WO2026001056A1 - 一种随机接入方法、设备、装置及存储介质 - Google Patents
一种随机接入方法、设备、装置及存储介质Info
- Publication number
- WO2026001056A1 WO2026001056A1 PCT/CN2025/080045 CN2025080045W WO2026001056A1 WO 2026001056 A1 WO2026001056 A1 WO 2026001056A1 CN 2025080045 W CN2025080045 W CN 2025080045W WO 2026001056 A1 WO2026001056 A1 WO 2026001056A1
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- WIPO (PCT)
- Prior art keywords
- random access
- index
- resource
- resources
- mask index
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/06—Airborne or Satellite Networks
Definitions
- This disclosure relates to the field of communication technology, and more specifically, to a random access method, device, apparatus, and storage medium.
- RO Random Access Occasion
- PRACH Physical Random Access Channel
- SSB Synchronization Signal Block
- This disclosure provides at least one random access method, device, apparatus, and storage medium to solve the efficiency problem caused by RO resources not being present during the dwell time of a satellite communication system.
- embodiments of this disclosure provide a random access method applied to a network device, the method comprising:
- the physical random access channel (PRACH) configuration index is determined; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource during the dwell time of each beam position.
- PRACH physical random access channel
- the random access configuration information includes the PRACH configuration index.
- each RO resource is indexed and sorted according to the time it falls within the dwell time of each wave position.
- the method further includes:
- the random access configuration information also includes the first random access mask index
- a first dedicated RO resource is determined for the user equipment (UE) to meet the target characteristic combination, and a first random access mask index corresponding to the first dedicated RO resource is determined.
- the first random access mask index is used for the UE that satisfies the target characteristic combination to determine the first dedicated RO resource from each RO resource corresponding to the PRACH configuration index.
- the method further includes:
- a second dedicated RO resource is determined for the connected-mode user equipment (UE), and a second random access mask index corresponding to the second dedicated RO resource is determined; wherein, there is a mapping relationship between each random access mask index and the RO index; the second random access mask index is used to determine the second dedicated RO resource from each RO resource;
- the mapping relationship between each random access mask index and the RO index includes:
- the random access mask index is equal to the value of the RO index modulo operation plus 1, and the modulo value is equal to the preset maximum number.
- the mapping relationship between each random access mask index and the RO index includes:
- the RO index includes 9 to 12; when the random access mask index is 12, the RO index includes 13 to 16.
- the random access configuration information also includes frequency domain reuse degree and hopping beam pattern; the hopping beam pattern is used to indicate the dwell time of each beam position;
- Frequency domain reuse, beam hopping pattern, and the number of ROs in the time domain for each subframe indicated by the PRACH configuration index are used to determine the RO resources for initiating random access.
- sending random access configuration information includes:
- Random access configuration information is sent via system messages.
- sending a second random access mask index to a connected UE includes:
- the second random access mask index is sent to the connected UE via dedicated signaling.
- embodiments of this disclosure provide another random access method applied to a user equipment (UE), the method comprising:
- the random access configuration information includes the physical random access channel (PRACH) configuration index; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource during the dwell time of each wavelength;
- PRACH physical random access channel
- each RO resource is indexed and sorted according to the time it falls within the dwell time of each wave position.
- the UE has a combination of target characteristics
- the random access configuration information also includes a first random access mask index; the first random access mask index is used to allocate UEs with target characteristic combinations; there is a mapping relationship between each random access mask index and the RO index;
- the random access opportunity (RO) resources are determined, including:
- the first dedicated RO resource is determined from each RO resource corresponding to the PRACH configuration index
- Initiating random access based on RO resources includes:
- the UE does not have a target feature combination
- the random access configuration information also includes a first random access mask index; the first random access mask index is used to allocate UEs with target characteristic combinations; there is a mapping relationship between each random access mask index and the RO index;
- the random access opportunity (RO) resources are determined, including:
- Initiating random access based on RO resources includes:
- the method further includes:
- the random access opportunity (RO) resources are determined, including:
- the second dedicated RO resource for the UE is determined from each RO resource corresponding to the PRACH configuration index;
- Initiating random access based on RO resources includes:
- the mapping relationship between each random access mask index and the RO index includes:
- the random access mask index is equal to the value of the RO index modulo operation plus 1, and the modulo value is equal to the preset maximum number.
- the mapping relationship between each random access mask index and the RO index includes:
- the RO index includes 9 to 12; when the random access mask index is 12, the RO index includes 13 to 16.
- the random access configuration information also includes frequency domain reuse degree and hopping beam pattern; the hopping beam pattern is used to indicate the dwell time of each beam position;
- the random access opportunity (RO) resources are determined, including:
- the RO resources are determined based on the number of ROs in the time domain, the frequency domain reuse, and the hopping beam pattern of each subframe indicated by the PRACH configuration index.
- receiving random access configuration information sent by a network device includes:
- receiving a second random access mask index sent by a network device in a connected state includes:
- embodiments of this disclosure provide a random access device, including a memory, a transceiver, and a processor;
- Memory is used to store computer programs; transceiver is used to send and receive data under the control of the processor; processor is used to read the computer programs from memory and perform the following operations:
- the physical random access channel (PRACH) configuration index is determined; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource during the dwell time of each beam position.
- PRACH physical random access channel
- the random access configuration information includes the PRACH configuration index.
- each RO resource is indexed and sorted according to the time it falls within the dwell time of each wave position.
- the random access configuration information further includes a first random access mask index
- the processor is also used to perform:
- a first dedicated RO resource is determined for the user equipment (UE) to meet the target characteristic combination, and a first random access mask index corresponding to the first dedicated RO resource is determined.
- the first random access mask index is used for the UE that satisfies the target characteristic combination to determine the first dedicated RO resource from each RO resource corresponding to the PRACH configuration index.
- the processor is also configured to perform:
- a second dedicated RO resource is determined for the connected-mode user equipment (UE), and a second random access mask index corresponding to the second dedicated RO resource is determined; wherein, there is a mapping relationship between each random access mask index and the RO index; the second random access mask index is used to determine the second dedicated RO resource from each RO resource;
- the mapping relationship between each random access mask index and the RO index includes:
- the random access mask index is equal to the value of the RO index modulo operation plus 1, and the modulo value is equal to the preset maximum number.
- the mapping relationship between each random access mask index and the RO index includes:
- the RO index includes 9 to 12; when the random access mask index is 12, the RO index includes 13 to 16.
- the random access configuration information also includes frequency domain reuse degree and hopping beam pattern; the hopping beam pattern is used to indicate the dwell time of each beam position;
- Frequency domain reuse, beam hopping pattern, and the number of ROs in the time domain for each subframe indicated by the PRACH configuration index are used to determine the RO resources for initiating random access.
- sending a second random access mask index to a connected UE includes:
- the second random access mask index is sent to the connected UE via dedicated signaling.
- embodiments of this disclosure also provide another random access device for a user equipment (UE), including a memory, a transceiver, and a processor;
- UE user equipment
- Memory is used to store computer programs; transceiver is used to send and receive data under the control of the processor; processor is used to read the computer programs from memory and perform the following operations:
- the random access configuration information includes the physical random access channel (PRACH) configuration index; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource during the dwell time of each wavelength;
- PRACH physical random access channel
- each RO resource is indexed and sorted according to the time it falls within the dwell time of each wave position.
- the UE has a combination of target characteristics
- the random access configuration information also includes a first random access mask index; the first random access mask index is used to allocate UEs with target characteristic combinations; there is a mapping relationship between each random access mask index and the RO index;
- Initiating random access based on RO resources includes:
- the UE does not have a target feature combination
- the random access configuration information also includes a first random access mask index; the first random access mask index is used to allocate UEs with target characteristic combinations; there is a mapping relationship between each random access mask index and the RO index;
- the random access opportunity (RO) resources are determined, including:
- Initiating random access based on RO resources includes:
- the processor is also configured to perform:
- the random access opportunity (RO) resources are determined, including:
- the second dedicated RO resource for the UE is determined from each RO resource corresponding to the PRACH configuration index;
- Initiating random access based on RO resources includes:
- the random access mask index is equal to the value of the RO index modulo operation plus 1, and the modulo value is equal to the preset maximum number.
- the RO index includes 9 to 12; when the random access mask index is 12, the RO index includes 13 to 16.
- the random access configuration information also includes frequency domain reuse degree and hopping beam pattern; the hopping beam pattern is used to indicate the dwell time of each beam position;
- receiving random access configuration information sent by a network device includes:
- embodiments of this disclosure also provide a random access device, including:
- the acquisition unit is used to acquire beam hopping information
- the first determining unit is used to determine the Physical Random Access Channel (PRACH) configuration index based on beam hopping information; the PRACH configuration index indicates that there is at least one Random Access Opportunity (RO) resource during the dwell time of each beam position.
- PRACH Physical Random Access Channel
- RO Random Access Opportunity
- the sending unit is used to send random access configuration information, which includes the PRACH configuration index.
- embodiments of this disclosure also provide another random access device, including:
- the receiving unit is used to receive random access configuration information sent by the network device; the random access configuration information includes the Physical Random Access Channel (PRACH) configuration index; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource during the dwell time of each wavelength.
- PRACH Physical Random Access Channel
- the second determining unit is used to determine random access opportunity (RO) resources based on random access configuration information
- the access unit is used to initiate random access based on RO resources.
- embodiments of this disclosure also provide a processor-readable storage medium storing a computer program for causing a processor to perform the steps of the random access method of the first aspect above, or to perform the steps of the random access method of the second aspect above.
- This disclosure provides a random access method, device, apparatus, and storage medium.
- the PRACH configuration corresponding to the PRACH configuration index ensures that at least one RO resource is available during the dwell time of each wavelength position. This enables the user equipment (UE) to find an available RO resource to initiate random access when determining the RO resource to initiate random access based on the PRACH configuration index, thereby improving the success rate and efficiency of access and ensuring access stability and reliability.
- UE user equipment
- Figure 1 shows a schematic diagram of a satellite communication system according to an embodiment of this disclosure
- Figure 3 shows a flowchart of a random access method provided in an embodiment of this disclosure
- Figure 4 shows one of the schematic diagrams illustrating the mapping relationship between RO resources and wave positions provided in the embodiments of this disclosure
- Figure 5 shows a second schematic diagram of the mapping relationship between RO resources and wave positions provided in the embodiments of this disclosure
- Figure 6 shows a schematic diagram of another random access method provided in an embodiment of this disclosure.
- Figure 7 shows a schematic diagram of a random access device provided in an embodiment of this disclosure.
- Figure 8 shows a schematic diagram of another random access device provided in an embodiment of this disclosure.
- Figure 10 shows a schematic diagram of another random access device provided in an embodiment of this disclosure.
- the term “multiple” refers to two or more, and other quantifiers are similar.
- the term “and/or” describes the relationship between related objects, indicating that three relationships can exist.
- a and/or B can represent: A existing alone, A and B existing simultaneously, and B existing alone.
- the character “/” generally indicates that the preceding and following related objects have an "or” relationship.
- the term “at least one” in this document means any combination of at least two of a plurality of objects, such as including at least one of A, B, and C, which can represent including any one or more elements selected from the set consisting of A, B, and C.
- the embodiments of this disclosure can be applied to non-terrestrial communication systems (such as satellite communication systems).
- the satellite communication system includes a UE and network equipment.
- the network equipment may include satellite nodes (for ease of explanation, only one satellite is shown in the figure, for example, a non-geostationary orbit satellite), and may also include core network equipment.
- the UE can wirelessly communicate with the satellite nodes, and the satellite nodes can wirelessly communicate with the core network equipment, wherein:
- Satellite nodes may include base stations, and may include orbital receivers or repeaters for relaying information. Satellite nodes can communicate and interact with core network equipment to provide communication services to the UE.
- the network equipment interacting with the UE may refer to a base station.
- UE can include smartphones, cellular phones, smartwatches, smart tablets, personal digital assistant computers, laptops, servers, gateways (GW), controllers, wireless modems, sensors, mobile devices (such as bicycles/cars/vehicles), etc.
- smartphones cellular phones, smartwatches, smart tablets, personal digital assistant computers, laptops, servers, gateways (GW), controllers, wireless modems, sensors, mobile devices (such as bicycles/cars/vehicles), etc.
- GW gateways
- PRACH Physical Random Access Channel
- SSB Synchronization Signal Block
- the total RO resources within a cell are arranged within a PRACH cycle, and an SSB index can map to a maximum of eight RO resources. This method ensures that each SSB can be associated with an appropriate RO resource, enabling User Equipment (UE) to successfully access the network in the terrestrial communication system.
- UE User Equipment
- the order in which SSB indices are mapped to ROs can be as follows: First, within a RO, they are arranged in ascending order of the preamble index; second, multiple frequency-division multiplexed ROs are arranged in ascending order of their frequency resource indices; third, time-division multiplexed ROs within a PRACH slot are arranged in ascending order of their time resource indices; fourth, they are arranged in ascending order of their PRACH slot indices. After one round of SSB-to-RO mapping is completed, each SSB actually transmitted within an SSB cycle is mapped to an RO once.
- CBRA Contention-Based Random Access
- Figure 2 is a schematic diagram of the mapping relationship between SSBs and ROs in a terrestrial communication system provided by an embodiment of this disclosure.
- the horizontal axis represents time, and the vertical axis represents frequency.
- the RO resources corresponding to each SSB are distributed according to time and frequency.
- these mapping relationships are fixed, and each SSB has corresponding RO resources distributed sequentially.
- the beam will hop between different wavelengths.
- the RO mapping method of terrestrial communication systems is still used for configuration, it may result in the RO resource of a certain SSB mapping not being present during the dwell time of that wavelength. Since the dwell time of the satellite beam at each wavelength is limited and dynamically changes, the RO resource mapping in this case will not be able to ensure that user equipment can successfully access the network during the dwell time of the wavelength.
- beam hopping in a satellite communication system refers to the continuous switching of a satellite's beam between different geographical locations to cover a larger area. This switching occurs over time periods, with each beam covering a specific area (called a beam position) for a specific time period (called dwell time).
- the beam hops between different radii, and the dwell time for each radii is limited. If the RO mapping rules of the terrestrial system are still followed, then when an SSB is mapped to a radii, if there is no corresponding RO resource (such as RO1, RO2, etc.) for that radii during the dwell time of that radii, the user equipment (UE) will not be able to find a suitable RO resource to attempt random access during the dwell time of that radii, resulting in access failure.
- RO1, RO2, etc. the user equipment
- SSB1 corresponds to beam position 1
- the RO resource mapped by SSB1 is within the dwell time of beam position 1.
- SSB2 corresponds to beam position 2, but since RO resources are allocated sequentially, the RO resource mapped by SSB2 may still be within the dwell time of beam position 1, but not within the dwell time of beam position 2, resulting in SSB2 mapping an unusable RO resource.
- this disclosure provides a random access method, device, apparatus, and storage medium.
- the PRACH configuration corresponding to the PRACH configuration index ensures that at least one RO resource is available during the dwell time of each wavelength position. This enables the user equipment (UE) to find an available RO resource to initiate random access when determining the RO resource to initiate random access based on the PRACH configuration index, thereby improving the success rate and efficiency of access and ensuring the access stability and reliability of the system.
- UE user equipment
- This disclosure provides a random access method, device, apparatus, and storage medium to solve the efficiency problem caused by RO resources not being present during the dwell time of a satellite communication system.
- the method and apparatus are based on the same inventive concept. Since the methods and apparatus solve problems in similar ways, the implementation of the apparatus and methods can refer to each other, and the repeated parts will not be described again.
- LTE Long Term Evolution
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- LTE-A Long Term Evolution Advanced
- UMTS Universal Mobile Telecommunication System
- WiMAX Worldwide Interoperability for Microwave Access
- 5G New Radio (NR) systems and their evolved communication systems.
- LTE Long Term Evolution
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- LTE-A Long Term Evolution Advanced
- UMTS Universal Mobile Telecommunication System
- WiMAX Worldwide Interoperability for Microwave Access
- NR 5G New Radio
- EPS Evolved Packet System
- 5GS 5G system
- the terminal device (or terminal) involved in the embodiments of this disclosure can be a device that provides voice and/or data connectivity to a user, a handheld device with wireless connectivity, or other processing devices connected to a wireless modem.
- the name of the terminal device may differ in different systems; for example, in a 5G system, the terminal device can be called a User Equipment (UE).
- the wireless terminal device can be a USB storage device, other personal computer memory devices, and a dongle. It can also communicate with one or more core networks (CNs) via a Radio Access Network (RAN).
- the wireless terminal device can be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device.
- PCS Personal Communication Service
- SIP Session Initiated Protocol
- WLL Wireless Local Loop
- PDA Personal Digital Assistants
- PDA personal computers
- tablets Tablets
- MTC Machine-type Communication
- Wireless terminal devices can also be referred to as systems, subscriber units, subscriber stations, mobile stations, mobile devices, remote stations, access points, remote terminals, access terminals, user terminals, user agents, user devices, and wireless access devices and routers/modems that meet the limitations of this definition, but are not limited to these in the embodiments of this disclosure.
- the network device disclosed in this embodiment may include a base station.
- the base station may include multiple cells providing services to terminals.
- the base station may also be called an access point, or a device in the access network that communicates with a wireless terminal device via one or more sectors on the air interface, or other names.
- the network device can be used to interchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network.
- IP Internet Protocol
- the network device can also coordinate the attribute management of the air interface.
- the network devices involved in this disclosure can be evolved network devices (eNBs or e-NodeBs) in a long-term evolution (LTE) system, 5G base stations (gNBs) in a next-generation 5G network architecture, or home evolved Node Bs (HeNBs), relay nodes, femtos, picos, network testing equipment, satellite base stations, etc., and are not limited in this disclosure.
- network devices may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized and distributed units may also be geographically separated.
- the following description uses the aforementioned network device as an example to illustrate the random access method provided in this embodiment.
- the aforementioned beam switching information can indicate the switching and dwell time distribution between different beams.
- beam switching information can be represented by a beam skipping pattern.
- the beam skipping pattern may include at least one of the following: timing pattern, dwell time, beam selection order, beam switching strategy, etc.
- the timing pattern describes the time sequence of beam switching scans, and can include information such as the beam scanning period, interval, duration, and beam position order. For example, it can be specified that the beam switches once at regular intervals.
- Dwell time indicates the start and duration of dwell time for each bit. A longer dwell time can increase the stability of communication quality, but may also reduce the system's responsiveness to dynamic changes.
- the beam selection order specifies the order or priority of which beams to use during beam hopping scan, and can be dynamically adjusted based on channel conditions, device location, or network load.
- Beam switching strategies describe the specific strategies and algorithms for beam-hopping scanning. For example, beam-hopping scanning can be performed based on previous communication quality feedback or predicted channel conditions.
- the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource during the dwell time of each beam position.
- RO random access opportunity
- the Physical Random Access Channel (PRACH) configuration index is used to indicate and configure the index values of relevant parameters required by the User Equipment (UE) during random access. Using this index value, the corresponding PRACH configuration can be determined.
- PRACH Physical Random Access Channel
- the PRACH configuration index is used to determine how PRACH resources are configured in each cell so that user equipment (UE) can send random access requests at specified times and frequencies to establish a connection with the base station.
- UE user equipment
- the dwell time of each wavelength position can be determined based on the beam hopping information, and the number of RO resources required for each wavelength position can be determined.
- the PRACH configurations can be traversed to determine the PRACH configurations that ensure at least one random access opportunity (RO) resource exists during the dwell time of each wavelength position, and the PRACH configuration index corresponding to this PRACH configuration can be determined.
- RO random access opportunity
- each RO resource can be indexed and sorted according to the time it falls within the dwell time of each wave position. That is, the RO resource that falls within the dwell time of the wave position and has an index value of 1 is closest to the start time of the dwell time of the wave position and is after the start time of the dwell time of the wave position.
- Network devices can reach a consensus with the corresponding UEs, assuming that each RO resource can be indexed and sorted according to the time it spends within each wavelength range. In this way, RO resources can be mapped to wavelength ranges, ensuring that the RO resources are located within the current wavelength range when the UE uses random access configuration information to determine the RO resources.
- FIG 4 this is one of the schematic diagrams illustrating the mapping relationship between RO resources and wave positions provided in this embodiment of the present disclosure.
- the horizontal axis represents time, and the vertical axis represents frequency.
- the RO resources corresponding to each wave position are distributed according to time and frequency.
- Msg1-FDM 4
- the number of time domain ROs falling into each wave position is greater than 2.
- one SSB typically maps a maximum of 8 RO resources, while in this embodiment of the present disclosure, one wave position can map more than 8 RO resources.
- the random access configuration information includes the PRACH configuration index.
- the aforementioned random access configuration information can be used by the user equipment (UE) to determine the RO resource for initiating random access and to initiate random access based on the RO resource.
- UE user equipment
- the determined PRACH configuration index and other random access configuration information can be sent. For example, it can be sent via cell broadcast, satellite system message broadcast, broadcast channel, ground station, dedicated signaling, etc.
- random access configuration information can be sent via system messages.
- the UE within the receiving range can receive the random access configuration information and use it to determine the RO resource for initiating random access, and then initiate random access based on the RO resource.
- the random access configuration information may also include at least one of the following: frequency domain reuse degree, hopping beam pattern, random access mask index, subframe-level random access configuration information, and other control parameters.
- the PRACH configuration corresponding to the PRACH configuration index indicates which resource blocks are configured as random access channels in each subframe, helping the UE determine in which time slot random access can be performed.
- Frequency domain reuse degree indicates how many parts the frequency domain resources allocated to a random access channel are divided into, and this parameter can affect the frequency domain resource allocation of the random access channel.
- Beam skipping patterns can describe the hopping patterns of each beam in a satellite communication system.
- the random access mask index is used by the UE to select appropriate resources for random access from the resource blocks indicated by the PRACH configuration index, based on a specific random access mask.
- Each random access mask index is associated with a set of available random access resources.
- Subframe-level random access configuration information includes the number of RO resources in each subframe as indicated by the PRACH configuration index, and their temporal distribution. This information tells the device the temporal random access resource arrangement within each subframe.
- control parameters may include other related control parameters such as time slot configuration, transmission parameters, and power control, which affect the specific method and timing by which the device initiates a random access request.
- the available RO resources can be determined directly based on the PRACH configuration index.
- the random access configuration information may also include frequency domain reuse.
- the UE can use the beam hopping pattern and the number of ROs in the time domain of each subframe indicated by the PRACH configuration index to determine which RO resources are available, and sort the available RO resources into multiple frequencies based on the frequency domain reuse.
- this is a second schematic diagram illustrating the mapping relationship between RO resources and wave positions provided in this embodiment of the present disclosure.
- the horizontal axis represents time
- the vertical axis represents frequency.
- the RO resources corresponding to each wave position are distributed according to time and frequency.
- the RO resources on frequency 1 may include RO1, RO3, RO5, RO7, RO9, and RO11
- the RO resources on frequency 2 may include RO2, RO4, RO6, RO8, RO10, and RO12.
- the time slot corresponding to RO1 is closest to the start time of the wave position dwell time, and RO1 to RO12 are arranged according to their timing sequence.
- random access procedures can include contention-based random access and non-contention-based random access.
- contention-based random access multiple devices may simultaneously attempt to access the same random access resources.
- the base station needs to use collision detection mechanisms (such as random access collision detection) to handle situations where multiple devices request access simultaneously.
- network devices can pre-allocate predetermined resources to a specific UE for its use.
- the network device can carry a random access mask index in the random access configuration information to help it select appropriate resources on the random access channel (PRACH) to send a preamble request (such as a preamble), thereby requesting the network to allocate resources to establish a connection.
- PRACH random access channel
- the PRACH Mask Index which can be a number or an identifier, determines which resource block (RO resource) in the PRACH configuration index the device sends a random access request on. Using the PRACH Mask Index, the UE can select an available RO resource within the PRACH cycle based on the random access resource rules configured on the network side. This avoids conflicts and improves access efficiency.
- the random access configuration information may also include a first random access mask index.
- the network device can determine a first dedicated RO resource for the user equipment (UE) that satisfies the target characteristic combination in each RO resource corresponding to the PRACH configuration index, and determine the first random access mask index corresponding to the first dedicated RP resource.
- UE user equipment
- the first random access mask index is used for the UE that satisfies the target characteristic combination to determine the first dedicated RO resource from each RO resource corresponding to the PRACH configuration index.
- the aforementioned target feature combination can refer to a feature combination, which means combining multiple different features or functions in a technology or product design to meet specific needs or achieve specific goals.
- feature combination can refer to the integration or collaborative work of multiple communication technologies to provide a better user experience or more efficient communication services. For example, combining multi-carrier communication with adaptive modulation can optimize data transmission rate and reliability under different conditions.
- a connected UE may need to re-access the network via random access. For example, when a connected UE moves to a new cell, it needs to re-access the new cell to maintain the communication connection. In this case, the UE will perform a random access procedure to obtain control channel resources in the new cell, ensuring continuous communication service. If the network reallocates or reconfigures spatiotemporal resources, it may affect the service of connected UEs. In this case, the UE may need to re-access the network via random access to adapt to the new resource allocation.
- the network device can also allocate dedicated RO resources to the UE so that the UE can quickly reconnect to the network device. Therefore, a second random access mask index can be sent to the UE in the connected state through dedicated signaling to improve efficiency.
- the UE and network equipment can identify specific RO resources by mapping between the random access mask index and the RO index.
- the mapping relationship between the random access mask index and the RO index may include:
- the random access mask index is equal to the value of the RO index modulo operation plus 1, and the modulo value is equal to the preset maximum number.
- the random access mask index can be determined by the following formula: it is equal to the value of the RO index modulo operation plus 1.
- PRACH Mask Index is the random access mask index
- RO_index is the RO index
- the RO resources corresponding to the random access mask index may include RO2 and RO10.
- the mapping relationship between the random access mask index and the RO index may include:
- the RO index can include 9 to 12; when the random access mask index is 12, the RO index can include 13 to 16.
- the random access mask index when the random access mask index is less than or equal to 8, the random access mask index equals the RO index; when the random access mask index equals 9, it represents all RO resources with even-numbered indices; and when the random access mask index equals 10, it represents all RO resources with odd-numbered indices. Therefore, random access mask indices greater than 10 can be mapped to RO indices after 8, and one random access mask index can be mapped to multiple RO indices.
- the dedicated RO resource is allocated for the UE of Feature Combination, it can be configured through the ssb-SharedRO-MaskIndex parameter.
- Table 2 illustrates the mapping relationship between the random access mask index and the RO index in a terrestrial communication system before applying the embodiments of this disclosure.
- the random access mask index can be represented as PRACH Mask Index or msgA-SSB-SharedRO-MaskIndex, and the RO resources available to the SSB can be represented as Allowed PRACH occasion(s)of SSB.
- the corresponding available RO resource index is all RO indices; when the random access mask index is 1, the corresponding available RO resource index (PRACH occasion index) is 1, and so on.
- the corresponding available RO resource index is 8; when the random access mask index is 9, the corresponding available RO resource is each RO resource with an even index; when the random access mask index is 10, the corresponding available RO resource is each RO resource with an odd index; when the random access mask index is 11 to 15, the corresponding RO resource is empty and is in a reserved state awaiting mapping.
- the RO index when the random access mask index is equal to 11, the RO index may include 9 to 12; when the random access mask index is equal to 12, the RO index may include 13 to 16.
- the embodiments of this disclosure can support mapping the random access mask index to more RO resources, and can use reserved bits such as 13, 14, and 15 of the random access mask index to map to other RO resources, such as PRACH occasion index 17-19, PRACH occasion index 20-12, PRACH occasion index 23-25, etc.
- the above-described embodiments of this disclosure describe a method for random access when one SSB corresponds to one radian position.
- the available RO resources can be determined by combining the SSB index obtained when receiving the SSB. That is, the UE can determine the SSB corresponding to the SSB index among all RO resources of the current radian position based on the SSB index.
- the UE can determine RO7 to RO12 as the available RO resources corresponding to SSB2 based on the SSB index.
- the number of mapped RO resources can be increased, thereby expanding the resource pool, giving devices more choices, reducing the possibility of conflicts, lowering the probability of PRACH collisions, and thus improving the access success rate, reducing communication latency and network load, and improving the overall efficiency and performance of the system.
- the UE can determine whether to use the first dedicated RO resource corresponding to the first random access mask index based on whether it has the target characteristic combination corresponding to the first random access mask index.
- the UE can determine the first dedicated RO resource based on the first random access mask index and initiate access based on the first dedicated RO resource; if the UE does not have a target feature combination, the UE can determine the target RO resource that is currently available, excluding the first RO resource, from each RO resource corresponding to the PRACH configuration index based on the first random access mask index and initiate random access based on the target RO resource.
- the executing entity of this method can be a user equipment (UE), and the method includes:
- the random access configuration information includes the physical random access channel (PRACH) configuration index; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource during the dwell time of each wavelength.
- PRACH physical random access channel
- each RO resource is indexed and sorted according to the time it falls within the dwell time of each wave position.
- the UE has a combination of target characteristics
- the random access configuration information also includes a first random access mask index; the first random access mask index is used to allocate UEs with target characteristic combinations; there is a mapping relationship between each random access mask index and the RO index;
- the random access opportunity (RO) resources are determined, including:
- the first dedicated RO resource is determined from each RO resource corresponding to the PRACH configuration index
- Initiating random access based on RO resources includes:
- the UE does not have a target feature combination
- the random access configuration information also includes a first random access mask index; the first random access mask index is used to allocate UEs with target characteristic combinations; there is a mapping relationship between each random access mask index and the RO index;
- the random access opportunity (RO) resources are determined, including:
- Initiating random access based on RO resources includes:
- the method further includes:
- the random access opportunity (RO) resources are determined, including:
- the second dedicated RO resource for the UE is determined from each RO resource corresponding to the PRACH configuration index;
- Initiating random access based on RO resources includes:
- the mapping relationship between each random access mask index and the RO index includes:
- the random access mask index is equal to the value of the RO index modulo operation plus 1, and the modulo value is equal to the preset maximum number.
- the mapping relationship between each random access mask index and the RO index includes:
- the RO index includes 9 to 12; when the random access mask index is 12, the RO index includes 13 to 16.
- the random access configuration information also includes frequency domain reuse degree and hopping beam pattern; the hopping beam pattern is used to indicate the dwell time of each beam position;
- the random access opportunity (RO) resources are determined, including:
- the RO resources are determined based on the number of ROs in the time domain, the frequency domain reuse, and the hopping beam pattern of each subframe indicated by the PRACH configuration index.
- receiving random access configuration information sent by a network device includes:
- receiving a second random access mask index sent by a network device in a connected state includes:
- this disclosure also provides a random access device.
- a schematic diagram of a random access device provided in this disclosure is shown. This device can be deployed in a network device and may include:
- the memory 710 is used to store computer programs; the transceiver 720 is used to receive and send data under the control of the processor 730.
- the processor 730 and the memory 710 can also be physically separated.
- the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 730 and memory represented by memory 710.
- the bus architecture may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein.
- the bus interface provides an interface.
- the transceiver 720 may be multiple elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc.
- Processor 730 is responsible for managing the bus architecture and general processing, and memory 710 may store data used by processor 730 during operation.
- the processor 730 can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD).
- CPU central processing unit
- ASIC application-specific integrated circuit
- FPGA field-programmable gate array
- CPLD complex programmable logic device
- the processor can also adopt a multi-core architecture.
- the processor 730 executes any of the methods described in the embodiments of this disclosure according to the obtained executable instructions by calling the computer program stored in the memory 710, for example:
- the physical random access channel (PRACH) configuration index is determined; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource during the dwell time of each beam position.
- PRACH physical random access channel
- the random access configuration information includes the PRACH configuration index.
- each RO resource is indexed and sorted according to the time it falls within the dwell time of each wave position.
- the processor 710 is also configured to perform:
- the random access configuration information also includes the first random access mask index
- a first dedicated RO resource is determined for the user equipment (UE) to meet the target characteristic combination, and a first random access mask index corresponding to the first dedicated RO resource is determined.
- the first random access mask index is used for the UE that satisfies the target characteristic combination to determine the first dedicated RO resource from each RO resource corresponding to the PRACH configuration index.
- the processor 710 is also configured to perform:
- a second dedicated RO resource is determined for the connected-mode user equipment (UE), and a second random access mask index corresponding to the second dedicated RO resource is determined; wherein, there is a mapping relationship between each random access mask index and the RO index; the second random access mask index is used to determine the second dedicated RO resource from each RO resource;
- the mapping relationship between each random access mask index and the RO index includes:
- the random access mask index is equal to the value of the RO index modulo operation plus 1, and the modulo value is equal to the preset maximum number.
- the mapping relationship between each random access mask index and the RO index includes:
- the RO index includes 9 to 12; when the random access mask index is 12, the RO index includes 13 to 16.
- the random access configuration information also includes frequency domain reuse degree and hopping beam pattern; the hopping beam pattern is used to indicate the dwell time of each beam position;
- Frequency domain reuse, beam hopping pattern, and the number of ROs in the time domain for each subframe indicated by the PRACH configuration index are used to determine the RO resources for initiating random access.
- sending random access configuration information includes:
- Random access configuration information is sent via system messages.
- sending a second random access mask index to a connected UE includes:
- the second random access mask index is sent to the connected UE via dedicated signaling.
- This disclosure also provides another random access device.
- Figure 8 is a schematic diagram of another random access device provided in this disclosure, this device can be deployed on a user equipment and may include:
- the memory 810 is used to store computer programs; the transceiver 820 is used to receive and send data under the control of the processor 830.
- the processor 830 and the memory 810 can also be physically separated.
- the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 830 and memory represented by memory 810.
- the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein.
- the bus interface provides an interface.
- the transceiver 820 can be multiple elements, including transmitters and receivers, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical fibers, etc.
- Processor 830 is responsible for managing the bus architecture and general processing, and memory 810 can store data used by processor 830 during operation.
- the processor 830 can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD).
- CPU central processing unit
- ASIC application-specific integrated circuit
- FPGA field-programmable gate array
- CPLD complex programmable logic device
- the processor can also adopt a multi-core architecture.
- the processor 830 executes any of the methods provided in the embodiments of this disclosure according to the obtained executable instructions by calling the computer program stored in the memory 810, for example:
- the random access configuration information includes the physical random access channel (PRACH) configuration index; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource during the dwell time of each wavelength;
- PRACH physical random access channel
- each RO resource is indexed and sorted according to the time it falls within the dwell time of each wave position.
- the UE has a combination of target characteristics
- the random access configuration information also includes a first random access mask index; the first random access mask index is used to allocate UEs with target characteristic combinations; there is a mapping relationship between each random access mask index and the RO index;
- the random access opportunity (RO) resources are determined, including:
- the first dedicated RO resource is determined from each RO resource corresponding to the PRACH configuration index
- Initiating random access based on RO resources includes:
- the UE does not have a target feature combination
- the random access configuration information also includes a first random access mask index; the first random access mask index is used to allocate UEs with target characteristic combinations; there is a mapping relationship between each random access mask index and the RO index;
- the random access opportunity (RO) resources are determined, including:
- Initiating random access based on RO resources includes:
- the processor 610 is further configured to perform:
- the random access opportunity (RO) resources are determined, including:
- the second dedicated RO resource for the UE is determined from each RO resource corresponding to the PRACH configuration index;
- Initiating random access based on RO resources includes:
- the mapping relationship between each random access mask index and the RO index includes:
- the random access mask index is equal to the value of the RO index modulo operation plus 1, and the modulo value is equal to the preset maximum number.
- the mapping relationship between each random access mask index and the RO index includes:
- the RO index includes 9 to 12; when the random access mask index is 12, the RO index includes 13 to 16.
- the random access configuration information also includes frequency domain reuse degree and hopping beam pattern; the hopping beam pattern is used to indicate the dwell time of each beam position;
- the random access opportunity (RO) resources are determined, including:
- the RO resources are determined based on the number of ROs in the time domain, the frequency domain reuse, and the hopping beam pattern of each subframe indicated by the PRACH configuration index.
- receiving random access configuration information sent by a network device includes:
- receiving a second random access mask index sent by a network device in a connected state includes:
- this is a schematic diagram of a random access device provided in an embodiment of this disclosure.
- This device can be applied to network equipment and includes:
- Acquisition unit 910 is used to acquire beam hopping information
- the first determining unit 920 is used to determine the physical random access channel (PRACH) configuration index based on beam hopping information; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource during the dwell time of each beam position.
- PRACH physical random access channel
- the transmitting unit 930 is used to transmit random access configuration information, which includes a PRACH configuration index.
- each RO resource is indexed and sorted according to the time it falls within the dwell time of each wave position.
- the first determining unit 920 is further configured to:
- the random access configuration information also includes the first random access mask index
- a first dedicated RO resource is determined for the user equipment (UE) to meet the target characteristic combination, and a first random access mask index corresponding to the first dedicated RO resource is determined.
- the first random access mask index is used for the UE that satisfies the target characteristic combination to determine the first dedicated RO resource from each RO resource corresponding to the PRACH configuration index.
- the first determining unit 920 is further configured to:
- a second dedicated RO resource is determined for the connected-mode user equipment (UE), and a second random access mask index corresponding to the second dedicated RO resource is determined; wherein, there is a mapping relationship between each random access mask index and the RO index; the second random access mask index is used to determine the second dedicated RO resource from each RO resource;
- the transmitting unit 930 is also used for:
- the mapping relationship between each random access mask index and the RO index includes:
- the random access mask index is equal to the value of the RO index modulo operation plus 1, and the modulo value is equal to the preset maximum number.
- the mapping relationship between each random access mask index and the RO index includes:
- the RO index includes 9 to 12; when the random access mask index is 12, the RO index includes 13 to 16.
- the random access configuration information also includes frequency domain reuse degree and hopping beam pattern; the hopping beam pattern is used to indicate the dwell time of each beam position;
- Frequency domain reuse, beam hopping pattern, and the number of ROs in the time domain for each subframe indicated by the PRACH configuration index are used to determine the RO resources for initiating random access.
- the sending unit 930 is used for:
- Random access configuration information is sent via system messages.
- the sending unit 930 is used for:
- the second random access mask index is sent to the connected UE via dedicated signaling.
- this is a schematic diagram of another random access device provided in an embodiment of this disclosure.
- This device can be applied to user equipment and includes:
- the receiving unit 1010 is used to receive random access configuration information sent by the network device; the random access configuration information includes a physical random access channel (PRACH) configuration index; the PRACH configuration index indicates that there is at least one random access opportunity (RO) resource during the dwell time of each wavelength.
- PRACH physical random access channel
- the second determining unit 1020 is used to determine random access opportunity (RO) resources based on random access configuration information
- Access unit 1030 is used to initiate random access based on RO resources.
- each RO resource is indexed and sorted according to the time it falls within the dwell time of each wave position.
- the UE has a combination of target characteristics
- the random access configuration information also includes a first random access mask index; the first random access mask index is used to allocate UEs with target characteristic combinations; there is a mapping relationship between each random access mask index and the RO index;
- the second determining unit 1020 is used for:
- the first dedicated RO resource is determined from each RO resource corresponding to the PRACH configuration index
- Access unit 1030 is used for:
- the UE does not have a target feature combination
- the random access configuration information also includes a first random access mask index; the first random access mask index is used to allocate UEs with target characteristic combinations; there is a mapping relationship between each random access mask index and the RO index;
- the second determining unit 1020 is used for:
- Access unit 1030 is used for:
- the receiving unit 1010 is further configured to:
- the second determining unit 1020 is used for:
- the second dedicated RO resource for the UE is determined from each RO resource corresponding to the PRACH configuration index;
- the access unit 1030 is also used for:
- the mapping relationship between each random access mask index and the RO index includes:
- the random access mask index is equal to the value of the RO index modulo operation plus 1, and the modulo value is equal to the preset maximum number.
- the mapping relationship between each random access mask index and the RO index includes:
- the RO index includes 9 to 12; when the random access mask index is 12, the RO index includes 13 to 16.
- the random access configuration information also includes frequency domain reuse degree and hopping beam pattern; the hopping beam pattern is used to indicate the dwell time of each beam position;
- the random access opportunity (RO) resources are determined, including:
- the RO resources are determined based on the number of ROs in the time domain, the frequency domain reuse, and the hopping beam pattern of each subframe indicated by the PRACH configuration index.
- the receiving unit 1010 is configured to:
- the receiving unit 1010 is configured to:
- the division of units in the embodiments of this disclosure is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used.
- the functional units in the various embodiments of this disclosure can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.
- the integrated units described above can be implemented in hardware or as software functional units.
- the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium.
- This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this disclosure.
- the aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.
- embodiments of this disclosure also provide a processor-readable storage medium storing a computer program for causing a computer to execute the random access methods provided in the above embodiments.
- the processor-readable storage medium can be any available medium or data storage device that a computer can access, including but not limited to magnetic storage (e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MOs), etc.), optical storage (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND flash), solid-state drives (SSDs)).
- magnetic storage e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MOs), etc.
- optical storage e.g., CDs, DVDs, BDs, HVDs, etc.
- semiconductor storage e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND flash), solid-state drives (SSDs)
- This disclosure also provides a computer program product that, when invoked by a computer, causes the computer to execute the steps of the random access method described above.
- this disclosure can be provided as methods, systems, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.
- processor-executable instructions may also be stored in a processor-readable memory that can instruct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and/or one or more block diagrams.
- processor-executable instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and/or one or more block diagrams.
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Abstract
本公开提供了一种随机接入方法、设备、装置及存储介质,涉及通信技术领域。其中,该方法包括:获取波束跳变信息;基于所述波束跳变信息,确定物理随机接入信道PRACH配置索引;所述PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源;发送随机接入配置信息;所述随机接入配置信息中包括所述PRACH配置索引。本公开可以提高随机接入的成功率和效率。
Description
本公开要求在2024年06月25日提交中国专利局、申请号为202410830423X、名称为“一种随机接入方法、设备、装置及存储介质”的中国专利的优先权,其全部内容通过引用结合在本公开中。
本公开涉及通信技术领域,具体而言,涉及一种随机接入方法、设备、装置及存储介质。
在地面通信系统中,小区通常采用固定覆盖方式,随机接入机会(Random Access Occasion,RO)资源在一个物理随机接入信道(Physical Random Access Channel,PRACH)周期内进行映射,并按顺序依次分配每个同步信号块(Synchronization Signal Block,SSB)对应的RO资源,也即相邻SSB映射的RO资源的时域位置相邻。这种映射方式在地面通信系统中较为有效,因为小区的覆盖范围和信号传播路径相对稳定。
然而,在卫星通信系统中,特别是在跳波束(Beam Hopping)场景下,情况有所不同。卫星通信系统中,波束会进行跳变扫描,以覆盖更广的区域或提高特定区域的服务质量。在这种跳波束场景下,如果仍然按照地面通信系统中的RO映射方法来配置,可能会出现在覆盖用户设备(User Equipment,UE)的波位下,该波位对应的SSB映射的RO资源不在该波位的驻留时间内,导致用户设备无法使用该RO资源发起随机接入,浪费了RO资源,也影响了接入效率。
本公开实施例至少提供一种随机接入方法、设备、装置及存储介质,用以解决在卫星通信系统中RO资源不在波位驻停时间导致的效率问题。
第一方面,本公开实施例提供了一种随机接入方法,应用于网络设备,该方法包括:
获取波束跳变信息;
基于波束跳变信息,确定物理随机接入信道PRACH配置索引;PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源;
发送随机接入配置信息;随机接入配置信息中包括PRACH配置索引。
在一些实施例中,各RO资源按照落入每个波位驻留时间内的时间进行索引排序。
在一些实施例中,该方法还包括:
随机接入配置信息中还包括第一随机接入掩码索引;
在PRACH配置索引对应的各RO资源中,为满足目标特性组合的用户设备UE确定第一专用RO资源,并确定第一专用RO资源对应的第一随机接入掩码索引;
其中,各随机接入掩码索引与RO索引之间存在映射关系;第一随机接入掩码索引用于满足目标特性组合的UE从PRACH配置索引对应的各RO资源中确定第一专用RO资源。
在一些实施例中,该方法还包括:
在PRACH配置索引对应的各RO资源中,为连接态用户设备UE确定第二专用RO资源,并确定第二专用RO资源对应的第二随机接入掩码索引;其中,各随机接入掩码索引与RO索引之间存在映射关系;第二随机接入掩码索引用于从各RO资源中确定第二专用RO资源;
向连接态UE发送第二随机接入掩码索引。
在一些实施例中,在每个波位的RO资源数量大于预设最大数量的情况下,各随机接入掩码索引与RO索引之间的映射关系包括:
随机接入掩码索引等于对RO索引进行取模运算后加1的取值,取模运算的模值等于预设最大数量。
在一些实施例中,在每个波位的RO资源数量大于预设最大数量的情况下,各随机接入掩码索引与RO索引之间的映射关系包括:
在随机接入掩码索引等于11的情况下,RO索引包括9到12;在随机接入掩码索引等于12的情况下,RO索引包括13到16。
在一些实施例中,随机接入配置信息中还包括频域复用度和跳波束图样;跳波束图样用于指示每个波位的驻留时间;
频域复用度、跳波束图样、以及PRACH配置索引指示的每个子帧在时域上的RO数量,用于确定发起随机接入的RO资源。
在一些实施例中,发送随机接入配置信息,包括:
通过系统消息发送随机接入配置信息。
在一些实施例中,向连接态UE发送第二随机接入掩码索引,包括:
通过专用信令向连接态UE发送第二随机接入掩码索引。
第二方面,本公开实施例提供了另一种随机接入方法,应用于用户设备UE,该方法包括:
接收网络设备发送的随机接入配置信息;随机接入配置信息中包括物理随机接入信道PRACH配置索引;PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源;
基于随机接入配置信息,确定随机接入机会RO资源;
基于RO资源发起随机接入。
在一些实施例中,各RO资源按照落入每个波位驻留时间内的时间进行索引排序。
在一些实施例中,UE具有目标特性组合;
随机接入配置信息中还包括第一随机接入掩码索引;第一随机接入掩码索引用于分配给具有目标特性组合的UE;各随机接入掩码索引与RO索引之间存在映射关系;
基于随机接入配置信息,确定随机接入机会RO资源,包括:
基于第一随机接入掩码索引,从PRACH配置索引对应的各RO资源中确定第一专用RO资源;
基于RO资源发起随机接入,包括:
基于第一专用RO资源发起随机接入。
在一些实施例中,UE不具有目标特性组合;
随机接入配置信息中还包括第一随机接入掩码索引;第一随机接入掩码索引用于分配给具有目标特性组合的UE;各随机接入掩码索引与RO索引之间存在映射关系;
基于随机接入配置信息,确定随机接入机会RO资源,包括:
基于第一随机接入掩码索引,从PRACH配置索引对应的各RO资源中确定除第一专用RO资源外的当前能够使用的目标RO资源;
基于RO资源发起随机接入,包括:
基于目标RO资源发起随机接入。
在一些实施例中,该方法还包括:
在连接态下接收网络设备发送的第二随机接入掩码索引;各随机接入掩码索引与RO索引之间存在映射关系;
基于随机接入配置信息,确定随机接入机会RO资源,包括:
基于第二随机接入掩码索引,从PRACH配置索引对应的各RO资源中确定UE专用的第二专用RO资源;
基于RO资源发起随机接入,包括:
基于第二专用RO资源发起随机接入。
在一些实施例中,在每个波位的RO资源数量大于预设最大数量的情况下,各随机接入掩码索引与RO索引之间的映射关系包括:
随机接入掩码索引等于对RO索引进行取模运算后加1的取值,取模运算的模值等于预设最大数量。
在一些实施例中,在每个波位的RO资源数量大于预设最大数量的情况下,各随机接入掩码索引与RO索引之间的映射关系包括:
在随机接入掩码索引等于11的情况下,RO索引包括9到12;在随机接入掩码索引等于12的情况下,RO索引包括13到16。
在一些实施例中,随机接入配置信息中还包括频域复用度和跳波束图样;跳波束图样用于指示每个波位的驻留时间;
基于随机接入配置信息,确定随机接入机会RO资源,包括:
基于PRACH配置索引指示的每个子帧在时域上的RO数量、频域复用度、以及跳波束图样,确定RO资源。
在一些实施例中,接收网络设备发送的随机接入配置信息,包括:
接收网络设备通过系统消息发送的PRACH配置索引。
在一些实施例中,在连接态下接收网络设备发送的第二随机接入掩码索引,包括:
在连接态下接收网络设备通过专用信令发送的第二随机接入掩码索引。
第三方面,本公开实施例提供了一种随机接入设备,包括存储器,收发机,处理器;
存储器,用于存储计算机程序;收发机,用于在处理器的控制下收发数据;处理器,用于读取存储器中的计算机程序并执行以下操作:
获取波束跳变信息;
基于波束跳变信息,确定物理随机接入信道PRACH配置索引;PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源;
发送随机接入配置信息;随机接入配置信息中包括PRACH配置索引。
在一些实施例中,各RO资源按照落入每个波位驻留时间内的时间进行索引排序。
在一些实施例中,随机接入配置信息中还包括第一随机接入掩码索引;
处理器还用于执行:
在PRACH配置索引对应的各RO资源中,为满足目标特性组合的用户设备UE确定第一专用RO资源,并确定第一专用RO资源对应的第一随机接入掩码索引;
其中,各随机接入掩码索引与RO索引之间存在映射关系;第一随机接入掩码索引用于满足目标特性组合的UE从PRACH配置索引对应的各RO资源中确定第一专用RO资源。
在一些实施例中,处理器还用于执行:
在PRACH配置索引对应的各RO资源中,为连接态用户设备UE确定第二专用RO资源,并确定第二专用RO资源对应的第二随机接入掩码索引;其中,各随机接入掩码索引与RO索引之间存在映射关系;第二随机接入掩码索引用于从各RO资源中确定第二专用RO资源;
向连接态UE发送第二随机接入掩码索引。
在一些实施例中,在每个波位的RO资源数量大于预设最大数量的情况下,各随机接入掩码索引与RO索引之间的映射关系包括:
随机接入掩码索引等于对RO索引进行取模运算后加1的取值,取模运算的模值等于预设最大数量。
在一些实施例中,在每个波位的RO资源数量大于预设最大数量的情况下,各随机接入掩码索引与RO索引之间的映射关系包括:
在随机接入掩码索引等于11的情况下,RO索引包括9到12;在随机接入掩码索引等于12的情况下,RO索引包括13到16。
在一些实施例中,随机接入配置信息中还包括频域复用度和跳波束图样;跳波束图样用于指示每个波位的驻留时间;
频域复用度、跳波束图样、以及PRACH配置索引指示的每个子帧在时域上的RO数量,用于确定发起随机接入的RO资源。
在一些实施例中,发送随机接入配置信息,包括:
通过系统消息发送随机接入配置信息。
在一些实施例中,向连接态UE发送第二随机接入掩码索引,包括:
通过专用信令向连接态UE发送第二随机接入掩码索引。
第四方面,本公开实施例还提供另一种随机接入设备,用于用户设备UE,包括存储器,收发机,处理器;
存储器,用于存储计算机程序;收发机,用于在处理器的控制下收发数据;处理器,用于读取存储器中的计算机程序并执行以下操作:
接收网络设备发送的随机接入配置信息;随机接入配置信息中包括物理随机接入信道PRACH配置索引;PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源;
基于随机接入配置信息,确定随机接入机会RO资源;
基于RO资源发起随机接入。
在一些实施例中,各RO资源按照落入每个波位驻留时间内的时间进行索引排序。
在一些实施例中,UE具有目标特性组合;
随机接入配置信息中还包括第一随机接入掩码索引;第一随机接入掩码索引用于分配给具有目标特性组合的UE;各随机接入掩码索引与RO索引之间存在映射关系;
基于随机接入配置信息,确定随机接入机会RO资源,包括:
基于第一随机接入掩码索引,从PRACH配置索引对应的各RO资源中确定第一专用RO资源;
基于RO资源发起随机接入,包括:
基于第一专用RO资源发起随机接入。
在一些实施例中,UE不具有目标特性组合;
随机接入配置信息中还包括第一随机接入掩码索引;第一随机接入掩码索引用于分配给具有目标特性组合的UE;各随机接入掩码索引与RO索引之间存在映射关系;
基于随机接入配置信息,确定随机接入机会RO资源,包括:
基于第一随机接入掩码索引,从PRACH配置索引对应的各RO资源中确定除第一专用RO资源外的当前能够使用的目标RO资源;
基于RO资源发起随机接入,包括:
基于目标RO资源发起随机接入。
在一些实施例中,处理器还用于执行:
在连接态下接收网络设备发送的第二随机接入掩码索引;各随机接入掩码索引与RO索引之间存在映射关系;
基于随机接入配置信息,确定随机接入机会RO资源,包括:
基于第二随机接入掩码索引,从PRACH配置索引对应的各RO资源中确定UE专用的第二专用RO资源;
基于RO资源发起随机接入,包括:
基于第二专用RO资源发起随机接入。
在一些实施例中,在每个波位的RO资源数量大于预设最大数量的情况下,各随机接入掩码索引与RO索引之间的映射关系包括:
随机接入掩码索引等于对RO索引进行取模运算后加1的取值,取模运算的模值等于预设最大数量。
在一些实施例中,在每个波位的RO资源数量大于预设最大数量的情况下,各随机接入掩码索引与RO索引之间的映射关系包括:
在随机接入掩码索引等于11的情况下,RO索引包括9到12;在随机接入掩码索引等于12的情况下,RO索引包括13到16。
在一些实施例中,随机接入配置信息中还包括频域复用度和跳波束图样;跳波束图样用于指示每个波位的驻留时间;
基于随机接入配置信息,确定随机接入机会RO资源,包括:
基于PRACH配置索引指示的每个子帧在时域上的RO数量、频域复用度、以及跳波束图样,确定RO资源。
在一些实施例中,接收网络设备发送的随机接入配置信息,包括:
接收网络设备通过系统消息发送的PRACH配置索引。
在一些实施例中,在连接态下接收网络设备发送的第二随机接入掩码索引,包括:
在连接态下接收网络设备通过专用信令发送的第二随机接入掩码索引。
第五方面,本公开实施例还提供一种随机接入装置,包括:
获取单元,用于获取波束跳变信息;
第一确定单元,用于基于波束跳变信息,确定物理随机接入信道PRACH配置索引;PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源;
发送单元,用于发送随机接入配置信息;随机接入配置信息中包括PRACH配置索引。
第六方面,本公开实施例还提供另一种随机接入装置,包括:
接收单元,用于接收网络设备发送的随机接入配置信息;随机接入配置信息中包括物理随机接入信道PRACH配置索引;PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源;
第二确定单元,用于基于随机接入配置信息,确定随机接入机会RO资源;
接入单元,用于基于RO资源发起随机接入。
第七方面,本公开实施例还提供一种处理器可读存储介质,处理器可读存储介质存储有计算机程序,计算机程序用于使处理器执行如上第一方面的随机接入方法的步骤,或执行如上第二方面的随机接入方法的步骤。
本公开提供的一种随机接入方法、设备、装置及存储介质,通过获取波束跳变信息,基于波束跳变信息确定PRACH配置索引,PRACH配置索引对应的PRACH配置在每个波位的驻留时间内确保至少有一个RO资源可用,从而使用户设备UE根据PRACH配置索引确定发起随机接入的RO资源时,能够在当前所处波位找到可用的RO资源发起随机接入,提高接入的成功率和效率,确保了接入稳定性和可靠性。
为使本公开的上述目的、特征和优点能更明显易懂,下文特举较佳实施例,并配合所附附图,作详细说明如下。
为了更清楚地说明本公开实施例的技术方案,下面将对实施例中所需要使用的附图作简单地介绍,此处的附图被并入说明书中并构成本说明书中的一部分,这些附图示出了符合本公开的实施例,并与说明书一起用于说明本公开的技术方案。应当理解,以下附图仅示出了本公开的某些实施例,因此不应被看作是对范围的限定,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他相关的附图。
图1示出了本公开实施例所涉及的一种卫星通信系统的示意图;
图2示出了本公开实施例所提供的地面通信系统中SSB和RO的映射关系的示意图;
图3示出了本公开实施例提供的一种随机接入方法的流程图;
图4示出了本公开实施例所提供的RO资源与波位之间映射关系的示意图之一;
图5示出了本公开实施例所提供的RO资源与波位之间映射关系的示意图之二;
图6示出了本公开实施例提供的另一种随机接入方法的示意图;
图7示出了本公开实施例所提供的一种随机接入设备的示意图;
图8示出了本公开实施例所提供的另一种随机接入设备的示意图;
图9示出了本公开实施例提供的一种随机接入装置的示意图;
图10示出了本公开实施例提供的另一种随机接入装置的示意图。
为使本公开实施例的目的、技术方案和优点更加清楚,下面将结合本公开实施例中附图,对本公开实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本公开一部分实施例,而不是全部的实施例。通常在此处附图中描述和示出的本公开实施例的组件可以以各种不同的配置来布置和设计。因此,以下对在附图中提供的本公开的实施例的详细描述并非旨在限制要求保护的本公开的范围,而是仅仅表示本公开的选定实施例。基于本公开的实施例,本领域技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例,都属于本公开保护的范围。
应注意到:相似的标号和字母在下面的附图中表示类似项,因此,一旦某一项在一个附图中被定义,则在随后的附图中不需要对其进行进一步定义和解释。
本公开实施例中术语“多个”是指两个或两个以上,其它量词与之类似。本公开实施例中术语“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。另外,本文中术语“至少一种”表示多种中的任意一种或多种中的至少两种的任意组合,例如,包括A、B、C中的至少一种,可以表示包括从A、B和C构成的集合中选择的任意一个或多个元素。
本公开实施例中的说明书和权利要求书及上述附图中的术语“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性,而只是用来区分不同的特征。应该理解这样使用的特征在适当情况下可以互换,以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。
首先,对本公开实施例的应用场景进行介绍。本公开实施例可以应用于非地面通信系统(如卫星通信系统)中,参见图1所示,为本公开实施例所涉及的一种卫星通信系统的示意图。该卫星通信系统包括UE、网络设备,其中,网络设备可以包括卫星节点(为了便于说明,图中只示出了一个卫星,例如可为非静止轨道卫星),还可以包括核心网设备,UE可与卫星节点进行无线通信,卫星节点可与核心网设备进行无线通信,其中:
卫星节点可以包括基站,可包括用于对信息进行中继的轨道接收机或中继器,卫星节点可与核心网设备进行通信交互,向UE提供通信服务。本公开实施例中,与UE之间进行交互的网络设备可以指基站。
UE可以包括智能手机、蜂窝电话、智能手表、智能平板、个人数字助理电脑、膝上型电脑、服务器、网关(Gateway,GW)、控制器、无线调制解调器、传感器、可移动性装置(如自行车/汽车/载具)等等。
经研究发现,在地面通信系统中,小区覆盖是固定的,物理随机接入信道(PRACH)资源在一个PRACH周期内映射后,按照参数ssb-perRACH-Occasion的映射关系配置,从而按顺序分配每个同步信号块(SSB)对应的随机接入机会(RO)资源。一个小区内的RO总资源在一个PRACH周期内进行排列,一个SSB索引最多映射到8个RO资源上。这种方法确保了每个SSB都能与适当的RO资源关联,以便用户设备(UE)能够在地面通信系统中顺利接入网络。
对于基于竞争的随机接入过程(Contention-Based Random Access,CBRA),SSB索引映射到RO的顺序可以如下所示:第一,在一个RO内按照前导码preamble索引的升序排列;第二,多个频分复用的RO按照频率资源索引的升序排列;第三,一个PRACH时隙内的时分复用的RO按照时间资源索引的递增顺序排列;第四,按照PRACH时隙的索引的升序排列。一轮SSB到RO的映射完成之后,一个SSB周期内实际发送的SSB都映射到RO一次。
参见图2所示,图2为本公开实施例所提供的地面通信系统中SSB和RO的映射关系的示意图。图2中横轴代表时间,纵轴代表频率,每个SSB对应的RO资源按照时间和频率进行分布。图2描述了地面系统中,在频域复用信息Msg1-FDM=4,每个RO资源映射到的SSB数量ssb-perRACH-Occasion=1/8时,不同SSB(SSB1到SSB4)与RO资源(RO1到RO8)之间的映射关系。在地面系统中,这些映射关系是固定的,每个SSB都有对应的RO资源按顺序分布。
然而,在卫星通信系统的跳波束场景下,波束会在不同波位之间进行跳变扫描。在这种情况下,如果仍然按照地面通信系统的RO映射方法进行配置,可能会导致某一SSB映射的RO资源不在该波位的驻留时间内。由于卫星波束在各波位的驻留时间有限且动态变化,这种情况下的RO资源映射将无法确保用户设备在波位驻留时间内成功接入网络。
具体的,卫星通信系统中的跳波束场景指的是卫星的波束在不同的地理位置之间不断跳变,以覆盖更大的区域。这种跳变是按时间段进行的,每个波束在特定的时间段(称为驻留时间)覆盖一个特定区域(称为波位)。
在卫星跳波束场景中,波束在不同波位之间跳变,每个波位的驻留时间有限。如果仍然按照地面系统的RO映射规则,那么,在一个SSB映射到一个波位的情况下,当一个SSB映射到某个波位时,如果该波位的驻留时间内没有与该SSB对应的RO资源(如RO1、RO2等),用户设备(UE)在该波位的驻留时间内无法找到合适的RO资源进行随机接入尝试,导致接入失败。
例如,假设卫星系统中波束从波位1跳变到波位2。若按照地面系统的RO映射方式,SSB1对应波位1,SSB1映射的RO资源在波位1的驻留时间内,SSB2对应波位2,但由于RO资源是按照顺序依次分配的,SSB2映射的RO资源可能仍在波位1的驻留时间内,而不在波位2的驻留时间内,导致SSB2映射了不可用的RO资源。
基于上述研究,本公开提供了一种随机接入方法、设备、装置及存储介质,通过获取波束跳变信息,基于波束跳变信息确定PRACH配置索引,PRACH配置索引对应的PRACH配置在每个波位的驻留时间内确保至少有一个RO资源可用,从而使用户设备UE根据PRACH配置索引确定发起随机接入的RO资源时,能够在当前波位找到可用的RO资源发起随机接入,提高接入的成功率和效率,确保了系统的接入稳定性和可靠性。
针对以上方案所存在的缺陷,均是发明人在经过实践并仔细研究后得出的结果,因此,上述问题的发现过程以及下文中本公开针对上述问题所提出的解决方案,都应该是发明人在本公开过程中对本公开做出的贡献。
应注意到:相似的标号和字母在下面的附图中表示类似项,因此,一旦某一项在一个附图中被定义,则在随后的附图中不需要对其进行进一步定义和解释。
下面将结合本公开实施例中的附图,对本公开实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本公开一部分实施例,并不是全部的实施例。基于本公开中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本公开保护的范围。
本公开实施例提供了一种随机接入方法、设备、装置以及存储介质,用以解决在卫星通信系统中RO资源不在波位驻停时间导致的效率问题。
其中,方法和装置是基于同一发明构思的,由于方法和装置解决问题的原理相似,因此装置和方法的实施可以相互参见,重复之处不再赘述。
本公开实施例提供的技术方案可以适用于多种通信系统。例如适用的通信系统可以是长期演进(long term evolution,LTE)系统、LTE频分双工(frequency division duplex,FDD)系统、LTE时分双工(time division duplex,TDD)系统、高级长期演进(long term evolution advanced,LTE-A)系统、通用移动系统(universal mobile telecommunication system,UMTS)、全球互联微波接入(worldwide interoperability for microwave access,WiMAX)系统、5G新空口(New Radio,NR)系统及其演进通信系统等。这多种系统中可以包括终端设备和网络设备。系统中还可以包括核心网部分,例如演进的分组系统(Evloved Packet System,EPS)、5G系统(5GS)等。上述系统中可以包含多个网络。
本公开实施例涉及的终端设备(或称终端),可以是指向用户提供语音和/或数据连通性的设备,具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备等。在不同的系统中,终端设备的名称可能也不相同,例如在5G系统中,终端设备可以称为用户设备(User Equipment,UE)。无线终端设备可以是USB存储设备、其他个人计算机内存设备和加密狗,也可以经无线接入网(Radio Access Network,RAN)与一个或多个核心网(Core Network,CN)进行通信,无线终端设备可以是移动终端设备,如移动电话(或称为“蜂窝”电话)和具有移动终端设备的计算机,例如,可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置,它们与无线接入网交换语言和/或数据。例如,个人通信业务(Personal Communication Service,PCS)电话、无绳电话、会话发起协议(Session Initiated Protocol,SIP)话机、无线本地环路(Wireless Local Loop,WLL)站、个人数字助理(Personal Digital Assistant,PDA)、个人计算机、平板电脑、机器类通信(Machine-type Communication,MTC)终端设备等设备。无线终端设备也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station),移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点(access point)、远程终端设备(remote terminal)、接入终端设备(access terminal)、用户终端设备(user terminal)、用户代理(user agent)、用户装置(user device)以及满足本定义限制的无线接入器和路由器/调制解调器等,本公开实施例中并不限定。
本公开实施例涉及的网络设备,可以包括基站。该基站可以包括多个为终端提供服务的小区。根据应用场合不同,基站又可以称为接入点,或者可以是接入网中在空中接口上通过一个或多个扇区与无线终端设备通信的设备,或者其它名称。网络设备可用于将收到的空中帧与网际协议(Internet Protocol,IP)分组进行相互更换,作为无线终端设备与接入网的其余部分之间的路由器,其中接入网的其余部分可包括网际协议(IP)通信网络。网络设备还可协调对空中接口的属性管理。例如,本公开实施例涉及的网络设备可以是长期演进(long term evolution,LTE)系统中的演进型网络设备(evolutional Node B,eNB或e-NodeB)、5G网络架构(next generation system)中的5G基站(gNB)等,也可以是家庭演进基站(Home evolved Node B,HeNB)、中继节点(relay node)、家庭基站(femto)、微微基站(pico)、网络测试设备、卫星基站等,本公开实施例中并不限定。在一些网络结构中,网络设备可以包括集中单元(centralized unit,CU)节点和分布单元(distributed unit,DU)节点,集中单元和分布单元也可以地理上分开布置。
下面以执行主体为上述网络设备为例,对本公开实施例所提供的随机接入方法进行说明。
参见图3所示,为本公开实施例提供的一种随机接入方法的流程图,该方法包括步骤S301~S303,其中:
S301、获取波束跳变信息。
上述波束跳变信息能够指示不同波束间的切换和驻留时间分布。示例性的,波束跳变信息可以通过波束跳扫图样来体现。
其中,波束跳扫图样可以包括时序规律、驻留时间、波束选择顺序、波束切换策略等方面中的至少一种。
时序规律描述了波束跳变扫描的时间序列,可以包括波束扫描的周期、间隔、时长、波位顺序等信息。例如,可以规定每隔一定时间切换一次波束。
驻留时间指示了每个波位的驻留起始时间和驻留时间长度。较长的驻留时间长度可以增加通信质量的稳定性,但也可能会降低系统对动态变化的响应能力。
波束选择顺序指定了在波束跳变扫描时选择使用哪些波束的顺序或优先级,可以根据信道状态、设备位置或网络负载情况进行动态调整。
波束切换策略描述了波束跳变扫描的具体策略和算法。例如,基于先前的通信质量反馈或预测的信道状态进行波束跳变扫描。
S302、基于波束跳变信息,确定物理随机接入信道PRACH配置索引;PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源。
其中,物理随机接入信道(Physical Random Access Channel,PRACH)配置索引用于指示和配置用户设备(UE)在进行随机接入时所需的相关参数的索引值。利用该索引值,即可确定对应的PRACH配置。
PRACH配置索引用于确定在每个小区中如何配置PRACH资源,以便用户设备(UE)可以在指定的时间和频率上发送随机接入请求,与基站建立连接。
参见表1所示,为本公开实施例所提供的PRACH配置表。表1中的PRACH配置包括可以指示有前导格式(Preamble format)、具有对应RO资源的子帧(通过nf mod x=y表示)、具有对应RO资源的子帧编号(Subframe number)、起始符号(Starting symbol)、每个子帧中PRACH时隙的数量(Number of PRACH slots within a subframe)、每个PRACH时隙内RO资源的数量(number of time-domain PRACH occasions within a PRACH slot)、PRACH持续时间(PRACH duration)等信息。
表1
可见,PRACH配置索引为146时,前导格式可以为A2/B2;nf mod x=y中的x为1,y为0,也即子帧编号模1的模值等于0,也即每个子帧都具有RO资源;具有RO资源的子帧编号包括0、1、2、3、4、5、6、7、8、9;起始符号指示每个系统帧从第0个符号开始;每个子帧中PRACH时隙的数量为2;每个PRACH时隙内RO资源的数量为3;PRACH的持续时间为4个符号。
该步骤中,对于每个波位,可以根据波束跳变信息,确定每个波位的驻留时间,并确定每个波位所需的RO资源数量。然后,可以遍历PRACH配置,确定出能够使每个波位的驻留时间内存在至少一个随机接入机会RO资源的PRACH配置,并确定该PRACH配置对应的PRACH配置索引。
这样,在该PRACH配置下,不论UE处于何种波位,都能够利用该波位对应的RO资源进行随机接入。
值得注意的是,各RO资源可以按照落入每个波位驻留时间内的时间进行索引排序,也即,RO资源落入波位的驻留时间内、且索引值为1的RO资源距离波位的驻留时间的开始时间最近,并在波位的驻留时间的开始时间之后。
网络设备可以与对应UE达成共识,认为各RO资源可以按照落入每个波位驻留时间内的时间进行索引排序。这样,能够将RO资源与波位进行映射,在UE利用随机接入配置信息确定RO资源时,确保RO资源位于当前波位内。
参见图4所示,为本公开实施例所提供的RO资源与波位之间映射关系的示意图之一。图4中横轴代表时间,纵轴代表频率,每个波位对应的RO资源按照时间和频率进行分布。图4描述了卫星通信系统中,在频域复用信息Msg1-FDM=4,落入每个波位的时域RO数大于2时,不同波位(波位1到波位4)与RO资源(RO1到RO8以及后续RO资源)之间的映射关系。值得注意的是,在地面通信系统中,1个SSB通常最多映射8个RO资源,而在本公开实施例中,1个波位可以映射的RO资源可以多于8个。
S303、发送随机接入配置信息;随机接入配置信息中包括PRACH配置索引。
上述随机接入配置信息可以用于用户设备UE确定发起随机接入的RO资源,并基于RO资源发起随机接入。
在确定PRACH配置索引之后,即可将确定的PRACH配置索引以及其他随机接入配置信息发送。示例性的,可以通过小区广播、卫星系统消息广播、广播通道、地面站、专用信令等方式发送。
一种可能的实施方式中,可以通过系统消息发送随机接入配置信息。
在将随机接入配置信息发送之后,接收范围内的UE可以接收到随机接入配置信息,并利用随机接入配置信息确定发起随机接入的RO资源,进而基于RO资源发起随机接入。
示例性的,除了PRACH配置索引以外,随机接入配置信息中还可以包括频域复用度、跳波束图样、随机接入掩码索引、子帧级别的随机接入配置信息和其他控制参数中的至少一种。
其中,PRACH配置索引对应的PRACH配置能够指示在每个子帧中哪些资源块被配置为随机接入信道,用于帮助UE确定在哪个时隙内可以进行随机接入。
频域复用度能够表示分配给随机接入信道的频域资源被划分成几份,该参数能够影响随机接入信道的频域资源分配情况。
跳波束图样能够描述卫星通信系统中每个波束的跳变规律。
随机接入掩码索引用于UE根据特定的随机接入掩码,从PRACH配置索引指示的资源块中选择合适的资源进行随机接入。每个随机接入掩码索引都与一组可用的随机接入资源相关联。
子帧级别的随机接入配置信息包括了PRACH配置索引指示的每个子帧中的RO资源数量以及它们的时域分布。这些信息告诉设备每个子帧内在时间上的随机接入资源安排情况。
其他控制参数可以包括其他如时隙配置、传输参数、功率控制等相关的控制参数,这些参数影响了设备发起随机接入请求的具体方式和时机。
由于在本公开实施例中,一个SSB对应一个波位,因此,可以直接根据PRACH配置索引确定出可以使用的RO资源。
在一种可能的实施方式中,随机接入配置信息中还可以包括频域复用度,UE能够利用跳波束图样以及PRACH配置索引指示的每个子帧在时域上的RO数量,确定出哪些RO资源可用,并基于频域复用度将可用的RO资源分为多个频度,进行排序。
参见图5所示,为本公开实施例所提供的RO资源与波位之间映射关系的示意图之二。图5中横轴代表时间,纵轴代表频率,每个波位对应的RO资源按照时间和频率进行分布。在一种实施方式中,若频域复用度为2,每个子帧的RO数量为12,波位驻留时间为1ms,频度1上的RO资源可以包括RO1、RO3、RO5、RO7、RO9、RO11,频度2上的RO资源可以包括RO2、RO4、RO6、RO8、RO10、RO12,且RO1对应的时隙距离波位驻留时间的起始时间最近,RO1至RO12根据时序先后排列。
通常,随机接入过程可以包括竞争性随机接入和非竞争性随机接入。在竞争性随机接入中,多个设备可能同时尝试使用相同的随机接入资源。基站需要使用冲突检测机制(如随机接入冲突检测)来处理多个设备同时请求的情况。
在非竞争性随机接入中,网络设备可以预先为UE分配预定的资源,供特定UE使用。示例性的,网络设备可以在随机接入配置信息中携带随机接入掩码索引,帮助设备在随机接入信道(PRACH)上选择合适的资源来发送预备请求(如前导码Preamble),从而请求网络分配资源以建立连接。
随机接入掩码索引(PRACH Mask Index)可以是一个数字或标识符,用于确定设备在哪个随机接入信道PRACH配置索引中的哪个资源块(也即RO资源)上发送随机接入请求。通过随机接入掩码索引,UE能够在PRACH周期内,根据网络侧配置的随机接入资源规则,选择可以使用的RO资源。这样可以避免冲突和提高接入的效率。
示例性的,随机接入配置信息中还可以包括第一随机接入掩码索引。网络设备在确定PRACH配置索引之后,可以在PRACH配置索引对应的各RO资源中,为满足目标特性组合的用户设备UE确定第一专用RO资源,并确定第一专用RP资源对应的第一随机接入掩码索引。
其中,各随机接入掩码索引与RO索引之间存在映射关系;第一随机接入掩码索引用于满足目标特性组合的UE从PRACH配置索引对应的各RO资源中确定第一专用RO资源。
示例性的,上述目标特性组合可以指特征组合(Feature Combination),特性组合指在技术或产品设计中,将多个不同的特性或功能组合在一起,以满足特定的需求或实现特定的目标。在通信系统中,特征组合可以指多种通信技术的集成或协同工作,以提供更好的用户体验或更高效的通信服务。例如,将多载波通信(Multi-carrier Communication)与自适应调制(Adaptive Modulation)结合,以在不同条件下优化数据传输速率和可靠性。
在一些可能的实施方式中,处于连接态的UE可能需要重新进行随机接入。比如,当连接态的UE移动到一个新的小区(Cell)时,它需要重新接入新的小区以维持通信连接。这种情况下,UE会执行随机接入过程,以获取新小区的控制信道资源,确保持续的通信服务。如果网络侧对时空资源进行了重分配或重新配置,可能会影响到连接态UE的服务。在这种情况下,UE可能需要重新进行随机接入,以适应新的资源分配情况。
在上述情况下,网络设备也可以为UE分配专用的RO资源,供UE快速与网络设备重新连接,因此,可以通过专用信令向该连接态的UE发送第二随机接入掩码索引,以提高效率。
由于本公开实施例中,一个波位下可以映射的RO资源可以有多个,而目前通信系统仅能够识别预设最大数量的RO资源(如地面通信中预设最大数量可以为8),因此,可以通过将随机接入掩码索引与RO索引之间进行映射,使UE以及网络设备能够识别到具体的RO资源。
在一种可能的实施方式中,对于1个SSB对应多个RO资源情况,或者在卫星场景下一个波位对应多个RO资源的情况下,若每个波位的RO资源数量大于预设最大数量,则随机接入掩码索引与RO索引之间的映射关系可以包括:
随机接入掩码索引等于对RO索引进行取模运算后加1的取值,取模运算的模值等于预设最大数量。
示例性的,可以采用以下公式确定随机接入掩码索引等于对RO索引进行取模运算后加1的取值:
PRACH Mask Index=[RO_index mod 8]+1
其中,PRACH Mask Index为随机接入掩码索引,RO_index为RO索引。
示例性的,若随机接入掩码索引的索引值为3,且预设最大数量为8,波位的RO资源数量为12,则该随机接入掩码索引对应的RO资源可以包括RO2以及RO10。
在另一种可能的实施方式中,若每个波位的RO资源数量大于预设最大数量,则随机接入掩码索引与RO索引之间的映射关系可以包括:
在随机接入掩码索引等于11的情况下,RO索引可以包括9到12;在随机接入掩码索引等于12的情况下,RO索引可以包括13到16。
其中,由于目前通信系统中,随机接入掩码索引小于或等于8时,随机接入掩码索引等于RO索引,随机接入掩码索引等于9时,代表所有索引为偶数的RO资源,随机接入掩码索引等于10时,代表所有索引为单数的RO资源,因此,可以将大于10的随机接入掩码索引映射到8以后的RO索引上,并可以将一个随机接入掩码索引映射到多个RO索引。
在具体实施过程中,若该专用RO资源是为FeatureCombination的UE分配的,则可以通过ssb-SharedRO-MaskIndex参数进行配置。
参见表2所示,为在应用本公开实施例之前,地面通信系统中随机接入掩码索引与RO索引之间映射关系的示意表。其中,随机接入掩码索引可以表示为PRACH Mask Index或msgA-SSB-SharedRO-MaskIndex,SSB可用的RO资源可以表示为Allowed PRACH occasion(s)of SSB。
表2
可见,当随机接入掩码索引为0时,对应的可用的RO资源的索引为所有RO索引;当随机接入掩码索引为1时,对应的可用的RO资源的索引(PRACH occasion index)为1,以此类推,当随机接入掩码索引为8时,对应的可用RO资源的索引为8;当随机接入掩码索引为9时,对应的可用的RO资源为每个索引为偶数的RO资源;当所及接入掩码索引为10时,对应的可用的RO资源为每个索引为奇数的RO资源;当随机接入掩码索引为11至15时,对应的RO资源则为空,处于待映射的保留状态。
在本公开实施例中,在随机接入掩码索引等于11的情况下,RO索引可以包括9到12;在随机接入掩码索引等于12的情况下,RO索引可以包括13到16。
参见表3所示,为本公开实施例所提供的随机接入掩码索引与RO索引之间的映射关系的示意表。
表3
可见,当随机接入掩码索引为0-10时,随机接入掩码索引对应的RO资源与地面通信系统中一致;当随机接入掩码索引为11时,对应的可用RO资源为索引为9到12的RO资源;当随机接入掩码索引为12时,对应的可用RO资源为索引为13到16的RO资源。相较于地面通信系统,本公开实施例能够支持将随机接入掩码索引映射到更多的RO资源,并能够利用保留位的13、14、15等随机接入掩码索引映射到其他的RO资源,如PRACH occasion index 17-19、PRACH occasion index 20-12、PRACH occasion index 23-25等。
上述本公开实施例介绍了在一个SSB对应一个波位的情况下,进行随机接入的方法。对于多个SSB对应一个波位的情况,可以结合接收SSB时获取到的SSB索引确定可利用的RO资源。也即,UE可以根据SSB索引,在当前波位的所有RO资源中,确定与该SSB索引对应的SSB。
示例性的,若当前波位对应有12个RO资源,且当前波位对应2个SSB,SSB索引的索引值为2,则UE可以根据SSB索引,确定RO1至RO12中,RO7至RO12作为SSB2对应的可用的RO资源。
这样,通过上述方式,可以增加映射RO资源的数量,从而拓展资源池,使得设备有更多的选择,减少冲突的可能性,降低PRACH碰撞概率,进而提高接入成功率,减少通信延迟和网络负载,提高系统的整体效率和性能。
值得注意的是,在网络设备发送的随机接入配置信息中携带有第一随机接入掩码索引时,UE可以根据自身是否具有第一随机接入掩码索引对应的目标特性组合,判断是否使用第一随机接入掩码索引对应的第一专用RO资源。
示例性的,若UE具有目标特性组合,则UE可以基于第一随机接入掩码索引,确定出第一专用RO资源,并基于第一专用RO资源发起所及接入;若UE不具有目标特性组合,则UE可以基于第一随机接入掩码索引,从PRACH配置索引对应的各RO资源中,确定出除第一RO资源外的、当前能够使用的目标RO资源,并基于目标RO资源发起随机接入。
参见图6所示,为本公开实施例提供的另一种随机接入方法的示意图,该方法的执行主体可以为用户设备UE,该方法包括:
S601、接收网络设备发送的随机接入配置信息;随机接入配置信息中包括物理随机接入信道PRACH配置索引;PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源;
S602、基于随机接入配置信息,确定随机接入机会RO资源;
S603、基于RO资源发起随机接入。
在一些实施例中,各RO资源按照落入每个波位驻留时间内的时间进行索引排序。
在一些实施例中,UE具有目标特性组合;
随机接入配置信息中还包括第一随机接入掩码索引;第一随机接入掩码索引用于分配给具有目标特性组合的UE;各随机接入掩码索引与RO索引之间存在映射关系;
基于随机接入配置信息,确定随机接入机会RO资源,包括:
基于第一随机接入掩码索引,从PRACH配置索引对应的各RO资源中确定第一专用RO资源;
基于RO资源发起随机接入,包括:
基于第一专用RO资源发起随机接入。
在一些实施例中,UE不具有目标特性组合;
随机接入配置信息中还包括第一随机接入掩码索引;第一随机接入掩码索引用于分配给具有目标特性组合的UE;各随机接入掩码索引与RO索引之间存在映射关系;
基于随机接入配置信息,确定随机接入机会RO资源,包括:
基于第一随机接入掩码索引,从PRACH配置索引对应的各RO资源中确定除第一专用RO资源外的当前能够使用的目标RO资源;
基于RO资源发起随机接入,包括:
基于目标RO资源发起随机接入。
在一些实施例中,方法还包括:
在连接态下接收网络设备发送的第二随机接入掩码索引;各随机接入掩码索引与RO索引之间存在映射关系;
基于随机接入配置信息,确定随机接入机会RO资源,包括:
基于第二随机接入掩码索引,从PRACH配置索引对应的各RO资源中确定UE专用的第二专用RO资源;
基于RO资源发起随机接入,包括:
基于第二专用RO资源发起随机接入。
在一些实施例中,在每个波位的RO资源数量大于预设最大数量的情况下,各随机接入掩码索引与RO索引之间的映射关系包括:
随机接入掩码索引等于对RO索引进行取模运算后加1的取值,取模运算的模值等于预设最大数量。
在一些实施例中,在每个波位的RO资源数量大于预设最大数量的情况下,各随机接入掩码索引与RO索引之间的映射关系包括:
在随机接入掩码索引等于11的情况下,RO索引包括9到12;在随机接入掩码索引等于12的情况下,RO索引包括13到16。
在一些实施例中,随机接入配置信息中还包括频域复用度和跳波束图样;跳波束图样用于指示每个波位的驻留时间;
基于随机接入配置信息,确定随机接入机会RO资源,包括:
基于PRACH配置索引指示的每个子帧在时域上的RO数量、频域复用度、以及跳波束图样,确定RO资源。
在一些实施例中,接收网络设备发送的随机接入配置信息,包括:
接收网络设备通过系统消息发送的PRACH配置索引。
在一些实施例中,在连接态下接收网络设备发送的第二随机接入掩码索引,包括:
在连接态下接收网络设备通过专用信令发送的第二随机接入掩码索引。
本领域技术人员可以理解,在具体实施方式的上述方法中,各步骤的撰写顺序并不意味着严格的执行顺序而对实施过程构成任何限定,各步骤的具体执行顺序应当以其功能和可能的内在逻辑确定。
与上述随机接入方法对应,本公开实施例还提供了一种随机接入设备。参见图7所示,为本公开实施例所提供的一种随机接入设备的示意图。该设备可以部署于网络设备,可包括:
存储器710,用于存储计算机程序;收发机720,用于在处理器730的控制下接收和发送数据。其中,处理器730与存储器710也可以在物理上分开布置。
其中,在图7中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器730代表的一个或多个处理器和存储器710代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机720可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元,这些传输介质包括无线信道、有线信道、光缆等传输介质。处理器730负责管理总线架构和通常的处理,存储器710可以存储处理器730在执行操作时所使用的数据。
处理器730可以是中央处埋器(CPU)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device,CPLD),处理器也可以采用多核架构。
处理器730通过调用存储器710存储的计算机程序,用于按照获得的可执行指令执行本公开实施例提供的任一所述方法,例如:
获取波束跳变信息;
基于波束跳变信息,确定物理随机接入信道PRACH配置索引;PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源;
发送随机接入配置信息;随机接入配置信息中包括PRACH配置索引。
在一些实施例中,各RO资源按照落入每个波位驻留时间内的时间进行索引排序。
在一些实施例中,处理器710还用于执行:
随机接入配置信息中还包括第一随机接入掩码索引;
在PRACH配置索引对应的各RO资源中,为满足目标特性组合的用户设备UE确定第一专用RO资源,并确定第一专用RO资源对应的第一随机接入掩码索引;
其中,各随机接入掩码索引与RO索引之间存在映射关系;第一随机接入掩码索引用于满足目标特性组合的UE从PRACH配置索引对应的各RO资源中确定第一专用RO资源。
在一些实施例中,处理器710还用于执行:
在PRACH配置索引对应的各RO资源中,为连接态用户设备UE确定第二专用RO资源,并确定第二专用RO资源对应的第二随机接入掩码索引;其中,各随机接入掩码索引与RO索引之间存在映射关系;第二随机接入掩码索引用于从各RO资源中确定第二专用RO资源;
向连接态UE发送第二随机接入掩码索引。
在一些实施例中,在每个波位的RO资源数量大于预设最大数量的情况下,各随机接入掩码索引与RO索引之间的映射关系包括:
随机接入掩码索引等于对RO索引进行取模运算后加1的取值,取模运算的模值等于预设最大数量。
在一些实施例中,在每个波位的RO资源数量大于预设最大数量的情况下,各随机接入掩码索引与RO索引之间的映射关系包括:
在随机接入掩码索引等于11的情况下,RO索引包括9到12;在随机接入掩码索引等于12的情况下,RO索引包括13到16。
在一些实施例中,随机接入配置信息中还包括频域复用度和跳波束图样;跳波束图样用于指示每个波位的驻留时间;
频域复用度、跳波束图样、以及PRACH配置索引指示的每个子帧在时域上的RO数量,用于确定发起随机接入的RO资源。
在一些实施例中,发送随机接入配置信息,包括:
通过系统消息发送随机接入配置信息。
在一些实施例中,向连接态UE发送第二随机接入掩码索引,包括:
通过专用信令向连接态UE发送第二随机接入掩码索引。
本公开实施例还提供了另一种随机接入设备。参见图8所示,为本公开实施例所提供的另一种随机接入设备的示意图。该设备可以部署于用户设备,可包括:
存储器810,用于存储计算机程序;收发机820,用于在处理器830的控制下接收和发送数据。其中,处理器830与存储器810也可以在物理上分开布置。
其中,在图8中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器830代表的一个或多个处理器和存储器810代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机820可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元,这些传输介质包括无线信道、有线信道、光缆等传输介质。处理器830负责管理总线架构和通常的处理,存储器810可以存储处理器830在执行操作时所使用的数据。
处理器830可以是中央处埋器(CPU)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device,CPLD),处理器也可以采用多核架构。
处理器830通过调用存储器810存储的计算机程序,用于按照获得的可执行指令执行本公开实施例提供的任一所述方法,例如:
接收网络设备发送的随机接入配置信息;随机接入配置信息中包括物理随机接入信道PRACH配置索引;PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源;
基于随机接入配置信息,确定随机接入机会RO资源;
基于RO资源发起随机接入。
在一些实施例中,各RO资源按照落入每个波位驻留时间内的时间进行索引排序。
在一些实施例中,UE具有目标特性组合;
随机接入配置信息中还包括第一随机接入掩码索引;第一随机接入掩码索引用于分配给具有目标特性组合的UE;各随机接入掩码索引与RO索引之间存在映射关系;
基于随机接入配置信息,确定随机接入机会RO资源,包括:
基于第一随机接入掩码索引,从PRACH配置索引对应的各RO资源中确定第一专用RO资源;
基于RO资源发起随机接入,包括:
基于第一专用RO资源发起随机接入。
在一些实施例中,UE不具有目标特性组合;
随机接入配置信息中还包括第一随机接入掩码索引;第一随机接入掩码索引用于分配给具有目标特性组合的UE;各随机接入掩码索引与RO索引之间存在映射关系;
基于随机接入配置信息,确定随机接入机会RO资源,包括:
基于第一随机接入掩码索引,从PRACH配置索引对应的各RO资源中确定除第一专用RO资源外的当前能够使用的目标RO资源;
基于RO资源发起随机接入,包括:
基于目标RO资源发起随机接入。
在一些实施例中,处理器610还用于执行:
在连接态下接收网络设备发送的第二随机接入掩码索引;各随机接入掩码索引与RO索引之间存在映射关系;
基于随机接入配置信息,确定随机接入机会RO资源,包括:
基于第二随机接入掩码索引,从PRACH配置索引对应的各RO资源中确定UE专用的第二专用RO资源;
基于RO资源发起随机接入,包括:
基于第二专用RO资源发起随机接入。
在一些实施例中,在每个波位的RO资源数量大于预设最大数量的情况下,各随机接入掩码索引与RO索引之间的映射关系包括:
随机接入掩码索引等于对RO索引进行取模运算后加1的取值,取模运算的模值等于预设最大数量。
在一些实施例中,在每个波位的RO资源数量大于预设最大数量的情况下,各随机接入掩码索引与RO索引之间的映射关系包括:
在随机接入掩码索引等于11的情况下,RO索引包括9到12;在随机接入掩码索引等于12的情况下,RO索引包括13到16。
在一些实施例中,随机接入配置信息中还包括频域复用度和跳波束图样;跳波束图样用于指示每个波位的驻留时间;
基于随机接入配置信息,确定随机接入机会RO资源,包括:
基于PRACH配置索引指示的每个子帧在时域上的RO数量、频域复用度、以及跳波束图样,确定RO资源。
在一些实施例中,接收网络设备发送的随机接入配置信息,包括:
接收网络设备通过系统消息发送的PRACH配置索引。
在一些实施例中,在连接态下接收网络设备发送的第二随机接入掩码索引,包括:
在连接态下接收网络设备通过专用信令发送的第二随机接入掩码索引。
参见图9所示,为本公开实施例提供的一种随机接入装置的示意图。该装置可应用于网络设备,该装置包括:
获取单元910,用于获取波束跳变信息;
第一确定单元920,用于基于波束跳变信息,确定物理随机接入信道PRACH配置索引;PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源;
发送单元930,用于发送随机接入配置信息;随机接入配置信息中包括PRACH配置索引。
在一些实施例中,各RO资源按照落入每个波位驻留时间内的时间进行索引排序。
在一些实施例中,第一确定单元920还用于:
随机接入配置信息中还包括第一随机接入掩码索引;
在PRACH配置索引对应的各RO资源中,为满足目标特性组合的用户设备UE确定第一专用RO资源,并确定第一专用RO资源对应的第一随机接入掩码索引;
其中,各随机接入掩码索引与RO索引之间存在映射关系;第一随机接入掩码索引用于满足目标特性组合的UE从PRACH配置索引对应的各RO资源中确定第一专用RO资源。
在一些实施例中,第一确定单元920还用于:
在PRACH配置索引对应的各RO资源中,为连接态用户设备UE确定第二专用RO资源,并确定第二专用RO资源对应的第二随机接入掩码索引;其中,各随机接入掩码索引与RO索引之间存在映射关系;第二随机接入掩码索引用于从各RO资源中确定第二专用RO资源;
发送单元930还用于:
向连接态UE发送第二随机接入掩码索引。
在一些实施例中,在每个波位的RO资源数量大于预设最大数量的情况下,各随机接入掩码索引与RO索引之间的映射关系包括:
随机接入掩码索引等于对RO索引进行取模运算后加1的取值,取模运算的模值等于预设最大数量。
在一些实施例中,在每个波位的RO资源数量大于预设最大数量的情况下,各随机接入掩码索引与RO索引之间的映射关系包括:
在随机接入掩码索引等于11的情况下,RO索引包括9到12;在随机接入掩码索引等于12的情况下,RO索引包括13到16。
在一些实施例中,随机接入配置信息中还包括频域复用度和跳波束图样;跳波束图样用于指示每个波位的驻留时间;
频域复用度、跳波束图样、以及PRACH配置索引指示的每个子帧在时域上的RO数量,用于确定发起随机接入的RO资源。
在一些实施例中,发送单元930用于:
通过系统消息发送随机接入配置信息。
在一些实施例中,发送单元930用于:
通过专用信令向连接态UE发送第二随机接入掩码索引。
参见图10所示,为本公开实施例提供的另一种随机接入装置的示意图。该装置可应用于用户设备,该装置包括:
接收单元1010,用于接收网络设备发送的随机接入配置信息;随机接入配置信息中包括物理随机接入信道PRACH配置索引;PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源;
第二确定单元1020,用于基于随机接入配置信息,确定随机接入机会RO资源;
接入单元1030,用于基于RO资源发起随机接入。
在一些实施例中,各RO资源按照落入每个波位驻留时间内的时间进行索引排序。
在一些实施例中,UE具有目标特性组合;
随机接入配置信息中还包括第一随机接入掩码索引;第一随机接入掩码索引用于分配给具有目标特性组合的UE;各随机接入掩码索引与RO索引之间存在映射关系;
第二确定单元1020用于:
基于第一随机接入掩码索引,从PRACH配置索引对应的各RO资源中确定第一专用RO资源;
接入单元1030用于:
基于第一专用RO资源发起随机接入。
在一些实施例中,UE不具有目标特性组合;
随机接入配置信息中还包括第一随机接入掩码索引;第一随机接入掩码索引用于分配给具有目标特性组合的UE;各随机接入掩码索引与RO索引之间存在映射关系;
第二确定单元1020用于:
基于第一随机接入掩码索引,从PRACH配置索引对应的各RO资源中确定除第一专用RO资源外的当前能够使用的目标RO资源;
接入单元1030用于:
基于目标RO资源发起随机接入。
在一些实施例中,接收单元1010还用于:
在连接态下接收网络设备发送的第二随机接入掩码索引;各随机接入掩码索引与RO索引之间存在映射关系;
第二确定单元1020用于:
基于第二随机接入掩码索引,从PRACH配置索引对应的各RO资源中确定UE专用的第二专用RO资源;
接入单元1030还用于:
基于第二专用RO资源发起随机接入。
在一些实施例中,在每个波位的RO资源数量大于预设最大数量的情况下,各随机接入掩码索引与RO索引之间的映射关系包括:
随机接入掩码索引等于对RO索引进行取模运算后加1的取值,取模运算的模值等于预设最大数量。
在一些实施例中,在每个波位的RO资源数量大于预设最大数量的情况下,各随机接入掩码索引与RO索引之间的映射关系包括:
在随机接入掩码索引等于11的情况下,RO索引包括9到12;在随机接入掩码索引等于12的情况下,RO索引包括13到16。
在一些实施例中,随机接入配置信息中还包括频域复用度和跳波束图样;跳波束图样用于指示每个波位的驻留时间;
基于随机接入配置信息,确定随机接入机会RO资源,包括:
基于PRACH配置索引指示的每个子帧在时域上的RO数量、频域复用度、以及跳波束图样,确定RO资源。
在一些实施例中,接收单元1010用于:
接收网络设备通过系统消息发送的PRACH配置索引。
在一些实施例中,接收单元1010用于:
在连接态下接收网络设备通过专用信令发送的第二随机接入掩码索引。
需要说明的是,本公开实施例中对单元的划分是示意性的,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式。另外,在本公开各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个处理器可读取存储介质中。基于这样的理解,本公开的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)或处理器(processor)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(Read-Only Memory,ROM)、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
在此需要说明的是,本公开实施例提供的上述装置,能够实现上述方法实施例所实现的所有方法步骤,且能够达到相同的技术效果,在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
另一方面,本公开实施例还提供一种处理器可读存储介质,所述处理器可读存储介质存储有计算机程序,所述计算机程序用于使计算机执行上述各实施例提供的随机接入方法。
在此需要说明的是,本公开实施例提供的计算机可读存储介质,能够实现上述方法实施例所实现的所有方法步骤,且能够达到相同的技术效果,在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
所述处理器可读存储介质可以是计算机能够存取的任何可用介质或数据存储设备,包括但不限于磁性存储器(例如软盘、硬盘、磁带、磁光盘(MO)等)、光学存储器(例如CD、DVD、BD、HVD等)、以及半导体存储器(例如ROM、EPROM、EEPROM、非易失性存储器(NANDFLASH)、固态硬盘(SSD))等。
本公开实施例还提供一种计算机程序产品,所述计算机程序产品在被计算机调用时,使得所述计算机执行如上所述随机接入方法的步骤。
本领域内的技术人员应明白,本公开的实施例可提供为方法、系统、或计算机程序产品。因此,本公开可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本公开可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本公开是参照根据本公开实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机可执行指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机可执行指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些处理器可执行指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的处理器可读存储器中,使得存储在该处理器可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些处理器可执行指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然,本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样,倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内,则本公开也意图包含这些改动和变型在内。
Claims (41)
- 一种随机接入方法,其中,应用于网络设备,所述方法包括:获取波束跳变信息;基于所述波束跳变信息,确定物理随机接入信道PRACH配置索引;所述PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源;发送随机接入配置信息;所述随机接入配置信息中包括所述PRACH配置索引。
- 根据权利要求1所述的方法,其中,各所述RO资源按照落入每个波位驻留时间内的时间进行索引排序。
- 根据权利要求2所述的方法,其中,所述方法还包括:所述随机接入配置信息中还包括第一随机接入掩码索引;在所述PRACH配置索引对应的各RO资源中,为满足目标特性组合的用户设备UE确定第一专用RO资源,并确定所述第一专用RO资源对应的第一随机接入掩码索引;其中,各随机接入掩码索引与RO索引之间存在映射关系;所述第一随机接入掩码索引用于所述满足目标特性组合的UE从所述PRACH配置索引对应的各RO资源中确定所述第一专用RO资源。
- 根据权利要求2所述的方法,其中,所述方法还包括:在所述PRACH配置索引对应的各RO资源中,为连接态用户设备UE确定第二专用RO资源,并确定所述第二专用RO资源对应的第二随机接入掩码索引;其中,各随机接入掩码索引与RO索引之间存在映射关系;所述第二随机接入掩码索引用于从各RO资源中确定所述第二专用RO资源;向所述连接态UE发送所述第二随机接入掩码索引。
- 根据权利要求3或4所述的方法,其中,在每个波位的RO资源数量大于预设最大数量的情况下,所述各随机接入掩码索引与RO索引之间的映射关系包括:所述随机接入掩码索引等于对RO索引进行取模运算后加1的取值,所述取模运算的模值等于所述预设最大数量。
- 根据权利要求3或4所述的方法,其中,在每个波位的RO资源数量大于预设最大数量的情况下,所述各随机接入掩码索引与RO索引之间的映射关系包括:在所述随机接入掩码索引等于11的情况下,所述RO索引包括9到12;在所述随机接入掩码索引等于12的情况下,所述RO索引包括13到16。
- 根据权利要求1~4任一所述的方法,其中,所述随机接入配置信息中还包括频域复用度和跳波束图样;所述跳波束图样用于指示每个波位的驻留时间;所述频域复用度、所述跳波束图样、以及所述PRACH配置索引指示的每个子帧在时域上的RO数量,用于确定发起随机接入的所述RO资源。
- 根据权利要求1~4任一所述的方法,其中,所述发送随机接入配置信息,包括:通过系统消息发送所述随机接入配置信息。
- 根据权利要求4所述的方法,其中,所述向所述连接态UE发送所述第二随机接入掩码索引,包括:通过专用信令向所述连接态UE发送所述第二随机接入掩码索引。
- 一种随机接入方法,其中,应用于用户设备UE,所述方法包括:接收网络设备发送的随机接入配置信息;所述随机接入配置信息中包括物理随机接入信道PRACH配置索引;所述PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源;基于所述随机接入配置信息,确定随机接入机会RO资源;基于所述RO资源发起随机接入。
- 根据权利要求10所述的方法,其中,各所述RO资源按照落入每个波位驻留时间内的时间进行索引排序。
- 根据权利要求11所述的方法,其中,所述UE具有目标特性组合;所述随机接入配置信息中还包括第一随机接入掩码索引;所述第一随机接入掩码索引用于分配给具有目标特性组合的UE;各随机接入掩码索引与RO索引之间存在映射关系;所述基于所述随机接入配置信息,确定随机接入机会RO资源,包括:基于所述第一随机接入掩码索引,从所述PRACH配置索引对应的各RO资源中确定第一专用RO资源;所述基于所述RO资源发起随机接入,包括:基于所述第一专用RO资源发起随机接入。
- 根据权利要求11所述的方法,其中,所述UE不具有目标特性组合;所述随机接入配置信息中还包括第一随机接入掩码索引;所述第一随机接入掩码索引用于分配给具有目标特性组合的UE;各随机接入掩码索引与RO索引之间存在映射关系;所述基于所述随机接入配置信息,确定随机接入机会RO资源,包括:基于所述第一随机接入掩码索引,从所述PRACH配置索引对应的各RO资源中确定除第一专用RO资源外的当前能够使用的目标RO资源;所述基于所述RO资源发起随机接入,包括:基于所述目标RO资源发起随机接入。
- 根据权利要求11所述的方法,其中,所述方法还包括:在连接态下接收所述网络设备发送的第二随机接入掩码索引;各随机接入掩码索引与RO索引之间存在映射关系;所述基于所述随机接入配置信息,确定随机接入机会RO资源,包括:基于所述第二随机接入掩码索引,从所述PRACH配置索引对应的各RO资源中确定所述UE专用的第二专用RO资源;所述基于所述RO资源发起随机接入,包括:基于所述第二专用RO资源发起随机接入。
- 根据权利要求12~14任一所述的方法,其中,在每个波位的RO资源数量大于预设最大数量的情况下,所述各随机接入掩码索引与RO索引之间的映射关系包括:所述随机接入掩码索引等于对RO索引进行取模运算后加1的取值,所述取模运算的模值等于所述预设最大数量。
- 根据权利要求12~14任一所述的方法,其中,在每个波位的RO资源数量大于预设最大数量的情况下,所述各随机接入掩码索引与RO索引之间的映射关系包括:在所述随机接入掩码索引等于11的情况下,所述RO索引包括9到12;在所述随机接入掩码索引等于12的情况下,所述RO索引包括13到16。
- 根据权利要求10所述的方法,其中,所述随机接入配置信息中还包括频域复用度和跳波束图样;所述跳波束图样用于指示每个波位的驻留时间;所述基于所述随机接入配置信息,确定随机接入机会RO资源,包括:基于所述PRACH配置索引指示的每个子帧在时域上的RO数量、所述频域复用度、以及所述跳波束图样,确定RO资源。
- 根据权利要求10所述的方法,其中,所述接收网络设备发送的随机接入配置信息,包括:接收网络设备通过系统消息发送的所述PRACH配置索引。
- 根据权利要求14所述的方法,其中,在连接态下接收所述网络设备发送的第二随机接入掩码索引,包括:在连接态下接收所述网络设备通过专用信令发送的第二随机接入掩码索引。
- 一种随机接入设备,其中,包括存储器,收发机,处理器;所述存储器,用于存储计算机程序;所述收发机,用于在所述处理器的控制下收发数据;所述处理器,用于读取所述存储器中的计算机程序并执行以下操作:获取波束跳变信息;基于所述波束跳变信息,确定物理随机接入信道PRACH配置索引;所述PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源;发送随机接入配置信息;所述随机接入配置信息中包括所述PRACH配置索引。
- 根据权利要求20所述的设备,其中,各所述RO资源按照落入每个波位驻留时间内的时间进行索引排序。
- 根据权利要求21所述的设备,其中,所述处理器还用于执行:所述随机接入配置信息中还包括第一随机接入掩码索引;在所述PRACH配置索引对应的各RO资源中,为满足目标特性组合的用户设备UE确定第一专用RO资源,并确定所述第一专用RO资源对应的第一随机接入掩码索引;其中,各随机接入掩码索引与RO索引之间存在映射关系;所述第一随机接入掩码索引用于所述满足目标特性组合的UE从所述PRACH配置索引对应的各RO资源中确定所述第一专用RO资源。
- 根据权利要求21所述的设备,其中,所述处理器还用于执行:在所述PRACH配置索引对应的各RO资源中,为连接态用户设备UE确定第二专用RO资源,并确定所述第二专用RO资源对应的第二随机接入掩码索引;其中,各随机接入掩码索引与RO索引之间存在映射关系;所述第二随机接入掩码索引用于从各RO资源中确定所述第二专用RO资源;向所述连接态UE发送所述第二随机接入掩码索引。
- 根据权利要求22或23所述的设备,其中,在每个波位的RO资源数量大于预设最大数量的情况下,所述各随机接入掩码索引与RO索引之间的映射关系包括:所述随机接入掩码索引等于对RO索引进行取模运算后加1的取值,所述取模运算的模值等于所述预设最大数量。
- 根据权利要求22或23所述的设备,其中,在每个波位的RO资源数量大于预设最大数量的情况下,所述各随机接入掩码索引与RO索引之间的映射关系包括:在所述随机接入掩码索引等于11的情况下,所述RO索引包括9到12;在所述随机接入掩码索引等于12的情况下,所述RO索引包括13到16。
- 根据权利要求20~23任一所述的设备,其中,所述随机接入配置信息中还包括频域复用度和跳波束图样;所述跳波束图样用于指示每个波位的驻留时间;所述频域复用度、所述跳波束图样、以及所述PRACH配置索引指示的每个子帧在时域上的RO数量,用于确定发起随机接入的所述RO资源。
- 根据权利要求20~23任一所述的设备,其中,所述发送随机接入配置信息,包括:通过系统消息发送所述随机接入配置信息。
- 根据权利要求23所述的设备,其中,所述向所述连接态UE发送所述第二随机接入掩码索引,包括:通过专用信令向所述连接态UE发送所述第二随机接入掩码索引。
- 一种随机接入设备,其中,用于用户设备UE,包括存储器,收发机,处理器;所述存储器,用于存储计算机程序;所述收发机,用于在所述处理器的控制下收发数据;所述处理器,用于读取所述存储器中的计算机程序并执行以下操作:接收网络设备发送的随机接入配置信息;所述随机接入配置信息中包括物理随机接入信道PRACH配置索引;所述PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源;基于所述随机接入配置信息,确定随机接入机会RO资源;基于所述RO资源发起随机接入。
- 根据权利要求29所述的设备,其中,各所述RO资源按照落入每个波位驻留时间内的时间进行索引排序。
- 根据权利要求30所述的设备,其中,所述UE具有目标特性组合;所述随机接入配置信息中还包括第一随机接入掩码索引;所述第一随机接入掩码索引用于分配给具有目标特性组合的UE;各随机接入掩码索引与RO索引之间存在映射关系;所述基于所述随机接入配置信息,确定随机接入机会RO资源,包括:基于所述第一随机接入掩码索引,从所述PRACH配置索引对应的各RO资源中确定第一专用RO资源;所述基于所述RO资源发起随机接入,包括:基于所述第一专用RO资源发起随机接入。
- 根据权利要求30所述的设备,其中,所述UE不具有目标特性组合;所述随机接入配置信息中还包括第一随机接入掩码索引;所述第一随机接入掩码索引用于分配给具有目标特性组合的UE;各随机接入掩码索引与RO索引之间存在映射关系;所述基于所述随机接入配置信息,确定随机接入机会RO资源,包括:基于所述第一随机接入掩码索引,从所述PRACH配置索引对应的各RO资源中确定除第一专用RO资源外的当前能够使用的目标RO资源;所述基于所述RO资源发起随机接入,包括:基于所述目标RO资源发起随机接入。
- 根据权利要求30所述的设备,其中,所述处理器还用于执行:在连接态下接收所述网络设备发送的第二随机接入掩码索引;各随机接入掩码索引与RO索引之间存在映射关系;所述基于所述随机接入配置信息,确定随机接入机会RO资源,包括:基于所述第二随机接入掩码索引,从所述PRACH配置索引对应的各RO资源中确定所述UE专用的第二专用RO资源;所述基于所述RO资源发起随机接入,包括:基于所述第二专用RO资源发起随机接入。
- 根据权利要求31~33任一所述的设备,其中,在每个波位的RO资源数量大于预设最大数量的情况下,所述各随机接入掩码索引与RO索引之间的映射关系包括:所述随机接入掩码索引等于对RO索引进行取模运算后加1的取值,所述取模运算的模值等于所述预设最大数量。
- 根据权利要求31~33任一所述的设备,其中,在每个波位的RO资源数量大于预设最大数量的情况下,所述各随机接入掩码索引与RO索引之间的映射关系包括:在所述随机接入掩码索引等于11的情况下,所述RO索引包括9到12;在所述随机接入掩码索引等于12的情况下,所述RO索引包括13到16。
- 根据权利要求29所述的设备,其中,所述随机接入配置信息中还包括频域复用度和跳波束图样;所述跳波束图样用于指示每个波位的驻留时间;所述基于所述随机接入配置信息,确定随机接入机会RO资源,包括:基于所述PRACH配置索引指示的每个子帧在时域上的RO数量、所述频域复用度、以及所述跳波束图样,确定RO资源。
- 根据权利要求29所述的设备,其中,所述接收网络设备发送的随机接入配置信息,包括:接收网络设备通过系统消息发送的所述PRACH配置索引。
- 根据权利要求33所述的设备,其中,在连接态下接收所述网络设备发送的第二随机接入掩码索引,包括:在连接态下接收所述网络设备通过专用信令发送的第二随机接入掩码索引。
- 一种随机接入装置,其中,包括:获取单元,用于获取波束跳变信息;第一确定单元,用于基于所述波束跳变信息,确定物理随机接入信道PRACH配置索引;所述PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源;发送单元,用于发送随机接入配置信息;所述随机接入配置信息中包括所述PRACH配置索引。
- 一种随机接入装置,其中,包括:接收单元,用于接收网络设备发送的随机接入配置信息;所述随机接入配置信息中包括物理随机接入信道PRACH配置索引;所述PRACH配置索引指示在每个波位的驻留时间内存在至少一个随机接入机会RO资源;第二确定单元,用于基于所述随机接入配置信息,确定随机接入机会RO资源;接入单元,用于基于所述RO资源发起随机接入。
- 一种处理器可读存储介质,其中,所述处理器可读存储介质存储有程序,所述程序用于使所述处理器执行权利要求1至9任一项所述的方法,或执行权利要求10至19任一项所述的方法。
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| CN115835404A (zh) * | 2021-09-18 | 2023-03-21 | 北京佰才邦技术股份有限公司 | 一种随机接入信道时机的确定方法、装置、终端及设备 |
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