Communication processing method and device, chip and storage medium

Abstract

The invention discloses a communication processing method and device, a chip and a storage medium, and the method comprises the steps: receiving a semi-static signaling from network equipment, the semi-static signaling being used for configuring an initial PRACH resource; a dynamic signaling is received from the network device, the dynamic signaling indicating a change in the target PRACH resource relative to the initial PRACH resource. According to the method provided by the invention, the change of the PRACH resource is indicated through the dynamic signaling, the PRACH resource can be flexibly adjusted, the change of the number of the random access devices can be dynamically adapted, and the energy-saving gain of the system can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and in particular to a communication processing method and device, a chip and a storage medium. BACKGROUND

[0002] In a wireless communication system, the energy cost of a mobile network accounts for about 23% of the total cost of an operator. Most of the energy consumption comes from the wireless access network, especially the active antenna unit (AAU) and the baseband processing unit (BBU), which accounts for more than 90% of the entire energy cost. Therefore, 3GPP R18 sets up the topic of "network energy saving (NES)", aiming to study methods to save network energy consumption.

[0003] The existing base station side configures the resource of the physical random access channel (PRACH) and the actual beam sending number of the synchronization signal block (SSB) through the system information block 1 (SIB1), and then the user equipment (UE) determines the correspondence between the SSB and the PRACH according to the two information.

[0004] However, the period of adjusting the PRACH resource through the SIB1 configuration method is too long and not flexible, which is not conducive to energy saving. SUMMARY

[0005] The embodiments of the present application provide a communication processing method and device, a chip and a storage medium. Based on the method described in the present application, the PRACH resource can be flexibly adjusted, the change of the random access device quantity can be dynamically adapted, and the system energy saving gain can be improved.

[0006] In a first aspect, the present application provides a communication processing method, which comprises: receiving semi-static signaling from a network device, the semi-static signaling being used to configure initial PRACH resources; and receiving dynamic signaling from the network device, the dynamic signaling indicating the change of target PRACH resources relative to the initial PRACH resources.

[0007] Based on the method described in the first aspect, the change of the PRACH resource can be indicated through the dynamic signaling, the PRACH resource can be flexibly adjusted, the change of the random access device quantity can be dynamically adapted, and the system energy saving gain can be improved.

[0008] In a possible implementation, the method further includes: the semi-static signaling is used for configuring the initial PRACH resource, including: the semi-static signaling includes the first PRACH configuration index, and the first PRACH configuration index indicates the initial PRACH resource.

[0009] In a possible implementation, the semi-static signaling further includes first frequency domain resource indication information, the first PRACH configuration index indicates the initial PRACH resource, including: the first PRACH configuration index and the first frequency domain resource indication information indicate the initial PRACH resource.

[0010] In a possible implementation, the semi-static signaling is used for configuring the initial PRACH resource, including: the semi-static signaling includes the first PRACH configuration index and the second PRACH configuration index, the second PRACH configuration index is different from the first PRACH configuration index, and the second PRACH configuration index indicates the initial PRACH resource.

[0011] In a possible implementation, the semi-static signaling is used for configuring the initial PRACH resource, including: the semi-static signaling includes the first PRACH configuration index and the second PRACH configuration index, the second PRACH configuration index is different from the first PRACH configuration index, and the initial PRACH resource is remaining resource after excluding resource overlapping with resource indicated by the first PRACH configuration index from resource indicated by the second PRACH configuration index.

[0012] In a possible implementation, the dynamic signaling includes first indication information and / or second indication information, the first indication information is used for indicating a change of frequency domain resource of the target PRACH resource relative to the initial PRACH resource, and the second indication information is used for indicating a change of time domain resource of the target PRACH resource relative to the initial PRACH resource.

[0013] In a possible implementation, the dynamic signaling includes first indication information and second indication information, the first indication information is used for indicating that the frequency domain resource or the time domain resource of the initial PRACH resource has a change, and the second indication information is used for indicating a change amount corresponding to the change of the frequency domain resource or the time domain resource.

[0014] In a possible implementation, the dynamic signaling indicates the change of the target PRACH resource relative to the initial PRACH resource, including: the dynamic signaling indicates time domain resource that the target PRACH resource increases or decreases relative to the time domain resource of the initial PRACH resource.

[0015] In a possible implementation, the dynamic signaling indicates the change of the target PRACH resource relative to the initial PRACH resource, including: the dynamic signaling indicates whether resource in the initial PRACH resource is available.

[0016] In a possible implementation, the dynamic signaling indicates whether the resources in the initial PRACH resource are available, including: the dynamic signaling indicates whether the frequency domain resources and / or the time domain resources of the initial PRACH resource are available after being screened according to the index of the frequency domain resources and / or the time domain resources by a modulo operation.

[0017] In a possible implementation, the dynamic signaling indicates whether the resources in the initial PRACH resource are available, including: the dynamic signaling indicates whether the frequency domain resources and / or the time domain resources of the initial PRACH resource are available after being screened according to the index of the frequency domain resources and / or the time domain resources by a division operation.

[0018] In a possible implementation, the dynamic signaling indicates whether the resources in the initial PRACH resource are available, including: the dynamic signaling indicates whether the frequency domain resources and / or the time domain resources of the initial PRACH resource are available after being screened according to the index of the frequency domain resources and / or the time domain resources by a hash operation.

[0019] In a possible implementation, the dynamic signaling indicates whether the resources in the initial PRACH resource are available, including: the dynamic signaling indicates whether the corresponding PRACH resource in the initial PRACH resource is available by using a bitmap or a code point value.

[0020] In a possible implementation, the dynamic signaling indicates whether the resources in the initial PRACH resource are available, including: the dynamic signaling is used to indicate the proportion of the change of the PRACH resource corresponding to each synchronization signal block index in the initial PRACH resource.

[0021] In a possible implementation, the semi-static signaling further includes third indication information, the third indication information is used to indicate that the initial PRACH resource is divided into a plurality of PRACH resource subsets based on the frequency domain resources and / or the time domain resources; and the dynamic signaling indicates the change of the target PRACH resource relative to the initial PRACH resource, including: the dynamic signaling is used to indicate whether each PRACH resource subset in the plurality of PRACH resource subsets is available.

[0022] In a second aspect, the present application provides a communication processing method, including: sending semi-static signaling to a terminal device, the semi-static signaling being used to configure an initial physical random access channel (PRACH) resource; and sending dynamic signaling to the terminal device, the dynamic signaling indicating a change of a target PRACH resource relative to the initial PRACH resource.

[0023] The beneficial effects of the possible implementation of the second aspect can refer to the beneficial effects of the possible implementation of the first aspect, which will not be repeated here.

[0024] In a possible implementation, the method further includes: the semi-static signaling is used for configuring the initial PRACH resource, including: the semi-static signaling includes a first PRACH configuration index, and the first PRACH configuration index indicates the initial PRACH resource.

[0025] In a possible implementation, the semi-static signaling further includes first frequency domain resource indication information, the first PRACH configuration index indicates the initial PRACH resource, including: the first PRACH configuration index and the first frequency domain resource indication information indicate the initial PRACH resource.

[0026] In a possible implementation, the semi-static signaling is used for configuring the initial PRACH resource, including: the semi-static signaling includes a first PRACH configuration index and a second PRACH configuration index, the second PRACH configuration index is different from the first PRACH configuration index, and the second PRACH configuration index indicates the initial PRACH resource.

[0027] In a possible implementation, the semi-static signaling is used for configuring the initial PRACH resource, including: the semi-static signaling includes a first PRACH configuration index and a second PRACH configuration index, the second PRACH configuration index is different from the first PRACH configuration index, and the initial PRACH resource is remaining resource after excluding, from resource indicated by the second PRACH configuration index, resource overlapping with resource indicated by the first PRACH configuration index.

[0028] In a possible implementation, the dynamic signaling includes first indication information and / or second indication information, the first indication information is used for indicating a change of frequency domain resource of the target PRACH resource relative to the initial PRACH resource, and the second indication information is used for indicating a change of time domain resource of the target PRACH resource relative to the initial PRACH resource.

[0029] In a possible implementation, the dynamic signaling includes first indication information and second indication information, the first indication information is used for indicating that the frequency domain resource or the time domain resource of the initial PRACH resource has a change, and the second indication information is used for indicating a change amount corresponding to the change of the frequency domain resource or the time domain resource.

[0030] In a possible implementation, the dynamic signaling indicates the change of the target PRACH resource relative to the initial PRACH resource, including: the dynamic signaling indicates time domain resource that the target PRACH resource increases or decreases relative to the time domain resource of the initial PRACH resource.

[0031] In a possible implementation, the dynamic signaling indicates the change of the target PRACH resource relative to the initial PRACH resource, including: the dynamic signaling indicates whether resource in the initial PRACH resource is available.

[0032] In a possible implementation, the dynamic signaling indicates whether the resources in the initial PRACH resource are available, including: the dynamic signaling indicates whether the frequency domain resources and / or the time domain resources of the initial PRACH resource are available after being screened according to the index of the frequency domain resources and / or the time domain resources by a modulo operation.

[0033] In a possible implementation, the dynamic signaling indicates whether the resources in the initial PRACH resource are available, including: the dynamic signaling indicates whether the frequency domain resources and / or the time domain resources of the initial PRACH resource are available after being screened according to the index of the frequency domain resources and / or the time domain resources by a division operation.

[0034] In a possible implementation, the dynamic signaling indicates whether the resources in the initial PRACH resource are available, including: the dynamic signaling indicates whether the frequency domain resources and / or the time domain resources of the initial PRACH resource are available after being screened according to the index of the frequency domain resources and / or the time domain resources by a hash operation.

[0035] In a possible implementation, the dynamic signaling indicates whether the resources in the initial PRACH resource are available, including: the dynamic signaling indicates whether the corresponding PRACH resource in the initial PRACH resource is available by a bitmap or a code point value.

[0036] In a possible implementation, the dynamic signaling indicates whether the resources in the initial PRACH resource are available, including: the dynamic signaling is used to indicate the proportion of the change of the PRACH resource corresponding to each synchronization signal block index in the initial PRACH resource.

[0037] In a possible implementation, the semi-static signaling further includes third indication information, the third indication information is used to indicate that the initial PRACH resource is divided into a plurality of PRACH resource subsets based on the frequency domain resources and / or the time domain resources; and the dynamic signaling indicates the change of the target PRACH resource relative to the initial PRACH resource, including: the dynamic signaling is used to indicate whether each PRACH resource subset in the plurality of PRACH resource subsets is available.

[0038] In a third aspect, a communication apparatus is provided. The communication apparatus can be a terminal device, a device in a terminal device, or a device that can be used with a terminal device. The communication apparatus can also be a chip system. The communication apparatus can perform the method of the first aspect. The functions of the communication apparatus can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the functions described above. The units can be software and / or hardware. The operations and advantages of the communication apparatus can be found in the method of the first aspect and the advantages described above. Repetitive details will not be described again.

[0039] In a fourth aspect, the present application provides a communication apparatus, which can be a network device, a device in a network device, or a device capable of being used with a network device; wherein the communication apparatus can also be a chip system, and the communication apparatus can execute the method performed by the network device in the second aspect. The functions of the communication apparatus can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions. The units can be software and / or hardware. The operations and beneficial effects of the communication apparatus can be referred to the method and beneficial effects of the second aspect, and the repeated parts will not be described herein.

[0040] In a fifth aspect, the present application provides a communication apparatus, which includes a processor, and when the processor invokes a computer program in a memory, the method performed by the terminal device or the network device in the method of the first aspect or the second aspect is executed.

[0041] In a sixth aspect, the present application provides a communication apparatus, which includes a processor and a memory, and the memory is used to store computer execution instructions; and the processor is used to execute the computer execution instructions stored in the memory, so that the communication apparatus executes the method performed by the terminal device or the network device in the method of the first aspect or the second aspect.

[0042] In a seventh aspect, the present application provides a communication apparatus, which includes a processor, a memory, and a transceiver, and the transceiver is used to receive signals or send signals; the memory is used to store a computer program; and the processor is used to invoke the computer program from the memory to execute the method performed by the terminal device or the network device in the method of the first aspect or the second aspect.

[0043] In an eighth aspect, the present application provides a communication apparatus, which includes a processor and an interface circuit, and the interface circuit is used to receive computer execution instructions and transmit to the processor; and the processor runs the computer execution instructions to execute the method performed by the terminal device or the network device in the method of the first aspect or the second aspect.

[0044] In a ninth aspect, the present application provides a computer readable storage medium, which is used to store computer execution instructions, and when the computer execution instructions are executed, the method performed by the terminal device or the network device in the method of the first aspect or the second aspect is executed.

[0045] In a tenth aspect, the present application provides a communication apparatus, which includes a function or unit for executing the method of any one of the first aspect or the second aspect.

[0046] In an eleventh aspect, the present application provides a computer program product comprising a computer program which, when executed, causes the method performed by the terminal device or the network device in the method of the first aspect or the second aspect to be implemented.

[0047] In a twelfth aspect, the present application provides a communication system comprising a terminal device and a network device; wherein the terminal device is configured to perform the method of the first aspect, and the network device is configured to perform the method of the second aspect. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

[0049] Figure 2 is a schematic diagram of a random access procedure provided by an embodiment of the present application;

[0050] Figure 3 is a schematic diagram of a preamble time domain structure provided by an embodiment of the present application;

[0051] Figure 4A is an example of SSB to RO mapping provided by an embodiment of the present application;

[0052] Figure 4B is an example of SSB to RO mapping provided by an embodiment of the present application;

[0053] Figure 4C is an example of SSB to RO mapping provided by an embodiment of the present application;

[0054] Figure 4D is an example of SSB to RO mapping provided by an embodiment of the present application;

[0055] Figure 5 is a flowchart of a communication processing method provided by an embodiment of the present application;

[0056] Figure 6 is a schematic diagram of a PRACH resource provided by an embodiment of the present application;

[0057] Figure 7 is a schematic diagram of an initial PRACH resource provided by an embodiment of the present application;

[0058] Figure 8 is a schematic diagram of an initial PRACH resource provided by an embodiment of the present application;

[0059] Figure 9A is a schematic diagram of an initial PRACH resource provided by an embodiment of the present application;

[0060] Figure 9Bis a schematic diagram of initial PRACH resources provided by an embodiment of the present application;

[0061] Figure 10 is a schematic diagram of dynamic signaling provided by an embodiment of the present application;

[0062] Figure 11 is a schematic diagram of dynamic signaling provided by an embodiment of the present application;

[0063] Figure 12A is a schematic diagram of indexes of initial PRACH resources provided by an embodiment of the present application;

[0064] Figure 12B is a schematic diagram of indexes of initial PRACH resources provided by an embodiment of the present application;

[0065] Figure 12C is a schematic diagram of indexes of initial PRACH resources provided by an embodiment of the present application;

[0066] Figure 13 is a flowchart of a communication method provided by an embodiment of the present application;

[0067] Figure 14 is a flowchart of a communication method provided by an embodiment of the present application;

[0068] Figure 15 is a structural schematic diagram of a communication device provided by an embodiment of the present application;

[0069] Figure 16 is a structural schematic diagram of a communication device provided by an embodiment of the present application;

[0070] Figure 17 is a structural schematic diagram of a chip provided by an embodiment of the present application. DETAILED DESCRIPTION

[0071] The terms "first" and "second" and the like in the description, claims and drawings of the present application are intended to distinguish between similar objects but are not intended to describe a particular sequential order. Moreover, the terms "include", and "have", and any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device that comprises a list of steps or units are not necessarily limited to the listed steps or units but can optionally include additional steps or units not expressly listed or can optionally include additional steps or units inherent to such process, method, product or device.

[0072] Reference within this document to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be combined with any of the other embodiments unless specifically noted otherwise.

[0073] In this application, "at least one", "one or more", "multiple", "two or more", "at least two", "and / or", are used to describe the corresponding relationship between associated objects, which means that there can be three relationships, for example, "A and / or B" can mean: only A, only B, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the front and rear associated objects. "At least one of the following" or the like means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0074] The terms "comprising" and "having" and any variations thereof described in the following description of the application are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a list of steps or units is not limited to the listed steps or units, but can optionally further include other steps or units not listed or can optionally further include other steps or units inherent to such processes, methods, products, or apparatuses. It should be noted that in the embodiments of the present application, the words "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any method or design scheme described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as more preferred or advantageous than other methods or design schemes. Rather, the use of "exemplary" or "for example" is intended to present the relevant concept in a specific manner. In order to better understand the embodiments of the present application, the system architecture related to the embodiments of the present application will be introduced first as follows:

[0075] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), a worldwide interoperability for microwave access (WiMAX) or a wireless local area network (WLAN) system, a new radio (NR) system, a 5th generation (5G) communication system or a 6th generation (6G) communication system based on a service-based architecture (SBA) of the 3rd generation partner project (3GPP), and the like.

[0076] A network element in a communication system can send a signal to another network element or receive a signal from another network element. The signal can include information, configuration information, or data, and the like. For example, the communication system can include at least one terminal device and at least one network device. The network device that sends the configuration information can be the terminal device that receives the configuration information. In addition, it can be understood that if the communication system includes multiple terminal devices, the terminal devices can also send signals to each other, that is, the terminal device that sends the configuration information and the terminal device that receives the configuration information can both be terminal devices.

[0077] Figure 1 FIG. 1 is a schematic diagram of an architecture of a communication system provided by an embodiment of the present application. The communication system 100 can include a network device 110 and at least one terminal device 120, Figure 1 For example, the communication system includes a network device (i.e., the network device 110) and one terminal device (i.e., the terminal device 120). The terminal device 120 is connected to the network device 110 in a wireless manner. The terminal device 120 can be fixed or movable. The terminal device 120 can send an uplink signal to the network device 110, and the network device 110 can receive the uplink signal. The network device 110 can send a downlink signal to the terminal device 120. The following describes the network device 110 and the terminal device 120 involved in the communication system 100 in detail. Figure 1 The network device 110 and the terminal device 120 involved in the communication system 100 are described in detail below.

[0078] The network device 110 can provide a wireless access service for the terminal device 120, that is, the network device 110 is an access device capable of enabling the terminal device 120 to access the communication system in a wireless manner. The network device 110 can be an evolved Node B (eNB or eNodeB) in LTE; or a base station, a broadband network gateway (BNG), a convergence switch, or a non-3rd generation partnership project (3GPP) access device in a 5G network, and the like, which are not limited in the embodiments of the present application. The network device 110 can also be referred to as an access network device, an access node (AN), a radio access node (RAN), and the like. Exemplarily, the base station in the embodiments of the present application can include various forms of base stations, for example: a macro base station, a micro base station (also referred to as a small station), a relay station, an access point, a next-generation base station (gNodeB, gNB), a radio network controller (RNC), a node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (for example, a home evolved node B, or a home node B, HNB), a base band unit (BBU), a transmitting and receiving point (TRP), a transmitting point (TP), a mobile switching center, and a device in device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine (M2M) communication, Internet of Things (IoT) communication, and the like, which are not limited in the embodiments of the present application. Alternatively, the network device 110 can also be a centralized unit (CU), a distributed unit (DU), a centralized unit control plane (CU-CP) node, or a centralized unit user plane (CU-UP) node.

[0079] It can be understood that, in the embodiments of the present application, the apparatus for implementing the function of the network device can be the network device itself, or can be an apparatus capable of supporting the network device to implement the function, such as a chip system or a combined device or component capable of implementing the function of the network device, which can be installed in the network device. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0080] The terminal device 120 includes a device providing voice and / or data connectivity to a user, such as a terminal device 120 that is a wireless transceiver device having air interface capability. The terminal device 120 can be deployed in a terrestrial environment, including indoor or outdoor, handheld or vehicle mounted, and can be deployed on a water surface (such as a ship, etc.), or in the air (such as an airplane, a balloon, a satellite, etc.). The terminal device 120 can be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a vehicle-mounted terminal, a wireless terminal in self driving, a wireless terminal in remote medical treatment, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a wearable terminal, and the like. The embodiments of the present application do not limit the application scenarios. The terminal device 120 can also be referred to as a terminal, a user equipment (UE), a mobile station (MS), a mobile termination (MT), an access terminal, a vehicle-mounted terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a UE terminal, a wireless communication device, a UE agent, or a UE apparatus, etc. The terminal device 120 can be fixed or mobile.

[0081] It can be understood that, in the embodiments of the present application, all or part of the functions of the terminal device 120 can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (such as a cloud platform). The terminal device 120 in the present application can be a terminal for 5G or a terminal for 6G, and the present application does not limit this. In the embodiments of the present application, the device for implementing the functions of the terminal device 120 can be the terminal device 120, or a device capable of supporting the terminal device 120 to implement the functions, such as a chip system or a combination device or component that can implement the functions of the terminal device 120, which can be installed in the terminal device 120.

[0082] It should be noted that, Figure 1 The communication system 100 can also include other devices, such as wireless relay devices, wireless backhaul devices, core network devices, etc., which are not shown in Figure 1 The embodiments of the present application do not limit the number of various devices included in the communication system.

[0083] The embodiments of the present application can be applicable to downlink signal transmission, uplink signal transmission, and sidelink (such as device to device (D2D) signal transmission). For downlink signal transmission, the sending device is a network device, and the corresponding receiving device is a terminal device. For uplink signal transmission, the sending device is a terminal device, and the corresponding receiving device is a network device. For D2D signal transmission, the sending device is a terminal device, and the corresponding receiving device is also a terminal device. The transmission direction of the signal in the embodiments of the present application is not limited.

[0084] The network device 110 and the terminal device 120 can communicate through licensed spectrum, unlicensed spectrum, or both licensed spectrum and unlicensed spectrum. The network device 110 and the terminal device 120 can communicate through a spectrum below 6 gigahertz (GHz), a spectrum above 6 GHz, or both a spectrum below 6 GHz and a spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used between the network device 110 and the terminal device 120.

[0085] In the embodiments of the present application, the time domain symbol can be an orthogonal frequency division multiplexing (OFDM) symbol or a Discrete Fourier Transform-spread-OFDM (DFT-s-OFDM) symbol. If not specified, the symbol in the embodiments of the present application refers to a time domain symbol.

[0086] It can be understood that, in the embodiments of the present application, the physical downlink shared channel (PDSCH), the physical downlink control channel (PDCCH) and the physical uplink shared channel (PUSCH) are only examples of a downlink data channel, a downlink control channel and an uplink data channel, respectively. In different systems and different scenarios, the data channel and the control channel can have different names, and the embodiments of the present application are not limited in this regard.

[0087] The embodiments of the present application relate to a random access procedure, i.e., in a communication system as shown in Figure 1 In the communication system shown in the figure, the terminal device 120 needs to establish contact with the network 110 device through a random access technology before normal communication can be performed. For ease of understanding, the random access technology is introduced as follows. It can be understood that the introduction is not a limitation on the embodiments of the present application.

[0088] The random access is divided into a contention-based random access and a non-contention-based random access. The contention-based random access is usually divided into four steps, each step corresponding to a message: message 1 (Msg1), message 2 (Msg2), message 3 (Msg3) and message 4 (Msg4), which carry different signaling or information, respectively. In addition, in order to reduce the access time of the four-step contention-based random access, a two-step random access method is further proposed. The two-step random access method includes message A and message B, wherein the message A includes a preamble and the first data information (for example, similar to the message 1 and the message 3 in the four-step random access), and the message B includes a contention resolution and an uplink scheduling (for example, similar to the message 2 and the message 4 in the four-step random access).

[0089] The four-step random access is taken as an example for description, and reference is made to Figure 2 , Figure 2 is a schematic diagram of a random access procedure provided by the embodiments of the present application, which illustrates a random access procedure, and the procedure mainly includes the following steps:

[0090] S201, the network device sends a synchronization signal and a master information block (MIB).

[0091] The synchronization signal is divided into a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), and the two synchronization signals can be used together to determine a cell identity (CI). The MIB is carried on a physical broadcast channel (PBCH), and the MIB and an additional 8-bit PBCH payload information can be used together to determine a system frame number, a subcarrier spacing used by system information block type 1 (SIB1) signaling, location size information of a control resource set 0 (Coreset0) scheduling SIB1 signaling, and information of a synchronization signal / PBCH block (SSB), etc. The PBCH, the PSS, and the SSS together constitute a synchronization broadcast block SSB, and the SSB is periodically sent by the network device. Generally, the SSB occupies 20 resource blocks (RBs) in the frequency domain and 4 orthogonal frequency division multiplexing (OFDM) symbols in the time domain. The PSS and the SSS occupy symbols 0 and 2 in the time domain, and the PBCH occupies symbols 1, 2, and 3.

[0092] After the terminal device is powered on or needs to re-access the network, the synchronization signal of the network device is scanned to perform downlink time and frequency synchronization.

[0093] S202, the network device sends system information, and a signal carrying the system information is also called a system information block (SIB). For example, the network device sends SIB1, which carries random access configuration information, information of a search space (SearchSpace) corresponding to a physical downlink control channel (PDCCH) in message 2 or message 4, etc.

[0094] The terminal device can determine the time domain position and the frequency domain position of the control resource set Coreset0 according to the MIB related information in the PBCH in S201, and then obtain SIB1 through Coreset0.

[0095] In S203, the terminal device sends a preamble, i.e., the aforementioned message 1, to the network device.

[0096] Specifically, the terminal device can determine the used preamble and the position of the random access channel occasion (RO) and the like information according to the random access configuration information carried in the SIB1. The terminal device can select to send the preamble on the RO corresponding to the SSB. The preamble can also be referred to as a preamble code, a random access preamble (RACH preamble) or a random access sequence (RACH sequence), which is used for the terminal device to initiate a connection request, a handover request, a synchronization request or a scheduling request to the network device. The sending process of the preamble can also be understood as a physical random access channel (PRACH) access.

[0097] Exemplarily, in the 5G NR system, the preambles of the terminal device are mainly divided into two types, i.e., short sequences and long sequences. The length of the short sequence can be 139 bits for example, and the length of the long sequence can be 839 bits for example. The subcarrier spacing (SCS) corresponding to the short sequence can be 15 kHz, 30 kHz, 60 kHz, 120 kHz, 480 kHz, 960 kHz, etc., or the subcarrier spacing corresponding to the short sequence can also be 15 kHz*2 μ , where μ = 0, 1, 2, 3, 4, 5, 6, etc. The SCS corresponding to the SCS long sequence is 1.25 kHz and 5 kHz.

[0098] Referring to Figure 3 , Figure 3 is a schematic diagram of a preamble time domain structure provided by an embodiment of the present application. Figure 3 The relative lengths of preambles of different formats in the time domain are schematically shown.

[0099] As shown in Figure 3 , the format of the long sequence preamble has four types, which are format 0, format 1, format 2 and format 3. The most initial position is the time resource T CP of the cyclic prefix CP, and the middle positions of the four formats respectively contain 1, 2, 4 and 4 time resources T SEQand finally contains a guard period GP, the time length of the four formats in the time domain can be represented as 1ms, 3ms, 4.3ms and 1ms respectively. There are 9 formats of short sequence preambles, which are A1, A2, A3, B1, B2, B3, B4, C0 and C2. As an example, the time length (or time domain length) corresponding to each format is in units of OFDM symbols, and the number of OFDM symbols included in the time domain length of the 9 formats is 2, 4, 6, 2, 4, 6, 12, 1 and 4 respectively.

[0100] One preamble format corresponds to one random access occasion RO, and one RO represents the resource (including time domain resource (such as time domain position and / or time length) and frequency domain resource) occupied by the preamble. In other words, one RO can be used to carry one preamble, and the format of the preamble is the preamble format corresponding to the RO. It can be understood that if the terminal device sends a preamble on an RO, the format of the preamble carried by the RO is the preamble format corresponding to the RO. For example, if the terminal device sends a preamble on an RO corresponding to the aforementioned format A1, the format of the preamble carried by the RO is A1. In addition, different preamble format types correspond to different time length units, and the configuration of the RO is also different. For example, for the long sequence format, the unit can be defined as milliseconds, and the RO can be configured in a system frame in units of subframes for carrying the preamble of the long sequence format. For example, for the short sequence format, the unit can be defined as OFDM symbols, and the RO needs to be configured by considering the system frame, subframe, time slot and OFDM symbol in four units for carrying the preamble of the short sequence format.

[0101] S204, the network device sends a message 2 to the terminal device.

[0102] The message 2 can also be referred to as a random access response (RAR) message, which is a response of the network device to the received message 1. Specifically, the network device sends a PDCCH and a physical downlink shared channel (PDSCH) carrying the message 2 to the terminal device. The downlink control information (DCI) message in the PDCCH is scrambled by a random access-radio network temporary identity (RA-RNTI). The terminal device calculates the RA-RNTI according to the RO position where the preamble is sent. If the terminal device can recover the PDCCH according to the calculated RA-RNTI, it can be determined that its random access is responded, and then the terminal device can continue to receive the message 2 in the subsequent PDSCH.

[0103] S205, the terminal device sends a message 3 to the network device, where the message 3 is used to request to establish a radio resource control (RRC) connection. The message 3 can also be referred to as a first uplink scheduling transmission, which can be a transmission scheduled by the UL grant in the message 2 or a retransmission scheduled by a DCI scrambled by a temporary cell-radio network temporary identity (TC-RNTI).

[0104] S206, the network device sends a message 4 to the terminal device, where the message 4 is used to indicate that the terminal device is connected successfully, i.e., the contention random access is successful.

[0105] In this application, the RO can also be referred to as a PRACH resource, and the PRACH resource can include information such as a random access time and a random access frequency.

[0106] For the terminal device, the random access time included in the PRACH resource can be an orthogonal frequency division multiplexing (OFDM) symbol, a micro-slot, a slot, a subframe, a time period with a time length of one or more basic time units, which can represent the time required to send a predefined random access preamble, and the random access frequency represents the frequency band required to send a predefined random access preamble.

[0107] In some embodiments, one PRACH resource can be identified by two dimensions of a random access time and a random access frequency, i.e., one random access time and one random access frequency define one PRACH resource.

[0108] In other embodiments, one random access time and frequency can define multiple PRACH resources, which are not limited in this application.

[0109] For the network device, the PRACH resource is a region specified in the time domain and the frequency domain that can be used to receive a random access preamble. In NR, since the SSB is associated with different beams, the terminal device needs to select a specific beam and use the beam to send the PRACH. In order to let the network device know the specific beam selected by the terminal device, 3GPP defines a specific mapping between the SSB and the RO (i.e., the PRACH resource). By detecting the RO in which the terminal device sends the PRACH, the network device can know the specific SSB beam selected by the terminal device.

[0110] The mapping between the SSB and the RO can be mainly defined by the following three parameters in the SIB1:

[0111] • totalNumberOfRA-Preambles

[0112] • ssb-perRACH-OccasionAndCB-PreamblesPerSSB

[0113] • msg1-FDM

[0114] totalNumberOfRA-Preambles can indicate the total number of random access preambles corresponding to one RO, in other words, this parameter can indicate the total number of preambles used for random access for RO. In some embodiments, this parameter can take a value, for example, any positive integer in 1~63.

[0115] ssb-perRACH-OccasionAndCB-PreamblesPerSSB can be used to indicate the number of SSBs associated with each RO, in other words, this parameter can indicate the relationship between SSB and RO. In some embodiments, for example, this parameter can take a value, for example, any one of 1 / 8, 1 / 4, 1 / 2, 1, 2, 4, 8, 16.

[0116] msg1-FDM can be used to indicate the number of multiplexing of ROs in the frequency domain, in other words, this parameter can indicate the number of ROs in the frequency domain at the same position in the time domain. In some embodiments, this parameter can take a value, for example, any one of 1, 2, 4, 8.

[0117] It can be understood that the values of the above-mentioned parameters are only examples and are not a limitation of the present application.

[0118] Referring to Figure 4A through Figure 4D , Figure 4A through Figure 4D is an example of SSB to RO mapping provided by an embodiment of the present application. In Figure 4A through Figure 4D , based on the RRC parameter configuration, there are 8 SSBs in each SSB period, the frequency domain multiplexing parameter (i.e., msg1-FDM) is 4, Figure 4A shows an example of the case where one SSB corresponds to 4 ROs (i.e., ssb-perRACH-OccasionAndCB-PreamblesPerSSB = 1 / 4), Figure 4B shows an example of the case where one SSB corresponds to 2 ROs (i.e., ssb-perRACH-OccasionAndCB-PreamblesPerSSB = 1 / 2), Figure 4C shows an example of the case where one SSB corresponds to 1 RO (i.e., ssb-perRACH-OccasionAndCB-PreamblesPerSSB = 1),Figure 4D An example of a case where an SSB corresponds to 1 / 2 RO (i.e., ssb-perRACH-OccasionAndCB-PreamblesPerSSB = 2) is shown.

[0119] The adjustment period of the RO (i.e., PRACH resource) configured by the SIB is long and not flexible enough, and the present application further provides a communication processing method for adjusting the PRACH resource. In the communication processing method for adjusting the PRACH resource provided in the embodiments of the present application, the initial PRACH resource is first configured by the semi-static signaling, and then the change of the target PRACH resource relative to the initial PRACH resource is indicated by the dynamic signaling, so that the PRACH resource can be flexibly adjusted, the change of the number of random access devices can be dynamically adapted, and the system energy saving gain can be improved.

[0120] Of course, it should be noted that the communication processing method provided in the embodiments of the present application can be applied to any suitable scenario, which is not limited in the present application.

[0121] Referring to Figure 5 , Figure 5 is a flowchart of a communication processing method provided in the embodiments of the present application. The execution subject of the communication processing method can be the terminal device and the network device mentioned above. Alternatively, Figure 5 The execution subject of the method shown in the figure can be a chip in the terminal device and a chip in the network device, which is not limited in the embodiments of the present application. Figure 5 The terminal device and the network device are taken as examples to illustrate the execution subject of the method.

[0122] S501, the network device sends semi-static signaling to the terminal device; correspondingly, the terminal device receives the semi-static signaling from the network device.

[0123] The semi-static signaling is used to configure the initial PRACH resource.

[0124] In some embodiments, the semi-static signaling can be system message signaling.

[0125] In some embodiments, the semi-static signaling can be MIB signaling.

[0126] In some embodiments, the semi-static signaling can be SIB signaling, and more specifically, the semi-static signaling can be any suitable signaling among SIB1-SIB20.

[0127] In some embodiments, the semi-static signaling can be RRC signaling.

[0128] In some embodiments, the semi-static signaling can include PRACH configuration information used to configure the initial PRACH resource.

[0129] The PRACH configuration information can be understood as the random access configuration information as described in S202.

[0130] The PRACH configuration information can be used to indicate at least one of the following parameters: preamble format, reference slot number, subcarrier spacing corresponding to the reference slot, number of PRACH slots within a slot, starting symbol of the first RO within a PRACH slot, number of ROs within a PRACH slot, time length of an RO. Each parameter is explained below.

[0131] Preamble format, mainly indicates the format of long sequence preamble and the format of short sequence preamble, including 0, 1, 2, 3, A1, A2, A3, B1, B2, B3, B4, C0 or C2.

[0132] Slot number, or reference slot index, refers to the position of the reference slot where the RO is located in a system frame. The number of reference slots where the RO is located can be one or more.

[0133] Subcarrier spacing corresponding to the reference slot, refers to the subcarrier spacing corresponding to the reference slot as a reference. The subcarrier spacing may, for example, be 15 kHz or 60 kHz.

[0134] Number of PRACH slots within a slot: A reference slot can include one or more normal slots. Here, the PRACH slot refers to the normal slot containing the RO in the reference slot. The subcarrier spacing corresponding to the PRACH slot is greater than or equal to the subcarrier spacing corresponding to the reference slot. For example, the subcarrier spacing corresponding to the reference slot is 60 kHz, and the subcarrier spacing corresponding to the PRACH slot can be 120 kHz, 480 kHz or 960 kHz. For example, corresponding to the above Figure 2 The subcarrier spacing corresponding to the PRACH slot can be determined by the subcarrier spacing used by the SIB1 signaling in the schematic random access process. The subcarrier spacing corresponding to the PRACH slot can also be understood as the random access subcarrier spacing or the initial access subcarrier spacing.

[0135] Some examples of the number of PRACH slots within a reference slot are as follows: for example, if the subcarrier spacing corresponding to a PRACH slot is 60 kHz and the subcarrier spacing corresponding to a reference slot is 60 kHz, one reference slot includes one normal slot, and therefore the reference slot includes at most one PRACH slot; if the subcarrier spacing corresponding to a PRACH slot is greater than 60 kHz, for example, 120 kHz, 480 kHz, or 960 kHz, and the subcarrier spacing corresponding to a reference slot is 60 kHz, one reference slot can include two or more normal slots, and therefore the reference slot can include one or more PRACH slots.

[0136] The starting symbol of the first RO within a PRACH slot, which is the index of the first OFDM symbol occupied by the first RO in a PRACH slot.

[0137] The number of ROs within a PRACH slot, which can be one or more. Embodiments of the present application mainly describe the case of multiple ROs.

[0138] The time length of an RO, which is in units of OFDM symbols. For example, the time length of an RO in the format of a short preamble sequence occupies one or more OFDM symbols. The number of OFDM symbols occupied by an RO is related to the preamble format.

[0139] In an optional embodiment, the foregoing parameters can be stored in a predefined table, and the first information can be an index in the table indicating the foregoing parameters. That is, the first information can be index information, and the index indicates one or more of the foregoing parameters.

[0140] In addition, the terminal device and the network device can both obtain or configure the predefined table, and therefore the terminal device can query the predefined table to determine the parameters indicated by the first information after receiving the first information.

[0141] In some embodiments, the PRACH configuration information can be the Physical Random Access Channel Configuration Index (PRACH Config Index) as in the tables 6.3.3.2-2 ~ 6.3.3.2-4 of section 6.3.3.2 of 3GPP protocol TS 38.211. Based on the PRACH Config Index in these tables, the OFDM symbols occupied by the RO, i.e., the time domain resource of the RO, can be determined in the way of section 5.3.2 of TS 38.211. In other words, the PRACH Config Index can indicate the PRACH resource. These tables and the corresponding way of determining the OFDM symbols are incorporated by reference into the present application.

[0142] Referring to Figure 6 , Figure 6 is a schematic diagram of a PRACH resource provided by an embodiment of the present application. Through the PRACH Config Index as described before, the PRACH resource for sending the preamble can be configured.

[0143] Figure 6 An example of the PRACH resource corresponding to a specific preamble bandwidth for a given preamble type is shown. As Figure 6 indicated, the preamble can be sent in a subset of resources of a PRACH slot, which repeats every PRACH resource period.

[0144] The subset of resources of these PRACH slots can have multiple ROs in the frequency domain, which can be determined by the aforementioned msg1-FDM parameter, for example.

[0145] For a given preamble type, corresponding to a specific preamble bandwidth, the total RACH time-frequency resources available to the cell can be generally expressed as:

[0146] • Configurable PRACH resource period, for example, the range can be from 10 ms to a maximum of 160 ms (based on the parameters or tables in the existing protocol);

[0147] • A set of configurable PRACH slots within the PRACH resource period;

[0148] • Configurable frequency domain resources within the PRACH slot.

[0149] It can be understood that Figure 6 is only a PRACH resource configuration example and does not constitute a limitation on the present application.

[0150] It should be noted that, with the evolution of technology, the parameters in the foregoing table or the form of the table can be changed, for example, the table adds parameters or reduces parameters, and the parameter names in the table can also be changed. The PRACH configuration information in the embodiments of the present application is not limited to the table in the foregoing examples. When the table parameters or the table form are changed, the PRACH configuration information can be obtained according to the table after the parameters are changed or the form is changed, or the network device directly sends one or more of the above parameters through signaling.

[0151] In some embodiments, the PRACH configuration information in the semi-static signaling can be, for example, the first PRACH configuration index in the PRACH configuration index in the table 6.3.3.2-2~6.3.3.2-4 in section 6.3.3.2 of the protocol TS38.211. That is, the semi-static signaling can include the first PRACH configuration index, and the first PRACH configuration index indicates the initial PRACH resource.

[0152] The terminal device can determine the first PRACH resource indicated by the first PRACH configuration index based on the first PRACH configuration index included in the semi-static signaling, through the determination manner of the foregoing parameters and OFDM symbols. Further, the terminal device can determine the first PRACH resource as the initial PRACH resource.

[0153] Based on this, the terminal device can determine the initial PRACH resource based on the semi-static signaling.

[0154] Referring to Figure 7 , Figure 7 is a schematic diagram of an initial PRACH resource provided by an embodiment of the present application.

[0155] As Figure 7 indicated, based on a specific first PRACH configuration index, the initial PRACH resource indicated by the specific first PRACH configuration index can be one RO in the frequency domain, and the PRACH resource period in the time domain is 80ms. The terminal device can determine the initial PRACH resource as shown in Figure 7 based on the specific first PRACH configuration index included in the semi-static signaling.

[0156] It can be understood that Figure 7 the initial PRACH resource shown in is only one PRACH resource configuration example, and does not constitute a limitation on the present application.

[0157] In some embodiments, the semi-static signaling can further comprise first frequency domain resource indication information, the first frequency domain resource indication information being used to indicate that one or more frequency domain resources are additionally added on the basis of the frequency domain resources of the first PRACH resource. In this case, the first PRACH configuration index and the first frequency domain resource indication information jointly indicate the initial PRACH resource.

[0158] For example, the terminal device receives semi-static signaling from the network device, and the semi-static signaling can comprise a first PRACH configuration index and first frequency domain resource indication information. The terminal device can determine the first PRACH resource indicated by the first PRACH configuration index according to the first PRACH configuration index. Then, the terminal device can determine, according to the first frequency domain resource indication information, additional PRACH resources associated with the first PRACH resource on one or more frequency domain resources additionally indicated by the first frequency domain resource indication information, the additional PRACH resources corresponding to the first PRACH resource in the time domain. Finally, the terminal device can determine the first PRACH resource and the additional PRACH resources as the initial PRACH resource.

[0159] Referring to Figure 8 , Figure 8 is a schematic diagram of an initial PRACH resource provided by an embodiment of the present application. Figure 8 An example of an initial PRACH resource is shown when the first PRACH configuration index and the first frequency domain resource indication information are included in the semi-static signaling.

[0160] wherein, Figure 8 The first PRACH configuration index involved in Figure 7 is the same as the first PRACH configuration index involved in Figure 7 , and the first frequency domain resource indication information indicates that one frequency domain resource is additionally added on the basis of the frequency domain resources of the first PRACH resource. Therefore, Figure 8 The time domain resources of the initial PRACH resource in Figure 7 are the same as the time domain resources of the initial PRACH resource in Figure 7 , and the PRACH resource period is 80ms, and there are two ROs in the frequency domain.

[0161] In some embodiments, the semi-static signaling can further comprise a second PRACH configuration index, i.e., the semi-static signaling can comprise a first PRACH configuration index and a second PRACH configuration index, wherein the second PRACH configuration index is different from the first PRACH configuration index, and in this case, the second PRACH configuration index indicates the initial PRACH resource.

[0162] That is, the terminal device can determine the second PRACH resource according to the second PRACH configuration index in the semi-static signaling, and determine the second PRACH resource as the initial PRACH resource.

[0163] Optionally, in the semi-static signaling, the first PRACH configuration index and the second PRACH configuration index can be distinguished by field names. For example, the field name identifying the first PRACH configuration index can be the same as the traditional field name, and the field name identifying the second PRACH configuration index can be different from the traditional field name.

[0164] Optionally, in the semi-static signaling, the first PRACH configuration index and the second PRACH configuration index can be distinguished by indicating the priority. For example, the priority of the second PRACH configuration index can be set to be higher than the priority of the first PRACH configuration index.

[0165] Optionally, the first PRACH configuration index and the second PRACH configuration index can be included in the semi-static signaling only in the case that the terminal device supports multiple PRACH configuration indexes, or only for terminal devices with the capability of supporting multiple PRACH configuration indexes, so as to save signaling overhead.

[0166] In some embodiments, the semi-static signaling can include the first PRACH configuration index and the second PRACH configuration index, wherein the second PRACH configuration index is different from the first PRACH configuration index, and the initial PRACH resource is the remaining resource after excluding the resource overlapping with the resource indicated by the first PRACH configuration index from the resource indicated by the second PRACH configuration index.

[0167] That is, the terminal device can determine the second PRACH resource according to the second PRACH configuration index in the semi-static signaling, determine the first PRACH resource according to the first PRACH configuration index, and finally determine the initial PRACH resource by excluding the resource overlapping with the first PRACH resource from the second PRACH resource.

[0168] Optionally, in the semi-static signaling, the first PRACH configuration index and the second PRACH configuration index can be distinguished by field names. For example, the field name identifying the first PRACH configuration index can be the same as the traditional field name, and the field name identifying the second PRACH configuration index can be different from the traditional field name.

[0169] Optionally, the first PRACH configuration index and the second PRACH configuration index can be distinguished by indicating the priority in the semi-static signaling. For example, the priority of the second PRACH configuration index can be set to be higher than the priority of the first PRACH configuration index.

[0170] Optionally, the first PRACH configuration index and the second PRACH configuration index can be included in the semi-static signaling only in the case that the terminal device supports multiple PRACH configuration indexes, or only for the terminal device with the capability of supporting multiple PRACH configuration indexes, so as to save the signaling overhead.

[0171] Referring to Figure 9A through Figure 9B , Figure 9A through Figure 9B is a schematic diagram of the initial PRACH resource provided by the embodiments of the present application.

[0172] Figure 9A An example of the initial PRACH resource is shown in the case that the first PRACH configuration index and the second PRACH configuration index are included in the semi-static signaling. Among them, Figure 9A the first PRACH configuration index involved in the Figure 7 the first PRACH configuration index involved in the is the same as the first PRACH configuration index, and the second PRACH configuration index is different from the first PRACH configuration index, the difference being that the PRACH resource period of the second PRACH resource indicated by the second PRACH configuration index is 40 ms. As shown in Figure 9A , the initial PRACH resource is the second PRACH resource indicated by the second PRACH configuration index.

[0173] Figure 9B An example of the initial PRACH resource is shown in the case that the first PRACH configuration index and the second PRACH configuration index are included in the semi-static signaling. Among them, Figure 9A the first PRACH configuration index involved in the Figure 7 the first PRACH configuration index involved in the is the same as the first PRACH configuration index, and the second PRACH configuration index is different from the first PRACH configuration index, the difference being that the PRACH resource period of the second PRACH resource indicated by the second PRACH configuration index is 40 ms. As shown in Figure 9B , the initial PRACH resource is the remaining resource after excluding the resource overlapping with the first PRACH resource indicated by the first PRACH configuration index from the second PRACH resource indicated by the second PRACH configuration index.

[0174] S502, the network device sends dynamic signaling to the terminal device; correspondingly, the terminal device receives the dynamic signaling from the network device.

[0175] The dynamic signaling is used to indicate a change of the target PRACH resource relative to the initial PRACH resource.

[0176] In some embodiments, the dynamic signaling can be DCI signaling.

[0177] In some embodiments, the dynamic signaling can include first indication information and / or second indication information, the first indication information being used to indicate a change of a frequency domain resource of the target PRACH resource relative to the initial PRACH resource, and the second indication information being used to indicate a change of a time domain resource of the target PRACH resource relative to the initial PRACH resource.

[0178] Referring to Figure 10 , Figure 10 is a schematic diagram of dynamic signaling provided by an embodiment of the present application. As shown in Figure 10 , the dynamic signaling can include first indication information with N1 bits and / or second indication information with N2 bits.

[0179] The change of the frequency domain resource of the target PRACH resource relative to the initial PRACH resource can be indicated by setting the N1 bits in the first indication information. More specifically, the number of ROs that the PRACH resource can multiplex in the frequency domain can be dynamically adjusted by the first information.

[0180] Taking N1=2 as an example: 00 can represent an increase of 1 frequency domain occasion relative to the initial PRACH resource in the frequency domain; 01 can represent an increase of 2 frequency domain occasions relative to the initial PRACH resource in the frequency domain; 10 can represent a decrease of 1 frequency domain occasion relative to the initial PRACH resource in the frequency domain; and 11 can represent a decrease of 2 frequency domain occasions relative to the initial PRACH resource in the frequency domain. Alternatively, 00 can represent that the frequency domain occasion of the target PRACH resource in the frequency domain is doubled relative to the initial PRACH resource; 01 can represent that the frequency domain occasion of the target PRACH resource in the frequency domain is quadrupled relative to the initial PRACH resource; 00 can represent that the frequency domain occasion of the target PRACH resource in the frequency domain is halved relative to the initial PRACH resource; and 00 can represent that the frequency domain occasion of the target PRACH resource in the frequency domain is quartered relative to the initial PRACH resource.

[0181] It can be found that even without adjusting the msg1-FDM parameter, the dynamic adjustment of the number of ROs that the PRACH resource can multiplex in the frequency domain can be achieved.

[0182] The N2 bits in the second indication information can be set to indicate the change of the time domain resource of the target PRACH resource relative to the initial PRACH resource. More specifically, the second information can be used to dynamically adjust the change of the PRACH resource period of the PRACH resource in the time domain.

[0183] Taking N2=2 as an example: 00 can represent that the PRACH resource period of the target PRACH resource is doubled (for example, the period is changed from 40 ms to 80 ms) relative to the PRACH resource period of the initial PRACH resource; 01 can represent that the PRACH resource period of the target PRACH resource is quadrupled (for example, the period is changed from 40 ms to 160 ms) relative to the PRACH resource period of the initial PRACH resource; 10 can represent that the PRACH resource period of the target PRACH resource is halved (for example, the period is changed from 160 ms to 80 ms) relative to the PRACH resource period of the initial PRACH resource; and 11 can represent that the PRACH resource period of the target PRACH resource is quartered (for example, the period is changed from 160 ms to 40 ms) relative to the PRACH resource period of the initial PRACH resource.

[0184] It can be found that the dynamic adjustment of the PRACH resource period of the PRACH resource can be achieved even without adjusting the PRACH configuration parameters.

[0185] It can be understood that when the target PRACH resource has a change only in the frequency domain resource relative to the initial PRACH resource, the dynamic signaling can only include the first indication information; when the target PRACH resource has a change only in the time domain resource relative to the initial PRACH resource, the dynamic signaling can only include the second indication information; and when the target PRACH resource has a change in both the frequency domain resource and the time domain resource relative to the initial PRACH resource, the dynamic signaling can include both the first indication information and the second indication information. In addition, N1 and N2 can be the same or different, and the above description of the setting of the N1 bits and the N2 bits is only an example and is not a limitation of the present application.

[0186] In some embodiments, the dynamic signaling can include the first indication information and the second indication information, the first indication information is used to indicate that the target PRACH resource has a change in the frequency domain resource or the time domain resource relative to the initial PRACH resource, and the second indication information is used to indicate the change amount corresponding to the change in the frequency domain resource or the time domain resource.

[0187] Referring to Figure 11 , Figure 11 is a schematic diagram of the dynamic signaling provided by an embodiment of the present application. As shown in Figure 11As shown, the dynamic signaling can include first indication information with 1 bit and second indication information with M bits.

[0188] The target PRACH resource can be indicated to have a change in frequency domain resource or a change in time domain resource relative to the initial PRACH resource by setting the 1 bit in the first indication information.

[0189] For example, the first information can be set to 1 to indicate that the target PRACH resource has a change in frequency domain resource relative to the initial PRACH resource. More specifically, the PRACH resource can be indicated to have a change in the number of ROs multiplexed in the frequency domain by setting to 1. At this time, the setting of the M bits of the second information can refer to the setting of the N1 bits in the Figure 10 The change in the number of ROs multiplexed in the frequency domain resource can be indicated by referring to the setting of the N1 bits in the

[0190] It can be found that the dynamic adjustment of the number of ROs multiplexed in the frequency domain of the PRACH resource can be achieved even without adjusting the msg1-FDM parameter.

[0191] For another example, the first information can be set to 00 to indicate that the target PRACH resource has a change in time domain resource relative to the initial PRACH resource. More specifically, the PRACH resource can be indicated to have a change in the PRACH resource period in the time domain by setting to 0. At this time, the setting of the M bits of the second information can refer to the setting of the N2 bits in the Figure 10 The change in the PRACH resource period in the time domain resource can be indicated by referring to the setting of the N2 bits in the

[0192] It can be found that the dynamic adjustment of the PRACH resource period of the PRACH resource can be achieved even without adjusting the PRACH configuration parameter.

[0193] It can be understood that the above setting of the 1 bit and the M bit is only an example and is not a limitation of the present application.

[0194] In some embodiments, the dynamic signaling indicating the change of the target PRACH resource relative to the initial PRACH resource includes: the dynamic signaling indicating time domain resource of the target PRACH resource increased or decreased relative to the initial PRACH resource.

[0195] The dynamic signaling can indicate an increased or decreased UL time domain resource by N1 bits. Taking N1 = 2 as an example: 00 can indicate that the target PRACH resource increases the first available UL time domain resource adjacent to the left of the RO relative to the original PRACH resource; 01 can indicate that the target PRACH resource increases the first available UL time domain resource adjacent to the right of the RO relative to the original PRACH resource; 10 can indicate that the target PRACH resource decreases the first available UL time domain resource relative to the original PRACH resource; and 11 can indicate that the target PRACH resource decreases the first two available UL time domain resources relative to the original PRACH resource.

[0196] It can be understood that the above setting of N1 bits is only an example and is not a limitation of the present application. In addition, the UL time domain resource can be an uplink subframe, a time slot, a symbol, or any suitable time domain resource.

[0197] In some embodiments, the dynamic signaling indicates the change of the target PRACH resource relative to the initial PRACH resource, including: the dynamic signaling indicates whether a resource in the initial PRACH resource is available.

[0198] The dynamic signaling can be indicated by enabling or disabling each RO in the initial PRACH resource, and by indicating the RO that can be enabled and the RO that needs to be disabled, the dynamic adjustment of the PRACH resource is achieved.

[0199] In some embodiments, the dynamic signaling can indicate whether the frequency domain resource and / or the time domain resource of the initial PRACH resource is available after being filtered according to the index of the frequency domain resource and / or the time domain resource.

[0200] Referring to Figure 12A through Figure 12C , Figure 12A through Figure 12C is a schematic diagram of the index of the initial PRACH resource provided by the embodiments of the present application. In the present application, the index mark Occ is the abbreviation of Occasion (occasion).

[0201] Figure 12A An example of the index of the initial PRACH resource with respect to the frequency domain resource is shown. As shown in Figure 12A , the index of the initial PRACH resource in the frequency domain can be Occ-F0~Occ-F3.

[0202] Figure 12B An example of the index of the initial PRACH resource with respect to the time domain resource is shown. As shown in Figure 12B , the index of the initial PRACH resource in the time domain can be Occ-T0~Occ-T7.

[0203] Figure 12CAn example of the index of the initial PRACH resource with respect to the frequency domain resource and the time domain resource is shown. As shown in Figure 12C the index of the initial PRACH resource in the frequency domain and the time domain can be Occ-0~Occ-31 in the order of frequency domain first and then time domain (in other implementations, the order of time domain first and then frequency domain can be adopted).

[0204] The dynamic signaling can indicate whether the frequency domain resource and / or the time domain resource of the initial PRACH resource is available after being screened by the modulo operation according to the index of the frequency domain resource and / or the time domain resource.

[0205] Taking N1=2 as an example: 00 can represent that the PRACH resource with the modulus value of 0 or the modulus value of 1 after the index number is subjected to the modulo operation with 2 is available or unavailable resource; 01 can represent that the PRACH resource with the modulus value of 0 after the index number is subjected to the modulo operation with 3 is available or unavailable resource; 10 can represent that the PRACH resource with the modulus value of 1 after the index number is subjected to the modulo operation with 3 is available or unavailable resource; and 11 can represent that the PRACH resource with the modulus value of 2 after the index number is subjected to the modulo operation with 3 is available or unavailable resource.

[0206] It can be understood that the above setting of N1 bits is only an example, and is not a limitation of the present application.

[0207] In addition, in terms of the time domain resource index, in addition to the configuration of the index in the unit of RO as shown in Figure 12B , alternatively, a time domain resource index configuration with a larger granularity can also be adopted, for example, the index configuration can be in the unit of slot, or in the unit of PRACH resource period, or in the unit of associated period, or in the unit of any suitable time domain resource, and then whether the frequency domain resource and / or the time domain resource of the initial PRACH resource is available after being screened by the modulo operation according to the index of the frequency domain resource and / or the time domain resource is indicated by the dynamic signaling in the above-described method, so as to realize the dynamic adjustment of the PRACH resource.

[0208] In some embodiments, the dynamic signaling indicating whether the resource in the initial PRACH resource is available comprises: the dynamic signaling indicating whether the frequency domain resource and / or the time domain resource of the initial PRACH resource is available after being screened by the division operation according to the index of the frequency domain resource and / or the time domain resource.

[0209] The dynamic signaling can indicate whether the frequency domain resource and / or the time domain resource of the initial PRACH resource is available after being screened by the division operation according to the index of the frequency domain resource and / or the time domain resource with respect to a specific value.

[0210] More specifically, the dynamic signaling can indicate that the frequency domain resource and / or the time domain resource of the initial PRACH resource is available or unavailable if the index of the frequency domain resource and / or the time domain resource is divided by a specific value and the result satisfies a set condition.

[0211] For example, the set condition can be that the result of the index divided by the specific value is an integer, or the result after rounding is a set value.

[0212] In some embodiments, the dynamic signaling indicates whether a resource in the initial PRACH resource is available, comprising: the dynamic signaling indicates whether the frequency domain resource and / or the time domain resource of the initial PRACH resource is available after being filtered according to a hash operation of the index of the frequency domain resource and / or the time domain resource.

[0213] The dynamic signaling can indicate that the frequency domain resource and / or the time domain resource of the initial PRACH resource is available or unavailable if the index of the frequency domain resource and / or the time domain resource is divided by a specific value and the result satisfies a set condition.

[0214] For example, the set condition can be that the result of the index divided by the specific value is an integer, or the result after rounding is a set value.

[0215] It can be understood that the dynamic signaling can indicate whether the frequency domain resource and / or the time domain resource of the initial PRACH resource is available after being filtered according to any suitable operation of the index of the frequency domain resource and / or the time domain resource, without being limited to the modulo operation, the division operation, and the hash operation described above.

[0216] In some embodiments, the dynamic signaling can indicate whether the corresponding PRACH resource in the initial PRACH resource is available through a bitmap or a codepoint value.

[0217] Optionally, the dynamic signaling can indicate whether the PRACH resource on the corresponding frequency domain resource in the initial PRACH resource is available through a bitmap or a codepoint value.

[0218] For example, referring to Figure 12A , the initial PRACH resource can be divided into 4 groups in the frequency domain, corresponding to indexes Occ-F0~Occ-F3, respectively. Therefore, a 4-bit bitmap or a 2-bit codepoint value can be used to indicate whether the PRACH resource on the corresponding frequency domain resource is available or unavailable.

[0219] For example, when 4-bit bitmap is used to indicate PRACH resource on corresponding frequency domain resource, the PRACH resource corresponding to frequency domain index Occ-F0~Occ-F3 can be indicated from low bit to high bit (or from high bit to low bit) of the bitmap, 1 in the bitmap can indicate that the PRACH resource corresponding to the index is available (or unavailable), and 0 in the bitmap can indicate that the PRACH resource corresponding to the index is unavailable (or available).

[0220] For example, when 2-bit codepoint value is used to indicate PRACH resource on corresponding frequency domain resource, 00, 01, 10, 11 can be used to indicate that the PRACH resource corresponding to frequency domain index Occ-F0~Occ-F3 is available or unavailable, respectively.

[0221] Optionally, the dynamic signaling can indicate whether the PRACH resource on the corresponding time domain resource in the initial PRACH resource is available through the bitmap or the codepoint value.

[0222] For example, referring to Figure 12B , the initial PRACH resource can be divided into 8 groups in the time domain, corresponding to index Occ-T0~Occ-T7, respectively, and therefore, 8-bit bitmap or 3-bit codepoint value can be used to indicate whether the PRACH resource on the corresponding time domain resource is available or unavailable.

[0223] For example, when 8-bit bitmap is used to indicate PRACH resource on corresponding time domain resource, the PRACH resource corresponding to time domain index Occ-T0~Occ-T7 can be indicated from low bit to high bit (or from high bit to low bit) of the bitmap, 1 in the bitmap can indicate that the PRACH resource corresponding to the index is available (or unavailable), and 0 in the bitmap can indicate that the PRACH resource corresponding to the index is unavailable (or available).

[0224] For example, when 3-bit codepoint value is used to indicate PRACH resource on corresponding time domain resource, 000, 001, 010, 011, 100, 101, 110, 111 can be used to indicate that the PRACH resource corresponding to time domain index Occ-T0~Occ-T7 is available or unavailable, respectively.

[0225] Optionally, the dynamic signaling can indicate whether the PRACH resource on the corresponding frequency domain resource and time domain resource in the initial PRACH resource is available through the bitmap or the codepoint value.

[0226] For example, referring to Figure 12C, the initial PRACH resource can be divided into 32 ROs in frequency domain and time domain, respectively corresponding to indexes Occ-0~Occ-31, thus, 32-bit bitmap or 5-bit codepoint value can be used to indicate whether the corresponding PRACH resource is available or unavailable. Among them, the corresponding mode of bitmap and codepoint value and RO is similar to the foregoing corresponding mode, which will not be described here.

[0227] It can be understood that, in terms of division and configuration of resource indexes in time domain, in addition to division and configuration of resource indexes in RO units as shown in Figure 12B , alternatively, division and configuration of resource indexes in time domain can also be performed in a larger granularity. For example, division and configuration of resource indexes in time domain can be performed in time slot units, or in PRACH resource period units, or in association period units, or in any suitable time domain resource units, and then, by means of bitmap or codepoint value in dynamic signaling, whether the PRACH resource of the corresponding time domain resource in the initial PRACH resource is available or not is indicated, to realize dynamic adjustment of the PRACH resource, in the manner as described above.

[0228] Optionally, the dynamic signaling can indicate whether the PRACH resource on the corresponding frequency domain resource and / or on the corresponding time domain resource in the initial PRACH resource is available or not through the bitmap and 1-bit enabling indication.

[0229] Among them, the indication mode of the bitmap and the PRACH resource on the corresponding frequency domain resource and / or on the corresponding time domain resource in the initial PRACH resource is the same as the foregoing, which will not be described here; the 1-bit enabling indication can indicate that the corresponding PRACH resource is available or unavailable (or, unavailable or available) by assigning 1 or 0.

[0230] In some embodiments, the dynamic signaling can be used to indicate the change amount of the PRACH resource corresponding to each SSB index in the initial PRACH resource.

[0231] The dynamic signaling can use N1 bits to indicate the change amount of the PRACH resource corresponding to each SSB index in the initial PRACH resource.

[0232] Optionally, the dynamic signaling can indicate the change in the frequency domain of the PRACH resource corresponding to each SSB index in the initial PRACH resource by setting N1 bits.

[0233] Taking N1=2 as an example: 00 can indicate that the frequency domain occasion of the PRACH resource corresponding to each SSB index in the initial PRACH resource is increased to 2 times in the frequency domain; 01 can indicate that the frequency domain occasion of the PRACH resource corresponding to each SSB index in the initial PRACH resource is increased to 4 times in the frequency domain; 00 can indicate that the frequency domain occasion of the PRACH resource corresponding to each SSB index in the initial PRACH resource is reduced to 1 / 2 in the frequency domain; and 00 can indicate that the frequency domain occasion of the PRACH resource corresponding to each SSB index in the initial PRACH resource is reduced to 1 / 4 in the frequency domain.

[0234] Optionally, the dynamic signaling can indicate the change in the time domain of the PRACH resource corresponding to each SSB index in the initial PRACH resource by setting N1 bits.

[0235] Taking N1=2 as an example: 00 can indicate that the PRACH resource period of the PRACH resource corresponding to each SSB index in the initial PRACH resource is increased to 2 times in the time domain; 01 can indicate that the PRACH resource period of the PRACH resource corresponding to each SSB index in the initial PRACH resource is increased to 4 times in the time domain; 00 can indicate that the PRACH resource period of the PRACH resource corresponding to each SSB index in the initial PRACH resource is reduced to 1 / 2 in the time domain; and 00 can indicate that the PRACH resource period of the PRACH resource corresponding to each SSB index in the initial PRACH resource is reduced to 1 / 4 in the time domain.

[0236] Optionally, the dynamic signaling can also set N2 bits to indicate the resource unit that changes. In other words, the dynamic signaling can set N2 bits to indicate the granularity of the initial PRACH resource that changes.

[0237] Taking N2=2 as an example: 00 can indicate that the resource unit that changes is a preamble, 01 can indicate that the resource unit that changes is an occasion; 10 can indicate that the resource unit that changes is an association period; and 11 can indicate that the resource unit that changes is a PRACH period.

[0238] It can be understood that the above setting of N1 bits and N2 bits is only an example and is not a limitation of the present application.

[0239] In some embodiments, the semi-static signaling can also include third indication information, which can indicate that the initial PRACH resource is divided into a plurality of PRACH resource subsets based on frequency domain resources and / or time domain resources; and the dynamic signaling can indicate whether each PRACH resource subset in the plurality of PRACH resource subsets is available.

[0240] The third indication information in the semi-static signaling can indicate that the initial PRACH resource is divided into multiple PRACH resource subsets based on frequency domain resources, for example, multiple subsets are divided in the frequency domain as shown in Figure 12A

[0241] Alternatively, the third indication information in the semi-static signaling can indicate that the initial PRACH resource is divided into multiple PRACH resource subsets based on time domain resources, for example, multiple subsets are divided in the time domain as shown in Figure 12B

[0242] Alternatively, the third indication information in the semi-static signaling can indicate that the initial PRACH resource is divided into multiple PRACH resource subsets based on frequency domain resources and time domain resources, for example, multiple subsets are divided in any suitable manner after the ROs are sorted by index as shown in Figure 12C

[0243] It can be understood that the indexes included in the subsets can be continuous or discontinuous, and the number of elements included in the subsets can be the same or different, which is not limited in the present application.

[0244] In the case where the static signaling also indicates that the initial PRACH resource is divided into multiple PRACH resource subsets based on frequency domain resources and / or time domain resources through the third indication information, the dynamic signaling can indicate the availability or unavailability of the corresponding subsets in the form of modulo operation, bitmap, code point value, etc. The indication methods of modulo operation, bitmap, code point value, etc. are similar to the above and will not be repeated here.

[0245] In some embodiments, after the initial PRACH resource is dynamically adjusted, the mapping between the SSB and the target PRACH resource can be remapped according to the existing mapping rule.

[0246] Based on the communication processing method of the present application, by first configuring the initial PRACH resource by semi-static signaling and then indicating the change of the target PRACH resource relative to the initial PRACH resource by dynamic signaling, the PRACH resource can be flexibly adjusted, the change of the number of random access devices can be dynamically adapted, the resources can be effectively utilized, and the system energy saving gain can be improved.

[0247] Figure 13 is a flowchart of a communication method provided by an embodiment of the present application. Figure 13 The method execution subject shown can be a terminal device, or the subject can be a chip in a terminal device. Wherein:

[0248] S1301, receiving semi-static signaling from a network device, the semi-static signaling being used to configure an initial PRACH resource. ​​​

[0249] In some embodiments, the semi-static signaling can be system message signaling.

[0250] In some embodiments, the semi-static signaling can be MIB signaling.

[0251] In some embodiments, the semi-static signaling can be SIB signaling, more specifically, the semi-static signaling can be any suitable signaling among SIB1~SIB20.

[0252] In some embodiments, the semi-static signaling can be RRC signaling.

[0253] In some embodiments, the semi-static signaling can comprise PRACH configuration information for configuring initial PRACH resource.

[0254] The PRACH configuration information can be understood as the random access configuration information as described in S202.

[0255] The PRACH configuration information can be used to indicate at least one parameter among the following: preamble format, reference slot number, subcarrier spacing corresponding to the reference slot, number of PRACH slots within the reference slot, starting symbol of the first RO within the PRACH slot, number of ROs within the PRACH slot, time length of the RO. Each parameter is explained below.

[0256] Preamble format, mainly indicates the format of long sequence preamble and the format of short sequence preamble, including 0, 1, 2, 3, A1, A2, A3, B1, B2, B3, B4, C0 or C2.

[0257] Slot number, or reference slot index, refers to the position of the reference slot where the RO is located in a system frame, the number of reference slots where the RO is located can be one or more.

[0258] Subcarrier spacing corresponding to the reference slot, refers to the subcarrier spacing corresponding to the reference slot as a reference, which can be 15 kHz or 60 kHz, for example.

[0259] Number of PRACH slots within a slot: One reference slot can include one or more normal slots, and the PRACH slot here refers to the normal slot containing ROs in the reference slot. Among them, the subcarrier spacing corresponding to the PRACH slot is greater than or equal to the subcarrier spacing corresponding to the reference slot, for example, the subcarrier spacing corresponding to the reference slot is 60 kHz, and the subcarrier spacing corresponding to the PRACH slot can be 120 kHz, 480 kHz or 960 kHz. For example, corresponding to the foregoing Figure 2 The subcarrier spacing corresponding to the PRACH slot in the schematic random access process can be determined by the subcarrier spacing used by the SIB1 signaling. The subcarrier spacing corresponding to the PRACH slot can also be understood as the random access subcarrier spacing or the initial access subcarrier spacing.

[0260] Some examples of the number of PRACH slots within a reference slot are as follows: for example, if the subcarrier spacing corresponding to the PRACH slot is 60 kHz, and the subcarrier spacing corresponding to the reference slot is 60 kHz, one reference slot includes one normal slot, and then the reference slot can include at most one PRACH slot; if the subcarrier spacing corresponding to the PRACH slot is greater than 60 kHz, for example, 120 kHz, 480 kHz or 960 kHz, and the subcarrier spacing corresponding to the reference slot is 60 kHz, one reference slot can include two or more normal slots, and then the reference slot can include one or more PRACH slots.

[0261] Starting symbol of the first RO within a PRACH slot, which is the index of the first OFDM symbol occupied by the first RO in a PRACH slot in the slot.

[0262] The number of ROs within a PRACH slot, which can be 1 or more, and the embodiments of the present application mainly describe the case of multiple ROs.

[0263] The time length of the RO (PRACH duration), for example, in the format of the short sequence format of the preamble, the time length of the RO is in units of OFDM symbols. The time length of one RO can occupy one or more OFDM symbols, wherein the number of OFDM symbols occupied by one RO is related to the preamble format.

[0264] In an alternative embodiment, the aforementioned parameters can be stored in a predefined table, and the first information can be an index in the table indicating the aforementioned parameters. That is, the first information can be index information, and the index indicates one or more of the aforementioned parameters.

[0265] Also, the terminal device and the network device can both obtain or configure the predefined table, and then the terminal device can query the predefined table to determine the parameters indicated by the first information after receiving the first information.

[0266] In some embodiments, the PRACH configuration information can be the Physical Random Access Channel Configuration Index (PRACH Config Index) in Tables 6.3.3.2-2 ~ 6.3.3.2-4 of Section 6.3.3.2 of 3GPP protocol TS 38.211. Based on the PRACH configuration index in these tables, the OFDM symbols occupied by the RO, i.e., the time domain resources of the RO, can be determined in the manner of Section 5.3.2 of TS 38.211. In other words, the PRACH configuration index can indicate the PRACH resource. These tables and the corresponding determination manner of OFDM symbols are incorporated by reference into the present application.

[0267] Referring to Figure 6 , Figure 6 is a schematic diagram of a PRACH resource provided by an embodiment of the present application. Through the PRACH configuration index as described above, the PRACH resource for sending the preamble can be configured.

[0268] Figure 6 Figures show examples of PRACH resources corresponding to a specific preamble bandwidth for a given preamble type. As Figure 6 indicated, the preamble can be sent in a subset of resources of a PRACH slot, which repeats every PRACH resource period.

[0269] The subset of resources of these PRACH slots can have multiple ROs in the frequency domain, which can be determined by the aforementioned msg1-FDM parameter.

[0270] For a given preamble type, corresponding to a specific preamble bandwidth, the total RACH time-frequency resources available to the cell can be generally expressed as:

[0271] • Configurable PRACH resource period, for example, the range can be from 10 ms to a maximum of 160 ms (based on parameters or tables in existing protocols);

[0272] • A set of configurable PRACH slots (i.e., time domain resources of ROs) within the PRACH resource period;

[0273] • Configurable frequency domain resources (i.e., frequency domain resources of ROs) within a PRACH slot, number of ROs in frequency domain.

[0274] It can be understood that, Figure 6 is only an example of PRACH resource configuration corresponding to a specific PRACH configuration index, and does not constitute a limitation on the present application.

[0275] It should be noted that as the technology evolves, the parameters in the foregoing table or the form of the table can change, for example, the table adds parameters or reduces parameters, and the parameter names in the table can also change. The PRACH configuration information in the embodiments of the present application is not limited to the table in the above examples. When the table parameters or the table form change, the PRACH configuration information can be obtained according to the table after the parameters change or the form changes, or the network device directly sends one or more of the above parameters through signaling.

[0276] In some embodiments, the PRACH configuration information in the semi-static signaling can be, for example, the first PRACH configuration index in the PRACH configuration index in the table 6.3.3.2-2~6.3.3.2-4 of section 6.3.3.2 of the protocol TS38.211, i.e., the semi-static signaling can include a first PRACH configuration index, and the first PRACH configuration index indicates an initial PRACH resource.

[0277] The terminal device can determine the first PRACH resource indicated by the first PRACH configuration index based on the first PRACH configuration index included in the semi-static signaling, through the foregoing parameter configuration and the determination manner of the OFDM symbol. Further, the terminal device can determine the first PRACH resource as the initial PRACH resource.

[0278] Based on this, the terminal device can determine the initial PRACH resource based on the semi-static signaling.

[0279] Referring to Figure 7 , Figure 7 is a schematic diagram of an initial PRACH resource provided by an embodiment of the present application.

[0280] As Figure 7 indicated, based on a specific first PRACH configuration index, the initial PRACH resource indicated thereby can be one RO in the frequency domain, and the PRACH resource period in the time domain is 80ms. The terminal device can determine the initial PRACH resource as shown in Figure 7 based on the specific first PRACH configuration index included in the semi-static signaling.

[0281] It can be understood that, Figure 7The initial PRACH resource shown is only an example of PRACH resource configuration and does not constitute a limitation on the present application.

[0282] In some embodiments, the semi-static signaling can further include first frequency domain resource indication information, the first frequency domain resource indication information being used to indicate that one or more frequency domain resources are additionally added on the basis of the frequency domain resources of the first PRACH resource. In this case, the first PRACH configuration index and the first frequency domain resource indication information jointly indicate the initial PRACH resource.

[0283] For example, the terminal device receives semi-static signaling from the network device, and the semi-static signaling can include a first PRACH configuration index and first frequency domain resource indication information. The terminal device can determine the first PRACH resource indicated by the first PRACH configuration index according to the first PRACH configuration index. Then, the terminal device can determine, according to the first frequency domain resource indication information, additional PRACH resources associated with the first PRACH resource on one or more frequency domain resources additionally indicated by the first frequency domain resource indication information, the additional PRACH resources corresponding to the first PRACH resource in the time domain. Finally, the terminal device can determine the first PRACH resource and the above-mentioned additional PRACH resources as the initial PRACH resource.

[0284] Referring to Figure 8 , Figure 8 is a schematic diagram of an initial PRACH resource provided by an embodiment of the present application. Figure 8 An example of the initial PRACH resource is shown when the first PRACH configuration index and the first frequency domain resource indication information are included in the semi-static signaling.

[0285] wherein, Figure 8 The first PRACH configuration index involved in Figure 7 The first PRACH configuration index involved in is the same as that in the first PRACH configuration index, and the first frequency domain resource indication information indicates that one frequency domain resource is additionally added on the basis of the frequency domain resources of the first PRACH resource. Therefore, Figure 8 The time domain resources of the initial PRACH resource in Figure 7 The time domain resources of the initial PRACH resource in are the same, and the PRACH resource period is 80ms, and there are two ROs in the frequency domain.

[0286] In some embodiments, the semi-static signaling can further include a second PRACH configuration index, i.e., the semi-static signaling can include a first PRACH configuration index and a second PRACH configuration index, wherein the second PRACH configuration index is different from the first PRACH configuration index, and in this case, the second PRACH configuration index indicates the initial PRACH resource.

[0287] That is, the terminal device can determine the second PRACH resource according to the second PRACH configuration index in the semi-static signaling, and determine the second PRACH resource as the initial PRACH resource.

[0288] Optionally, in the semi-static signaling, the first PRACH configuration index and the second PRACH configuration index can be distinguished by field names. For example, the field name identifying the first PRACH configuration index can be the same as the traditional field name, and the field name identifying the second PRACH configuration index can be different from the traditional field name.

[0289] Optionally, in the semi-static signaling, the first PRACH configuration index and the second PRACH configuration index can be distinguished by indicating the priority. For example, the priority of the second PRACH configuration index can be set to be higher than the priority of the first PRACH configuration index.

[0290] Optionally, the first PRACH configuration index and the second PRACH configuration index can be included in the semi-static signaling only in the case that the terminal device supports multiple PRACH configuration indexes, or only for terminal devices with the capability of supporting multiple PRACH configuration indexes, so as to save signaling overhead.

[0291] In some embodiments, the semi-static signaling can include the first PRACH configuration index and the second PRACH configuration index, wherein the second PRACH configuration index is different from the first PRACH configuration index, and the initial PRACH resource is the remaining resource after excluding the resource overlapping with the resource indicated by the first PRACH configuration index from the resource indicated by the second PRACH configuration index.

[0292] That is, the terminal device can determine the second PRACH resource according to the second PRACH configuration index in the semi-static signaling, determine the first PRACH resource according to the first PRACH configuration index, and finally determine the initial PRACH resource by excluding the resource overlapping with the first PRACH resource from the second PRACH resource.

[0293] Optionally, in the semi-static signaling, the first PRACH configuration index and the second PRACH configuration index can be distinguished by field names. For example, the field name identifying the first PRACH configuration index can be the same as the traditional field name, and the field name identifying the second PRACH configuration index can be different from the traditional field name.

[0294] Optionally, the first PRACH configuration index and the second PRACH configuration index can be distinguished by indicating the priority in the semi-static signaling. For example, the priority of the second PRACH configuration index can be set to be higher than the priority of the first PRACH configuration index.

[0295] Optionally, the first PRACH configuration index and the second PRACH configuration index can be included in the semi-static signaling only in the case that the terminal device supports multiple PRACH configuration indexes, or only for the terminal device with the capability of supporting multiple PRACH configuration indexes, so as to save the signaling overhead.

[0296] Referring to Figure 9A through Figure 9B , Figure 9A through Figure 9B is a schematic diagram of the initial PRACH resource provided by the embodiments of the present application.

[0297] Figure 9A An example of the initial PRACH resource is shown in the case that the first PRACH configuration index and the second PRACH configuration index are included in the semi-static signaling. Among them, Figure 9A the first PRACH configuration index involved in the Figure 7 is the same as the first PRACH configuration index involved in the , and the second PRACH configuration index is different from the first PRACH configuration index, the difference being that the PRACH resource period of the second PRACH resource indicated by the second PRACH configuration index is 40 ms. As shown in Figure 9A , the initial PRACH resource is the second PRACH resource indicated by the second PRACH configuration index.

[0298] Figure 9B An example of the initial PRACH resource is shown in the case that the first PRACH configuration index and the second PRACH configuration index are included in the semi-static signaling. Among them, Figure 9A the first PRACH configuration index involved in the Figure 7 is the same as the first PRACH configuration index involved in the , and the second PRACH configuration index is different from the first PRACH configuration index, the difference being that the PRACH resource period of the second PRACH resource indicated by the second PRACH configuration index is 40 ms. As shown in Figure 9B , the initial PRACH resource is the remaining resource after excluding the resource overlapping with the first PRACH resource indicated by the first PRACH configuration index from the second PRACH resource indicated by the second PRACH configuration index.

[0299] S1302, receiving dynamic signaling from the network device, the dynamic signaling indicating the change of the target PRACH resource relative to the initial PRACH resource.

[0300] In some embodiments, the dynamic signaling can be DCI signaling.

[0301] In some embodiments, the dynamic signaling can include first indication information and / or second indication information, the first indication information being used to indicate a change of a frequency domain resource of the target PRACH resource relative to the initial PRACH resource, and the second indication information being used to indicate a change of a time domain resource of the target PRACH resource relative to the initial PRACH resource. See Figure 10 , which is a schematic diagram of the dynamic signaling provided by the embodiments of the present application. As shown in Figure 10 , the dynamic signaling can include first indication information with N1 bits and / or second indication information with N2 bits.

[0302] The change of the frequency domain resource of the target PRACH resource relative to the initial PRACH resource can be indicated by setting the N1 bits in the first indication information. More specifically, the number of ROs that the PRACH resource can multiplex in the frequency domain can be dynamically adjusted by the first information.

[0303] Taking N1 = 2 as an example: 00 can represent an increase of 1 frequency domain occasion relative to the initial PRACH resource in the frequency domain; 01 can represent an increase of 2 frequency domain occasions relative to the initial PRACH resource in the frequency domain; 10 can represent a decrease of 1 frequency domain occasion relative to the initial PRACH resource in the frequency domain; and 11 can represent a decrease of 2 frequency domain occasions relative to the initial PRACH resource in the frequency domain. Alternatively, 00 can represent that the frequency domain occasion of the target PRACH resource in the frequency domain is doubled relative to the initial PRACH resource; 01 can represent that the frequency domain occasion of the target PRACH resource in the frequency domain is quadrupled relative to the initial PRACH resource; 00 can represent that the frequency domain occasion of the target PRACH resource in the frequency domain is reduced to 1 / 2 relative to the initial PRACH resource; and 00 can represent that the frequency domain occasion of the target PRACH resource in the frequency domain is reduced to 1 / 4 relative to the initial PRACH resource.

[0304] It can be found that even without adjusting the msg1-FDM parameter, the dynamic adjustment of the number of ROs that the PRACH resource can multiplex in the frequency domain can also be achieved.

[0305] The change of the time domain resource of the target PRACH resource relative to the initial PRACH resource can be indicated by setting the N2 bits in the second indication information. More specifically, the change of the PRACH resource period of the PRACH resource in the time domain can be dynamically adjusted by the second information.

[0306] Taking N2=2 as an example: 00 can represent that the PRACH resource period of the target PRACH resource is increased to 2 times (for example, the period is changed from 40 ms to 80 ms) relative to the PRACH resource period of the initial PRACH resource; 01 can represent that the PRACH resource period of the target PRACH resource is increased to 4 times (for example, the period is changed from 40 ms to 160 ms) relative to the PRACH resource period of the initial PRACH resource; 10 can represent that the PRACH resource period of the target PRACH resource is reduced to 1 / 2 (for example, the period is changed from 160 ms to 80 ms) relative to the PRACH resource period of the initial PRACH resource; and 11 can represent that the PRACH resource period of the target PRACH resource is reduced to 1 / 4 (for example, the period is changed from 160 ms to 40 ms) relative to the PRACH resource period of the initial PRACH resource.

[0307] It can be found that even if the PRACH configuration parameters are not adjusted, the dynamic adjustment of the PRACH resource period of the PRACH resource can be implemented.

[0308] It can be understood that when the target PRACH resource only has changes in the frequency domain resource relative to the initial PRACH resource, the dynamic signaling can only include the first indication information; when the target PRACH resource only has changes in the time domain resource relative to the initial PRACH resource, the dynamic signaling can only include the second indication information; and when the target PRACH resource has changes in both the frequency domain resource and the time domain resource relative to the initial PRACH resource, the dynamic signaling can include both the first indication information and the second indication information. In addition, the above setting of the N1 bits and the N2 bits is only an example, and is not a limitation to the present application.

[0309] In some embodiments, the dynamic signaling can include the first indication information and the second indication information, the first indication information is used to indicate that the target PRACH resource has changes in the frequency domain resource or the time domain resource relative to the initial PRACH resource, and the second indication information is used to indicate a change amount corresponding to the changes in the frequency domain resource or the time domain resource.

[0310] Referring to Figure 11 , Figure 11 is a schematic diagram of the dynamic signaling provided by the embodiments of the present application. As shown in Figure 11 , the dynamic signaling can include first indication information with 1 bit and second indication information with M bits.

[0311] The 1 bit in the first indication information can be set to indicate that the target PRACH resource has changes in the frequency domain resource or has changes in the time domain resource relative to the initial PRACH resource.

[0312] For example, the first information can be set to 1 to indicate that the target PRACH resource has a change in frequency domain resource relative to the initial PRACH resource. More specifically, it can be indicated by setting to 1 that the number of ROs that the PRACH resource can multiplex in the frequency domain has a change. At this time, the setting of the M bits of the second information can refer to the setting of the N1 bits in the above-mentioned Figure 10 The change amount of the number of ROs multiplexed in the frequency domain resource can be indicated by the setting of the N1 bits, and details are not repeated here.

[0313] It can be found that even without adjusting the msg1-FDM parameter, dynamic adjustment of the number of ROs that the PRACH resource can multiplex in the frequency domain can be achieved.

[0314] For another example, the first information can be set to 00 to indicate that the target PRACH resource has a change in time domain resource relative to the initial PRACH resource. More specifically, it can be indicated by setting to 0 that the PRACH resource period of the PRACH resource in the time domain has a change. At this time, the setting of the M bits of the second information can refer to the setting of the N2 bits in the above-mentioned Figure 10 The change amount of the PRACH resource period in the time domain resource can be indicated by the setting of the N2 bits, and details are not repeated here.

[0315] It can be found that even without adjusting the PRACH configuration parameter, dynamic adjustment of the PRACH resource period of the PRACH resource can be achieved.

[0316] It can be understood that the above-mentioned settings of 1 bit and M bits are only examples and are not a limitation of the present application.

[0317] In some embodiments, the dynamic signaling indicates the change of the target PRACH resource relative to the initial PRACH resource, including: the dynamic signaling indicates the time domain resource of the target PRACH resource relative to the initial PRACH resource.

[0318] The dynamic signaling can indicate the increased or decreased UL time domain resource by N1 bits. Taking N1=2 as an example: 00 can indicate that the target PRACH resource increases the first available UL time domain resource adjacent to the left relative to the original PRACH resource; 01 can indicate that the target PRACH resource increases the first available UL time domain resource adjacent to the right relative to the original PRACH resource; 10 can indicate that the target PRACH resource decreases the first available UL time domain resource based on the original PRACH resource; and 11 can indicate that the target PRACH resource decreases the first two available UL time domain resources based on the original PRACH resource.

[0319] It can be understood that the above setting of N1 bits is only an example, and is not a limitation to the present application. And the UL time domain resource can be a subframe, a time slot, a symbol of uplink, or any suitable time domain resource.

[0320] In some embodiments, the dynamic signaling indicates the change of the target PRACH resource relative to the initial PRACH resource, including: the dynamic signaling indicates whether the resources in the initial PRACH resource are available.

[0321] The dynamic signaling can be indicated by enabling or disabling each RO in the initial PRACH resource, and the dynamic adjustment of the PRACH resource is achieved by indicating the RO that can be enabled and the RO that needs to be disabled.

[0322] In some embodiments, the dynamic signaling can indicate whether the frequency domain resource and / or the time domain resource of the initial PRACH resource is available after being screened by performing a modulo operation according to the index of the frequency domain resource and / or the time domain resource.

[0323] Referring to Figure 12A through Figure 12C , Figure 12A through Figure 12C is a schematic diagram of the index of the initial PRACH resource provided by the embodiments of the present application. In the present application, the index mark Occ is the abbreviation of Occasion (occasion).

[0324] Figure 12A An example of the index of the initial PRACH resource with respect to the frequency domain resource is shown. As Figure 12A shown, the index of the initial PRACH resource in the frequency domain can be Occ-F0~Occ-F3.

[0325] Figure 12B An example of the index of the initial PRACH resource with respect to the time domain resource is shown. As Figure 12B shown, the index of the initial PRACH resource in the time domain can be Occ-T0~Occ-T7.

[0326] Figure 12C An example of the index of the initial PRACH resource with respect to the frequency domain resource and the time domain resource is shown. As Figure 12C shown, the index of the initial PRACH resource in the frequency domain and the time domain can be Occ-0~Occ-31 in the order of frequency domain first and then time domain (in other implementation manners, in the order of time domain first and then frequency domain).

[0327] The dynamic signaling can indicate whether the frequency domain resource and / or the time domain resource of the initial PRACH resource is available after being screened by performing a modulo operation according to the index of the frequency domain resource and / or the time domain resource by using N1 bits.

[0328] Taking N1=2 as an example: 00 can represent that the PRACH resource with a modulus value of 0 or a modulus value of 1 after the index number is subjected to a modulo operation with respect to 2 is an available or unavailable resource; 01 can represent that the PRACH resource with a modulus value of 0 after the index number is subjected to a modulo operation with respect to 3 is an available or unavailable resource; 10 can represent that the PRACH resource with a modulus value of 1 after the index number is subjected to a modulo operation with respect to 3 is an available or unavailable resource; and 11 can represent that the PRACH resource with a modulus value of 2 after the index number is subjected to a modulo operation with respect to 3 is an available or unavailable resource.

[0329] It can be understood that the above setting of N1 bits is merely an example and is not a limitation of the present application.

[0330] In addition, in terms of time domain resource indexes, in addition to configuring indexes in units of ROs as shown in Figure 12B Alternatively, time domain resource index configuration can be performed in a larger granularity, for example, in units of slots, or in units of PRACH resource periods, or in units of association periods, or in units of any suitable time domain resource, and then whether the frequency domain resources and / or time domain resources of the initial PRACH resources are available after being subjected to a modulo operation with respect to the indexes of the frequency domain resources and / or time domain resources is indicated by dynamic signaling in the above-described manner, to achieve dynamic adjustment of the PRACH resources.

[0331] In some embodiments, the dynamic signaling indicating whether the resources in the initial PRACH resources are available comprises: the dynamic signaling indicating whether the frequency domain resources and / or time domain resources of the initial PRACH resources are available after being subjected to a division operation with respect to the indexes of the frequency domain resources and / or time domain resources.

[0332] The dynamic signaling can indicate whether the frequency domain resources and / or time domain resources of the initial PRACH resources are available after being subjected to a division operation with respect to the indexes of the frequency domain resources and / or time domain resources with respect to a specific value.

[0333] More specifically, the dynamic signaling can indicate that the frequency domain resources and / or time domain resources of the initial PRACH resources are available or unavailable after the indexes of the frequency domain resources and / or time domain resources are subjected to a division operation with respect to a specific value and the operation result satisfies a set condition.

[0334] For example, the set condition can be that the result of the division operation of the indexes with respect to the specific value is an integer, or the result after rounding is a set value.

[0335] In some embodiments, the dynamic signaling indicating whether the resources in the initial PRACH resources are available comprises: the dynamic signaling indicating whether the frequency domain resources and / or time domain resources of the initial PRACH resources are available after being subjected to a hash operation with respect to the indexes of the frequency domain resources and / or time domain resources.

[0336] The dynamic signaling can indicate that the frequency domain resource and / or the time domain resource of the initial PRACH resource is available or unavailable after the index of the frequency domain resource and / or the time domain resource is hashed and the result satisfies a set condition.

[0337] For example, the set condition can be that the result of the hashing of the index is an integer, or the result is a set value.

[0338] It can be understood that the dynamic signaling can indicate whether the frequency domain resource and / or the time domain resource of the initial PRACH resource is available after being filtered in any suitable operation manner according to the index of the frequency domain resource and / or the time domain resource, without being limited to the above-mentioned modulo operation, division operation, and hashing operation.

[0339] In some embodiments, the dynamic signaling can indicate whether the corresponding PRACH resource in the initial PRACH resource is available or unavailable through a bitmap or a codepoint value.

[0340] Optionally, the dynamic signaling can indicate whether the PRACH resource on the corresponding frequency domain resource in the initial PRACH resource is available or unavailable through a bitmap or a codepoint value.

[0341] For example, referring to Figure 12A The initial PRACH resource can be divided into 4 groups in the frequency domain, corresponding to the indexes Occ-F0~Occ-F3, respectively. Therefore, a 4-bit bitmap or a 2-bit codepoint value can be used to indicate whether the PRACH resource on the corresponding frequency domain resource is available or unavailable.

[0342] For example, when a 4-bit bitmap is used to indicate the PRACH resource on the corresponding frequency domain resource, the low bit to the high bit (or the high bit to the low bit) of the bitmap can correspond to the PRACH resource of the frequency domain indexes Occ-F0~Occ-F3, respectively. The 1 in the bitmap can indicate that the PRACH resource of the corresponding index is available (or unavailable), and the 0 in the bitmap can indicate that the PRACH resource of the corresponding index is unavailable (or available).

[0343] For example, when a 2-bit codepoint value is used to indicate the PRACH resource on the corresponding frequency domain resource, 00, 01, 10, and 11 can be used to indicate that the PRACH resource of the frequency domain indexes Occ-F0~Occ-F3 is available or unavailable, respectively.

[0344] Optionally, the dynamic signaling can indicate whether the PRACH resource on the corresponding time domain resource in the initial PRACH resource is available or unavailable through a bitmap or a codepoint value.

[0345] For example, referring to Figure 12B, the initial PRACH resource can be divided into 8 groups in time domain, corresponding to indexes Occ-T0~Occ-T7 respectively, thus, 8-bit bitmap or 3-bit codepoint value can be used to indicate the PRACH resource on the corresponding time domain resource is available or unavailable.

[0346] For example, when using 8-bit bitmap to indicate the PRACH resource on the corresponding time domain resource, the low bit to high bit (or high bit to low bit) of the bitmap can correspond to the PRACH resource of the frequency domain indexes Occ-T0~Occ-T7 respectively, 1 in the bitmap can indicate that the PRACH resource of the corresponding index is available (or unavailable), and 0 in the bitmap can indicate that the PRACH resource of the corresponding index is unavailable (or available).

[0347] For example, when using 3-bit codepoint value to indicate the PRACH resource on the corresponding time domain resource, 000, 001, 010, 011, 100, 101, 110, 111 can be used to indicate that the PRACH resource corresponding to the time domain indexes Occ-T0~Occ-T7 is available or unavailable respectively.

[0348] Optionally, the dynamic signaling can indicate whether the PRACH resource on the corresponding frequency domain resource and time domain resource in the initial PRACH resource is available through bitmap or codepoint value.

[0349] For example, referring to Figure 12C , the initial PRACH resource can be divided into 32 ROs in frequency domain and time domain, corresponding to indexes Occ-0~Occ-31 respectively, thus, 32-bit bitmap or 5-bit codepoint value can be used to indicate the corresponding PRACH resource is available or unavailable. The corresponding manner of bitmap and codepoint value and RO is similar to the foregoing corresponding manner, which will not be described here.

[0350] It can be understood that, in terms of the division and configuration of resource indexes in time domain, in addition to the division and configuration of resource indexes in RO units as shown in Figure 12B , alternatively, the division and configuration of resource indexes in time domain can also be in larger granularity. For example, the division and configuration of resource indexes in time domain can be in time slot units, or in PRACH resource period units, or in association period units, or in any suitable time domain resource units, and then the method as described above is used to indicate whether the PRACH resource of the corresponding time domain resource in the initial PRACH resource is available through bitmap or codepoint value in the dynamic signaling, to realize the dynamic adjustment of the PRACH resource.

[0351] Optionally, the dynamic signaling can indicate whether the PRACH resource on the corresponding frequency domain resource and / or on the corresponding time domain resource in the initial PRACH resource is available through bitmap and 1-bit enabling indication.

[0352] wherein the bitmap and the indication manner of the PRACH resource on the corresponding frequency domain resource and / or the corresponding time domain resource in the initial PRACH resource are the same as the foregoing, which will not be described herein; the 1-bit enabling indication can indicate that the corresponding PRACH resource is available or unavailable (or, unavailable or available) by being assigned as 1 or 0.

[0353] In some embodiments, dynamic signaling can be used to indicate the amount of change of the PRACH resource corresponding to each SSB index in the initial PRACH resource.

[0354] The dynamic signaling can indicate the amount of change of the PRACH resource corresponding to each SSB index in the initial PRACH resource by using N1 bits.

[0355] Optionally, the dynamic signaling can indicate the change in the frequency domain of the PRACH resource corresponding to each SSB index in the initial PRACH resource by setting the N1 bits.

[0356] Taking N1=2 as an example: 00 can indicate that the frequency domain occasion of the PRACH resource corresponding to each SSB index in the initial PRACH resource is increased to 2 times in the frequency domain; 01 can indicate that the frequency domain occasion of the PRACH resource corresponding to each SSB index in the initial PRACH resource is increased to 4 times in the frequency domain; 00 can indicate that the frequency domain occasion of the PRACH resource corresponding to each SSB index in the initial PRACH resource is reduced to 1 / 2 in the frequency domain; and 00 can indicate that the frequency domain occasion of the PRACH resource corresponding to each SSB index in the initial PRACH resource is reduced to 1 / 4 in the frequency domain.

[0357] Optionally, the dynamic signaling can indicate the change in the time domain of the PRACH resource corresponding to each SSB index in the initial PRACH resource by setting the N1 bits.

[0358] Taking N1=2 as an example: 00 can indicate that the PRACH resource period of the PRACH resource corresponding to each SSB index in the initial PRACH resource is increased to 2 times in the time domain; 01 can indicate that the PRACH resource period of the PRACH resource corresponding to each SSB index in the initial PRACH resource is increased to 4 times in the time domain; 00 can indicate that the PRACH resource period of the PRACH resource corresponding to each SSB index in the initial PRACH resource is reduced to 1 / 2 in the time domain; and 00 can indicate that the PRACH resource period of the PRACH resource corresponding to each SSB index in the initial PRACH resource is reduced to 1 / 4 in the time domain.

[0359] Optionally, the dynamic signaling can also set N2 bits to indicate the changed resource unit. In other words, the dynamic signaling can set N2 bits to indicate the granularity of the changed initial PRACH resource.

[0360] Taking N2=2 as an example: 00 can indicate that the changed resource unit is a preamble, 01 can indicate that the changed resource unit is an occasion; 10 can indicate that the changed resource unit is an association period; and 11 can indicate that the changed resource unit is a PRACH period, etc.

[0361] It can be understood that the above setting of N1 bits and N2 bits is only an example and is not a limitation of the present application.

[0362] In some embodiments, the semi-static signaling can further include third indication information, which can indicate that the initial PRACH resource is divided into a plurality of PRACH resource subsets based on frequency domain resources and / or time domain resources; and the dynamic signaling can indicate whether each PRACH resource subset in the plurality of PRACH resource subsets is available.

[0363] The third indication information in the semi-static signaling can indicate that the initial PRACH resource is divided into a plurality of PRACH resource subsets based on frequency domain resources, for example, a plurality of subsets are divided in the frequency domain as shown in Figure 12A .

[0364] Alternatively, the third indication information in the semi-static signaling can indicate that the initial PRACH resource is divided into a plurality of PRACH resource subsets based on time domain resources, for example, a plurality of subsets are divided in the time domain as shown in Figure 12B .

[0365] Alternatively, the third indication information in the semi-static signaling can indicate that the initial PRACH resource is divided into a plurality of PRACH resource subsets based on frequency domain resources and time domain resources, for example, a plurality of subsets are divided in any suitable manner after the ROs are sorted by index as shown in Figure 12C .

[0366] It can be understood that the indexes included in the subsets can be continuous or discontinuous, and the number of elements included in the subsets can be the same or different, which is not limited by the present application.

[0367] In the case where the static signaling can also indicate that the initial PRACH resource is divided into a plurality of PRACH resource subsets based on frequency domain resources and / or time domain resources through the third indication information, the dynamic signaling can indicate the availability or unavailability of the corresponding subset in the form of modulo operation, bitmap, code point value, etc. The indication modes of modulo operation, bitmap, code point value, etc. are similar to the foregoing and will not be repeated here.

[0368] In some embodiments, when the initial PRACH resource is dynamically adjusted, the mapping between the SSB and the target PRACH resource can be remapped according to the existing mapping rule.

[0369] Based on the communication processing method of the present application, by first configuring the initial PRACH resource by semi-static signaling, and then indicating the change of the target PRACH resource relative to the initial PRACH resource by dynamic signaling, the PRACH resource can be flexibly adjusted, the change of the random access device number can be dynamically adapted, the resources can be effectively utilized, and the system energy saving gain can be improved.

[0370] Figure 14 is a flowchart of a communication processing method provided by an embodiment of the present application. Figure 14 The method execution subject shown can be a network device, or the subject can be a chip in the network device. Wherein:

[0371] 1401. Send semi-static signaling to the terminal device, and the semi-static signaling is used to configure the initial PRACH resource.

[0372] In some embodiments, the semi-static signaling can be system message signaling.

[0373] In some embodiments, the semi-static signaling can be MIB signaling.

[0374] In some embodiments, the semi-static signaling can be SIB signaling, more specifically, the semi-static signaling can be any suitable signaling among SIB1-SIB20.

[0375] In some embodiments, the semi-static signaling can be RRC signaling.

[0376] In some embodiments, the semi-static signaling can include PRACH configuration information used to configure the initial PRACH resource.

[0377] The PRACH configuration information can be understood as the random access configuration information described in S202.

[0378] Wherein, the PRACH configuration information can be used to indicate at least one parameter in the following: preamble format, reference slot number, subcarrier spacing corresponding to the reference slot, number of PRACH slots in the reference slot, starting symbol of the first RO in the PRACH slot, number of ROs in the PRACH slot, and time length of the RO. Each parameter is explained below.

[0379] Preamble format primarily indicates the format of long sequence preambles and short sequence preambles, including 0, 1, 2, 3, A1, A2, A3, B1, B2, B3, B4, C0, or C2.

[0380] The reference slot number, or reference slot index, refers to the position of the reference slot where the RO is located within a system frame. The number of reference slots where the RO is located can be one or more.

[0381] The subcarrier spacing corresponding to the reference time slot refers to the subcarrier spacing corresponding to the time slot used as a reference. This subcarrier spacing can be, for example, 15kHz or 60kHz.

[0382] Number of PRACH slots within an aslot: A reference aslot may include one or more ordinary aslots. Here, a PRACH slot refers to an ordinary aslot within the reference aslot that contains ROs (Reference Arrays). The subcarrier spacing corresponding to a PRACH slot is greater than or equal to the subcarrier spacing corresponding to the reference aslot. For example, if the subcarrier spacing of the reference aslot is 60kHz, the subcarrier spacing of the PRACH slot could be 120kHz, 480kHz, or 960kHz. For example, corresponding to the aforementioned... Figure 2 The illustrated random access procedure shows that the subcarrier spacing corresponding to the PRACH slot can be determined by the subcarrier spacing used in SIB1 signaling. The subcarrier spacing corresponding to the PRACH slot can also be understood as the random access subcarrier spacing or the initial access subcarrier spacing.

[0383] Here are some examples of the number of PRACH slots within a reference slot: For instance, if the subcarrier spacing corresponding to a PRACH slot is 60kHz, and the subcarrier spacing corresponding to a reference slot is also 60kHz, then a reference slot includes one ordinary slot, and this reference slot can contain at most one PRACH slot. If the subcarrier spacing corresponding to a PRACH slot is greater than 60kHz, for example, it could be 120kHz, 480kHz, or 960kHz, and the subcarrier spacing corresponding to a reference slot is 60kHz, then a reference slot can include two or more ordinary slots, and this reference slot can include one or more PRACH slots.

[0384] The starting symbol of the first RO in a PRACH time slot is the index of the first OFDM symbol occupied by the first RO in that time slot.

[0385] The number of time-domain PRACH occasions within a PRACH slot, which can be 1 or multiple, embodiments of the present application mainly describe the case of multiple ROs.

[0386] The time length of an RO (PRACH duration), for example, in the format of a short sequence of a preamble, the time length of an RO is in units of OFDM symbols. The time length of an RO can occupy one or more OFDM symbols, wherein the number of OFDM symbols occupied by an RO is related to the preamble format.

[0387] In an optional implementation, the foregoing parameters can be stored in a predefined table, and the first information can be an index in the table for indicating the foregoing parameters. That is, the first information can be index information, and the index indicates one or more of the foregoing parameters.

[0388] In addition, the terminal device and the network device can both obtain or configure the predefined table, and then the terminal device can query the predefined table to determine the parameters indicated by the first information after receiving the first information.

[0389] In some embodiments, the PRACH configuration information can be a physical random access channel configuration index (PRACH Config Index) in Tables 6.3.3.2-2 to 6.3.3.2-4 of Section 6.3.3.2 of 3GPP protocol TS 38.211. Based on the PRACH configuration index in these tables, the OFDM symbols occupied by the RO, i.e., the time-domain resources of the RO, can be determined in the manner in Section 5.3.2 of TS 38.211. In other words, the PRACH configuration index can indicate the PRACH resources. These tables and the corresponding determination manner of OFDM symbols are incorporated by reference into the present application.

[0390] Referring to Figure 6 , Figure 6 is a schematic diagram of a PRACH resource provided by an embodiment of the present application. Through the PRACH configuration index as described above, the PRACH resource for sending a preamble can be configured.

[0391] Figure 6 Figures 1 to 3 show examples of PRACH resources corresponding to a specific preamble bandwidth for a given preamble type. As shown in Figure 6 , the preamble can be sent in a configurable resource subset of a PRACH slot, and the resource subset is repeated every PRACH resource period.

[0392] A subset of resources of these PRACH slots can have multiple ROs in the frequency domain, e.g., determined by the aforementioned msg1-FDM parameter.

[0393] For a given preamble type, corresponding to a specific preamble bandwidth, the total RACH time-frequency resources available to a cell can be generally expressed as:

[0394] • Configurable PRACH resource periodicity, e.g., ranging from 10 ms to a maximum of 160 ms (based on parameters or tables in existing protocols);

[0395] • Configurable set of PRACH slots (i.e., time-domain resources of ROs) within a PRACH resource periodicity;

[0396] • Configurable frequency-domain resources (i.e., frequency-domain resources of ROs) within a PRACH slot, number of ROs in the frequency domain.

[0397] It can be understood that, Figure 6 This is merely an example of PRACH resource configuration corresponding to a specific PRACH configuration index, and does not constitute a limitation on the present application.

[0398] It should be noted that as technology evolves, the parameters in the aforementioned table or the form of the table can change, e.g., the table can add parameters or reduce parameters, and the parameter names in the table can also change. The PRACH configuration information in the embodiments of the present application is not limited to the table in the above example. When the parameters in the table or the form of the table change, the PRACH configuration information can be obtained according to the table after the parameters change or the form changes, or the network device directly sends one or more of the above parameters through signaling.

[0399] In some embodiments, the PRACH configuration information in the semi-static signaling can be, for example, the first PRACH configuration index in the PRACH configuration index in Table 6.3.3.2-2~6.3.3.2-4 of Section 6.3.3.2 of the protocol TS 38.211, i.e., the semi-static signaling can include a first PRACH configuration index, which indicates an initial PRACH resource.

[0400] The terminal device can determine the first PRACH resource indicated by the first PRACH configuration index based on the first PRACH configuration index included in the semi-static signaling, through the determination manner of the aforementioned parameter configuration and OFDM symbol. Further, the terminal device can determine the first PRACH resource as the initial PRACH resource.

[0401] Based on this, the terminal device can determine the initial PRACH resource based on the semi-static signaling.

[0402] Referring toFigure 7 , Figure 7 is a schematic diagram of initial PRACH resources provided by an embodiment of the present application.

[0403] As shown in Figure 7 , based on a specific first PRACH configuration index, the initial PRACH resources indicated thereby can be one RO in the frequency domain and a PRACH resource period of 80 ms in the time domain. The terminal device can determine the initial PRACH resources as shown in Figure 7 based on the specific first PRACH configuration index included in the semi-static signaling.

[0404] It can be understood that Figure 7 the initial PRACH resources shown in are merely a PRACH resource configuration example and do not constitute a limitation on the present application.

[0405] In some embodiments, the semi-static signaling can further include first frequency domain resource indication information, the first frequency domain resource indication information being used to indicate that one or more frequency domain resources are additionally added on the basis of the frequency domain resources of the first PRACH resources. In this case, the first PRACH configuration index and the first frequency domain resource indication information jointly indicate the initial PRACH resources.

[0406] For example, the terminal device receives semi-static signaling from the network device, and the semi-static signaling can include a first PRACH configuration index and first frequency domain resource indication information. The terminal device can determine the first PRACH resources indicated by the first PRACH configuration index according to the first PRACH configuration index. Then, the terminal device can determine, according to the first frequency domain resource indication information, additional PRACH resources associated with the first PRACH resources on one or more frequency domain resources additionally indicated by the first frequency domain resource indication information, the additional PRACH resources corresponding to the first PRACH resources in the time domain. Finally, the terminal device can determine the first PRACH resources and the above-mentioned additional PRACH resources as the initial PRACH resources.

[0407] Referring to Figure 8 , Figure 8 is a schematic diagram of initial PRACH resources provided by an embodiment of the present application. Figure 8 shows an example of initial PRACH resources in the case where the semi-static signaling includes a first PRACH configuration index and first frequency domain resource indication information.

[0408] Among them, Figure 8 the first PRACH configuration index involved in Figure 7The first PRACH configuration index involved in the first PRACH resource is the same, and the first frequency domain resource indication information indicates that one frequency domain resource is additionally added on the basis of the frequency domain resource of the first PRACH resource. Therefore, Figure 8 The initial PRACH resource in the first PRACH resource is the same as the time domain resource of the initial PRACH resource in the second PRACH resource, and the PRACH resource period is 80 ms. Figure 7 The initial PRACH resource in the first PRACH resource is the same as the time domain resource of the initial PRACH resource in the second PRACH resource, and the PRACH resource period is 80 ms.

[0409] In some embodiments, the semi-static signaling can also include a second PRACH configuration index, that is, the semi-static signaling can include a first PRACH configuration index and a second PRACH configuration index, where the second PRACH configuration index is different from the first PRACH configuration index, and at this time, the second PRACH configuration index indicates the initial PRACH resource.

[0410] That is, the terminal device can determine the second PRACH resource according to the second PRACH configuration index in the semi-static signaling, and determine the second PRACH resource as the initial PRACH resource.

[0411] Optionally, in the semi-static signaling, the first PRACH configuration index and the second PRACH configuration index can be distinguished by field names. For example, the field name identifying the first PRACH configuration index can be the same as the traditional field name, and the field name identifying the second PRACH configuration index can be different from the traditional field name.

[0412] Optionally, in the semi-static signaling, the first PRACH configuration index and the second PRACH configuration index can be distinguished by indicating the priority. For example, the priority of the second PRACH configuration index can be set to be higher than the priority of the first PRACH configuration index.

[0413] Optionally, the first PRACH configuration index and the second PRACH configuration index can be included in the semi-static signaling only in the case that the terminal device supports multiple PRACH configuration indexes, or only for terminal devices with the capability of supporting multiple PRACH configuration indexes, so as to save signaling overhead.

[0414] In some embodiments, the semi-static signaling can include a first PRACH configuration index and a second PRACH configuration index, where the second PRACH configuration index is different from the first PRACH configuration index, and the initial PRACH resource is the remaining resource after excluding the resource overlapping with the resource indicated by the first PRACH configuration index from the resource indicated by the second PRACH configuration index.

[0415] That is, the terminal device can determine the second PRACH resource according to the second PRACH configuration index in the semi-static signaling, determine the first PRACH resource according to the first PRACH configuration index, and exclude the resource overlapping the first PRACH resource from the second PRACH resource, and finally determine the initial PRACH resource.

[0416] Optionally, in the semi-static signaling, the first PRACH configuration index and the second PRACH configuration index can be distinguished by field names. For example, the field name identifying the first PRACH configuration index can be the same as the traditional field name, and the field name identifying the second PRACH configuration index can be different from the traditional field name.

[0417] Optionally, in the semi-static signaling, the first PRACH configuration index and the second PRACH configuration index can be distinguished by indicating the priority. For example, the priority of the second PRACH configuration index can be set to be higher than the priority of the first PRACH configuration index.

[0418] Optionally, the first PRACH configuration index and the second PRACH configuration index can be included in the semi-static signaling only in the case that the terminal device supports multiple PRACH configuration indexes, or only for the terminal device with the capability of supporting multiple PRACH configuration indexes, so as to save signaling overhead.

[0419] Referring to Figure 9A through Figure 9B , Figure 9A through Figure 9B is a schematic diagram of the initial PRACH resource provided by the embodiment of the present application.

[0420] Figure 9A An example of the initial PRACH resource is shown in the case that the first PRACH configuration index and the second PRACH configuration index are included in the semi-static signaling. Among them, Figure 9A the first PRACH configuration index involved in the Figure 7 is the same as the first PRACH configuration index involved in the, and the second PRACH configuration index is different from the first PRACH configuration index, and the difference lies in that the PRACH resource period of the second PRACH resource indicated by the second PRACH configuration index is 40ms. As Figure 9A shown, the initial PRACH resource is the second PRACH resource indicated by the second PRACH configuration index.

[0421] Figure 9B An example of the initial PRACH resource is shown in the case that the first PRACH configuration index and the second PRACH configuration index are included in the semi-static signaling. Among them, Figure 9A the first PRACH configuration index involved in the Figure 7The first PRACH configuration index involved in the middle is the same, and the second PRACH configuration index is different from the first PRACH configuration index, and the difference lies in that the PRACH resource period of the second PRACH resource indicated by the second PRACH configuration index is 40ms. As shown in Figure 9B , the initial PRACH resource is the remaining resource after excluding the resource overlapping with the first PRACH resource indicated by the first PRACH configuration index from the second PRACH resource indicated by the second PRACH configuration index.

[0422] 1402, sending dynamic signaling to the terminal device, the dynamic signaling indicating the change of the target PRACH resource relative to the initial PRACH resource.

[0423] In some embodiments, the dynamic signaling can be DCI signaling.

[0424] In some embodiments, the dynamic signaling can include first indication information and / or second indication information, the first indication information being used to indicate the change of the frequency domain resource of the target PRACH resource relative to the initial PRACH resource, and the second indication information being used to indicate the change of the time domain resource of the target PRACH resource relative to the initial PRACH resource. See Figure 10 , is a schematic diagram of the dynamic signaling provided by the embodiments of the present application. As shown in Figure 10 , the dynamic signaling can include first indication information with N1 bits and / or second indication information with N2 bits.

[0425] The change of the frequency domain resource of the target PRACH resource relative to the initial PRACH resource can be indicated by setting the N1 bits in the first indication information. More specifically, the number of ROs that the PRACH resource can multiplex in the frequency domain can be dynamically adjusted by the first information.

[0426] Taking N1=2 as an example: 00 can represent an increase of 1 frequency domain occasion in the frequency domain relative to the initial PRACH resource; 01 can represent an increase of 2 frequency domain occasions in the frequency domain relative to the initial PRACH resource; 10 can represent a decrease of 1 frequency domain occasion in the frequency domain relative to the initial PRACH resource; and 11 can represent a decrease of 2 frequency domain occasions in the frequency domain relative to the initial PRACH resource. Alternatively, 00 can represent that the frequency domain occasion in the frequency domain of the target PRACH resource is doubled relative to the initial PRACH resource; 01 can represent that the frequency domain occasion in the frequency domain of the target PRACH resource is quadrupled relative to the initial PRACH resource; 00 can represent that the frequency domain occasion in the frequency domain of the target PRACH resource is reduced to 1 / 2 relative to the initial PRACH resource; and 00 can represent that the frequency domain occasion in the frequency domain of the target PRACH resource is reduced to 1 / 4 relative to the initial PRACH resource.

[0427] It can be found that the dynamic adjustment of the number of ROs that can be multiplexed in the frequency domain of PRACH resources can be realized even without adjusting the msg1-FDM parameter.

[0428] The change of the time domain resource of the target PRACH resource relative to the initial PRACH resource can be indicated by setting N2 bits in the second indication information. More specifically, the change of the PRACH resource period of the PRACH resource in the time domain can be dynamically adjusted by the second information.

[0429] Taking N2=2 as an example: 00 can represent that the PRACH resource period of the target PRACH resource is doubled (for example, the period is changed from 40 ms to 80 ms) relative to the PRACH resource period of the initial PRACH resource; 01 can represent that the PRACH resource period of the target PRACH resource is quadrupled (for example, the period is changed from 40 ms to 160 ms) relative to the PRACH resource period of the initial PRACH resource; 10 can represent that the PRACH resource period of the target PRACH resource is halved (for example, the period is changed from 160 ms to 80 ms) relative to the PRACH resource period of the initial PRACH resource; and 11 can represent that the PRACH resource period of the target PRACH resource is quartered (for example, the period is changed from 160 ms to 40 ms) relative to the PRACH resource period of the initial PRACH resource.

[0430] It can be found that the dynamic adjustment of the PRACH resource period of the PRACH resource can be realized even without adjusting the PRACH configuration parameter.

[0431] It can be understood that when the target PRACH resource only has a change in the frequency domain resource relative to the initial PRACH resource, the dynamic signaling can only include the first indication information; when the target PRACH resource only has a change in the time domain resource relative to the initial PRACH resource, the dynamic signaling can only include the second indication information; and when the target PRACH resource has changes in both the frequency domain resource and the time domain resource relative to the initial PRACH resource, the dynamic signaling can include both the first indication information and the second indication information. Moreover, the above settings of N1 bits and N2 bits are only examples and are not a limitation of the present application.

[0432] In some embodiments, the dynamic signaling can include the first indication information and the second indication information, the first indication information is used to indicate that the target PRACH resource has a change in the frequency domain resource or the time domain resource relative to the initial PRACH resource, and the second indication information is used to indicate a change amount corresponding to the change in the frequency domain resource or the time domain resource.

[0433] Referring toFigure 11 , Figure 11 is a schematic diagram of dynamic signaling provided by an embodiment of the present application. As shown in Figure 11 , the dynamic signaling can include first indication information with 1 bit and second indication information with M bits.

[0434] The 1 bit in the first indication information can be set to indicate that the target PRACH resource has a change in frequency domain resource or a change in time domain resource relative to the initial PRACH resource.

[0435] For example, the first information can be set to 1 to represent that the target PRACH resource has a change in frequency domain resource relative to the initial PRACH resource. More specifically, the PRACH resource can be set to 1 to represent that the number of ROs that can be multiplexed in the frequency domain has a change. At this time, the setting of the M bits of the second information can refer to the setting of the N1 bits in the Figure 10 , and indicate the change amount of the number of ROs multiplexed in the frequency domain resource, which will not be repeated here.

[0436] It can be found that even without adjusting the msg1-FDM parameter, the dynamic adjustment of the number of ROs that can be multiplexed in the frequency domain of the PRACH resource can be achieved.

[0437] For another example, the first information can be set to 00 to represent that the target PRACH resource has a change in time domain resource relative to the initial PRACH resource. More specifically, the PRACH resource can be set to 0 to represent that the PRACH resource period in the time domain has a change. At this time, the setting of the M bits of the second information can refer to the setting of the N2 bits in the Figure 10 , and indicate the change amount of the PRACH resource period in the time domain resource, which will not be repeated here.

[0438] It can be found that even without adjusting the PRACH configuration parameter, the dynamic adjustment of the PRACH resource period of the PRACH resource can be achieved.

[0439] It can be understood that the above setting of 1 bit and M bit is only an example and is not a limitation of the present application.

[0440] In some embodiments, the dynamic signaling indicating the change of the target PRACH resource relative to the initial PRACH resource includes: the dynamic signaling indicating the time domain resource of the target PRACH resource increasing or decreasing relative to the initial PRACH resource.

[0441] The dynamic signaling can indicate an increased or decreased UL time domain resource by N1 bits. Taking N1 = 2 as an example: 00 can indicate that the target PRACH resource increases the first available UL time domain resource adjacent to the left of the RO relative to the original PRACH resource; 01 can indicate that the target PRACH resource increases the first available UL time domain resource adjacent to the right of the RO relative to the original PRACH resource; 10 can indicate that the target PRACH resource decreases the first available UL time domain resource relative to the original PRACH resource; and 11 can indicate that the target PRACH resource decreases the first two available UL time domain resources relative to the original PRACH resource.

[0442] It can be understood that the above setting of N1 bits is only an example and is not a limitation of the present application. In addition, the UL time domain resource can be an uplink subframe, a time slot, a symbol, or any suitable time domain resource.

[0443] In some embodiments, the dynamic signaling indicates the change of the target PRACH resource relative to the initial PRACH resource, including: the dynamic signaling indicates whether a resource in the initial PRACH resource is available.

[0444] The dynamic signaling can be indicated by enabling or disabling each RO in the initial PRACH resource, and the dynamic adjustment of the PRACH resource can be achieved by indicating the RO that can be enabled and the RO that needs to be disabled.

[0445] In some embodiments, the dynamic signaling can indicate whether the frequency domain resource and / or the time domain resource of the initial PRACH resource is available after being screened by performing a modulo operation on the index of the frequency domain resource and / or the time domain resource.

[0446] Referring to Figure 12A through Figure 12C , Figure 12A through Figure 12C is a schematic diagram of the index of the initial PRACH resource provided by an embodiment of the present application. In the present application, the index mark Occ is a short form of Occasion (occasion).

[0447] Figure 12A An example of the index of the initial PRACH resource with respect to the frequency domain resource is shown. As shown in Figure 12A , the index of the initial PRACH resource in the frequency domain can be Occ-F0~Occ-F3.

[0448] Figure 12B An example of the index of the initial PRACH resource with respect to the time domain resource is shown. As shown in Figure 12B , the index of the initial PRACH resource in the time domain can be Occ-T0~Occ-T7.

[0449] Figure 12CAn example of the index of the initial PRACH resource with respect to the frequency domain resource and the time domain resource is shown. As shown in Figure 12C , the index of the initial PRACH resource in the frequency domain and the time domain can be Occ-0~Occ-31 in the order of the frequency domain first and then the time domain (in other implementations, the order of the time domain first and then the frequency domain can be adopted).

[0450] The dynamic signaling can indicate whether the frequency domain resource and / or the time domain resource of the initial PRACH resource is available after being screened by the modulo operation according to the index of the frequency domain resource and / or the time domain resource.

[0451] Taking N1=2 as an example: 00 can represent that the PRACH resource with the modulus value of 0 or the modulus value of 1 after the index number is subjected to the modulo operation with 2 is available or unavailable resource; 01 can represent that the PRACH resource with the modulus value of 0 after the index number is subjected to the modulo operation with 3 is available or unavailable resource; 10 can represent that the PRACH resource with the modulus value of 1 after the index number is subjected to the modulo operation with 3 is available or unavailable resource; and 11 can represent that the PRACH resource with the modulus value of 2 after the index number is subjected to the modulo operation with 3 is available or unavailable resource.

[0452] It can be understood that the above setting of N1 bits is only an example, and is not a limitation of the present application.

[0453] In addition, in terms of the time domain resource index, in addition to the configuration of the index in the unit of RO as shown in Figure 12B , alternatively, a time domain resource index configuration with a larger granularity can also be adopted, for example, the index configuration can be in the unit of slot, or in the unit of PRACH resource period, or in the unit of associated period, or in the unit of any suitable time domain resource, and then the method as described above is adopted to indicate whether the frequency domain resource and / or the time domain resource of the initial PRACH resource is available after being screened by the modulo operation according to the index of the frequency domain resource and / or the time domain resource through the dynamic signaling, so as to realize the dynamic adjustment of the PRACH resource.

[0454] In some embodiments, the dynamic signaling indicating whether the resource in the initial PRACH resource is available comprises: the dynamic signaling indicating whether the frequency domain resource and / or the time domain resource of the initial PRACH resource is available after being screened by the division operation according to the index of the frequency domain resource and / or the time domain resource.

[0455] The dynamic signaling can indicate whether the frequency domain resource and / or the time domain resource of the initial PRACH resource is available after being screened by the division operation according to the index of the frequency domain resource and / or the time domain resource with respect to a specific value.

[0456] More specifically, the dynamic signaling can indicate that the frequency domain resource and / or time domain resource of the initial PRACH resource is available or unavailable if the index of the frequency domain resource and / or time domain resource is divided by a specific value and the result satisfies a set condition.

[0457] For example, the set condition can be that the result of the index divided by the specific value is an integer, or the result after rounding is a set value.

[0458] In some embodiments, the dynamic signaling indicates whether a resource in the initial PRACH resource is available, comprising: the dynamic signaling indicates whether the frequency domain resource and / or time domain resource of the initial PRACH resource is available after being filtered according to a hash operation of the index of the frequency domain resource and / or time domain resource.

[0459] The dynamic signaling can indicate that the frequency domain resource and / or time domain resource of the initial PRACH resource is available or unavailable if the index of the frequency domain resource and / or time domain resource is subjected to a hash operation and the result satisfies a set condition.

[0460] For example, the set condition can be that the result of the index subjected to the hash operation is an integer, or the result is a set value.

[0461] It can be understood that the dynamic signaling can indicate whether the frequency domain resource and / or time domain resource of the initial PRACH resource is available after being filtered according to the index of the frequency domain resource and / or time domain resource in any suitable operation manner, without being limited to the above-described modulo operation, division operation, hash operation.

[0462] In some embodiments, the dynamic signaling can indicate whether the corresponding PRACH resource in the initial PRACH resource is available through a bitmap or a codepoint value.

[0463] Optionally, the dynamic signaling can indicate whether the PRACH resource on the corresponding frequency domain resource in the initial PRACH resource is available through a bitmap or a codepoint value.

[0464] For example, referring to Figure 12A , the initial PRACH resource can be divided into 4 groups in the frequency domain, corresponding to indexes Occ-F0~Occ-F3 respectively, and therefore, a 4-bit bitmap or a 2-bit codepoint value can be used to indicate whether the PRACH resource on the corresponding frequency domain resource is available or unavailable.

[0465] For example, when 4-bit bitmap is used to indicate PRACH resource on corresponding frequency domain resource, the PRACH resource corresponding to frequency domain index Occ-F0~Occ-F3 can be indicated from low bit to high bit (or from high bit to low bit) of the bitmap, 1 in the bitmap can indicate that the PRACH resource corresponding to the index is available (or unavailable), and 0 in the bitmap can indicate that the PRACH resource corresponding to the index is unavailable (or available).

[0466] For example, when 2-bit codepoint value is used to indicate PRACH resource on corresponding frequency domain resource, 00, 01, 10, 11 can be used to indicate that the PRACH resource corresponding to frequency domain index Occ-F0~Occ-F3 is available or unavailable, respectively.

[0467] Optionally, the dynamic signaling can indicate whether the PRACH resource on the corresponding time domain resource in the initial PRACH resource is available through the bitmap or the codepoint value.

[0468] For example, referring to Figure 12B The initial PRACH resource can be divided into 8 groups in the time domain, corresponding to index Occ-T0~Occ-T7, respectively, and therefore, 8-bit bitmap or 3-bit codepoint value can be used to indicate whether the PRACH resource on the corresponding time domain resource is available or unavailable.

[0469] For example, when 8-bit bitmap is used to indicate PRACH resource on corresponding time domain resource, the PRACH resource corresponding to time domain index Occ-T0~Occ-T7 can be indicated from low bit to high bit (or from high bit to low bit) of the bitmap, 1 in the bitmap can indicate that the PRACH resource corresponding to the index is available (or unavailable), and 0 in the bitmap can indicate that the PRACH resource corresponding to the index is unavailable (or available).

[0470] For example, when 3-bit codepoint value is used to indicate PRACH resource on corresponding time domain resource, 000, 001, 010, 011, 100, 101, 110, 111 can be used to indicate that the PRACH resource corresponding to time domain index Occ-T0~Occ-T7 is available or unavailable, respectively.

[0471] Optionally, the dynamic signaling can indicate whether the PRACH resource on the corresponding frequency domain resource and time domain resource in the initial PRACH resource is available through the bitmap or the codepoint value.

[0472] For example, referring to Figure 12C, the initial PRACH resource can be divided into 32 ROs in frequency domain and time domain, respectively corresponding to indexes Occ-0~Occ-31, thus, 32-bit bitmap or 5-bit codepoint value can be used to indicate whether the corresponding PRACH resource is available or unavailable. Among them, the corresponding mode of bitmap and codepoint value and RO is similar to the foregoing corresponding mode, which will not be described here.

[0473] It can be understood that, in terms of division and configuration of resource indexes in time domain, in addition to division and configuration of resource indexes in RO units as shown in Figure 12B , alternatively, division and configuration of resource indexes in time domain can also be performed in a larger granularity. For example, division and configuration of resource indexes in time domain can be performed in time slot units, or in PRACH resource period units, or in association period units, or in any suitable time domain resource units, and then, by means of bitmap or codepoint value in dynamic signaling, whether the PRACH resource of the corresponding time domain resource in the initial PRACH resource is available or not is indicated, to realize dynamic adjustment of the PRACH resource, in the manner as described above.

[0474] Optionally, the dynamic signaling can indicate whether the PRACH resource on the corresponding frequency domain resource and / or on the corresponding time domain resource in the initial PRACH resource is available or not by means of bitmap and 1-bit enabling indication.

[0475] Among them, the indication mode of bitmap and the PRACH resource on the corresponding frequency domain resource and / or on the corresponding time domain resource in the initial PRACH resource is the same as the foregoing, which will not be described here; the 1-bit enabling indication can indicate that the corresponding PRACH resource is available or unavailable (or, unavailable or available) by assigning 1 or 0.

[0476] In some embodiments, the dynamic signaling can be used to indicate the change amount of the PRACH resource corresponding to each SSB index in the initial PRACH resource.

[0477] The dynamic signaling can use N1 bits to indicate the change amount of the PRACH resource corresponding to each SSB index in the initial PRACH resource.

[0478] Optionally, the dynamic signaling can indicate the change in the frequency domain of the PRACH resource corresponding to each SSB index in the initial PRACH resource by setting N1 bits.

[0479] Taking N1=2 as an example: 00 can indicate that the frequency domain occasion of the PRACH resource corresponding to each SSB index in the initial PRACH resource is increased to 2 times in the frequency domain; 01 can indicate that the frequency domain occasion of the PRACH resource corresponding to each SSB index in the initial PRACH resource is increased to 4 times in the frequency domain; 00 can indicate that the frequency domain occasion of the PRACH resource corresponding to each SSB index in the initial PRACH resource is reduced to 1 / 2 in the frequency domain; and 00 can indicate that the frequency domain occasion of the PRACH resource corresponding to each SSB index in the initial PRACH resource is reduced to 1 / 4 in the frequency domain.

[0480] Optionally, the dynamic signaling can indicate the change in the time domain of the PRACH resource corresponding to each SSB index in the initial PRACH resource by setting N1 bits.

[0481] Taking N1=2 as an example: 00 can indicate that the PRACH resource period of the PRACH resource corresponding to each SSB index in the initial PRACH resource is increased to 2 times in the time domain; 01 can indicate that the PRACH resource period of the PRACH resource corresponding to each SSB index in the initial PRACH resource is increased to 4 times in the time domain; 00 can indicate that the PRACH resource period of the PRACH resource corresponding to each SSB index in the initial PRACH resource is reduced to 1 / 2 in the time domain; and 00 can indicate that the PRACH resource period of the PRACH resource corresponding to each SSB index in the initial PRACH resource is reduced to 1 / 4 in the time domain.

[0482] Optionally, the dynamic signaling can further set N2 bits to indicate the resource unit that changes. In other words, the dynamic signaling can set N2 bits to indicate the granularity of the initial PRACH resource that changes.

[0483] Taking N2=2 as an example: 00 can indicate that the resource unit that changes is a preamble, 01 can indicate that the resource unit that changes is an occasion; 10 can indicate that the resource unit that changes is an association period; and 11 can indicate that the resource unit that changes is a PRACH period.

[0484] It can be understood that the above setting of N1 bits and N2 bits is only an example and is not a limitation of the present application.

[0485] In some embodiments, the semi-static signaling can further include third indication information, which can indicate that the initial PRACH resource is divided into a plurality of PRACH resource subsets based on frequency domain resources and / or time domain resources; and the dynamic signaling can indicate whether each PRACH resource subset in the plurality of PRACH resource subsets is available.

[0486] The third indication information in the semi-static signaling can indicate that the initial PRACH resource is divided into multiple PRACH resource subsets based on frequency domain resources, for example, multiple subsets are divided in the frequency domain as shown in Figure 12A

[0487] Alternatively, the third indication information in the semi-static signaling can indicate that the initial PRACH resource is divided into multiple PRACH resource subsets based on time domain resources, for example, multiple subsets are divided in the time domain as shown in Figure 12B

[0488] Alternatively, the third indication information in the semi-static signaling can indicate that the initial PRACH resource is divided into multiple PRACH resource subsets based on frequency domain resources and time domain resources, for example, multiple subsets are divided in any suitable manner after the ROs are sorted by index as shown in Figure 12C

[0489] It can be understood that the indexes included in the subsets can be continuous or discontinuous, and the number of elements included in the subsets can be the same or different, which is not limited by the present application.

[0490] In the case where the static signaling also indicates that the initial PRACH resource is divided into multiple PRACH resource subsets based on frequency domain resources and / or time domain resources through the third indication information, the dynamic signaling can indicate the availability or unavailability of the corresponding subsets in the form of modulo operation, bitmap, code point value, etc. The indication methods of modulo operation, bitmap, code point value, etc. are similar to the above and will not be repeated here.

[0491] In some embodiments, when the initial PRACH resource is dynamically adjusted, the mapping between the SSB and the target PRACH resource can be remapped according to the existing mapping rule.

[0492] Based on the communication processing method of the present application, by first configuring the initial PRACH resource by semi-static signaling and then indicating the change of the target PRACH resource relative to the initial PRACH resource by dynamic signaling, the PRACH resource can be flexibly adjusted, the change of the number of random access devices can be dynamically adapted, the resources can be effectively utilized, and the system energy saving gain can be improved.

[0493] Figure 15 FIG. 1 is a structural schematic diagram of a communication device according to an embodiment of the present application. Figure 15 The communication device 1500 shown can be a terminal device, a device in a terminal device, or a device that can be matched with a terminal device. Figure 15 The communication device shown can be a network device, a device in a network device, or a device that can be matched with a network device.​​​

[0494] Figure 15 The communication apparatus 1500 shown can include a communication unit 1501 and a processing unit 1502. Specifically, the processing unit 1502 is configured to process data, which can be data received by the communication unit 1501, and the processed data can also be transmitted by the communication unit 1501.

[0495] Specifically, the processing unit 1502 is configured to perform the functions of processing data of the terminal device or the network device in the foregoing method embodiments. For other possible implementation manners of the communication apparatus, reference can be made to the foregoing description of the method embodiments of the application. Figure 13 through Figure 14 For the related description of the functions of the terminal device or the network device in the corresponding method embodiments, no further description is given here.

[0496] Figure 16 FIG. 16 is a structural schematic diagram of a communication apparatus provided by an embodiment of the application. The communication apparatus 1600 can be a terminal device or a network device in the foregoing method embodiments, and can also be a chip, a chip system, or a processor, etc. that supports the terminal device or the network device to implement the foregoing method. The communication apparatus can be used to implement the method described in the foregoing method embodiments, and specific implementation can be referred to the foregoing description of the method embodiments.

[0497] The communication apparatus 1600 can include one or more processors 1601. The processor 1601 can be a general-purpose processor or a special-purpose processor, etc. For example, it can be a baseband processor or a central processor. The baseband processor can be configured to process a communication protocol and communication data, and the central processor can be configured to control the communication apparatus (such as a base station, a baseband chip, a terminal, a terminal chip, a DU or a CU, etc.), execute a software program, and process data of the software program.

[0498] Optionally, the communication apparatus 1600 can include one or more memories 1602, which can store instructions 1604 that can be run on the processor 1601, so that the communication apparatus 1600 performs the method described in the foregoing method embodiments. Optionally, the memory 1602 can also store data. The processor 1601 and the memory 1602 can be separately arranged, or can be integrated together.

[0499] Optionally, the communication apparatus 1600 can further include a transceiver 1605, an antenna 1606. The transceiver 1605 can be referred to as a transceiving unit, a transceiver, or a transceiving circuit, etc., and is configured to implement a transceiving function. The transceiver 1605 can include a receiver and a transmitter. The receiver can be referred to as a receiver or a receiving circuit, etc., and is configured to implement a receiving function. The transmitter can be referred to as a transmitter or a transmitting circuit, etc., and is configured to implement a transmitting function. Among them, Figure 15 The processing unit 1502 shown can be the processor 1601. The communication unit 1501 can be the transceiver 1605.

[0500] In another possible design, the processor 1601 can include a transceiver for implementing the receiving and sending functions. For example, the transceiver can be a transceiver circuit, or an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and sending functions can be separate or integrated together. The transceiver circuit, interface, or interface circuit described above can be used for reading and writing of codes / data, or the transceiver circuit, interface, or interface circuit described above can be used for transmission or transfer of signals.

[0501] In yet another possible design, the processor 1601 can optionally store instructions 1603, which, when executed on the processor 1601, can cause the communication apparatus 1600 to perform the methods described in the above method embodiments. The instructions 1603 can be fixed in the processor 1601, in which case the processor 1601 can be implemented by hardware.

[0502] The communication apparatus described in the above embodiments can be a terminal device or a network device, but the scope of the communication apparatus described in the embodiments of the present application is not limited thereto, and the structure of the communication apparatus can not be limited by Figure 16 . The communication apparatus can be a standalone device or can be part of a larger device. For example, the communication apparatus can be:

[0503] (1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem;

[0504] (2) a set of one or more ICs, which can optionally also include a storage component for storing data and instructions;

[0505] (3) an ASIC, such as a modem (MSM);

[0506] (4) a module that can be embedded in other devices;

[0507] (5) a receiver, a terminal, a smart terminal, a cellular phone, a wireless device, a handset, a mobile unit, a car device, a network device, a cloud device, an artificial intelligence device, etc.;

[0508] (6) other, etc.

[0509] For the case where the communication apparatus can be a chip or a chip system, refer to the structure diagram of the chip shown in Figure 17 . Figure 17 The chip 1700 shown in includes a processor 1701, an interface 1702. Optionally, it can also include a memory 1703. Among them, the number of processors 1701 can be one or more, and the number of interfaces 1702 can be multiple.

[0510] For the case that the chip is used to implement the terminal device or the network device in the embodiments of the present application:

[0511] an interface 1702, configured to receive or output a signal;

[0512] a processor 1701, configured to perform a data processing operation of the terminal device or the network device.

[0513] It can be understood that some optional features in the embodiments of the present application can be implemented independently in some scenarios without relying on other features, such as the scheme currently based on, to solve the corresponding technical problems and achieve the corresponding effects, or can be combined with other features according to the needs in some scenarios. Correspondingly, the communication apparatus given in the embodiments of the present application can also correspondingly implement these features or functions, which will not be described here.

[0514] It should be understood that the processor in the embodiments of the present application can be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method embodiments can be completed by integrated logic circuits or instruction in the form of software in the processor. The processor can be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0515] It can be appreciated that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example, but not limitation, many forms of RAM can be used, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM) and direct rambus RAM (DRAM). It should be noted that the memory of the system and method described herein is intended to include, but not limited to, these and any other suitable types of memory.

[0516] The present application also provides a computer readable medium, and the computer program or instructions are stored in the storage medium, and when the computer program or instructions are executed by the communication device, the functions of any of the above method embodiments are realized.

[0517] The present application also provides a computer program product including instructions, when the computer reads and executes the computer program product, so that the computer realizes the functions of any of the above method embodiments.

[0518] The present application provides a communication system, which includes a terminal device and a network device; wherein the terminal device is used to execute the method executed by the terminal device in the above embodiments, and the network device is used to execute the method executed by the network device in the above embodiments.

[0519] The foregoing embodiments can be implemented, wholly or partially, by software, hardware, firmware, or any combination thereof. When implemented by software, the embodiments can be implemented, wholly or partially, in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are wholly or partially generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center through a wired (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. that includes one or more available media sets. The available media can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (DVD)), or a semiconductor medium (for example, a solid state disk (SSD)), etc.

[0520] It should be noted that, for the foregoing method embodiments, in order to simply describe, they are all described as a combination of a series of actions, but those skilled in the art should know that the present application is not limited to the order of the actions described, because according to the present application, certain operations can be performed in other orders or simultaneously. Secondly, those skilled in the art should know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily necessary for the present application.

[0521] The descriptions of the embodiments of the present application can be referred to each other, and the descriptions of the embodiments are each focused on. The parts not described in detail in a certain embodiment can be referred to the related descriptions of other embodiments. For the convenience and brevity of description, for example, the functions of the devices and the operations performed by the devices provided in the embodiments of the present application can be referred to the related descriptions of the method embodiments of the present application, and the method embodiments and the device embodiments can also be referred to, combined, or cited each other.

[0522] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication processing method characterized by comprising: The method comprises: receiving semi-static signaling from a network device, the semi-static signaling being used for configuring an initial physical random access channel (PRACH) resource; receiving dynamic signaling from the network device, the dynamic signaling indicating a change of a target PRACH resource relative to the initial PRACH resource.

2. The method of claim 1, wherein, The semi-static signaling is used for configuring an initial PRACH resource, comprising: The semi-static signaling comprises a first PRACH configuration index, the first PRACH configuration index indicating the initial PRACH resource.

3. The method of claim 2, wherein, The semi-static signaling further comprises first frequency domain resource indication information, the first PRACH configuration index indicating the initial PRACH resource, comprising: The first PRACH configuration index and the first frequency domain resource indication information indicate the initial PRACH resource.

4. The method of claim 1, wherein, The semi-static signaling is used for configuring an initial PRACH resource, comprising: The semi-static signaling comprises a first PRACH configuration index and a second PRACH configuration index, the second PRACH configuration index being different from the first PRACH configuration index, the second PRACH configuration index indicating the initial PRACH resource.

5. The method of claim 1, wherein, The semi-static signaling is used for configuring an initial PRACH resource, comprising: The semi-static signaling comprises a first PRACH configuration index and a second PRACH configuration index, the second PRACH configuration index being different from the first PRACH configuration index, the initial PRACH resource being remaining resources after excluding resources overlapping with resources indicated by the first PRACH configuration index from resources indicated by the second PRACH configuration index.

6. The method according to any one of claims 1-5, characterized in that, The dynamic signaling comprises first indication information and / or second indication information, the first indication information being used for indicating a change of frequency domain resources of the target PRACH resource relative to the initial PRACH resource, the second indication information being used for indicating a change of time domain resources of the target PRACH resource relative to the initial PRACH resource.

7. The method according to any one of claims 1-5, characterized in that, The dynamic signaling comprises first indication information and second indication information, the first indication information being used for indicating that frequency domain resources or time domain resources of the initial PRACH resource have a change, the second indication information being used for indicating a change amount corresponding to the change of the frequency domain resources or the time domain resources.

8. The method according to any one of claims 1-5, characterized in that, The dynamic signaling indicates a change of a target PRACH resource relative to the initial PRACH resource, comprising: The dynamic signaling indicates time domain resources of the target PRACH resource that are increased or decreased relative to time domain resources of the initial PRACH resource.

9. The method according to any one of claims 1-5, characterized in that, The dynamic signaling indicates a change of a target PRACH resource relative to the initial PRACH resource, comprising: The dynamic signaling indicates whether resources in the initial PRACH resource are available.

10. The method of claim 9, wherein, The dynamic signaling indicates whether resources in the initial PRACH resource are available, comprising: The dynamic signaling indicates whether frequency domain resources and / or time domain resources of the initial PRACH resource are available after being filtered by performing a modulo operation on the frequency domain resources and / or the time domain resources according to indexes of the frequency domain resources and / or the time domain resources.

11. The method of claim 9, wherein, The dynamic signaling indicates whether the resources in the initial PRACH resources are available, including: The dynamic signaling indicates whether the corresponding PRACH resource in the initial PRACH resource is available through a bitmap or code point value.

12. The method of claim 9, wherein, The dynamic signaling indicates whether the resources in the initial PRACH resources are available, including: The dynamic signaling is used to indicate the amount of change in the PRACH resource corresponding to each synchronization signal block index in the initial PRACH resource.

13. The method of any one of claims 1-5, wherein, The semi-static signaling also includes third indication information, which is used to indicate that the initial PRACH resources are divided into multiple PRACH resource subsets based on frequency domain resources and / or time domain resources; The dynamic signaling indicates the change of the target PRACH resource relative to the initial PRACH resource, including: the dynamic signaling is used to indicate whether each PRACH resource subset in the plurality of PRACH resource subsets is available.

14. A communication processing method characterized by comprising: The method includes: Send semi-static signaling to the terminal device, the semi-static signaling being used to configure the initial physical random access channel (PRACH) resources; A dynamic signaling message is sent to the terminal device, the dynamic signaling message indicating the change of the target PRACH resource relative to the initial PRACH resource.

15. The method of claim 14, wherein, The semi-static signaling is used to configure the initial PRACH resources, including: The semi-static signaling includes a first PRACH configuration index, which indicates the initial PRACH resource.

16. The method of claim 15, wherein, The semi-static signaling also includes first frequency domain resource indication information, wherein the first PRACH configuration index indicates the initial PRACH resource, including: The first PRACH configuration index and the first frequency domain resource indication information indicate the initial PRACH resource.

17. The method of claim 16, wherein, The semi-static signaling is used to configure the initial PRACH resources, including: The semi-static signaling includes a first PRACH configuration index and a second PRACH configuration index, the second PRACH configuration index being different from the first PRACH configuration index, and the second PRACH configuration index indicating the initial PRACH resource.

18. The method of claim 16, wherein, The semi-static signaling is used to configure the initial PRACH resources, including: The semi-static signaling includes a first PRACH configuration index and a second PRACH configuration index. The second PRACH configuration index is different from the first PRACH configuration index. The initial PRACH resource is the remaining resource after excluding the resource that overlaps with the resource indicated by the first PRACH configuration index from the resources indicated by the second PRACH configuration index.

19. The method according to any one of claims 14-18, characterized by, The dynamic signaling includes first indication information and / or second indication information, wherein the first indication information is used to indicate the change in frequency domain resources of the target PRACH resource relative to the initial PRACH resource, and the second indication information is used to indicate the change in time domain resources of the target PRACH resource relative to the initial PRACH resource.

20. The method of any one of claims 14-18, wherein, The dynamic signaling includes first indication information and second indication information, the first indication information is used to indicate that the frequency domain resource or the time domain resource of the initial PRACH resource has a change, and the second indication information is used to indicate a change amount corresponding to the change of the frequency domain resource or the time domain resource.

21. The method of any one of claims 14-18, wherein, The dynamic signaling indicates a change of a target PRACH resource relative to the initial PRACH resource, including: The dynamic signaling indicates that the time domain resource of the target PRACH resource is increased or decreased relative to the time domain resource of the initial PRACH resource.

22. The method of any one of claims 15-19, wherein, The dynamic signaling indicates a change of a target PRACH resource relative to the initial PRACH resource, including: The dynamic signaling indicates whether a resource in the initial PRACH resource is available.

23. The method of claim 22, wherein, The dynamic signaling indicates whether a resource in the initial PRACH resource is available, including: The dynamic signaling indicates whether the frequency domain resource and / or the time domain resource of the initial PRACH resource is available after being filtered by a modulo operation according to an index of the frequency domain resource and / or the time domain resource.

24. The method of claim 22, wherein, The dynamic signaling indicates whether a resource in the initial PRACH resource is available, including: The dynamic signaling indicates whether a corresponding PRACH resource in the initial PRACH resource is available by using a bitmap or a code point value.

25. The method of claim 22, wherein, The dynamic signaling indicates whether a resource in the initial PRACH resource is available, including: The dynamic signaling is used to indicate a change amount of a PRACH resource corresponding to each synchronization signal block index in the initial PRACH resource.

26. The method of any one of claims 14-18, wherein, The semi-static signaling further includes third indication information, the third indication information is used to indicate that the initial PRACH resource is divided into a plurality of PRACH resource subsets based on frequency domain resources and / or time domain resources; The dynamic signaling indicates a change of a target PRACH resource relative to the initial PRACH resource, including: the dynamic signaling is used to indicate whether each PRACH resource subset in the plurality of PRACH resource subsets is available.

27. A communications device, characterized by A unit for performing the method of any one of claims 1-13, or a unit for performing the method of any one of claims 14-26.

28. A communications device, characterized by A processor and a memory are coupled, the processor is used to implement the method of any one of claims 1-13, or the processor is used to implement the method of any one of claims 14-26.

29. A chip, characterized by A processor and an interface are coupled; the interface is used to receive or output signals, and the processor is used to execute code instructions to enable the method of any one of claims 1-13 to be executed, or to enable the method of any one of claims 14-26 to be executed.

30. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer executable instructions, when the computer executable instructions are invoked by the computer, the computer executes the method of any one of claims 1-13, or the computer executes the method of any one of claims 14-26.

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