Random access processing methods and apparatuses, terminal and network side device

Abstract

Disclosed in the present application are random access processing methods and apparatuses, a terminal and a network side device, belonging to the technical field of communications. A random access processing method in the embodiment of the present application comprises: a terminal receives a first random access channel configuration from a network side device; and on the basis of the first random access channel configuration, the terminal determines a random access channel resource in sub-band full-duplex (SBFD) symbols, the SBFD symbols comprising: a downlink symbol having an uplink sub-band.

Description

Random access processing method, device, terminal and network side equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202410388728.X filed on April 1, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a random access processing method, apparatus, terminal and network-side equipment. Background Art

[0004] In communication systems, time division duplex (TDD) configurations are primarily used for downlink services. For example, TDD's uplink and downlink configurations use dual-carrier frequency division duplexing subframes (DDDSU). This limits the time domain resources available for terminals to send preambles, which can easily cause conflicts between terminals and affect their channel access. Summary of the Invention

[0005] The embodiments of the present application provide a random access processing method, apparatus, terminal, and network-side equipment, which can solve the terminal channel access problem caused by insufficient random access resources.

[0006] In a first aspect, a random access processing method is provided, including:

[0007] The terminal receives a first random access channel configuration from a network-side device;

[0008] The terminal determines, according to the first random access channel configuration, resources of a random access channel in a sub-band full-duplex SBFD symbol;

[0009] The SBFD symbols include: downlink symbols with uplink sub-bands.

[0010] In a second aspect, a random access processing method is provided, including:

[0011] The network side device sends a first random access channel configuration to the terminal, where the first random access channel configuration is used to determine resources of a random access channel in a sub-band full-duplex (SBFD) symbol;

[0012] The SBFD symbols include: downlink symbols with uplink sub-bands.

[0013] According to a third aspect, a random access processing apparatus is provided, including:

[0014] A receiving module, configured to receive a first random access channel configuration from a network-side device;

[0015] A first determining module is configured to determine a resource of a random access channel in a sub-band full-duplex SBFD symbol according to the first random access channel configuration;

[0016] The SBFD symbols include: downlink symbols with uplink sub-bands.

[0017] In a fourth aspect, a random access processing apparatus is provided, including:

[0018] A second sending module, configured to send a first random access channel configuration to the terminal, where the first random access channel configuration is used to determine resources of a random access channel in a sub-band full-duplex SBFD symbol;

[0019] The SBFD symbols include: downlink symbols with uplink sub-bands.

[0020] In a fifth aspect, a terminal is provided, comprising 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.

[0021] In a sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is configured to receive a first random access channel configuration from a network-side device;

[0022] A processor, configured to determine, according to the first random access channel configuration, resources of a random access channel in a sub-band full-duplex SBFD symbol;

[0023] The SBFD symbols include: downlink symbols with uplink sub-bands.

[0024] In the seventh aspect, a network side device is provided, which includes 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.

[0025] In an eighth aspect, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is configured to send a first random access channel configuration to a terminal, where the first random access channel configuration is used to determine resources of a random access channel in a sub-band full-duplex (SBFD) symbol;

[0026] The SBFD symbols include: downlink symbols with uplink sub-bands.

[0027] 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.

[0028] In the tenth aspect, a wireless communication system is provided, comprising: 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.

[0029] 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.

[0030] In the twelfth aspect, a computer program / program product is provided, wherein the computer program / program product includes computer instructions, and the computer program / program product is executed by at least one processor to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0031] In an embodiment of the present application, a terminal receives a first random access channel configuration from a network-side device; the terminal determines random access channel resources in a sub-band full-duplex (SBFD) symbol based on the first random access channel configuration; wherein the SBFD symbol includes a downlink symbol having an uplink sub-band. In this embodiment of the present application, the terminal can utilize the uplink sub-band of the downlink symbol in the sub-band full-duplex symbol as a random access channel resource based on the first random access channel configuration, thereby increasing the available random access channel resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG1 is a block diagram of a wireless communication system to which embodiments of the present application may be applied;

[0033] Figures 2a to 2f are diagrams showing examples of time slot formats;

[0034] FIG3 is a schematic diagram of a random access processing method provided in an embodiment of the present application;

[0035] FIG4a to FIG4c are diagrams illustrating transmission scenarios of a random access processing method provided in an embodiment of the present application;

[0036] FIG5 is a diagram showing a comparison of protection intervals between a network-side device duplex mode and a terminal-side duplex mode;

[0037] FIG6 is a schematic diagram of another random access processing method provided in an embodiment of the present application;

[0038] FIG7 is a schematic structural diagram of a random access processing device provided in an embodiment of the present application;

[0039] FIG8 is a schematic structural diagram of another random access processing device provided in an embodiment of the present application;

[0040] FIG9 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0041] FIG10 is a schematic structural diagram of a terminal provided in an embodiment of the present application;

[0042] FIG11 is a schematic structural diagram of a network-side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] 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.

[0044] 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.

[0045] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application 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 illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0046] 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, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a 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. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) access point (Access Point, AP) or a wireless fidelity (Wireless Fidelity, WiFi) node, etc.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.

[0047] For ease of understanding, some of the contents involved in the embodiments of this application are described below:

[0048] 1. Selection of random access resources.

[0049] The random access procedure can be a contention-based random access channel (RACH) or a non-contention-based random access procedure. The random access procedure can be a four-step random access procedure (also called a Type-1 random access procedure) or a two-step random access procedure (also called a Type-2 random access procedure).

[0050] In the contention-based 4-step random access process, the terminal first sends Message 1 (Msg1) to the network device, which includes a preamble. After the network device detects the preamble, it sends Msg2 or a Random Access Response (RAR) message, which includes the number of the preamble detected by the network device and the uplink wireless resources allocated to the terminal for sending Msg3. After receiving Msg2, the terminal confirms that at least one of the preamble numbers carried in Msg2 is consistent with the number of the preamble it sent, and then sends Msg3 containing contention resolution information based on the resources indicated by the RAR. After receiving Msg3, the network device sends Msg4 containing contention resolution information. After receiving Msg4, the terminal confirms that the contention resolution information is consistent with the one it sent in Msg3, thus completing the 4-step random access.

[0051] The network-side device includes uplink grant (UL grant) information in the RAR to indicate the MSG3 physical uplink shared channel (PUSCH) scheduling information, and includes information such as the random access preamble ID (RACH preamble ID, RAPID), temporary cell radio network temporary identifier (TC-RNTI) and tracking area (TA). If the network-side device does not receive the MSG3 PUSCH, it can schedule the retransmission of the MSG3 PUSCH in the TC-RNTI-scrambled physical downlink control channel (PDCCH).

[0052] For the contention-based random access process, different terminals randomly select preambles for transmission. In this way, different user equipment (UE) may select the same preamble to send on the same time-frequency radio resources (Random Access Channel Occasion (RACH Occasion, RO) resources). This situation can be understood as a UE preamble conflict. In this case, different terminals 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-side device can only decode the PUSCH (including contention resolution information) sent by one UE on one MSG3PUSCH scheduling resource. Therefore, the network-side device will include the contention resolution information received in MSG3 in MSG4. If the contention resolution information in MSG4 received by the terminal matches the contention resolution information sent by the UE in MSG3PUSCH, the terminal considers that the contention resolution is successful. If they do not match, the contention resolution is considered unsuccessful.

[0053] In NR Rel-16, the two-step random access process (2-step RACH) was introduced. The first step is that the terminal sends MsgA to the network side device. After receiving MsgA, the network side device sends a MsgB message to the terminal. If the terminal does not receive MsgB within a certain period of time, the terminal will increment the counter that counts the number of times MsgA is sent and resend MsgA. If the counter that counts the number of times MsgA is sent reaches a certain threshold, the UE will switch from the 2-step random access process to the 4-step random access process. MsgA includes the MsgA preamble part and the MsgAPUSCH part. 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 sending of the MsgA preamble and the RO. MsgAPUSCH resources are a set of PUSCH resources configured relative to each PRACH slot, including time-frequency resources and demodulation reference signal (DMRS) resources.

[0054] 2. Selection of random access resources and mapping of synchronization signal blocks (SSBs) to random access channel opportunities (RACH Occasions, ROs).

[0055] In NR, a cell can configure multiple frequency division multiplexed (FDM) physical random access channel (PRACH) transmission opportunities (ROs) at a single PRACH transmission time location. A PRACH transmission opportunity is also called a PRACH Occasion (RO). At a given moment, the number of ROs that can be FDMed can be: 1, 2, 4, or 8. At a given moment, there are eight RO resources distributed across different frequencies.

[0056] The random access preamble can only be transmitted on the time domain resources (i.e., RO resources) configured by the parameter 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.

[0057] In NR, there is an association between the RO and the SSB actually sent. 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). Usually, the base station can use different beams to send different SSBs, and the corresponding terminal sends the Preamble on the RO associated with the SSB. In this way, the terminal selects the RO or "RO and preamble combination" associated with the SSB with a good signal based on the strength of the received downlink beam or SSB, and sends Msg1. In this way, the network side device can determine the SSB selected by the terminal based on the RO or "RO and preamble combination" of the received Preamble. And send Msg2 on the downlink beam corresponding to the SSB to ensure the reception quality of the downlink signal.

[0058] 3. Random access configuration.

[0059] For random access configuration, TDD and frequency-division duplex (FDD) use different configuration tables, where FDD is shown in Table 1 and TDD is shown in Table 2.

[0060] Table 1:

[0061] Table 2:

[0062] 4. PRACH time domain resource location.

[0063] 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 or time slot index, starting PRACH 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).

[0064] 5. Subbands non-overlapping Full duplex.

[0065] Sub-band non-overlapping full-duplex can improve transmission delay and enhance coverage.

[0066] For a downlink timeslot (configured by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated), the network side device configures the downlink (DL) bandwidth part (BWP) for the terminal. For an uplink timeslot, the network side device configures the uplink (UL) BWP for the terminal. For example, timeslots 1 and 4.

[0067] For a full duplex scenario, as shown in FIG2a , there are the following situations.

[0068] Case 1: DL BWP is configured, that is, slot 1.

[0069] Case 2: Configure DL BWP and uplink sub-band (UL sub-band), that is, slot 2.

[0070] For one uplink timeslot (configured by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated).

[0071] For the full duplex scenario, as shown in Figure 2b, there are the following situations.

[0072] Case 3: UL BWP is configured, that is, slot 3.

[0073] Case 4: Configure UL BWP and downlink sub-band (DL sub-band), that is, slot 4.

[0074] For subband full-duplex (SBFD) operation, one SBFD subband consists of one resource block (RB) or a set of consecutive RBs with the same transmission direction.

[0075] A time unit (eg, slot or symbol) in which the base station operates using SBFD may be referred to as a SBFD time unit (eg, slot or symbol).

[0076] For Rel-15, the base station and the terminal can only send or receive at a time, as shown in Figure 2c.

[0077] For Rel-18 base station side full-duplex, the base station can send and receive at the same time, while the terminal side can only use half-duplex mode, that is, it can only send or receive at a time, as shown in Figure 2d.

[0078] For full-duplex on the terminal side, the base station and the terminal can transmit and receive at the same time, as shown in Figure 2e.

[0079] For full-duplex at the terminal side, a larger guard band (GB) may be required to suppress self-interference. The GB of the full-duplex at the terminal is larger than the GB of the full-duplex at the base station, as specifically shown in FIG2f .

[0080] For a communication device, simultaneous UL reception and DL transmission 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 receiving and transmitting bands. However, this reduces terminal throughput.

[0081] In the above-mentioned Figures 2a to 2f, DL represents downlink, UL represents uplink, GNB FD represents base station full-duplex, UE FD represents terminal full-duplex, and GB represents guard band.

[0082] The random access processing method provided by the embodiment of the present application is described in detail below with reference to some embodiments and application scenarios with reference to the accompanying drawings.

[0083] 3 , an embodiment of the present application provides a random access processing method. As shown in FIG3 , the random access processing method includes:

[0084] Step 301: The terminal receives a first random access channel configuration from a network-side device.

[0085] Step 302: The terminal determines a random access channel resource in a sub-band full-duplex SBFD symbol according to the first random access channel configuration;

[0086] The SBFD symbol includes: a downlink symbol having an uplink subband. Optionally, the SBFD symbol further includes: at least one of an uplink symbol and a flexible symbol, wherein the uplink symbol may include an uplink subband or a downlink subband.

[0087] In an embodiment of the present application, after receiving the above-mentioned first random access channel configuration, the terminal can use the uplink subband of the downlink symbol and the uplink subband of the uplink symbol in the sub-band full-duplex symbol as resources of the random access channel to transmit the random access channel, thereby increasing the available resources of the random access channel.

[0088] Optionally, the first random access channel configuration may be understood as a random access channel configuration for a terminal supporting sub-band full-duplex capability, or may be understood as a RACH configuration configured by a network-side device for a terminal supporting SBFD capability.

[0089] In an embodiment of the present application, a terminal receives a first random access channel configuration from a network-side device; the terminal determines random access channel resources in a sub-band full-duplex (SBFD) symbol based on the first random access channel configuration; wherein the SBFD symbol includes a downlink symbol having an uplink sub-band. In this embodiment of the present application, the terminal can utilize the uplink sub-band of the downlink symbol in the sub-band full-duplex symbol as a random access channel resource based on the first random access channel configuration, thereby increasing the available random access channel resources.

[0090] Optionally, in some embodiments, the time domain configuration information in the first random access channel configuration is related to target information, and the target information includes at least one of the following:

[0091] Synchronization signal block SSB;

[0092] Information indicating whether the random access channel spans two symbol types, the symbol types including sub-band full-duplex symbols and non-sub-band full-duplex symbols;

[0093] The time domain period of the random access channel;

[0094] A distribution state of a random access channel within a radio frame, wherein the distribution state includes uniform distribution, equal interval distribution, or non-equal interval distribution;

[0095] The number of subframes occupied by the random access channel in a radio frame.

[0096] In the embodiment of the present application, the time domain configuration information in the first random access channel configuration is related to the target information, which can be understood as considering the above target information when designing the first random access channel configuration.

[0097] For example, in some embodiments, considering the overlap with the SSB, such as whether the time domain resources of the first random access channel overlap or do not overlap with the time domain resources of the SSB, the first random access channel is configured at a resource location that overlaps or does not overlap with the time domain resources of the SSB. This can increase the time and frequency resources of the random access channel, improve the capacity of random access, and reduce latency. However, the overlap of the RACH channel with the SSB time domain may increase cross-link interference or self-interference to other UEs, causing interference to the reception of downlink signals or channels.

[0098] For example, in some embodiments, consideration may be given to whether the random access channel spans two symbol types. If the random access channel can span two symbol types, the random access channel can be transmitted on sub-band full-duplex symbols, non-sub-band full-duplex symbols, or on spanning sub-band full-duplex symbols and non-sub-band full-duplex symbols. This improves the flexibility of RACH channel configuration and allows for the flexible addition of random access channel time-frequency resources based on actual configuration, thereby increasing random access capacity, coverage, and reducing latency.

[0099] For example, in some embodiments, the time domain period of the random access channel may be considered and a corresponding time domain period may be set based on actual conditions such as the number of served UEs to ensure efficient use of random access channel resources.

[0100] Optionally, the aforementioned distribution state can be understood as the distribution state of the subframes containing the random access channel within a radio frame. In some embodiments, the distribution state of the random access channel within a radio frame can be considered so that an appropriate number of random access channel resource locations can be set based on actual conditions to ensure flexibility in random access configuration. In other words, evenly distributing RACH resources within a radio frame facilitates the continuity of other UL scheduling resources.

[0101] Optionally, in some embodiments, the random access channel satisfies any one of the following:

[0102] Overlapping with the SSB time domain;

[0103] It does not overlap with the SSB time domain.

[0104] In the embodiment of the present application, the random access channel overlapping with the SSB time domain can be understood as: configuring the time domain resources of the random access channel at the resource position overlapping with the SSB time domain. The random access channel not overlapping with the SSB time domain can be understood as: configuring the time domain resources of the random access channel at the resource position not overlapping with the SSB time domain.

[0105] Optionally, in some embodiments, the random access channel satisfies any one of the following:

[0106] The random access channel does not span two symbol types;

[0107] The random access channel spans two symbol types.

[0108] In this embodiment of the present application, when the random access channel does not span two symbol types, each time domain resource configured for the random access channel in the time domain configuration information occupies one symbol type. When the random access channel spans two symbol types, each time domain resource configured for the random access channel in the time domain configuration information occupies both a sub-band full-duplex symbol and a non-sub-band full-duplex symbol.

[0109] Optionally, in some embodiments, the random access channel satisfies any one of the following:

[0110] The time domain period of the random access channel is an even-numbered radio frame;

[0111] The time domain period of the random access channel is an odd-numbered radio frame;

[0112] The duration of the time domain period of the random access channel is N radio frames, where N is a positive integer.

[0113] Optionally, in some embodiments, the random access channel satisfies any one of the following:

[0114] The subframes where the random access channel is located are evenly distributed in a radio frame;

[0115] The subframes where the random access channel is located are equally spaced in a radio frame;

[0116] The subframes where the random access channels are located are distributed at non-uniform intervals in a radio frame.

[0117] Optionally, in some embodiments, the method further comprises:

[0118] In a case where the random access channel spans two symbol types, the terminal determines a transmission parameter of the random access channel according to any one of the following:

[0119] the first random access channel configuration;

[0120] A starting symbol of the random access channel;

[0121] an end symbol of the random access channel;

[0122] Target indication information sent by a network-side device, where the target indication information is used to indicate a symbol type associated with the random access channel;

[0123] The proportion of different symbol types in the random access channel.

[0124] In this embodiment of the present application, when the random access channel spans two symbol types, the transmission parameters of the random access channel may be parameters corresponding to sub-band full-duplex symbols or parameters corresponding to non-sub-band full-duplex symbols. Optionally, the transmission parameters may include parameters such as transmission power.

[0125] Optionally, in some embodiments, the transmission parameters used by the random access channel may be indicated in the first random access channel configuration, so that the transmission parameters used by the random access channel may be determined according to the indication in the first random access channel configuration.

[0126] Optionally, in some embodiments, the transmission parameters of the random access channel can be determined based on the starting symbol of the random access channel. For example, if the starting symbol of the random access channel is located in a sub-band full-duplex symbol, the parameters corresponding to the sub-band full-duplex symbol are used; or, if the starting symbol of the random access channel is located in a non-sub-band full-duplex symbol, the parameters corresponding to the non-sub-band full-duplex symbol are used.

[0127] Optionally, in some embodiments, the transmission parameters of the random access channel can be determined based on the end symbol of the random access channel. For example, if the end symbol of the random access channel is located in a sub-band full-duplex symbol, the parameters corresponding to the sub-band full-duplex symbol are used; or, if the end symbol of the random access channel is located in a non-sub-band full-duplex symbol, the parameters corresponding to the non-sub-band full-duplex symbol are used.

[0128] Optionally, in some embodiments, the transmission parameters of the random access channel can be determined based on the target indication information sent by the network side device. For example, the network side device sends target indication information in advance to indicate that the symbol type associated with the random access channel is a sub-band full-duplex symbol, then the transmission parameters of the random access channel use the parameters corresponding to the sub-band full-duplex symbol; or, the network side device sends target indication information in advance to indicate that the symbol type associated with the random access channel is a non-sub-band full-duplex symbol, then the transmission parameters of the random access channel use the parameters corresponding to the non-sub-band full-duplex symbol.

[0129] Optionally, in some embodiments, the transmission parameters of the random access channel may be determined based on the proportion of different symbol types in the random access channel. For example, if the number of sub-band full-duplex symbols occupied by the random access channel is greater than the number of non-sub-band full-duplex symbols occupied by the random access channel, the transmission parameters of the random access channel use the parameters corresponding to the sub-band full-duplex symbols; otherwise, the transmission parameters of the random access channel use the parameters corresponding to the non-sub-band full-duplex symbols.

[0130] Optionally, in some embodiments, the preamble corresponding to the random access channel satisfies at least one of the following:

[0131] When a reference signal received power of a reference signal received by the terminal is greater than or equal to a first preset value, the preamble code corresponding to the random access channel is a preamble code in a first preamble code set;

[0132] When the reference signal received power of the reference signal received by the terminal is greater than or equal to the second preset value and less than the first preset value, the preamble code corresponding to the random access channel is a preamble code in the second preamble code set;

[0133] When the reference signal received power of the reference signal received by the terminal is greater than or equal to a third preset value and less than a second preset value, the preamble code corresponding to the random access channel is a preamble code in a third preamble code set;

[0134] Among them, the first preamble code set is a preamble code set that does not perform preamble code retransmission; the second preamble code set is a preamble code set that uses sub-band full-duplex symbols to perform preamble code retransmission; the third preamble code set is a preamble code set that uses non-sub-band full-duplex symbols to perform preamble code retransmission.

[0135] In an embodiment of the present application, the first preamble set, the second preamble set, and the third preamble set may be associated with different RACH configurations, and the first preamble set, the second preamble set, and the third preamble set may be associated with different available time domain resources, such as available time slots. That is, if a UE selects preambles of different preamble sets, the available time slot definitions may be different, and the time domain resources for subsequent uplink transmissions associated with the preamble set may be based on different time domain resource definitions, such as Msg 3PUSCH and MSG A transmissions. A terminal supporting sub-band full-duplex capability may be configured with the first preamble set, the second preamble set, and the third preamble set at the same time.

[0136] If at least one of the symbols indicated by the Time Domain Resource Allocation (TDRA) of the PUSCH in a slot overlaps with a symbol not intended for UL transmission, then the slot is determined to be an unavailable slot. Otherwise, it is an available slot.

[0137] Optionally, the network-side device may configure a reference signal received power threshold (i.e., the first preset value, the second preset value, and the third preset value) of the reference signal, with different threshold values ​​associated with different preamble sets. The terminal may determine a preamble set based on the reference signal (e.g., SSB) received strength and the threshold configured by the network-side device, and determine an available time slot for repeated transmission of the Msg3PUSCH based on different preamble sets.

[0138] If the RSRP of the reference signal received by the terminal is greater than or equal to a first preset value, a first preamble set (eg, a legacy RACH configuration) is used to initiate random access, and Msg3 PUSCH retransmission is not performed.

[0139] If the RSRP of the reference signal is greater than or equal to the second preset value and less than the first preset value, the terminal uses the second preamble code set (for example, the RACH configuration that supports the SBFD UE configuration). At this time, the UL subband resources can be used for the repeated transmission of Msg3PUSCH, that is, the UL subband is an available time domain resource, such as a slot. The repeated transmission of Msg3PUSCH can use the SBFD UL subband for K repeated transmissions indicated by the network side device. At this time, the UL subband is regarded as an available time domain resource.

[0140] If the RSRP of the reference signal is greater than or equal to the third preset value and less than the second preset value, the terminal uses the third preamble set and may not use SBFD resources for repeated transmission of Msg3PUSCH, that is, the available slot for repeated transmission of Msg3PUSCH is determined based on semi-static parameters. The semi-static parameters include tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated configuration, SSB-PositionsInBurst, and TDRA information field value. In this case, the available resources do not include UL subband resources, and UL subbands are not available time domain resources.

[0141] Optionally, the network-side device may indicate whether the UL subband is an available time domain resource (eg, slot) for Msg3 PUSCH transmission through system information block (SIB) information, semi-static signaling, or dynamic signaling.

[0142] Optionally, the network-side device may configure a predefined rule for the UE to select the RO configuration.

[0143] For example, the UE preferentially selects the first random access channel configuration and then selects the second random access channel configuration.

[0144] The first random access channel configuration is a RACH configuration configured by the network side device for the terminal supporting the SBFD capability.

[0145] The second random access channel configuration is a RACH configuration configured by the network side device for a terminal that does not support the SBFD capability.

[0146] Optionally, in some embodiments, the method further includes: if part of the RO in the first random access channel configuration falls on non-SBFD symbols, such as UL symbols or flexible symbols, then the UE can use the transmission parameters of the second random access channel configuration, such as power parameters, to perform PRACH transmission.

[0147] Optionally, in some embodiments, the method further comprises:

[0148] When a preset condition is met, the terminal switches to using a second random access channel to configure a transmission random access channel;

[0149] The second random access channel configuration is a random access channel configuration for a terminal that does not support sub-band full-duplex capability, and the preset condition includes at least one of the following:

[0150] When the power of the terminal reaches the maximum power configured for the first random access channel, retransmission of the random access channel is still triggered;

[0151] The number of retransmissions of the random access channel reaches a maximum number of transmissions associated with the first random access channel configuration.

[0152] In the embodiment of the present application, if the terminal chooses to use the first random access channel configuration to transmit the random channel, then when the above preset conditions are met, the terminal can switch to the second random access channel configuration to initiate random access.

[0153] Optionally, in some embodiments, the network side device may configure or predetermine whether to increase the power when switching the random access channel configuration or not to increase the power when switching the random access channel configuration.

[0154] Optionally, the second random access channel configuration can also be understood as a configuration for a terminal with legacy capabilities. A terminal supporting sub-band full-duplex capability can be configured with both the first random access channel configuration and the second random access channel configuration.

[0155] In the embodiment of the present application, the random access channel configuration (such as the first random access channel configuration and the second random access channel configuration) can be referred to as a random access channel opportunity configuration, referred to as RO configuration.

[0156] Optionally, in some embodiments, for a random access channel configuration, if it includes RO of SBFD symbols and RO of non-SBFD symbols, the network side device may indicate whether the RO of non-SBFD symbols is valid through semi-static signaling or dynamic signaling.

[0157] Optionally, if Msg2 or Msg4 fails, retransmission of Msg1 will be triggered. In some embodiments, the maximum number of transmissions is the maximum number of preamble retransmissions for the same symbol type.

[0158] In an embodiment of the present application, the above-mentioned maximum number of retransmissions can be a maximum number of retransmissions specifically used to determine the random access channel configuration selection switching, or the maximum number of retransmissions can be associated with a function of the maximum number of retransmissions for declaring a radio link failure (Radio Link Failure, RLF).

[0159] Optionally, in some embodiments, the maximum number of transmissions may be configured or predetermined by a network-side device. The maximum number of transmissions may be determined based on a maximum number of retransmissions allowed by the terminal. In some embodiments, the maximum number of retransmissions used to determine whether to use a symbol type for preamble transmission may not be configured. The terminal may determine a value based on the maximum number of retransmissions allowed by the terminal and then determine whether to switch the symbol type used for preamble transmission based on the value.

[0160] In order to better understand the present application, some examples are provided below for illustration.

[0161] In the first embodiment, a typical configuration, the RACH time domain resource configuration design may take into account the subcarrier spacing, TDD configuration, SSB period, etc.

[0162] RACH can be located in even or odd radio frames, or every radio frame, with one radio frame configured every 4, 8, or 16 radio frames. This radio frame can have one or more subframes used for RACH transmission. For example, every odd radio frame has one preamble subframe, which is 7, as shown in Figure 4a.

[0163] RACH can be configured in an SBFD slot or a non-SBFD slot (such as a UL slot), as shown in Figure 4b. Alternatively, it can span SBFD symbols and non-SBFD symbols, as shown in Figure 4c.

[0164] Optionally, a RACH configuration generally includes the following parameters: RACH configuration index; preamble format; x; y; subframe number; start symbol; number of RACH time slots in a subframe; number of time domain RACH times in a RACH time slot; RACH duration.

[0165] The preamble format (Preamble Format) may be 0 to 3, indicating Preamble Format 0 to 3, or may be other formats, such as Preamble Format A1-A3, Preamble Format B1-B4, Preamble Format C0, and Preamble Format C2.

[0166] The candidate values ​​for x and y are: {16,1}, {8,1}, {4,1}, {2,1}, {2,0}, {16,1}, {1,0}.

[0167] The subframe number can be determined according to different design principles. For example,

[0168] For a value, it can be one of 0, 1, 2, 3, 5, 6, 7, 8;

[0169] For two values, it can be one of {0,1},{0,2}{0,3}…{2,3}{4,5}{6,7}{8,9};

[0170] For three values, it can be one of {0,1,2}{1,4,7},{3,6,9},{2,5,8}…{7,8,9};

[0171] For five values ​​it can be {0,2,4,6,8};

[0172] For ten values, it can be {0~9}.

[0173] Alternatively, x, y and subframe numbers may be considered jointly.

[0174] The number of starting symbols can be 0 or 7.

[0175] Optionally, for Preamble Format 0-3, the RACH duration may be 0.

[0176] When configuring, you can consider the valid combination of the above parameters.

[0177] In the second embodiment, RACH is in odd radio frames, and RACH does not overlap with SSB.

[0178] For example, consider 30 kHz, a typical TDD configuration, DDDSU, and PRACH format 0.

[0179] The typical SSB configuration period is 20ms. The SSB is located in the first half of the first radio frame of each cycle. Therefore, the preamble time domain configuration in odd radio frames does not need to consider overlap with the SSB. Each odd radio frame has one subframe with RACH, which can be one of 0, 1, 2, 3, 5, 6, 7, or 8. The subframe structure is shown in Table 3.

[0180] Table 3:

[0181] The first line is the subframe number, and the second line is the 30kHz time slot number.

[0182] For example, the RACH configuration (ie, the first random access channel configuration described above) includes the following case 1 and case 2.

[0183] Case 1: No restrictions, for example, cross-symbol types are possible. This includes the following cases:

[0184] Case 1-1 RACH is in one subframe, or across subframes (i.e., in the first half of the subframe and the next half of the subframe). An example of RACH configuration is shown in Table 4.

[0185] Table 4:

[0186] Among them, n SFN modx=y is a calculation formula for determining in which radio frame the RACH appears, and can also be understood as a calculation formula for determining the period of a radio frame, where x and y are specific parameters.

[0187] In case 1-2, RACH is evenly distributed in two subframes in a radio frame (with an interval of 5 time slots). An example of RACH configuration is shown in Table 5.

[0188] Table 5:

[0189] In cases 1-3, RACH is unevenly distributed in two subframes in a radio frame (the interval is not 5). An example of RACH configuration is shown in Table 6.

[0190] Table 6:

[0191] In cases 1-4, RACH is distributed in three subframes at equal intervals in a radio frame (the number of subframes between any two RACH channels is the same). An example of RACH configuration is shown in Table 7.

[0192] Table 7:

[0193] In cases 1-5, RACH is distributed in three subframes at unequal intervals in a radio frame. An example of RACH configuration is shown in Table 8.

[0194] Table 8:

[0195] In cases 1-6, RACH is distributed equally in four subframes in a radio frame. An example of RACH configuration is shown in Table 9.

[0196] Table 9:

[0197] In cases 1-7, RACH is distributed in four subframes at unequal intervals in a radio frame. An example of RACH configuration is shown in Table 10.

[0198] Table 10:

[0199] In case 1-8, RACH is in five subframes. An example of RACH configuration is shown in Table 11.

[0200] Table 11:

[0201] In case 1-8, RACH is in five subframes. An example of RACH configuration is shown in Table 12.

[0202] Table 12:

[0203] In one example, RACH transmission is performed in subframe 1, that is, RACH resources are configured on D and S of subframe 1, as shown in Table 13.

[0204] Table 13:

[0205] In one example, RACH transmission is performed in subframe 7, that is, RACH resources are configured on U and D of subframe 7, as shown in Table 14.

[0206] Table 14:

[0207] Case 2: RACH does not overlap with uplink symbols. This includes the following cases:

[0208] In case 2-1, RACH is in one subframe. An example of RACH configuration is shown in Table 15.

[0209] Table 15:

[0210] In case 2-2, RACH is unevenly distributed in two subframes in a radio frame (the interval is not 5 slots). An example of RACH configuration is shown in Table 16.

[0211] Table 16:

[0212] In case 2-3, RACH is evenly spaced in three subframes in a radio frame. An example of RACH configuration is shown in Table 17.

[0213] Table 17:

[0214] In case 2-4, RACH is distributed in four subframes at unequal intervals in a radio frame. An example of RACH configuration is shown in Table 18.

[0215] Table 18:

[0216] Optionally, in an example, assuming that RACH is in three subframes (such as 1, 4 and 7) and is evenly distributed in a radio frame, an example of RACH and Uplink symbol overlap is shown in Table 19 below.

[0217] Table 19:

[0218] Example 3: Consider 30 kHz, a typical TDD configuration DDDSU.

[0219] The typical SSB configuration period is 20ms, and the SSB is located in the first half of the first radio frame of each period. Therefore, the RACH time domain configuration in the even radio frame needs to consider the overlap with the SSB. When overlapping, it may cause cross-link interference (CLI) to the terminal receiving the SSB.

[0220] For a 30 kHz subcarrier spacing, SSBs may be placed in slots 0-3, including cases 3 and 4 below.

[0221] Case 3: RACH does not overlap with SSB, including the following cases:

[0222] In case 3-1, RACH is in one subframe. An example of RACH configuration is shown in Table 20.

[0223] Table 20:

[0224] In case 3-2, RACH is evenly spaced across three subframes in a radio frame. An example of RACH configuration is shown in Table 21.

[0225] Table 21:

[0226] In case 3-3, RACH is evenly spaced across three subframes in a radio frame. An example of RACH configuration is shown in Table 22.

[0227] Table 22:

[0228] In case 3-4, RACH is distributed in three subframes at unequal intervals in a radio frame. An example of RACH configuration is shown in Table 23.

[0229] Table 23:

[0230] In case 3-5, RACH is distributed equally in four subframes in a radio frame. An example of RACH configuration is shown in Table 24.

[0231] Table 24:

[0232] In case 3-6, RACH is distributed in four subframes at unequal intervals in a radio frame. An example of RACH configuration is shown in Table 25.

[0233] Table 25:

[0234] In case 3-7, RACH is in five subframes. An example of RACH configuration is shown in Table 26.

[0235] Table 26:

[0236] Case 4: RACH does not overlap with uplink symbols.

[0237] Embodiment 4: RACH is transmitted in each radio frame. For details, refer to the designs of Case 1, Case 2, and Case 3 above.

[0238] For example, in case 4-1, RACH is in 1 subframe, and an example of RACH configuration is shown in Table 27.

[0239] Table 27:

[0240] In case 4-2, RACH is evenly distributed in two subframes in one radio frame (with an interval of 5 time slots). An example of RACH configuration is shown in Table 28.

[0241] Table 28:

[0242] In case 4-3, RACH is unevenly distributed in two subframes in a radio frame. An example of RACH configuration is shown in Table 29.

[0243] Table 29:

[0244] In case 4-4, RACH is evenly spaced across three subframes in a radio frame. An example of RACH configuration is shown in Table 30.

[0245] Table 30:

[0246] In case 4-5, RACH is distributed in three subframes at unequal intervals in a radio frame. An example of RACH configuration is shown in Table 31.

[0247] Table 31:

[0248] In cases 4-6, RACH is distributed equally in four subframes in a radio frame. An example of RACH configuration is shown in Table 32.

[0249] Table 32:

[0250] In case 4-7, RACH is distributed in four subframes at unequal intervals in a radio frame. An example of RACH configuration is shown in Table 33.

[0251] Table 33:

[0252] In case 4-8, RACH is in five subframes. An example of RACH configuration is shown in Table 34.

[0253] Table 34:

[0254] In case 4-9, RACH is in ten subframes. An example of RACH configuration is shown in Table 35.

[0255] Table 35:

[0256] For each embodiment of this application, the full-duplex mode is defined as follows. The full-duplex mode may include the following two types:

[0257] Full-duplex mode of network-side equipment (i.e., base station full-duplex mode): Network-side equipment uses full-duplex, and terminal-side equipment uses half-duplex.

[0258] Terminal full-duplex mode: Full-duplex is used on both the network and the terminal.

[0259] Applying half-duplex on the terminal side means that only DL signals or channels can be received or UL signals or channels can be sent in one time unit.

[0260] Applying full-duplex on the terminal side means: simultaneously receiving DL and sending UL signals or channels in one time unit.

[0261] Full-duplex mode on network devices can enhance coverage, reduce transmission delays, and improve resource utilization. Full-duplex mode on terminals can achieve these gains while also improving DL (UL) throughput.

[0262] Typically, a guard band is reserved between UL and DL transmissions, for example, to achieve frequency isolation and reduce self-interference. The UE's self-interference mitigation capability is typically weaker than that of the gNB. For simultaneous transmission and reception on the UE side, a larger number of GBs must be reserved than on the gNB side, meaning more PRBs must be reserved as guard bands. This is shown in Figure 5.

[0263] The terms enhanced duplex, enhanced duplex mode, cross division duplex (XDD), enhanced full duplex, and enhanced full duplex mode used in this application may represent the same concept, which may be expressed as supporting uplink subbands within downlink time units, supporting downlink subbands on uplink time units, or supporting both uplink and downlink subbands on flexible time units.

[0264] Enhanced duplex can include full duplex on network devices and terminals. It can also be called sub-band full duplex.

[0265] Optionally, the network side device notifies the enhanced duplex mode (pattern) in SIB1 or the Master Information Block (MIB), including at least one of the following: enhanced duplex configuration period, enhanced duplex mode period, UL-DL common configuration (config common).

[0266] In the embodiment of the present application, SSB to RO mapping may also refer to the association between downlink signals and uplink signals or resources in a general sense, such as the relationship between CSI-RS and RO.

[0267] RO refers to the time-frequency resources required to transmit a RACH sequence. Random access (RA) refers to the random access procedure. SSB can refer to any module containing at least part of a synchronization signal, broadcast signal, or other downlink broadcast signal. RACH resources can be RACH time-frequency resources or RACH sequences.

[0268] It should be understood that the solution of the present application can also be used in other TDD configurations, such as configurations with different subcarrier spacings and full-duplex scenarios, which will not be described in detail here.

[0269] 6 , an embodiment of the present application further provides a random access processing method. As shown in FIG6 , the random access processing method includes:

[0270] Step 601: A network-side device sends a first random access channel configuration to a terminal, where the first random access channel configuration is used to determine resources of a random access channel in a sub-band full-duplex (SBFD) symbol.

[0271] The SBFD symbols include: downlink symbols with uplink sub-bands.

[0272] Optionally, the time domain configuration information in the first random access channel configuration is related to target information, and the target information includes at least one of the following:

[0273] Synchronization signal block SSB;

[0274] Information indicating whether the random access channel spans two symbol types, the symbol types including sub-band full-duplex symbols and non-sub-band full-duplex symbols;

[0275] The time domain period of the random access channel;

[0276] A distribution state of a random access channel within a radio frame, wherein the distribution state includes uniform distribution, equal interval distribution, or non-equal interval distribution;

[0277] The number of subframes occupied by the random access channel in a radio frame.

[0278] Optionally, the random access channel satisfies any one of the following:

[0279] Overlapping with the SSB time domain;

[0280] It does not overlap with the SSB time domain.

[0281] Optionally, the random access channel satisfies any one of the following:

[0282] The random access channel does not span two symbol types;

[0283] The random access channel spans two symbol types.

[0284] Optionally, the random access channel satisfies any one of the following:

[0285] The time domain period of the random access channel is an even-numbered radio frame;

[0286] The time domain period of the random access channel is an odd-numbered radio frame;

[0287] The duration of the time domain period of the random access channel is N radio frames, where N is a positive integer.

[0288] Optionally, the random access channel satisfies any one of the following:

[0289] The subframes where the random access channel is located are evenly distributed in a radio frame;

[0290] The subframes where the random access channel is located are equally spaced in a radio frame;

[0291] The subframes where the random access channels are located are distributed at non-uniform intervals in a radio frame.

[0292] Optionally, the target information further includes: the number of subframes occupied by the random access channel in a radio frame.

[0293] The random access processing method provided in the embodiment of the present application may be executed by a random access processing device. In the embodiment of the present application, the random access processing device performing the random access processing method is taken as an example to illustrate the random access processing device provided in the embodiment of the present application.

[0294] 7 , an embodiment of the present application further provides a random access processing apparatus. As shown in FIG7 , the random access processing apparatus 700 includes:

[0295] A receiving module 701 is configured to receive a first random access channel configuration from a network-side device;

[0296] A first determining module 702 is configured to determine a random access channel resource in a sub-band full-duplex SBFD symbol according to the first random access channel configuration;

[0297] The SBFD symbols include: downlink symbols with uplink sub-bands.

[0298] Optionally, the time domain configuration information in the first random access channel configuration is related to target information, and the target information includes at least one of the following:

[0299] Synchronization signal block SSB;

[0300] Information indicating whether the random access channel spans two symbol types, the symbol types including sub-band full-duplex symbols and non-sub-band full-duplex symbols;

[0301] The time domain period of the random access channel;

[0302] A distribution state of a random access channel within a radio frame, wherein the distribution state includes uniform distribution, equal interval distribution, or non-equal interval distribution;

[0303] The number of subframes occupied by the random access channel in a radio frame.

[0304] Optionally, the random access channel satisfies any one of the following:

[0305] Overlapping with the SSB time domain;

[0306] It does not overlap with the SSB time domain.

[0307] Optionally, the random access channel satisfies any one of the following:

[0308] The random access channel does not span two symbol types;

[0309] The random access channel spans two symbol types.

[0310] Optionally, the random access channel satisfies any one of the following:

[0311] The time domain period of the random access channel is an even-numbered radio frame;

[0312] The time domain period of the random access channel is an odd-numbered radio frame;

[0313] The duration of the time domain period of the random access channel is N radio frames, where N is a positive integer.

[0314] Optionally, the random access channel satisfies any one of the following:

[0315] The subframes where the random access channel is located are evenly distributed in a radio frame;

[0316] The subframes where the random access channel is located are equally spaced in a radio frame;

[0317] The subframes where the random access channels are located are distributed at non-uniform intervals in a radio frame.

[0318] Optionally, the first determining module 702 is further configured to, when the random access channel spans two symbol types, determine a transmission parameter of the random access channel according to any one of the following:

[0319] the first random access channel configuration;

[0320] A starting symbol of the random access channel;

[0321] an end symbol of the random access channel;

[0322] Target indication information sent by a network-side device, where the target indication information is used to indicate a symbol type associated with the random access channel;

[0323] The proportion of different symbol types in the random access channel.

[0324] Optionally, the preamble corresponding to the random access channel satisfies at least one of the following:

[0325] When a reference signal received power of a reference signal received by the terminal is greater than or equal to a first preset value, the preamble code corresponding to the random access channel is a preamble code in a first preamble code set;

[0326] When the reference signal received power of the reference signal received by the terminal is greater than or equal to the second preset value and less than the first preset value, the preamble code corresponding to the random access channel is a preamble code in the second preamble code set;

[0327] When the reference signal received power of the reference signal received by the terminal is greater than or equal to a third preset value and less than a second preset value, the preamble code corresponding to the random access channel is a preamble code in a third preamble code set;

[0328] Among them, the first preamble code set is a preamble code set that does not perform preamble code retransmission; the second preamble code set is a preamble code set that uses sub-band full-duplex symbols to perform preamble code retransmission; the third preamble code set is a preamble code set that uses non-sub-band full-duplex symbols to perform preamble code retransmission.

[0329] Optionally, the random access processing device 700 further includes:

[0330] The first sending module switches to use the second random access channel to configure the transmission random access channel when a preset condition is met;

[0331] The second random access channel configuration is a random access channel configuration for a terminal that does not support sub-band full-duplex capability, and the preset condition includes at least one of the following:

[0332] When the power of the terminal reaches the maximum power configured for the first random access channel, retransmission of the random access channel is still triggered;

[0333] The number of retransmissions of the random access channel reaches a maximum number of transmissions associated with the first random access channel configuration.

[0334] Optionally, the maximum number of transmissions is the maximum number of preamble retransmissions for the same symbol type.

[0335] 8 , an embodiment of the present application further provides a random access processing apparatus. As shown in FIG7 , the random access processing apparatus 800 includes:

[0336] The second sending module 801 is configured to send a first random access channel configuration to the terminal, where the first random access channel configuration is used to determine resources of a random access channel in a sub-band full-duplex SBFD symbol;

[0337] The SBFD symbols include: downlink symbols with uplink sub-bands.

[0338] Optionally, the time domain configuration information in the first random access channel configuration is related to target information, and the target information includes at least one of the following:

[0339] Synchronization signal block SSB;

[0340] Information indicating whether the random access channel spans two symbol types, the symbol types including sub-band full-duplex symbols and non-sub-band full-duplex symbols;

[0341] The time domain period of the random access channel;

[0342] A distribution state of a random access channel within a radio frame, wherein the distribution state includes uniform distribution, equal interval distribution, or non-equal interval distribution;

[0343] The number of subframes occupied by the random access channel in a radio frame.

[0344] Optionally, the random access channel satisfies any one of the following:

[0345] Overlapping with the SSB time domain;

[0346] It does not overlap with the SSB time domain.

[0347] Optionally, the random access channel satisfies any one of the following:

[0348] The random access channel does not span two symbol types;

[0349] The random access channel spans two symbol types.

[0350] Optionally, the random access channel satisfies any one of the following:

[0351] The time domain period of the random access channel is an even-numbered radio frame;

[0352] The time domain period of the random access channel is an odd-numbered radio frame;

[0353] The duration of the time domain period of the random access channel is N radio frames, where N is a positive integer.

[0354] Optionally, the random access channel satisfies any one of the following:

[0355] The subframes where the random access channel is located are evenly distributed in a radio frame;

[0356] The subframes where the random access channel is located are equally spaced in a radio frame;

[0357] The subframes where the random access channels are located are distributed at non-uniform intervals in a radio frame.

[0358] Optionally, the target information further includes: the number of subframes occupied by the random access channel in a radio frame.

[0359] The random access processing device in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component of an electronic device, such as an integrated circuit or chip. The electronic device can be a terminal or other device other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can include servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0360] The random access processing device provided in the embodiment of the present application can implement the various processes implemented in the method embodiments of Figures 3 and 6 and achieve the same technical effects. To avoid repetition, they are not described here.

[0361] As shown in Figure 9, an embodiment of the present application also provides a communication device 900, including a processor 901 and a memory 902, where the memory 902 stores a program or instruction that can be run on the processor 901. When the program or instruction is executed by the processor 901, the various steps of the above-mentioned random access processing method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0362] 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 of the method embodiment shown in FIG3 . This terminal embodiment corresponds to the aforementioned terminal-side method embodiment, and each implementation process and implementation method of the aforementioned method embodiment are applicable to this terminal embodiment and can achieve the same technical effects. Specifically, FIG10 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0363] The terminal 1000 includes but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009 and at least some of the components of the processor 1010.

[0364] Those skilled in the art will appreciate that the terminal 1000 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 1010 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG10 does not limit the terminal. The terminal may include more or fewer components than shown, or may combine certain components, or have different component arrangements, which will not be described in detail here.

[0365] It should be understood that in an embodiment of the present application, the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042, and the graphics processor 10041 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 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include two parts: a touch detection device and a touch controller. Other input devices 10072 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.

[0366] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 1001 may transmit the data to the processor 1010 for processing. Furthermore, the RF unit 1001 may send uplink data to the network-side device. Typically, the RF unit 1001 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0367] The memory 1009 can be used to store software programs or instructions and various data. The memory 1009 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 1009 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 1009 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0368] Processor 1010 may include one or more processing units. Optionally, processor 1010 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 1010.

[0369] The radio frequency unit 1001 is configured to receive a first random access channel configuration from a network-side device;

[0370] Processor 1010 is configured to determine, according to the first random access channel configuration, resources of a random access channel in a sub-band full-duplex (SBFD) symbol;

[0371] The SBFD symbols include: downlink symbols with uplink sub-bands.

[0372] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above-mentioned terminal side method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0373] 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 of the method embodiment shown in FIG6 . 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 are applicable to this network-side device embodiment and can achieve the same technical effects.

[0374] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 11, the network-side device 1100 includes an antenna 1101, a radio frequency device 1102, a baseband device 1103, a processor 1104, and a memory 1105. Antenna 1101 is connected to radio frequency device 1102. In the uplink direction, radio frequency device 1102 receives information via antenna 1101 and sends the received information to baseband device 1103 for processing. In the downlink direction, baseband device 1103 processes the information to be transmitted and sends it to radio frequency device 1102. Radio frequency device 1102 processes the received information and then sends it through antenna 1101.

[0375] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 1103 , which includes a baseband processor.

[0376] The baseband device 1103 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 11, one of the chips is, for example, a baseband processor, which is connected to the memory 1105 through a bus interface to call the program in the memory 1105 and execute the network side device operations shown in the above method embodiment.

[0377] The network side device may further include a network interface 1106 , which is, for example, a Common Public Radio Interface (CPRI).

[0378] Specifically, the network side device 1100 of the embodiment of the present application also includes: instructions or programs stored in the memory 1105 and executable on the processor 1104. The processor 1104 calls the instructions or programs in the memory 1105 to execute the method of executing each module shown in FIG8 and achieve the same technical effect. To avoid repetition, it will not be described here.

[0379] An embodiment of the present application further 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 random access processing method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here.

[0380] 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.

[0381] 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 configured to run a program or instruction to implement each process of the above-mentioned random access processing method embodiment, and can achieve the same technical effect. To avoid repetition, it is not described here.

[0382] 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.

[0383] An embodiment of the present application further provides a computer program / program product, which includes computer instructions. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned random access processing method embodiment and can achieve the same technical effect. To avoid repetition, it is not repeated here.

[0384] An embodiment of the present application also provides a wireless communication system, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the random access processing method of the terminal side as described above, and the network side device can be used to execute the steps of the random access processing method of the network side device as described above.

[0385] 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.

[0386] 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.

[0387] 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 random access processing method, comprising: The terminal receives a first random access channel configuration from a network-side device; The terminal determines, according to the first random access channel configuration, resources of a random access channel in a sub-band full-duplex SBFD symbol; The SBFD symbols include: downlink symbols with uplink sub-bands.

2. The method according to claim 1, wherein The time domain configuration information in the first random access channel configuration is related to target information, where the target information includes at least one of the following: Synchronization signal block SSB; Information indicating whether the random access channel spans two symbol types, the symbol types including sub-band full-duplex symbols and non-sub-band full-duplex symbols; The time domain period of the random access channel; A distribution state of a random access channel within a radio frame, wherein the distribution state includes uniform distribution, equal interval distribution, or non-equal interval distribution; The number of subframes occupied by the random access channel in a radio frame.

3. The method according to claim 2, wherein: The random access channel satisfies any of the following conditions: Overlapping with the SSB time domain; It does not overlap with the SSB time domain.

4. The method according to claim 2 or 3, wherein: The random access channel satisfies any of the following conditions: The random access channel does not span two symbol types; The random access channel spans two symbol types.

5. The method according to any one of claims 2 to 4, wherein: The time domain period of the random access channel satisfies any one of the following: The time domain period of the random access channel is an even-numbered radio frame; The time domain period of the random access channel is an odd-numbered radio frame; The duration of the time domain period of the random access channel is N radio frames, where N is a positive integer.

6. The method according to any one of claims 1 to 5, wherein: The random access channel satisfies any of the following conditions: The subframes where the random access channel is located are evenly distributed in a radio frame; The subframes where the random access channel is located are equally spaced in a radio frame; The subframes where the random access channels are located are distributed at non-uniform intervals in a radio frame.

7. The method according to any one of claims 1 to 6, further comprising: In a case where the random access channel spans two symbol types, the terminal determines a transmission parameter of the random access channel according to any one of the following: the first random access channel configuration; A starting symbol of the random access channel; an end symbol of the random access channel; Target indication information sent by a network-side device, where the target indication information is used to indicate a symbol type associated with the random access channel; The proportion of different symbol types in the random access channel.

8. The method according to any one of claims 1 to 7, wherein: The preamble corresponding to the random access channel satisfies at least one of the following: When a reference signal received power of a reference signal received by the terminal is greater than or equal to a first preset value, the preamble code corresponding to the random access channel is a preamble code in a first preamble code set; When the reference signal received power of the reference signal received by the terminal is greater than or equal to the second preset value and less than the first preset value, the preamble code corresponding to the random access channel is a preamble code in the second preamble code set; When the reference signal received power of the reference signal received by the terminal is greater than or equal to a third preset value and less than a second preset value, the preamble code corresponding to the random access channel is a preamble code in a third preamble code set; Among them, the first preamble code set is a preamble code set that does not perform preamble code retransmission; the second preamble code set is a preamble code set that uses sub-band full-duplex symbols to perform preamble code retransmission; the third preamble code set is a preamble code set that uses non-sub-band full-duplex symbols to perform preamble code retransmission.

9. The method according to any one of claims 1 to 8, further comprising: When a preset condition is met, the terminal switches to using a second random access channel to configure a transmission random access channel; The second random access channel configuration is a random access channel configuration for a terminal that does not support sub-band full-duplex capability, and the preset condition includes at least one of the following: When the power of the terminal reaches the maximum power configured for the first random access channel, retransmission of the random access channel is still triggered; The number of retransmissions of the random access channel reaches a maximum number of transmissions associated with the first random access channel configuration.

10. The method according to claim 9, wherein: The maximum number of transmissions is the maximum number of preamble retransmissions for the same symbol type.

11. A random access processing method, comprising: The network side device sends a first random access channel configuration to the terminal, where the first random access channel configuration is used to determine resources of a random access channel in a sub-band full-duplex (SBFD) symbol; The SBFD symbols include: downlink symbols with uplink sub-bands.

12. The method according to claim 11, wherein The time domain configuration information in the first random access channel configuration is related to target information, where the target information includes at least one of the following: Synchronization signal block SSB; Information indicating whether the random access channel spans two symbol types, the symbol types including sub-band full-duplex symbols and non-sub-band full-duplex symbols; The time domain period of the random access channel; A distribution state of a random access channel within a radio frame, wherein the distribution state includes uniform distribution, equal interval distribution, or non-equal interval distribution; The number of subframes occupied by the random access channel in a radio frame.

13. The method according to claim 12, wherein: The random access channel satisfies any of the following conditions: Overlapping with the SSB time domain; It does not overlap with the SSB time domain.

14. The method according to claim 12 or 13, wherein: The random access channel satisfies any of the following conditions: The random access channel does not span two symbol types; The random access channel spans two symbol types.

15. The method according to any one of claims 12 to 14, wherein: The random access channel satisfies any of the following conditions: The time domain period of the random access channel is an even-numbered radio frame; The time domain period of the random access channel is an odd-numbered radio frame; The duration of the time domain period of the random access channel is N radio frames, where N is a positive integer.

16. The method according to any one of claims 12 to 15, wherein: The random access channel satisfies any of the following conditions: The subframes where the random access channel is located are evenly distributed in a radio frame; The subframes where the random access channel is located are equally spaced in a radio frame; The subframes where the random access channels are located are distributed at non-uniform intervals in a radio frame.

17. A random access processing apparatus, comprising: A receiving module, configured to receive a first random access channel configuration from a network-side device; A first determining module is configured to determine a resource of a random access channel in a sub-band full-duplex SBFD symbol according to the first random access channel configuration; The SBFD symbols include: downlink symbols with uplink sub-bands.

18. The device according to claim 17, wherein The time domain configuration information in the first random access channel configuration is related to target information, where the target information includes at least one of the following: Synchronization signal block SSB; Information indicating whether the random access channel spans two symbol types, the symbol types including sub-band full-duplex symbols and non-sub-band full-duplex symbols; The time domain period of the random access channel; A distribution state of a random access channel within a radio frame, wherein the distribution state includes uniform distribution, equal interval distribution, or non-equal interval distribution; The number of subframes occupied by the random access channel in a radio frame.

19. The device according to claim 18, wherein The random access channel satisfies any of the following conditions: Overlapping with the SSB time domain; It does not overlap with the SSB time domain.

20. The device according to claim 18 or 19, wherein The random access channel satisfies any of the following conditions: The random access channel does not span two symbol types; The random access channel spans two symbol types.

21. The device according to any one of claims 18 to 20, wherein The random access channel satisfies any of the following conditions: The time domain period of the random access channel is an even-numbered radio frame; The time domain period of the random access channel is an odd-numbered radio frame; The duration of the time domain period of the random access channel is N radio frames, where N is a positive integer.

22. The device according to any one of claims 18 to 21, wherein The determining module is further configured to, when the random access channel spans two symbol types, determine a transmission parameter of the random access channel according to any one of the following: the first random access channel configuration; A starting symbol of the random access channel; an end symbol of the random access channel; Target indication information sent by a network-side device, where the target indication information is used to indicate a symbol type of the random access channel; The proportion of different symbol types in the random access channel.

23. The apparatus according to any one of claims 17 to 22, further comprising: A first sending module is configured to switch to using a second random access channel to configure a transmission random access channel when a preset condition is met; The second random access channel configuration is a random access channel configuration for a terminal that does not support sub-band full-duplex capability, and the preset condition includes at least one of the following: When the power of the terminal reaches the maximum power configured for the first random access channel, retransmission of the random access channel is still triggered; The number of retransmissions of the random access channel reaches a maximum number of transmissions associated with the first random access channel configuration.

24. A random access processing apparatus, comprising: A second sending module, configured to send a first random access channel configuration to the terminal, where the first random access channel configuration is used to determine resources of a random access channel in a sub-band full-duplex SBFD symbol; The SBFD symbols include: downlink symbols with uplink sub-bands.

25. The apparatus according to claim 24, wherein The time domain configuration information in the first random access channel configuration is related to target information, where the target information includes at least one of the following: Synchronization signal block SSB; Information indicating whether the random access channel spans two symbol types, the symbol types including sub-band full-duplex symbols and non-sub-band full-duplex symbols; The time domain period of the random access channel; A distribution state of a random access channel within a radio frame, wherein the distribution state includes uniform distribution, equal interval distribution, or non-equal interval distribution; The number of subframes occupied by the random access channel in a radio frame.

26. The device according to claim 25, wherein The random access channel satisfies any of the following conditions: Overlapping with the SSB time domain; It does not overlap with the SSB time domain.

27. The device according to claim 25 or 26, wherein The random access channel satisfies any of the following conditions: The random access channel does not span two symbol types; The random access channel spans two symbol types.

28. The device according to any one of claims 25 to 27, wherein The random access channel satisfies any of the following conditions: The time domain period of the random access channel is an even-numbered radio frame; The time domain period of the random access channel is an odd-numbered radio frame; The duration of the time domain period of the random access channel is N radio frames, where N is a positive integer.

29. A terminal comprising 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 random access processing method according to any one of claims 1 to 10 are implemented.

30. A network-side device comprising 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 random access processing method according to any one of claims 11 to 16 are implemented.

31. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the random access processing method according to any one of claims 1 to 16.

32. A computer program product comprising computer instructions, wherein when the computer instructions are executed by a processor, the steps of the random access processing method according to any one of claims 1 to 16 are implemented.

Images