RO (Reverse Osmosis) determination method, RO configuration method, device, equipment and medium

Abstract

Disclosed are a random access occasion (RO) determination method, an RO configuration method, an apparatus, a device and a medium, belonging to the technical field of communications, the RO determination method of the embodiment of the present application comprising: a user equipment (UE) obtaining a set of RO configuration, the RO configuration being determined based on an RO configuration parameter and a frequency domain unit configuration parameter, one 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 a combination of at least two frequency domain units related to the UE capability of the UE, and at least one independent RO configuration on at least one frequency domain unit; according to a synchronization signal block SSB received on the at least one frequency domain unit and the set of RO configurations, the UE determines an available RO on the at least one frequency domain unit corresponding to the SSB; wherein one RO configuration is used for configuring at least one RO of one frequency domain unit.

Description

Technical Field

[0001] 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

[0002] 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 (Physical Random Access Channel Occasion, RO) corresponding to a synchronization signal block (SSB) with a good signal from multiple synchronization signal blocks (SSB) 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.

[0003] Generally, a UE can aggregate multiple cells, i.e., carrier aggregation, to increase bandwidth. However, since each serving cell is managed independently, i.e., each serving cell is configured with independent control signaling or common signaling, such as SSB, common control signaling, this will bring unnecessary overhead and efficiency loss.

[0004] Thus, how to reduce unnecessary overhead and efficiency loss during random access is a technical problem to be solved urgently in this application. Summary of the invention

[0005] 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 in a random access process.

[0006] 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, 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 capability of the UE, and at least one independent RO configuration configured on at least one frequency domain unit; the UE determines 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 the set of RO configurations; wherein one RO configuration is used to configure at least one RO of a frequency domain unit.

[0007] Second aspect, a method for RO configuration is provided, which is executed by a network-side device. The method includes: 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 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 at least two combinations of frequency-domain units related to the UE capability of the UE, and at least one independent RO configuration 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; where one RO configuration is used to configure at least one RO of one frequency-domain unit.

[0008] Third aspect, a device for RO determination is provided. The device includes: an acquisition module and a determination 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 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 at least two combinations of frequency-domain units related to the UE capability of the UE, and at least one independent RO configuration configured on at least one frequency-domain unit; the determination module is used to determine available ROs on at least one frequency-domain unit corresponding to an SSB according to an SSB received on at least one frequency-domain unit and the set of RO configurations acquired by the acquisition module; where one RO configuration is used to configure at least one RO of one frequency-domain unit.

[0009] Fourth aspect, a device for RO configuration is provided. The device includes: a configuration module, a sending module, and an establishing 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 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 at least two combinations of frequency-domain units related to the UE capability 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 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; where one RO configuration is used to configure at least one RO of one frequency-domain unit.

[0010] Fifth aspect, a terminal is provided. The terminal includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0011] In a sixth aspect, a UE is provided, which includes a processor and a communication interface. The processor is configured to determine available ROs 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. One RO configuration is used to configure at least one RO of a frequency-domain unit. The communication interface 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. 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 at least two combinations of 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.

[0012] In a seventh aspect, a network-side device is provided. The network-side device includes a processor and a memory. The memory stores a program or instructions that can run on the processor. When the program or instructions are executed by the processor, the steps of the method described in the first aspect are implemented.

[0013] In an eighth aspect, a network-side device is provided, which includes a processor and a communication interface. The processor is configured 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: at least one RO configuration on at least two frequency-domain units, at least one RO configuration on at least two combinations of 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 communication interface is configured 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 the set of RO configurations. One RO configuration is used to configure at least one RO of a frequency-domain unit.

[0014] In a ninth aspect, a readable storage medium is provided. A program or instructions are stored on the readable storage medium. When the program or instructions are 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.

[0015] In a tenth aspect, a wireless communication system is provided, which includes a terminal and a network-side device. 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.

[0016] In an eleventh aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run a program or instructions to implement the method described in the first aspect, or implement the method described in the second aspect.

[0017] In a twelfth aspect, there is provided a computer program / program product, which is stored in a storage medium and is executed by at least one processor to implement the steps of the method as described in the first aspect.

[0018] In an embodiment of the present application, the 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 at least two frequency domain unit combinations related to the UE's UE capabilities, and at least one independent RO configuration configured on at least one frequency domain unit; the UE determines available ROs 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; wherein, one RO configuration is used to configure at least one RO of 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 ROs only through one SSB and the RO configurations on multiple frequency domain units, so that the network does not need to independently send an SSB for each frequency domain unit, reducing unnecessary signaling overhead and efficiency loss. In addition, in the embodiment of the present application, the UE can also initiate random access through the available ROs on different frequency domain units, thereby reducing the collision probability during the random access process and improving the success rate of random access. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a possible schematic structural diagram of a communication system involved in an embodiment of the present application;

[0020] Figure 2 is a schematic diagram of the mapping from SSB to RO on a carrier in the prior art;

[0021] Figure 3 is one of the schematic diagrams of the relationship between a serving cell, BWP, and frequency domain units provided by an embodiment of the present application;

[0022] Figure 4 is another schematic diagram of the relationship between a serving cell, BWP, and frequency domain units provided by an embodiment of the present application;

[0023] Figure 5 is one of the schematic flowcharts of a method for determining RO provided by an embodiment of the present application;

[0024] Figure 6 is the schematic flowchart of a method for configuring RO provided by an embodiment of the present application;

[0025] Figure 7 is one of the schematic diagrams for configuring RO configurations in a method for determining RO provided by an embodiment of the present application;

[0026] Figure 8 It is the second schematic diagram of configuring RO configuration in a RO determination method provided by an embodiment of the present application;

[0027] Figure 9 It is the third schematic diagram of configuring RO configuration in a RO determination method provided by an embodiment of the present application;

[0028] Figure 10 It is the second schematic diagram of the flowchart of a RO determination method provided by an embodiment of the present application;

[0029] Figure 11 It is the third schematic diagram of the flowchart of a RO determination method provided by an embodiment of the present application;

[0030] Figure 12 It is a schematic diagram of the RO starting frequency position when the frequency domain unit is a carrier in a RO determination method provided by an embodiment of the present application;

[0031] Figure 13 It is a schematic diagram of configuring a common frequency reference point in a RO determination method provided by an embodiment of the present application;

[0032] Figure 14 It is a schematic diagram of the RO starting frequency position when the frequency domain unit is a band in a RO determination method provided by an embodiment of the present application;

[0033] Figure 15 It is a schematic diagram of RO when the SSB of the frequency domain unit can be mapped to all the indicated frequency domain units in a RO determination method provided by an embodiment of the present application;

[0034] Figure 16 It is a schematic diagram of RO when the SSB of the frequency domain unit can be mapped to some of the indicated frequency domain units in a RO determination method provided by an embodiment of the present application;

[0035] Figure 17 It is a schematic diagram of the mapping relationship between SSB and RO in a RO determination method provided by an embodiment of the present application;

[0036] Figure 18 It is a schematic diagram of the mapping relationship between SSB and RO in a RO determination method provided by an embodiment of the present application;

[0037] Figure 19 It is a schematic diagram of the mapping relationship between SSB and RO in a RO determination method provided by an embodiment of the present application;

[0038] Figure 20 It is a schematic diagram of the mapping relationship between SSB and RO in a RO determination method provided by an embodiment of the present application;

[0039] Figure 21One of the schematic structural diagrams of an RO determination device provided by an embodiment of the present application;

[0040] Figure 22 Another schematic structural diagram of an RO determination device provided by an embodiment of the present application;

[0041] Figure 23 Schematic structural diagram of an RO configuration device provided by an embodiment of the present application;

[0042] Figure 24 Schematic hardware structure diagram of a communication device provided by an embodiment of the present application;

[0043] Figure 25 Schematic hardware structure diagram of a terminal provided by an embodiment of the present application;

[0044] Figure 26 Schematic hardware structure diagram of a network - side device provided by an embodiment of the present application. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0046] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances 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 category, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0047] The following explains the technical terms related to the embodiments of the present application:

[0048] 1), Random access resource selection

[0049] In the prior art, the random access process can be a contention-based random access process or a non-contention-based random access process. The random access process can be a four-step random access process, also known as a Type-1 random access process, or a two-step random access process, also known as a Type-2 random access process.

[0050] In the contention-based four-step random access process (Random Access Channel, RACH), the UE first sends Message 1 (Msg1) to the network device, which contains a preamble; after detecting the preamble, the network device sends Message 2 (Msg2), i.e., a Random Access Response (RAR) message, which contains the number of the preamble detected by the network device and the uplink radio resources allocated to the UE for sending Msg3; after receiving Msg2, if the UE confirms that at least one of the preamble numbers carried in Msg2 is the same as the preamble number it sent, it sends Msg3 containing contention resolution information according to the resources indicated by the RAR; after receiving Msg3, the network device sends Msg4 containing contention resolution information; after receiving Msg4, if the UE confirms that the contention resolution information is the same as what it sent in Msg3, the four-step random access is completed.

[0051] The network device includes uplink grant (UL grant) information in the RAR to indicate the scheduling information of the Msg3 Physical Uplink Shared Channel (PUSCH), and also includes information such as RAP ID (RACH preamble ID), Transmission Configuration - Radio Network Temporary Identifier (TC-RNTI), and Timing Advance (TA). If the network device does not receive the Msg3 PUSCH, it can schedule the retransmission of the Msg3 PUSCH in the PDCCH scrambled with the TC-RNTI.

[0052] For the competitive 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, that is, RO resources. This situation can be understood as the preamble conflict of UEs. In this case, different UEs will receive the same RAR, and then different UEs will perform the transmission of MSG3 PUSCH according to the scheduling information in the RAR UL grant. The network can only decode the PUSCH (including the contention resolution information) sent by one UE on a Msg3 PUSCH scheduling resource. Therefore, the network will include the contention resolution information received in Msg3 in Msg4. If the contention resolution information in the Msg4 received by the UE matches the contention resolution information sent by the UE in the Msg3 PUSCH, the UE considers the contention resolution successful. If they do not match, the contention resolution is considered unsuccessful.

[0053] If the contention resolution is unsuccessful, the UE re-selects the RACH transmission resource, performs the PRACH transmission, and makes the next random access attempt.

[0054] In NR Rel-16, the two-step random access process 2-step RACH is introduced. The first step is that the UE sends MsgA to the network device. After receiving MsgA, the network device sends a MsgB message to the UE. If the UE does not receive MsgB within a certain time, the UE will accumulate the counter for counting the number of MsgA transmissions and re-send MsgA. If the counter for counting the number of MsgA transmissions reaches a certain threshold, the UE will switch from the 2-step random access process to the 4-step random access process. MsgA includes a MsgA preamble part and a 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 resource associated with the MsgA preamble and the RO. The MsgA PUSCH resource is a set of PUSCH resources configured for each PRACH slot, including time-frequency resources and DMRS resources.

[0055] 2) Selection of random access resources and mapping of Synchronization Signal Block (SSB) to Physical Random Access Channel Transmission Opportunity (PRACH Occasion, RO).

[0056] In NR, a cell can configure multiple frequency-division multiplexing (FDM) physical ROs at the time-domain position of a transmitted PRACH. At a certain moment, the number of ROs that can perform FDM can be: {1, 2, 4, 8}. At a certain moment, 8 RO resources are distributed on different frequencies.

[0057] The Preamble of random access can only be transmitted on the RO resources configured by the parameter PRACHConfigurationIndex. The random access preamble can only be transmitted on the frequency-domain resources configured by the parameter random access channel - frequency-division multiplexing (PRACH-Frequency Division Multiplexing, PRACH-FDM). The PRACH frequency-domain resource is n RA ∈{0, 1,..., M - 1}, where M is equal to the higher-layer parameter prach-FDM. At the initial access, the PRACH frequency-domain resource n RA is numbered in ascending order starting from the RO resource with the lowest frequency in the initial active uplink bandwidth part, otherwise, the PRACH frequency-domain resource n RA is numbered in ascending order starting from the RO resource with the lowest frequency in the active uplink bandwidth part.

[0058] In NR, there is an association relationship, or mapping relationship, between the RO and the actually transmitted SSB. One SSB may be associated with multiple ROs, or multiple SSBs may be associated with 1 RO (in this case, different SSBs correspond to different Preamble codes). Usually, the base station can use different beams to transmit different SSBs, and the corresponding UE transmits 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 good signal according to the intensity of the received downlink beam / SSB, and performs Msg1 transmission. In this way, the network can determine the SSB selected by the UE according to 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 mapping from SSB to RO on the current carrier is as Figure 2 shown.

[0059] 3), 5G Initial Bandwidth Part (Initial Bandwidth Part, BWP) and CORESET#0

[0060] The initial downlink and uplink bandwidth parts, i.e., the Initial DL BWP and the initial UL BWP, are configured in the System Information Block 1 (SIB1). If the initial BWP is not configured, the default size of the initial BWP is the size of CORESET #0. The initial BWP is mainly used for the initial access process, such as the reception of SIB1, the reception of RAR and Msg4 during the random access process, and the transmission of preamble and Msg3.

[0061] 4) Flexible serving cell

[0062] The introduction of flexible cells enables flexible and efficient utilization of adjacent discontinuous spectra from the perspectives of L1 / L2 / L3 signaling, procedures, and cell management. It benefits UEs in both the CONNECTED state and the IDLE state, thereby improving the perceived data rate, energy saving, system capacity, and coverage for users. It also simplifies network management complexity and improves energy efficiency.

[0063] It is worth noting that the technologies described in the embodiments of this application are 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 this application are often used interchangeably, and the described technologies can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for illustrative purposes and uses NR terms in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th Generation (6G) communication system. th Generation, 6G) communication system.

[0064] Figure 1The block diagram of a wireless communication system to which the embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a 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, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home devices with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), a game console, a personal computer (PC), a teller machine or a self-service machine, etc. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be called a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip or a vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. Among them, the access network device can also be called a radio access network (RAN) device, a radio access network function or a radio access network unit. The access network device can include a base station, a wireless local area network (WLAN) access point (AP) 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, Transmission Reception Point (TRP), or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0065] The RO determination method, RO configuration method, device, equipment, and medium provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through some embodiments and their application scenarios.

[0066] The embodiments of the present application can be applied to two flexible cell deployment methods. Method 1: As Figure 3 shown, the same serving cell can communicate by aggregating multiple bands or multiple BWPs on multiple carriers. For example, Figure 3 bands 1 to 3 in Figure 4 shown. Method 2: As Figure 4 shown, the same serving cell communicates through a combined BWP (combined BWP), and this combined BWP aggregates frequency domain units on multiple bands or carriers with different frequencies.

[0067] Figure 5 The flowchart of a RO determination method provided by the embodiments of the present application is shown. As Figure 5 shown, the RO determination method may include the following steps 201 and 202:

[0068] Step 201: The UE obtains a set of RO configurations.

[0069] In some embodiments of the present application, the above RO configuration is determined based on RO configuration parameters and frequency domain unit configuration parameters.

[0070] Optionally, in some embodiments of the present application, the above RO configuration is configured by a network side device.

[0071] Further, in the embodiments of the present application, in combination with Figure 5 , such as Figure 6 shown, before step 201 above, the embodiments of the present application also provide a method for configuring RO. This method for configuring RO is executed by a network side device and specifically includes steps A1 to A3:

[0072] Step A1: The network side device configures a set of RO configurations.

[0073] In some embodiments of the present application, the above set of RO configurations is used to configure at least one of the following:

[0074] Configuration 1: At least one RO configuration on at least two frequency domain units,

[0075] Configuration 2: At least one RO configuration on at least two combinations of frequency domain units related to the UE capability of the UE,

[0076] Configuration 3: At least one independent RO configuration is configured on at least one frequency domain unit.

[0077] Step A2: The network side device sends a set of RO configurations.

[0078] 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 the set of RO configurations.

[0079] In some embodiments of the present application, the above RO configuration parameters include at least one of the following:

[0080] The frequency domain resources of the RO;

[0081] The reference start frequency of the RO;

[0082] The RO number;

[0083] The time domain resources of the RO;

[0084] The sequence length and subcarrier spacing (SCS) of the preamble sequence configured in each frequency domain unit of at least one frequency domain unit;

[0085] The number of ROs configured with frequency division multiplexing in each frequency domain unit of at least one frequency domain unit.

[0086] In some embodiments of the present application, the above-mentioned RO time-domain resource determination can be determined according to at least one of the following in accordance with predefined rules: Preamble format, radio frame number, subframe number, starting symbol: l 0 , the number of prach slots in a subframe, the number of time-domain prach occasions in a slot: Prach duration:

[0087] Exemplarily, the RO symbol position is determined by the following formula

[0088]

[0089] Configure a value related to subcarriers for the network side.

[0090] In some embodiments of the present application, the above-mentioned reference starting frequency of the RO can be determined according to the above-mentioned frequency-domain unit configuration parameters.

[0091] In some embodiments of the present application, the sequence length and SCS of the preamble sequence configured in each of the above-mentioned at least one frequency-domain unit are configured by the network-side device.

[0092] In some embodiments of the present application, the sequence length and SCS of the preamble sequence configured in each frequency-domain unit can be used to determine the frequency-domain PRB occupied by the RO (calculated in terms of the granularity of the Physical Uplink Shared Channel (PUSCH)) through Table 1, and Table 1 is as follows:

[0093]

[0094] Table 1

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

[0096] In some embodiments of the present application, the network-side device can configure msg1-FDM for each frequency-domain unit, that is, configure the number of frequency-division multiplexed ROs for each of the above-mentioned at least one frequency-domain unit. In this way, the number of ROs in the frequency domain on a UL BWP can be determined, and further, the RO frequency-domain resources and quantities of all UL BWPs can be obtained.

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

[0098] In some embodiments of the present application, the above frequency domain units may include multiple types of frequency domain units. For example, BWP, carrier, Band, etc.

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

[0100] Exemplarily, one carrier may include multiple BWPs, and one band may include 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 on at least two frequency domain units according to the association relationship between the SSB and the RO.

[0102] Exemplarily, as Figure 7 shown in the figure, there are 3 bands in the figure, that is, the above frequency domain units, namely Band A, Band B, and Band C. Among them, Band A includes Carrier p, and Carrier p includes BWP i; Band B includes Carrier q, and Carrier q includes BWP j; Band C includes Carrier m, and Carrier m includes BWP k. The SSB is sent on Band C, and the SSB can have an association relationship with the ROs of the BWPs of all 3 bands. Therefore, the network side device maps the SSB to the ROs on the BWPs of the 3 bands, and the ROs of the BWPs of the 3 bands are numbered uniformly, that is, RO 0 to RO 5.

[0103] It should be noted that Figure 5 one set of RO configurations includes the RO configurations of the 3 BWPs on the 3 bands, including a total of 6 ROs from RO 0 to RO5. 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 side device configures the corresponding carriers on each band and configures the corresponding UL and DL BWPs for each carrier. The starting frequency of the RO with the smallest number of each UL BWP is determined relative to the starting frequency of the UL BWP. For the network to configure RO resources for the UE, it is necessary to configure the parameters of the frequency domain unit and the parameters of the RO first. For the frequency domain unit being BWP, the network needs to configure the parameters of the BWP and the RO parameters on the BWP.

[0105] It should be noted that the above Figure 7, taking the TDD system as an example, the FDD system is similar. The SSB is located in the DL BWP, and the RO is configured in the UL BWP. For simplicity, they are drawn in one figure. In the TDD system, the center frequencies of the UL and DL BWP are the same, and the bandwidths can be different. In the FDD system, the UL and DL BWP are independently configured.

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

[0107] Exemplarily, referring to Figure 7 , such as Figure 8 shown, assume 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 combination 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] Exemplarily, the network side device can map the SSB to the ROs on different band combinations of BWP according to different UE capabilities. The network side 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 side device notifies the UE:

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

[0113] For a UE supporting the combined capabilities of band B and band C, apply RO 0 and RO 1 on BWP j of band B, and RO 1 on BWP k of band C. The UE assumes that the SSB of the network side device is mapped to RO 0 and RO1, that is, RO 0 and RO 1 on BWP j, and RO2, that is, RO 1 on BWP k.

[0114] For a UE supporting the combined capabilities of band C, apply RO 2 on BWP k of band C. 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 according to the supported band combination capabilities for the different band combination capabilities and RO numbers notified by the network side device.

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

[0117] For example, referring to Figure 8 , 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 time, the network side device may notify the UE:

[0120] For a UE supporting the combined capabilities of band A and band C, apply RO 0 on BWP i of band A, and RO 3 on BWP k of band C. The UE assumes that the SSB of the network side device is mapped to RO 0, that is, RO0 on BWP i, and RO1, that is, RO 3 on BWP k.

[0121] For a UE supporting the combined capabilities of band B and band C, apply RO 1 and RO2 on BWP j of band B, and RO 4 on BWP k of band C. The UE assumes that the SSB of the network side device is mapped to RO 0 and RO1, that is, RO 1 and RO2 on BWP j, and RO2, that is, RO 4 on BWP k.

[0122] For a UE supporting the combined capabilities of band C, apply RO 5 on BWP k of band C. 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. The network-side device may configure an independent RO configuration on each of at least one frequency domain unit according to the same SSB.

[0125] Exemplarily, in combination with Figure 7 , such as Figure 9 shown, for BWP i, j, k, there are independent SSB-RO mappings respectively. The UE can select an RO on any one of the BWPs to initiate random access.

[0126] Optionally, in some embodiments of the present application, in combination with Figure 5 , such as Figure 10 shown, before the above step 201, the RO determination method provided by the embodiments 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 above frequency domain unit configuration parameters are used to determine the reference start frequency of the RO.

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

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

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

[0132] The SCS of each frequency domain unit in at least one frequency domain unit;

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

[0134] The starting resource block (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 above frequency domain reference points include at least one of the following:

[0136] The frequency reference point of the frequency domain unit without a Cell Defining SSB (CD-SSB) in at least one frequency domain unit;

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

[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 embodiments of the present application, in combination with Figure 10 , such as Figure 11 shown, 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 the frequency domain unit configuration parameters sent from the network side device.

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

[0144] In a possible example, when the frequency domain unit type is BWP, even if the CD-SSB is not in a configuration or the indicated BWP, that is, 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 for the case where 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" can be defined as a carrier or band on which no CD-SSB is carried.

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

[0148] In one example, for the DL BWP where the SSB is located and the DL BWP of the same carrier, that is, the frequency reference point of the RO on the frequency domain unit where the SSB is located, namely the carrier or band, does not need to be configured, and it can be determined according to the lowest frequency domain position of the frequency where the SSB is located, the subcarrier offset k_ssb parameter, and the 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. Here, u is the subcarrier spacing, which is 15 kHz for FR1 and 60 kHz for FR2. Among them, the "common reference point", resource block grids, the 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 above SSB is located means that the SSB and the BWP are on the same carrier or band.

[0151] In another example, for the 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 the SIB message, which is used to determine the positions of the UL BWP and the RO.

[0152] It should be noted that when the network-side device configures the frequency reference point for the frequency-domain unit, it is mainly considered that the sizes of the RBs and slots corresponding to different SCSs are different. Therefore, different SCSs have their own resource block grids, and the resource block grid is represented by the Common Resource Block (CRB), starting from CRB0. Point A is the same for the resource block grids of all SCSs, and its position corresponds to the center position of the first subcarrier (Subcarrier0) of CRB0 in the resource grid of each SCS. In this way, each UL BWP can calculate its own starting position based on Point A, and thus the starting frequency of the RO can be determined.

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

[0154] In a possible example, when the type of the frequency-domain unit is BWP, the network-side device configures a frequency offset value, that is, the 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 combination with Figure 7 , the network - side device can configure frequency - offset values for each carrier where a BWP is located, which are offsetToCarrier m, offsetToCarrier q, and offsetToCarrier p respectively.

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

[0158] Exemplarily, in combination with Figure 7 , the starting RBs of each UL BWP are respectively: and and and The UE can determine the starting frequency position of the RO through Point A, offsetToCarrier_i, msg1 - FrequencyStart_i configured by the network side.

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

[0160] In another possible example, as Figure 12 shown, when the above - mentioned frequency - domain unit type is a carrier, in this case, it is not necessary to indicate the starting frequency position of the carrier to the lowest position of the RO. Instead, it can provide a re - defined msg1 - FrequencyStart_i indication. In this way, the UE can determine the starting frequency position of the RO through Point A, offsetToCarrier_i, msg1 - FrequencyStart_i configured by the network side.

[0161] In another possible embodiment, in combination with Figure 12 , as Figure 13 shown, when the above - mentioned frequency - domain unit type is a carrier, all frequency - domain units can be configured with the same frequency - domain reference point, that is, the above - mentioned common frequency - domain reference point.

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

[0163] In another possible example, as Figure 14As shown, when the above frequency domain unit type is band, it is not necessary to indicate at this time It is only necessary to indicate the starting frequency position of the band to the lowest position of the RO, and it is sufficient to provide the redefined msg1-FrequencyStart_i indication. For the frequency from point A to the lowest frequency of the band, it can be notified through offsetToband_i. 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 by the network side.

[0164] Step 202: The UE determines the available ROs 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 can determine the available ROs according to the first rule.

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

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

[0168] For a UE that supports band combination>1, select the ROs on the frequency domain units other than the frequency domain unit where the SSB is located;

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

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

[0171] Illustrate by way of example, referring to Figure 8 , for a UE that supports band A and band C, the UE determines that its available ROs are located on the BWP of band A; for a UE that supports band B and band C, it determines that its available ROs are located on the BWP of band B; for a UE that only supports band C, it determines that its available ROs are located on the BWP of band C; for a UE that supports band A, B, and C, select any one of the ROs on the BWP of band A or the ROs on the BWP of band B.

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

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

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

[0175] Prach-ConfigurationIndex: A parameter that determines the time domain and prach format

[0176] prach-RootSequencyIndex: Determines the preamble root sequence

[0177] zeroCorrelationZoneConfig: Determines the Cyclic shift and set type of the preamble

[0178] preambleRecieivedTargetWindow: Determines the power threshold

[0179] totalNumberOfRA-premables: Determines the total number of PREAMBLEs in the cell

[0180] numberOfRA-PreamablesGroupA: Determines the range of the GROUP for contention based preambles

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

[0182] In the RO determination method provided in the embodiments of this application, the 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 at least two combinations of frequency domain units related to the UE capabilities, and at least one independent RO configuration configured on at least one frequency domain unit. The UE determines available ROs 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. Among them, one RO configuration is used to configure at least one RO of 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 ROs only through an SSB and the RO configurations on multiple frequency domain units, so that the network does not need to independently send an SSB for each frequency domain unit, reducing unnecessary signaling overhead and efficiency loss. In addition, in the embodiments of this application, the UE can also initiate random access through the available ROs on different frequency domain units, thereby reducing the collision probability in the random access process and improving the success rate of random access.

[0183] Optionally, in the embodiments of this application, 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 this application, the above predefined sorting rule is determined based on at least one of the following: predefined, or specified by a protocol, or configured by a network-side device.

[0186] In some embodiments of this application, the above predefined sorting rule includes sorting all ROs in ascending or descending order of the frequency of the frequency domain unit where the RO is located, or sorting all ROs in ascending or descending order of the frequency of the ROs in each RO configuration in a set of RO configurations.

[0187] Exemplarily, for sorting all ROs in ascending order of the frequency of the frequency domain unit where the RO is located, that is, first sorting all frequency domain units in ascending order of frequency. Then sort the ROs within the frequency domain unit in ascending order of frequency. As Figure 7 shown.

[0188] It should be noted that in the embodiments of this application, the above predefined sorting rule can be used, or other sorting rules can be used. This application does not make any restrictions.

[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 a protocol, or, configured by a network-side device.

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

[0191] Rule 1: 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 the ROs on at least one frequency-domain unit in a set of RO configurations respectively.

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

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

[0196] In a possible example, as Figure 15 shown, the SSB of one 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 Figure 16 shown, the SSB of one frequency-domain unit can also be mapped to the ROs on a subset of all associated frequency-domain units. For example, one SSB is associated with frequency-domain units A to C, but the SSB can be mapped only to RO0 to RO4 on frequency-domain units B and C. Optionally, the SSB can also be mapped only to the RO on frequency-domain unit B, that is, RO 0-1. The SSB does not necessarily map to the ROs on the same frequency-domain unit.

[0198] Exemplarily, the SSB of one frequency-domain unit mapping to the associated frequency-domain unit can be notified by MIB or SIB.

[0199] Example 1, in combination with Figure 7 , for the above-mentioned Rule 1, the SSB of one frequency-domain unit in a serving cell including multiple frequency-domain units can be mapped to the ROs on all indicated frequency-domain units or a subset of frequency-domain units, and all ROs use 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 to support UEs with the capabilities of all frequency-domain units.

[0200] Example 2, in combination with Figure 8 , for the above Rule 2, the SSB of a frequency domain unit in a serving cell including multiple frequency domain units can be respectively mapped to a combination of frequency domain units, that is, the RO of the above first frequency domain unit. The ROs within each combination of frequency domain units adopt a unified numbering. Each UE determines the RO on the corresponding combination of frequency domain units according to the ability to support the combination of frequency domain units.

[0201] Example 3, in combination with Figure 9 , for the above Rule 3, the SSB of a frequency domain unit in a serving cell including multiple frequency domain units is respectively mapped to the ROs of at least one frequency domain unit. Within each frequency domain unit, the ROs are numbered in a predefined order. The UE can determine the RO on any frequency domain unit according to its own ability.

[0202] In some embodiments of the present application, the mapping order of the SSB in the above predetermined mapping rule to the valid ROs can be the following order or one of them:

[0203] Map in ascending order of the numbers of the preambles within the ROs of each RO configuration in the set of RO configurations;

[0204] Map in ascending order of the indices of the frequency domain resources of the ROs in each RO configuration in the set of RO configurations;

[0205] When the network side device configures the at least two ROs within one time domain unit, map in ascending order of the RO numbers in each RO configuration in the set of RO configurations;

[0206] When the network side device configures the at least two ROs within multiple time domain units, map in ascending order of the indices of the multiple time domain units.

[0207] Illustrate with examples. If msg1 - FDM = 1 and ssb - perRACH - Occasion = 1, then it can be mapped according to Figure 17 If msg1 - FDM = 2 and ssb - perRACH - Occasion = 8, then it can be mapped according to Figure 18 If msg1 - FDM = 2 and ssb - perRACH - Occasion = 1, then it can be mapped according to Figure 19 If msg1 - FDM = 2 and ssb - perRACH - Occasion = 1 / 2, then it can be mapped according to Figure 20 Map.

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

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

[0210] Exemplarily, the period of the above SSB is the SSB transmission period, for example, 80 ms, and all SSBs are transmitted within every 80 ms.

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

[0212] Exemplarily, the above association period is: within one association period, after completing one round of mapping from SSB to RO, continue the next round of mapping until the remaining ROs are not enough to complete one round of mapping from SSB to RO.

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

[0214] Exemplarily, the network can configure a global index or number for the ROs on all frequency domain units for reference. Figure 5 In this way, for UEs supporting different band combination capabilities, only some RO resources can be used. For example, a UE supporting band B can only use RO 1-2 and can only select the SSBs mapped to RO 1-2 for access. This will cause some SSBs to have no corresponding RO mapping, and the UE cannot use these SSBs. The network can configure a polling mapping of RO numbers. That is, determine a current RO number according to the period of the SSB or the mapping period, the association period, the association mode period, and the SFN number. An example is that there are 6 SSBs respectively mapped to RO 0-5. 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 polls to SSB1 being mapped to RO2, SSB2 being mapped to RO 3, and SSB6 being mapped to RO1. k is determined according to the period of the SSB or the mapping period, the association period, the association mode period, and the SFN number or notified by the network. At time n + 2k, the mapping of SSB to RO polls to SSB1 being mapped to RO5, SSB2 being mapped to RO 0, and SSB6 being mapped to RO4. In this way, a UE supporting band B may still be able to access each SSB.

[0215] In a possible embodiment, since the above UE capabilities are different and not all frequency domain units can be used, the network side device will configure multiple sets of RO configurations to be sent to the UE. The UE can obtain multiple sets of RO configurations from the network side device and determine a set of RO configurations from the multiple sets of RO configurations according to its own capabilities.

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

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

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

[0219] In some embodiments of the present application, the UE can receive at least one set of RO configurations from the 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 capability information of the UE.

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

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

[0223] Optionally, in the embodiments of the present application, before the above step 202 "the UE determines the 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", the RO determination method provided by the present application further includes step 401 and step 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 and configures at least one SSB for it and sends it to the UE.

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

[0227] In some embodiments of the present application, a UE device in the idle or deactivated state (UE IDLE / INACTIVATE) can broadcast necessary system information through an SSB in one of multiple frequency domain units. For example, the frequency bandwidth, SCS, and PRACH resource of each carrier. Based on the SSB and SIB information, the UE can 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 decreased, and the network flexibility and energy efficiency can be improved.

[0229] Step 402: The UE determines the 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 an SSB through multiple ROs is beneficial to improving the system resource utilization rate and reducing the delay.

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

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

[0233] Exemplarily, the network-side device can configure RO resource B for a UE in the connected (RRC_CONNETED) state. For example, when the UE needs to establish uplink synchronization for a new cell, the UE is out of synchronization in the uplink when downlink data arrives, and the UE does not have PUCCH resources for SR when uplink data arrives.

[0234] Exemplarily, the network-side device can configure RO resource C for a UE for beam failure recovery.

[0235] Exemplarily, the network-side device can configure RO resource D for a UE for RRC connection reconstruction.

[0236] Exemplarily, the network-side device can configure RO resource E for a UE transitioning from RRC_INACTIVE to RRC_CONNETTED.

[0237] Exemplarily, the network-side device can configure RO resource F for a UE requesting other SI.

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

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

[0240] Optionally, in some embodiments of the present application, the network side device can also 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 can update the time domain and frequency domain resources of the RO through the SIB, for example, by increasing and releasing RO resources to achieve load balancing between ROs on different time units.

[0242] In some embodiments of the present application, the SSB can be mapped to the same type of RO, for example, only mapped to the RO located on the UL sub - band. This can be used to support base stations or UEs with full - duplex capabilities.

[0243] In some embodiments of the present application, the network side device can add the SSB to other frequency domain units in the MIB, for example, the SIB of the BWP, carrier, or band, that is, including the mapping relationship of the Coreset carrying the SIB. The network side device can also transmit the SIB information in other frequency domain units except the frequency domain unit where the SSB is transmitted, for example, the BWP, carrier, or band.

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

[0245] In the RO determination method provided by the embodiments of the present application, the execution subject can be an RO determination device. In the embodiments of the present application, taking the RO determination device executing the RO determination method as an example, the RO determination device provided by the embodiments of the present application is described.

[0246] The embodiments of the present application provide an RO determination device, as Figure 21 shown. The RO determination device 600 includes: an acquisition module 601 and a determination module 602, where:

[0247] The acquisition module 601 is configured to acquire a set of RO configurations. The above RO configurations are determined based on RO configuration parameters and frequency domain unit configuration parameters. A 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 combinations of frequency domain units 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] A determination module 602, configured to determine available ROs 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 obtained by an obtaining module 601; wherein, one RO configuration is used to configure at least one RO of one frequency domain unit.

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

[0253] The frequency domain resource of the RO;

[0254] The reference starting frequency of the RO;

[0255] The RO number;

[0256] The time domain resource of the RO;

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

[0258] The number of frequency division multiplexed ROs configured for each frequency domain unit of at least one frequency domain unit.

[0259] In some embodiments of the present application, the above RO configuration parameters include the reference starting frequency of the RO; the above obtaining module 601 is further configured to obtain frequency domain unit configuration parameters, and the frequency domain unit configuration parameters are used to determine the reference starting frequency of the RO.

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

[0261] The frequency reference point of the above at least one frequency domain unit;

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

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

[0264] The cyclic prefix of each frequency domain unit of the above at least one frequency domain unit;

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

[0266] In some embodiments of the present application, the above frequency reference points include at least one of the following:

[0267] The frequency reference point of the frequency domain unit without CD-SSB among the above at least one frequency domain unit;

[0268] A common frequency reference point for the frequency domain units without CD-SSB among the at least one frequency domain unit above;

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

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

[0271] In some embodiments of the present application, the above-mentioned determining module 601 is specifically configured to:

[0272] Sort 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, determine the available ROs corresponding to the one SSB on the at least one frequency domain unit.

[0274] In some embodiments of the present application, the above-mentioned predefined sorting rule includes: sorting all ROs in ascending order of the index of the frequency domain resources in each RO configuration in a set of RO configurations;

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

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

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

[0278] Map one SSB to the ROs on at least one frequency domain unit in a set of RO configurations respectively.

[0279] In some embodiments of the present application, the above-mentioned obtaining module 601 is specifically configured to receive at least one set of RO configurations from a network-side device; the above-mentioned determining module 602 is further configured to determine a set of RO configurations from 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 , such as Figure 22As shown, the above-mentioned RO determination device 600 further includes: a receiving module 603; the receiving module 603 is configured to receive at least one SSB on at least one frequency domain unit before determining available ROs on at least one frequency domain unit corresponding to one SSB according to one SSB received on at least one frequency domain unit and a set of RO configurations; a determining module 602 is further configured to determine available ROs corresponding to the one SSB on the at least one frequency domain unit according to a set of RO configurations obtained by the obtaining module 601 and one SSB received on at least one frequency domain unit.

[0281] In the RO determination device provided in the 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 at least two frequency domain unit combinations related to the UE capability of the UE, at least one independent RO configuration configured on at least one frequency domain unit; determine available ROs on at least one frequency domain unit corresponding to one SSB according to one SSB received on at least one frequency domain unit and a set of RO configurations; wherein, one RO configuration is used to configure at least one RO of one frequency domain unit. In this solution, the set of RO configurations obtained by the UE is the RO configurations on at least one frequency domain unit. The UE can determine the available ROs only through one SSB and the RO configurations on multiple frequency domain units, so that the network does not need to independently send an SSB for each frequency domain unit, reducing unnecessary signaling overhead and efficiency loss. In addition, in the embodiment of the present application, the UE can also initiate random access through the available ROs on different frequency domain units, thereby reducing the collision probability in the random access process and improving the success rate of random access.

[0282] The RO determination device in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices other than the terminal. Exemplarily, the terminal can include but is not limited to the types of the terminal 11 listed above, and other devices can be a server, a Network Attached Storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

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

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

[0285] The embodiments of the present application provide an RO configuration device, as Figure 23 shown, the RO configuration device 700 includes: a configuration module 701, a sending module 702, and an establishing module 703;

[0286] The configuration module 701 is configured to configure a set of RO configurations, and the above 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 the UE capabilities of the UE,

[0289] Configure at least one independent RO configuration on at least one frequency domain unit;

[0290] The sending module 702 is configured 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] The establishing module 703 is configured to establish a mapping relationship between the above SSB and a set of RO configurations;

[0293] Wherein, 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] Wherein, the above frequency domain unit configuration parameters include at least one of the following:

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

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

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

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

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

[0301] In some embodiments of the present application, the above frequency domain reference points include at least one of the following:

[0302] The frequency reference point of the frequency domain unit without CD-SSB in the above at least one frequency domain unit;

[0303] A common frequency reference point of the frequency domain unit without CD-SSB in the above at least one frequency domain unit;

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

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

[0306] In the RO configuration device provided in the embodiments of the present application, a set of RO configurations is configured. The RO configuration is determined based on RO configuration parameters and frequency domain unit configuration parameters. A 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 at least two frequency domain unit combinations related to the UE capability of the UE, at least one independent RO configuration configured on at least one frequency domain unit; sending a set of RO configurations; sending at least one SSB on at least one frequency domain unit and establishing 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 one frequency domain unit. In this solution, the RO configuration device configures the RO configuration on at least two frequency domain units according to one SSB, so that the RO configuration device does not need to independently configure an SSB for each frequency domain unit, thereby reducing unnecessary overhead and efficiency loss in the random access process.

[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 in an electronic device, such as an integrated circuit or a chip. The electronic device can be a network-side device. Exemplarily, the network-side device can include but is not limited to the types of network devices listed above, and the embodiments of the present application do not make specific limitations.

[0308] The RO configuration device provided in the embodiments of the present application can implement each process implemented by the above RO configuration method embodiments and achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0309] Such as Figure 24As shown in the figure, an embodiment of the present application further provides a communication device 800, including a processor 801 and a memory 802. A program or instruction that can run on the processor 801 is stored on the memory 802. For example, when the communication device 800 is a terminal, when the program or instruction is executed by the processor 801, each step of the above-mentioned RO determination method embodiment is implemented, and the same technical effect can be achieved. When the communication device 800 is a network-side device, when the program or instruction is executed by the processor 801, each step of the above-mentioned RO configuration method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be elaborated here.

[0310] An embodiment of the present application further provides a terminal, including a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement the steps in the method embodiment as Figure 25 shown. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and the same technical effect can be achieved. Specifically, Figure 25 To implement a schematic hardware structure diagram of a terminal according to an embodiment of the present application, it should be noted that the UE involved in the embodiment of the present application may be a terminal.

[0311] The terminal 100 includes, but is not limited to, at least some components such as 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 a processor 110.

[0312] Those skilled in the art can understand that the terminal 100 may further include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 110 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 25 The terminal structure shown in does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine some components, or have different component arrangements, which will not be elaborated here.

[0313] It should be understood that in the embodiments of the present application, the input unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042. The graphics processor 1041 processes the image data of static pictures or videos obtained by an image capturing device (such as a camera) in the video capturing mode or the image capturing mode. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of, for example, a liquid crystal display, an organic light emitting diode, etc. The user input unit 107 includes at least one of a touch panel 1071 and other input devices 1072. The touch panel 1071 is also referred to as a touch screen. The touch panel 1071 may include two parts: a touch detection device and a touch controller. The 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, a joystick, which will not be elaborated herein.

[0314] In the embodiments of the present application, after receiving downlink data from a network-side device, the radio frequency unit 101 may transmit it to the processor 110 for processing; in addition, the radio frequency unit 101 may send uplink data to the network-side device. Generally, the radio frequency unit 101 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0315] The memory 109 can be used to store software programs or instructions as well as 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. Among them, the first storage area may store an operating system, application programs 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 (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DRRAM). The memory 109 in the embodiments of the present application includes but is not limited to these and any other suitable types of memories.

[0316] The processor 110 may include one or more processing units; optionally, the processor 110 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above modem processor may not be integrated into the processor 110 either.

[0317] Among them, the processor 110 is used to obtain a set of RO configurations, and the above RO configurations are determined based on RO configuration parameters and frequency domain unit configuration parameters. A set of RO configurations is used 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 available ROs 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; wherein, one RO configuration is used to configure at least one RO of one frequency domain unit.

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

[0323] The frequency domain resource of the RO;

[0324] The reference starting frequency of the RO;

[0325] The RO number;

[0326] The time domain resource of the RO;

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

[0328] Each frequency domain unit of at least one frequency domain unit configures a frequency division multiplexed RO number.

[0329] In some embodiments of the present application, the above RO configuration parameters include the reference starting frequency of the RO; the obtaining module 601 is further configured to obtain frequency domain unit configuration parameters, and the frequency domain unit configuration parameters are used to determine the reference starting frequency of the RO.

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

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

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

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

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

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

[0336] In some embodiments of the present application, the above frequency domain reference points include at least one of the following:

[0337] The frequency reference point of the frequency domain unit without CD-SSB in the above at least one frequency domain unit;

[0338] A common frequency reference point for the frequency domain units without CD-SSB among the above at least one frequency domain unit;

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

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

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

[0342] Sort 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, determine the available ROs corresponding to the one SSB on the at least one frequency domain unit.

[0344] In some embodiments of the present application, the above predefined sorting rule includes: sorting all ROs in ascending order of the index of the frequency domain resources in each RO configuration in a set of RO configurations;

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

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

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

[0348] Map one SSB to the ROs on at least one frequency domain unit in a set of RO configurations respectively.

[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 the network side device; the above 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, and 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 the available ROs corresponding to one SSB on at least one frequency domain unit according to the one SSB received on the at least one frequency domain unit and a set of RO configurations; the processor 110 is further configured to determine the available ROs corresponding to one SSB on the at least one frequency domain unit according to a set of RO configurations and the one SSB received on at least one frequency domain unit.

[0351] In the terminal provided in the 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. A 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 at least two frequency domain unit combinations related to the UE capability of the UE, and at least one independent RO configuration is configured on at least one frequency domain unit; The UE determines available ROs 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; wherein, one RO configuration is used to configure at least one RO of one frequency domain unit. In this solution, the set of RO configurations obtained by the UE is the RO configurations on at least one frequency domain unit. The UE can determine the available ROs only through one SSB and the RO configurations on multiple frequency domain units, so that the network does not need to independently send an SSB for each frequency domain unit, reducing unnecessary signaling overhead and efficiency loss. In addition, in the embodiment of the present application, the UE can also initiate random access through the available ROs on different frequency domain units, thereby reducing the collision probability in the random access process and improving the success rate of random access.

[0352] It can be understood that the implementation processes of the implementation manners mentioned in this embodiment can refer to the relevant descriptions of the method embodiment Figures 1 to 20 and achieve the same or corresponding technical effects. To avoid repetition, they will not be elaborated here.

[0353] The embodiment of the present application also provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement as Figure 25 shown in the steps of the method embodiment. This embodiment of the network-side device corresponds to the above-mentioned method embodiment of the network-side device. Each implementation process and implementation manner of the above method embodiment can be applied to this embodiment of the network-side device and can achieve the same technical effects.

[0354] Specifically, the embodiment of the present application also provides a network-side device. As Figure 26 shown, 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. The antenna 901 is connected to the radio frequency device 902. In the uplink direction, the radio frequency device 902 receives information through the antenna 901 and sends the received information to the baseband device 903 for processing. In the downlink direction, the baseband device 903 processes the information to be sent and sends it to the radio frequency device 902. The radio frequency device 902 processes the received information and then sends it out through the antenna 901.

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

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

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

[0358] Specifically, the network-side device 900 in the embodiments of the present application further includes: instructions or programs stored on the memory 905 and executable on the processor 904, and the processor 904 calls the instructions or programs in the memory 905 to execute Figures 16 to 18 the methods executed by the respective modules shown, and achieves the same technical effects. To avoid repetition, they will not be elaborated here.

[0359] The embodiments of the present application further provide a readable storage medium, and programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the respective processes of the method embodiments of the above RO determination method are implemented, or the respective processes of the method embodiments of the above RO configuration method are implemented, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[0360] Wherein, the processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks or optical discs, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0361] The embodiments of the present application further provide a chip, and the chip includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the respective processes of the method embodiments of the above RO determination method, or the respective processes of the method embodiments of the above RO configuration method, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[0362] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip.

[0363] Another embodiment of the present application further provides a computer program / program product. The computer program / program product is stored in a storage medium and is executed by at least one processor to implement each process of the method embodiment of the above RO determination method, or to implement each process of the method embodiment of the above RO configuration method, and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

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

[0365] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without more limitations, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including that 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 a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may 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 embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions for causing the terminal or the network-side device to execute the methods described in various embodiments of the present application.

[0367] The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms of embodiments without departing from the purpose of the present application and the scope protected by the claims. These embodiments are all within the protection scope of the present application.

Claims

1. A method for determining a random access occasion RO, characterized in that, comprising: A user equipment UE obtains a set of RO configurations, which 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 at least two frequency domain unit combinations related to the UE capability of the UE, At least one independent RO configuration is configured on at least one frequency domain unit; The UE determines available ROs on at least one frequency domain unit corresponding to the one SSB according to the one synchronization signal block SSB received on the at least one frequency domain unit and the set of RO configurations; Wherein, the one RO configuration is used to configure at least one RO of one frequency domain unit.

2. The method according to claim 1, characterized in that, The RO configuration parameters include at least one of the following: The frequency domain resource of the RO; The reference starting frequency of the RO; The RO number; The time domain resource of the RO; The sequence length and subcarrier spacing SCS of the preamble sequence configured in each frequency domain unit of the at least one frequency domain unit; The number of frequency division multiplexed ROs configured for each frequency domain unit of the at least one frequency domain unit.

3. The method according to claim 2, characterized in that, The RO configuration parameters include the reference starting frequency of the RO. Before the UE obtains a set of RO configurations, the method further includes: The UE obtains frequency domain unit configuration parameters, which are used to determine the reference starting frequency of the RO.

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

5. The method according to claim 4, characterized in that, The frequency domain reference point includes at least one of the following: The frequency reference point of the frequency domain unit without a cell-defined synchronization signal block CD-SSB in the at least one frequency domain unit; A common frequency reference point of the frequency domain unit without a cell-defined 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, characterized in that, The UE determines available ROs on at least one frequency domain unit corresponding to the one SSB according to the one SSB received on the at least one frequency domain unit and the set of RO configurations, 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 available ROs corresponding to the one SSB on the at least one frequency-domain unit based on the first sequence and the mapping rule.

7. The method according to claim 6, wherein, the predefined sorting rule includes: sorting all ROs in ascending order of the indexes of the frequency-domain resources 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 the RO on the first frequency-domain unit in the set of RO configurations, where the first frequency-domain unit is a combination of frequency-domain units among the at least two frequency-domain units and is determined based on the UE capability of the UE; mapping the one SSB to the ROs on at least one frequency-domain unit in the set of RO configurations respectively.

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 configurations from the network-side device; the UE determines the set of RO configurations from the at least one set of RO configurations based on the capability information of the UE, and the capability information of the UE includes the frequency-domain units supported by the UE.

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

11. A method for RO configuration, wherein, it includes: the network-side device configures a set of RO configurations, which 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 at least two combinations of frequency-domain units related to the UE capability of the UE, configuring at least one independent RO configuration 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.

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 frequency-domain unit configuration parameters to the UE; wherein, the frequency-domain unit configuration parameters include at least one of the following: the frequency reference point in the at least one frequency-domain unit; The frequency offset value of each frequency domain unit in the at least one frequency domain unit relative to the frequency reference point; The SCS of each frequency domain unit in the at least one frequency domain unit; The cyclic prefix of each frequency domain unit in the at least one frequency domain unit; The starting RB and 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: The frequency reference point of the frequency domain unit without CD-SSB in the at least one frequency domain unit; A common frequency reference point of the frequency domain unit without 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, wherein, comprising: An acquisition module and a determination module; The acquisition module is configured to acquire a set of RO configurations, which 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 at least two frequency domain unit combinations related to the UE capability of the UE, Configuring at least one independent RO configuration on at least one frequency domain unit; The determination module is configured to determine the available ROs on at least one frequency domain unit corresponding to the one SSB according to the one SSB received on the at least one frequency domain unit and the set of RO configurations acquired by the acquisition module; wherein, one RO configuration is used to configure at least one RO of one frequency domain unit.

15. A RO configuration device, wherein, comprising: A configuration module, a transmission module and an establishment module; The configuration module is configured to configure a set of RO configurations, which 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 at least two frequency domain unit combinations related to the UE capability of the UE, Configuring at least one independent RO configuration on at least one frequency domain unit; The transmission module is configured to transmit a set of RO configurations; The transmission module is further configured to transmit at least one SSB on at least one frequency domain unit; The establishment module is configured 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.

16. A user equipment UE, wherein, comprising a processor and a memory, the memory stores a program or instruction that can 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, wherein, Comprising a processor and a memory, the memory stores programs or instructions that can run on the processor, and when the programs or instructions are executed by the processor, the steps of the RO configuration method described in any one of claims 11 to 14 are implemented.

18. A readable storage medium, characterized in that programs or instructions are stored on the readable storage medium, and when the programs or instructions are executed by a processor, the steps of the RO determination method described in any one of claims 1 to 10 are implemented, or the steps of the RO configuration method described in any one of claims 11 to 14 are implemented.

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