Random access resource configuration method and communication apparatus

Abstract

Disclosed in the present application are a random access resource configuration method and a communication apparatus. The method relates to the technical field of communications. The method comprises: a terminal device receiving first configuration information and second configuration information from a network device, wherein the first configuration information indicates random access resources respectively associated with synchronization signal blocks (SSBs) to which a plurality of beam positions belong, the random access resources respectively associated with the SSBs to which the plurality of beam positions belong comprise at least one first random access resource, the second configuration information indicates at least one second random access resource, the at least one first random access resource and the at least one second random access resource are used for the terminal device in a first beam position to initiate random access, and the first beam position belongs to the plurality of beam positions. On the basis of the method, the allocation of more random access resources to SSBs to which a first beam position belongs is facilitated.

Description

Random access resource configuration method and communication device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on February 5, 2024, with application number 202410171646.X and application name “Random Access Resource Configuration Method and Communication Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a random access resource configuration method and a communication device. Background Art

[0003] Satellite communications offer unique advantages over terrestrial communications, such as wider coverage and satellite base stations being less susceptible to damage from natural disasters or external forces. Because satellite coverage covers a vast area, traffic distribution across the various wavelengths within its coverage area is uneven, resulting in varying demands for access resources. For example, hotspot wavelengths, such as cities and suburbs, may experience high demand for access due to high population density. Meanwhile, non-hotspot wavelengths, such as those covering oceans, lakes, and mountains, experience lower demand for access due to lower population density.

[0004] In the NR protocol, the synchronization signal block (SSB) and system messages can be used to allocate random access resources of the same size to each SSB belonging to each wave position according to a fixed period. Considering the uneven access requests in satellite scenarios, terminal devices in some hot wave positions may not be able to access in time due to insufficient random access resources. Summary of the Invention

[0005] The embodiments of the present application provide a random access resource configuration method and a communication device, which are conducive to allocating more random access resources to the SSB belonging to the hot spot wave position.

[0006] In the first aspect, the present application provides a random access resource configuration method, which can be executed by a terminal device. The terminal device here can refer to the terminal device itself, or a processor, module, chip, or chip system that implements the method in the terminal device. The method is specifically as follows: the terminal device receives first configuration information and second configuration information, and the second configuration information indicates at least one second random access resource. The first configuration information indicates the random access resources respectively associated with the synchronization signal blocks SSB to which multiple wave positions belong, and the random access resources respectively associated with the SSB to which multiple wave positions belong include at least one first random access resource. The at least one first random access resource and the at least one second random access resource are used for the terminal device in the first wave position to initiate random access, and the first wave position belongs to multiple wave positions.

[0007] Based on the method described in the first aspect, random access resources can be pre-configured for each waveband through the first configuration information. Due to different population densities in different coverage areas, terminal access demands in different wavebands vary. A second random access resource is configured for the first waveband through the second configuration information. Therefore, in addition to the at least one first random access resource, terminal devices in the first waveband can also use the second random access resource to initiate random access, which facilitates faster access of terminal devices in the first waveband to the cell.

[0008] In one possible implementation: the random access resources associated with the SSBs to which multiple wave positions belong respectively include N second random access resources, the N second random access resources are random access resources associated with at least one first SSB to which the second wave position belongs, the second wave belongs to multiple wave positions, and N is an integer greater than 0; the second configuration information indicates at least one second random access resource, which can be implemented in the following manner: the second configuration information indicates that L second random access resources among the N second random access resources are used for the terminal device in the first wave position to initiate random access, and L is a positive integer less than or equal to N.

[0009] In one possible implementation, third configuration information is received, where the third configuration information indicates that K first random access resources out of N first random access resources are invalid for the second wave position, and L first random access resources belong to the K first random access resources; L is a positive integer less than or equal to K.

[0010] Based on this implementation, by indicating through the third configuration information that K second random access resources are invalid for the second wave position, and by indicating through the second configuration information that L second random access resources among the K second random access resources are effective for the first wave position, the L second random access resources associated with the SSB originally belonging to the second wave position can be transferred to the terminal device in the first wave position for use, providing more random access resources for the terminal device in the first wave position, which is conducive to enabling the terminal device in the first wave position to access the cell faster. This method can flexibly adjust the random access resource allocation of network equipment to each wave position, so that it effectively matches the uneven distribution of services in non-terrestrial communication NTN scenarios and improves the efficiency of random access resource utilization.

[0011] In a possible implementation manner, the third configuration information indicates a start time of each second random access resource in the K second random access resources and / or an expiration time length of each second random access resource in the K second random access resources.

[0012] In one possible implementation, the third configuration information indicates the expiration time length of each second random access resource in the K second random access resources, which can be implemented as follows: the third configuration information includes the number of consecutive failures of each second random access resource in the K second random access resources; within M consecutive association periods, the third random access resource is invalid for the second wave bit, the third random access resource is one of the K second random access resources, the number of consecutive failures of the third random access resource is M, and M is an integer greater than 0.

[0013] In a possible implementation manner, the second configuration information indicates a start time of each second random access resource in the L second random access resources and / or a valid time length of each second random access resource in the L second random access resources.

[0014] In one possible implementation, the second configuration information indicates the effective time length of each second random access resource in the L second random access resources, which can be implemented in the following way: the second configuration information includes the consecutive effective times of each second random access resource of the L second random access resources; within Q consecutive association periods, the fourth random access resource is used for the terminal device in the first wave position to initiate random access, the fourth random access resource is one of the L second random access resources, and the number of skips corresponding to the fourth random access resource is Q, where Q is a positive integer.

[0015] In one possible implementation, the second configuration information indicates that L second random access resources out of N second random access resources are used for a terminal device in a first waveband to initiate random access. This can be implemented as follows: the second configuration information indicates an index of a second SSB, the second SSB is associated with the L second random access resources, and the second SSB belongs to at least one first SSB. Based on this implementation, the L second random access resources associated with the second SSB index are determined through the second SSB index, so that it can be determined that the L second random access resources can be used for a terminal device in the first waveband to initiate random access. Compared with directly indicating the indexes of the L second random access resources, this is beneficial for saving signaling overhead.

[0016] In one possible implementation, the method further includes: the terminal device receiving at least one first SSB from the network device. Based on this implementation, the terminal device in the second waveband can still receive the SSB and synchronize with the network device even within the second random access resource expiration time.

[0017] In one possible implementation, after the terminal device receives the third configuration information from the network device, the method further includes: the terminal device receiving fourth configuration information from the network device, where the fourth configuration information is used to indicate that P of the K second random access resources are effective for the second wave bit, where P is a positive integer less than or equal to K. Based on this implementation, the network device can flexibly adjust the length of the invalid period of the second random access resources for the second wave bit based on the timing of sending the fourth configuration information.

[0018] In a possible implementation, before the terminal device receives the fourth configuration information from the network device, the method further includes: the terminal device sending a first signal to the network device, where the first signal is used to request that the second random access resource be effective for the second wave bit.

[0019] In a possible implementation, before the terminal device sends the first signal to the network device, the method further includes: the terminal device receiving fifth configuration information from the network device, where the fifth configuration information indicates resources for transmitting the first signal.

[0020] In a possible implementation, the first signal is a wake-up signal.

[0021] In one possible implementation, when the second random access resource overlaps with the fifth random access resource, the random access resource with higher priority among the second random access resource and the fifth random access resource is valid, and the random access resource with lower priority is invalid. The fifth random access resource is a random access resource associated with the SSB to which multiple wave positions other than the first wave position belong.

[0022] It can be understood that the network device is also configured with the priority corresponding to each random access resource in the random access resources associated with the SSBs to which multiple wave positions belong, and the priority corresponding to the second random access resource. When the second random access resource configured by the network device overlaps with the fifth random access resource, the priority between the second random access resource and the fifth random access resource can be compared. When the priority of the second random access resource is higher than that of the fifth random access resource, the second random access resource is valid and the fifth random access resource is invalid, that is, the terminal device in the first wave position can use the second random access resource to initiate random access, and the terminal device in the wave position corresponding to the SSB associated with the fifth random access resource cannot use the fifth random access resource to initiate random access. When the priority of the second random access resource is lower than that of the fifth random access resource, the fifth random access resource is valid and the second random access resource is invalid, that is, the terminal device in the first wave position cannot use the second random access resource to initiate random access, and the terminal device in the wave position corresponding to the SSB associated with the fifth random access resource can use the fifth random access resource to initiate random access. Based on this implementation method, the impact of resource conflicts on terminal devices can be reduced.

[0023] In one possible implementation, the second configuration information indicates a sixth random access resource and an offset value; when the sixth random access resource overlaps with the fifth random access resource, the second random access resource is determined based on the offset value and the sixth random access resource, the offset value includes the frequency domain offset and / or time domain offset between the second random access resource and the sixth random access resource, and the fifth random access resource is a random access resource associated with the SSB to which multiple wave positions other than the first wave position belong; when the sixth random access resource does not overlap with the fifth random access resource, the second random access resource is the sixth random access resource.

[0024] It is understandable that the network device preconfigures the sixth random access resource through the second configuration information. When the sixth random access resource does not overlap with the fifth random access resource, the sixth random access resource is the second random access resource and can be used by the terminal device in the first waveband to initiate random access. If the sixth random access resource overlaps with the fifth random access resource, the second random access resource can be determined based on the offset value and the sixth random access resource, thereby avoiding overlap between the second random access resource and the fifth random access resource.

[0025] In a possible implementation manner, the second random access resource and one of the at least one first random access resource have the same time domain position but different frequency domain positions.

[0026] In one possible implementation, the second configuration information indicates at least one second random access resource, which can be implemented as follows: the second configuration information includes one or more of the following information: the number of second random access resources, the identifier of the first wave bit, or the index of the SSB to which the first wave bit belongs.

[0027] In a possible implementation manner, the second configuration information is carried in a system information block SIB.

[0028] In a second aspect, the present application provides a random access resource configuration method, which can be performed by a network device. The network device here can refer to the network device itself, or a processor, module, chip, or chip system that implements the method in the network device. The method includes: the network device sends first configuration information, the first configuration information indicates random access resources associated with synchronization signal blocks (SSBs) to which multiple wave positions belong, and the random access resources associated with the SSBs to which the multiple wave positions belong include at least one first random access resource; the network device sends second configuration information, the second configuration information indicates at least one second random access resource, and the at least one first random access resource and the at least one second random access resource are used for a terminal device in a first wave position to initiate random access, and the first wave position belongs to multiple wave positions.

[0029] Among them, the beneficial effects corresponding to the second aspect can be found in the description of the first aspect and will not be repeated here.

[0030] In one possible implementation, the random access resources associated with the SSBs to which multiple wave positions belong include N second random access resources, where the N second random access resources are random access resources associated with at least one first SSB to which the second wave position belongs, the second wave belongs to multiple wave positions, and N is an integer greater than 0; the second configuration information indicates at least one second random access resource, which can be implemented in the following manner: the second configuration information indicates that L second random access resources among the N second random access resources are used for the terminal device in the first wave position to initiate random access, and L is a positive integer less than or equal to N.

[0031] In one possible implementation, the method also includes: the network device sends third configuration information, the third configuration information indicating that K first random access resources among N second random access resources are invalid for the second wave position, and L first random access resources belong to the K first random access resources; L is a positive integer less than or equal to K.

[0032] In a possible implementation manner, the third configuration information indicates a start time of each second random access resource in the K second random access resources and / or an expiration time length of each second random access resource in the K second random access resources.

[0033] In one possible implementation, the third configuration information indicates the expiration time length of each second random access resource in the K second random access resources, which can be implemented as follows: the third configuration information includes the number of consecutive failures of each second random access resource in the K second random access resources; within M consecutive association periods, the third random access resource is invalid for the second wave bit, the third random access resource is one of the K second random access resources, the number of consecutive failures of the third random access resource is M, and M is an integer greater than 0.

[0034] In a possible implementation manner, the second configuration information indicates a start time of each second random access resource in the L second random access resources and / or a valid time length of each second random access resource in the L second random access resources.

[0035] In one possible implementation, the second configuration information indicates the effective time length of each second random access resource in the L second random access resources, which can be implemented in the following way: the second configuration information includes the consecutive effective times of each second random access resource of the L second random access resources; within Q consecutive association periods, the third random access resource is used for the terminal device in the first wave position to initiate random access, the third random access resource is one of the L second random access resources, the number of skips corresponding to the third random access resource is N, and Q is a positive integer.

[0036] In one possible implementation, the second configuration information indicates L second random access resources for the terminal device in the first wave position to initiate random access, which can be implemented in the following way: the second configuration information indicates the index of the second SSB, the second SSB is associated with the L second random access resources, and the second SSB belongs to at least one first SSB.

[0037] In a possible implementation, the method further includes: the network device sending at least one first SSB to the terminal device in the second waveband.

[0038] In one possible implementation, after the network device sends the third configuration information, the method further includes: sending fourth configuration information, where the fourth configuration information is used to indicate that P second random access resources among the K second random access resources are effective for the second wave position, where P is a positive integer less than or equal to K.

[0039] In one possible implementation, the network device sends the fourth configuration information. The specific implementation is as follows: when the traffic volume in the second waveband is greater than a preset value, the network device sends the fourth configuration information. It is understandable that when the traffic volume in the second waveband is greater than the preset value, it indicates that the number of terminal devices in the current second waveband is large. For example, the second waveband may suddenly experience a traffic surge, and correspondingly, the number of terminal devices that need to access the cell is large. After the network device sends the third configuration information, all or part of the random access resources associated with the SSB to which the second waveband belongs are allocated to other wavebands for use. Before the expiration time expires, the terminal devices in the second waveband have no resources for initiating random access, or the number of resources available for initiating random access in the second waveband is too small, affecting the random access initiation of terminal devices in the second waveband. The network device can send the fourth configuration information before the expiration time expires, thereby terminating the expiration configuration of the P second random access resources for the second waveband in advance, so that the P second random access resources can be promptly provided to the terminal devices in the second waveband for use, thereby avoiding a significant impact on the terminal devices in the second waveband.

[0040] In a possible implementation, the network device sends the fourth configuration information in the following manner: the network device receives a first signal, where the first signal is used to request that the second random access resource be effective for the second waveband; and the network device sends the fourth configuration information according to the first signal.

[0041] In a possible implementation manner, the method further includes: the network device sending fifth configuration information, where the fifth configuration information indicates resources used to transmit the first signal.

[0042] In a possible implementation, the first signal is a wake-up signal.

[0043] In one possible implementation, the network device sends second configuration information, specifically when a first parameter of a first waveband is greater than or equal to a second threshold. The network device sends third configuration information, specifically when the first parameter of the second waveband is less than or equal to the first threshold. The first parameter is one of the following: traffic load, service volume, or number of service requests. It is understood that if the first parameter of the second waveband is less than the first threshold, it indicates that the number of terminal devices in the second waveband is small and access demand is low. Therefore, the second waveband can be referred to as a non-hotspot waveband. If the first parameter of the first waveband is greater than or equal to the second threshold, it indicates that the number of terminal devices in the first waveband is large and access demand is high. Therefore, the first waveband can be referred to as a hotspot waveband. Because the second waveband is a non-hotspot waveband, the N first random access resources associated with the SSB to which the second waveband belongs include a relatively large number of idle random access resources. Transferring the L first random access resources associated with the SSB to which the second waveband belongs to the terminal devices in the first waveband has a minimal impact on the terminal devices in the second waveband. At the same time, the first wave position is a hot spot wave position, and the terminal devices in the first wave position obtain more random access resources, which is conducive to enabling the terminal devices in the first wave position to access the cell faster.

[0044] In a third aspect, the present application provides a random access resource configuration method, which can be performed by a terminal device. The terminal device herein may refer to the terminal device itself or to a processor, module, chip, or chip system in the terminal device that implements the method. The method includes: the terminal device receiving first configuration information from a network device, the first configuration information indicating a first random access resource format, wherein a time unit in the first random access resource format includes multiple sub-time units for transmitting a random access message.

[0045] Based on the method described in the third aspect, multiple sub-time units can be used to transmit random access messages within one time unit, which is beneficial for providing more random access resources for terminal devices.

[0046] In a possible implementation, the first random access resource format is a random access resource format in random access resource format-2.

[0047] In a possible implementation manner, the first random access resource format indicates an index of a sub-time unit in a time unit for transmitting a random access message.

[0048] In a possible implementation, the indexes of the sub-time units used to transmit the random access message in a time unit are 1 and 5.

[0049] In one possible implementation, the first random access resource format indicates a sub-time unit index for transmitting a random access message in a first time unit, and indicates a sub-time unit index for transmitting a random access message in a second time unit, where the first time unit is adjacent to the second time unit.

[0050] In a possible implementation, the sub-time unit indexes for transmitting the random access message in the first time unit are 0, 4, and 8, and the sub-time unit indexes for transmitting the random access message in the first time unit are 2 and 6.

[0051] In a possible implementation, the first configuration information further includes a first row index, and the first configuration information indicates that the random access resource format corresponding to the first row index in the random access resource format-2 is the first random access resource format.

[0052] In a fourth aspect, the present application provides a random access resource configuration method, which can be performed by a network device. The network device herein may refer to the network device itself or to a processor, module, chip, or chip system in the network device that implements the method. The method includes: the network device sending first configuration information, where the first configuration information indicates a first random access resource format, where a time unit in the first random access resource format includes multiple sub-time units for transmitting a random access message.

[0053] In one possible implementation, the first random access resource format is a random access resource format in Format-2. Each transmission in Format-2 occupies a continuous 3.5 ms resource in the time domain. Because Format-2 does not have a coverage gap (the gap between the link budget and the decoding threshold), Format-2 offers better coverage performance in NTN scenarios.

[0054] In a possible implementation manner, the first random access resource format indicates an index of a sub-time unit in a time unit for transmitting a random access message.

[0055] In a possible implementation, the indexes of the sub-time units used to transmit the random access message in a time unit are 1 and 5.

[0056] In one possible implementation, the first random access resource format indicates a sub-time unit index for transmitting a random access message in a first time unit, and indicates a sub-time unit index for transmitting a random access message in a second time unit, where the first time unit is adjacent to the second time unit.

[0057] In a possible implementation, the sub-time unit indexes for transmitting the random access message in the first time unit are 0, 4, and 8, and the sub-time unit indexes for transmitting the random access message in the first time unit are 2 and 6.

[0058] In a possible implementation, the first configuration information further includes a first row index, and the first configuration information indicates that the random access resource format corresponding to the first row index in the random access resource format-2 is the first random access resource format.

[0059] In a fifth aspect, the present application provides a communication device, which may also be a chip system. The communication device may perform the method described in the first aspect or the third aspect. The functions of the communication device may be implemented by hardware, or by hardware executing corresponding software implementations. The hardware or software includes one or more units or modules corresponding to the above-mentioned functions. The units or modules may be software and / or hardware. The operations and beneficial effects performed by the communication device may refer to the methods and beneficial effects described in the first aspect or the third aspect above, and any repetitions will not be repeated.

[0060] In a sixth aspect, the present application provides a communication device, which may also be a chip system. The communication device may perform the method described in the second aspect or the fourth aspect. The functions of the communication device may be implemented by hardware, or by hardware executing corresponding software implementations. The hardware or software includes one or more units or modules corresponding to the above-mentioned functions. The units or modules may be software and / or hardware. The operations and beneficial effects performed by the communication device may refer to the methods and beneficial effects described in the second aspect or the fourth aspect above, and any repetitions will not be repeated.

[0061] In a seventh aspect, the present application provides a communication device, which includes a processor. When the processor calls a computer program in a memory, the method described in any one of the first to fourth aspects and its possible implementation methods are executed.

[0062] In a possible implementation, the communication device further includes a memory, and the memory and the processor are coupled to each other. Optionally, the memory and the processor are integrated together.

[0063] In a possible implementation, the communication device further includes a transceiver, which is used to transmit and receive data and / or signaling.

[0064] In an eighth aspect, the present application provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor is used to implement the method described in any one of the first to fourth aspects and its possible implementation methods through logic circuits or execution code instructions.

[0065] In a ninth aspect, the present application provides a chip comprising a processor and a communication interface, wherein the processor is configured to enable the chip to execute the method described in any one of the first to fourth aspects above and its possible implementation methods.

[0066] In the tenth aspect, the present application provides a computer-readable storage medium, which stores a computer program or instruction. When the computer program or instruction is executed by a communication device, it implements the method described in any one of the first to fourth aspects and its possible implementation methods.

[0067] In the eleventh aspect, an embodiment of the present application provides a computer program or computer program product, including code or instructions. When the code or instructions are run on a computer, the computer executes the method described in any one of the first to fourth aspects and its possible implementation methods.

[0068] In the twelfth aspect, an embodiment of the present application provides a communication system, which includes the above-mentioned communication device for executing the method described in the first aspect and the communication device for executing the method described in the second aspect, or the communication system includes the above-mentioned communication device for executing the method described in the third aspect and the communication device for executing the method described in the fourth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] FIG1 is a schematic diagram of a communication system provided in an embodiment of the present application;

[0070] Figures 2a to 2c are satellite communication network architectures provided in an embodiment of the present application;

[0071] FIG3 is a schematic diagram of a flow chart of a random access resource configuration method provided in an embodiment of the present application;

[0072] FIG4 is a schematic diagram of a frequency division multiplexing method provided in an embodiment of the present application;

[0073] FIG5 is a schematic diagram of the association between SSB and RO provided in an embodiment of the present application;

[0074] FIG6 is a schematic diagram of the association between SSB and RO provided in an embodiment of the present application;

[0075] FIG7 is a schematic diagram of a flow chart of a random access resource configuration method provided in an embodiment of the present application;

[0076] FIG8 is a schematic diagram of the association between SSB and RO provided in an embodiment of the present application;

[0077] FIG9 is a schematic diagram of a flow chart of a random access resource configuration method provided in an embodiment of the present application;

[0078] FIG10 is a schematic diagram of a first random access resource format provided in an embodiment of the present application;

[0079] FIG11 is a schematic diagram of a first random access resource format provided in an embodiment of the present application;

[0080] FIG12 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0081] FIG13 is a schematic structural diagram of another communication device provided in an embodiment of the present application;

[0082] FIG14 is a schematic structural diagram of a chip provided in an embodiment of the present application. DETAILED DESCRIPTION

[0083] The specific embodiments of the present application are further described in detail below with reference to the accompanying drawings.

[0084] The terms "first" and "second" and the like in the specification, claims, and drawings of this application are used to distinguish between different objects, not to describe a specific order. Furthermore, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0085] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0086] In this application, "at least one (item)" refers to one or more, "more than one" refers to two or more, "at least two (items)" refers to two or three and more than three, and "and / or" is used to describe the corresponding relationship of associated objects, indicating that there can be three relationships. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single or plural 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, c can be single or multiple.

[0087] The following describes the system architecture of the embodiment of the present application:

[0088] To facilitate understanding of the technical solutions of the embodiments of the present application, the system architecture of the method provided in the embodiments of the present application is briefly described below. It is understood that the system architecture described in the embodiments of the present application is for the purpose of more clearly illustrating the technical solutions of the embodiments of the present application and does not constitute a limitation on the technical solutions provided in the embodiments of the present application.

[0089] It should be understood that the technical solutions of the present application can be applied to non-terrestrial networks (NTNs) or scenarios where NTNs are integrated with terrestrial networks (TNs). The technical solutions of the embodiments of the present application can be applied to various communication systems, such as satellite communication systems and traditional mobile communication systems. The satellite communication system can be integrated with a traditional mobile communication system (i.e., a terrestrial communication system). Communication systems such as wireless local area networks (WLANs), wireless fidelity (WiFi), long term evolution (LTE), LTE frequency division duplex (FDD), LTE time division duplex (TDD), fifth generation (5G) systems or new radio (NR), and other future communication systems also support communication systems that integrate multiple wireless technologies. For example, it can also be applied to systems where non-terrestrial networks (NTNs) integrate terrestrial mobile communication networks, such as drones, satellite communication systems, and high altitude platform stations (HAPS).

[0090] FIG1 is an example of a communication system applicable to an embodiment of the present application. The communication system includes at least one network device and at least one terminal device. FIG1 uses a network device and multiple terminal devices as an example. These multiple terminal devices can be cellular phones, smart phones, laptops, handheld communication devices, handheld computing devices, satellite radio devices, global positioning systems, personal digital assistants (PDAs), and / or any other suitable devices for communicating on a wireless communication system, and can all be connected to the network device. These multiple terminal devices can all communicate with the network device, and in addition, terminal devices can also communicate with each other. Of course, the number of terminal devices and network devices in FIG1 is only an example, and can also be less or more.

[0091] The terminal device involved in the embodiments of the present application, which may also be referred to as a terminal, is an entity on the user side for receiving or transmitting signals. The terminal device can be a device that provides voice and / or data connectivity to the user, for example, a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device can also be other processing devices connected to a wireless modem. The terminal device can communicate with a radio access network (RAN). The terminal device can also be called a wireless terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a mobile station, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, or a UE, etc. The terminal device can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device, which exchanges voice and / or data with a radio access network. For example, the terminal device may also be a personal communication service (PCS) phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), etc. Common terminal devices include, for example, mobile phones, tablet computers, laptop computers, PDAs, mobile internet devices (MIDs), and wearable devices such as smart watches, smart bracelets, and pedometers, but the embodiments of the present application are not limited thereto.

[0092] The embodiments of this application do not limit the device form factor of the terminal device. The device used to implement the functions of the terminal device can be the terminal device; it can also be a device that supports the terminal device to implement the functions, such as a chip system. The device can be installed in the terminal device or used in conjunction with the terminal device. In the embodiments of this application, the chip system can be composed of a chip or include a chip and other discrete components.

[0093] A network device is an entity on the network side that is used to send signals, receive signals, or both send and receive signals. A network device can be a device deployed in a radio access network (RAN) to provide wireless communication functions for terminals.

[0094] In one possible scenario, a network device may be a device with base station functionality, such as an evolved NodeB (eNodeB), a transmitting and receiving point (TRP), a transmitting point (TP), a next-generation NodeB (gNB), an integrated access and backhaul (IAB) node, or non-terrestrial network equipment, i.e., equipment that can be deployed on a high-altitude platform or satellite. A network device may be a transmission reception point (TRP), a base station, or various forms of control nodes, such as a network controller or wireless controller. Specifically, network devices can include various forms of macro base stations, micro base stations (also known as small cells) in heterogeneous network (HetNet) scenarios, relay stations, access points (APs), radio network controllers (RNCs), node Bs (NBs), base station controllers (BSCs), base transceiver stations (BTSs), home base stations (e.g., home evolved node Bs, or home node Bs, HNBs), baseband units (BBUs) and remote radio units (RRUs) in distributed base station scenarios, transmission points (TRPs), transmitting points (TPs), mobile switching centers, and the like. They can also be base station antenna panels. A control node can connect to multiple base stations and configure resources for multiple terminals covered by multiple base stations. In systems using different wireless access technologies, the names of devices with base station functionality may vary. For example, it can be a gNB in ​​5G, or a network-side device in a network after 5G, or a network device in a future evolved public land mobile (communication) network (public land mobile network, PLMN) network, or a device that performs base station functions in device-to-device (D2D) communication, machine-to-machine (M2M) communication, and vehicle network communication, etc. This application does not limit the specific name of the network device.The network equipment may also be an open access network (O-RAN or ORAN), a baseband pool (BBU pool) and RRU under a cloud radio access network (CRAN), etc.

[0095] In another possible scenario, multiple network devices collaborate to assist the terminal in achieving wireless access, and different network devices respectively implement part of the functions of the base station. For example, the network device may include a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU may be set separately, or may be included in the same network element, such as a baseband unit (BBU). The RU may be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH). It is understandable that the network device may be a CU node, a DU node, or a device including a CU node and a DU node. In addition, the CU may be divided into a network device in the access network RAN, or the CU may be divided into a network device in the core network (CN), without limitation here.

[0096] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (Open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, this application uses CU, CU-CP, CU-UP, DU and RU as examples for description. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0097] By way of example and not limitation, in embodiments of the present application, a network device may have a mobile characteristic, for example, a network device may be a mobile device. In some embodiments, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc.

[0098] In the embodiments of the present application, the form of the network device is not limited. The device used to implement the function of the network device can be a network device; it can also be a device that can support the network device to implement the function, such as a chip system. The device can be installed in the network device or used in conjunction with the network device.

[0099] In particular, the solution provided by the present application can be applied to the field of satellite communications. The satellite has some or all of the functions of a network device and can be called a satellite base station. It can provide wireless access services and schedule wireless resources for terminal devices that access the network through the satellite base station. The satellite base station and the terminal device communicate through the user-universal terrestrial radio access network-user (Uu) interface. Among them, the satellite base station and the core network can communicate through the next generation network (next generation, NG) interface. The satellite base station and the core network can exchange the core network's non-access stratum (NAS) signaling and user service data through the NG interface. Optionally, satellite equipment can be divided into transparent mode and regenerative mode according to the working mode. When the satellite works in transparent mode, the satellite has the function of relaying. The gateway station has the function of a base station or part of the function of a base station. In this case, the gateway station can be regarded as a base station. Optionally, when the satellite works in regenerative mode, the satellite has data processing capabilities, the function of a base station or part of the function of a base station. In this case, the satellite can be regarded as a base station.

[0100] Figures 2a to 2c are satellite communication network architectures applicable to embodiments of the present application. The terminal device can access the network through an air interface (the air interface can be various types of air interfaces, such as a 5G air interface), and the terminal device can access the wireless network through the air interface, obtain data network services through the wireless network, or communicate with other devices (such as other terminal devices) through the wireless network. The base station can be deployed on the ground and connected to a ground station that communicates with the satellite, as shown in Figure 2a. Or the base station can also be deployed on a satellite, as shown in Figure 2b. The ground station and the ground base station can be connected by either wired or wireless, and the ground station can communicate with the core network through the base station. There can be a wireless link between satellites. If the satellite only has a transparent forwarding function (that is, the corresponding base station is deployed on the ground), only transparent forwarding is implemented between satellites. If the base station or part of the base station function is deployed on the satellite, the signaling interaction and user data transmission between base stations can be completed between satellites, as shown in Figure 2c. The various network elements included in Figures 2a to 2c and their interfaces are described as follows:

[0101] Terminal devices, as mentioned in Figure 1 above, are mobile devices that support the new air interface, typically mobile phones, tablets, etc. They can access the satellite network through the air interface and initiate calls, access the Internet, and other services.

[0102] A base station is a network device as mentioned in FIG1 , which can provide wireless access services, schedule wireless resources to access terminals, and provide reliable wireless transmission protocols and data encryption protocols.

[0103] The core network provides services such as user access control, mobility management, session management, user authentication, and billing. It consists of multiple functional units. For example, the access and mobility management function (AMF) provides user access management, authentication, and mobility management, while the user plane function (UPF) manages user plane data transmission and traffic statistics.

[0104] The ground station can be responsible for forwarding signaling and business data between the satellite base station and the core network.

[0105] The air interface refers to the wireless link between the terminal and the base station.

[0106] The NG interface refers to the interface between the base station and the core network, mainly exchanging core network NAS and other signaling, as well as user service data. It should be noted that in 4G communication systems, the Xn interface in Figures 2a to 2c is replaced by the X2 interface, and the NG interface is replaced by the S1 interface.

[0107] Some of the terms involved in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.

[0108] 1. Beam scanning

[0109] Beam scanning refers to sending synchronization signal blocks (SSBs) using beams in different directions at different times. SSBs are also called synchronization signal and physical broadcasting channel blocks (SS / PBCH blocks). Beam scanning is also called SSB scanning. In NTN systems, broadcast beam coverage is based on beam positions. This means that the broadcast beam periodically scans all beam positions within its coverage area and sends SSBs based on each beam position.

[0110] 2. Random access (RA)

[0111] Random access refers to the process from when a terminal device sends a random access preamble to attempt to access the network to when a basic signaling connection is established with the network. Through random access, a terminal device can transition from an idle or inactive state to a connected state, establish various bearers with network devices, obtain necessary resources and configuration parameters, and then communicate with the network devices.

[0112] Random access resources refer to the resources used by the terminal device to initiate random access, specifically, the resources used by the terminal device to send a random access message, which indicates that the terminal device requests to access the cell. Optionally, when the terminal device initiates random access using a four-step random access method, the random access resources are the resources used by the terminal device to send a random access message 1 (Msg1), or when the terminal device initiates random access using a two-step random access method, the random access resources are the resources used by the terminal device to send a random access message A (MsgA). The random access resources can also be understood as random access channel occasion (RO) resources. The available random access resources corresponding to each wave position are determined by the mapping relationship between the SSB index (index) to which the wave position belongs and the RO. The mapping relationship is issued through the system information block (SIB).

[0113] Because satellite coverage covers a vast area, traffic distribution is uneven across the various wavelengths within its coverage area, resulting in varying demands for access resources. For example, hotspot wavelengths, such as cities and suburbs, may experience high demand for access due to high population density. Meanwhile, non-hotspot wavelengths, such as those covering oceans, lakes, and mountains, may experience lower demand due to low population density.

[0114] Access requests in satellite scenarios are uneven, and random access resources in some hot spots may be tight, making it impossible for terminal devices to access the cell in a timely manner.

[0115] In order to allocate more random access resources to the SSBs to which the hot spot wave positions belong, an embodiment of the present application proposes a random access resource configuration method, as shown in FIG3 , and the random access resource configuration method includes steps 301 to 302. The execution subjects corresponding to the method shown in FIG3 are terminal devices and network devices, or the execution subjects of the method shown in FIG3 may be chips in terminal devices and chips in network devices. FIG3 is illustrated using terminal devices and network devices as examples. The embodiment of the present application does not limit the execution subjects of the random access resource configuration method. The terminal device and the network device may be the terminal device and the network device in the communication system shown in FIG1 . Among them:

[0116] 301. The network device sends first configuration information, and correspondingly, the terminal device receives the first configuration information, where the first configuration information indicates random access resources respectively associated with SSBs to which multiple wave positions belong, and the random access resources respectively associated with SSBs to which multiple wave positions belong include at least one first random access resource.

[0117] In the embodiments of the present application, the SSB to which a waveband belongs refers to the SSB associated with the waveband, or can also be understood as the SSB issued within the waveband. A waveband can be associated with one or more SSBs. For example, the first waveband belongs to SSB1, which means that the first waveband is associated with SSB1, and the network device will issue SSB1 within the first waveband. The first random access resource is a random access resource associated with SSB1 to which the first waveband belongs, that is, the first random access resource is associated with SSB1, and SSB1 is associated with the first waveband.

[0118] In one possible implementation, the indexes of the SSBs associated with different wave positions are different. Or in some cases, there may be a situation where the indexes of the SSBs associated with two different wave positions are the same. For example, in the case of limited power, the satellite cannot cover all areas through a large number of beams at the same time. Therefore, time division multiplexing can be used to perform beam scanning, that is, one beam scans one wave position within a period of time, and after the period ends, the beam scans another wave position. For example, beam 1 scans wave position 1 within time period 1, that is, the network device sends an SSB with an index of 1 within wave position 1. After time period 1 ends, beam 1 scans wave position 2 within time period 2, that is, the network device sends an SSB with an index of 1 within wave position 2. In this case, both wave position 1 and wave position 2 are associated with an SSB with an index of 1, that is, the indexes of the SSBs associated with wave position 1 and wave position 2 are the same.

[0119] In one possible implementation, the first configuration information may be carried in a SIB, and the network device sends the first configuration information by broadcasting. The first configuration information is a physical random access channel (PRACH) configuration index (prachConfigIndex) in the SIB. The first configuration information may also be referred to as legacy RO configuration information. The first configuration information may include one or more of the following information: information such as the distribution period of random access resources in the time domain, the starting symbol position, or the number of ROs in each frame.

[0120] 302. The network device sends second configuration information, and correspondingly, the terminal device receives the second configuration information, where the second configuration information indicates at least one second random access resource, at least one first random access resource, and at least one second random access resource are used for the terminal device in the first wave position to initiate random access, and the first wave position belongs to multiple wave positions.

[0121] In this embodiment of the present application, the network device may pre-configure random access resources for each wavelength using first configuration information. Due to different population densities in different coverage areas, terminal access requirements in different wavelengths may vary. The network device may configure a second random access resource for the first wavelength using second configuration information. Therefore, in addition to the at least one first random access resource, terminal devices in the first wavelength may also use the second random access resource to initiate random access, which facilitates faster access of terminal devices in the first wavelength to the cell.

[0122] Exemplarily, a configuration of the second configuration information is as follows:

[0123] RACH-ConfigCommon includes lower-order information elements prach-ConfigurationIndex, msg1-FDM, and msg1-FrequencyStart. prach-ConfigurationIndex indicates the time domain position of the second random access resource, msg1-FDM indicates the number of times the second random access resource is frequency-division multiplexed, and msg1-FrequencyStart indicates the frequency domain starting position of the first second random access resource (the second random access resource with the lowest frequency domain position) among the msg1-FDM-second random access resources frequency-division multiplexed on the same time domain resource. For example, as shown in Figure 4, three random access resources are frequency-division multiplexed on time domain resource 1, resulting in three random access resources with different frequency domain positions, namely, second random access resource 1, second random access resource 2, and second random access resource 3. Second random access resource 1 has the lowest frequency domain position, and msg1-FrequencyStart is the frequency domain starting position of second random access resource 1.

[0124] rachAssociatedSSBList indicates one or more SSBs associated with the first wave bit, which can be represented by a bitmap. Each bit included in the bitmap corresponds to an SSB index, and each bit corresponds to a different SSB. The SSB index corresponding to the bit with the first numerical value is the SSB index associated with the first wave bit, and the first numerical value is 1 or 0. Exemplarily, the SSBs sent by the network device include SSB0, SSB1, SSB2, and SSB3, wherein the bitmap includes 4 bits, the i-th bit corresponds to SSB(i-1), and i is an integer less than 4 and greater than or equal to 0. In the bitmap, the SSB index corresponding to the bit with a value of 1 is the SSB index associated with the first wave bit. When the bitmap is represented as 0101, it can be determined that SSB1 and SSB3 are the SSBs associated with the first wave bit.

[0125] In one possible implementation, the network device transmits the second configuration information as follows: when a first parameter of a first waveband is greater than a first threshold, the network device transmits the second configuration information, where the first parameter is one of the following parameters: traffic load, service volume, or number of service requests. Optionally, the network device may periodically determine whether the first parameters of multiple wavebands are greater than the first threshold based on historical prior information about satellite communication scenarios. It is understood that if the first parameter of the first waveband is greater than the second threshold, it indicates that there are a large number of terminal devices in the first waveband and a high access demand. Therefore, allocating more random access resources to the terminal devices in the first waveband is beneficial for enabling the terminal devices in the first waveband to access the cell more quickly.

[0126] In a possible implementation, the second random access resource may conflict with other resources. To avoid the conflict between the second random access resource and other resources, one or more of the following optional methods may be used:

[0127] Optional method 1: When the second random access resource overlaps with the fifth random access resource, the random access resource with higher priority among the second random access resource and the fifth random access resource is valid, and the random access resource with lower priority is invalid. The fifth random access resource is a random access resource associated with the SSB to which multiple wave positions other than the first wave position belong.

[0128] It can be understood that the network device is also configured with the priority corresponding to each random access resource in the random access resources associated with the SSBs to which multiple wave positions belong, and the priority corresponding to the second random access resource. When the second random access resource configured by the network device overlaps with the fifth random access resource, the priority between the second random access resource and the fifth random access resource can be compared. When the priority of the second random access resource is higher than that of the fifth random access resource, the second random access resource is valid and the fifth random access resource is invalid, that is, the terminal device in the first wave position can use the second random access resource to initiate random access, and the terminal device in the wave position corresponding to the SSB associated with the fifth random access resource cannot use the fifth random access resource to initiate random access. When the priority of the second random access resource is lower than that of the fifth random access resource, the fifth random access resource is valid and the second random access resource is invalid, that is, the terminal device in the first wave position cannot use the second random access resource to initiate random access, and the terminal device in the wave position corresponding to the SSB associated with the fifth random access resource can use the fifth random access resource to initiate random access. Based on this implementation method, the impact of resource conflicts on terminal devices can be reduced.

[0129] For example, as shown in Figure 5, the network device configures random access resources associated with the SSBs to which each waveband belongs through first configuration information. Waveband 1 is associated with SSB0, waveband 2 is associated with SSB1, waveband 3 is associated with RO2, and waveband 4 is associated with SSB3. Based on the first parameters of each waveband, the network device determines that the first parameter of waveband 3 is greater than the first threshold, and determines that waveband 3 is the first waveband. Using second configuration information, the network device configures three second random access resources for waveband 3: RO0', RO1', and RO2'. RO1' and RO2' do not overlap with other random access resources. RO0' overlaps with RO0, so the priority between RO0' and RO0 must be compared. If RO0' has a higher priority than RO0, RO0 is invalid and RO0' is valid. If RO0 has a higher priority than RO0', RO0' is invalid and RO0 is valid.

[0130] Optional method 2: The second configuration information indicates the sixth random access resource and the offset value; when the sixth random access resource overlaps with the fifth random access resource, the second random access resource is determined based on the offset value and the sixth random access resource, the offset value includes the frequency domain offset and / or time domain offset between the second random access resource and the sixth random access resource, and the fifth random access resource is a random access resource associated with the SSBs to which multiple wave positions belong; when the sixth random access resource does not overlap with the fifth random access resource, the second random access resource is the sixth random access resource.

[0131] It is understandable that the network device preconfigures the sixth random access resource through the second configuration information. When the sixth random access resource does not overlap with the fifth random access resource, the sixth random access resource is the second random access resource and can be used by the terminal device in the first waveband to initiate random access. If the sixth random access resource overlaps with the fifth random access resource, the second random access resource can be determined based on the offset value and the sixth random access resource, thereby avoiding overlap between the second random access resource and the fifth random access resource.

[0132] For example, as shown in Figure 6, the network device configures the random access resources associated with the SSBs to which each waveband belongs through the first configuration information. SSB0 to which waveband 1 belongs is associated with RO0, SSB1 to which waveband 2 belongs is associated with RO1, SSB2 to which waveband 3 belongs is associated with RO2, and SSB3 to which waveband 4 belongs is associated with RO3. The network device determines, based on the first parameters of each waveband, that the first parameter of waveband 3 is greater than the first threshold value and determines that waveband 3 is the first waveband. The network device configures three sixth random access resources for waveband 3 through the second configuration information, namely RO0', RO1', and RO2'. Among them, RO1' and RO2' do not overlap with other random access resources. Therefore, RO1' and RO2' are the second random access resources configured by the network device for waveband 3. RO0' overlaps with RO0. Therefore, an offset value needs to be added to RO0' to obtain RO0", thereby avoiding conflict with RO0. RO0" is the second random access resource configured by the network device for waveband 3.

[0133] In one possible implementation, the second random access resource and one of the at least one first random access resource have the same time domain location but different frequency domain locations. Optionally, the second configuration information is used to determine the second random access resource. Specifically, the second configuration information includes one or more of the following information: the number of second random access resources, an identifier of the first wave bit, or an index of the SSB to which the first wave bit belongs.

[0134] It can be understood that this implementation method is to obtain random access resources by extending the first random access resource on the frequency domain resource. Specifically, the terminal device can determine at least one first random access resource associated with the SSB to which the first wave bit belongs based on the identifier of the first wave bit or the index of the SSB to which the first wave bit belongs through the first configuration information, and then determine the time domain position of the second random access resource based on the time domain position of one of the at least one first random access resources.

[0135] For example, for example, the identifier indicating the first wave position in the second configuration information is 1, that is, wave position 1, and the index of the SSB to which the first wave position belongs is 1. According to the first configuration information, the random access resource associated with SSB1 to which wave position 1 belongs is determined to be RO1. The second configuration information indicates that the number of second random access resources is 2, so it can be determined that the time domain position where RO1 is located also includes 2 second random access resources that can be used for terminal devices in the second wave position to initiate random access.

[0136] Further optionally, the one or more second random access resources determined by the first random access resource and the first random access resource belong to a first random resource set, and the random access resources in the first random resource set are continuous in the frequency domain. The number of second random access resources may also be replaced by the number of random access resources included in the first random resource set, that is, the number of times the first random resource is frequency-division multiplexed.

[0137] Further optionally, the second configuration information may be represented by a parameter msg1-fdm-NTNbeam-r19 in the SIB, where msg1-fdm-NTNbeam-r19 includes one or more of the following parameters: msg1-fdm, SSB index, and wave ID. The parameter msg1-fdm indicates the number of frequency division multiplexing times of the first random resource, the SSB index indicates the index of the SSB associated with the first wave, and the wave ID indicates the index of the first wave.

[0138] In some implementations, the second random access resource is a random access resource among the random access resources respectively associated with the SSBs belonging to other wave positions except the first wave position among the multiple wave positions indicated by the first configuration information. It can be understood that in this implementation, the random access resources respectively associated with the SSBs belonging to other wave positions are transferred to the terminal device in the first wave position for use, which is beneficial to provide more random access resources for the terminal device in the first wave position, so that the terminal device in the first wave position can access the cell faster.

[0139] This implementation can be seen in the flowchart of a random access resource configuration method shown in FIG7 below. As shown in FIG7 , the random access resource configuration method includes steps 701 to 702. The specific implementation of step 701 is the same as that of step 301 above. For details, see the corresponding description of step 301 above, which will not be repeated here.

[0140] 701. The network device sends first configuration information, and correspondingly, the terminal device receives the first configuration information, where the first configuration information indicates random access resources respectively associated with SSBs to which multiple wave positions belong, and the random access resources respectively associated with SSBs to which multiple wave positions belong include N second random access resources, where the N second random access resources are random access resources associated with at least one first SSB to which the second wave position belongs, and the second wave belongs to multiple wave positions, where N is an integer greater than 0.

[0141] 702. The network device sends second configuration information and third configuration information. Correspondingly, the terminal device receives the second configuration information and / or the third configuration information. The second configuration information indicates that L second random access resources are used for the terminal device in the first wave position to initiate random access. The third configuration information indicates that K second random access resources among N second random access resources are invalid for the second wave position. The L second random access resources belong to K second random access resources, where L is an integer less than or equal to K and greater than 0, and K is an integer less than or equal to N and greater than 0.

[0142] In this embodiment of the present application, the N second random access resources are all random access resources associated with the SSB to which the second waveband belongs. The third configuration information indicates that K of the N second random access resources are invalid for the second waveband, which can also be understood as the K second random access resources being invalid for the terminal device in the second waveband, and the K second random access resources are not used for the terminal device in the second waveband to initiate random access. Optionally, the third configuration information can also be referred to as skipped RO configuration information.

[0143] The second configuration information indicates that L second random access resources out of the K second random access resources are used for the terminal device in the first wave position to initiate random access, that is, the L second random access resources are effective for the first wave position. It can be understood that the first configuration information indicates at least one first random access resource associated with the SSB to which the first wave position belongs. In combination with the second configuration information, the terminal device in the first wave position can use the at least one first random access resource and the L second random access resources to initiate random access. Optionally, the second configuration information can also be referred to as additional RO configuration information.

[0144] For example, as shown in FIG8 , it is assumed that the coverage area of ​​the satellite is divided into multiple cells, and there are 8 wave bits in one cell, namely wave bit 1, wave bit 2, ..., wave bit 8. And a maximum of four SSB indexes can be used in one cell, namely SSB0, SSB1, SSB2 and SSB3. Since there are 8 wave bits in total, SSB0 to SSB3 are cyclically multiplexed twice in eight beams, and each SSB index maps an RO resource. Specifically, the first configuration information sent by the network device indicates that the random access resource associated with SSB0 to which wave bit 1 belongs is RO0, and the random access resource associated with SSB1 to which wave bit 2 belongs is RO1, and the same applies to wave bits 3 to 8, as shown in FIG8 . Among them, wave bits 3 and 4 are the second wave bits, and wave bit 7 is the first wave bit. The third configuration information sent by the network device indicates that RO2 is invalid for wave bit 3, and RO3 is invalid for wave bit 4. The second configuration information sent by the network device indicates that RO2 and RO3 are used for the terminal device in waveband 7 to initiate random access. Combined with the first configuration information, the terminal device in waveband 7 can use RO2, RO3 and RO6 to initiate random access.

[0145] Based on the method proposed in the embodiment of the present application, the network device indicates through the third configuration information that K second random access resources are invalid for the second wave position, and through the second configuration information, indicates that L second random access resources among the K second random access resources are valid for the first wave position, and transfers the L second random access resources associated with the SSB originally belonging to the second wave position to the terminal device in the first wave position for use, providing more random access resources for the terminal device in the first wave position, which is conducive to enabling the terminal device in the first wave position to access the cell faster. This method can flexibly adjust the random access resource allocation of the network device to each wave position, so that it effectively matches the uneven distribution of services in the NTN scenario and improves the efficiency of random access resource utilization.

[0146] The terminal device receiving the second configuration information and / or the third configuration information may have the following three situations: 1. The terminal device receives the second configuration information and the third configuration information. 2. The terminal device receives the second configuration information. 3. The terminal device receives the third configuration information.

[0147] For the above situation 1, the network device can send the second configuration information and the third configuration information by broadcasting, that is, the second configuration information and the third configuration information can be carried in the broadcast message, that is, all terminal devices in the cell can receive the second configuration information and the third configuration information. Optionally, the broadcast message is SIB.

[0148] For the above cases 2 and 3, the network device can send its corresponding second configuration information or third configuration information to the terminal devices in the first or second wavelengths separately. Specifically, the terminal device sends the third configuration information to the terminal devices in the second wavelength and sends the second configuration information to the terminal devices in the first wavelength. Correspondingly, the terminal devices in the second wavelength can receive the third configuration information, and the terminal devices in the first wavelength can receive the second configuration information. Optionally, the second and third configuration information are beam-level configurations.

[0149] It is understandable that if the terminal device is located in the first wavelength, then corresponding to the above situation 2, the terminal device only receives the second configuration information. If the terminal device is located in the second wavelength, then corresponding to the above situation 3, the terminal device only receives the third configuration information.

[0150] Optionally, the second configuration information and the third configuration information may also be carried in the radio resource control layer (RRC) signaling, which belongs to the terminal device level configuration, that is, the network device sends the third configuration information to one or more terminal devices in the second wave position, and the network device sends the second configuration information to one or more terminal devices in the first wave position.

[0151] In addition to the method of sending the second configuration information and the third configuration information described above, the network device may also send a first broadcast message, which includes the second configuration information and the third configuration information; after sending the first broadcast message, the network device sends the first information and / or the second information, the first information is used to trigger the third configuration information to take effect, and the second information is used to trigger the second configuration information to take effect. It can be understood that the first broadcast message includes configuration information indicating that the K second random access resources are invalid for the second wave position, and / or configuration information that the L second random access resources are used for the terminal device in the first wave position to initiate random access. After the terminal device receives the first broadcast message and before receiving the first information and / or the second information, the third configuration information and / or the second configuration information are not effective, the terminal device in the second wave position can still continue to use the K second random access resources to initiate random access, and the terminal device in the first wave position cannot use the L second random access resources. It can be understood that after the terminal device in the second wave position receives the first information, it can be determined that the K second random access resources are invalid for the second wave position, and after the terminal device in the first wave position receives the second information, it can be determined that the L random access resources can be used to initiate random access. Further optionally, the first broadcast message is an SIB, and the first information and / or can be carried in downlink control information (Downlink Control Information, DCI) or group DCI.

[0152] In addition to the method described above, the network device may also send the second configuration information and the third configuration information in other ways, which is not limited in the embodiments of the present application.

[0153] In one possible implementation, when the first parameter of the second wave bit is less than or equal to the first threshold, and / or the first parameter of the first wave bit is greater than or equal to the second threshold, the network device sends second configuration information and third configuration information, the second threshold is greater than the first threshold, and the first parameter is one of the following parameters: traffic load, business volume, or number of business requests.

[0154] Optionally, the network device can periodically determine whether the first parameters of multiple wavebands are greater than or equal to a second threshold, or less than or equal to the first threshold, based on historical prior information about satellite communication scenarios. It is understood that if the first parameter of the second waveband is less than or equal to the first threshold, it indicates that the number of terminal devices in the second waveband is small and the access demand is low. Therefore, the second waveband can be referred to as a non-hotspot waveband. If the first parameter of the first waveband is greater than or equal to the second threshold, it indicates that the number of terminal devices in the first waveband is large and the access demand is high. Therefore, the first waveband can be referred to as a hotspot waveband. Because the access demand for the second waveband is low, the N first random access resources associated with the SSB to which the second waveband belongs include a relatively large number of idle random access resources. Transferring the L second random access resources associated with the SSB to which the second waveband belongs to the terminal devices in the first waveband has a relatively small impact on the terminal devices in the second waveband. At the same time, because the access demand for the first waveband is high, the terminal devices in the first waveband obtain more random access resources, which helps the terminal devices in the first waveband access the cell faster.

[0155] In one possible implementation, the third configuration information indicates the start time of each of the K second random access resources and / or the expiration time length of each of the K second random access resources. The start time of the second random access resource refers to the time unit in which the start time of the second random access resource is located, or the start time of the second random access resource is the time unit in which the start time of the second random access resource being invalid for the second wave bit is located. The time unit may be a frame, a time slot (slot), a symbol, etc., which is not limited in this embodiment of the present application. The expiration time length refers to the time length during which the second random access resource is invalid for the second wave bit. The start times of different second random access resources may be the same or different, and the expiration time lengths of different second random access resources may also be the same or different, which is not limited in this embodiment of the present application.

[0156] It is understandable that, for a terminal device in the second waveband, during the expiration period corresponding to the second random access resource, the second random access resource cannot be used to initiate random access. The start time of the expiration period is the start time of the second random access resource, and the length of the expiration period is the length of the expiration period corresponding to the first random access resource. After the expiration period ends, the second random access resource restores the configuration indicated by the first configuration information, that is, the terminal device in the second waveband can initiate random access through the first random access resource.

[0157] For example, as shown in Table 1 below, Table 1 shows the start time of three second random access resources and the expiration time lengths of the three second random access resources:

[0158] Table 1

[0159] The three second random access resources are RO1, RO2, and RO3. Taking RO1 as an example, a terminal device in the second waveband cannot initiate random access using RO1 during its corresponding invalid period 1. This invalid period 1 starts at Slot 1 and lasts for 10 milliseconds. After invalid period 1 ends, the terminal device in the second waveband can initiate random access using RO1.

[0160] Optionally, the third configuration information indicates the start time of each second random access resource in the K second random access resources. The specific implementation method may be that the third configuration information indicates the interval or offset between the start time of each second random access resource in the K second random access resources and the associated SSB end symbol time.

[0161] Optionally, when the third configuration information does not include the start time of the second random access resource, the start time of the second random access resource may be defaulted to the start time of the first random access resource after the third configuration information is received.

[0162] Optionally, the third configuration information indicates the expiration time length of each of the K second random access resources. Specifically, the third configuration information includes the number of consecutive expiration times of each of the K second random access resources. The third random access resource is invalid for the second wave bit within M consecutive association periods. The third random access resource is one of the K second random access resources. The number of consecutive expiration times of the third random access resource is M, where M is an integer greater than 0. It is understood that the expiration time length of the third random access resource is M association periods. The number of consecutive expiration times of different second random access resources may be the same or different.

[0163] Optionally, the first association cycle in the M consecutive association cycles is the first association cycle after receiving the third configuration information, or the third configuration information includes the start time of the third random access resource, and the start time of the third random access resource is the start time of the first association cycle in the M consecutive association cycles, or the start time of the third random access resource is within the start time of the first association cycle in the M consecutive association cycles.

[0164] Among them, in one association period, all SSB indexes can be mapped to RO resources at least once. Specifically, one association period can be configured as N times the corresponding PRACH configuration period. For example, assuming that the PRACH configuration period is 10ms, the association period can be configured as 1 times, 2 times, 4 times, 8 times or 16 times the configuration period, that is, the association period can be 10ms, 20ms, 40ms, 80ms, 160ms. At this time, the specific integer value of N is determined by the following conditions: for a specific PRACH configuration period, if its corresponding association period can take multiple values, then the minimum value that satisfies the condition that each SSB can be mapped to at least one RO is taken.

[0165] For example, the network device may configure the second wave bit through the parameter SkippingROConfig: SkippingROConfig={ SkippedROStartOffset=INTEGER{1,2,3,4} SkippedROValidity=ENUMERATED{1,2,4,8}}

[0166] Among them, SkippedROStartOffset represents the starting time of the second random access resource. Optionally, SkippedROStartOffsetSSB represents the interval or offset between the end symbol time of the second random access resource and the associated SSB, or the SkippedROStartOffset can also be defaulted, then the start time is the start time of the second random access resource most recent to the end time of the first SSB received by the terminal device, or the start time of the second random access resource most recent after receiving the third configuration information. SkippedROValidity represents the expiration time length of the second random access resource. Optionally, SkippedROValidity specifically represents the number of consecutive failures of the second random access resource.

[0167] Optionally, during the ineffective period, the network device sends at least one first SSB to the terminal device in the second waveband, and correspondingly, the terminal device in the second waveband receives the first SSB sent by the network device. Based on this implementation, the terminal device in the second waveband can still receive the SSB and synchronize with the network device even during the ineffective period of the second random access resource.

[0168] In a possible implementation, the second configuration information indicates the start time of each second random access resource in the L second random access resources and / or the effective time length of each second random access resource in the L second random access resources. The start time of the second random access resource refers to the time unit in which the start time of the second random access resource is located, or it can also be understood as the time unit in which the start time of the second random access resource for the first wave position is located. The time unit can be a frame, a time slot, a symbol, etc., which is not limited in this embodiment of the present application. The effective time length refers to the time length in which the second random access resource is effective for the first wave position. The start times of different second random access resources can be the same or different, and the effective time lengths of different second random access resources can also be the same or different, which is not limited in this embodiment of the present application.

[0169] It can be understood that for the terminal device of the first wave position, in addition to the random access resource associated with the SSB to which the first wave position belongs indicated in the first configuration information, the L first random access resources can also be used to initiate random access within the effective time period corresponding to the second random access resource. The start time of the effective time period is the start time of the second random access resource, and the length of the effective time period is the effective time length corresponding to the first random resource. After the effective time period ends, the second random access resource restores the configuration indicated by the first configuration information, that is, the terminal device in the first wave position can no longer initiate random access through the first random access resource.

[0170] For example, as shown in Table 2 below, Table 2 shows the start time of three second random access resources and the validity time lengths of the three second random access resources:

[0171] Table 2

[0172] The three second random access resources are RO1, RO2, and RO3. Taking RO1 as an example, a terminal device in the first waveband can initiate random access using RO1 during its corresponding effective time period 1. Effective time period 1 starts at Slot1 and lasts for 10ms. After effective time period 1 ends, the terminal device in the first waveband cannot initiate random access using RO1.

[0173] Optionally, the second configuration information indicates the start time of each second random access resource in the L second random access resources. The specific implementation method may be that the second configuration information indicates the interval or offset between the start time of each second random access resource in the L second random access resources and the associated SSB end symbol time.

[0174] Optionally, when the second configuration information does not include the start time of the second random access resource, the start time of the second random access resource may be defaulted to the start time of the first random access resource after the second configuration information is received.

[0175] Optionally, the third configuration information indicates the effective time length of each second random access resource in the L second random access resources, which can be specifically indicated in the following manner: the second configuration information includes the consecutive effective times of each second random access resource in the L second random access resources; within Q consecutive association periods, the fourth random access resource is used for the terminal device in the first wave position to initiate random access, the fourth random access resource is one of the L second random access resources, and the number of skips corresponding to the fourth random access resource is Q, where Q is an integer greater than 0. It can be understood that the effective time length of the fourth random access resource is Q association periods. The consecutive effective times of different second random access resources can be the same or different.

[0176] Optionally, the first association cycle in the consecutive Q association cycles is the first association cycle after receiving the second configuration information, or the second configuration information includes the start time of the fourth random access resource, and the start time of the fourth random access resource is the start time of the first association cycle in the consecutive Q association cycles, or the start time of the fourth random access resource is within the start time of the first association cycle in the consecutive Q association cycles.

[0177] Exemplarily, the network device may configure the first wavelet through the parameter AdditionalROConfig: AdditionalROConfig={AdditionalROStartOffset=SEQUENCE{INTEGER{1,2,3,4}} AdditionalROValidity=SEQUENCE{ENUMERATED{1,2,4,8}}}

[0178] Wherein, AdditionalROStartOffset represents the start time of the second random access resource. Optionally, AdditionalROStartOffset specifically represents the interval or offset between the start time of the second random access resource and the SSB end symbol time. AdditionalROValidity represents the validity time length of the second random access resource. Optionally, AdditionalROValidity specifically represents the number of consecutive validity times of the second random access resource.

[0179] In one possible implementation, the second configuration information indicates L second random access resources for a terminal device in the first waveband to initiate random access. The specific implementation is as follows: the second configuration information indicates an index of a second SSB, the second SSB is associated with the L second random access resources, and the second SSB belongs to at least one first SSB. Based on this implementation, the L second random access resources associated with the second SSB index are determined by the second SSB index, so that it can be determined that the L second random access resources can be used for a terminal device in the first waveband to initiate random access. Compared with directly indicating the indexes of the L second random access resources, this is beneficial to saving signaling overhead.

[0180] Exemplarily, the first configuration information indicates that the first waveband is associated with SSB1, and the random access resource associated with SSB1 is RO1. The second configuration information indicates SSB2 and SSB3, and the random access resource associated with SSB2 is RO2, and the random access resource associated with SSB3 is RO3. Through SSB2 and SSB3 indicated by the second configuration information, combined with the first configuration information, the terminal device in the first waveband determines that it can use the random access resources in RO1, RO2, and RO3 to initiate random access.

[0181] Optionally, the second configuration information may also indicate the index of the second SSB in the form of a bitmap. For example, each bit included in the bitmap corresponds to an SSB index, and each bit corresponds to a different SSB. The SSB index corresponding to the bit having the first numerical value is the second SSB index, or the SSB index associated with the first wave position indicated in the first configuration information and the second SSB index. The first numerical value is 1 or 0. Exemplarily, assuming that the SSB index corresponding to the bit having a value of 1 is the SSB index associated with the first wave position indicated in the first configuration information and the second SSB index, the SSB sent by the network device includes SSB0, SSB1, SSB2, and SSB3, wherein the bitmap includes 4 bits, and the i-th bit corresponds to SSB(i-1), where i is an integer less than 4 and greater than or equal to 0. When the bitmap is represented as 0101, it can be determined that the terminal device in the first wave position can initiate random access using the random access resources associated with SSB1 and SSB3.

[0182] In one possible implementation, after the network device sends the third configuration information, the network device also sends fourth configuration information, which is used to indicate that P of the K second random access resources are effective for the second wave position. Correspondingly, the terminal device in the second wave position receives the fourth configuration information, and P is a positive integer less than or equal to the K.

[0183] In one possible scenario, the third configuration information sent by the network device only includes the start time of the second random access resource, but does not include the expiration time length. In this case, the network device sends the fourth configuration information in order to trigger the restoration of the original configuration of the P second random access resources (i.e., the configuration indicated by the first configuration information). It can be understood that after receiving the fourth configuration information, the terminal device in the second wave position can use the P second random access resources to initiate random access. Based on this implementation method, the network device can flexibly adjust the expiration time length of the second random access resource for the second wave position by adjusting the sending timing of the fourth configuration information.

[0184] In another possible scenario, the third configuration information sent by the network device includes the start time and expiration time of the second random access resource. The network device then sends the fourth configuration information within the expiration time period corresponding to the second random access resource. After receiving the fourth configuration information, the terminal device in the second waveband can prematurely end the expiration time, that is, can initiate random access using the P second random access resources. Based on this implementation, the network device can flexibly adjust the expiration time of the second random access resource for the second waveband by timing the transmission of the fourth configuration information.

[0185] Optionally, the network device may trigger a timing for sending the fourth configuration information in the following two ways:

[0186] Mode 1: When the traffic volume under the second wave position is greater than the preset value, the network device sends the fourth configuration information. It can be understood that when the traffic volume under the second wave position is greater than the preset value, it means that the number of terminal devices in the current second wave position is large. For example, the second wave position may suddenly experience a traffic surge. Correspondingly, the number of terminal devices that need to access the cell is large. After the network device sends the third configuration information, all or part of the random access resources associated with the SSB to which the second wave position belongs are allocated to other wave positions for use. Before the expiration time expires, the terminal device in the second wave position has no resources for initiating random access, or the number of resources available for initiating random access in the second wave position is too small, which affects the terminal device in the second wave position from initiating random access. The network device can send the fourth configuration information before the expiration time expires, thereby terminating the invalidation configuration of P of the K second random access resources for the second wave position in advance, so that the P second random access resources can be provided to the terminal devices in the second wave position in a timely manner, thereby avoiding a large impact on the terminal devices in the second wave position.

[0187] Mode 2: After the network device receives the first signal, the first signal is used to request that the second random access resource take effect on the second wave position, and the network device sends the fourth configuration information. Optionally, the first signal is sent by the terminal device in the second wave position. Further optionally, when the buffer status of the terminal device in the second wave position meets certain conditions within the expiration time corresponding to the P second random access resources, for example, when the cached data size is greater than the third threshold, the terminal device will send the first signal to request to end the expiration time of the P second random access resources for the second wave position in advance. Optionally, the first signal can be a wake-up signal (WUS).

[0188] Optionally, the first signal may be carried on resources pre-configured by the network device. Specifically, the network device sends fifth configuration information, and correspondingly, the terminal device in the second wave position receives the fifth configuration information, and the fifth configuration information indicates the resources used to transmit the first signal. Further optionally, the fifth configuration information may be carried in a message in RRC signaling, DCI, or Media Access Control Control Element (MAC-CE). Further optionally, the RRC signaling may be an RRC release message.

[0189] Alternatively, the first signal is carried in NK second random access resources, where N is greater than K, and the NK second random access resources are other second random access resources in the N random access resources except the K second random access resources. It is understandable that the network device reserves the NK second random access resources in advance for sending the first signal.

[0190] In one possible implementation, the network device sends sixth configuration information to the terminal device in the first waveband, where the sixth configuration information indicates that Y of the L second random access resources are invalid for the first waveband. After receiving the sixth configuration information, the terminal device in the first waveband will no longer use the Y second random access resources to initiate random access, where Y is a positive integer less than or equal to L. Based on this implementation, the network device can flexibly adjust the validity period of the second random access resource for the first waveband through the sixth configuration information.

[0191] With the development of the world, the number of terminal devices is increasing, and the demand for network access is also growing. Given limited power, satellites cannot simultaneously cover every area with a large number of beams. Therefore, beam scanning is typically performed using time-division multiplexing (TDM), where a beam scans one location for a period of time and then scans another location after the period ends. However, each beam has a limited dwell time within a cell. Providing more random access resources to terminal devices within this limited time is a pressing technical challenge.

[0192] In order to provide more random access resources for terminal devices, an embodiment of the present application proposes a random access resource configuration method, as shown in Figure 9, the random access resource configuration method includes step 901. The execution subjects corresponding to the method shown in Figure 9 are terminal devices and network devices, or the execution subjects of the method shown in Figure 9 can be chips in terminal devices and chips in network devices. Figure 9 is illustrated using terminal devices and network devices as examples. The embodiment of the present application does not limit the execution subjects of the random access resource configuration method. The terminal device and network device can be the terminal device and network device in the communication system shown in Figure 1. Wherein:

[0193] 901. The network device sends first configuration information to the terminal device. Correspondingly, the terminal device receives the first configuration information from the network device. The first configuration information indicates a first random access resource format. In the first random access resource format, a time unit includes multiple sub-time units for transmitting random access messages.

[0194] In the embodiment of the present application, the random access resource format is used to specify the position of the random access resource in the time domain. Optionally, the random access resource refers to the resource used to transmit the random access message. The time unit refers to a time slot, a frame, a subframe, a sub-time slot or a symbol, etc. The sub-time unit refers to a time unit whose duration is less than or equal to the time unit, such as the time unit is a frame and the sub-time unit is a sub-time slot; or, the time unit is a time slot and the sub-time unit is a sub-time slot; or, the time unit is a time slot and the sub-time unit is a symbol, etc. The following mainly uses the example of the time unit being a frame and the sub-time unit being a subframe for explanation. Based on the method described in the embodiment of the present application, multiple sub-time units can be used to transmit random access messages within a time unit, which is beneficial to provide more random access resources for the terminal device.

[0195] In one possible implementation, the first random access resource format is a random access resource format in Format-2. Each transmission in Format-2 occupies a continuous 3.5 ms resource in the time domain. Because Format-2 does not have a coverage gap (the gap between the link budget and the decoding threshold), Format-2 offers better coverage performance in NTN scenarios.

[0196] In one possible implementation, the first random access resource format indicates the index of a sub-time unit within a time unit used to transmit a random access message. Optionally, the index of the sub-time unit within a time unit used to transmit a random access message is 1 or 5. Of course, the index of the sub-time unit within a time unit used to transmit a random access message may also be other indexes, which is not limited in this embodiment of the present application.

[0197] Exemplarily, when the time unit is a frame and the sub-time unit is a sub-frame, the first random access resource format may be represented as shown in the following Table 3:

[0198] Table 3

[0199] Among them, n f , x, y are used to determine the configuration period duration (number of frames) of the PRACH configuration index indicated by the row index. mod represents a modulus operation or a remainder operation. For example, x = 1, y = 0, mod (n f ,x)=ythat is, mod(n f ,1)=0, since any integer mod 1 is equal to 0, so n f It can be any integer, which means that the configuration period indicated by the row index is 1 frame length (10ms). For example, x=2, y=0, then mod(nf ,2)=0, all even numbers mod2 are equal to 0, then the configuration period is 2 frames long (20ms), and the starting position of each configuration period should start at an even frame number. For example, x=2,y=1, then mod(n f ,2)=1. Since all odd numbers mod2=1, the configuration period is still 20ms, and the starting position of each configuration period is an odd frame number.

[0200] In the PRACH format corresponding to row-59 (i.e., the PRACH format corresponding to the PRACH configuration index 59), one frame includes one subframe for transmitting a random access message, and the subframe number of the subframe is 5. The PRACH format corresponding to x-row (i.e., the PRACH format corresponding to the PRACH configuration index x) is the first random access resource format, and one frame includes two subframes for transmitting a random access message, and the subframe numbers of the two subframes are 1 and 5, respectively.

[0201] As shown in Figure 10, the SSBs sent by the network device include SSB0, SSB1, SSB2, and SSB3. In the PRACH format corresponding to row-59, one frame includes one RO. Correspondingly, one SSB is associated with one RO resource, SSB0 is associated with RO0, SSB1 is associated with RO1, SSB2 is associated with RO2, and SSB3 is associated with RO3. In the PRACH format corresponding to row-x, one frame includes two ROs. One SSB is associated with two RO resources, SSB0 is associated with RO0 and RO1, SSB1 is associated with RO2 and RO3, SSB2 is associated with RO4 and RO5, and SSB3 is associated with RO6 and RO7. It can be seen that compared with the time domain density of the random access resources in the PRACH format corresponding to row-59, the time domain resource density of the random access resources in the PRACH format corresponding to row-x is increased by 1 times.

[0202] Optionally, the first configuration information also includes a first row index. Before the network device sends the first configuration information, the network device sends second configuration information, and the second configuration information indicates a second random resource format corresponding to the first row index, and a time unit in the second random access resource format includes a sub-time unit for transmitting random access messages. The first configuration information indicates that the second random access resource format corresponding to the first row index in the random access resource format format-2 is the first random access resource format, that is, the terminal device will reinterpret the second random access resource format as the first random access resource format after receiving the first configuration information. For example, the first row index is 59, and the second random access resource format is the PRACH format corresponding to row-59, that is, one frame includes one subframe for transmitting random access messages, and the subframe number of the subframe is 5. After the network device sends the first configuration information, the terminal device reinterprets the PRACH format corresponding to row-59 as the PRACH format corresponding to row-x, and one frame includes two subframes for transmitting random access messages, and the subframe numbers of the two subframes are 1 and 5 respectively.

[0203] In one possible implementation, the first random access resource format indicates the sub-time unit index for transmitting the random access message in the first time unit, and indicates the sub-time unit index for transmitting the random access message in the second time unit, and the first time unit is adjacent to the second time unit. Optionally, the sub-time unit indexes for transmitting the random access message in the first time unit are 0, 4, and 8, and the sub-time unit indexes for transmitting the random access message in the first time unit are 2 and 6. Of course, the indexes of the sub-time units for transmitting the random access message in the first time unit and the second time unit may also be other indexes, which is not limited in this embodiment of the present application. Further optionally, the first time unit is a time unit with an odd index, and the second time unit is a time unit with an even index, or the second time unit is a time unit with an odd index, and the first time unit is a time unit with an even index.

[0204] Exemplarily, when the time unit is a frame and the sub-time unit is a sub-frame, the first random access resource format may be represented as shown in the following Table 4:

[0205] Table 4

[0206] Among them, n f, x, and y are jointly used to determine the configuration period duration (number of frames) of the prach configuration index indicated by the row index. For specific examples, please refer to the above description, and the embodiments of the present application will not be repeated here. The PRACH format corresponding to x1 (i.e., the PRACH format corresponding to the PRACH configuration index x1) indicates that in an even frame, the subframe numbers of the three subframes used to transmit random access messages are 0, 4, and 8, respectively. The PRACH format corresponding to x2 (i.e., the PRACH format corresponding to the PRACH configuration index x2) indicates that in an even frame, the subframe numbers of the three subframes used to transmit random access messages are 2 and 6, respectively. The first configuration information indicates that row-x1 and row-2 are enabled at the same time, thereby realizing the configuration of the first random access resource format.

[0207] For example, the format of the first random access resource can be as shown in Figure 11. Two frames include a first time unit and a second time unit. The first time unit corresponds to the PRACH format corresponding to x1, and one frame includes three random access resources. The second time unit corresponds to the PRACH format corresponding to x2, and one frame includes two random access resources. It can be seen that compared with the PRACH format corresponding to row-59, the time domain resource density of the random access resource of the PRACH format obtained by jointly configuring row-x1 and row-x2 is increased by 1.5 times.

[0208] Optionally, the first configuration information also includes a first row index. Before the network device sends the first configuration information, the network device sends second configuration information, where the second configuration information indicates a second random access resource format corresponding to the first row index, where a time unit in the second random access resource format includes a sub-time unit for transmitting a random access message. The first configuration information indicates that the second random access resource format corresponding to the first row index in the random access resource format format-2 is the first random access resource format, that is, after receiving the first configuration information, the terminal device will reinterpret the second random access resource format as the first random access resource format. For example, the first row index is 59, and the second random access resource format is the PRACH format corresponding to row-59, that is, a frame includes a subframe for transmitting random access messages, and the subframe number of the subframe is 5. After the network device sends the first configuration information, the terminal device reinterprets the PRACH format corresponding to row-59 as row-x1 and row-x1 and enables the corresponding PRACH format at the same time. In the two frames, one frame includes subframes with subframe numbers 0, 4, and 8 for transmitting random access messages, and the other frame includes subframes with subframe numbers 2 and 6 for transmitting random access messages.

[0209] To implement the various functions of the methods provided in the embodiments of the present application, both the terminal device and the network device may include hardware structures and / or software modules, and implement the aforementioned functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Whether a particular one of the aforementioned functions is implemented in the form of hardware structures, software modules, or a combination of hardware structures and software modules depends on the specific application and design constraints of the technical solution.

[0210] Please refer to Figure 12, which shows a schematic diagram of the structure of a communication device according to an embodiment of the present application. The communication device may be a terminal device or a network device, or a device that can be used in conjunction with a terminal device or a network device. In one possible implementation, the communication device may include a module or unit that corresponds to the method / operation / step / action performed by the terminal device and the network device in the method embodiments shown in Figures 3 and 9 above. The unit may be a hardware circuit, software, or a combination of hardware circuits and software.

[0211] The communication device shown in Figure 12 may include a processing unit 1201 and a communication unit 1202. Processing unit 1201 is configured to process data. Communication unit 1202 integrates a receiving unit and a transmitting unit. Communication unit 1202 may also be referred to as a transceiver unit. Alternatively, communication unit 1202 may be split into a receiving unit and a transmitting unit.

[0212] The communication device shown in FIG12 may be a terminal device, or a device that can be used in conjunction with the terminal device. The communication device may also be a chip system.

[0213] When the communication device is used to execute part or all of the functions of the terminal device in the method embodiment described in Figure 3 above, the communication unit 1202 is used to receive first configuration information, the first configuration information indicates random access resources respectively associated with the synchronization signal blocks SSB to which multiple wave positions belong, and the random access resources respectively associated with the SSB to which multiple wave positions belong include at least one first random access resource; the communication unit 1202 is also used to receive second configuration information, the second configuration information indicates at least one second random access resource, the at least one first random access resource and the at least one second random access resource are used for the terminal device in the first wave position to initiate random access, and the first wave position belongs to multiple wave positions.

[0214] In one possible implementation, the random access resources associated with the SSBs to which multiple wave positions belong include N second random access resources, where the N second random access resources are random access resources associated with at least one first SSB to which the second wave position belongs, the second wave belongs to multiple wave positions, and N is an integer greater than 0; the second configuration information indicates at least one second random access resource, including: the second configuration information indicates that L second random access resources among the N second random access resources are used for the terminal device in the first wave position to initiate random access, and L is a positive integer less than or equal to N.

[0215] In one possible implementation, the communication unit 1202 is also used to receive third configuration information, where the third configuration information indicates that K first random access resources among N second random access resources are invalid for the second wave position, and L first random access resources belong to K first random access resources; L is a positive integer less than or equal to K.

[0216] In a possible implementation manner, the third configuration information indicates a start time of each second random access resource in the K second random access resources and / or an expiration time length of each second random access resource in the K second random access resources.

[0217] In one possible implementation, the third configuration information indicates the expiration time length of each second random access resource in the K second random access resources, including: the third configuration information includes the number of consecutive failures of each second random access resource in the K second random access resources; within M consecutive association periods, the third random access resource is invalid for the second wave bit, the third random access resource is one of the K second random access resources, the number of consecutive failures of the third random access resource is M, and M is an integer greater than 0.

[0218] In a possible implementation manner, the second configuration information indicates a start time of each second random access resource in the L second random access resources and / or a valid time length of each second random access resource in the L second random access resources.

[0219] In one possible implementation, the second configuration information indicates the effective time length of each second random access resource in the L second random access resources, including: the second configuration information includes the consecutive effective times of each second random access resource of the L second random access resources; within Q consecutive association periods, the fourth random access resource is used for the terminal device in the first wave position to initiate random access, the fourth random access resource is one of the L second random access resources, and the number of skips corresponding to the fourth random access resource is Q, where Q is a positive integer.

[0220] In one possible implementation, the second configuration information indicates that L second random access resources out of N second random access resources are used for terminal devices in the first wave position to initiate random access, including: the second configuration information indicates the index of the second SSB, the second SSB is associated with the L second random access resources, and the second SSB belongs to at least one first SSB.

[0221] In a possible implementation, the communication unit 1202 is further configured to receive at least one first SSB from the network device.

[0222] In one possible implementation, after the communication unit 1202 receives the third configuration information from the network device, the communication unit 1202 is further used to receive fourth configuration information from the network device, where the fourth configuration information is used to indicate that P of the K second random access resources are effective for the second wave position, where P is a positive integer less than or equal to K.

[0223] In a possible implementation, before the communication unit 1202 receives the fourth configuration information from the network device, the communication unit 1202 is further configured to send a first signal to the network device, where the first signal is used to request that the second random access resource be effective for the second waveband.

[0224] In a possible implementation, before sending the first signal to the network device, the communication unit 1202 is further configured to receive fifth configuration information from the network device, where the fifth configuration information indicates resources for transmitting the first signal.

[0225] In a possible implementation, the first signal is a wake-up signal.

[0226] In one possible implementation, when the second random access resource overlaps with the fifth random access resource, the random access resource with higher priority among the second random access resource and the fifth random access resource is valid, and the random access resource with lower priority is invalid. The fifth random access resource is a random access resource associated with the SSB to which multiple wave positions other than the first wave position belong.

[0227] In one possible implementation, the second configuration information indicates a sixth random access resource and an offset value; when the sixth random access resource overlaps with the fifth random access resource, the second random access resource is determined based on the offset value and the sixth random access resource, the offset value includes the frequency domain offset and / or time domain offset between the second random access resource and the sixth random access resource, and the fifth random access resource is a random access resource associated with the SSB to which multiple wave positions other than the first wave position belong; when the sixth random access resource does not overlap with the fifth random access resource, the second random access resource is the sixth random access resource.

[0228] In a possible implementation manner, the second random access resource and one of the at least one first random access resource have the same time domain position but different frequency domain positions.

[0229] In one possible implementation, the second configuration information indicates at least one second random access resource, including: the second configuration information includes one or more of the following information: the number of second random access resources, the identifier of the first wave bit, or the index of the SSB to which the first wave bit belongs.

[0230] In a possible implementation manner, the second configuration information is carried in a system information block SIB.

[0231] When the communication device is used to execute part or all of the functions of the network device in the method embodiment described in Figure 3 above, the communication unit 1202 is used to send first configuration information, the first configuration information indicates the random access resources respectively associated with the synchronization signal blocks SSB to which multiple wave positions belong, and the random access resources respectively associated with the SSB to which multiple wave positions belong include at least one first random access resource; the communication unit 1202 is also used to send second configuration information, the second configuration information indicates at least one second random access resource, the at least one first random access resource and the at least one second random access resource are used for the terminal device in the first wave position to initiate random access, and the first wave position belongs to multiple wave positions.

[0232] In one possible implementation, the random access resources associated with the SSBs to which multiple wave positions belong include N second random access resources, where the N second random access resources are random access resources associated with at least one first SSB to which the second wave position belongs, the second wave belongs to multiple wave positions, and N is an integer greater than 0; the second configuration information indicates at least one second random access resource, including: the second configuration information indicates that L second random access resources among the N second random access resources are used for the terminal device in the first wave position to initiate random access, and L is a positive integer less than or equal to N.

[0233] In one possible implementation, the communication unit 1202 is also used to receive third configuration information, where the third configuration information indicates that K first random access resources among N second random access resources are invalid for the second wave position, and L first random access resources belong to K first random access resources; L is a positive integer less than or equal to K.

[0234] In a possible implementation manner, the third configuration information indicates a start time of each second random access resource in the K second random access resources and / or an expiration time length of each second random access resource in the K second random access resources.

[0235] In one possible implementation, the third configuration information indicates the expiration time length of each second random access resource in the K second random access resources, including: the third configuration information includes the number of consecutive failures of each second random access resource in the K second random access resources; within M consecutive association periods, the third random access resource is invalid for the second wave bit, the third random access resource is one of the K second random access resources, the number of consecutive failures of the third random access resource is M, and M is an integer greater than 0.

[0236] In a possible implementation manner, the second configuration information indicates a start time of each second random access resource in the L second random access resources and / or a valid time length of each second random access resource in the L second random access resources.

[0237] In one possible implementation, the second configuration information indicates the effective time length of each second random access resource in the L second random access resources, including: the second configuration information includes the consecutive effective times of each second random access resource of the L second random access resources; within Q consecutive association periods, the fourth random access resource is used for the terminal device in the first wave position to initiate random access, the fourth random access resource is one of the L second random access resources, and the number of skips corresponding to the fourth random access resource is Q, where Q is a positive integer.

[0238] In one possible implementation, the second configuration information indicates that L second random access resources out of N second random access resources are used for terminal devices in the first wave position to initiate random access, including: the second configuration information indicates the index of the second SSB, the second SSB is associated with the L second random access resources, and the second SSB belongs to at least one first SSB.

[0239] In a possible implementation, the communication unit 1202 is further configured to send at least one first SSB to a terminal device in a second waveband.

[0240] In one possible implementation, after sending the third configuration information, the communication unit 1202 is further used to send fourth configuration information, where the fourth configuration information is used to indicate that P of the K second random access resources are effective for the second wave position, where P is a positive integer less than or equal to K.

[0241] In a possible implementation, when the communication unit 1202 sends the fourth configuration information, the communication unit 1202 is specifically configured to send the fourth configuration information when the traffic volume at the first wavelength is greater than a preset value.

[0242] In a possible implementation, before sending the fourth configuration information, the communication unit 1202 is further configured to receive a first signal, where the first signal is used to request that the second random access resource be effective for the second waveband.

[0243] In a possible implementation, the communication unit 1202 is further configured to send fifth configuration information, where the fifth configuration information indicates resources used to transmit the first signal.

[0244] In a possible implementation, the first signal is a wake-up signal.

[0245] In one possible implementation, when the communication unit 1202 sends the second configuration information, the communication unit 1202 is specifically used to: send the second configuration information when the first parameter of the first wave position is greater than or equal to the second threshold; when the communication unit 1202 sends the third configuration information, the communication unit 1202 is specifically used to: send the third configuration information when the first parameter of the second wave position is less than or equal to the first threshold; the first parameter is one of the following parameters: traffic load, business volume or number of business requests.

[0246] In one possible implementation, when the second random access resource overlaps with the fifth random access resource, the random access resource with higher priority among the second random access resource and the fifth random access resource is valid, and the random access resource with lower priority is invalid. The fifth random access resource is a random access resource associated with the SSB to which multiple wave positions other than the first wave position belong.

[0247] In one possible implementation, the second configuration information indicates a sixth random access resource and an offset value; when the sixth random access resource overlaps with the fifth random access resource, the second random access resource is determined based on the offset value and the sixth random access resource, the offset value includes the frequency domain offset and / or time domain offset between the second random access resource and the sixth random access resource, and the fifth random access resource is a random access resource associated with the SSB to which multiple wave positions other than the first wave position belong; when the sixth random access resource does not overlap with the fifth random access resource, the second random access resource is the sixth random access resource.

[0248] In a possible implementation manner, the second random access resource and one of the at least one first random access resource have the same time domain position but different frequency domain positions.

[0249] In one possible implementation, the second configuration information indicates at least one second random access resource, including: the second configuration information includes one or more of the following information: the number of second random access resources, the identifier of the first wave bit, or the index of the SSB to which the first wave bit belongs.

[0250] In a possible implementation manner, the second configuration information is carried in a system information block SIB.

[0251] When the communication device is used to execute part or all of the functions of the terminal device in the method embodiment described in Figure 9 above, the communication unit 1202 is used to receive first configuration information from the network device, the first configuration information indicates a first random access resource format, and a time unit in the first random access resource format includes multiple sub-time units for transmitting random access messages.

[0252] In a possible implementation, the first random access resource format is a random access resource format in random access resource format-2.

[0253] In a possible implementation manner, the first random access resource format indicates an index of a sub-time unit in a time unit for transmitting a random access message.

[0254] In a possible implementation, the indexes of the sub-time units used to transmit the random access message in a time unit are 1 and 5.

[0255] In one possible implementation, the first random access resource format indicates a sub-time unit index for transmitting a random access message in a first time unit, and indicates a sub-time unit index for transmitting a random access message in a second time unit, where the first time unit is adjacent to the second time unit.

[0256] In a possible implementation, the sub-time unit indexes for transmitting the random access message in the first time unit are 0, 4, and 8, and the sub-time unit indexes for transmitting the random access message in the first time unit are 2 and 6.

[0257] In a possible implementation, the first configuration information further includes a first row index, and the first configuration information indicates that the random access resource format corresponding to the first row index in the random access resource format-2 is the first random access resource format.

[0258] When the communication device is used to execute part or all of the functions of the network device in the method embodiment described in Figure 9 above, the communication unit 1202 is used to send first configuration information, the first configuration information indicates a first random access resource format, and a time unit in the first random access resource format includes multiple sub-time units for transmitting random access messages.

[0259] In a possible implementation, the first random access resource format is a random access resource format in random access resource format-2.

[0260] In a possible implementation manner, the first random access resource format indicates an index of a sub-time unit in a time unit for transmitting a random access message.

[0261] In a possible implementation, the indexes of the sub-time units used to transmit the random access message in a time unit are 1 and 5.

[0262] In one possible implementation, the first random access resource format indicates a sub-time unit index for transmitting a random access message in a first time unit, and indicates a sub-time unit index for transmitting a random access message in a second time unit, where the first time unit is adjacent to the second time unit.

[0263] In a possible implementation, the sub-time unit indexes for transmitting the random access message in the first time unit are 0, 4, and 8, and the sub-time unit indexes for transmitting the random access message in the first time unit are 2 and 6.

[0264] In a possible implementation, the first configuration information further includes a first row index, and the first configuration information indicates that the random access resource format corresponding to the first row index in the random access resource format-2 is the first random access resource format.

[0265] Figure 13 shows a schematic diagram of the structure of another communication device. The communication device 1300 can be the terminal device in the above method embodiment, or can also be a chip, chip system, or processor that supports the terminal device to implement the above method. This communication device can be used to implement the method described in the above method embodiment. For details, please refer to the description of the above method embodiment.

[0266] Alternatively, the communication device 1300 may be the network device in the above method embodiment, or may be a chip, chip system, or processor that supports the network device to implement the above method. The communication device may be used to implement the method described in the above method embodiment, and for details, please refer to the description of the above method embodiment.

[0267] The communication device 1300 may include one or more processors 1301. The processor 1301 may be a general-purpose processor or a dedicated processor. For example, it may be a baseband processor or a central processing unit (CPU). The baseband processor may be used to process communication protocols and communication data, while the CPU may be used to control the communication device (e.g., a base station, a baseband chip, a terminal, a terminal chip, a DU or a CU), execute software programs, and process software program data.

[0268] Optionally, the communication device 1300 may include one or more memories 1302, on which instructions 1304 may be stored. The instructions may be executed on the processor 1301, causing the communication device 1300 to perform the method described in the above method embodiment. Optionally, the memory 1302 may also store data. The processor 1301 and memory 1302 may be provided separately or integrated together.

[0269] Optionally, the communication device 1300 may further include a transceiver 1305 and an antenna 1306. The transceiver 1305 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., and is configured to implement transceiver functions. The transceiver 1305 may include a receiver and a transmitter. The receiver may be referred to as a receiver or a receiving circuit, etc., and is configured to implement a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., and is configured to implement a transmitting function.

[0270] The communication device 1300 is a terminal device: the processor 1301 is used to perform the data processing operation of the terminal device in the above method embodiment. The transceiver 1305 is used to perform the data receiving and sending operation of the terminal device in the above method embodiment.

[0271] Alternatively, the communication device 1300 is a network device: the processor 1301 is used to execute the data processing operation of the network device in the above method embodiment. The transceiver 1305 is used to execute the data receiving and sending operation of the network device in the above method embodiment.

[0272] In another possible design, processor 1301 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and transmitting functions may be separate or integrated. The transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or the transceiver circuit, interface, or interface circuit may be used for transmitting or delivering signals.

[0273] In another possible design, processor 1301 may optionally store instructions 1303. Instructions 1303, when executed on processor 1301, may cause communication device 1300 to perform the method described in the above method embodiment. Instructions 1303 may be fixed in processor 1301. In this case, processor 1301 may be implemented by hardware.

[0274] In another possible design, the communication device 1300 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments. The processor and transceiver described in the embodiments of the present application can be implemented on an integrated circuit (IC), an analog IC, a radio frequency integrated circuit (RFIC), a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc.

[0275] The communication device described in the above embodiments may be a terminal device or a network device, but the scope of the communication device described in the embodiments of the present application is not limited thereto, and the structure of the communication device may not be limited to FIG13. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0276] (1) An independent integrated circuit (IC), or chip, or chip system or subsystem;

[0277] (2) A set of one or more ICs, optionally including a storage component for storing data and instructions;

[0278] (3) ASIC, such as modem (mobile station modem, MSM);

[0279] (4) Modules that can be embedded in other devices;

[0280] (5) Receivers, terminals, smart terminals, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, cloud devices, artificial intelligence devices, etc.;

[0281] (6)Others, etc.

[0282] In the case where the communication device can be a chip or a chip system, please refer to the chip structure diagram shown in Figure 14. The chip shown in Figure 14 includes a processor 1401 and an interface 1402. Optionally, it may also include a memory 1403. The number of processors 1401 can be one or more, and the number of interfaces 1402 can be multiple.

[0283] In one design, for a case where the chip is used to implement the functions of the terminal device in the embodiments of the present application:

[0284] The interface 1402 is used to input or output signals;

[0285] The processor 1401 is configured to execute the data processing operation of the terminal device in the above method embodiment.

[0286] In another design, for the case where the chip is used to implement the functions of the network device in the embodiments of the present application:

[0287] The interface 1402 is used to input or output signals;

[0288] The processor 1401 is configured to execute the data processing operation of the network device in the above method embodiment.

[0289] It is understandable that some optional features in the embodiments of the present application may, in certain scenarios, be implemented independently of other features, such as the solution on which they are currently based, to solve corresponding technical problems and achieve corresponding effects. They may also be combined with other features in certain scenarios as needed. Accordingly, the communication device provided in the embodiments of the present application may also implement these features or functions accordingly, which will not be described in detail here.

[0290] It should be understood that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or instructions in the form of software. The above processor can be a general-purpose processor, a digital signal processor (DSP), an ASIC, a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component.

[0291] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0292] The present application also provides a computer-readable medium for storing computer software instructions, which, when executed by a communication device, implement the functions of any of the above method embodiments.

[0293] The present application also provides a computer program product for storing computer software instructions, which, when executed by a communication device, implements the functions of any of the above method embodiments.

[0294] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented 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, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state drive (SSD)).

[0295] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

Claims

1. A random access resource configuration method, characterized in that: The method comprises: Receive first configuration information, where the first configuration information indicates random access resources respectively associated with synchronization signal blocks (SSBs) to which multiple wave positions belong, where the random access resources respectively associated with the SSBs to which the multiple wave positions belong include at least one first random access resource; Second configuration information is received, where the second configuration information indicates at least one second random access resource, where the at least one first random access resource and the at least one second random access resource are used for a terminal device in a first wave position to initiate random access, and the first wave position belongs to the multiple wave positions.

2. The method according to claim 1, characterized in that The random access resources associated with the SSBs to which the multiple wavelets belong include N second random access resources, where the N second random access resources are random access resources associated with at least one first SSB to which the second wavelet belongs, and the second wavelet belongs to the multiple wavelets, and N is an integer greater than 0; The second configuration information indicates at least one second random access resource, including: the second configuration information indicates that L of the N second random access resources are used for terminal devices in the first wave position to initiate random access, and L is a positive integer less than or equal to N.

3. The method according to claim 2, characterized in that The method further comprises: receiving third configuration information, where the third configuration information indicates that K first random access resources among the N second random access resources are invalid for the second wave position; The L first random access resources belong to the K first random access resources; The L is a positive integer less than or equal to the N, including: the L is a positive integer less than or equal to the K.

4. The method according to claim 3, characterized in that The third configuration information indicates a start time of each of the K second random access resources and / or an expiration time length of each of the K second random access resources.

5. The method according to claim 4, characterized in that The third configuration information indicating the expiration time length of each of the K second random access resources includes: the third configuration information includes a number of consecutive expiration times of each of the K second random access resources; Within M consecutive association periods, a third random access resource is invalid for the second wave position, the third random access resource is one of the K second random access resources, and the number of consecutive invalid times of the third random access resource is M, where M is an integer greater than 0.

6. The method according to any one of claims 3 to 5, characterized in that The second configuration information indicates a start time of each of the L second random access resources and / or a valid time length of each of the L second random access resources.

7. The method according to claim 6, characterized in that The second configuration information indicating the validity period of each of the L second random access resources includes: the second configuration information includes the number of consecutive validity periods of each of the L second random access resources; Within Q consecutive association periods, the fourth random access resource is used for the terminal device in the first wave position to initiate random access, the fourth random access resource is one of the L second random access resources, the number of skips corresponding to the fourth random access resource is Q, and Q is a positive integer.

8. The method according to any one of claims 3 to 7, characterized in that The second configuration information indicates that L of the N second random access resources are used for terminal devices in the first wave position to initiate random access, including: the second configuration information indicates the index of the second SSB, the second SSB is associated with the L second random access resources, and the second SSB belongs to the at least one first SSB.

9. The method according to any one of claims 3 to 8, characterized in that The method further comprises: At least one first SSB is received.

10. The method according to any one of claims 3 to 9, characterized in that After receiving the third configuration information, the method further includes: Fourth configuration information is received, where the fourth configuration information is used to indicate that P second random access resources among the K second random access resources are effective for the second wave position, where P is a positive integer less than or equal to K.

11. The method according to claim 10, characterized in that The method further comprises: A first signal is sent, where the first signal is used to request that the second random access resource be effective for the second wave position.

12. The method according to claim 11, characterized in that The method further comprises: Fifth configuration information is received, where the fifth configuration information indicates resources used to transmit the first signal.

13. The method according to claim 11 or 12, characterized in that The first signal is a wake-up signal.

14. The method according to claim 1, wherein When the second random access resource overlaps with the fifth random access resource, the random access resource with higher priority among the second random access resource and the fifth random access resource is valid, and the random access resource with lower priority is invalid, and the fifth random access resource is a random access resource associated with the SSB to which the multiple wave positions other than the first wave position belong.

15. The method according to claim 1, wherein The second configuration information indicates a sixth random access resource and an offset value; When the sixth random access resource overlaps with the fifth random access resource, the second random access resource is determined based on the offset value and the sixth random access resource, the offset value including a frequency domain offset and / or a time domain offset between the second random access resource and the sixth random access resource, and the fifth random access resource is a random access resource associated with an SSB to which the plurality of beam positions other than the first beam position belong; When the sixth random access resource does not overlap with the fifth random access resource, the second random access resource is the sixth random access resource.

16. The method according to claim 14 or 15, characterized in that The second random access resource and one of the at least one first random access resource have the same time domain position but different frequency domain positions.

17. The method according to claim 16, characterized in that The second configuration information indicates at least one second random access resource, including: the second configuration information includes one or more of the following information: the number of the second random access resources, the identifier of the first wave position, or the index of the SSB to which the first wave position belongs.

18. The method according to any one of claims 1 to 17, characterized in that The second configuration information is carried in a system information block SIB.

19. A random access resource configuration method, characterized in that: The method comprises: Sending first configuration information, where the first configuration information indicates random access resources respectively associated with synchronization signal blocks (SSBs) to which multiple wave positions belong, where the random access resources respectively associated with the SSBs to which the multiple wave positions belong include at least one first random access resource; Send second configuration information, where the second configuration information indicates at least one second random access resource, where the at least one first random access resource and the at least one second random access resource are used for a terminal device in a first wave position to initiate random access, and the first wave position belongs to the multiple wave positions.

20. The method according to claim 19, characterized in that The random access resources associated with the SSBs to which the multiple wavelets belong include N second random access resources, where the N second random access resources are random access resources associated with at least one first SSB to which the second wavelet belongs, and the second wavelet belongs to the multiple wavelets, and N is an integer greater than 0; The second configuration information indicates at least one second random access resource, including: the second configuration information indicates that L of the N second random access resources are used for terminal devices in the first wave position to initiate random access, and L is a positive integer less than or equal to N.

21. The method according to claim 20, characterized in that The method further comprises: Sending third configuration information, where the third configuration information indicates that K first random access resources among the N second random access resources are invalid for the second wave position, The L first random access resources belong to the K first random access resources; The L is a positive integer less than or equal to the N, including: the L is a positive integer less than or equal to the K.

22. The method according to claim 21, characterized in that The third configuration information indicates a start time of each of the K second random access resources and / or an expiration time length of each of the K second random access resources.

23. The method according to claim 22, characterized in that: The third configuration information indicating the expiration time length of each of the K second random access resources includes: the third configuration information includes a number of consecutive expiration times of each of the K second random access resources; Within M consecutive association periods, a third random access resource is invalid for the second wave position, the third random access resource is one of the K second random access resources, and the number of consecutive invalid times of the third random access resource is M, where M is an integer greater than 0.

24. The method according to any one of claims 20 to 23, characterized in that: The second configuration information indicates a start time of each of the L second random access resources and / or a valid time length of each of the L second random access resources.

25. The method according to claim 24, characterized in that The second configuration information indicating the validity period of each of the L second random access resources includes: the second configuration information includes the number of consecutive validity periods of each of the L second random access resources; Within Q consecutive association cycles, the third random access resource is used for the terminal device in the first wave position to initiate random access, the third random access resource is one of the L second random access resources, the number of skips corresponding to the third random access resource is N, and Q is a positive integer.

26. The method according to any one of claims 20 to 25, characterized in that The second configuration information indicates L second random access resources for terminal devices in the first wave position to initiate random access, including: the second configuration information indicates the index of the second SSB, the second SSB is associated with the L second random access resources, and the second SSB belongs to the at least one first SSB.

27. The method according to any one of claims 20 to 26, characterized in that The method further comprises: Send the at least one first SSB to the terminal device in the second wave position.

28. The method according to any one of claims 20 to 27, characterized in that After sending the third configuration information, the method further includes: Send fourth configuration information, where the fourth configuration information is used to indicate that P second random access resources among the K second random access resources are effective for the second wave position, where P is a positive integer less than or equal to K.

29. The method according to claim 28, characterized in that The sending of the fourth configuration information includes: When the traffic volume at the second wavelength is greater than a preset value, the fourth configuration information is sent.

30. The method according to claim 28, wherein The sending of the fourth configuration information includes: receiving a first signal, where the first signal is used to request that the second random access resource be effective for the second waveband; The fourth configuration information is sent according to the first signal.

31. The method according to claim 30, wherein The method further comprises: Fifth configuration information is sent, where the fifth configuration information indicates resources used to transmit the first signal.

32. The method according to claim 30 or 31, characterized in that The first signal is a wake-up signal.

33. The method according to any one of claims 21 to 31, characterized in that The sending of the second configuration information includes: When the first parameter of the first beam position is greater than or equal to a second threshold, sending the second configuration information; The sending of the third configuration information includes: When the first parameter of the second beam position is less than or equal to a first threshold, sending the third configuration information; The first parameter is one of the following parameters: traffic load, business volume or number of business requests.

34. The method according to claim 19, wherein When the second random access resource overlaps with the fifth random access resource, the random access resource with higher priority among the second random access resource and the fifth random access resource is valid, and the random access resource with lower priority is invalid, and the fifth random access resource is a random access resource associated with the SSB to which the multiple wave positions other than the first wave position belong.

35. The method according to claim 19, wherein The second configuration information indicates a sixth random access resource and an offset value; When the sixth random access resource overlaps with the fifth random access resource, the second random access resource is determined based on the offset value and the sixth random access resource, the offset value including a frequency domain offset and / or a time domain offset between the second random access resource and the sixth random access resource, and the fifth random access resource is a random access resource associated with an SSB to which the plurality of beam positions other than the first beam position belong; When the sixth random access resource does not overlap with the fifth random access resource, the second random access resource is the sixth random access resource.

36. The method according to claim 34 or 35, characterized in that The second random access resource and one of the at least one first random access resource have the same time domain position but different frequency domain positions.

37. The method according to claim 36, wherein The second configuration information indicates at least one second random access resource, including: the second configuration information includes one or more of the following information: the number of the second random access resources, the identifier of the first wave position, or the index of the SSB to which the first wave position belongs.

38. The method according to any one of claims 34 to 37, wherein: The second configuration information is carried in a system information block SIB.

39. A communication device, characterized in that: The communication device includes a module or unit for executing the method according to any one of claims 1 to 18, or the communication device includes a module or unit for executing the method according to any one of claims 19 to 38.

40. A communication device, characterized in that: The method comprises a processor coupled to a memory, wherein the processor is configured to execute a computer program or instruction stored in the memory to implement the method according to any one of claims 1 to 18, or to implement the method according to any one of claims 19 to 38.

41. The device according to claim 40, characterized in that The device further includes the memory and / or a transceiver, and the transceiver is configured to transmit and receive data and / or signaling.

42. A communication device, characterized in that The method comprises a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, wherein the processor causes the method according to any one of claims 1 to 18 to be executed through a logic circuit or an execution instruction, or the processor causes the method according to any one of claims 19 to 38 to be executed through a logic circuit or an execution instruction.

43. A computer-readable storage medium, characterized in that The storage medium stores a computer program or instruction. When the computer program or instruction is executed by the communication device, the method according to any one of claims 1 to 18 is executed, or the method according to any one of claims 19 to 38 is executed.

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