, MMEs, or UEs, etc. The various identifiers shown above are merely exemplary and not limiting, and the present invention is not limited to the specific information elements exemplified by these identifiers. Those skilled in the art can make many variations and modifications based on the teachings of the illustrated embodiments.

[0169] It should be understood that the above embodiments of the present invention can be implemented by software, hardware, or a combination of both. For example, the various components inside the base station and user equipment in the above embodiments can be implemented by a variety of devices, including but not limited to: analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, programmable processors, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), programmable logic devices (CPLDs), and so on.

[0170] In this application, "base station" can refer to a mobile communication data and control switching center with high transmission power and wide coverage, including functions such as resource allocation and scheduling, and data reception and transmission. "User equipment" can refer to user mobile terminals, such as mobile phones, laptops, and other terminal devices that can wirelessly communicate with base stations or micro base stations.

[0171] Furthermore, the embodiments of the present invention disclosed herein can be implemented on a computer program product. More specifically, the computer program product is one that has a computer-readable medium on which computer program logic is encoded, which, when executed on a computing device, provides related operations to implement the above-described technical solutions of the present invention. When executed on at least one processor of a computing system, the computer program logic causes the processor to perform the operations (methods) described in the embodiments of the present invention. This configuration of the present invention is typically provided as software, code, and / or other data structures disposed or encoded on a computer-readable medium such as an optical medium (e.g., CD-ROM), floppy disk, or hard disk, or other media such as firmware or microcode on one or more ROM, RAM, or PROM chips, or downloadable software images, shared databases, etc., in one or more modules. The software or firmware or such configuration can be installed on a computing device to cause one or more processors in the computing device to execute the technical solutions described in the embodiments of the present invention.

[0172] Furthermore, each functional module or feature of the base station equipment and terminal equipment used in each of the above embodiments can be implemented or executed by circuitry, which is typically one or more integrated circuits. Circuitry designed to perform the various functions described in this specification may include general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs) or general-purpose integrated circuits, field-programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic, or discrete hardware components, or any combination of the above devices. The general-purpose processor may be a microprocessor, or the processor may be an existing processor, controller, microcontroller, or state machine. The aforementioned general-purpose processor or each circuit may be configured by digital circuitry or by logic circuitry. Furthermore, when advancements in semiconductor technology lead to advanced technologies that can replace current integrated circuits, the present invention may also utilize integrated circuits obtained using such advanced technologies.

[0173] Although the present invention has been illustrated above with reference to preferred embodiments, those skilled in the art will understand that various modifications, substitutions, and alterations can be made to the invention without departing from its spirit and scope. Therefore, the invention should not be limited by the above embodiments, but rather by the appended claims and their equivalents.

Claims

1. A method for transmitting uplink signals on paired spectrum, performed by a user equipment (UE), wherein the UE does not have full-duplex capability, comprising: Based on the uplink signal transmission parameters used to transmit the uplink signal, determine the first symbol position of the uplink signal OFDM symbol used to transmit the uplink signal on the uplink bandwidth; Based on the determined first symbol position, the relevant OFDM symbols on the downlink bandwidth corresponding to the uplink bandwidth are determined not to be used for downlink data transmission of the UE; The relevant OFDM symbols include at least one of the following: The OFDM symbol in the downlink bandwidth that overlaps in the time domain with at least one of the N1 OFDM symbols preceding the OFDM symbol of the uplink signal, where N1 is an integer and is determined based on at least one of the following: the handover time of the UE from downlink to uplink operating state, the network timing offset value in the network in which the UE is located, and the larger of the SCS used by the uplink bandwidth and the SCS used by the downlink bandwidth. The OFDM symbols in the downlink bandwidth that overlap in the time domain with at least one of the N2 OFDM symbols following the OFDM symbol of the uplink signal, where N2 is an integer and is determined based on at least one of the following: the handover time of the UE from the uplink operating state to the downlink operating state, the network timing offset value in the network in which the UE is located, and the larger of the SCS used for the uplink bandwidth and the SCS used for the downlink bandwidth.

2. The method according to claim 1, wherein, The N1 value can be multiple N1 values. The method further includes: selecting one of the multiple N1 values ​​as the N1 value based on the network timing offset value and / or bandwidth SCS parameter. And / or, The value of N2 includes multiple N2 values, and the method further includes: selecting one of the multiple N2 values ​​as the value of N2 based on the network timing offset value and / or bandwidth SCS parameter.

3. The method according to claim 1 or 2, wherein, The OFDM symbols in the network where the UE is located are defined as types, which include any one of uplink, downlink, and flexible. The available uplink channel resources for random access include at least one of the following: The effective uplink channel resources are determined according to the time slot format configured in the network device; The uplink channel resources that overlap with at least one of the OFDM symbols used in the uplink bandwidth that are determined to be flexible are not identified as valid uplink channel resources. The OFDM symbols used are not identified as valid uplink channel resources if they overlap with at least one of the OFDM symbols identified as downlink in the downlink bandwidth.

4. A method for receiving downlink signals on paired spectrum, performed by a user equipment (UE), wherein the UE does not have full-duplex capability, comprising: Based on the downlink signal receiving parameters used to receive the downlink signal, determine the second symbol position of the downlink signal OFDM symbol in the downlink bandwidth; Based on the determined second symbol position, the relevant OFDM symbols in the uplink bandwidth corresponding to the downlink bandwidth are determined not to be used for the uplink data transmission of the UE; The relevant OFDM symbols include at least one of the following: The OFDM symbols in the uplink bandwidth that overlap with at least one of the N2 OFDM symbols preceding the OFDM symbol of the downlink signal in the time domain, where N2 is an integer, are determined based on at least one of the following: the handover time of the UE from the uplink operating state to the downlink operating state, the network timing offset value in the network in which the UE is located, and the larger of the SCS used by the uplink bandwidth and the SCS used by the downlink bandwidth. The OFDM symbols in the downlink bandwidth that overlap with at least one of the N1 OFDM symbols following the OFDM symbol of the downlink signal in the time domain, where N1 is an integer, are determined based on at least one of the following: the switching time of the UE from downlink operating state to uplink operating state, the network timing offset value in the network where the UE is located, and the larger of the SCS used for the uplink bandwidth and the SCS used for the downlink bandwidth.

5. The method according to claim 4, wherein, The N1 value can be multiple N1 values. The method further includes: selecting one of the multiple N1 values ​​as the N1 value based on the network timing offset value and / or bandwidth SCS parameter. And / or, The value of N2 includes multiple N2 values, and the method further includes: selecting one of the multiple N2 values ​​as the value of N2 based on the network timing offset value and / or bandwidth SCS parameter.

6. The method according to claim 4 or 5, wherein, The OFDM symbols in the network where the UE is located are defined as types, which include any one of uplink, downlink, and flexible. The available uplink channel resources for random access include at least one of the following: The effective uplink channel resources are determined according to the time slot format configured in the network device; The uplink channel resources that overlap with at least one of the OFDM symbols used in the uplink bandwidth that are determined to be flexible are not identified as valid uplink channel resources. The OFDM symbols used are not identified as valid uplink channel resources if they overlap with at least one of the OFDM symbols identified as downlink in the downlink bandwidth.

7. A method for configuring resources for random access, performed by a user equipment (UE), wherein the UE does not have full-duplex capability, comprising: Determine the available uplink channel resources in the uplink bandwidth that can be used to transmit uplink random access signals; Select from the available uplink channel resources to configure uplink random access channel resources for transmitting uplink random access signals; at least when transmitting the uplink random access signals using the uplink random access channel resources, the available uplink channel resources for random access are determined to include at least one of the following: The uplink channel resources that overlap in the time domain with at least one of the N1 OFDM symbols following the OFDM symbols used for receiving downlink random access signals in the downlink bandwidth are not determined as the valid uplink channel resources, where N1 is an integer and is determined based on the switching time of the UE from downlink operating state to uplink operating state and the network timing offset value in the network in which the UE is located. The uplink channel resources that do not overlap in the time domain with at least one of the N2 OFDM symbols preceding the OFDM symbols used to receive downlink random access signals in the downlink bandwidth are not determined as the valid uplink channel resources, where N2 is an integer and is determined based on the handover time of the UE from the uplink operating state to the downlink operating state and the network timing offset value in the network in which the UE is located.

8. The method according to claim 7, wherein, At least when transmitting the uplink random access signal using the uplink random access channel resources, not receiving downlink signals on OFDM that overlap in the time domain with the OFDM symbols used by the uplink random access channel resources includes: During the period when the uplink random access channel resources are not used to transmit the uplink random access signal, reception of common downlink signals on OFDM that overlap in the time domain with the OFDM symbols used by the uplink random access channel resources is permitted.

9. The method according to claim 7 or 8, wherein, The OFDM symbols in the network where the UE is located are defined as types, which include any one of uplink, downlink, and flexible. The available uplink channel resources for random access include at least one of the following: The effective uplink channel resources are determined according to the time slot format configured in the network device; The uplink channel resources that overlap with at least one of the OFDM symbols used in the uplink bandwidth that are determined to be flexible are not identified as valid uplink channel resources. The OFDM symbols used are not identified as valid uplink channel resources if they overlap with at least one of the OFDM symbols identified as downlink in the downlink bandwidth.

10. A user equipment, comprising: processor; as well as Memory, which stores instructions The instructions, when executed by the processor, perform the method according to any one of claims 1 to 9.

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