RO determination method and apparatus, RO configuration method and apparatus, and device and medium

Abstract

The present application belongs to the technical field of communications. Disclosed are a random access occasion (RO) determination method and apparatus, an RO configuration method and apparatus, and a device and a medium. The RO determination method in the embodiments of the present application comprises: a user equipment (UE) acquiring a set of RO configurations, wherein the RO configurations are determined on the basis of RO configuration parameters and frequency-domain unit configuration parameters, and the set of RO configurations is used for configuring at least one of the following: at least one RO configuration on at least two frequency-domain units, at least one RO configuration on at least two frequency-domain unit combinations related to a UE capability of the UE, and at least one independent RO configuration configured on at least one frequency-domain unit; and on the basis of a synchronization signal block (SSB) received on the at least one frequency-domain unit and the set of RO configurations, the UE determining an available RO on at least one frequency-domain unit corresponding to the SSB, wherein one RO configuration is used for configuring at least one RO for one frequency-domain unit.

Description

RO determination method, RO configuration method, device, equipment and medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 202311612139.7 filed on November 28, 2023, 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 opportunity (RO) determination method, RO configuration method, device, equipment, and medium. Background Art

[0004] In the prior art, when a user equipment (UE) performs random access, the UE needs to select a preamble from a physical random access channel transmission opportunity (RO) corresponding to a synchronization signal block (SSB) with a good signal from multiple synchronization signal blocks (SSBs) to initiate random access, and then access the serving cell, so that the network side device can communicate with the UE through the airspace parameters associated with the SSB.

[0005] Typically, a UE can aggregate multiple cells, known as carrier aggregation, to increase bandwidth. However, since each serving cell is managed independently, each cell is configured with independent control signaling or common signaling, such as SSB (Single Segment Signaling), resulting in unnecessary overhead and efficiency loss.

[0006] Therefore, how to reduce unnecessary overhead and efficiency loss during random access is a technical problem that needs to be solved urgently in this application. Summary of the Invention

[0007] The embodiments of the present application provide an RO determination method, an RO configuration method, an apparatus, a device, and a medium, which can reduce unnecessary overhead and efficiency loss during random access.

[0008] In a first aspect, a RO determination method is provided, which is performed by a user equipment (UE), and the method includes: the UE obtains a set of RO configurations, where the RO configurations are determined based on RO configuration parameters and frequency domain unit configuration parameters, and the set of RO configurations is used to configure at least one of the following: at least one RO configuration on at least two frequency domain units, at least one RO configuration on a combination of at least two frequency domain units related to the UE capabilities of the UE, and at least one independent RO configuration on at least one frequency domain unit; the UE determines, based on an SSB received on at least one frequency domain unit and the set of RO configurations, an available RO on at least one frequency domain unit corresponding to an SSB; wherein one RO configuration is used to configure at least one RO of one frequency domain unit.

[0009] In a second aspect, an RO configuration method is provided, which is executed by a network-side device, the method including: the network-side device configures a set of RO configurations, the RO configurations being determined based on RO configuration parameters and frequency domain unit configuration parameters, the set of RO configurations being used to configure at least one of the following: at least one RO configuration on at least two frequency domain units, at least one RO configuration on a combination of at least two frequency domain units related to the UE capabilities of the UE, and at least one independent RO configuration being configured on at least one frequency domain unit; the network-side device sends a set of RO configurations; the network-side device sends at least one SSB on at least one frequency domain unit and establishes a mapping relationship between the SSB and the set of RO configurations; wherein, one RO configuration is used to configure at least one RO of one frequency domain unit.

[0010] According to a third aspect, a RO determination device is provided, comprising: an acquisition module and a determination module; the acquisition module is configured to acquire a set of RO configurations, where the RO configurations are determined based on RO configuration parameters and frequency domain unit configuration parameters, and the set of RO configurations is used to configure at least one of the following: at least one RO configuration on at least two frequency domain units, at least one RO configuration on a combination of at least two frequency domain units related to the UE capabilities of the UE, and at least one independent RO configuration on at least one frequency domain unit; the determination module is configured to determine, based on an SSB received on at least one frequency domain unit and the set of RO configurations acquired by the acquisition module, an available RO on at least one frequency domain unit corresponding to an SSB; wherein one RO configuration is used to configure at least one RO of one frequency domain unit.

[0011] In a fourth aspect, an RO configuration device is provided, which includes: a configuration module, a sending module and an establishment module; the configuration module is used to configure a set of RO configurations, the RO configuration is determined based on RO configuration parameters and frequency domain unit configuration parameters, and the set of RO configurations is used to configure at least one of the following: at least one RO configuration on at least two frequency domain units, at least one RO configuration on a combination of at least two frequency domain units related to the UE capabilities of the UE, and at least one independent RO configuration configured on at least one frequency domain unit; the sending module is used to send a set of RO configurations; the sending module is also used to send at least one SSB on at least one frequency domain unit; the establishment module is used to establish a mapping relationship between the SSB and the set of RO configurations; wherein, one RO configuration is used to configure at least one RO of one frequency domain unit.

[0012] 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.

[0013] In a sixth aspect, a UE is provided, comprising a processor and a communication interface, wherein the processor is used to determine an available RO on at least one frequency domain unit corresponding to an SSB based on an SSB received on at least one frequency domain unit and a set of RO configurations; wherein an RO configuration is used to configure at least one RO of a frequency domain unit, and the communication interface is used to obtain a set of RO configurations, the RO configuration is determined based on RO configuration parameters and frequency domain unit configuration parameters, and the set of RO configurations is used to configure at least one of the following: at least one RO configuration on at least two frequency domain units, at least one RO configuration on a combination of at least two frequency domain units related to the UE capabilities of the UE, and at least one independent RO configuration configured on at least one frequency domain unit.

[0014] 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 first aspect are implemented.

[0015] In the eighth aspect, a network side device is provided, including a processor and a communication interface, wherein the processor is used to configure a set of RO configurations, the RO configurations are determined based on RO configuration parameters and frequency domain unit configuration parameters, and the set of RO configurations is used to configure at least one of the following: at least one RO configuration on at least two frequency domain units, at least one RO configuration on a combination of at least two frequency domain units related to the UE capabilities of the UE, and at least one independent RO configuration configured on at least one frequency domain unit, and the communication interface is used to send a set of RO configurations; send at least one SSB on at least one frequency domain unit and establish a mapping relationship between the SSB and a set of RO configurations; wherein one RO configuration is used to configure at least one RO of a frequency domain unit.

[0016] 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.

[0017] 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.

[0018] 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.

[0019] In a twelfth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the method described in the first aspect.

[0020] In an embodiment of the present application, a UE obtains a set of RO configurations, which are determined based on RO configuration parameters and frequency domain unit configuration parameters. The set of RO configurations is used to configure at least one of the following: at least one RO configuration on at least two frequency domain units, at least one RO configuration on a combination of at least two frequency domain units related to the UE's UE capabilities, and at least one independent RO configuration on at least one frequency domain unit. The UE determines, based on an SSB received on at least one frequency domain unit and the set of RO configurations, an available RO on at least one frequency domain unit corresponding to an SSB. One RO configuration is used to configure at least one RO on one frequency domain unit. In this solution, the set of RO configurations obtained by the UE is the RO configuration on at least one frequency domain unit. The UE can determine the available RO using only one SSB and the RO configurations on multiple frequency domain units, thereby eliminating the need for the network to independently send an SSB for each frequency domain unit, reducing unnecessary signaling overhead and efficiency loss. In addition, in an embodiment of the present application, the UE can also initiate random access using available ROs on different frequency domain units, thereby reducing the probability of collision during the random access process and improving the success rate of random access. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic diagram of a possible structure of a communication system involved in an embodiment of the present application;

[0022] FIG2 is a schematic diagram of mapping SSB to RO on a carrier in the prior art;

[0023] FIG3 is a schematic diagram of a relationship between a serving cell, a BWP, and a frequency domain unit according to an embodiment of the present application;

[0024] FIG4 is a second schematic diagram of the relationship between a serving cell, a BWP, and a frequency domain unit provided in an embodiment of the present application;

[0025] FIG5 is a flow chart of a method for determining an RO according to an embodiment of the present application;

[0026] FIG6 is a flow chart of an RO configuration method provided in an embodiment of the present application;

[0027] FIG7 is a schematic diagram of configuring an RO configuration in an RO determination method provided in an embodiment of the present application;

[0028] FIG8 is a second schematic diagram of configuring RO configuration in an RO determination method provided in an embodiment of the present application;

[0029] FIG9 is a third schematic diagram of configuring RO configuration in an RO determination method provided in an embodiment of the present application;

[0030] FIG10 is a second flow chart of a RO determination method provided in an embodiment of the present application;

[0031] FIG11 is a third flow chart of a RO determination method provided in an embodiment of the present application;

[0032] FIG12 is a schematic diagram of an RO starting frequency position when the frequency domain unit is a carrier in an RO determination method provided in an embodiment of the present application;

[0033] FIG13 is a schematic diagram of configuring a common frequency reference point in an RO determination method provided in an embodiment of the present application;

[0034] FIG14 is a schematic diagram of the RO starting frequency position when the frequency domain unit is a band in an RO determination method provided by an embodiment of the present application;

[0035] FIG15 is a schematic diagram showing that the SSB of a frequency domain unit can be mapped to ROs on all indicated frequency domain units in an RO determination method provided in an embodiment of the present application;

[0036] FIG16 is a schematic diagram showing that the SSB of a frequency domain unit can be mapped to the RO on the indicated part of the frequency domain units in an RO determination method provided in an embodiment of the present application;

[0037] FIG17 is a schematic diagram of the mapping relationship between SSB and RO in an RO determination method provided in an embodiment of the present application;

[0038] FIG18 is a schematic diagram of the mapping relationship between SSB and RO in an RO determination method provided in an embodiment of the present application;

[0039] FIG19 is a schematic diagram of the mapping relationship between SSB and RO in an RO determination method provided in an embodiment of the present application;

[0040] FIG20 is a schematic diagram of the mapping relationship between SSB and RO in an RO determination method provided in an embodiment of the present application;

[0041] FIG21 is a schematic diagram of a structure of an RO determination device according to an embodiment of the present application;

[0042] FIG22 is a second structural diagram of an RO determination device provided in an embodiment of the present application;

[0043] FIG23 is a schematic structural diagram of an RO configuration device provided in an embodiment of the present application;

[0044] FIG24 is a schematic diagram of the hardware structure of a communication device provided in an embodiment of the present application;

[0045] FIG25 is a schematic diagram of the hardware structure of a terminal provided in an embodiment of the present application;

[0046] Figure 26 is a schematic diagram of the hardware structure of a network-side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0048] 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.

[0049] The following is an explanation of the technical terms involved in the embodiments of this application:

[0050] 1) Random access resource selection

[0051] In the prior art, a random access procedure may be a contention-based random access procedure or a non-contention-based random access procedure. The random access procedure may be a four-step random access procedure, also known as a Type-1 random access procedure, or a two-step random access procedure, also known as a Type-2 random access procedure.

[0052] In the contention-based 4-step random access process (Random Access Channel, RACH), the UE first sends message 1 (Msg1) to the network device, which includes a preamble. After the network device detects the preamble, it sends message 2 (Msg2), namely a Random Access Response (RAR) message, which includes the number of the preamble detected by the network device and the uplink radio resources allocated to the UE to send Msg3. After receiving Msg2, the UE 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 UE confirms that the contention resolution information is consistent with the one it sent in Msg3, thus completing the 4-step random access.

[0053] The network-side device includes uplink grant (UL grant) information in the RAR to indicate the scheduling information of the Msg3 Physical Uplink Shared Channel (PUSCH), and includes information such as RAP ID (RACH preamble ID), Transmission Configuration-Radio Network Temporary Identifier (TC-RNTI), and Timing Advance (TA). If the network-side device does not receive the Msg3 PUSCH, it can schedule the retransmission of the Msg3 PUSCH in the PDCCH scrambled by the TC-RNTI.

[0054] For the contention random access process, different UEs randomly select preambles for transmission. In this way, different UEs may select the same preamble to send on the same time-frequency radio resources, i.e., RO resources. This situation can be understood as a UE preamble conflict. In this case, different UEs will receive the same RAR. At this time, different UEs will transmit MSG3 PUSCH according to the scheduling information in the RAR UL grant. The network can only decode the PUSCH (including contention resolution information) sent by one UE on one Msg3 PUSCH scheduling resource. Therefore, the network will include the contention resolution information received in Msg3 in Msg4. If the contention resolution information in Msg4 received by the UE matches the contention resolution information sent by the UE in Msg3 PUSCH, the UE considers that the contention resolution is successful. If they do not match, the contention resolution is considered unsuccessful.

[0055] If the contention resolution is unsuccessful, the UE reselects RACH transmission resources, performs PRACH transmission, and makes the next random access attempt.

[0056] In NR Rel-16, the two-step random access procedure 2-step RACH was introduced. The first step is that the UE sends MsgA to the network side device. After receiving MsgA, the network side device sends a MsgB message to the UE. If the UE does not receive MsgB within a certain period of time, the UE 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 procedure to the 4-step random access procedure. MsgA includes the MsgA preamble part and the MsgA PUSCH 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 RO. MsgA PUSCH resources are a set of PUSCH resources configured relative to each PRACH slot, including time-frequency resources and DMRS resources.

[0057] 2) Selection of random access resources and mapping of synchronization signal blocks (SSBs) to physical random access channel transmission opportunities (PRACH Occasions, ROs).

[0058] In NR, a cell can configure multiple frequency division multiplexing (FDM) physical ROs in a time domain location for PRACH transmission. At a time, the number of ROs that can be FDMed can be: {1, 2, 4, 8}. At a time, there are 8 RO resources distributed on different frequencies.

[0059] The random access preamble can only be transmitted on the RO resource configured by the parameter PRACHConfigurationIndex. The random access preamble can only be transmitted on the frequency domain resource configured by the parameter random access channel-frequency division multiplexing (PRACH-FDM). The PRACH frequency domain resource is 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.

[0060] In NR, there is an association, or mapping, 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 UE sends the Preamble on the RO associated with the SSB. In this way, the UE selects the RO / "RO and preamble combination" associated with the SSB with a good signal based on the strength of the received downlink beam / SSB, and sends Msg1. In this way, the network can determine the SSB selected by the UE based on the RO / "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. Specifically, the current mapping of SSB to RO on the carrier is shown in Figure 2.

[0061] 3) 5G Initial Bandwidth Part (BWP) and CORESET#0

[0062] The initial uplink and downlink bandwidths, namely the Initial DL BWP and initial UL BWP, are configured in System Information Block 1 (SIB1). If the initial BWP is not configured, the default size is the size of CORESET#0. The initial BWP is mainly used for the initial access process, such as receiving SIB1, receiving RAR and Msg4 during random access, and sending preamble and Msg3.

[0063] 4) Flexible serving cell

[0064] The introduction of flexible cells enables flexible and efficient utilization of adjacent non-contiguous spectrum from the perspectives of L1 / L2 / L3 signaling, procedures, and cell management. This benefits both connected and idle UEs, improving user-perceived data rates, energy savings, system capacity, and coverage. It also simplifies network management complexity and improves energy efficiency.

[0065] 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.

[0066] 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 (WLAN) access point (AS) or a 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.

[0067] The following describes in detail the RO determination method, RO configuration method, apparatus, device, and medium provided in the embodiments of the present application through some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0068] The embodiments of the present application can be applied to two flexible cell deployment methods. Method 1: As shown in Figure 3, the same serving cell can communicate by aggregating multiple bands or multiple BWPs on multiple carriers, such as bands 1 to band 3 in Figure 3. Method 2: As shown in Figure 4, the same serving cell communicates through a combined BWP. This combined BWP aggregates frequency domain units on multiple bands or carriers with different frequencies.

[0069] FIG5 shows a flow chart of a RO determination method provided in an embodiment of the present application. As shown in FIG5 , the RO determination method may include the following steps 201 and 202:

[0070] Step 201: The UE obtains a set of RO configurations.

[0071] In some embodiments of the present application, the RO configuration is determined based on RO configuration parameters and frequency domain unit configuration parameters.

[0072] Optionally, in some embodiments of the present application, the above RO configuration is configured by a network-side device.

[0073] Furthermore, in the embodiment of the present application, in combination with FIG5 , as shown in FIG6 , before the above step 201 , the embodiment of the present application further provides an RO configuration method. The RO configuration method is performed by the network side device and specifically includes steps A1 to A3:

[0074] Step A1: The network side device configures a set of RO configurations.

[0075] In some embodiments of the present application, the above set of RO configurations is used to configure at least one of the following:

[0076] Configuration 1: at least one RO configuration on at least two frequency domain units,

[0077] Configuration 2: at least one RO configuration on at least two frequency domain unit combinations related to the UE capability of the UE,

[0078] Configuration 3: At least one independent RO configuration is configured on at least one frequency domain unit.

[0079] Step A2: The network-side device sends a set of RO configurations.

[0080] Step A3: The network-side device sends at least one SSB on at least one frequency domain unit and establishes a mapping relationship between the SSB and a set of RO configurations.

[0081] In some embodiments of the present application, the RO configuration parameters include at least one of the following:

[0082] Frequency domain resources of RO;

[0083] Reference starting frequency of RO;

[0084] RO number;

[0085] RO's time domain resources;

[0086] The sequence length and subcarrier spacing (SCS) of the preamble sequence configured in each frequency domain unit in at least one frequency domain unit;

[0087] Each frequency domain unit in at least one frequency domain unit is configured with a frequency division multiplexing RO quantity.

[0088] In some embodiments of the present application, the RO time domain resource determination may be determined according to at least one of the following predefined rules: Preamble format, radio frame number, subframe number, starting symbol: 10, number of prach slots in a subframe, number of time domain prach occasions in a slot: Prach duration:

[0089] For example, the RO symbol position is determined by the following formula

[0090] Configure a subcarrier-related value for the network side.

[0091] In some embodiments of the present application, the reference starting frequency of the RO may be determined according to the frequency domain unit configuration parameters.

[0092] In some embodiments of the present application, the sequence length and SCS of the preamble sequence configured in each frequency domain unit in the at least one frequency domain unit are configured by a network side device.

[0093] In some embodiments of the present application, the frequency domain PRB occupied by the RO can be determined by Table 1 (calculated at the granularity of the physical uplink shared channel (PUSCH)) through the sequence length and SCS of the preamble sequence configured in each frequency domain unit. Table 1 is as follows:

[0094] Table 1

[0095] Among them, L RA is the length of the preamble sequence, Δf RA is the subcarrier spacing of the preamble sequence. is the frequency offset value.

[0096] In some embodiments of the present application, the network device can configure msg1-FDM for each frequency domain unit, that is, each frequency domain unit in the at least one frequency domain unit is configured with a frequency division multiplexing RO quantity. This can determine the number of ROs in the frequency domain for a UL BWP, and further obtain the RO frequency domain resources and quantity for all UL BWPs.

[0097] In some embodiments of the present application, the RO number is a global index number.

[0098] In some embodiments of the present application, the frequency domain unit may include multiple frequency domain unit types, such as BWP, carrier, band, etc.

[0099] In some embodiments of the present application, the frequency domain unit type may be configured by a network-side device, and the interpretation of subsequent parameters may be determined according to the frequency domain unit type.

[0100] For example, a carrier may contain multiple BWPs, and a band may contain multiple carriers.

[0101] In a possible embodiment, for the above configuration 1, when the UE supports all frequency domain units, the UE can see the ROs on all frequency domain units, and the network side device configures at least one RO configuration in at least two frequency domain units based on the association relationship between SSB and RO.

[0102] For example, as shown in Figure 7, the figure includes three bands, namely the frequency domain units mentioned above, namely band A, band B, and band C. Band A includes carrier p, which includes BWP i; band B includes carrier q, which includes BWP j; and band C includes carrier m, which includes BWP k. SSBs are transmitted on band C. SSBs can be associated with the ROs of the BWPs of all three bands. Therefore, the network-side device maps SSBs to the ROs of the BWPs on the three bands. The ROs of the BWPs of the three bands are uniformly numbered, namely RO 0 to RO 5.

[0103] It should be noted that the RO configuration in Figure 5 includes RO configurations for three BWPs on three bands, including RO 0 to RO 5, a total of 6 ROs. The RO configuration of BWP i includes 1 RO. The RO configuration on BWP j includes 2 ROs, and the RO configuration on BWP k includes 3 ROs.

[0104] The network configures the corresponding carriers for each band and the corresponding UL and DL BWPs for each carrier. The starting frequency of the lowest-numbered RO for each UL BWP is determined relative to the starting frequency of the UL BWP. For the network to configure RO resources for a UE, it must first configure the parameters of the frequency domain unit and the RO. If the frequency domain unit is a BWP, the network must configure the BWP parameters and the RO parameters on the BWP.

[0105] It should be noted that Figure 7 above uses a TDD system as an example; FDD systems are similar. The SSB is located in the DL BWP, and the RO is configured in the UL BWP. For simplicity, they are shown in one figure. In a TDD system, the UL and DL BWPs share the same center frequency, but can have different bandwidths. In an FDD system, the UL and DL BWPs are configured independently.

[0106] In a possible embodiment, for the above configuration 2, when the UE supports some frequency domain units, the UE can see the RO on the supported frequency domain units, and the network side device configures at least one RO configuration on at least two frequency domain unit combinations related to the UE capabilities of the UE based on the association relationship between SSB and RO.

[0107] Exemplarily, referring to FIG. 7 and as shown in FIG. 8 , it is assumed that UE1 only supports band A and band C, UE2 only supports band B and band C, and UE3 only supports band C.

[0108] Exemplarily, after the network-side device configures the RO according to the UE capability, the UE can see the RO configurations on different frequency domain unit combinations.

[0109] For example, in conjunction with Figure 8, UE 1 can see RO0 on BWP i of band A and RO0 to RO2 on BWP k of band C through the RO configuration parameters configured by the network side device; UE2 can see RO0 to RO1 on BWP j of band B and RO0 to RO2 on BWP k of band C through the RO configuration parameters configured by the network side device; UE3 can see RO0 to RO2 on BWP k of band C through the RO configuration parameters configured by the network side device.

[0110] For example, the network device can map SSBs to ROs of BWPs on different band combinations based on different UE capabilities. The network device can notify the band combination and the RO number of each frequency domain unit corresponding to the band combination. For different band combinations, the ROs are renumbered in a predefined order.

[0111] For example, the network device notifies the UE:

[0112] For UEs supporting the combined capability of band A and band C, RO 0 on BWP i for band A and RO 0 on BWP k for band C are applied. The UE assumes that the SSB of the network-side device is mapped to RO 0, i.e. RO0 on BWP i, and RO1, i.e. RO 0 on BWP k.

[0113] For UEs supporting the combined capability of band B and band C, RO 0 and RO 1 on BWP j for band B, and RO 1 on BWP k for band C are applied. The UE assumes that the SSBs of the network-side device are mapped to RO 0 and RO 1, i.e., RO 0 and RO 1 on BWP j, and RO2, i.e., RO 1 on BWP k.

[0114] For UEs that support the combined capability of band C, RO 2 on BWP k of band C is applied. The UE assumes that the SSB of the network-side device is mapped to RO 0, that is, RO 2 on BWP k.

[0115] In this way, the UE renumbers the different band combination capabilities and RO numbers notified by the network side device according to the supported band combination capabilities.

[0116] Exemplarily, the network-side device may indicate the global number of the RO on each frequency domain unit.

[0117] For example, referring to FIG8 , the network side device notifies the UE:

[0118] The RO number on bwp i of Band A is RO0, the RO numbers on bwp j of Band B are RO1 and RO2, and the RO numbers on bwp k of Band C are RO3 to RO5.

[0119] At this point, the network side device can notify the UE:

[0120] For UEs supporting the combined capability of band A and band C, RO 0 on BWP i for band A and RO 3 on BWP k for band C are applied. The UE assumes that the SSB of the network-side device is mapped to RO 0, i.e. RO0 on BWP i, and RO1, i.e. RO 3 on BWP k.

[0121] For UEs supporting the combined capability of band B and band C, RO 1 and RO 2 on BWP j for band B, and RO 4 on BWP k for band C are applied. The UE assumes that the SSBs of the network-side device are mapped to RO 0 and RO1, i.e., RO 1 and RO2 on BWP j, and RO2, i.e., RO 4 on BWP k.

[0122] For UEs supporting the combined capability of band C, RO 5 on BWP k of band C is applied. The UE assumes that the SSB of the network-side device is mapped to RO 0 (i.e., RO 5 on BWP k).

[0123] In this way, the UE renumbers the different band combination capabilities and RO numbers notified by the network side device according to the supported band combination capabilities.

[0124] In a possible embodiment, for the above configuration 3, the network side device considers the load balancing of ROs on different frequency domain units, and the network side device can configure an independent RO configuration on each frequency domain unit in at least one frequency domain unit according to the same SSB.

[0125] For example, in combination with FIG7 , as shown in FIG9 , there is an independent SSB-RO mapping for BWPs i, j, and k. The UE can select the RO on any BWP to initiate random access.

[0126] Optionally, in some embodiments of the present application, in combination with FIG5 , as shown in FIG10 , before the above step 201 , the RO determination method provided in the embodiment of the present application further includes step 301 :

[0127] Step 301: The UE obtains frequency domain unit configuration parameters.

[0128] In some embodiments of the present application, the frequency domain unit configuration parameters are used to determine a reference starting frequency of the RO.

[0129] In some embodiments of the present application, the frequency domain unit configuration parameters include:

[0130] a frequency reference point in at least one frequency domain unit;

[0131] a frequency offset value of each frequency domain unit in at least one frequency domain unit relative to a frequency reference point;

[0132] an SCS for each frequency domain unit in at least one frequency domain unit;

[0133] a cyclic prefix of each frequency domain unit in at least one frequency domain unit;

[0134] The starting resource block (RB) and size of each frequency domain unit in at least one frequency domain unit.

[0135] In some embodiments of the present application, the frequency domain reference point includes at least one of the following:

[0136] There is no frequency reference point of a frequency domain unit of a cell defining SSB (CD-SSB) in at least one frequency domain unit;

[0137] A common frequency reference point in at least one frequency domain unit without CD-SSB;

[0138] a predetermined frequency reference point in at least one frequency domain unit;

[0139] A common frequency reference point in at least one frequency domain unit.

[0140] Optionally, in the embodiment of the present application, in combination with FIG10 , as shown in FIG11 , the above step 301 specifically includes step 301a and step 302b:

[0141] Step 301a: The network-side device sends frequency domain unit configuration parameters to the UE.

[0142] Step 301b: The UE receives frequency domain unit configuration parameters sent from the network side device.

[0143] In some embodiments of the present application, the above-mentioned “frequency domain unit without CD-SSB” refers to a frequency domain unit without an associated CD-SSB.

[0144] In one possible example, when the frequency domain unit type is BWP, even if the CD-SSB is not in a configured or indicated BWP, i.e., the initial BWP, but the CD-SSB is associated with the BWP, it is still regarded as a "frequency domain unit with CD-SSB".

[0145] It can be understood that when the frequency domain unit is a carrier or a band, a similar definition can be adopted.

[0146] In some embodiments of the present application, a “carrier or band without CD-SSB” may be defined as meaning that the carrier or band does not carry CD-SSB.

[0147] In a possible example, when the frequency domain unit type is BWP, the network-side device configures a frequency reference point, such as Point A, for at least one frequency domain unit.

[0148] In one example, for the DL BWP where the SSB is located and the DL BWP of the same carrier, the carrier, band, that is, the frequency reference point of the RO on the frequency domain unit where the SSB is located, may not be configured, and may be determined based on the lowest frequency domain position of the frequency where the SSB is located, the subcarrier offset k_ssb parameter, and offsetToPoint A.

[0149] For example, the frequency domain position of point A = the lowest frequency domain position of the frequency where the SSB is located - k_ssb*u - offsetToPoint A*12*u. u is the subcarrier spacing, which is 15kHz for FR1 and 60kHz for FR2. Among them, the common reference point, resource block grids, subcarrier offset k_ssb parameter, and offsetToPoint A can be notified by the network side device in the Master Information Block (MIB) and / or SIB information.

[0150] It can be understood that the BWP where the SSB is located means that the SSB and BWP are on the same carrier or band.

[0151] In another example, for DL ​​BWP without SSB on different carriers, the network side device can directly configure a frequency domain reference point for each carrier, for example, directly configure a predefined frequency reference point for each carrier through a SIB message to determine the positions of the UL BWP and RO.

[0152] It should be noted that the network-side equipment configures frequency reference points for frequency domain units, primarily to account for the different RB and slot sizes corresponding to different SCSs. Therefore, different SCSs have their own resource block grids, represented by common resource blocks (CRBs), starting with CRB0. Point A is the same for the resource block grids of all SCSs, and its position corresponds to the center of the first subcarrier (Subcarrier0) of CRB0 in the resource grid of each SCS. This allows each UL BWP to calculate its starting position based on Point A, thereby determining the starting frequency of the RO.

[0153] In another possible embodiment, the network-side device configures the same frequency reference point for all frequency domain units. Because point A of the frequency domain unit where the CD-SSB is located can be obtained through SSB information, the network-side device only needs to notify the frequency reference point of other frequency domain units.

[0154] In a possible example, when the frequency domain unit type is BWP, the network-side device configures a frequency offset value, that is, an offsetToCarrier value, for at least one frequency domain unit.

[0155] Exemplarily, the offsetToCarrier value configured by the network-side device is used to indicate the frequency domain offset of the lowest available carrier on a carrier.

[0156] Exemplarily, in conjunction with FIG7 , the network-side device may configure a frequency offset value for each carrier where the BWP is located, which are offsetToCarrier m, offsetToCarrier q, and offsetToCarrier p, respectively.

[0157] In a possible example, when the frequency domain unit type is BWP, the network-side device starts an RB for at least one frequency domain unit, that is, relative to a carrier starting position.

[0158] Exemplarily, in conjunction with FIG7 , the starting RBs of each UL BWP are: and as well as and UE can use Point A, offsetToCarrier_i configured on the network side, msg1-FrequencyStart_i, determines the starting frequency position of RO.

[0159] It can be understood that i is a subscript used to distinguish different BWPs of different bands and different carriers.

[0160] In another possible example, as shown in FIG12 , when the frequency domain unit type is a carrier, it is not necessary to indicate The starting frequency position of the carrier can be indicated to the lowest position of the RO, and the msg1-FrequencyStart_i indication can be redefined. In this way, the UE can determine the starting frequency position of the RO through Point A, offsetToCarrier_i, and msg1-FrequencyStart_i configured on the network side.

[0161] In another possible embodiment, as shown in FIG13 in combination with FIG12 , when the frequency domain unit type is a carrier, all frequency domain units may be configured with the same frequency domain reference point, ie, the common frequency domain reference point.

[0162] Exemplarily, the same frequency domain reference point, that is, the above-mentioned common frequency domain reference point, may also be configured for all frequency domain units not associated with CD-SSB.

[0163] In another possible example, as shown in FIG14 , when the frequency domain unit type is band, it is not necessary to indicate To indicate the starting frequency position of the band to the lowest position of the RO, you can redefine the msg1-FrequencyStart_i indication. The offsetToband_i value can be used to indicate the starting frequency position of the RO from point A to the lowest frequency of the band. In this way, the UE can determine the starting frequency position of the RO based on Point A, offsetToBand_i, and msg1-FrequencyStart_i configured on the network side.

[0164] Step 202: The UE determines an available RO on at least one frequency domain unit corresponding to an SSB according to an SSB received on at least one frequency domain unit and a set of RO configurations.

[0165] In some embodiments of the present application, the UE may determine an available RO according to a first rule.

[0166] In some embodiments of the present application, the above-mentioned first rule may be predefined, or specified by a protocol, or configured by a network-side device.

[0167] In some embodiments of the present application, the first rule includes:

[0168] For UEs that support band combination > 1, select the RO on the frequency domain unit other than the frequency domain unit where the SSB is located;

[0169] For a UE that supports only one band, the RO on the frequency domain unit where the SSB is located is selected.

[0170] In this way, the collision probability of random access can be reduced.

[0171] For example, referring to Figure 8, for a UE that supports band A and band C, the UE determines that its available RO is located on the BWP of band A; for a UE that supports band B and band C, it determines that its available RO is located on the BWP of band B; for a UE that only supports band C, it determines that its available RO is located on the BWP of band C; for a UE that supports bands A, B, and C, any one of the RO on the BWP of band A or the RO on the BWP of band B is selected.

[0172] Optionally, in some embodiments of the present application, after the UE determines an available RO corresponding to the SSB, the UE initiates a preamble on the available RO for random access.

[0173] In some embodiments of the present application, the UE may transmit the preamble on the available RO according to the first parameter configured by the network side.

[0174] In some embodiments of the present application, the first parameter includes at least one of the following:

[0175] Prach-ConfigurationIndex: Parameters that determine the time domain and prach format

[0176] prach-RootSequencyIndex: determines the premable root sequence

[0177] zeroCorrelationZoneConfig: determines the premable cyclic shift and set type

[0178] preambleRecieivedTargetWindow: determines the power threshold

[0179] totalNumberOfRA-premables: determines the total number of PREAMBLE cells

[0180] numberOfRA-PreamablesGroupA: determines the scope of the GROUP for contention-based preambles

[0181] msg1-SubcarrierSpacing: The size of SCS.

[0182] In an embodiment of the present application, a RO determination method is provided in which a UE obtains a set of RO configurations. The RO configurations are determined based on RO configuration parameters and frequency domain unit configuration parameters. The set of RO configurations is used to configure at least one of the following: at least one RO configuration on at least two frequency domain units, at least one RO configuration on a combination of at least two frequency domain units related to the UE's capabilities, or at least one independent RO configuration on at least one frequency domain unit. The UE determines, based on a single SSB received on the at least one frequency domain unit and the set of RO configurations, an available RO on at least one frequency domain unit corresponding to an SSB. An RO configuration is used to configure at least one RO on a frequency domain unit. In this solution, the set of RO configurations obtained by the UE is the RO configuration on at least one frequency domain unit. The UE can determine the available RO using only one SSB and the RO configurations on multiple frequency domain units. This eliminates the need for the network to independently send an SSB for each frequency domain unit, reducing unnecessary signaling overhead and efficiency loss. Furthermore, in this embodiment of the present application, the UE can also initiate random access using available ROs on different frequency domain units, thereby reducing the probability of collision during random access and improving the success rate of random access.

[0183] Optionally, in the embodiment of the present application, the above step 202 specifically includes step 202a and step 202b:

[0184] Step 202a: The UE sorts at least one RO based on a predefined sorting rule and a set of RO configurations to obtain a first sequence.

[0185] In some embodiments of the present application, the above-mentioned predefined sorting rules are determined based on at least one of the following: predefined, or specified by the protocol, or configured by the network side device.

[0186] In some embodiments of the present application, the predefined sorting rule includes sorting all ROs according to the increasing or decreasing frequencies of the frequency domain units where the ROs are located, or sorting all ROs according to the increasing or decreasing frequencies of the ROs in each RO configuration in a set of RO configurations.

[0187] For example, all ROs are sorted in ascending order of the frequency of the frequency domain unit in which the RO is located. That is, all frequency domain units are first sorted in ascending order of the frequency of the frequency domain unit. Then, the ROs within the frequency domain unit are sorted in ascending order of the frequency, as shown in FIG7 .

[0188] It should be noted that the predefined sorting rules of the above steps can be adopted in the embodiments of the present application, or other sorting rules can be used, and this application does not limit this.

[0189] In some embodiments of the present application, the above-mentioned predetermined mapping rule is determined based on at least one of the following: predefined, or specified by the protocol, or configured by the network side device.

[0190] In some embodiments of the present application, the predetermined mapping rule includes at least one of the following:

[0191] Rule 1: uniformly map at least one SSB to at least one RO on at least two frequency domain units in a set of RO configurations;

[0192] Rule 2: Map at least one SSB to the RO on the first frequency domain unit in a set of RO configurations;

[0193] Rule 3: Map one SSB to an RO on at least one frequency domain unit in a set of RO configurations.

[0194] In some embodiments of the present application, the first frequency domain unit is one or more frequency domain units among the at least two frequency domain units.

[0195] In some embodiments of the present application, the first frequency domain unit is determined based on the UE capability of the UE.

[0196] In a possible example, as shown in FIG15 , the SSB of a frequency domain unit can be mapped to all associated frequency domain units, that is, the SSB is associated with frequency domain units A to C, and the SSB is mapped to RO0 to RO5 on frequency domain units A to C.

[0197] In another possible example, as shown in Figure 16, the SSB of a frequency domain unit can also be mapped to ROs on a subset of all associated frequency domain units. For example, an SSB is associated with frequency domain units A to C, but the SSB can only be mapped to ROs 0 to RO4 on frequency domain units B and C. Optionally, the SSB can also be mapped only to ROs on frequency domain unit B, that is, ROs 0-1. SSBs are not necessarily mapped to ROs on the same frequency domain unit.

[0198] Exemplarily, the frequency domain unit associated with the SSB mapping of a frequency domain unit may be notified by MIB or SIB.

[0199] Example 1, in conjunction with Figure 7, for Rule 1 above, the SSB of a frequency domain unit in a serving cell containing multiple frequency domain units can be mapped to ROs on all indicated frequency domain units or a subset of frequency domain units, with all ROs using a unified numbering. The ROs on these frequency domain units are sorted in a predefined order, such as ascending or descending frequency, and these ROs are common to all UEs. This method can be used for UEs that support all frequency domain unit capabilities.

[0200] Example 2, in conjunction with Figure 8, for the above rule 2, the SSB of a frequency domain unit in a service cell containing multiple frequency domain units can be mapped to a combination of frequency domain units, that is, the RO of the first frequency domain unit mentioned above, and the RO in each frequency domain unit combination uses a unified number. Each UE determines the RO on the corresponding frequency domain unit combination based on the capabilities of the supported frequency domain unit combination.

[0201] Example 3, in combination with Figure 9, for the above rule 3, the SSB of a frequency domain unit in a service cell containing multiple frequency domain units is mapped to the RO of at least one frequency domain unit. In each frequency domain unit, the ROs are sorted and numbered in a predefined order. The UE can determine the RO on any frequency domain unit according to its own capabilities.

[0202] In some embodiments of the present application, the mapping order of SSBs to valid ROs in the above predetermined mapping rules may be one or more of the following orders:

[0203] Mapping is performed in ascending order according to the number of the preamble code in each RO configuration in the set of RO configurations;

[0204] Mapping is performed in ascending order according to the index of the frequency domain resource of the RO in each RO configuration in the set of RO configurations;

[0205] When the network side device configures the at least two ROs in one time domain unit, mapping is performed in ascending order according to the RO number in each RO configuration in the set of RO configurations;

[0206] When the network side device configures the at least two ROs in multiple time domain units, mapping is performed in ascending order according to the indexes of the multiple time domain units.

[0207] For example, if msg1-FDM = 1 and ssb-perRACH-Occasion = 1, mapping can be performed according to Figure 17. If msg1-FDM = 2 and ssb-perRACH-Occasion = 8, mapping can be performed according to Figure 18. If msg1-FDM = 2 and ssb-perRACH-Occasion = 1, mapping can be performed according to Figure 19. If msg1-FDM = 2 and ssb-perRACH-Occasion = 1 / 2, mapping can be performed according to Figure 20.

[0208] It should be noted that the network-side device can configure CB-PreamblesPerSSB (CBRA Preambles Per SSB) and can also indicate SSB-perRACH-OccasionAndCB-PreamblesPerSSB together.

[0209] In a possible example, the network side device configures polling mapping of RO numbers, that is, determines the RO number corresponding to a current RO that needs to be mapped according to the SSB period or mapping period, association period, association mode period, and SFN number.

[0210] Exemplarily, the above-mentioned SSB period is the SSB sending period, for example, 80ms, and all SSBs are sent every 80ms.

[0211] Exemplarily, the above mapping period is the time required to complete one round of SSB to RO mapping.

[0212] For example, the above association cycle is: within one association cycle, after completing one round of SSB to RO mapping, continue with the next round of mapping until the remaining RO is insufficient to complete one round of SSB to RO mapping.

[0213] Exemplarily, the above-mentioned SSB to RO association mode period may include one or more SSB-RO association periods.

[0214] Exemplarily, the network can configure a global index or number for the RO on all frequency domain units, with reference to Figure 5. In this way, for UEs that support different band combination capabilities, only some RO resources can be used. For example, UEs that support band B can only use RO 1-2 and can only choose to access SSBs mapped to RO 1-2. This will result in some SSBs not having corresponding RO mappings, and the UE cannot use these SSBs. The network can configure polling mapping of RO numbers. That is, a current RO number is determined based on the SSB period or mapping period, association period, association mode period, and SFN number. As an example, there are 6 SSBs mapped to RO 0-5 respectively. At time n, SSB1 is mapped to RO 0,...SSB 6 is mapped to RO 5. At time n+k, the mapping of SSB to RO is polled to SSB1 mapped to RO2, SSB2 mapped to RO 3, SSB6 mapped to RO1, k is determined according to the SSB period or mapping period, association period, association mode period, and SFN number or notified by the network. At time n+2k, the mapping of SSB to RO is polled to SSB1 mapped to RO5, SSB2 mapped to RO 0, SSB6 mapped to RO4. In this way, UE supporting band B can still access each SSB.

[0215] In a possible embodiment, the UEs may not be able to use all frequency domain units due to different capabilities. Therefore, the network side device may configure multiple sets of RO configurations and send them to the UEs. The UEs may obtain the multiple sets of RO configurations from the network side device and determine one set of RO configurations from the multiple sets of RO configurations according to the UE's own capabilities.

[0216] Optionally, in some embodiments of the present application, the above step 201 specifically includes step 201a and step 201b:

[0217] Step 201a: The UE receives at least one set of RO configuration from a network-side device.

[0218] In some embodiments of the present application, the network-side device may configure multiple sets of RO configurations according to the UE capability of the UE, that is, the frequency domain units supported by the UE.

[0219] In some embodiments of the present application, the UE may receive at least one set of RO configurations from a network-side device through signaling.

[0220] Step 201b: The UE determines a set of RO configurations from at least one set of RO configurations based on the UE capability information.

[0221] In some embodiments of the present application, the capability information of the UE includes frequency domain units supported by the UE.

[0222] In this way, the UE can use the RO on the appropriate frequency domain unit to send the SSB according to its own situation to perform random access, thereby improving the success rate of the UE's random access.

[0223] Optionally, in an embodiment of the present application, before the above step 202 "the UE determines, based on an SSB received on at least one frequency domain unit and a set of RO configurations, an available RO on at least one frequency domain unit corresponding to an SSB", the RO determination method provided by the present application further includes steps 401 and 402:

[0224] Step 401: The UE receives at least one SSB on at least one frequency domain unit.

[0225] In some embodiments of the present application, the network side device aggregates multiple frequency domain units, configures at least one SSB for them, and sends it to the UE.

[0226] Exemplarily, the network-side device may aggregate multiple non-contiguous intra-band and inter-band carriers.

[0227] In some embodiments of the present application, a UE in idle or deactivated state (UEIDLE / INACTIVATE) may broadcast necessary system information, such as the frequency bandwidth of each carrier, SCS, and PRACH resource, via one SSB in multiple frequency domain units. Based on the SSB and SIB information, the UE may select at least one UL carrier for initial access.

[0228] In this way, the common signaling overhead can be reduced, the load balance of each UL carrier can be achieved, the access delay can be reduced, the collision probability of random access can be reduced, and the network flexibility and energy efficiency can be improved.

[0229] Step 402: The UE determines an available RO corresponding to an SSB on at least one frequency domain unit according to a set of RO configurations and an SSB received on at least one frequency domain unit.

[0230] In this way, sending one SSB through multiple ROs is beneficial to improving system resource utilization and reducing latency.

[0231] Optionally, in some embodiments of the present application, the network-side device may further configure different RO resource sets for different scenarios.

[0232] Exemplarily, the network-side device may configure RO resource A for the UE establishing the initial RRC connection.

[0233] Exemplarily, the network side device can configure RO resource B for the connected (RRC_CONNETED) state UE. For example, the UE needs to establish uplink synchronization with a new cell, and the UE uplink is in a desynchronized state when downlink data arrives. When the uplink data arrives, the UE has no PUCCH resources for SR.

[0234] Exemplarily, the network-side device may configure RO resources C for the UE that recovers from beam failure.

[0235] Exemplarily, the network-side device may configure RO resources D for the RRC connection reestablishment UE.

[0236] Exemplarily, the network-side device may configure RO resources E for the UE that switches from RRC_INACTIVE to RRC_CONNETTED.

[0237] Exemplarily, the network-side device may configure RO resources F for the UE requesting other SI.

[0238] In some embodiments of the present application, the network-side device may use a paging short message to update the SIB message to notify the RO resource set of at least one UE.

[0239] In some embodiments of the present application, ROs on different frequency domain units can be configured for at least one of the above scenarios. For example, frequency domain unit A is configured with only RO resource A, frequency domain unit B is configured with only RO resource B, and so on.

[0240] Optionally, in some embodiments of the present application, the network side device may further configure different time domain units, such as different RO resource sets or RO resource numbers corresponding to time slots.

[0241] In some embodiments of the present application, the network side device may update the time domain and frequency domain resources of the RO through the SIB, for example, adding and releasing RO resources to achieve load balancing among ROs in different time units.

[0242] In some embodiments of the present application, SSBs may be mapped to ROs of the same type, for example, only to ROs located on UL subbands. This may be used for base stations or UEs that support full-duplex capabilities.

[0243] In some embodiments of the present application, the network side device may add SSB to other frequency domain units in the MIB, such as the SIB of BWP, carrier, or band, that is, including the mapping relationship of the Coreset carrying the SIB. The network side device may also transmit SIB information in other frequency domain units other than the frequency domain units transmitted by SSB, such as BWP, carrier, or band.

[0244] It should be noted that the method of the present application can be used for determining RO resources based on contention and non-contention, as well as determining resources for transmission of SRS, SDT, etc. in idld or inactive state.

[0245] The RO determination method provided in the embodiment of the present application may be executed by an RO determination device. In the embodiment of the present application, the RO determination device performing the RO determination method is taken as an example to illustrate the RO determination device provided in the embodiment of the present application.

[0246] The embodiment of the present application provides a RO determination device. As shown in FIG21 , the RO determination device 600 includes: an acquisition module 601 and a determination module 602, wherein:

[0247] The acquisition module 601 is configured to acquire a set of RO configurations. The RO configurations are determined based on RO configuration parameters and frequency domain unit configuration parameters. The set of RO configurations is used to configure at least one of the following:

[0248] at least one RO configuration on at least two frequency domain units,

[0249] at least one RO configuration on at least two frequency domain unit combinations related to the UE capabilities of the UE,

[0250] At least one independent RO configuration is configured on at least one frequency domain unit;

[0251] The determination module 602 is configured to determine an available RO on at least one frequency domain unit corresponding to an SSB based on an SSB received on at least one frequency domain unit and a set of RO configurations obtained by the acquisition module 601; wherein an RO configuration is used to configure at least one RO of a frequency domain unit.

[0252] In some embodiments of the present application, the RO configuration parameters include at least one of the following:

[0253] Frequency domain resources of RO;

[0254] Reference starting frequency of RO;

[0255] RO number;

[0256] RO's time domain resources;

[0257] The sequence length and SCS of the preamble sequence configured in each frequency domain unit in at least one frequency domain unit;

[0258] Each frequency domain unit in at least one frequency domain unit is configured with a frequency division multiplexing RO quantity.

[0259] In some embodiments of the present application, the RO configuration parameters include a reference starting frequency of the RO; the acquisition module 601 is further configured to acquire a frequency domain unit configuration parameter, which is used to determine the reference starting frequency of the RO.

[0260] In some embodiments of the present application, the frequency domain unit configuration parameters include:

[0261] a frequency reference point in the at least one frequency domain unit;

[0262] a frequency offset value of each frequency domain unit in the at least one frequency domain unit relative to the frequency reference point;

[0263] the SCS of each frequency domain unit in the at least one frequency domain unit;

[0264] a cyclic prefix of each frequency domain unit in the at least one frequency domain unit;

[0265] The RB and size of each frequency domain unit in the at least one frequency domain unit.

[0266] In some embodiments of the present application, the frequency domain reference point includes at least one of the following:

[0267] a frequency reference point of a frequency domain unit having no CD-SSB in the at least one frequency domain unit;

[0268] A common frequency reference point of a frequency domain unit in which there is no CD-SSB in at least one of the frequency domain units;

[0269] a predetermined frequency reference point in the at least one frequency domain unit;

[0270] A common frequency reference point in the at least one frequency domain unit.

[0271] In some embodiments of the present application, the determination module 601 is specifically configured to:

[0272] sorting at least one RO based on a predefined sorting rule and a set of RO configurations to obtain a first sequence;

[0273] Based on the first sequence and the mapping rule, an available RO corresponding to the one SSB on the at least one frequency domain unit is determined.

[0274] In some embodiments of the present application, the predefined sorting rule includes: sorting all ROs according to the increasing index of the frequency domain resource in each RO configuration in a set of RO configurations;

[0275] In some embodiments of the present application, the mapping rule includes at least one of the following:

[0276] uniformly mapping at least one SSB to at least one RO on at least two frequency domain units in a set of RO configurations;

[0277] Mapping at least one SSB to an RO on a first frequency domain unit in a set of RO configurations, where the first frequency domain unit is a combination of frequency domain units in the at least two frequency domain units, and the first frequency domain unit is determined based on a UE capability of the UE;

[0278] One SSB is mapped to an RO on at least one frequency domain unit in a set of RO configurations.

[0279] In some embodiments of the present application, the acquisition module 601 is specifically used to receive at least one set of RO configurations from a network-side device; the determination module 602 is further used to determine a set of RO configurations from the at least one set of RO configurations based on the capability information of the UE, where the capability information of the UE includes the frequency domain units supported by the UE.

[0280] In some embodiments of the present application, in combination with Figure 21, as shown in Figure 22, the above-mentioned RO determination device 600 also includes: a receiving module 603; the receiving module 603 is used to receive at least one SSB on at least one frequency domain unit before determining an available RO on at least one frequency domain unit corresponding to an SSB based on an SSB received on at least one frequency domain unit and a set of RO configurations; the determination module 602 is further used to determine an available RO corresponding to the SSB on the at least one frequency domain unit based on a set of RO configurations obtained by the acquisition module 601 and an SSB received on at least one frequency domain unit.

[0281] In the RO determination apparatus provided in an embodiment of the present application, a set of RO configurations is obtained. The RO configurations are determined based on RO configuration parameters and frequency domain unit configuration parameters. The set of RO configurations is used to configure at least one of the following: at least one RO configuration on at least two frequency domain units, at least one RO configuration on a combination of at least two frequency domain units related to the UE's UE capabilities, or at least one independent RO configuration on at least one frequency domain unit. Based on an SSB received on at least one frequency domain unit and the set of RO configurations, an available RO on at least one frequency domain unit corresponding to an SSB is determined. An RO configuration is used to configure at least one RO on a frequency domain unit. In this solution, the set of RO configurations obtained by the UE is the RO configuration on at least one frequency domain unit. The UE can determine the available RO using only one SSB and the RO configurations on multiple frequency domain units. This eliminates the need for the network to independently send an SSB for each frequency domain unit, reducing unnecessary signaling overhead and efficiency loss. Furthermore, in this embodiment of the present application, the UE can also initiate random access using available ROs on different frequency domain units, thereby reducing the probability of collision during random access and improving the success rate of random access.

[0282] The RO determination 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. Other devices can include servers, network attached storage (NAS), etc., and are not specifically limited in the embodiments of the present application.

[0283] The RO determination device provided in the embodiment of the present application can implement each process implemented in the above RO determination method embodiment and achieve the same technical effect. To avoid repetition, it will not be described here.

[0284] The RO configuration method provided in the embodiment of the present application can be executed by an RO configuration device. In the embodiment of the present application, the RO configuration device provided in the embodiment of the present application is described by taking the RO configuration device executing the RO configuration method as an example.

[0285] The embodiment of the present application provides an RO configuration device, as shown in FIG23 , the RO configuration device 700 includes: a configuration module 701 , a sending module 702 , and a creation module 703 ;

[0286] Configuration module 701 is used to configure a set of RO configurations, where the RO configurations are determined based on RO configuration parameters and frequency domain unit configuration parameters. The set of RO configurations is used to configure at least one of the following:

[0287] at least one RO configuration on at least two frequency domain units,

[0288] at least one RO configuration on at least two frequency domain unit combinations related to UE capabilities of the UE,

[0289] At least one independent RO configuration is configured on at least one frequency domain unit;

[0290] A sending module 702 is used to send a set of RO configurations;

[0291] The sending module 702 is further configured to send at least one SSB on at least one frequency domain unit;

[0292] Establishing module 703, used to establish a mapping relationship between the above SSB and a set of RO configurations;

[0293] One RO configuration is used to configure at least one RO of one frequency domain unit.

[0294] In some embodiments of the present application, the sending module 702 is further configured to send frequency domain unit configuration parameters to the UE before the configuration module 701 configures a set of RO configurations;

[0295] The frequency domain unit configuration parameters include at least one of the following:

[0296] a frequency reference point in the at least one frequency domain unit;

[0297] a frequency offset value of each frequency domain unit in the at least one frequency domain unit relative to the frequency reference point;

[0298] the SCS of each frequency domain unit in the at least one frequency domain unit;

[0299] a cyclic prefix of each frequency domain unit in the at least one frequency domain unit;

[0300] The starting RB and size of each frequency domain unit in the at least one frequency domain unit.

[0301] In some embodiments of the present application, the frequency domain reference point includes at least one of the following:

[0302] a frequency reference point of a frequency domain unit having no CD-SSB in the at least one frequency domain unit;

[0303] A common frequency reference point of a frequency domain unit in which there is no CD-SSB in at least one of the frequency domain units;

[0304] a predetermined frequency reference point in the at least one frequency domain unit;

[0305] A common frequency reference point in the at least one frequency domain unit.

[0306] In the RO configuration device provided in an embodiment of the present application, a set of RO configurations is configured. The RO configurations are determined based on RO configuration parameters and frequency domain unit configuration parameters. The set of RO configurations is used to configure at least one of the following: at least one RO configuration on at least two frequency domain units, at least one RO configuration on a combination of at least two frequency domain units related to the UE capabilities of the UE, and at least one independent RO configuration on at least one frequency domain unit; transmit the set of RO configurations; transmit at least one SSB on at least one frequency domain unit and establish a mapping relationship between the SSB and the set of RO configurations; wherein one RO configuration is used to configure at least one RO for one frequency domain unit. In this solution, the RO configuration device configures the RO configurations on at least two frequency domain units based on one SSB, thereby eliminating the need for the RO configuration device to independently configure an SSB for each frequency domain unit, thereby reducing unnecessary overhead and efficiency loss during random access.

[0307] The RO configuration 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 network-side device. For example, the network-side device can include, but is not limited to, the types of network devices listed above, and is not specifically limited in the embodiments of the present application.

[0308] The RO configuration device provided in the embodiment of the present application can implement each process implemented in the above-mentioned RO configuration method embodiment and achieve the same technical effect. To avoid repetition, it will not be described here.

[0309] As shown in Figure 24, an embodiment of the present application further provides a communication device 800, including a processor 801 and a memory 802. The memory 802 stores a program or instruction that can be executed on the processor 801. For example, when the communication device 800 is a terminal, the program or instruction, when executed by the processor 801, implements the various steps of the above-mentioned RO determination method embodiment and can achieve the same technical effect. When the communication device 800 is a network-side device, the program or instruction, when executed by the processor 801, implements the various steps of the above-mentioned RO configuration method embodiment and can achieve the same technical effect. To avoid repetition, they are not further described here.

[0310] The embodiment of 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 used to run a program or instruction to implement the steps in the method embodiment shown in Figure 25. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment. The various implementation processes and implementation methods of the above-mentioned method embodiment are applicable to this terminal embodiment and can achieve the same technical effects. Specifically, Figure 25 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application. It should be noted that the UE involved in the embodiment of the present application can be a terminal.

[0311] The terminal 100 includes but is not limited to: a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109 and at least some of the components of the processor 110.

[0312] Those skilled in the art will appreciate that the terminal 100 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 110 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG25 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.

[0313] It should be understood that in an embodiment of the present application, the input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042, and the graphics processor 1041 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 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 107 includes a touch panel 1071 and at least one of other input devices 1072. The touch panel 1071 is also called a touch screen. The touch panel 1071 may include two parts: a touch detection device and a touch controller. Other input devices 1072 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 a joystick, which will not be repeated here.

[0314] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 101 may transmit the data to the processor 110 for processing. Furthermore, the RF unit 101 may send uplink data to the network-side device. Typically, the RF unit 101 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0315] The memory 109 can be used to store software programs or instructions and various data. The memory 109 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 109 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 109 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0316] Processor 110 may include one or more processing units. Optionally, processor 110 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 110.

[0317] The processor 110 is configured to obtain a set of RO configurations, where the RO configurations are determined based on RO configuration parameters and frequency domain unit configuration parameters, and the set of RO configurations is configured to configure at least one of the following:

[0318] at least one RO configuration on at least two frequency domain units,

[0319] at least one RO configuration on at least two frequency domain unit combinations related to the UE capabilities of the UE,

[0320] At least one independent RO configuration is configured on at least one frequency domain unit;

[0321] The processor 110 is further configured to determine an available RO on at least one frequency domain unit corresponding to an SSB based on an SSB received on at least one frequency domain unit and a set of RO configurations; wherein an RO configuration is used to configure at least one RO of a frequency domain unit.

[0322] In some embodiments of the present application, the RO configuration parameters include at least one of the following:

[0323] Frequency domain resources of RO;

[0324] Reference starting frequency of RO;

[0325] RO number;

[0326] RO's time domain resources;

[0327] The sequence length and SCS of the preamble sequence configured in each frequency domain unit in at least one frequency domain unit;

[0328] Each frequency domain unit in at least one frequency domain unit is configured with a frequency division multiplexing RO quantity.

[0329] In some embodiments of the present application, the RO configuration parameters include a reference starting frequency of the RO; the acquisition module 601 is further configured to acquire a frequency domain unit configuration parameter, which is used to determine the reference starting frequency of the RO.

[0330] In some embodiments of the present application, the frequency domain unit configuration parameters include:

[0331] a frequency reference point in the at least one frequency domain unit;

[0332] a frequency offset value of each frequency domain unit in the at least one frequency domain unit relative to the frequency reference point;

[0333] the SCS of each frequency domain unit in the at least one frequency domain unit;

[0334] a cyclic prefix of each frequency domain unit in the at least one frequency domain unit;

[0335] The RB and size of each frequency domain unit in the at least one frequency domain unit.

[0336] In some embodiments of the present application, the frequency domain reference point includes at least one of the following:

[0337] a frequency reference point of a frequency domain unit having no CD-SSB in the at least one frequency domain unit;

[0338] A common frequency reference point of a frequency domain unit in which there is no CD-SSB in at least one of the frequency domain units;

[0339] a predetermined frequency reference point in the at least one frequency domain unit;

[0340] A common frequency reference point in the at least one frequency domain unit.

[0341] In some embodiments of the present application, the processor 110 is specifically configured to:

[0342] sorting at least one RO based on a predefined sorting rule and a set of RO configurations to obtain a first sequence;

[0343] Based on the first sequence and the mapping rule, an available RO corresponding to the one SSB on the at least one frequency domain unit is determined.

[0344] In some embodiments of the present application, the predefined sorting rule includes: sorting all ROs according to the increasing index of the frequency domain resource in each RO configuration in a set of RO configurations;

[0345] In some embodiments of the present application, the mapping rule includes at least one of the following:

[0346] uniformly mapping at least one SSB to at least one RO on at least two frequency domain units in a set of RO configurations;

[0347] Mapping at least one SSB to an RO on a first frequency domain unit in a set of RO configurations, where the first frequency domain unit is a combination of frequency domain units in the at least two frequency domain units, and the first frequency domain unit is determined based on a UE capability of the UE;

[0348] One SSB is mapped to an RO on at least one frequency domain unit in a set of RO configurations.

[0349] In some embodiments of the present application, the radio frequency unit 101 is configured to receive at least one set of RO configurations from a network-side device; the processor 110 is further configured to determine the set of RO configurations from the at least one set of RO configurations based on the capability information of the UE, where the capability information of the UE includes the frequency domain units supported by the UE.

[0350] In some embodiments of the present application, the radio frequency unit 101 is configured to receive at least one SSB on at least one frequency domain unit before determining, based on an SSB received on the at least one frequency domain unit and a set of RO configurations, an available RO on at least one frequency domain unit corresponding to an SSB; the processor 110 is further configured to determine, based on a set of RO configurations and an SSB received on the at least one frequency domain unit, an available RO corresponding to an SSB on the at least one frequency domain unit.

[0351] In a terminal provided in an embodiment of the present application, a set of RO configurations is obtained. The RO configurations are determined based on RO configuration parameters and frequency domain unit configuration parameters. The set of RO configurations is used to configure at least one of the following: at least one RO configuration on at least two frequency domain units, at least one RO configuration on a combination of at least two frequency domain units related to the UE's capabilities, and at least one independent RO configuration on at least one frequency domain unit. The UE determines, based on an SSB received on at least one frequency domain unit and the set of RO configurations, an available RO on at least one frequency domain unit corresponding to an SSB. An RO configuration is used to configure at least one RO on a frequency domain unit. In this solution, the set of RO configurations obtained by the UE is the RO configuration on at least one frequency domain unit. The UE can determine the available RO using only one SSB and the RO configurations on multiple frequency domain units. This eliminates the need for the network to independently send an SSB for each frequency domain unit, reducing unnecessary signaling overhead and efficiency loss. In addition, in an embodiment of the present application, the UE can also initiate random access using available ROs on different frequency domain units, thereby reducing the probability of collision during the random access process and improving the success rate of random access.

[0352] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment Figures 1 to 20, and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0353] 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 FIG25 . 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.

[0354] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 26, the network-side device 900 includes an antenna 901, a radio frequency device 902, a baseband device 903, a processor 904, and a memory 905. Antenna 901 is connected to radio frequency device 902. In the uplink direction, radio frequency device 902 receives information via antenna 901 and sends the received information to baseband device 903 for processing. In the downlink direction, baseband device 903 processes the information to be transmitted and sends it to radio frequency device 902. Radio frequency device 902 processes the received information and then sends it through antenna 901.

[0355] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 903 , which includes a baseband processor.

[0356] The baseband device 903 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 26, one of which is, for example, a baseband processor, which is connected to the memory 905 through a bus interface to call the program in the memory 905 and execute the network device operations shown in the above method embodiment.

[0357] The network side device may further include a network interface 906, which is, for example, a Common Public Radio Interface (CPRI).

[0358] Specifically, the network side device 900 of the embodiment of the present application also includes: instructions or programs stored in the memory 905 and can be run on the processor 904. The processor 904 calls the instructions or programs in the memory 905 to execute the methods executed by the modules shown in Figures 16 to 18 and achieve the same technical effects. To avoid repetition, they will not be repeated here.

[0359] The present application also provides a readable storage medium having a program or instruction stored thereon. When the program or instruction is executed by a processor, the program or instruction implements each process of the embodiment of the above-mentioned RO determination method, or the embodiment of the above-mentioned RO configuration method, and can achieve the same technical effect. To avoid repetition, it is not repeated here.

[0360] 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.

[0361] An embodiment of the present application further provides a chip, comprising 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 various processes of the embodiment of the above-mentioned RO determination method, or to implement the various processes of the embodiment of the above-mentioned RO configuration method, and to achieve the same technical effects. To avoid repetition, these are not described herein.

[0362] 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.

[0363] The present application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the embodiment of the above-mentioned RO determination method, or the various processes of the embodiment of the above-mentioned RO configuration method, and can achieve the same technical effects. To avoid repetition, they are not described here.

[0364] An embodiment of the present application further provides a communication system, including: a terminal and a network-side device, wherein the terminal can be used to execute the steps of the RO determination method described above, and the network-side device can be used to execute the steps of the RO configuration method described above.

[0365] 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.

[0366] 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.

[0367] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A method for determining a random access opportunity (RO), comprising: The user equipment UE obtains a set of RO configurations, where the RO configurations are determined based on RO configuration parameters and frequency domain unit configuration parameters, and the set of RO configurations are used to configure at least one of the following: at least one RO configuration on at least two frequency domain units, at least one RO configuration on at least two frequency domain unit combinations related to UE capabilities of the UE, At least one independent RO configuration is configured on at least one frequency domain unit; The UE determines, according to a synchronization signal block SSB received on the at least one frequency domain unit and the set of RO configurations, an available RO on at least one frequency domain unit corresponding to the SSB; The one RO configuration is used to configure at least one RO of a frequency domain unit.

2. The method according to claim 1, wherein: The RO configuration parameters include at least one of the following: Frequency domain resources of RO; Reference starting frequency of RO; RO number; Time domain resources of RO; The sequence length and subcarrier spacing SCS of the preamble sequence configured in each frequency domain unit in the at least one frequency domain unit; Each frequency domain unit in the at least one frequency domain unit is configured with a frequency division multiplexing RO quantity.

3. The method according to claim 2, wherein: The RO configuration parameter includes a reference starting frequency of the RO. Before the UE acquires a set of RO configurations, the method further includes: The UE acquires a frequency domain unit configuration parameter, where the frequency domain unit configuration parameter is used to determine a reference starting frequency of the RO.

4. The method according to claim 3, wherein: The frequency domain unit configuration parameters include: a frequency reference point in the at least one frequency domain unit; A frequency offset value of each frequency domain unit in the at least one frequency domain unit relative to the frequency reference point; an SCS of each frequency domain unit in the at least one frequency domain unit; A cyclic prefix of each frequency domain unit in the at least one frequency domain unit; A starting resource block (RB) and a size of each frequency domain unit in the at least one frequency domain unit.

5. The method according to claim 4, wherein: The frequency domain reference point includes at least one of the following: There is no frequency reference point of a frequency domain unit of a cell definition synchronization signal block CD-SSB in the at least one frequency domain unit; A common frequency reference point of a frequency domain unit in which there is no cell definition synchronization signal block CD-SSB in the at least one frequency domain unit; a predetermined frequency reference point in the at least one frequency domain unit; A common frequency reference point in the at least one frequency domain unit.

6. The method according to claim 2, wherein: The UE determines, according to an SSB received on the at least one frequency domain unit and the set of RO configurations, an available RO on at least one frequency domain unit corresponding to the SSB, including: The UE sorts the at least one RO based on a predefined sorting rule and the set of RO configurations to obtain a first sequence; The UE determines, based on the first sequence and mapping rule, an available RO corresponding to the one SSB on the at least one frequency domain unit.

7. The method according to claim 6, wherein: The predefined sorting rules include: All ROs are sorted in ascending order according to the index of the frequency domain resource in each RO configuration in the set of RO configurations.

8. The method according to claim 6, wherein: The mapping rule includes at least one of the following: uniformly mapping the at least one SSB to at least one RO on at least two frequency domain units in the set of RO configurations; Mapping the at least one SSB to an RO on a first frequency domain unit in the set of RO configurations, where the first frequency domain unit is a combination of frequency domain units in the at least two frequency domain units, and the first frequency domain unit is determined based on a UE capability of the UE; The one SSB is respectively mapped to the RO on at least one frequency domain unit in the set of RO configurations.

9. The method according to any one of claims 1 to 8, wherein: The UE obtains a set of RO configurations, including: The UE receives at least one set of RO configuration from a network side device; The UE determines the set of RO configurations from the at least one set of RO configurations based on capability information of the UE, where the capability information of the UE includes frequency domain units supported by the UE.

10. The method according to claim 8, wherein: Before the UE determines, according to an SSB received on the at least one frequency domain unit and the set of RO configurations, an available RO on at least one frequency domain unit corresponding to the SSB, the method further includes: The UE receives at least one SSB on the at least one frequency domain unit; The UE determines, according to the set of RO configurations and an SSB received on at least one frequency domain unit, an available RO corresponding to the SSB on the at least one frequency domain unit.

11. A RO configuration method, comprising: The network side device configures a set of RO configurations, where the RO configurations are determined based on RO configuration parameters and frequency domain unit configuration parameters, and the set of RO configurations are used to configure at least one of the following: at least one RO configuration on at least two frequency domain units, at least one RO configuration on at least two frequency domain unit combinations related to UE capabilities of the UE, At least one independent RO configuration is configured on at least one frequency domain unit; The network side device sends a set of RO configurations; The network side device sends at least one SSB on at least one frequency domain unit and establishes a mapping relationship between the SSB and the set of RO configurations; The one RO configuration is used to configure at least one RO of a frequency domain unit.

12. The method according to claim 11, wherein: Before the network side device configures a set of RO configurations, the method further includes: The network side device sends a frequency domain unit configuration parameter to the UE; The frequency domain unit configuration parameters include at least one of the following: a frequency reference point in the at least one frequency domain unit; A frequency offset value of each frequency domain unit in the at least one frequency domain unit relative to the frequency reference point; an SCS of each frequency domain unit in the at least one frequency domain unit; a cyclic prefix of each frequency domain unit in the at least one frequency domain unit; A starting RB and a size of each frequency domain unit in the at least one frequency domain unit.

13. The method according to claim 12, wherein: The frequency domain reference point includes at least one of the following: There is no frequency reference point of a frequency domain unit of CD-SSB in the at least one frequency domain unit; A common frequency reference point of a frequency domain unit without a CD-SSB in the at least one frequency domain unit; a predetermined frequency reference point in the at least one frequency domain unit; A common frequency reference point in the at least one frequency domain unit.

14. A RO determination device, comprising: Get module and determine module; The acquisition module is used to acquire a set of RO configurations, where the RO configurations are determined based on RO configuration parameters and frequency domain unit configuration parameters, and the set of RO configurations are used to configure at least one of the following: at least one RO configuration on at least two frequency domain units, at least one RO configuration on at least two frequency domain unit combinations related to UE capabilities of the UE, At least one independent RO configuration is configured on at least one frequency domain unit; The determining module is configured to determine, according to an SSB received on the at least one frequency domain unit and the set of RO configurations acquired by the acquiring module, an available RO on the at least one frequency domain unit corresponding to the one SSB; The one RO configuration is used to configure at least one RO of a frequency domain unit.

15. A RO configuration device, comprising: Configure module, send module and build module; The configuration module is used to configure a set of RO configurations, where the RO configurations are determined based on RO configuration parameters and frequency domain unit configuration parameters, and the set of RO configurations are used to configure at least one of the following: at least one RO configuration on at least two frequency domain units, at least one RO configuration on at least two frequency domain unit combinations related to UE capabilities of the UE, At least one independent RO configuration is configured on at least one frequency domain unit; The sending module is used to send a set of RO configurations; The sending module is further used to send at least one SSB on at least one frequency domain unit; The establishing module is used to establish a mapping relationship between the SSB and the set of RO configurations; The one RO configuration is used to configure at least one RO of a frequency domain unit.

16. A user equipment UE, 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 RO determination method according to any one of claims 1 to 10 are implemented.

17. 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 RO configuration method according to any one of claims 11 to 14 are implemented.

18. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the RO determination method according to any one of claims 1 to 10, or implements the steps of the RO configuration method according to any one of claims 11 to 14.

19. A chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the RO determination method according to any one of claims 1 to 10, or to implement the steps of the RO configuration method according to any one of claims 11 to 14.

20. A computer program product, wherein the program product is executed by at least one processor to implement the RO determination method according to any one of claims 1 to 10, or implement the steps of the RO configuration method according to any one of claims 11 to 14.

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