Method and apparatus for mapping downlink signal to uplink signal resource, and device

Abstract

The present application relates to the field of communications, and discloses a method and apparatus for mapping a downlink signal to an uplink signal resource, and a device. The method for mapping the downlink signal to the uplink signal resource in the embodiments of the present application comprises: on the basis of the resource type of the downlink signal, a terminal determines an uplink signal resource corresponding to the downlink signal; the terminal sends an uplink signal on the basis of the uplink signal resource, wherein the resource type of the uplink signal resource comprises at least one of the following: an uplink sub-band and an uplink time unit. In the embodiments of the present application, the terminal can determine, on the basis of the resource type of the downlink signal, the uplink signal resource corresponding to the downlink signal, and the resource type of the uplink signal resource can support a duplex mode, thereby improving the system resource utilization rate, reducing the time delay, and improving the uplink coverage.

Description

Method, device and equipment for mapping downlink signal to uplink signal resources

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on December 22, 2023, with application number 202311794398.6 and invention name “Method, device and apparatus for mapping downlink signal to uplink signal resources”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of communications, and more specifically, to a method, apparatus, and device for mapping downlink signals to uplink signal resources. Background Art

[0004] In cellular networks, half-duplex mode and full-duplex mode are introduced to more flexibly utilize limited spectrum resources. In half-duplex mode, only uplink or downlink transmission can be performed at the same time, but not both. In full-duplex mode, uplink and downlink transmission can be performed simultaneously at different frequency domain locations at the same time.

[0005] At present, there is an association between the random access opportunity (RACH Occasion, RO) and the synchronization signal block (Synchronization Signal Block, SSB) actually sent. For example, one SSB may be associated with multiple ROs, or multiple SSBs may be associated with one RO. The RO can be located on an uplink symbol or a flexible symbol.

[0006] However, after the introduction of duplex mode, the current RO design cannot take advantage of duplex. How to map SSB to RO in duplex mode is a problem that needs to be solved. Summary of the Invention

[0007] The embodiments of the present application provide a method, apparatus and device for mapping downlink signals to uplink signal resources. The terminal can determine the type of uplink signal resource to which the downlink signal is mapped based on the resource type where the downlink signal is located, and the type of uplink signal resource can support duplex mode, thereby improving system resource utilization and reducing latency, and also improving uplink coverage, and can solve the problem of SSB to RO mapping in duplex mode.

[0008] In order to simplify the description, this application only focuses on describing the uplink subband (located in the downlink time unit or the uplink time unit or the flexible time unit) and the uplink time unit (not configured with a subband).

[0009] The present application can also be applied to flexible time units, including: flexible time units with no subband configured, flexible time units with only uplink subband configured, flexible time units with only downlink subband configured, and flexible time units with both uplink and downlink subbands configured.

[0010] In an embodiment of the present application, for downlink signals, they can be transmitted in a downlink time unit, or in a downlink subband within a downlink time unit or an uplink time unit, or in a flexible time unit (without a configured subband), or in a downlink subband of a flexible time unit configured with a downlink subband, or in a non-uplink subband and guard interval (GB) resource of a flexible time unit configured with only an uplink subband.

[0011] In an embodiment of the present application, the uplink signal can be transmitted in an uplink time unit, in a downlink time unit or in an uplink subband within an uplink time unit, in a flexible time unit (without a configured subband), in an uplink subband of a flexible time unit configured with an uplink subband, or in a non-downlink subband and guard interval (GB) resource of a flexible time unit configured with only a downlink subband.

[0012] The RO described in the embodiment of the present application may include an RO located in a UL sub-band and an RO located in a UL time domain unit (not configured with a sub-band).

[0013] The RO described in the embodiments of the present application may also include RO resources that span at least two time units. If a RO spans different time domain unit types (e.g., UL SB and uplink time domain unit), the network may configure the RO to belong to a specific time domain unit type, for example, a RO belonging to a UL SB or a RO belonging to an uplink time domain unit.

[0014] Thus, according to the above situation, the mapping of the downlink signal to the uplink signal can generate multiple combinations.

[0015] In a first aspect, a method for mapping downlink signals to uplink signal resources is provided, comprising:

[0016] The terminal determines, according to the resource type of the downlink signal, an uplink signal resource corresponding to the downlink signal;

[0017] The terminal sends an uplink signal according to the uplink signal resource;

[0018] The resource type of the uplink signal resource includes at least one of the following:

[0019] Uplink subband, uplink time unit.

[0020] In a second aspect, a method for mapping downlink signals to uplink signal resources is provided, including:

[0021] The network side device sends configuration information to the terminal;

[0022] The configuration information is used to configure the time domain unit type where the uplink signal resource corresponding to the downlink signal is located based on the time domain unit type where the downlink signal is located;

[0023] The resource type of the uplink signal resource includes at least one of the following:

[0024] Uplink subband, uplink time unit.

[0025] In a third aspect, a device for mapping downlink signals to uplink signal resources is provided, including:

[0026] a processing unit, configured to determine an uplink signal resource corresponding to the downlink signal according to a resource type of the downlink signal;

[0027] a transceiver unit, configured to send an uplink signal according to the uplink signal resource;

[0028] The resource type of the uplink signal resource includes at least one of the following:

[0029] Uplink subband, uplink time unit.

[0030] In a fourth aspect, a device for mapping downlink signals to uplink signal resources is provided, including:

[0031] A transceiver unit, configured to send configuration information to a terminal;

[0032] The configuration information is used to configure the time domain unit type where the uplink signal resource corresponding to the downlink signal is located based on the time domain unit type where the downlink signal is located;

[0033] The resource type of the uplink signal resource includes at least one of the following:

[0034] Uplink subband, uplink time unit.

[0035] In a fifth aspect, a terminal is provided, comprising a transceiver, a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0036] In a sixth aspect, a terminal is provided, comprising a processor and a communication interface;

[0037] The processor is configured to determine an uplink signal resource corresponding to the downlink signal according to a resource type of the downlink signal; and the communication interface is configured to send an uplink signal according to the uplink signal resource.

[0038] The resource type of the uplink signal resource includes at least one of the following:

[0039] Uplink subband, uplink time unit.

[0040] In the seventh aspect, a network side device is provided, which includes a transceiver, a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0041] In an eighth aspect, a network-side device is provided, including a processor and a communication interface;

[0042] Wherein, the communication interface is used to send configuration information to the terminal;

[0043] The configuration information is used to configure the time domain unit type where the uplink signal resource corresponding to the downlink signal is located based on the time domain unit type where the downlink signal is located;

[0044] The resource type of the uplink signal resource includes at least one of the following:

[0045] Uplink subband, uplink time unit.

[0046] In the ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0047] In the tenth aspect, a wireless communication system is provided, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.

[0048] In the eleventh aspect, a chip is provided, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0049] In the twelfth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the method for mapping downlink signals to uplink signal resources as described in the first aspect or the second aspect.

[0050] In an embodiment of the present application, the terminal can determine the uplink signal resource corresponding to the downlink signal based on the resource type where the downlink signal is located, and the resource type where the uplink signal resource is located can support the duplex mode, thereby improving system resource utilization and reducing latency, and also improving uplink coverage. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] FIG1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application;

[0052] FIG2 is a schematic diagram of a full-duplex system provided by the present application;

[0053] FIG3 is a schematic diagram of another full-duplex system provided by the present application;

[0054] FIG4 is a schematic diagram of a gNB full-duplex and UE full-duplex provided in this application;

[0055] FIG5 is a schematic diagram of full-duplex and guard interval (GB) provided by the present application;

[0056] FIG6 is a schematic flowchart of a method for mapping downlink signals to uplink signal resources according to an embodiment of the present application;

[0057] FIG7 is a schematic diagram of a full-duplex mode and a guard interval according to an embodiment of the present application;

[0058] FIG8 is a schematic diagram of a duplex configuration and a duplex mode cycle according to an embodiment of the present application;

[0059] FIG9 is a schematic diagram of an SSB to RO mapping period, an SSB to RO association period, and an SSB to RO association mode period according to an embodiment of the present application;

[0060] FIG10 is a schematic diagram of an SSB to RO mapping provided according to an embodiment of the present application;

[0061] FIG11 is a schematic diagram of another SSB to RO mapping provided according to an embodiment of the present application;

[0062] FIG12 is a schematic diagram of another SSB to RO mapping provided according to an embodiment of the present application;

[0063] FIG13 is a schematic diagram of another SSB to RO mapping provided according to an embodiment of the present application;

[0064] FIG14( a ) to FIG14 ( c ) are schematic diagrams of time domain unit types and RO types supported by network-side devices and terminals of SBFD according to an embodiment of the present application;

[0065] FIG15 is a schematic flowchart of another method for mapping downlink signals to uplink signal resources according to an embodiment of the present application;

[0066] FIG16 is a schematic block diagram of a device for mapping downlink signals to uplink signal resources according to an embodiment of the present application;

[0067] FIG17 is a schematic block diagram of another apparatus for mapping downlink signals to uplink signal resources according to an embodiment of the present application;

[0068] FIG18 is a schematic block diagram of a communication device provided according to an embodiment of the present application;

[0069] FIG19 is a schematic diagram of the hardware structure of a terminal provided according to an embodiment of the present application;

[0070] Figure 20 is a schematic block diagram of a network-side device provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0071] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0072] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0073] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0074] It is worth noting that the technology described in the embodiments of the present application is not limited to the Internet of Things (IoT) system, but can also be used in other wireless communication systems, such as Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), Bluetooth systems, or other systems. In the embodiments of the present application, the terms "system" and "network" are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these techniques can also be applied to systems other than NR systems, such as 6G (6 th Generation, 6G) communication system.

[0075] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, vehicle-mounted controller, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application.

[0076] The network side device 12 may include an access network device or a core network device.

[0077] Access network equipment may also be referred to as radio access network (RAN) equipment, radio access network functions, or radio access network units. Access network equipment may include base stations, wireless local area network (WLAN) access points (APs), or wireless fidelity (WiFi) nodes. Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home evolved Node B (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0078] Among them, the core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (MME), access mobility management function (AMF), session management function (SMF), user plane function (UPF), policy control function (PCF), policy and charging rules function unit (PCRF), edge application service discovery function (EASDF), unified data management (UDM), unified data repository (UDR), home user server (HSS), centralized network configuration (CNC), network storage function (NRF), network exposure function (NEF), local NEF (L-NEF), binding support function (BSF), application function ( Function, AF), Network Data Analytics Function (NWDAF), Location Management Function (LMF), etc. It should be noted that in the embodiment of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0079] To facilitate a better understanding of the embodiments of the present application, the random access process related to the present application is described.

[0080] The random access procedure may be a contention-based random access procedure or a non-contention-based random access procedure. The random access procedure may be a four-step random access procedure (also known as a Type-1 random access procedure) or a two-step random access procedure (also known as a Type-2 random access procedure).

[0081] In four-step random access (4-step RACH), the UE first sends message 1 (Msg1) to the network, which contains a preamble. After the network detects the preamble, it sends message 2 (Msg2) or a random access response (RAR) message, which contains the preamble number detected by the network and the uplink radio resources allocated to the UE for sending message 3 (Msg3). After receiving Msg2, the UE confirms that at least one of the preamble numbers carried in Msg2 matches the number of the preamble it sent. Then, based on the resources indicated by the RAR, it sends Msg3 containing contention resolution information. After receiving Msg3, the network sends message 4 (Msg4) containing contention resolution information. Upon receiving Msg4, the UE confirms that the resolution information is consistent with the contention resolution information sent in Msg3, thus completing four-step random access.

[0082] The network includes uplink grant (UL grant) information in the RAR to indicate the scheduling information of the Msg3 Physical Uplink Shared Channel (PUSCH), and includes information such as the Random Access Preamble ID (RAPID), the Temporary Cell Radio Network Temporary Identity (TC-RNTI), and the Timing Advance (TA). If the network does not receive the Msg3 PUSCH, it can schedule the retransmission of the Msg3 PUSCH in the Physical Downlink Control Channel (PDCCH) scrambled by the TC-RNTI.

[0083] For the contention random access process, different UEs randomly select preambles for transmission, so different UEs may select the same preamble to send on the same time-frequency radio resources (RACH opportunity (RACH Occasion, RO) resources). This situation can be understood as a UE preamble conflict. In this case, different UEs will receive the same RAR. At this time, different UEs will transmit Msg3PUSCH according to the scheduling information in the RAR UL grant. The network decodes the PUSCH (including contention resolution information) sent by the UE on the Msg3PUSCH scheduling resources, so the network will include the contention resolution information received in Msg3 in Msg4. If the contention resolution information in Msg4 received by the UE matches the contention resolution information sent by the UE in Msg3PUSCH, the UE considers that the contention resolution is successful. If they do not match, the contention resolution is considered unsuccessful.

[0084] If the contention resolution is unsuccessful, the UE reselects RACH resources, performs physical random access channel (PRACH) transmission, and makes the next random access attempt.

[0085] In two-step random access (2-step RACH), the first step is for the UE to send MsgA to the network. After receiving MsgA, the network sends MsgB to the UE. If the UE does not receive MsgB within a certain period of time, the UE increments the counter that counts the number of times MsgA has been sent and resends MsgA. If the counter reaches a certain threshold, the UE switches from the 2-step random access process to the 4-step random access process.

[0086] MsgA consists of the MsgA preamble and MsgA PUSCH parts. The preamble part is sent on the Ro used for 2-step RACH, and the PUSCH part is sent on the MsgA PUSCH resources associated with the MsgA preamble and Ro. MsgA PUSCH resources are a set of PUSCH resources configured for each PRACH time slot, including time-frequency resources and demodulation reference signal (DMRS) resources, and are associated with the PRACH resources within the PRACH slot.

[0087] To facilitate a better understanding of the embodiments of the present application, the selection of random access resources related to the present application and the mapping of synchronization signal blocks (SSBs) to ROs are explained.

[0088] In NR, a cell can configure multiple frequency division multiplexing (FDM) PRACH transmission opportunities or PRACH Occasions (PRACH Occasions), also referred to as random access opportunities (ROs), at a single PRACH transmission time location. At a given moment, the number of ROs that can be FDMed can be: {1, 2, 4, 8}. At a given moment, there are eight RO resources distributed across different frequencies.

[0089] The random access preamble can only be transmitted on the time domain resources (i.e., RO resources) configured by the parameter PRACH Configuration Index (PRACHConfigurationIndex). The random access preamble can only be transmitted on the frequency domain resources configured by the parameter prach-FDM. The PRACH frequency domain resources n RA ∈{0,1,...,M-1}, where M is equal to the high-level parameter prach-FDM. At the time of initial access, the PRACH frequency domain resource n RA The PRACH frequency domain resource n is numbered in ascending order starting from the lowest frequency RO resource in the initial active uplink bandwidth part. Otherwise, the PRACH frequency domain resource n is RA The RO resources are numbered in ascending order starting from the RO resource with the lowest frequency in the active uplink bandwidth part.

[0090] In NR, there is an association between the RO and the SSB actually transmitted. One SSB may be associated with multiple ROs, or multiple SSBs may be associated with one RO (in this case, different SSBs correspond to different preamble codes). Typically, the base station can use different beams to transmit different SSBs, and the corresponding UE sends the preamble on the RO associated with the SSB. In this way, the UE selects the RO / "RO and preamble combination" associated with the SSB with a good signal based on the strength of the received downlink beam / SSB to send Msg1.

[0091] In this way, the network can determine the SSB selected by the UE based on the received preamble's RO or "RO and preamble combination" and send Msg2 on the downlink beam corresponding to the SSB to ensure the reception quality of the downlink signal.

[0092] It should be noted that SSB can also be called synchronization signal / physical broadcast channel block (SS / PBCH block).

[0093] To facilitate a better understanding of the embodiments of the present application, the PRACH time domain resource location (period, RO, etc.) related to the present application is described.

[0094] PRACH resources are periodic resources. In the time domain, different PRACH Preamble formats have different durations. The time domain position of PRACH resources is defined by the PRACH configuration period, radio frame index, subframe / time slot index, starting PRACH orthogonal frequency-division multiplexing (OFDM) symbol index in the time slot and the number of time domain ROs in the time slot. Among them, the candidate values ​​of the PRACH configuration period are {10, 20, 40, 80, 160} ms. In each PRACH configuration period, PRACH resources are only distributed in a valid radio frame (10ms). The valid radio frame contains one or more subframes / time slots. There is only one starting PRACH OFDM symbol index in each subframe / time slot, and there is one or more time domain ROs in a time slot. In the frequency domain, different PRACH Preamble formats and subcarrier spacing jointly determine the frequency domain bandwidth occupied by PRACH. For the long preamble format with a length of 839, when the PRACH subcarrier spacing is 1.25 kHz, the frequency domain bandwidth is 1.08 MHz (corresponding to 6 physical resource blocks (PRBs) with a PUSCH subcarrier spacing of 15 kHz).

[0095] To facilitate a better understanding of the embodiments of the present application, the SSB-RO mapping cycle related to the present application is described.

[0096] In NR, there is an association between the RO and the actual SSB transmitted. The RO is associated with the SSB in the frequency domain (from low frequency to high frequency) and then in the time domain. One SSB may be associated with multiple consecutive ROs, or multiple SSBs may be associated with one RO (in this case, different SSBs correspond to different preambles). This is configured by the network through the parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB. After all SSBs are associated with the RO in one round, it constitutes an SSB-RO mapping cycle.

[0097] To facilitate a better understanding of the embodiments of the present application, the SSB-RO association cycle related to the present application is described.

[0098] An SSB to RO association cycle may contain one or more SSB-RO mapping cycles.

[0099] The association period for SSB mapping to RO is defined as the period during which at least one round of SSB to RO mapping is completed, so that each actually transmitted SSB is mapped to at least one RO. The association period for SSB mapping to RO must be an integer multiple of the PRACH configuration period, and the multiple is the minimum value listed in Table 1 below.

[0100] The association period is calculated from radio frame 0. After completing one round of SSB-to-RO mapping within an association period, the next round of mapping continues until insufficient ROs remain to complete another round of SSB-to-RO mapping. If insufficient ROs remain to complete another round of SSB-to-RO mapping, these remaining ROs form an invalid RO set. All ROs in this invalid RO set cannot be associated with an SSB and cannot be used for PRACH transmission.

[0101] Table 1

[0102] To facilitate a better understanding of the embodiments of the present application, the SSB-RO association pattern period related to the present application is described.

[0103] Because the number of valid ROs contained in the SSB to RO association period is variable under some configuration conditions, the NR protocol further defines the time domain repetition period of the SSB to RO association period through the association pattern period. The maximum value of the SSB to RO association pattern period is 160ms.

[0104] An SSB to RO association pattern period may include one or more SSB-RO association periods, and the mapping of SSB to RO is repeated with the association pattern period as a period.

[0105] To facilitate a better understanding of the embodiments of the present application, the enhanced duplex mode related to the present application is described.

[0106] In 5G mobile communication systems, full-duplex technology has been enhanced to accommodate diverse scenarios and service requirements. Key 5G scenarios include enhanced mobile broadband (eMBB), ultra-reliable and low-latency communication (URLLC), and massive machine-type communication (mMTC). These scenarios place high demands on the system for reliability, low latency, high bandwidth, and wide coverage.

[0107] In NR, configuring full-duplex operation can significantly improve the latency and coverage performance of time division duplex (TDD) systems. For example, subband non-overlapping full duplex reduces self-interference due to the non-overlapping uplink and downlink subbands, thus reducing transmission latency and enhancing coverage.

[0108] For a downlink time slot (DL slot) (configured by TDD uplink and downlink common (tdd-UL-DL-

[0109] ConfigurationCommon) or TDD uplink and downlink dedicated configuration (TDD-UL-DL-ConfigurationDedicated) configuration) downlink (downlink, DL), the network configures the downlink bandwidth part (Band Width Part, BWP) for the UE, such as time slot 1 in Figure 2.

[0110] For an uplink (UL) timeslot (configured by TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated), the network configures a UL BWP for the UE, such as timeslot 4 in FIG3 .

[0111] For a downlink timeslot (DL slot) (configured by TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated), in a full duplex scenario, as shown in Figure 2, there are the following cases:

[0112] Case 1: Configure DL BWP, such as slot 1;

[0113] Case 2: Configure DL BWP and uplink sub-band (UL sub-band, UL SB), such as slot 2.

[0114] For an uplink timeslot (UL slot), in a full duplex scenario, as shown in Figure 3, there are the following cases:

[0115] Case 3: Configure UL BWP, such as slot 4;

[0116] Case 4: Configure UL BWP and downlink sub-band (DL sub-band, DL SB), such as slot 5.

[0117] For sub-band full duplex (SBFD) operation, one SBFD sub-band consists of one resource block (RB) or a set of consecutive RBs with the same transmission direction.

[0118] The time unit (e.g., slot or symbol) in which the gNB uses SBFD operation may be referred to as an SBFD time unit (e.g., slot or symbol).

[0119] An exemplary duplex mode is: full-duplex on the network side, where uplink and downlink transmissions can occur simultaneously at different frequency domain locations at the same time. To prevent interference between uplink and downlink, a guard band (Guard Band) can be reserved between the frequency domain locations corresponding to different transmission directions (corresponding to duplex subbands); half-duplex on the terminal side, consistent with TDD, where only uplink or downlink transmissions can occur at the same time, not both. It is understood that in this duplex mode, uplink and downlink transmissions on the network side can only be directed to different terminals at the same time.

[0120] Another exemplary duplex mode is: both the terminal side and the network side are full-duplex, as shown in Figure 4, that is, both the terminal side and the network side work in duplex mode. Specifically, for the terminal side and the network side, at the same time, UL transmission and DL transmission can be carried out simultaneously at different frequency domain positions.

[0121] For full-duplex operation at the UE side, a larger guard band (GB) (larger than the GB required for full-duplex (FD) operation at the base station) may be required to suppress self-interference, as shown in FIG5 .

[0122] For a communication device, simultaneous UL and DL transmissions can cause self-interference. To ensure transmission in the interfered direction, the communication device needs to have self-interference cancellation capabilities, such as reserving a guard band between the receive and transmit bands. However, this reduces UE throughput.

[0123] Currently, UEs can only send preambles in uplink symbols or flexible symbols. For a network configuration primarily focused on downlink services, the time domain resources available for UE preamble transmission are limited, potentially causing conflicts between UEs and hindering coverage for PRACH and Msg 3. With the introduction of duplex mode, UEs can send preambles in UL SBs, improving coverage for PRACH and other services. However, the mapping of SSBs to ROs remains a challenge.

[0124] Based on the above problems, the present application proposes a mapping scheme for downlink signals to uplink signal resources. The terminal can determine the uplink signal resources corresponding to the downlink signal based on the resource type where the downlink signal is located, and the resource type where the uplink signal resource is located can support the duplex mode, thereby improving the system resource utilization and reducing the delay, and also improving the uplink coverage.

[0125] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0126] FIG6 is a schematic flow chart of a method 200 for mapping downlink signals to uplink signal resources according to an embodiment of the present application. As shown in FIG6 , the method 200 for mapping downlink signals to uplink signal resources may include at least part of the following contents:

[0127] S210, the terminal determines an uplink signal resource corresponding to the downlink signal according to the resource type of the downlink signal;

[0128] S220, the terminal sends an uplink signal according to the uplink signal resource;

[0129] The resource type of the uplink signal resource includes at least one of the following:

[0130] Uplink subband, uplink time unit.

[0131] It should be understood that FIG6 shows the steps or operations of the method 200 for mapping downlink signals to uplink signal resources, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or variations of the operations in FIG6 .

[0132] Correspondingly, in the embodiment of the present application, the network side device can receive the uplink signal according to the uplink signal resource.

[0133] In some embodiments, the downlink signal includes but is not limited to at least one of the following:

[0134] Synchronization Signal Block (SSB), Channel State Information Reference Signal (CSI-RS).

[0135] The SSB described in the embodiments of the present application can be used interchangeably with the SS / PBCH block, and can also be called any information block or resource block that contains at least one of a synchronization signal, a broadcast signal, a broadcast channel (PBCH), other system messages, and a downlink broadcast channel.

[0136] In some embodiments, the uplink signal resource includes but is not limited to at least one of the following:

[0137] Random access opportunity (RACH Occasion, RO), configure granted physical uplink shared channel (Configure Grant Physical Uplink Shared Channel, CG-PUSCH) resources, sounding reference signal (Sounding Reference Signal, SRS) resources.

[0138] The RO and PRACH Occasion described in the embodiments of the present application both refer to the time-frequency resources required for sending a PRACH sequence, wherein the PRACH resources may include PRACH time-frequency resources or a PRACH sequence.

[0139] Optionally, the RO described in the embodiment of the present application may include at least one of the following: a shared RO (shared RO), a separate RO (Separate RO), and a separately configured RO (Separately configured RO).

[0140] Specifically, a shared RO refers to mapping different downlink signals to the same RO resource set. This RO resource pool contains both PRACH sequences for one type of PRACH transmission and PRACH sequences for another type of PRACH transmission, i.e., the preamble format. A separate RO or separately configured RO refers to an additional PRACH configured solely for different types of PRACH transmissions. Different downlink signals can be mapped to different RO resource sets, and the RO resource sets can be configured separately.

[0141] Exemplarily, the correspondence between downlink signal and uplink signal resources may include at least one of the following:

[0142] SSB to RO mapping;

[0143] Mapping of SSB to CG-PUSCH resources;

[0144] Mapping of SSB to SRS resources;

[0145] CSI-RS to RO mapping;

[0146] Mapping of CSI-RS to CG-PUSCH resources;

[0147] Mapping of CSI-RS to SRS resources.

[0148] In the embodiment of the present application, the resource type of the uplink signal resource includes at least one of the following: uplink subband, uplink time unit, so as to support duplex mode, that is, the uplink signal resource can be used by the terminal to transmit uplink signals in duplex mode.

[0149] In an embodiment of the present application, the terminal can determine the uplink signal resource mapped to the downlink signal based on the resource type where the downlink signal is located, and the resource type where the uplink signal resource is located can support the duplex mode, thereby improving system resource utilization and reducing latency, and also improving uplink coverage.

[0150] To simplify the description, the embodiments of the present application focus on describing only the uplink signal resources of the uplink subband (located in the downlink time unit or the uplink time unit or the flexible time unit) and the uplink time unit (without subband configuration).

[0151] The embodiments of the present application can also be applied to flexible time units, including: flexible time units with no subband configured, flexible time units with only uplink subband configured, flexible time units with only downlink subband configured, and flexible time units with both uplink and downlink subbands configured.

[0152] In an embodiment of the present application, for downlink signals, they can be transmitted in a downlink time unit, or in a downlink subband within a downlink time unit or an uplink time unit, or in a flexible time unit (without a configured subband), or in a downlink subband of a flexible time unit configured with a downlink subband, or in a non-uplink subband and guard interval (GB) resource of a flexible time unit configured with only an uplink subband.

[0153] In an embodiment of the present application, the uplink signal can be transmitted in an uplink time unit, in a downlink time unit or in an uplink subband within a downlink time unit, in a flexible time unit (no subband configured), in an uplink subband of a flexible time unit configured with an uplink subband, or in a non-downlink subband and guard interval (GB) resource of a flexible time unit configured only with a downlink subband.

[0154] It should be noted that the uplink resources of enhanced duplexing may refer to transmission resources that support uplink subbands on downlink time units, or transmission resources that support downlink subbands on uplink time units, or transmission resources that support at least one of uplink subbands and downlink subbands on flexible time units.

[0155] The RO described in the embodiment of the present application may include an RO located in a UL sub-band and an RO located in a UL time domain unit (not configured with a sub-band).

[0156] The RO described in the embodiments of the present application may also include RO resources that span at least two time units. If a RO spans different time domain unit types (e.g., UL SB and uplink time domain unit), the network may configure the RO to belong to a specific time domain unit type, for example, a RO belonging to a UL SB or a RO belonging to an uplink time domain unit.

[0157] Thus, according to the above situation, the mapping of the downlink signal to the uplink signal can generate multiple combinations.

[0158] In some embodiments, the time unit described in the embodiments of the present application includes but is not limited to at least one of the following:

[0159] OFDM symbol, time slot, subframe, frame, microsecond, millisecond, second, minute, hour, day.

[0160] The duplex mode described in the embodiment of the present application may be, for example, an enhanced duplex mode, or cross duplex (XDD), enhanced full duplex, or enhanced full duplex mode. The embodiment of the present application is not limited to this. The duplex mode described in the embodiment of the present application may be expressed as: supporting an uplink subband on a downlink time unit, or supporting a downlink subband on an uplink time unit, or supporting at least one of an uplink subband and a downlink subband on a flexible time unit, or uplink or downlink resource transmission on a set of at least two of the above three time units.

[0161] In the embodiment of the present application, the type of uplink signal resource may also be replaced by the type of uplink signal resource set.

[0162] In an embodiment of the present application, the terminal supports full-duplex and the network-side device supports full-duplex; or, the terminal supports half-duplex and the network-side device supports full-duplex.

[0163] Exemplarily, the terminal supporting half-duplex may mean that the terminal can only perform downlink reception (eg, receiving a DL signal or a DL channel) or uplink transmission (eg, transmitting a UL signal or a UL channel) in one time unit.

[0164] Exemplarily, the terminal side supports full-duplex, which may mean that uplink transmission (eg, transmission of a UL signal or a UL channel) and downlink reception (eg, reception of a DL signal or a DL channel) can be performed simultaneously in one time unit.

[0165] In the embodiment of the present application, the network side device adopts full-duplex mode to achieve the purpose of enhancing coverage, reducing transmission delay, and improving resource utilization efficiency. The terminal adopts full-duplex mode to achieve the above gains while also improving DL or UL throughput.

[0166] In some embodiments, when using full-duplex mode, a guard band (GB) is reserved between UL and DL transmissions to achieve frequency isolation and reduce self-interference. Because the terminal's self-interference cancellation capability is weaker than that of the network-side equipment, the GBs reserved by the terminal when using forward duplex mode are larger than those reserved by the network-side equipment. This means that the terminal requires more reserved physical resource blocks (PRBs) as guard bands.

[0167] For example, Figure 7 (a) shows the subband and GB configuration of the network device in full-duplex mode. Specifically, it shows the time-frequency resources where the UL SB, DL SB, and GB of the network device reside. In the UL SB, the network device receives UL channels or UL signals from the terminal. In the DL SB, the network device transmits DL channels or DL ​​signals to the terminal. DL transmissions from the network device can cause self-interference to UL reception.

[0168] For example, (b) in FIG7 is the subband and GB configuration on the terminal side in full-duplex mode, that is, the network side device configures the time-frequency resources where the UL SB and DL SB and GB are located for the terminal, and the UL transmission of the terminal will cause self-interference to the DL reception.

[0169] In some embodiments, the size of the GB reserved for a terminal is related to the capability of the terminal. For example, the GB reserved for a terminal with strong self-interference cancellation capability is smaller than the GB reserved for a terminal with weak self-interference cancellation capability.

[0170] In some embodiments, the network side device may notify the duplex mode in the system information block 1 (SIB 1) or the master information block (MIB), including at least one of the following: duplex configuration period, duplex mode period, uplink and downlink configuration (UL-DL config common).

[0171] For example, taking the uplink signal resource as RO, as shown in Figure 8, the uplink and downlink configuration (UL-DL config common) is DDDDU with a period of 5ms. The duplex configuration is 11100 00000, the mode is DUD, and the period is 10ms. The duplex mode period is 10ms (different mode periods can change the enhanced duplex mode, for example, DUD, DU, UD, etc.). Where D represents downlink and U represents uplink. Optionally, the effective RO may be different for each duplex mode period.

[0172] In some embodiments, the correspondence between downlink signal and uplink signal resources is associated with at least one of the following:

[0173] Duplex configuration period;

[0174] Duplex mode period;

[0175] a mapping mode period, the mapping mode period being a time period during which all types of uplink signal resources are mapped at least once to all preconfigured downlink signals;

[0176] Uplink and downlink configuration;

[0177] A specific time unit, where the specific time unit is used for mapping a downlink signal to an uplink signal resource;

[0178] The mapping period of downlink signal to uplink signal resources;

[0179] The association period of downlink signal to uplink signal resources;

[0180] The association pattern period of downlink signal to uplink signal resources.

[0181] For example, taking the downlink signal as SSB and the uplink signal resource as RO, assuming that 8 SSBs are pre-configured, in this case, the mapping mode period can be the time when the RO on the uplink subband and the RO on the uplink time unit are mapped at least once by 8 SSBs.

[0182] For example, the mapping period of downlink signal to uplink signal resources can refer to the relevant description of the mapping period of SSB to RO mentioned above, which will not be repeated here for the sake of brevity.

[0183] For example, the association period of the downlink signal to the uplink signal resource can refer to the relevant description of the association period of the SSB to RO mentioned above, and for the sake of brevity, it will not be repeated here.

[0184] For example, the association pattern period of the downlink signal to the uplink signal resource can refer to the relevant description of the association pattern period of the SSB to RO mentioned above, and for the sake of brevity, it will not be repeated here.

[0185] Optionally, the mapping mode period may be agreed upon by a protocol, or the mapping mode period may be configured by the network side.

[0186] Optionally, the specific time unit may be a time unit specifically used for mapping downlink signals to uplink signal resources.

[0187] Optionally, the specific time unit may be agreed upon by a protocol, or the specific time unit may be configured by the network side.

[0188] Optionally, the mapping period of the downlink signal to the uplink signal resource may be agreed upon by a protocol, or the mapping period of the downlink signal to the uplink signal resource may be configured by the network side.

[0189] Optionally, the association period of the downlink signal to the uplink signal resource may be agreed upon by a protocol, or the association period of the downlink signal to the uplink signal resource may be configured by the network side.

[0190] Optionally, the association pattern period of the downlink signal to the uplink signal resource may be agreed upon by a protocol, or the association pattern period of the downlink signal to the uplink signal resource may be configured by the network side.

[0191] For example, the mapping of downlink signals to uplink signal resources is associated with the duplex configuration period, so that a time window can be determined based on the duplex configuration period, and the mapping of downlink signals to uplink signal resources within the time window can be considered. Optionally, within the time window, the order of mapping downlink signals to uplink signal resources can be agreed upon by the protocol, or the order of mapping downlink signals to uplink signal resources can be configured by the network side.

[0192] For example, the mapping of downlink signals to uplink signal resources is associated with the duplex mode period, so that a time window can be determined based on the duplex mode period, and the mapping of downlink signals to uplink signal resources within the time window can be considered. Optionally, within the time window, the order of mapping downlink signals to uplink signal resources can be agreed upon by the protocol, or the order of mapping downlink signals to uplink signal resources can be configured by the network side.

[0193] For example, the mapping of downlink signals to uplink signal resources is associated with a mapping pattern period, so that a time window can be determined based on the mapping pattern period, and the mapping of downlink signals to uplink signal resources within the time window can be considered. Optionally, within the time window, the mapping order of downlink signals to uplink signal resources can be agreed upon by the protocol, or the mapping order of downlink signals to uplink signal resources can be configured by the network side.

[0194] For example, the mapping of downlink signals to uplink signal resources is associated with the uplink and downlink configurations, so that a time window can be determined based on the uplink and downlink configurations, and the mapping of downlink signals to uplink signal resources within the time window can be considered. Optionally, within the time window, the order of mapping downlink signals to uplink signal resources can be agreed upon by the protocol, or the order of mapping downlink signals to uplink signal resources can be configured by the network side.

[0195] For example, the mapping of downlink signals to uplink signal resources is associated with a specific time unit, so that a time window can be determined based on the specific time unit, and the mapping of downlink signals to uplink signal resources within the time window can be considered. Optionally, within the time window, the order of mapping downlink signals to uplink signal resources can be agreed upon by the protocol, or the order of mapping downlink signals to uplink signal resources can be configured by the network side.

[0196] For example, the mapping of downlink signals to uplink signal resources is associated with the mapping period of downlink signals to uplink signal resources, so that a time window can be determined based on the mapping period of downlink signals to uplink signal resources, and the mapping of downlink signals to uplink signal resources within the time window can be considered. Optionally, within the time window, the mapping order of downlink signals to uplink signal resources can be agreed upon by the protocol, or the mapping order of downlink signals to uplink signal resources can be configured by the network side.

[0197] For example, the mapping of downlink signals to uplink signal resources is associated with the association period of downlink signals to uplink signal resources, so that a time window can be determined based on the association period of downlink signals to uplink signal resources, and the mapping of downlink signals to uplink signal resources within the time window can be considered. Optionally, within the time window, the mapping order of downlink signals to uplink signal resources can be agreed upon by the protocol, or the mapping order of downlink signals to uplink signal resources can be configured by the network side.

[0198] For example, the mapping of downlink signals to uplink signal resources is associated with the association pattern period of downlink signals to uplink signal resources, so that a time window can be determined based on the association pattern period of downlink signals to uplink signal resources, and the mapping of downlink signals to uplink signal resources within the time window can be considered. Optionally, within the time window, the mapping order of downlink signals to uplink signal resources can be agreed upon by the protocol, or the mapping order of downlink signals to uplink signal resources can be configured by the network side.

[0199] In some embodiments, the correspondence between downlink signals and uplink signal resources is determined based on valid uplink signal resources within at least one time domain resource;

[0200] The at least one time domain resource includes at least one of an uplink subband and an uplink time unit determined based on an uplink and downlink configuration or a duplex configuration period or a duplex mode period within the first time window;

[0201] The first time window is associated with one of the following: the mapping mode period, the specific time unit, the mapping period of the downlink signal to the uplink signal resource, the association period of the downlink signal to the uplink signal resource, and the association mode period of the downlink signal to the uplink signal resource.

[0202] Optionally, within the first time window, the mapping order of downlink signals to uplink signal resources may be agreed upon by a protocol, or the mapping order of downlink signals to uplink signal resources may be configured by the network side.

[0203] In some embodiments, effective uplink signal resources are different in different duplex mode periods.

[0204] For example, taking the downlink signal as SSB and the uplink signal resource as RO as an example, SSB and RO are mapped one-to-one. Assume that the PRACH configuration period is 10ms. The SSB period is 80ms, the minimum association period for SSB mapping to RO is 10ms, 20ms and 40ms, and the association mode period for SSB mapping to RO is 160ms. The number of SSBs actually sent in one SSB period is 8. As shown in Figure 9, the even-numbered and odd-numbered PRACH configuration periods contain 8 and 6 valid ROs respectively, and there are 0 valid ROs in the PRACH configuration period containing SSB. The association mode period (160ms) consists of 6 association periods. In the first 150ms (corresponding to radio frames numbered 0-14), each association period includes 4, 1, 2, 4, 2, and 2 PRACH configuration periods, respectively. Radio frame 3 is an odd-numbered radio frame and has 6 ROs. However, according to the definition of the association period for SSB-to-RO mapping, the total number of valid ROs in radio frames 0, 1, 2, and 3 must be a multiple of 8, and the association period for SSB-to-RO mapping must be an integer multiple of the PRACH configuration period. Therefore, radio frame 3 can only have 2 valid ROs. Similarly, radio frames 6 and 14 have only 2 valid ROs, and radio frame 10 has only 4 valid ROs. Specifically, in Figure 9, two ROs (the front ones) in radio frame 2 belong to mapping cycle 1, and six ROs belong to mapping cycle 2. Two ROs (the front ones) in radio frame 9 belong to mapping cycle 5, and four ROs belong to mapping cycle 6. For ease of description, the mapping cycles corresponding to the two SSBs are numbered uniformly. In practice, the mapping cycles corresponding to different SSBs can be numbered separately.

[0205] Exemplarily, taking the downlink signal as SSB and the uplink signal resource as RO as an example, within an SSB to RO mapping period, or, within an SSB to RO association period, or, within an SSB to RO association mode period, the mapping of SSB to RO is determined based on the uplink subband (UL SB) determined by the uplink and downlink configuration or duplex configuration period or duplex mode period and the valid RO within the uplink time unit. Optionally, within time window i (associated with the SSB to RO mapping period or SSB to RO association period or SSB to RO association mode period), the mapping order of SSB to RO is agreed upon by the protocol or configured by the network side.

[0206] For example, as shown in Figure 10, within time window i, SSB to RO are mapped in the following order:

[0207] The Preamble in each RO increases in order of Preamble index;

[0208] When RACH FDM is configured (i.e., multiple ROs in the frequency domain), the RO index in the frequency domain is incremented;

[0209] When multiple ROs are included in the configured PRACH time slot, the RO index in the PRACH time slot is incremented;

[0210] When multiple PRACH time slots are configured, the PRACH time slot index is incremented.

[0211] For example, taking the downlink signal as SSB and the uplink signal resource as RO as an example, within a mapping mode period, the mapping of SSB to RO is determined based on the uplink subband (UL SB) determined by the uplink and downlink configuration or duplex configuration period or duplex mode period and the valid RO within the uplink time unit. It should be noted that for situations where different SSB to RO mapping orders are used, a mapping mode period is defined, and the mapping mode period is at least determined by the duration of ensuring that both types of ROs can be mapped at least once to all SSBs.

[0212] For example, as shown in Figure 11, the mapping order of SSB to RO in time window i is different from the mapping order of SSB to RO in time window i+1. For example, sequential mapping is adopted in time window i, that is, SSB i is mapped to RO i, SSB i+1 is mapped to RO i+1, SSB i+2 is mapped to RO i+2, and SSB i+3 is mapped to RO i+3. For example, reverse mapping is adopted in time window i+1, that is, SSB i+3 is mapped to RO i, SSB i+2 is mapped to RO i+1, SSB i+1 is mapped to RO i+2, and SSB i is mapped to RO i+3. In this way, each SSB can be mapped to two types of RO. When SSB is associated with RO, different SSB candidates may be selected in different time windows.

[0213] For example, taking the downlink signal as SSB and the uplink signal resource as RO as an example, the network side can configure different ssb-perRACH-Occasion, CB-PreamblesPerSSB, or ssb-perRACH-OccasionAndCB-PreamblesPerSSB for terminals with different capabilities. For example, there are two SSBs, the UL SB has two associated ROs, and the uplink time unit has two associated ROs. As shown in Figure 12, the valid ROs used by UEs that do not support enhanced duplexing capabilities are: RO1-2 and RO2-2; ssb-perRACH-Occasion = 1. As shown in Figure 12, the valid ROs used by UEs that support enhanced duplexing capabilities can be: RO1-1, RO2-1, RO1-2, RO2-2; ssb-perRACH-Occasion = 1 / 2.

[0214] In some embodiments, when uplink signal resources located on an uplink subband and uplink signal resources located on an uplink time unit are independently configured, the correspondence between downlink signals and uplink signal resources includes at least one of the following:

[0215] All pre-configured downlink signals are mapped to uplink signal resources located on uplink subbands and uplink signal resources located on uplink time units;

[0216] All pre-configured downlink signals are mapped to uplink signal resources located on the uplink subband;

[0217] All pre-configured downlink signals are mapped to uplink signal resources located in uplink time units.

[0218] For example, taking the downlink signal as an SSB and the uplink signal resource as an RO, the RO located in the UL SB and the RO located in the uplink time unit can be configured independently. For example, as shown in Figure 12, all SSBs are mapped to two types of ROs, or all SSBs are mapped to ROs located in the UL SB, or all SSBs are mapped to ROs located in the uplink time unit. One mapping method is to first map all SSBs to valid ROs in the UL time unit, and then map all SSBs to ROs in the UL SB.

[0219] In some embodiments, when an uplink configuration includes uplink signal resources located on an uplink subband and uplink signal resources located on an uplink time unit, the correspondence between downlink signals and uplink signal resources includes:

[0220] A downlink signal is mapped to at least one of an uplink signal resource located on an uplink subband and an uplink signal resource located on an uplink time unit.

[0221] In some embodiments, when an uplink configuration includes uplink signal resources located on an uplink subband and uplink signal resources located on an uplink time unit, the correspondence between downlink signals and uplink signal resources at least includes: all pre-configured downlink signals are mapped to all uplink signal resources located on the uplink time unit.

[0222] For example, taking the downlink signal as an SSB and the uplink signal resource as an RO, a PRACH configuration includes an RO located in a UL SB and an RO located in an uplink time unit. An SSB is mapped to at least one of the RO located in a UL SB and the RO located in an uplink time unit. Optionally, at least all SSBs are mapped to all ROs located in uplink time units. As shown in Figure 13, SSB3 is only mapped to the RO located in the uplink time unit.

[0223] In some embodiments, if there are at least two downlink signals whose signal quality is greater than or equal to a first threshold, the terminal selects the downlink signal corresponding to the uplink signal resource it supports. Optionally, the first threshold is agreed upon by a protocol, or configured by the network side.

[0224] For example, taking the downlink signal as an SSB and the uplink signal resource as an RO as an example, when the terminal measures the signal quality of multiple SSBs to be greater than or equal to a first threshold, the terminal selects an SSB associated with the RO supported by the terminal according to the capability. For example, as shown in Figure 13, if the terminal does not support SSB 1 mapped to the RO of the UL SB, then other SSBs (SSB 2 or SSB 3) mapped to the RO of the uplink time unit will be selected.

[0225] For example, taking the downlink signal as SSB and the uplink signal resource as RO as an example, if the signal quality of multiple SSBs is greater than or equal to the first threshold and their corresponding ROs are available, the network side can configure the terminal to select SSB according to the RO. Optionally, in a time window, the network side can configure the terminal to give priority to the SSB corresponding to the RO of the UL SB, and then use the SSB corresponding to the RO of the uplink time unit.

[0226] For example, taking the downlink signal as an SSB and the uplink signal resource as an RO, within a time window, if one SSB is associated with multiple types of ROs (located in a UL SB or in an uplink time unit), or multiple SSBs are associated with multiple types of ROs, the network side can configure the order in which the terminal selects ROs, for example, giving priority to ROs in UL SBs and then ROs in UL time domain units; or giving priority to ROs in uplink time units and then ROs in UL SBs.

[0227] In some embodiments, before the terminal determines the uplink signal resource corresponding to the downlink signal according to the resource type of the downlink signal, the downlink signal to uplink signal resource mapping method 200 further includes:

[0228] The terminal receives configuration information from the network side device;

[0229] The configuration information is used to configure the time domain unit type where the uplink signal resource corresponding to the downlink signal is located based on the time domain unit type where the downlink signal is located.

[0230] In some embodiments, the configuration information is sent via at least one of the following signaling:

[0231] System messages (such as System Information Block (SIB) or Master Information Block (MIB)), Radio Resource Control (RRC) signaling, Media Access Control Control Element (MAC CE), and Downlink Control Information (DCI).

[0232] Optionally, the correspondence between downlink signals and uplink signal resources includes at least one of the following:

[0233] The downlink signal on the downlink time unit is mapped to the uplink signal resource on the uplink time unit;

[0234] The downlink signal on the downlink time unit is mapped to the uplink signal resource on the uplink subband;

[0235] The downlink signal on the downlink time unit is mapped to the uplink signal resource on the uplink time unit and the uplink subband;

[0236] The downlink signal on the downlink subband is mapped to the uplink signal resource on the uplink time unit;

[0237] The downlink signal on the downlink subband is mapped to the uplink signal resource on the uplink subband;

[0238] The downlink signal on the downlink subband is mapped to the uplink signal resource on the uplink time unit and the uplink signal resource on the uplink subband.

[0239] For example, taking the downlink signal as an SSB and the uplink signal resource as an RO as an example, the network side can configure the time domain unit type to which the RO to which the SSB is mapped is determined based on the time domain unit type to which the SSB is located. For example, the SSB of a downlink time unit (such as a time slot or symbol) can be mapped only to the RO of an uplink time unit, or the SSB of a downlink time unit (such as a time slot or symbol) can be mapped only to the RO of a UL SB, or the SSB of a downlink time unit (such as a time slot or symbol) can be mapped to both types of ROs, namely, the RO of a UL SB and the RO of an uplink time unit. For another example, the SSB of a DL SB can be mapped only to the RO of a UL SB. For another example, the SSB of a DL SB can be mapped to both types of ROs, namely, the RO of a UL SB and the RO of an uplink time unit. Specifically, as shown in FIG13 , some SSBs are mapped only to a UL SB (SSB 1), some are mapped only to an uplink time unit (SSB 3), and some can be mapped to both a UL SB and an uplink time unit (SSB 3).

[0240] In some embodiments, taking the downlink signal as SSB and the uplink signal resource as RO as an example, the mapping from SSB to RO can be divided into more types. For network-side devices and terminals that support SBFD, there are generally four types of time domain units (symbols or slots), as shown in Figure 14(a): DL symbols, DL symbols configured with UL SB, UL symbols configured with DL SB, and UL symbols. For a configured RO resource (set) (PRACH occasions Physical random-access channel occasions), there may be two types of configurations, namely, Case 1: the RO resource (set) is configured in a UL subband (can be in UL symbols or DL ​​symbols), for example, Type A; Case 2: the RO resource (set) is configured in a UL symbol (no DL subband is configured), for example, Type B.

[0241] Furthermore, the configured RO resources (sets) can be further divided according to whether they overlap with SSBs.

[0242] Configured RO resource (set) / Type 1: The RO resource (set) is configured in a UL signal block (SB) within a DL symbol where an SSB / common DL channel exists, meaning it overlaps with the SSB / common DL channel in the time domain. In this case, uplink transmission by one UE can interfere with the SSB reception of other UEs, a phenomenon known as cross-link interference. If a UE uses this SSB to measure or decode the common DL channel, it will also experience self-interference.

[0243] Configured RO resource (set) / Type 2: The RO resource (set) is configured in a UL SB in a DL symbol where no SSB / common DL channel exists, i.e., it does not overlap with the SSB / common DL channel in time domain. In this case, the uplink transmission of one UE may interfere with the reception of DL channels or signals of other UEs, such as the Physical Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH), and Channel State Information Reference Signal (CSI-RS).

[0244] Configured RO resource (set) / Type 3: RO resource (set) is configured in the UL SB of one UL symbol. The interference situation is similar to that of type 2.

[0245] Configured RO resource (set) / Type 4: RO resource (set) is configured in one UL symbol. In this case, there is no cross-link interference.

[0246] In some embodiments, taking the downlink signal as SSB and the uplink signal resource as RO as an example, different RO types can also be associated with different preamble formats, and different preamble formats can have different lengths. As shown in Figure 14(b), preamble format A is longer than preamble format B, which can provide better coverage performance. The mapping of SSB to different RO types can be done separately or jointly.

[0247] For separate mapping, first map all SSBs to RO type A of preamble format A, and then map all SSBs to RO type B of preamble format B.

[0248] For joint mapping, all SSBs will be mapped to at least one RO type. Each RO type is associated with a preamble format, and different ROs can be associated with different preamble formats.

[0249] Optionally, if different types of ROs overlap in time domain or are close to each other, as shown in FIG14( c ).

[0250] The network-side device can configure overlapping RO types and determine which RO type has a higher priority. For example, if the network-side device configures that RO type A associated with preamble format A has a higher priority, then the RO type B with a lower priority can be processed in at least one of the following methods 1 to 4.

[0251] Method 1: Discard the RO that overlaps with the high-priority RO, and skip the RO number of the RO that overlaps with the high-priority RO. For example, if RO 2 to 3 of type B at time A overlaps with RO of type A, then at time A, RO1 and RO4 of type B are renumbered as RO1 and RO2.

[0252] Method 2: Discard the RO that overlaps with the high-priority RO and the subsequent ROs (in the direction of increasing frequency). That is, at time A, only RO1 of type B is a valid RO.

[0253] Method 3: For the time when an RO is located, if at least one RO overlaps with the high-priority RO, then all ROs at the time when the RO is located are invalid. That is, at time A, RO 1 to 4 of RO type B are all invalid.

[0254] Method 4: All ROs with a distance less than X symbols from the high-priority RO are invalid. The distance Y between RO type A and time B is less than X (X is configured by the network side), and RO type B at time B is an invalid RO.

[0255] In some embodiments, taking the downlink signal as SSB and the uplink signal resource as RO as an example, if the synchronization signal reference signal received power (SS-RSRP) of a certain SSB is greater than rsrp-ThresholdSSB, then select the SSB with SS-RSRP greater than rsrp-ThresholdSSB; otherwise, select any SSB (the SS-RSRP of multiple SSBs is greater than rsrp-ThresholdSSB).

[0256] When selecting CSI-RS, the channel state information reference signal received power (CSI-RSRP) of CSI-RS is compared with the parameter rsrp-ThresholdSSB. If the CSI-RSRP of a certain CSI-RS is greater than rsrp-ThresholdCSI-RS, then select the CSI-RS with CSI-RSRP greater than rsrp-ThresholdCSI-RS.

[0257] In some embodiments, taking the downlink signal as SSB and the uplink signal resource as RO as an example, if one SSB is mapped to at least one RO type, each RO type is associated with a preamble format, and different ROs can be associated with different preamble formats. The terminal can select the RO based on at least one of the following methods:

[0258] Location threshold information;

[0259] TA threshold;

[0260] Network-side indication.

[0261] The above information (ie, location threshold information, TA threshold, or network indication) can be configured through semi-static or dynamic signaling (such as SIB or RRC, etc.) of the network side device.

[0262] If SSB is mapped to at least one RO type, each RO type is associated with a preamble format, and different ROs can be associated with different preamble formats. An SSB selection method is as follows:

[0263] Step 1: The terminal first selects SSB set A that meets the rsrp-threshold;

[0264] Step 2: The terminal determines from SSB set A the associated SSB set B of the RO type containing a specific preamble format (the preamble format that the terminal expects to select);

[0265] Step 3: The terminal selects the RO associated with the SSB from set B for random access.

[0266] Therefore, in an embodiment of the present application, the terminal can determine the uplink signal resource corresponding to the downlink signal based on the resource type where the downlink signal is located, and the resource type where the uplink signal resource is located can support the duplex mode, thereby improving system resource utilization and reducing latency, and also improving uplink coverage.

[0267] The above, in combination with Figures 6 to 14, describes in detail the terminal side embodiment of the present application. The following, in combination with Figure 15, describes in detail the network side embodiment of the present application. It should be understood that the network side embodiment and the terminal side embodiment correspond to each other, and similar descriptions can refer to the terminal side embodiment.

[0268] FIG15 is a schematic flowchart of a method 300 for mapping downlink signals to uplink signal resources according to an embodiment of the present application. As shown in FIG15 , the method 300 for mapping downlink signals to uplink signal resources may include at least part of the following contents:

[0269] S310, the network side device sends configuration information to the terminal;

[0270] The configuration information is used to configure the time domain unit type of the uplink signal resource corresponding to the downlink signal to be determined based on the time domain unit type of the downlink signal;

[0271] The resource type of the uplink signal resource includes at least one of the following:

[0272] Uplink subband, uplink time unit.

[0273] It should be understood that Figure 15 shows the steps or operations of the method 300 for mapping downlink signals to uplink signal resources, but these steps are only examples. The embodiments of the present application can also perform other operations or variations of the various operations in Figure 15.

[0274] In some embodiments, the configuration information is sent via at least one of the following signaling:

[0275] System messages (such as SIB or MIB, etc.), RRC signaling, MAC CE, DCI.

[0276] In some embodiments, the correspondence between downlink signals and uplink signal resources includes at least one of the following:

[0277] The downlink signal on the downlink time unit is mapped to the uplink signal resource on the uplink time unit;

[0278] Mapping the downlink signal on the downlink time unit to the uplink signal resource on the uplink subband;

[0279] Mapping the downlink signal on the downlink time unit to the uplink signal resource on the uplink time unit and the uplink subband;

[0280] The downlink signal on the downlink subband is mapped to the uplink signal resource on the uplink time unit;

[0281] Mapping the downlink signal on the downlink subband to the uplink signal resource on the uplink subband;

[0282] The downlink signal on the downlink subband is mapped to the uplink signal resource on the uplink time unit and the uplink signal resource on the uplink subband.

[0283] In some embodiments, the correspondence between the downlink signal and the uplink signal resource is associated with at least one of the following:

[0284] Duplex configuration period;

[0285] Duplex mode period;

[0286] a mapping mode period, where the mapping mode period is a time period during which all types of the uplink signal resources are preconfigured and all the downlink signals are mapped at least once;

[0287] Uplink and downlink configuration;

[0288] A specific time unit, where the specific time unit is used for mapping the downlink signal to the uplink signal resource;

[0289] A mapping period of the downlink signal to the uplink signal resource;

[0290] An association period between the downlink signal and the uplink signal resource;

[0291] The association mode period of the downlink signal to the uplink signal resource.

[0292] In some embodiments, the correspondence between the downlink signal and the uplink signal resource is determined based on the uplink signal resource that is valid in at least one time domain resource;

[0293] The at least one time domain resource includes at least one of an uplink subband and an uplink time unit determined based on an uplink and downlink configuration or a duplex configuration period or a duplex mode period within the first time window;

[0294] The first time window is associated with one of the following: the mapping mode period, the specific time unit, the mapping period of the downlink signal to the uplink signal resource, the association period of the downlink signal to the uplink signal resource, and the association mode period of the downlink signal to the uplink signal resource.

[0295] In some embodiments, the effective uplink signal resources are different in different duplex mode periods.

[0296] In some embodiments, when the uplink signal resource located on the uplink subband and the uplink signal resource located on the uplink time unit are independently configured, the correspondence between the downlink signal and the uplink signal resource includes at least one of the following:

[0297] All pre-configured downlink signals are mapped to uplink signal resources located on uplink subbands and uplink signal resources located on uplink time units;

[0298] All pre-configured downlink signals are mapped to uplink signal resources located on the uplink subband;

[0299] All the pre-configured downlink signals are mapped to uplink signal resources located in the uplink time unit.

[0300] In some embodiments, when an uplink configuration includes the uplink signal resource located on an uplink subband and the uplink signal resource located on an uplink time unit, the correspondence between the downlink signal and the uplink signal resource includes:

[0301] The downlink signal is mapped to at least one of the uplink signal resource located on the uplink subband and the uplink signal resource located on the uplink time unit.

[0302] In some embodiments, the mapping of the downlink signal to the uplink signal resource at least includes: pre-configured mapping of all the downlink signals to all the uplink signal resources located in an uplink time unit.

[0303] In some embodiments, the downlink signal includes at least one of the following: a synchronization signal block SSB, a channel state information reference signal CSI-RS;

[0304] The uplink signal resource includes at least one of the following: a random access opportunity RO, a configuration authorized physical uplink shared channel CG-PUSCH resource, and a sounding reference signal SRS resource.

[0305] Therefore, in an embodiment of the present application, the terminal can determine the uplink signal resource corresponding to the downlink signal based on the resource type where the downlink signal is located, and the resource type where the uplink signal resource is located can support the duplex mode, thereby improving system resource utilization and reducing latency, and also improving uplink coverage.

[0306] The method for mapping a downlink signal to an uplink signal resource provided in an embodiment of the present application may be performed by a downlink signal to an uplink signal resource mapping apparatus, or a processing unit in the downlink signal to an uplink signal resource mapping apparatus for performing the method for mapping a downlink signal to an uplink signal resource. In the embodiment of the present application, the method for mapping a downlink signal to an uplink signal resource performed by the downlink signal to an uplink signal resource mapping apparatus is taken as an example to illustrate the device for mapping a downlink signal to an uplink signal resource provided in an embodiment of the present application.

[0307] FIG16 shows a schematic block diagram of a downlink signal to uplink signal resource mapping apparatus 400 according to an embodiment of the present application. As shown in FIG16 , the downlink signal to uplink signal resource mapping apparatus 400 includes:

[0308] The processing unit 410 is configured to determine an uplink signal resource corresponding to the downlink signal according to a resource type of the downlink signal;

[0309] The transceiver unit 420 is configured to send an uplink signal according to the uplink signal resource;

[0310] The resource type of the uplink signal resource includes at least one of the following:

[0311] Uplink subband, uplink time unit.

[0312] In some embodiments, the correspondence between the downlink signal and the uplink signal resource is associated with at least one of the following:

[0313] Duplex configuration period;

[0314] Duplex mode period;

[0315] a mapping mode period, the mapping mode period being a time during which all preconfigured downlink signals of all types of uplink signal resources are mapped at least once;

[0316] Uplink and downlink configuration;

[0317] A specific time unit, where the specific time unit is used for mapping the downlink signal to the uplink signal resource;

[0318] A mapping period of the downlink signal to the uplink signal resource;

[0319] An association period of the downlink signal to the uplink signal resource;

[0320] The association pattern period of the downlink signal to the uplink signal resource.

[0321] In some embodiments, the correspondence between the downlink signal and the uplink signal resource is determined based on the uplink signal resource that is valid in at least one time domain resource;

[0322] The at least one time domain resource includes at least one of an uplink subband and an uplink time unit determined based on an uplink and downlink configuration or a duplex configuration period or a duplex mode period within the first time window;

[0323] The first time window is associated with one of the following: the mapping mode period, the specific time unit, the mapping period of the downlink signal to the uplink signal resource, the association period of the downlink signal to the uplink signal resource, and the association mode period of the downlink signal to the uplink signal resource.

[0324] In some embodiments, the effective uplink signal resources are different in different duplex mode periods.

[0325] In some embodiments, when the uplink signal resource located on the uplink subband and the uplink signal resource located on the uplink time unit are independently configured, the correspondence between the downlink signal and the uplink signal resource includes at least one of the following:

[0326] Mapping all the pre-configured downlink signals to the uplink signal resources located on the uplink subband and the uplink signal resources located on the uplink time unit;

[0327] Mapping all the pre-configured downlink signals to the uplink signal resources located on the uplink subband;

[0328] All the pre-configured downlink signals are mapped to the uplink signal resources located in the uplink time unit.

[0329] In some embodiments, when an uplink configuration includes the uplink signal resource located on an uplink subband and the uplink signal resource located on an uplink time unit, the correspondence between the downlink signal and the uplink signal resource includes:

[0330] One of the downlink signals is mapped to at least one of the uplink signal resource located on an uplink subband and the uplink signal resource located on an uplink time unit.

[0331] In some embodiments, the correspondence between the downlink signal and the uplink signal resource includes at least: all pre-configured downlink signals are mapped to all uplink signal resources located in an uplink time unit.

[0332] In some embodiments, if there are at least two downlink signals whose signal qualities are greater than or equal to a first threshold, the processing unit 410 is further configured to select the downlink signal corresponding to the uplink signal resource it supports.

[0333] In some embodiments, before the downlink signal to uplink signal resource mapping device 400 determines the uplink signal resource corresponding to the downlink signal according to the resource type of the downlink signal, the transceiver unit 420 is further configured to receive configuration information from a network side device;

[0334] The configuration information is used to configure the time domain unit type where the uplink signal resource corresponding to the downlink signal is located to be determined based on the time domain unit type where the downlink signal is located.

[0335] In some embodiments, the correspondence between the downlink signal and the uplink signal resource includes at least one of the following:

[0336] Mapping the downlink signal on the downlink time unit to the uplink signal resource on the uplink time unit;

[0337] Mapping the downlink signal on the downlink time unit to the uplink signal resource on the uplink subband;

[0338] Mapping the downlink signal on the downlink time unit to the uplink signal resource on the uplink time unit and the uplink subband;

[0339] Mapping the downlink signal on the downlink subband to the uplink signal resource on the uplink time unit;

[0340] Mapping the downlink signal on the downlink subband to the uplink signal resource on the uplink subband;

[0341] The downlink signal on the downlink subband is mapped to the uplink signal resource on the uplink time unit and the uplink signal resource on the uplink subband.

[0342] In some embodiments, the downlink signal includes at least one of the following: a synchronization signal block SSB, a channel state information reference signal CSI-RS;

[0343] The uplink signal resources include at least one of the following: random access opportunities RO, configuration authorized physical uplink shared channel CG-PUSCH resources, and sounding reference signal SRS resources.

[0344] In some embodiments, the transceiver unit 420 may be a communication interface or transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit 410 may be embedded in or independent of a processor of the terminal in the form of hardware.

[0345] It should be understood that the downlink signal to uplink signal resource mapping device 400 according to the embodiment of the present application may correspond to the terminal in the method embodiment of the present application, and the various units in the downlink signal to uplink signal resource mapping device 400 are respectively for implementing the corresponding process of the terminal in the method 200 shown in Figure 6. For the sake of brevity, they will not be repeated here.

[0346] Therefore, in an embodiment of the present application, the terminal can determine the uplink signal resource corresponding to the downlink signal based on the resource type where the downlink signal is located, and the resource type where the uplink signal resource is located can support the duplex mode, thereby improving system resource utilization and reducing latency, and also improving uplink coverage.

[0347] FIG17 shows a schematic block diagram of a downlink signal to uplink signal resource mapping apparatus 500 according to an embodiment of the present application. As shown in FIG17 , the downlink signal to uplink signal resource mapping apparatus 500 includes:

[0348] The transceiver unit 510 is configured to send configuration information to the terminal;

[0349] The configuration information is used to configure the time domain unit type where the uplink signal resource corresponding to the downlink signal is located based on the time domain unit type where the downlink signal is located;

[0350] The resource type of the uplink signal resource includes at least one of the following:

[0351] Uplink subband, uplink time unit.

[0352] In some embodiments, the correspondence between the downlink signal and the uplink signal resource includes at least one of the following:

[0353] Mapping the downlink signal on the downlink time unit to the uplink signal resource on the uplink time unit;

[0354] Mapping the downlink signal on the downlink time unit to the uplink signal resource on the uplink subband;

[0355] Mapping the downlink signal on the downlink time unit to the uplink signal resource on the uplink time unit and the uplink subband;

[0356] Mapping the downlink signal on the downlink subband to the uplink signal resource on the uplink time unit;

[0357] Mapping the downlink signal on the downlink subband to the uplink signal resource on the uplink subband;

[0358] The downlink signal on the downlink subband is mapped to the uplink signal resource on the uplink time unit and the uplink signal resource on the uplink subband.

[0359] In some embodiments, the correspondence between the downlink signal and the uplink signal resource is associated with at least one of the following:

[0360] Duplex configuration period;

[0361] Duplex mode period;

[0362] a mapping mode period, the mapping mode period being a time during which all preconfigured downlink signals of all types of uplink signal resources are mapped at least once;

[0363] Uplink and downlink configuration;

[0364] A specific time unit, where the specific time unit is used for mapping the downlink signal to the uplink signal resource;

[0365] A mapping period of the downlink signal to the uplink signal resource;

[0366] An association period of the downlink signal to the uplink signal resource;

[0367] The association pattern period of the downlink signal to the uplink signal resource.

[0368] In some embodiments, the correspondence between the downlink signal and the uplink signal resource is determined based on the uplink signal resource that is valid in at least one time domain resource;

[0369] The at least one time domain resource includes at least one of an uplink subband and an uplink time unit determined based on an uplink and downlink configuration or a duplex configuration period or a duplex mode period within the first time window;

[0370] The first time window is associated with one of the following: the mapping mode period, the specific time unit, the mapping period of the downlink signal to the uplink signal resource, the association period of the downlink signal to the uplink signal resource, and the association mode period of the downlink signal to the uplink signal resource.

[0371] In some embodiments, the effective uplink signal resources are different in different duplex mode periods.

[0372] In some embodiments, when the uplink signal resource located on the uplink subband and the uplink signal resource located on the uplink time unit are independently configured, the correspondence between the downlink signal and the uplink signal resource includes at least one of the following:

[0373] Mapping all the pre-configured downlink signals to the uplink signal resources located on the uplink subband and the uplink signal resources located on the uplink time unit;

[0374] Mapping all the pre-configured downlink signals to the uplink signal resources located on the uplink subband;

[0375] All the pre-configured downlink signals are mapped to the uplink signal resources located in the uplink time unit.

[0376] In some embodiments, when an uplink configuration includes the uplink signal resource located on an uplink subband and the uplink signal resource located on an uplink time unit, the correspondence between the downlink signal and the uplink signal resource includes:

[0377] One of the downlink signals is mapped to at least one of the uplink signal resource located on an uplink subband and the uplink signal resource located on an uplink time unit.

[0378] In some embodiments, the correspondence between the downlink signal and the uplink signal resource includes at least: all pre-configured downlink signals are mapped to all uplink signal resources located in an uplink time unit.

[0379] In some embodiments, the downlink signal includes at least one of the following: a synchronization signal block SSB, a channel state information reference signal CSI-RS;

[0380] The uplink signal resources include at least one of the following: random access opportunities RO, configuration authorized physical uplink shared channel CG-PUSCH resources, and sounding reference signal SRS resources.

[0381] In some embodiments, the transceiver unit 510 may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip.

[0382] It should be understood that the downlink signal to uplink signal resource mapping device 500 according to the embodiment of the present application may correspond to the network side device in the method embodiment of the present application, and the various units in the downlink signal to uplink signal resource mapping device 500 are respectively for implementing the corresponding process of the network side device in the method 300 shown in Figure 15. For the sake of brevity, they will not be repeated here.

[0383] Therefore, in an embodiment of the present application, the terminal can determine the uplink signal resource corresponding to the downlink signal based on the resource type where the downlink signal is located, and the resource type where the uplink signal resource is located can support the duplex mode, thereby improving system resource utilization and reducing latency, and also improving uplink coverage.

[0384] The device for mapping downlink signals to uplink signal resources in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or a network-side device, or can be a device other than a terminal or a network-side device. For example, the terminal can include but is not limited to the types of the terminal 11 listed above, the network-side device can include but is not limited to the types of the network-side device 12 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0385] The mapping device for downlink signal to uplink signal resources provided in the embodiment of the present application can implement the various processes implemented in the method embodiment of Figure 6 or Figure 15 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0386] As shown in FIG18 , an embodiment of the present application further provides a communication device 600 , including a processor 601 and a memory 602 , wherein the memory 602 stores programs or instructions that can be run on the processor 601 .

[0387] For example, when the communication device 600 is a terminal, the program or instruction is executed by the processor 601 to implement the various steps executed by the terminal in the above-mentioned embodiment of the mapping method of downlink signal to uplink signal resources, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0388] For another example, when the communication device 600 is a network side device, when the program or instruction is executed by the processor 601, the various steps executed by the network side device in the above-mentioned embodiment of the mapping method of downlink signal to uplink signal resources are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0389] The present application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps performed by the terminal in the method embodiment shown in FIG6 . This terminal embodiment corresponds to the aforementioned terminal-side method embodiment, and each implementation process and implementation method of the aforementioned method embodiment can be applied to this terminal embodiment and achieve the same technical effects. Specifically, FIG19 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0390] The terminal 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709 and at least some of the components of the processor 710.

[0391] Those skilled in the art will appreciate that the terminal 700 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 710 through a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in Figure 19 does not constitute a limitation of the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be described in detail here.

[0392] It should be understood that in an embodiment of the present application, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042, and the graphics processor 7041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 707 includes a touch panel 7071 and at least one of other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include two parts: a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and an operating stick, which will not be repeated here.

[0393] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 701 may transmit the data to the processor 710 for processing. Furthermore, the RF unit 701 may send uplink data to the network-side device. Typically, the RF unit 701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0394] The memory 709 can be used to store software programs or instructions and various data. The memory 709 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 709 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct memory bus random access memory (DRRAM). The memory 709 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0395] Processor 710 may include at least one processing unit. Optionally, processor 710 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 710.

[0396] The processor 710 is configured to determine an uplink signal resource corresponding to the downlink signal according to a resource type of the downlink signal; the radio frequency unit 701 is configured to send an uplink signal according to the uplink signal resource;

[0397] The resource type of the uplink signal resource includes at least one of the following:

[0398] Uplink subband, uplink time unit.

[0399] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be described here.

[0400] The present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps performed by the network-side device in the method embodiment shown in FIG15 . This network-side device embodiment corresponds to the aforementioned network-side device method embodiment, and each implementation process and implementation method of the aforementioned method embodiment is applicable to this network-side device embodiment and can achieve the same technical effects. For the sake of brevity, they are not further described here.

[0401] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 20, the network-side device 800 includes an antenna 81, a radio frequency device 82, a baseband device 83, a processor 84, and a memory 85. Antenna 81 is connected to radio frequency device 82. In the uplink direction, radio frequency device 82 receives information via antenna 81 and sends the received information to baseband device 83 for processing. In the downlink direction, baseband device 83 processes the information to be transmitted and sends it to radio frequency device 82. Radio frequency device 82 processes the received information and then sends it through antenna 81.

[0402] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 83 , which includes a baseband processor.

[0403] The baseband device 83 may include, for example, at least one baseband board, on which at least two chips are arranged, as shown in Figure 20, one of the chips is, for example, a baseband processor, which is connected to the memory 85 through a bus interface to call the program in the memory 85 and execute the network side device operations shown in the above method embodiment.

[0404] The network side device may further include a network interface 86, which is, for example, a Common Public Radio Interface (CPRI).

[0405] Specifically, the network side device 800 of the embodiment of the present application also includes: instructions or programs stored in the memory 85 and can be run on the processor 84. The processor 84 calls the instructions or programs in the memory 85 to execute the method executed by each unit shown in Figure 17 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0406] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned embodiment of the method for mapping downlink signal to uplink signal resources is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0407] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0408] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned downlink signal to uplink signal resource mapping method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0409] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0410] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned downlink signal to uplink signal resource mapping method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0411] An embodiment of the present application also provides a communication system, including: a terminal and a network side device, wherein the terminal can be used to execute the steps performed by the terminal in the mapping method of downlink signals to uplink signal resources as described above, and the network side device can be used to execute the steps performed by the network side device in the mapping method of downlink signals to uplink signal resources as described above.

[0412] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0413] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0414] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A method for mapping downlink signal to uplink signal resources, wherein: include: The terminal determines, according to the resource type of the downlink signal, an uplink signal resource corresponding to the downlink signal; The terminal sends an uplink signal according to the uplink signal resource; The resource type of the uplink signal resource includes at least one of the following: Uplink subband, uplink time unit.

2. The method according to claim 1, wherein: The correspondence between the downlink signal and the uplink signal resource is associated with at least one of the following: Duplex configuration cycle; Duplex mode cycle; A mapping mode period, the mapping mode period being a time during which all types of the uplink signal resources are preconfigured and all the downlink signals are mapped at least once; Uplink and downlink configuration; A specific time unit, where the specific time unit is used for mapping the downlink signal to the uplink signal resource; A mapping period of the downlink signal to the uplink signal resource; An association period of the downlink signal to the uplink signal resource; The association pattern period of the downlink signal to the uplink signal resource.

3. The method according to claim 2, wherein: The correspondence between the downlink signal and the uplink signal resource is determined based on the uplink signal resource that is valid in at least one time domain resource; The at least one time domain resource includes at least one of an uplink subband and an uplink time unit determined based on an uplink and downlink configuration or a duplex configuration period or a duplex mode period in the first time window; The first time window is associated with one of the following: the mapping mode period, the specific time unit, the mapping period of the downlink signal to the uplink signal resource, the association period of the downlink signal to the uplink signal resource, and the association mode period of the downlink signal to the uplink signal resource.

4. The method according to claim 3, wherein: In different duplex mode periods, the effective uplink signal resources are different.

5. The method according to any one of claims 1 to 4, wherein: In the case where the uplink signal resource located on the uplink subband and the uplink signal resource located on the uplink time unit are independently configured, the correspondence relationship between the downlink signal and the uplink signal resource includes at least one of the following: All the pre-configured downlink signals are mapped to the uplink signal resources located on the uplink subband and the uplink signal resources located on the uplink time unit; Mapping all the pre-configured downlink signals to the uplink signal resources located on the uplink subband; All the pre-configured downlink signals are mapped to the uplink signal resources located in the uplink time unit.

6. The method according to any one of claims 1 to 4, wherein: In a case where an uplink configuration includes the uplink signal resource located on an uplink subband and the uplink signal resource located on an uplink time unit, the correspondence between the downlink signal and the uplink signal resource includes: One of the downlink signals is mapped to at least one of the uplink signal resource located on the uplink subband and the uplink signal resource located on the uplink time unit.

7. The method according to claim 6, wherein: The correspondence between the downlink signal and the uplink signal resource at least includes: all the pre-configured downlink signals are mapped to all the uplink signal resources located in the uplink time unit.

8. The method according to any one of claims 1 to 7, wherein: The method further comprises: If there are at least two downlink signals whose signal quality is greater than or equal to the first threshold, the terminal selects the downlink signal corresponding to the uplink signal resource supported by it.

9. The method according to any one of claims 1 to 8, wherein: Before the terminal determines, according to the resource type where the downlink signal is located, the uplink signal resource corresponding to the downlink signal, the method further includes: The terminal receives configuration information from a network side device; The configuration information is used to configure the time domain unit type where the uplink signal resource corresponding to the downlink signal is located to determine based on the time domain unit type where the downlink signal is located.

10. The method according to claim 9, wherein: The correspondence between the downlink signal and the uplink signal resource includes at least one of the following: Mapping the downlink signal on the downlink time unit to the uplink signal resource on the uplink time unit; Mapping the downlink signal on the downlink time unit to the uplink signal resource on the uplink subband; The downlink signal on the downlink time unit is mapped to the uplink signal resource on the uplink time unit and the uplink subband; Mapping the downlink signal on the downlink subband to the uplink signal resource on the uplink time unit; Mapping the downlink signal on the downlink subband to the uplink signal resource on the uplink subband; The downlink signal on the downlink subband is mapped to the uplink signal resource on the uplink time unit and the uplink signal resource on the uplink subband.

11. The method according to any one of claims 1 to 10, wherein: The downlink signal includes at least one of the following: a synchronization signal block SSB, a channel state information reference signal CSI-RS; The uplink signal resources include at least one of the following: random access opportunities RO, configuration authorized physical uplink shared channel CG-PUSCH resources, and sounding reference signal SRS resources.

12. A method for mapping downlink signal to uplink signal resources, wherein: include: The network side device sends configuration information to the terminal; The configuration information is used to configure the time domain unit type where the uplink signal resource corresponding to the downlink signal is located based on the time domain unit type where the downlink signal is located; The resource type of the uplink signal resource includes at least one of the following: Uplink subband, uplink time unit.

13. The method according to claim 12, wherein: The correspondence between the downlink signal and the uplink signal resource includes at least one of the following: Mapping the downlink signal on the downlink time unit to the uplink signal resource on the uplink time unit; Mapping the downlink signal on the downlink time unit to the uplink signal resource on the uplink subband; The downlink signal on the downlink time unit is mapped to the uplink signal resource on the uplink time unit and the uplink subband; Mapping the downlink signal on the downlink subband to the uplink signal resource on the uplink time unit; Mapping the downlink signal on the downlink subband to the uplink signal resource on the uplink subband; The downlink signal on the downlink subband is mapped to the uplink signal resource on the uplink time unit and the uplink signal resource on the uplink subband.

14. The method according to claim 12 or 13, wherein: The correspondence between the downlink signal and the uplink signal resource is associated with at least one of the following: Duplex configuration cycle; Duplex mode cycle; A mapping mode period, the mapping mode period being a time during which all types of the uplink signal resources are preconfigured and all the downlink signals are mapped at least once; Uplink and downlink configuration; A specific time unit, where the specific time unit is used for mapping the downlink signal to the uplink signal resource; A mapping period of the downlink signal to the uplink signal resource; An association period of the downlink signal to the uplink signal resource; The association pattern period of the downlink signal to the uplink signal resource.

15. The method according to claim 14, wherein: The correspondence between the downlink signal and the uplink signal resource is determined based on the uplink signal resource that is valid in at least one time domain resource; The at least one time domain resource includes at least one of an uplink subband and an uplink time unit determined based on an uplink and downlink configuration or a duplex configuration period or a duplex mode period in the first time window; The first time window is associated with one of the following: the mapping mode period, the specific time unit, the mapping period of the downlink signal to the uplink signal resource, the association period of the downlink signal to the uplink signal resource, and the association mode period of the downlink signal to the uplink signal resource.

16. The method according to claim 15, wherein: In different duplex mode periods, the effective uplink signal resources are different.

17. The method according to any one of claims 12 to 16, wherein: In the case where the uplink signal resource located on the uplink subband and the uplink signal resource located on the uplink time unit are independently configured, the correspondence relationship between the downlink signal and the uplink signal resource includes at least one of the following: All the pre-configured downlink signals are mapped to the uplink signal resources located on the uplink subband and the uplink signal resources located on the uplink time unit; Mapping all the pre-configured downlink signals to the uplink signal resources located on the uplink subband; All the pre-configured downlink signals are mapped to the uplink signal resources located in the uplink time unit.

18. The method according to any one of claims 12 to 16, wherein: In a case where an uplink configuration includes the uplink signal resource located on an uplink subband and the uplink signal resource located on an uplink time unit, the correspondence between the downlink signal and the uplink signal resource includes: One of the downlink signals is mapped to at least one of the uplink signal resource located on the uplink subband and the uplink signal resource located on the uplink time unit.

19. The method according to claim 18, wherein: The correspondence between the downlink signal and the uplink signal resource at least includes: all the pre-configured downlink signals are mapped to all the uplink signal resources located in the uplink time unit.

20. The method according to any one of claims 12 to 19, wherein: The downlink signal includes at least one of the following: a synchronization signal block SSB, a channel state information reference signal CSI-RS; The uplink signal resources include at least one of the following: random access opportunities RO, configuration authorized physical uplink shared channel CG-PUSCH resources, and sounding reference signal SRS resources.

21. A device for mapping downlink signals to uplink signal resources, wherein: include: A processing unit, configured to determine an uplink signal resource corresponding to the downlink signal according to a resource type of the downlink signal; a transceiver unit, configured to send an uplink signal according to the uplink signal resource; The resource type of the uplink signal resource includes at least one of the following: Uplink subband, uplink time unit.

22. The device according to claim 21, wherein The correspondence between the downlink signal and the uplink signal resource is associated with at least one of the following: Duplex configuration cycle; Duplex mode cycle; A mapping mode period, the mapping mode period being a time during which all types of the uplink signal resources are preconfigured and all the downlink signals are mapped at least once; Uplink and downlink configuration; A specific time unit, where the specific time unit is used for mapping the downlink signal to the uplink signal resource; A mapping period of the downlink signal to the uplink signal resource; An association period of the downlink signal to the uplink signal resource; The association pattern period of the downlink signal to the uplink signal resource.

23. The device according to claim 22, wherein: The correspondence between the downlink signal and the uplink signal resource is determined based on the uplink signal resource that is valid in at least one time domain resource; The at least one time domain resource includes at least one of an uplink subband and an uplink time unit determined based on an uplink and downlink configuration or a duplex configuration period or a duplex mode period in the first time window; The first time window is associated with one of the following: the mapping mode period, the specific time unit, the mapping period of the downlink signal to the uplink signal resource, the association period of the downlink signal to the uplink signal resource, and the association mode period of the downlink signal to the uplink signal resource.

24. The device according to any one of claims 21 to 23, wherein: If there are at least two downlink signals whose signal qualities are greater than or equal to the first threshold, the processing unit is further configured to select the downlink signal corresponding to the uplink signal resource supported by it.

25. The device according to any one of claims 21 to 24, wherein Before the mapping device of the downlink signal to the uplink signal resource determines the uplink signal resource corresponding to the downlink signal according to the resource type of the downlink signal, the transceiver unit is further used to receive configuration information from a network side device; The configuration information is used to configure the time domain unit type where the uplink signal resource to which the downlink signal is mapped is determined based on the time domain unit type where the downlink signal is located.

26. The device according to claim 25, wherein The correspondence between the downlink signal and the uplink signal resource includes at least one of the following: Mapping the downlink signal on the downlink time unit to the uplink signal resource on the uplink time unit; Mapping the downlink signal on the downlink time unit to the uplink signal resource on the uplink subband; The downlink signal on the downlink time unit is mapped to the uplink signal resource on the uplink time unit and the uplink subband; Mapping the downlink signal on the downlink subband to the uplink signal resource on the uplink time unit; Mapping the downlink signal on the downlink subband to the uplink signal resource on the uplink subband; The downlink signal on the downlink subband is mapped to the uplink signal resource on the uplink time unit and the uplink signal resource on the uplink subband.

27. A mapping device for downlink signal to uplink signal resources, wherein: include: A transceiver unit, used to send configuration information to the terminal; The configuration information is used to configure the time domain unit type where the uplink signal resource corresponding to the downlink signal is located based on the time domain unit type where the downlink signal is located; The resource type of the uplink signal resource includes at least one of the following: Uplink subband, uplink time unit.

28. The device according to claim 27, wherein The correspondence between the downlink signal and the uplink signal resource includes at least one of the following: Mapping the downlink signal on the downlink time unit to the uplink signal resource on the uplink time unit; Mapping the downlink signal on the downlink time unit to the uplink signal resource on the uplink subband; The downlink signal on the downlink time unit is mapped to the uplink signal resource on the uplink time unit and the uplink subband; Mapping the downlink signal on the downlink subband to the uplink signal resource on the uplink time unit; Mapping the downlink signal on the downlink subband to the uplink signal resource on the uplink subband; The downlink signal on the downlink subband is mapped to the uplink signal resource on the uplink time unit and the uplink signal resource on the uplink subband.

29. The device according to claim 27 or 28, wherein The correspondence between the downlink signal and the uplink signal resource is associated with at least one of the following: Duplex configuration cycle; Duplex mode cycle; A mapping mode period, the mapping mode period being a time during which all types of the uplink signal resources are preconfigured and all the downlink signals are mapped at least once; Uplink and downlink configuration; A specific time unit, where the specific time unit is used for mapping the downlink signal to the uplink signal resource; A mapping period of the downlink signal to the uplink signal resource; An association period of the downlink signal to the uplink signal resource; The association pattern period of the downlink signal to the uplink signal resource.

30. A terminal, wherein: It includes a transceiver, a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method for mapping downlink signal to uplink signal resources as described in any one of claims 1 to 11 are implemented.

31. A network side device, wherein: It includes a transceiver, a processor and a memory, the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method for mapping downlink signal to uplink signal resources as described in any one of claims 12 to 20 are implemented.

32. A readable storage medium, wherein: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, it implements the steps of the method for mapping a downlink signal to an uplink signal resource as described in any one of claims 1 to 11, or implements the steps of the method for mapping a downlink signal to an uplink signal resource as described in any one of claims 12 to 20.

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