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WO2023051711A1 - Procédé d'envoi de préambule d'accès aléatoire, procédé de réception de préambule d'accès aléatoire, et appareil de communication - Google Patents

Procédé d'envoi de préambule d'accès aléatoire, procédé de réception de préambule d'accès aléatoire, et appareil de communication Download PDF

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Publication number
WO2023051711A1
WO2023051711A1 PCT/CN2022/122668 CN2022122668W WO2023051711A1 WO 2023051711 A1 WO2023051711 A1 WO 2023051711A1 CN 2022122668 W CN2022122668 W CN 2022122668W WO 2023051711 A1 WO2023051711 A1 WO 2023051711A1
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WIPO (PCT)
Prior art keywords
index
random access
value
preamble
access preamble
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PCT/CN2022/122668
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English (en)
Chinese (zh)
Inventor
宣一荻
郭志恒
谢信乾
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication of WO2023051711A1 publication Critical patent/WO2023051711A1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present application relates to the technical field of random access, and in particular to a method for sending and receiving a preamble of random access in a random access process, a method for receiving it, and a communication device.
  • Different types of terminal devices can be distinguished based on a random access preamble in the random access process, that is, the network device can determine the type of the terminal device according to the preamble sent by the terminal device. For example, different types of terminal devices have different preamble sets available, and the network device determines which type the terminal device is according to which set the preamble sent by the terminal device belongs to.
  • the network device configures the same number of preambles for each RO associated with a synchronization signal and a physical broadcast channel block (synchronization signal and (physical broadcast channel, PBCH) block, SSB).
  • a physical broadcast channel block synchronization signal and (physical broadcast channel, PBCH) block, SSB.
  • some ROs allow one type of terminal equipment to send preambles
  • some ROs allow multiple types of terminal equipments to send preambles.
  • the number of remaining preambles that can be used by other types of terminal devices on different ROs may be different.
  • each RO can be used for a limited number of preambles for a certain type of terminal equipment, which will damage the access performance of this type of terminal equipment, and there will also be residual ROs. preamble, which causes the preamble utilization rate to be low.
  • the present application provides a random access preamble sending method, receiving method and communication device, which are used to improve the utilization rate of the random access preamble and reduce the damage to the access performance of terminal equipment.
  • the first aspect provides a method for sending a random access preamble that can be executed by a first communication device.
  • the first communication device may be a communication device or a communication device capable of supporting the communication device to implement functions required by the method, such as a chip system.
  • the following description is made by taking the communication device as a terminal device as an example.
  • the method includes:
  • the terminal device determines (or selects) the first random access preamble from the target set corresponding to the first SSB, and sends the first random access preamble to the network device on the first RO associated with the first SSB.
  • the first SSB is associated with N ROs
  • the N ROs include a first group of ROs and a second group of ROs
  • the first group of ROs corresponds to the first preamble set
  • the second group of ROs corresponds to the second preamble set.
  • the first preamble index range corresponding to the preamble included in the first preamble set is different from the second preamble index range corresponding to the preamble included in the second preamble set.
  • the preambles included in the target set include preambles respectively included in the first preamble set and the second preamble set, and N is an integer greater than or equal to 2.
  • the preamble index ranges corresponding to the preamble sets corresponding to different RO groups may be different.
  • different RO groups may include different numbers of preambles.
  • the network device does not need to configure the preamble associated with each RO according to the RO with the least number of available preambles, which can increase the number of preambles available on the RO associated with an SSB, thereby improving the utilization of preambles and minimizing the impact on the access performance of terminal devices. damage.
  • the corresponding preamble set is configured for each RO in the RO group, different groups of ROs are allowed to configure different numbers of preambles, and the same RO group is configured with the same number of preambles.
  • the signaling overhead is less.
  • the embodiment of the present application does not limit the number of RO groups included in the N ROs associated with the first SSB.
  • the N ROs associated with the first SSB may include M RO groups, where M is less than or equal to N.
  • one RO group may include one RO, or may include multiple ROs.
  • the M RO groups correspond to one set respectively, that is, the M RO groups correspond to the M sets one-to-one. Any two sets in the M sets correspond to different index ranges.
  • the i-th index range corresponding to the i-th set in the M sets is different from the j-th index range corresponding to the j-th set in the M sets, and i is not equal to j.
  • the target set is the union of these M sets.
  • the first value is the number of preambles included in the first preamble set
  • the second value is the number of preambles included in the second preamble set
  • the first value and the second value are different.
  • the terminal device determines the first preamble set according to the first index and the first value, and determines the second preamble set according to the second index and the second value
  • the first index is the starting index in the range of the first preamble index
  • the second index is the starting index in the second preamble index range.
  • This solution takes the N ROs associated with the first SSB including the first group of ROs and the second group of ROs as an example, and provides a way to configure preamble sets with different index ranges for different RO groups, that is, network devices are different RO groups. Configure different numbers of preambles. In this way, the network device can configure the most available preambles for each RO group according to the actual remaining available preambles of each RO, so as to improve the utilization rate of preamble resources.
  • the sum of the first value and the first index is less than the maximum number of preambles available in the first group of ROs
  • the sum of the second value and the second index is less than the maximum number of preambles available in the second group of ROs the maximum number of .
  • the first value may be determined based on the first index and the maximum number of available preambles in the first group of ROs, so as to prevent invalid preambles configured by the network device for the first group of ROs.
  • the second value is determined based on the second index and the maximum number of available preambles in the second group of ROs.
  • the first index is smaller than the second index, and the first value is greater than the second value.
  • the first index and the second index may be indicated by the above indication information. Since the first index is smaller than the second index and the first value is greater than the second value, the format of the indication information is not limited and more flexible.
  • the method further includes: the terminal device receives indication information from the network device, where the indication information is used to indicate a third value, where the third value is the number of preambles corresponding to the N ROs.
  • the terminal device determines the first preamble set according to the third value and the first index, and determines the second preamble set according to the third value and the second index.
  • the first index is the starting index in the first preamble index range
  • the second index is the starting index in the second preamble index range.
  • This solution provides another way to configure preamble sets with different index ranges for different RO groups, that is, the network device configures the same number of preambles for all RO groups, but the terminal device can determine each RO group according to the preamble start index of each RO group The corresponding preamble collection. For example, the terminal device determines that the end index of the preamble of each RO group does not exceed the configured number of preambles at most, that is, determines that each RO group can use a maximum of preambles, and can also improve the utilization rate of preamble resources.
  • the network device configures the same number of preambles for all ROs, there is no need for the network device to determine the actual available preambles on each RO, which can reduce the processing complexity of the network device and is relatively simple.
  • the maximum index in the first preamble range is Imax-1; if the fourth value is less than or equal to Imax, the maximum index in the first preamble range is The fourth value minus 1, where Imax is the maximum number of preambles available in the first group of ROs, and the fourth value is the sum of the first index and the third value. That is, the maximum index in the first preamble index range is the minimum value between Imax-1 and the fourth value minus 1.
  • the terminal device can combine Imax to determine the maximum index in the first preamble index range, that is, the end index of the first preamble set, so that each Each RO group corresponds to more preambles to improve the utilization of preambles.
  • the maximum index in the first preamble index range is Lmax-1, and if Lmax is less than or equal to the fourth value, the maximum index in the first preamble index range Subtract 1 from the fourth value, where Lmax is the maximum number of preambles that can be transmitted by an RO, the fourth value is the sum of the first index and the third value, and Lmax is greater than Imax. That is, the maximum index in the first preamble index range is the minimum value among Lmax-1 and the fourth value minus 1.
  • the network device reserves some preambles for other purposes, even if the number of preambles configured by the network device for a certain RO exceeds the maximum number Imax of preambles allowed on the RO, as long as the preamble configured by the network device If the number does not exceed the maximum number Lmax of preambles that can be transmitted on the RO, then the terminal device can still use preambles beyond Imax. Therefore, the maximum index in the first preamble index range is determined in combination with Lmax, so as to further improve preamble utilization.
  • the method further includes: the terminal device receives indication information from the network device, where the indication information is used to indicate a third index, where the third index is an end index of a preamble available in the N ROs.
  • the terminal device determines the first preamble set according to the third index and the first index, and determines the second preamble set according to the second index and the third index, the first index is the starting index in the range of the first preamble index, and the second index is The starting index in the second preamble index range.
  • the network device configures the third index for all ROs, that is, the end indexes of the preamble sets configured for all ROs are the same. There is no need for the network device to determine the actual available preamble on each RO, which can reduce the processing complexity of the network device and is relatively simple.
  • the third index is greater than the first index, and the largest index in the range of the first preamble index is the third index; or, the third index is less than or equal to the first index, and the range of the first preamble index is an empty set. It can be understood that if the end index of the preamble configured by the network device is less than or equal to the start index of the preamble, then there is no preamble available on the RO. Therefore, the terminal device may compare the sizes of the third index and the first index to determine the range of the first preamble index, so as to ensure that the preamble included in the determined first preamble set is valid.
  • the third index is greater than the second index, and the largest index in the range of the second preamble index is the third index; or, the third index is less than or equal to the second index, and the range of the second preamble index is an empty set.
  • the terminal device may compare the sizes of the third index and the second index to determine the index range of the second preamble, and ensure that the determined preamble included in the second preamble set is valid.
  • the indication information is also used to indicate the first index and the second index.
  • the terminal device does not need to judge the first index and the second index by itself, which can reduce the processing complexity of the terminal device.
  • the second aspect provides a random access preamble sending method that can be executed by a first communication device.
  • the first communication device can be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip system.
  • the following description is made by taking the communication device as a network device as an example.
  • the method includes:
  • the network device sends indication information to the terminal device, where the indication information is used to indicate the target set.
  • the target set includes M sets, and the M sets are in one-to-one correspondence with the M RO groups included in the N ROs associated with the first SSB. Any two sets in the M sets correspond to different index ranges. For example, the i-th index range corresponding to the i-th set in the M sets is different from the j-th index range corresponding to the j-th set in the M sets, and i is not equal to j.
  • the target set is the union of these M sets.
  • the target set includes a first preamble set and a second preamble set
  • the first preamble set corresponds to the first group of ROs among the N ROs associated with the first SSB
  • the second preamble set corresponds to the second group of ROs among the N ROs .
  • the first preamble index range corresponding to the preamble included in the first random access preamble set is different from the second preamble index range corresponding to the preamble included in the second preamble set.
  • the network device receives the first preamble from the terminal device on the first RO among the N ROs, and the first preamble belongs to the target set.
  • the sum of the first value and the first index is less than the maximum number Imax of preambles available in the first group of ROs, where the first index is the starting index in the first preamble index range .
  • the sum of the second value and the second index is less than the maximum number Imax of preambles available in the second group of ROs, where the second index is the starting index in the second preamble index range.
  • the first index is smaller than the second index, and the first value is greater than the second value.
  • the indication information is used to indicate a third value, where the third value is the number of preambles corresponding to the N ROs.
  • the maximum index in the first preamble index range is the minimum value of Imax-1 and the fourth value minus 1
  • Imax is the maximum number of preambles available in the first group of ROs, where , the fourth value is the sum of the first index and the third value.
  • the maximum index in the first preamble index range is the minimum value of Lmax-1 and the fourth value minus 1
  • Lmax is the maximum number of preambles that can be transmitted by an RO, where the fourth value is the first index and the sum of the third value.
  • the maximum index in the first preamble index range is Imax-1, and if the fourth value is less than or equal to Imax, the maximum index in the first preamble index range Subtract 1 from the fourth value; wherein, Imax is the maximum number of preambles available in the first group of ROs, the fourth value is the sum of the first index and the third value, and Lmax is greater than Imax.
  • the maximum index in the first preamble index range is Lmax-1; if Lmax is less than or equal to the fourth value, the maximum index in the first preamble index range is the fourth value minus 1 , where Lmax is the maximum number of preambles that can be transmitted by an RO, where the fourth value is the sum of the first index and the third value, and Lmax is greater than Imax.
  • the indication information is used to indicate a third index
  • the third index is an end index of a preamble available in the N ROs.
  • the third index is greater than the first index, and the largest index in the first preamble index range is the third index, or, the third index is less than or equal to the first index, and the first preamble index range is empty set; wherein, the first index is the starting index in the first preamble index range.
  • the third index is greater than the second index, and the maximum index in the second preamble index range is the third index, or, the third index is less than or equal to the second index, and the second preamble index range is an empty set; wherein, the second index is the starting index in the second preamble index range.
  • the indication information is also used to indicate the first index and the second index.
  • the embodiment of the present application provides a communication device, the communication device has the function of implementing the behavior in the method example of the first aspect above, and the beneficial effects can be referred to the description of the first aspect, which will not be repeated here.
  • the communication device may be the first terminal device in the first aspect, or the communication device may be a device capable of supporting the first terminal device in the first aspect to implement the functions required by the method provided in the first aspect, such as a chip or system on a chip.
  • the communication device includes corresponding means or modules for performing the method of the first aspect.
  • the communication device includes a processing unit (sometimes also called a processing module or a processor) and/or a transceiver unit (sometimes also called a transceiver module or a transceiver).
  • a processing unit sometimes also called a processing module or a processor
  • a transceiver unit sometimes also called a transceiver module or a transceiver.
  • the processing unit may be configured to determine (or select) the first preamble from the target set corresponding to the first SSB.
  • the transceiving unit may be configured to send the first preamble to the network device on the first RO associated with the first SSB.
  • the first SSB is associated with N ROs
  • the N ROs include M RO groups, N is an integer greater than or equal to 2, and M is less than or equal to N.
  • the M RO groups are in one-to-one correspondence with the M sets. Index ranges corresponding to any two sets in the M preamble sets are different.
  • the i-th index range corresponding to the i-th set in the M sets is different from the j-th index range corresponding to the j-th set in the M sets, and i is not equal to j.
  • the target set is the union of these M sets.
  • the N ROs include a first group of ROs and a second group of ROs, the first group of ROs corresponds to the first preamble set, and the second group of ROs corresponds to the second preamble set.
  • the first preamble index range corresponding to the preamble included in the first preamble set is different from the second preamble index range corresponding to the preamble included in the second preamble set, and the preamble included in the target set is the preamble included in the first preamble set and the second preamble set, N is an integer greater than or equal to 2.
  • the embodiment of the present application provides a communication device, the communication device has the function of implementing the behavior in the method example of the second aspect above, and the beneficial effects can be referred to the description of the second aspect, which will not be repeated here.
  • the communication device may be the second terminal device in the second aspect, or the communication device may be a device capable of supporting the second terminal device in the second aspect to implement the functions required by the method provided in the second aspect, such as a chip or system on a chip.
  • the communication device includes corresponding means or modules for performing the method of the second aspect.
  • the communication device includes a processing unit (sometimes also called a processing module or a processor) and/or a transceiver unit (sometimes also called a transceiver module or a transceiver).
  • a processing unit sometimes also called a processing module or a processor
  • a transceiver unit sometimes also called a transceiver module or a transceiver.
  • the processing unit is configured to determine indication information, where the indication information is used to indicate a target set, where the target set includes M sets, and the M sets correspond one-to-one to the M RO groups included in the N ROs associated with the first SSB. Any two sets in the M sets correspond to different index ranges. For example, the i-th index range corresponding to the i-th set in the M sets is different from the j-th index range corresponding to the j-th set in the M sets, and i is not equal to j.
  • the target set is the union of these M sets. For example, the target set includes a first preamble set and a second preamble set.
  • the first preamble set corresponds to the first group of ROs among the N ROs associated with the first SSB
  • the second preamble set corresponds to the second group of ROs among the N ROs.
  • the first preamble index range corresponding to the preamble included in the first preamble set is different from the second preamble index range corresponding to the preamble included in the second preamble set.
  • the transceiver unit is configured to send indication information to the terminal device, and receive a first preamble from the terminal device on a first RO among the N ROs, where the first preamble belongs to the target set.
  • the embodiment of the present application provides a communication device, which may be the communication device in the third aspect or the fourth aspect in the above embodiments, or the communication device set in the third aspect or the fourth aspect chip or system-on-a-chip.
  • the communication device includes a communication interface, a processor, and optionally, a memory.
  • the memory is used to store computer programs or instructions or data
  • the processor is coupled with the memory and the communication interface, and when the processor reads the computer programs or instructions or data, the communication device executes the method described above in the embodiment of the terminal device The executed method, or execute the method executed by the network device in the foregoing method embodiments.
  • the embodiment of the present application provides a communication device, where the communication device includes an input and output interface and a logic circuit.
  • the input and output interfaces are used to input and/or output information.
  • the logic circuit is used to execute the method described in any one of the first aspect or the second aspect.
  • an embodiment of the present application provides a chip system, the chip system includes a processor, and may further include a memory and/or a communication interface, for implementing the method described in the first aspect or the second aspect.
  • the chip system further includes a memory, configured to store computer programs.
  • the system-on-a-chip may consist of chips, or may include chips and other discrete devices.
  • an embodiment of the present application provides a communication system, where the communication system includes the communication device described in the third aspect and the communication device described in the fourth aspect.
  • the communication system includes the communication device in the fifth aspect for implementing the method in the first aspect and the communication device in the fifth aspect for implementing the method in the second aspect.
  • the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed, the above-mentioned first aspect or any one of the second aspect can be realized. method.
  • a computer program product including: computer program code, when the computer program code is executed, the method in any one of the first aspect or the second aspect above is executed implement.
  • FIG. 1 is a schematic diagram of a network architecture applied in an embodiment of the present application
  • FIG. 2 is a schematic diagram of a preamble set of different types of terminal devices on an RO provided by an embodiment of the present application;
  • FIG. 3 is a schematic diagram of preamble sets corresponding to two ROs associated with an SSB index provided in the embodiment of the present application;
  • FIG. 4 is a schematic diagram of preamble sets corresponding to four ROs associated with an SSB provided in the embodiment of the present application;
  • FIG. 5 is a schematic flowchart of a random access method provided in an embodiment of the present application.
  • FIG. 6 is a first schematic diagram of the preamble sets corresponding to the four ROs associated with the first SSB provided in the embodiment of the present application;
  • FIG. 7 is a second schematic diagram of the preamble sets corresponding to the four ROs associated with the first SSB provided in the embodiment of the present application;
  • FIG. 8 is a third schematic diagram of the preamble sets corresponding to the four ROs associated with the first SSB provided in the embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 10 is another schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of an exemplary communication device provided by an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • a network device is an access device for a terminal device to wirelessly access the mobile communication system, for example including a radio access network (radio access network, RAN) device, such as a base station (for example, an access point).
  • RAN radio access network
  • the network device can also refer to the device that communicates with the terminal on the air interface, such as other possible terminal devices; and for example, the network device in a vehicle to everything (V2X) technology is a road side unit (road side unit, RSU).
  • the base station can be used to convert received air frames to and from Internet Protocol (IP) packets and act as a router between the terminal and the rest of the radio access network, which can include an IP network .
  • IP Internet Protocol
  • the RSU can be a fixed infrastructure entity supporting V2X applications, and can exchange messages with other entities supporting V2X applications.
  • the network device can also coordinate the attribute management of the air interface.
  • the network equipment may include an evolved base station (evolved Node B) in a long term evolution (long term evolution, LTE) system or an advanced long term evolution (long term evolution-advanced, LTE-A), which may also be referred to as (eNB or eNB) for short.
  • eNB evolved base station
  • eNB advanced long term evolution
  • next generation node B next generation node B
  • gNB next generation node B
  • NR new wireless
  • wireless fidelity wireless-fidelity, Wi-Fi
  • network devices can be relay stations, vehicle-mounted devices, and future evolved public land mobile network (Public Land Mobile Network, PLMN) devices, devices in device-to-device (D2D) networks, Devices in a machine to machine (M2M) network, devices in an IoT network, etc.
  • PLMN Public Land Mobile Network
  • D2D device-to-device
  • M2M machine to machine
  • the embodiment of the present application does not limit the specific technology and specific device form adopted by the wireless network device.
  • the network equipment may correspond to eNB in the fourth generation mobile communication technology (the fourth generation, 4G) system, and correspond to gNB in the 5G system.
  • the base station in this embodiment of the present application may include a centralized unit (centralized unit, CU) and a distributed unit (distributed unit, DU), and multiple DUs may be centrally controlled by one CU.
  • CU and DU can be divided according to the protocol layer functions of the wireless network they have. For example, the functions of the packet data convergence protocol (packet data convergence protocol, PDCP) layer and the protocol layer above are set in the protocol layer below the CU and PDCP, such as the wireless link Functions such as the radio link control (radio link control, RLC) layer and the medium access control (medium access control, MAC) layer are set in the DU.
  • packet data convergence protocol packet data convergence protocol
  • RLC radio link control
  • MAC medium access control
  • the radio frequency device can be remote, not placed in the DU, or integrated in the DU, or partially remote and partially integrated in the DU, which is not limited in this embodiment of the present application.
  • the control plane (control plan, CP) and the user plane (user plan, UP) of the CU can also be separated and divided into different entities for implementation, respectively being the control plane CU entity (CU-CP entity) And user plane CU entity (CU-UP entity).
  • the signaling generated by the CU can be sent to the terminal device through the DU, or the signaling generated by the UE can be sent to the CU through the DU.
  • the DU can directly transmit the signaling to the UE or CU through protocol layer encapsulation without parsing the signaling.
  • the CU is used as a network device on the RAN side.
  • the CU can also be used as a network device on the core network (core network, CN) side, which is not limited in this application.
  • the network device may also include a core network device, and the core network device includes, for example, an access and mobility management function (access and mobility management function, AMF) or a user plane function (user plane function, UPF).
  • AMF access and mobility management function
  • UPF user plane function
  • the device for realizing the function of the network device may be a network device, or a device capable of supporting the network device to realize the function, such as a chip system, and the device may be installed in the network device.
  • the technical solution provided by the embodiment of the present application the technical solution provided by the embodiment of the present application is described by taking the network device as an example for realizing the function of the network device.
  • the terminal device is a device with a wireless transceiver function, which can send signals to or receive signals from network devices.
  • the terminal device may be called user equipment (user equipment, UE), and sometimes also called terminal, access station, UE station, remote station, wireless communication device, or user device, etc.
  • the terminal device is used to connect people, objects, machines, etc., and can be widely used in various scenarios, including but not limited to the following scenarios: cellular communication, D2D, V2X, machine-to-machine/machine-type communication (machine-to-machine /machine-type communications, M2M/MTC), Internet of things (Internet of things, IoT), virtual reality (virtual reality, VR), augmented reality (augmented reality, AR), industrial control (industrial control), unmanned driving ( Self driving), remote medical, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, drones, robots and other scenarios. That is to say, the terminal device in this embodiment of the present application may be the device involved in one or more scenarios above.
  • the terminal device may also be a wearable device, such as glasses, gloves, watches, clothing, shoes, and the like.
  • the terminal equipment may also include a relay (relay).
  • the terminal equipment may be customer premise equipment (customer premise equipment, CPE), and the CPE may receive signals from network equipment and forward the signals to other terminal equipment.
  • CPE customer premise equipment
  • all devices capable of performing data communication with the base station can be regarded as terminal devices.
  • the various terminal devices described above, if they are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be considered as vehicle-mounted terminal devices.
  • Vehicle-mounted terminal devices are also called on-board units (OBU), for example. .
  • a terminal device may refer to a device for implementing a terminal function, or may be a device capable of supporting a terminal device to implement the function, such as a chip system, and the device may be installed in the terminal device.
  • the terminal can also be a vehicle detector.
  • the system-on-a-chip may be composed of chips, or may include chips and other discrete devices.
  • At least one means one or more, and “multiple” means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural.
  • the character "/” generally indicates that 44.
  • the associated objects before and after are a kind of "or” relationship.
  • At least one of the following” or similar expressions refer to any combination of these more than ten items, including any combination of single or plural items.
  • At least one item (piece) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple .
  • the ordinal numerals such as “first” and “second” mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, timing, priority or priority of multiple objects. Importance.
  • the first preamble set and the second preamble set are only for distinguishing different sets, and do not represent the difference in priority or importance of the two sets.
  • "if” and “if” can be replaced, and unless otherwise specified, "when” and “in the case of” can be replaced.
  • the preamble may also be referred to as a random access request, a preamble, a preamble carried by a physical random access channel (physical random access channel, PRACH), a RACH preamble, a message 1 (message 1, Msg1), or a message A (message A, MsgA) and so on.
  • the SSB-associated RO can also be understood as SSB and RO have a mapping relationship, unless otherwise specified, “SSB-associated RO” and “SSB-mapped RO” can be replaced. Similarly, unless otherwise specified, "SSB association preamble" and "SSB mapping preamble” can be replaced.
  • the technical solution provided by the embodiments of the present application may be applied to a 5G mobile communication system, such as an NR system, or to an LTE system, or may also be applied to a next generation mobile communication system or other similar communication systems. Or it can also be applied to the next generation mobile communication system or other similar communication systems, which is not specifically limited.
  • FIG. 1 is a network architecture applied in the embodiment of the present application.
  • network equipment and 6 terminal equipments in Fig. 1 can be cell phone, smart phone, portable computer, handheld communication equipment, handheld computing equipment, satellite radio device, global positioning system, PDA and/or be used for Any other suitable device that communicates over a wireless communication system and can be connected to the network device.
  • These six terminal devices are all capable of communicating with network devices.
  • the number of terminal devices in FIG. 4 is just an example, and may be less or more.
  • FIG. 1 is only a schematic diagram, and the embodiment of the present application does not limit the types of equipment included in the communication system.
  • the communication system may also include other network equipment, such as wireless relay equipment, wireless backhaul equipment, etc. .
  • the terminal device establishes a connection with the network device through a random access process.
  • the terminal device may send a preamble to the network device to initiate the random access process.
  • the random access procedure includes a contention-based random access procedure and a non-contention-based random access procedure. It can be understood that, compared with the contention-based random access process, in the non-contention-based random access process, the network device sends preamble allocation information to the terminal device. Since the preamble is allocated by the network device, there is no need for the terminal device to choose independently, which can avoid competition with other terminal devices.
  • the contention-based random access process mainly includes 4 steps, also called 4-step random access process. In addition to the contention-based random access procedure and the non-contention-based random access procedure, there is another random access procedure.
  • the random access process mainly includes 2 steps, which is also called a 2-step random access process.
  • the terminal device sends a preamble (also called message 1 (message1, msg1)) to the network device to initiate the random access process.
  • message 1 messagessage1, msg1
  • the terminal device sends a message to the network device to initiate the random access process.
  • the terminal device sends a message A to the network device, and the message A includes a preamble and first data information.
  • NR systems support network devices sending SSBs on multiple beams.
  • the network device can support up to 8 SSBs, that is, the network device can send 8 SSBs to the terminal device.
  • the terminal device may select one SSB from the multiple SSBs, and send a preamble based on the beam of the SSB.
  • the network device can select the SSB with the highest received power (for example, the first SSB) from multiple SSBs, and the terminal device can select a preamble from the preambles associated with the first SSB, and on the RO associated with the selected preamble Send the selected preamble.
  • the mapping relationship between the SSB and the RO is specified, and the network device can determine which SSB beam the terminal device selects to send the preamble through the RO of the preamble sent by the terminal device.
  • the mapping relationship between SSB and RO is configured by the network device through high-level parameters, and the high-level parameters mainly include "msg1-FDM" and "ssb-perRACH-OccasionAndCB-PreamblesPerSSB".
  • the parameter msg1-FDM mainly defines multiple ROs on a time-frequency resource, for example, there are P ROs, and P is an integer greater than or equal to 1.
  • the parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB mainly defines that N SSBs are mapped (also referred to as associations) to one RO, and R preambles are mapped to one SSB.
  • N when N is less than 1, 1 SSB is mapped to 1/N ROs; when N is greater than 1, N SSBs are mapped to 1 RO (it can also be considered that 1 SSB is mapped to 1/N ROs).
  • Each SSB is mapped to multiple consecutive preambles on the RO associated with the SSB.
  • a maximum of 64 preambles can be transmitted in an RO in the way of code division multiplexing.
  • the network device may reserve some preambles for special processes in advance, the network device will configure the maximum number of preambles that can be used in an RO through the high-level parameter "totalNumberOfRA-Preambles", for example, less than 64. It can also be considered that the number of preambles used by an RO to distinguish different types of terminal devices is less than 64, or even less.
  • the SSB is mapped to the RO based on the following order: First, it is mapped in the order in which the preamble sequence number in one RO increases; secondly, it is mapped in the order in which the frequency domain resource index of at least one RO that is multiplexed in the frequency domain increases; The time-domain resource index of at least one RO time-division multiplexed in the slot is mapped in the order of increasing; finally, the index is mapped in the increasing order of the PRACH time slot.
  • Some mechanisms propose to distinguish different types of terminal devices based on the preamble in the random access process that is, the network device can determine the type of the terminal device according to the preamble sent by the terminal device.
  • the preamble in the random access process can be used to distinguish whether the terminal device is a terminal device based on 4-step random access or a terminal device based on 2-step random access. The following describes how to distinguish different types of terminal devices based on the preamble.
  • a network device can configure a preamble set for different types of terminal devices on the same RO, and the preamble sets corresponding to different types of terminal devices have no intersection.
  • the terminal device may select and send a preamble from the preamble set corresponding to the type of the terminal device.
  • the network device can determine which preamble set the preamble belongs to according to the index of the preamble, and then determine which type of terminal device the preamble comes from.
  • FIG. 2 which is a schematic diagram of preamble sets of different types of terminal devices on an RO.
  • Figure 1 takes the preamble set corresponding to RO1 as an example.
  • FIG. 2 which is a schematic diagram of preamble sets of different types of terminal devices on an RO.
  • Figure 1 takes the preamble set corresponding to RO1 as an example.
  • preamble set 1 of the first type of terminal device includes preambles with indexes from 0 to 20, and preamble set 2 of the second type of terminal device includes preambles with indexes from 21 to 40.
  • a terminal device selects a preamble from the preamble set 1, such as preamble10.
  • the network device determines that preamble10 belongs to preamble set 1, thereby determining that the type of the terminal device is type 1. That is, after receiving the preamble from the terminal device, the network device can determine the type of the terminal device according to which preamble set the preamble comes from.
  • the network device can configure a certain number of preambles for each type of terminal device through the high layer parameter "ssb-perRACH-OccasionAndCB-PreamblesPerSSB". For example, the network device configures the number of available preambles for the first type of terminal equipment as R, and configures the number of available preambles for the second type of terminal equipment as Q.
  • the corresponding preamble set can be determined according to the number of configured preambles and the starting index (number) of available preambles. Wherein, the starting index of the preamble available to each type of terminal device may be configured (or pre-configured) by the network device, or may be determined by the terminal device itself.
  • the start index of the preamble available to the terminal device of type 1 is 0, and the start index of the preamble available to the terminal device of the second type is R.
  • the preamble set of the first type of terminal device includes preambles with indexes from 0 to R-1, and the preamble of the second type of terminal device includes preambles with indexes from R to R+Q-1.
  • the network device can configure a certain type of terminal devices to send preambles on all or part of the ROs associated with an SSB .
  • the RO that can be used for a certain type of terminal device to send preamble is also called the available RO of a certain type of terminal device.
  • a certain type of terminal device sends a preamble on a part of ROs associated with an SSB. It can be understood that ROs other than this part of ROs among multiple ROs associated with an SSB do not allow this type of terminal device to send a preamble.
  • FIG. 3 a schematic diagram of preamble sets corresponding to two ROs associated with an SSB index.
  • FIG. 3 takes the two ROs as RO1 and RO2 as an example.
  • the first type of terminal device corresponds to preamble set 1
  • the second type of terminal device corresponds to preamble set 2.
  • RO1 is used for the second type of terminal equipment to send preambles, that is, the second type of terminal equipment is not allowed to send preambles on RO2.
  • the first type of terminal equipment can send the preamble on RO1 or RO2.
  • ROs can be used for one type of terminal equipment to send preambles, and some ROs can be used for multiple types of terminal equipments to send preambles.
  • An RO that allows multiple types of terminal devices to send a preamble is also called a shared (shared) RO. It can be understood that the preamble available to a certain type of terminal device refers to the configuration of preambles for all ROs associated with an SSB that allow this type of terminal device to be used.
  • the network device configures a preamble with the same index range on each RO among all available ROs of the type of terminal device. That is to say, the start index and number of preambles that can be used by each available RO for this type of terminal device are the same.
  • some ROs allow one type of terminal device to send preambles
  • some ROs allow multiple types of terminal devices to send preambles, which may result in different numbers of remaining preambles on different ROs, that is, different ROs
  • the number of preambles (or index ranges) that can be configured for other types of terminal devices is different. For example, please refer to FIG. 3 again. In FIG.
  • RO2 allows the second type of terminal equipment to send preambles
  • RO1 allows the first type of terminal equipment and the second type of terminal equipment to send preambles.
  • the preambles that can be configured for other types of terminal devices on RO1 are less than the preambles that can be configured for other types of terminal devices on RO2.
  • the types of terminal devices that are allowed to send preambles on different ROs are different, and the number of preambles available to different types of terminal devices is different, which will also cause the number of remaining preambles on different ROs to be different.
  • the first part of ROs allows the first type of terminal device and the third type of terminal device to send preambles
  • the second part of ROs allows the second type of terminal devices and the third type of terminal devices to send preambles.
  • the network device can be configured on the first part of RO and the second part of RO The number of preambles (or index ranges) for the third type of terminal devices is different.
  • the network device When the number of preambles (or index ranges) that can be configured for other types of terminal devices on different ROs is different, for a type of terminal device, if the network device still configures the same index range for each available RO of this type of terminal device preamble, then the network device will configure the number of preambles on each available RO according to the RO with the least number of remaining available preambles among all available ROs of this type of terminal device. This will lead to an insufficient number of preambles configured by the network device for this type of terminal device, that is, fewer preambles are actually available for this type of terminal device, thereby impairing the access performance of this type of terminal device.
  • the network device configures the number of preambles on each available RO according to the RO with the least number of remaining available preambles, but the number of preambles (or index ranges) that can be configured for this type of terminal device on different ROs is different, this will cause some ROs. There are remaining preambles that have not been configured, that is, the utilization rate of preambles on this part of ROs is low. It can be understood that, in this paper, two preamble collections with the same index range refer to the same starting index and number of preambles included in the two preamble collections.
  • Figure 4 is a schematic diagram of the preamble sets corresponding to the four ROs associated with an SSB.
  • the four ROs are RO1, RO2, RO3 and RO4.
  • RO1, RO2, RO3, and RO4 can all be used for the first type of terminal equipment to send preambles
  • RO1 and RO 3 can be used for the second type of terminal equipment to send preambles.
  • the preamble configured by the network device for the first type of terminal device is set 1 (ie, preamble set 1)
  • the preamble configured by the network device for the second type of terminal device is set 2 (ie, preamble set 2).
  • the dotted line in Figure 4 indicates the maximum number of preambles allowed to be configured on each RO.
  • set 1 includes preambles with indices from 0 to 30, and set 2 includes preambles with indices from 31 to 45.
  • the remaining 4 preambles ie preamble46 ⁇ preamble49
  • the remaining 19 preambles ie preamble31 ⁇ preamble49
  • RO2 and RO4 the number of preambles for the terminal device should be the RO with the least number of remaining preambles for the network device.
  • RO1-RO4 can be used for the third type of terminal equipment to send preambles.
  • the network device will configure the preamble set of the third type of terminal device to include 4 preambles (ie preamble46-preamble49).
  • preamble46-preamble49 For RO2 and RO4, there are still 15 preambles (ie, preamble36-preamble49) available, and the preamble utilization rate is low.
  • the third type of terminal device there are 4 available preambles in total, that is, the available preambles for the third type of terminal device are less, resulting in impaired access performance of the third type of terminal device.
  • the network device can be configured with the number of preambles and the start index of the preamble of various types of terminal devices, although the number of available preambles and the start index of the preamble can be reasonably configured according to the remaining preamble of each RO, which can improve the utilization rate of the preamble.
  • the signaling for configuring the preamble of one RO occupies at least 8 bits. If there are many ROs, the signaling overhead for configuring the number of preambles for each RO is relatively large.
  • the embodiment of the present application provides a solution, in which, for the same type of terminal device, different ROs can be configured with preambles in different index ranges.
  • the network device does not need to configure the preamble associated with each RO according to the RO with the least number of available preambles, which can increase the number of preambles available on the RO associated with an SSB, thereby improving the utilization of preambles and minimizing the impact on the access performance of terminal devices. damage.
  • the process of sending a preamble by a certain type of terminal device will be introduced in combination with the foregoing embodiments and related drawings.
  • the application of the preamble sending method and receiving method provided by the embodiment of the present application to the network architecture shown in FIG. 1 is taken as an example.
  • the method may be performed by two communication devices, such as a first communication device and a second communication device.
  • the first communication device may be a terminal device or a communication device capable of supporting the terminal device to implement the functions required by the method, and of course may also be other communication devices, such as a chip system.
  • the second communication device may be a network device or a communication device capable of supporting the network device to implement the functions required by the method, and of course it may also be other communication devices, such as a chip system. And there is no limitation on the implementation manners of the first communication device and the second communication device.
  • the first communication device may be a terminal device, and the second communication device may be a network device; or the first communication device may be a communication device capable of supporting the terminal device to implement the functions required by the method, and the second communication device may be a network device, etc. .
  • the network device can determine the type of the terminal device through the preamble sent by the terminal device, that is, the preamble in the random access process can be used to distinguish the type of the terminal device.
  • the embodiment of the present application does not limit the classification of terminal devices.
  • terminal devices can be divided into two types: terminal devices based on a 4-step random access process and terminal devices based on a 2-step random access process.
  • the first type of terminal device may be a terminal device based on a 4-step random access process, relatively speaking, the second type of terminal device is a terminal device based on a 2-step random access process.
  • terminal devices may be classified into legacy (legacy) terminal devices and low-complexity or low-capability (REDuced CAPability, REDCAP) terminal devices according to their complexity or capabilities.
  • the first type of terminal device may be a legacy terminal device, relatively speaking, the second type of terminal device may also be a REDCAP terminal device.
  • terminal devices can be divided into non-coverage-limited terminal devices and coverage-limited terminal devices, and coverage-limited terminal devices can be those whose reference signal received power (Reference Signal Received Power, RSRP) of the downlink reference path loss is less than
  • RSRP Reference Signal Received Power
  • the non-coverage-limited terminal device may be a terminal device whose RSRP of the downlink reference path loss is greater than the preset threshold.
  • the coverage-limited terminal device can also be regarded as a terminal device requesting Msg3 repetition, and the non-coverage-limited terminal device can be regarded as a terminal device not requesting Msg3 repetition. If the terminal device can be a terminal device requesting to repeat Msg3, the preamble configured by the network device for the terminal device can be considered as a terminal device for sending Msg3 with a payload less than a preset threshold.
  • the method for sending and receiving a preamble provided by the embodiment of the present application is executed by a terminal device and a network device as an example.
  • the terminal equipment described below may be the terminal equipment in the network architecture shown in Figure 1
  • the network equipment described below may be the network equipment described in Figure 1 network devices in the network architecture shown.
  • the embodiment of the present application is only performed by a terminal device and a network device as an example, and is not limited to this terminal device.
  • the terminal device hereinafter may be regarded as a certain type of terminal device, and the specific type of terminal device is not limited by this embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a method for sending and receiving a random access preamble provided by an embodiment of the present application.
  • the network device sends indication information to the terminal device.
  • the terminal device receives the indication information from the network device, where the indication information is used to indicate a target set corresponding to the first SSB.
  • the target set can be regarded as a set composed of preambles associated with an SSB that can be used by this type of terminal equipment, and can also be called a target preamble set.
  • the first SSB is associated with N ROs
  • the target set is a set composed of preambles respectively corresponding to the N ROs.
  • the N ROs here are the ROs allowed to be used by this type of terminal device among all ROs associated with the first SSB. It can be understood that N is an integer greater than or equal to 2.
  • the first SSB is associated with K ROs, and the ROs allowed to be used by this type of terminal equipment among the K ROs are N ROs.
  • N may be equal to K, that is, the K ROs associated with the first SSB are all ROs that can be used by the terminal device.
  • the terminal device may send the preamble on one of the K ROs associated with the first SSB.
  • N may be smaller than K, that is, N ROs among the K ROs associated with the first SSB are ROs that the terminal device can use.
  • the terminal device can send a preamble on one of the N ROs.
  • the terminal device can be a terminal device that requests to repeat Msg3, and the target set can be used by the terminal device to send Msg3 with a payload smaller than the preset threshold, that is, the terminal device that requests to repeat Msg3 can use the preamble in the target set to send Msg3 with a payload smaller than the preset threshold .
  • the network device can configure the available preamble for the terminal device in units of RO groups, allowing the same preamble index ranges corresponding to ROs in the same RO group, and the preamble index ranges corresponding to different RO groups can be different.
  • the N ROs associated with the first SSB include M RO groups, and one RO group may include one RO or multiple ROs.
  • M may be smaller than N.
  • Each of the M RO groups corresponds to a preamble set, that is, the M RO groups correspond to the M preamble sets one by one.
  • the embodiment of the present application allows index ranges corresponding to any two preamble sets in the M preamble sets to be different.
  • the target set is the union of the preamble sets corresponding to the M RO groups.
  • the index range of the preamble collection refers to the range composed of the minimum index and the maximum index of the preamble included in the preamble collection.
  • the network device may determine M RO groups according to the N ROs.
  • the network device determines M RO groups according to the N ROs, which can also be understood as, the network device obtains M RO groups according to the N ROs, or the network device configures M RO groups according to the N ROs.
  • the network device may determine M RO groups according to the number of remaining available preambles on each RO among the N ROs. For example, multiple ROs with the same remaining available preamble are divided into one RO group, and the index ranges of the remaining available preambles on different RO groups are different. Since the index ranges of the preamble sets corresponding to different RO groups are allowed to be different, the network device may determine multiple ROs with the same remaining available preamble as one RO group.
  • the network device can configure a preamble for initial access for a certain type of terminal device according to the actual number of remaining available preambles of each RO group, thereby improving the utilization rate of preamble resources.
  • the network device configures available preambles for a certain type of terminal equipment according to the actual number of remaining available preambles of each RO group, for example, all the actual remaining available preambles of each RO group are configured for this type of terminal equipment, so that this type More preambles are available for terminal devices, which improves the performance of such terminal devices accessing the network.
  • the first SSB is associated with 8 ROs, and these 8 ROs are RO0-RO7.
  • the index range of the preamble available on RO0 and RO1 is [40,60]
  • the index range of the preamble available on RO2 and RO3 is [45,60]
  • the index range of the preamble available on RO4 and RO5 is [50,60]
  • the index range of the preamble available on RO6 and RO7 is [35,60].
  • the network device can determine RO0 and RO1 as a group, such as RO group 0.
  • RO2 and RO3 form RO group 1
  • RO4 and RO5 form RO group 2
  • RO6 and RO7 form RO group 3.
  • the network device can configure preamble set 0 for RO group 0, and the index range corresponding to preamble set 0 can be [40,60]. Similarly, the network device can configure preamble set 1 for RO group 1, and the index range corresponding to preamble set 1 is [45,60]. The network device can configure preamble set 2 for RO group 2, and the index range corresponding to preamble set 2 is [50,60]. The network device can configure preamble set 3 for RO group 3, and the index range corresponding to preamble set 3 is [35,60].
  • the preamble (that is, the target set) that the terminal device can use is all the ROs allowed to be used by the terminal device on the 8 ROs associated with the first SSB, and the network device is the preamble configured for this type of terminal device. If the 8 ROs associated with the first SSB are all allowed to be used by this type of terminal equipment, then the target set is all the preambles included in the preamble set 0-preamble set 3 that are available on the 8 ROs associated with the first SSB, namely [35 ,60] preamble in the range.
  • the N ROs associated with the first SSB include two groups of ROs.
  • the N ROs associated with the first SSB include the first group of ROs and the second group of ROs
  • the first group of ROs corresponds to the first preamble set (hereinafter referred to as the first preamble set for short)
  • the second group of ROs corresponds to the second preamble set (herein referred to as the second preamble set for short).
  • the first preamble index range corresponding to the first preamble set may be different from the second preamble index range corresponding to the second preamble set.
  • the target set is a union set of the first preamble set and the second preamble set.
  • FIG. 6 is a schematic diagram of the preamble sets corresponding to the four ROs associated with the first SSB.
  • preamble set 1 is a preamble set configured by a network device for a certain type of terminal device
  • preamble set 2 is a preamble set configured by a network device for another type of terminal device .
  • preamble set 1 includes preambles with indexes from 0 to R-1
  • preamble set 2 includes preambles with indexes from R to Q+R-1.
  • the network device may determine RO1 and RO as a group, for example, a first group of ROs, and determine RO2 and RO4 as a group, for example, a second group of ROs.
  • the network device can configure the remaining Z1 preambles on the first group of ROs for the terminal device, that is, configure preambles with an index range from R+Q to R+Q+Z1-1 for the first group of ROs.
  • the network device may also configure Z2 preambles in the second group of ROs for the terminal device, that is, configure a preamble with an index range from R+Q to R+Q+Z2-1 for the second group of ROs.
  • the actual preamble available to the terminal device is Z2 preambles.
  • the network device configures the same number of preambles for each RO, that is, Z1 preambles.
  • the terminal device can use more preambles. Therefore, the performance of the terminal device accessing the network can be improved.
  • the remaining Z2 preambles that are actually available are configured to the terminal device. Compared with configuring Z1 preambles among the Z2 preambles to the terminal device, the actual available preambles are fully utilized, that is, Improved preamble utilization.
  • the network device After the network device determines the target set of a certain type of terminal device, it can indicate the target set to this type of terminal device through indication information. For example, the network device sends indication information to the terminal device, where the indication information may indicate a target set.
  • the indication information may be carried in downlink control information (DCI), may also be carried in radio resource control (radio resource control, RRC) signaling, or may also be carried in media access control (media access control, MAC) ) control element (control element, CE), which is not limited in this embodiment of the present application.
  • DCI downlink control information
  • RRC radio resource control
  • media access control media access control
  • CE control element
  • the N ROs associated with the first SSB include M RO groups as an example.
  • the preamble set corresponding to the i-th RO group among the M RO groups is called the i-th set, and the index range of the i-th set is called is the i-th index range.
  • the second group of ROs corresponds to the second preamble set, and the index range of the second preamble set is the second preamble index range.
  • the starting index in the i-th index range may be referred to as the i-th index.
  • the starting index in the first preamble index range is the first index
  • the starting index in the second preamble index range is the second index as an example.
  • the first index is R+Q
  • the second index is R.
  • the indication information may indicate M values corresponding to M RO groups one-to-one.
  • the value corresponding to any one of the M RO groups is the number of preambles included in the preamble set corresponding to the RO group. That is, the i-th value among the M values is the number of preambles included in the preamble set corresponding to the i-th RO group among the M RO groups.
  • the i-th value among the M values is the number of preambles included in the preamble set corresponding to a RO included in the RO group;
  • the i-th value among the M values is the number of preambles included in the preamble set corresponding to each RO in the multiple ROs included in the RO group. It should be understood that each The number of preambles included in the preamble set corresponding to each RO is equal.
  • the terminal device receives the indication information, and can determine the i-th index range, that is, determine the i-th set, according to the i-th value and the i-th index among the M values.
  • the terminal device can determine M preamble sets according to the M values and the start indexes corresponding to the M values.
  • the network device can indirectly indicate M preamble sets by indicating M values, and then indicate the union of the M preamble sets, that is, the target set.
  • the M values may be the same, or some of the M values may be the same, and some of the values may be different, or the M values may be different.
  • the indication information can be used to indicate the first value and the second value
  • the first value is the number of preambles included in the first preamble set
  • the second value is The value is the number of preambles included in the second preamble set.
  • the first preamble set includes a first number of preambles starting from the first index
  • the second preamble set includes a second number of preambles starting from the second index.
  • the first value is different from the second value.
  • the first value may be Z1, and the second value may be Z2. That is, the network device configures different numbers of preambles for different RO groups.
  • the maximum number of preambles allowed on each RO is limited. Therefore, the first value and the second value must satisfy the requirement that the preambles configured for terminal devices on each RO exceed the allowed number of preambles on each RO.
  • the maximum number of available preambles For example, if the maximum number of preambles available on each RO is Imax, then the maximum number of preambles available on the first group of ROs is Imax, and the maximum number of preambles available on the second group of ROs is also Imax.
  • the first value needs to satisfy that the sum of the first value and the first index is less than Imax, and the second value needs to satisfy that the sum of the second value and the second index is less than Imax.
  • the first value is less than or equal to Z1, that is, the range of the first preamble index is [R+Q, R+Q+Z1 -1].
  • the second index is R, and the range of the second preamble index can be [R, R+Q+Z1-1], then the second value can be configured with a value greater than Z1, such as Z2.
  • the network device can be configured with different numbers of preambles for different ROs, it is possible to configure as many available preambles as possible for the terminal device, for example, Z2 preambles.
  • the utilization rate of the preamble can be improved and the damage to the access performance of the terminal device can be reduced.
  • the terminal device may determine the start index of each RO group in the M RO groups by itself, that is, determine the M start indexes.
  • the terminal device receives the indication information, acquires the first value and the second value, and can determine that the first index corresponds to the first value according to the size of the first index and the second index, as well as the size of the first value and the second value. value, the second index corresponds to the second value.
  • the start indexes corresponding to the M RO groups may be indicated by the network device.
  • the indication information may also indicate start indexes respectively corresponding to the M values, that is, the indication information may also indicate M start indices, and the M start indices correspond to the M values one by one.
  • the terminal device may determine that the first index corresponds to the first value, and the second index corresponds to the second value. For example, if the first index is greater than the second index, the terminal device may determine that the first index corresponds to the minimum value among the first value and the second value.
  • the values in the predefined indication information may be sorted in descending order, and the indexes are sorted in a one-to-one correspondence with the values.
  • the terminal device receives the indication information, and can determine the corresponding relationship between the value and the index according to the sort order of the value and the index.
  • the indication information may be sorted in the order of taking the value first and then the index, or sorting the corresponding value and index as a group, which is not limited in this embodiment of the present application.
  • the indication information may include M indication units, and the M indication units are in one-to-one correspondence with the M RO groups.
  • Each indication unit may indicate a corresponding RO group and a value corresponding to the RO group.
  • the i-th indication unit among the M indication units may include the ROs included in the i-th RO group, and the number of preambles included in the preamble set corresponding to the i-th RO group.
  • the i-th indication unit may also include a start index in the index range of the preamble set corresponding to the i-th RO group.
  • the indication information may include a first indication unit and a second indication unit, where the first indication unit may indicate the first value, the first index, and the first group of ROs, and the second indication unit may indicate the second value, a second index, and a second set of ROs.
  • the terminal device receives the indication information, and can determine the first preamble set corresponding to the first group of ROs indicated by the indication information according to the first value and the first index.
  • the terminal device may also determine the second preamble set corresponding to the second group of ROs indicated by the indication information according to the second value and the second index.
  • the indication information may be used to indicate the first value, the first index, the first group of ROs, the second value, and the second index.
  • the terminal device determines the first preamble set corresponding to the first group of ROs indicated by the indication information according to the first value and the first index.
  • the terminal device determines the second preamble set according to the second value and the second index, and the ROs corresponding to the second preamble set are the ROs except the first group of ROs among the N ROs associated with the first SSB.
  • the first index and the second index may be different.
  • the starting indexes of the preamble sets corresponding to any two RO groups among the M RO groups are different. It can be understood that, in solution 1, different groups of ROs are allowed to configure different numbers of preambles, and the same number of preambles is configured in the same RO group. Therefore, more RO preambles can be configured through the same bit information, which can reduce signaling overhead. For example, if the preamble for configuring one RO occupies 8 bits, then the embodiment of the present application can configure a preamble for a group of ROs through 8-bit information, which reduces signaling overhead compared to configuring a preamble for one RO through 8-bit information.
  • the indication information indicates a third value, where the third value is the number of preambles corresponding to the N ROs associated with the first SSB.
  • the network device only indicates a preamble number value through the indication information, and the terminal device can only use this value and each RO is not configured for other types of terminal devices (other types of terminals).
  • the device can be understood as a preamble of a terminal device of a type different from the above-mentioned terminal device, and the preamble (the index range of the preamble) that can be used by the terminal device on each RO is determined.
  • the number of preambles not configured for other types of terminal devices on some ROs is relatively small, and the number of preambles not configured for other types of terminal devices on the other part of ROs is relatively large.
  • the preamble that can be used by the terminal device on each RO can be determined according to the indicated preamble value and the preamble that is not configured for other types of terminal devices on each RO. Therefore, on each RO The index range of the preamble that the terminal device can use is different, or the number of preambles that the terminal device can use on each RO is different.
  • the network device can configure preambles for each RO according to the RO with the maximum number of available preambles.
  • some preambles configured by some ROs may be invalid for the terminal device, that is, the terminal device cannot use this part of the preamble.
  • the index range of preambles on RO1 and RO3 is [46, 55], and on RO2 and RO4
  • the index range of the preamble is [31, 40].
  • the indexes of preambles that can actually be used by terminal devices on RO1 and RO3 are [46, 49]. That is, for the terminal device, the preamble whose index is [50, 55] on RO1 and RO3 is an invalid preamble.
  • the terminal device can determine the actual available preambles on the N ROs according to the indication information. For example, the terminal device may determine the start index of the preamble set corresponding to each of the N ROs associated with the first SSB, and according to the third value and the start index of the corresponding preamble set on each RO, and each The maximum number of preambles available on the RO determines the preamble set corresponding to the RO.
  • the network device can configure preambles for each RO according to the maximum number of available preamble ROs, more preambles are actually available for terminal devices, so the utilization rate of preamble resources can be improved, and the access of terminal devices can also be improved. performance.
  • the terminal device can determine the start index of the preamble set corresponding to each of the N ROs associated with the first SSB by itself. For details, refer to the relevant content of the foregoing embodiments, and details will not be repeated here.
  • the network device may indicate the start indexes of the preamble sets corresponding to the respective ROs among the N ROs associated with the first SSB.
  • the indication information may also be used to indicate the N start indexes.
  • the embodiment of the present application allows the network device to configure an available preamble for the terminal device in units of RO groups.
  • the third value is the number of preambles respectively corresponding to the M RO groups included in the N ROs associated with the first SSB.
  • the terminal device determines the preamble set corresponding to each RO group according to the third value, the start index of the preamble set corresponding to each RO group in the M RO groups, and the maximum number Imax of preambles available on each RO group.
  • the index range of the preamble included in the preamble set corresponding to any one of the M RO groups is [Istart, min(Imax, Istart+X-1)], where Istart is the starting index of the preamble set, X is the third value, and Imax is the maximum number of available preambles on the RO group.
  • the preamble actually available on the first group of ROs can be based on the first index, the available preamble on the first group of ROs The maximum number Imax of the preamble, and the third value to determine.
  • the actually available preambles on the second group of ROs may be determined according to the second index, the maximum number Imax of available preambles on the second group of ROs, and the third value. Since the terminal device only needs to determine the preamble sets corresponding to the M RO groups, compared with determining the preamble sets corresponding to the N RO groups, the processing complexity of the terminal device can be reduced.
  • the terminal device can determine the start indexes of the preamble sets corresponding to the M RO groups by itself.
  • the network device may indicate the start indexes of the preamble sets respectively corresponding to the M RO groups.
  • the indication information may include M indication units, and the M indication units are in one-to-one correspondence with the M RO groups.
  • Each indication unit may indicate a corresponding RO group and a start index corresponding to the RO group.
  • the i-th indication unit among the M indication units may include the ROs included in the i-th RO group, and the start index corresponding to the i-th RO group.
  • FIG. 7 is a schematic diagram of preamble sets corresponding to the four ROs associated with the first SSB.
  • the network device configures Z2 preambles for RO1-RO4 respectively.
  • the terminal device After receiving the indication information, the terminal device obtains the third value from the indication information, and determines the preamble set on each RO according to the first index, the third value, and the maximum number of available preambles on each RO.
  • the first index is A
  • the second index is B
  • the third value is Z2.
  • the maximum number of preambles available in the first group of ROs is Imax
  • the maximum number of preambles available in the second group of ROs is Imax
  • the maximum number of random access preambles that can be transmitted by an RO is Lmax as an example.
  • the indication information may also indicate the first index and the RO indices included in the first group of ROs, and the second index and the RO indices included in the second group of ROs.
  • the terminal device judges whether the sum of A and Z2 (also referred to as the fourth value herein) is greater than Imax, and determines the first preamble set according to the judgment result. It can be understood that if the fourth value (A+Z2) is greater than Imax, then the maximum index in the first preamble index range is Imax-1; on the contrary, if the fourth value (A+Z2) is less than or equal to Imax, Then the largest index in the first preamble index range is A+Z2-1. That is, the maximum index in the first preamble index range is the minimum value in [Imax-1, A+Z2-1]. For example, A+Z2 in FIG. 7 is greater than Imax, then the first preamble set in FIG.
  • the terminal device judges whether the sum of B and Z2 (also referred to as the fifth value herein) is greater than Imax, and determines the second preamble set according to the judgment result. It can be understood that if the fifth value (B+Z2) is greater than Imax, then the maximum index in the second preamble index range is Imax-1; on the contrary, if the fifth value (B+Z2) is less than or equal to Imax, Then the largest index in the second preamble index range is . That is, the maximum index in the second preamble index range is the minimum value in [Imax-1, B+Z2-1]. For example, in FIG. 7, B+Z2 is less than or equal to Imax, then the first preamble set in FIG. 7 includes Z2 preambles, the start index of the Z2 preambles is B, and the end index is B+Z2-1.
  • the network device reserves some preambles for other purposes, even if the number of preambles configured by the network device for a certain RO exceeds the maximum number Imax of preambles allowed on the RO, as long as the network device The number of configured preambles does not exceed the maximum number Lmax of preambles that can be transmitted on the RO, so the terminal device can still use preambles that exceed Imax. It should be understood that the Lmax corresponding to an RO is greater than the Imax corresponding to the RO.
  • the maximum index in the first preamble index range is Lmax-1; on the contrary, if Lmax is less than or equal to the fourth value, the maximum index in the first preamble index range is The fourth value is subtracted by 1. That is, the maximum index in the first preamble index range is the minimum value in [Lmax-1, A+Z2-1]. Similarly, if Lmax is greater than the fifth value, the maximum index in the second preamble index range is Lmax-1; on the contrary, if Lmax is less than or equal to the fifth value, the maximum index in the second preamble index range is the fifth value value minus 1.
  • the maximum index in the second preamble index range is the minimum value in [Lmax-1, B+Z2-1].
  • the maximum number Lmax of preambles that can be transmitted on one RO is 64.
  • the first index and the second index may be different.
  • the starting indexes of the preamble sets corresponding to any two RO groups among the M RO groups are different.
  • the indication information indicates the third index
  • the third index is the end index of the corresponding preamble among the N ROs associated with the first SSB.
  • the terminal device can determine the actually available preamble for the RO according to the start index of the preamble available on each RO and the end index configured by the network device.
  • the start index of the preamble available on the RO is the first index
  • the third index is greater than the first index
  • the end index of the preamble available on the RO is the first index.
  • the terminal device can determine the start index of the preamble set corresponding to each of the N ROs associated with the first SSB by itself. For details, refer to the relevant content of the foregoing embodiments, and details will not be repeated here.
  • the network device may indicate the start indexes of the preamble sets corresponding to the respective ROs among the N ROs associated with the first SSB.
  • the indication information may also be used to indicate the N start indexes.
  • the third index may also be understood as the end index of the preamble set respectively corresponding to the M RO groups included in the N ROs associated with the first SSB.
  • the terminal device determines the preamble set corresponding to each RO group according to the third index and the start index of the preamble available on each of the M RO groups.
  • the actually available preambles on the second group of ROs may be determined according to the second index and the third index. Since the terminal device only needs to determine the preamble sets corresponding to the M RO groups, compared with determining the preamble sets corresponding to the N RO groups, the processing complexity of the terminal device can be reduced.
  • FIG. 8 is a schematic diagram of a preamble corresponding to four ROs associated with an SSB.
  • the network device configures third indexes for RO1-RO4 respectively.
  • the terminal device may determine the first preamble set according to the third index and the first index, that is, determine the first preamble index range.
  • the terminal device may determine the second random access preamble set according to the third index and the second index, that is, determine the second preamble index range. Take 8 as an example where the first index is A, the second index is B, and the third index is Z.
  • the third index is greater than the first index A, the maximum index in the first preamble index range is the third index Z; on the contrary, if the third index is less than or equal to the first index A, the first preamble index range is an empty set , that is, the first preamble set is an empty set. If the third index is greater than the second index B, the largest index in the second preamble index range is the third index Z; on the contrary, if the third index is less than or equal to the second index B, the second preamble index range is an empty set, that is The second preamble set is an empty set. For example, in FIG.
  • the third index Z is greater than A, the start index of the Z1 preambles included in the first preamble set is A, and the end index is Z.
  • the third index Z is greater than B, and the start index of the Z2 preambles included in the second preamble set is B, and the end index is Z.
  • the terminal device only needs to determine the corresponding preamble set on each RO according to the start index and end index of the preamble on the RO, which is relatively simple.
  • the terminal device can determine the start indexes of the preamble sets corresponding to the M RO groups by itself.
  • the network device may indicate the start indexes of the preamble sets respectively corresponding to the M RO groups.
  • the indication information may include M indication units, and the M indication units are in one-to-one correspondence with the M RO groups.
  • Each indication unit may indicate a corresponding RO group and a start index corresponding to the RO group.
  • the i-th indication unit among the M indication units may include the ROs included in the i-th RO group, and the start index corresponding to the i-th RO group.
  • the first index and the second index may be different.
  • the starting indexes of the preamble sets corresponding to any two RO groups among the M RO groups are different.
  • the network device can use an RO group as a unit, and different ROs can be configured with preamble sets with different index ranges, so as to improve the utilization rate of the preamble and improve the access performance of the terminal device.
  • the preamble set corresponding to each RO group is configured in units of RO groups, compared with configuring the corresponding preamble set for each RO separately, the signaling overhead is less.
  • the terminal device determines a preamble set respectively corresponding to each RO group according to the indication information and the start index of the preamble of each RO group.
  • the manner in which the terminal device determines the preamble set corresponding to each RO group according to the indication information and the start index of the preamble of each RO group is also different.
  • the indication information indicates M values corresponding to M RO groups one-to-one.
  • the terminal device can determine the start index of each RO group in the M RO groups by itself, that is, the terminal device determines the M start indexes, and determines the corresponding relationship between the M values and the M start indexes.
  • the indication information is also used to indicate M starting indices corresponding to the M values one-to-one, and the terminal device may determine a correspondence relationship between the M values and the M starting indices.
  • the terminal device determines the preamble set corresponding to the i-th RO group in the M RO groups according to the i-th value among the M values and the corresponding start index, thereby determining the preamble set corresponding to each RO group in the M RO groups.
  • preamble collection That is to say, the terminal device can determine the preamble set corresponding to any RO in the i-th RO group in the M RO groups according to the i-th value among the M values and the corresponding start index I.
  • the preamble set includes The preamble of is the i-th preamble starting from the I-th preamble.
  • the indication information indicates the third value.
  • the third value is the number of preambles corresponding to the N ROs associated with the first SSB.
  • the terminal device can determine the starting indexes of available preambles corresponding to the N ROs by itself, and determine the starting indexes according to the third value, the starting indexes of the preambles available on each RO, and the maximum number of preambles available on each RO.
  • the indication information may also be used to indicate available preamble start indexes corresponding to the N ROs respectively.
  • the terminal device may determine the preamble set corresponding to the RO according to the third value, the start index of the preamble available on each RO, and the maximum number of preambles available on each RO.
  • the third value is the number of preambles respectively corresponding to the M RO groups included in the N ROs associated with the first SSB.
  • the terminal device can determine the available preamble start indexes corresponding to the M RO groups by itself, and according to the third value, the start index of the preamble available on each RO group, and the maximum number of preamble available on each RO group The number determines the preamble set corresponding to the RO group.
  • the indication information may also be used to indicate the available preamble start indexes corresponding to the M RO groups respectively, that is, the indication information may also be used to indicate the M indexes.
  • the terminal device receives the indication information, and may determine the preamble set corresponding to the RO group according to the third value, the start index of the preamble available on each RO group, and the maximum number of preambles available on each RO group.
  • the indication information indicates the third index.
  • the third index is considered to be the end index of the preamble corresponding to the N ROs associated with the first SSB.
  • the terminal device can determine the available preamble start indexes corresponding to the N ROs by itself, and determine the preamble set corresponding to the RO according to the third index and the start index of the preamble available on each RO.
  • the indication information may also be used to indicate available preamble start indexes corresponding to the N ROs respectively. After receiving the indication information, the terminal device may determine the preamble set corresponding to the RO according to the third index and the start index of the preamble available on each RO.
  • the third index is the end index of the preamble respectively corresponding to the M RO groups included in the N ROs associated with the first SSB.
  • the terminal device can determine the available preamble start indexes corresponding to the M RO groups by itself, and determine the preamble set corresponding to the RO group according to the third index and the start index of the preamble available on each RO group.
  • the indication information may also be used to indicate the available preamble start indexes corresponding to the M RO groups respectively, that is, the indication information may also be used to indicate the M indexes.
  • the terminal device may determine the preamble set corresponding to the RO group according to the third index and the starting index of the preamble available on each RO group.
  • the terminal device selects a first random access preamble from the target set.
  • the terminal device After the terminal device selects the first preamble, it may send the first preamble to the network device on the RO corresponding to the first preamble, for example, the first RO. Correspondingly, the network device receives the first preamble on the first RO.
  • the network device may configure an available preamble for the terminal device in units of RO groups. And the index ranges of the preamble sets corresponding to different RO groups are allowed to be different, so that the network device can determine multiple ROs with the same remaining available preambles as an RO group, so that according to the actual number of remaining available preambles in each RO group, a certain type of terminal
  • the device is configured as a preamble for initial access. Compared with configuring the associated preamble for each RO according to the RO with the least number of available preambles on the network device, the number of available preambles on the RO associated with an SSB can be increased, thereby improving the preamble utilization.
  • the network device configures available preambles for a certain type of terminal equipment according to the actual number of remaining available preambles of each RO group, for example, all the actual remaining available preambles of each RO group are configured for this type of terminal equipment, so that this type More preambles are available for terminal devices, which improves the performance of such terminal devices accessing the network.
  • the method provided in the embodiments of the present application is introduced from the perspective of interaction among the terminal device, the network device, and the location management device.
  • the steps performed by the network device may also be respectively implemented by different communication devices.
  • the first device is used to generate instruction information
  • the second device is used to send instruction information, that is to say, the first device and the second device jointly complete the steps performed by the network device in the embodiment of this application, and this application does not limit the specific Divide the way.
  • the network architecture includes one or more DUs, one or more CUs, and one or more radio frequency units (RUs)
  • the above steps performed by the network device may be respectively implemented by the DUs, CUs, and RUs.
  • the terminal device and the network device may include a hardware structure and/or a software module, and realize the above-mentioned functions in the form of a hardware structure, a software module, or a hardware structure plus a software module . Whether one of the above-mentioned functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.
  • this embodiment of the present application provides a communication device.
  • the following describes the communication device used to implement the above method in the embodiment of the present application with reference to the accompanying drawings.
  • the communication device may include a transceiver module 901 and a processing module 902 .
  • a storage module may also be included, and the storage module may be used to store instructions (code or program) and/or data.
  • the transceiver module 901 and the processing module 902 may be coupled with the storage module, for example, the processing module 902 may read instructions (code or program) and/or data in the storage module to implement corresponding methods.
  • Each of the above modules can be set independently, or can be partially or fully integrated.
  • the processing module 902 may be a processor or a controller, such as a general-purpose central processing unit (central processing unit, CPU), a general-purpose processor, digital signal processing (digital signal processing, DSP), an application specific integrated circuit (application specific integrated circuits, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.
  • the transceiver module 901 is an interface circuit of the device for receiving signals from other devices.
  • the transceiver module 901 is an interface circuit for the chip to receive signals from other chips or devices, or an interface circuit for the chip to send signals to other chips or devices.
  • the communication device 900 may be the network device, the terminal device, and the location management device in the foregoing embodiments, or may be a chip used for the network device, the terminal device, and the location management device.
  • the processing module 902 may be, for example, a processor
  • the transceiver module 901 may be, for example, a transceiver.
  • the transceiver may include a radio frequency circuit
  • the storage unit may be, for example, a memory.
  • the processing module 902 may be a processor, and the transceiver module 901 may be an input/output interface, pins or circuits, etc., for example.
  • the processing module 902 can execute the computer-executed instructions stored in the storage unit.
  • the storage unit is a storage unit in the chip, such as a register, cache, etc., and the storage unit can also be the network device, terminal device or location management Storage units within the device located outside the chip, such as read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory, RAM), etc. .
  • the communication apparatus 900 can correspondingly implement the behavior and function of the terminal device in the foregoing method embodiments.
  • the communication apparatus 900 may be a terminal device, or may be a component (such as a chip or a circuit) applied in the terminal device.
  • the transceiver module 901 may be used to support communication between the terminal device and other network entities, for example, support communication between the terminal device and the network device shown in FIG. 5 .
  • the processing module 902 is used to control and manage the actions of the terminal device.
  • the processing module 902 is used to support the terminal device to perform all operations of the terminal device in FIG. 5 except sending and receiving.
  • the transceiver module 901 may be used to perform all receiving or sending operations performed by the terminal device in the embodiment shown in FIG. 5, such as S501 and S504 in the embodiment shown in FIG. 5, and/or to support the Other procedures for the techniques described.
  • the processing module 902 is configured to execute all operations performed by the terminal device in the embodiment shown in FIG. other processes in support of the techniques described herein.
  • the processing module 902 may be configured to select the first preamble from the target set corresponding to the first SSB.
  • the transceiving module 901 can be configured to send the first preamble to the network device on the first RO associated with the first SSB.
  • the first SSB is associated with N ROs, and the N ROs include M RO groups, N is an integer greater than or equal to 2, and M is less than or equal to N.
  • the M RO groups are in one-to-one correspondence with the M sets. Index ranges corresponding to any two sets in the M preamble sets are different.
  • the i-th index range corresponding to the i-th set in the M sets is different from the j-th index range corresponding to the j-th set in the M sets, and i is not equal to j.
  • the target set is the union of these M sets.
  • the N ROs include a first group of ROs and a second group of ROs, the first group of ROs corresponds to the first preamble set, and the second group of ROs corresponds to the second preamble set.
  • the first preamble index range corresponding to the preamble included in the first preamble set is different from the second preamble index range corresponding to the preamble included in the second preamble set, and the preamble included in the target set is the preamble included in the first preamble set and the second preamble set.
  • the processing module 902 is further configured to determine the first preamble set according to the first index and the first value, and determine the second preamble set according to the second index and the second value, the first index being the start of the first preamble index range index, the second index is the starting index in the second preamble index range.
  • the sum of the first value and the first index is less than the maximum number of random access preambles available in the first group of ROs, and the sum of the second value and the second index is less than the second group The maximum number of random access preambles available in the RO.
  • the first index is smaller than the second index, and the first value is smaller than or equal to the second value.
  • the transceiver module 901 is further configured to receive indication information from the network device, where the indication information is used to indicate a third value, where the third value is the number of preambles corresponding to the N ROs.
  • the processing module 902 is further configured to determine the first preamble set according to the third value and the first index, and determine the second preamble set according to the third value and the second index, the first index being the start of the first preamble index range index, the second index is the starting index in the second preamble index range.
  • the maximum index in the first preamble index range is the minimum value of Imax-1 and the fourth value minus 1, and the fourth value is the sum of the first index and the third value, Imax is the maximum number of preambles available in the first group of ROs.
  • the maximum index in the first preamble index range is the minimum value of Lmax-1 and the fourth value minus 1
  • the fourth value is the sum of the first index and the third value
  • Lmax is a RO transmittable The maximum number of preambles.
  • the fourth value is less than Imax, the maximum index in the first preamble index range is Imax-1; or, if Lmax is greater than the fourth value, the maximum index in the first preamble index range The maximum index is Lmax-1; wherein, the fourth value is the sum of the first index and the third value.
  • the transceiving module 901 is further configured to receive indication information from the network device, where the indication information is used to indicate a third index, where the third index is an end index of a preamble available in the N ROs.
  • the processing module 902 is further configured to determine the first preamble set according to the third index and the first index, and determine the second preamble set according to the second index and the third index, the first index being the starting index in the range of the first preamble index, The second index is the starting index in the second preamble index range.
  • the third index is greater than the first index, and the largest index in the first preamble index range is the third index; or, the third index is less than or equal to the first index, and the first preamble index range is empty set.
  • the third index is greater than the second index, and the largest index in the second preamble index range is the third index; or, the third index is less than or equal to the second index, and the second preamble index range is empty set.
  • the indication information is further used to indicate the first index and the second index.
  • the third type of terminal device includes a terminal device requesting to repeat Msg3.
  • the first target set is used for terminal devices that send Msg3 with a load less than a preset threshold.
  • the transceiver module 901 may be used to perform all receiving or sending operations performed by the network device in the embodiment shown in FIG. 5, such as S501 and S504 in the embodiment shown in FIG. 5, and/or to support Other procedures of the techniques described herein.
  • the processing module 902 is configured to execute all operations performed by the network device in the embodiment shown in FIG. 5 except the transceiving operation, and/or other processes for supporting the technology described herein.
  • the processing module 902 is configured to determine indication information, where the indication information is used to indicate a target set, the target set includes M sets, and the M sets are M RO groups included in the N ROs associated with the first SSB One to one correspondence. Any two sets in the M sets correspond to different index ranges. For example, the i-th index range corresponding to the i-th set in the M sets is different from the j-th index range corresponding to the j-th set in the M sets, and i is not equal to j.
  • the target set is the union of these M sets. For example, the target set includes a first preamble set and a second preamble set.
  • the first preamble set corresponds to the first group of ROs among the N ROs associated with the first SSB
  • the second preamble set corresponds to the second group of ROs among the N ROs.
  • the first preamble index range corresponding to the preamble included in the first preamble set is different from the second preamble index range corresponding to the preamble included in the second preamble set.
  • the transceiver module 901 is configured to send indication information to the terminal device, and receive a first preamble from the terminal device on the first RO among the N ROs, where the first preamble belongs to the target set.
  • the sum of the first value and the first index is less than the maximum number of random access preambles available in the first group of ROs, and the sum of the second value and the second index is less than the second group The maximum number of random access preambles available in the RO.
  • the first index is smaller than the second index, and the first value is smaller than or equal to the second value.
  • the indication information is used to indicate a third value, where the third value is the number of preambles corresponding to N ROs.
  • the maximum index in the first preamble index range is the minimum value of Imax-1 and the fourth value minus 1, and the fourth value is the sum of the first index and the third value, Imax is the maximum number of preambles available in the first group of ROs.
  • the maximum index in the first preamble index range is the minimum value of Lmax-1 and the fourth value minus 1
  • the fourth value is the sum of the first index and the third value
  • Lmax is a RO transmittable The maximum number of preambles.
  • the fourth value is less than Imax, the maximum index in the first preamble index range is Imax-1; or, if Lmax is greater than the fourth value, the maximum index in the first preamble index range The maximum index is Lmax-1; wherein, the fourth value is the sum of the first index and the third value.
  • the indication information is used to indicate a third index, where the third index is an end index of a preamble available in the N ROs.
  • the third index is greater than the first index, and the largest index in the first preamble index range is the third index; or, the third index is less than or equal to the first index, and the first preamble index range is empty set.
  • the third index is greater than the second index, and the largest index in the second preamble index range is the third index; or, the third index is less than or equal to the second index, and the second preamble index range is empty set.
  • the indication information is further used to indicate the first index and the second index.
  • the third type of terminal device includes a terminal device requesting to repeat Msg3.
  • the first target set is used for terminal devices that send Msg3 with a load less than a preset threshold.
  • processing module 902 in this embodiment of the present application may be implemented by a processor or a processor-related circuit component
  • transceiver module 901 may be implemented by a transceiver or a transceiver-related circuit component.
  • the embodiment of the present application also provides a communication system.
  • the communication system includes a network device and a terminal device, or may further include more network devices and a plurality of terminal devices.
  • the communication system includes a network device and a terminal device for realizing the relevant functions of the above embodiment in FIG. 5 .
  • the network devices are respectively used to realize the functions of the related network devices in the embodiment of the present application, for example, to realize the functions of the related network devices in the above embodiment shown in FIG. 5 .
  • the terminal device is used to realize the functions of the relevant terminal device in the embodiment of the present application, for example, to realize the functions of the relevant terminal device in the above embodiment shown in FIG. 5 .
  • the communication system includes a network device and a terminal device, or may further include more network devices and a plurality of terminal devices.
  • the communication system includes a network device and a terminal device for realizing the relevant functions of the above embodiment in FIG. 5 .
  • the network devices are respectively used to realize the functions of the related network devices in the embodiment
  • the communication device 1000 may be a network device capable of realizing the functions of the network device in the method provided by the embodiment of the present application, or the communication device 1000 may be a terminal device , can realize the function of the terminal device in the method provided by the embodiment of the present application; or, the communication device 1000 can also be a device that can support the network device or the terminal device to realize the corresponding function in the method provided by the embodiment of the present application.
  • the communication device 1000 may be a system on a chip.
  • the system-on-a-chip may be composed of chips, or may include chips and other discrete devices.
  • the transceiver module 901 may be a transceiver, and the transceiver is integrated in the communication device 1000 to form the communication interface 1010 .
  • the communication device 1000 includes at least one processor 1020, and the processor 1020 may be a CPU, a microprocessor, an ASIC, or one or more integrated circuits used to control the program execution of the program of this application, for implementing or supporting the communication device 1000 implements the functions of the network device or the terminal device in the method provided by the embodiment of the present application. For details, refer to the detailed description in the method example, and details are not repeated here.
  • the communication device 1000 may also include at least one memory 1030 for storing program instructions and/or data.
  • the memory 1030 is coupled to the processor 1020 .
  • the coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • Processor 1020 may cooperate with memory 1030 .
  • the processor 1020 may execute program instructions and/or data stored in the memory 1030, so that the communication device 1000 implements a corresponding method. At least one of the at least one memory may be included in the processor 1020 .
  • the communication device 1000 may also include a communication interface 1010, using any device such as a transceiver for communicating with other devices or communication networks, such as RAN, wireless local area networks (WLAN), wired access networks, and the like.
  • the communication interface 1010 is used to communicate with other devices through a transmission medium, so that devices used in the communication device 1000 can communicate with other devices. Exemplarily, when the communication device 1000 is a network device, the other device is a terminal device; or, when the communication device 1000 is a terminal device, the other device is a network device.
  • the processor 1020 can use the communication interface 1010 to send and receive data.
  • the communication interface 1010 may specifically be a transceiver.
  • a specific connection medium among the communication interface 1010, the processor 1020, and the memory 1030 is not limited.
  • the memory 1030, the processor 1020, and the communication interface 1010 are connected through the bus 1040.
  • the bus is represented by a thick line in FIG. 10, and the connection mode between other components is only for schematic illustration , is not limited.
  • the bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 10 , but it does not mean that there is only one bus or one type of bus.
  • the processor 1020 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement Or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.
  • a general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
  • Memory 1030 can be ROM or other types of static storage devices that can store static information and instructions, RAM or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), magnetic disk Storage media or other magnetic storage devices, or any other media that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, without limitation.
  • the memory may exist independently and be connected to the processor through the bus 1040 . Memory can also be integrated with the processor.
  • the memory 1030 is used to store computer-executed instructions for implementing the solutions of the present application, and the execution is controlled by the processor 1020 .
  • the processor 1020 is configured to execute the computer-executed instructions stored in the memory 1030, so as to implement the method for sending and/or receiving the random access preamble provided in the foregoing embodiments of the present application.
  • the computer-executed instructions in the embodiments of the present application may also be referred to as application program codes, which is not specifically limited in the embodiments of the present application.
  • the communication device in the above embodiments may be a terminal device or a circuit, or may be a chip applied in the terminal device or other combined devices or components having the functions of the above-mentioned terminal device.
  • the transceiver module may be a transceiver, which may include an antenna and a radio frequency circuit, etc.
  • the processing module may be a processor, such as a central processing unit (CPU).
  • the transceiver module may be a radio frequency unit, and the processing module may be a processor.
  • the communication device may be a field programmable gate array (field programmable gate array, FPGA), a dedicated ASIC, a system on chip (SoC), or a CPU. It can also be a network processor (network processor, NP), it can also be a digital signal processing circuit (digital signal processor, DSP), it can also be a microcontroller (micro controller unit, MCU), it can also be a programmable controller ( programmable logic device, PLD) or other integrated chips.
  • field programmable gate array field programmable gate array
  • FPGA field programmable gate array
  • SoC system on chip
  • CPU central processing circuit
  • NP network processor
  • DSP digital signal processing circuit
  • MCU microcontroller
  • PLD programmable logic device
  • the processing module 902 may be a processor of the chip system.
  • the transceiver module 901 or the communication interface may be an input/output interface or an interface circuit of the chip system.
  • the interface circuit may be a code/data read/write interface circuit.
  • the interface circuit can be used to receive code instructions (the code instructions are stored in the memory, can be read directly from the memory, or can also be read from the memory through other devices) and transmitted to the processor; the processor can be used to run all The above-mentioned code instructions are used to execute the methods in the above-mentioned method embodiments.
  • the interface circuit may also be a signal transmission interface circuit between the communication processor and the transceiver.
  • the communication device in the foregoing embodiments may be a chip, and the chip may include a logic circuit, an input/output interface, and may also include a memory.
  • the input-output interface can be used to receive code instructions (the code instructions are stored in the memory, can be read directly from the memory, or can also be read from the memory through other devices) and transmitted to the logic circuit; the logic circuit, It can be used to run the code instructions to execute the methods in the above method embodiments.
  • the input and output interface may also be a signal transmission interface circuit between the logic circuit and the transceiver.
  • Fig. 11 shows a schematic structural diagram of a simplified communication device.
  • the communication device is a base station as an example.
  • the base station can be applied to the system shown in FIG. 1 , and can be the network device in FIG. 1 , and execute the functions of the network device in the foregoing method embodiments.
  • the communication device 1100 may include a transceiver 1110 , a memory 1121 and a processor 1122 .
  • the transceiver 1110 may be used by a communication device to perform communication, such as sending or receiving the above indication information and the like.
  • the memory 1121 is coupled with the processor 1122, and can be used to store necessary programs and data for the communication device 1100 to realize various functions.
  • the processor 1122 is configured to support the communication device 1100 to execute corresponding functions in the above methods, and the functions can be implemented by calling programs stored in the memory 1121 .
  • the transceiver 1110 may be a wireless transceiver, and may be used to support the communication device 1100 to receive and send signaling and/or data through a wireless air interface.
  • the transceiver 1110 may also be referred to as a transceiver unit or a communication unit, and the transceiver 1110 may include one or more radio frequency units 1112 and one or more antennas 1111, wherein the radio frequency unit is such as a remote radio unit (remote radio unit, RRU) Or an active antenna unit (active antenna unit, AAU), which can be specifically used for the transmission of radio frequency signals and the conversion of radio frequency signals and baseband signals, and the one or more antennas can be specifically used for radiating and receiving radio frequency signals.
  • the transceiver 1110 may only include the above radio frequency unit, then the communication device 1100 may include a transceiver 1110, a memory 1121, a processor 1122, and an antenna.
  • the memory 1121 and the processor 1122 can be integrated or independent of each other. As shown in FIG. 11 , the memory 1121 and the processor 1122 can be integrated into the control unit 1120 of the communication device 1100 .
  • the control unit 1120 may include a baseband unit (baseband unit, BBU) of an LTE base station, and the baseband unit may also be called a digital unit (digital unit, DU), or the control unit 1120 may include 5G and future wireless access Distributed unit (distributed unit, DU) and/or centralized unit (centralized unit, CU) in the base station under the technology.
  • BBU baseband unit
  • DU digital unit
  • centralized unit centralized unit
  • the above-mentioned control unit 1120 can be composed of one or more antenna panels, where multiple antenna panels can jointly support a wireless access network of a single access standard (such as an LTE network), and multiple antenna panels can also respectively support wireless access networks of different access standards. Radio access network (such as LTE network, 5G network or other networks).
  • the memory 1121 and processor 1122 may serve one or more antenna panels. That is to say, the memory 1121 and the processor 1122 may be separately provided on each antenna panel. It is also possible that multiple antenna panels share the same memory 1121 and processor 1122 .
  • necessary circuits may be provided on each antenna panel, for example, the circuits may be used to realize the coupling of the memory 1121 and the processor 1122 .
  • the above transceiver 1110, processor 1122 and memory 1121 may be connected through a bus structure and/or other connection media.
  • the processor 1122 can perform baseband processing on the data to be sent, and then output the baseband signal to the radio frequency unit, and the radio frequency unit will perform radio frequency processing on the baseband signal and pass the radio frequency signal through the antenna Sent in the form of electromagnetic waves.
  • the radio frequency unit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 1122, and the processor 1122 converts the baseband signal into data and converts the data to process.
  • the transceiver 1110 can be used to perform the above steps performed by the transceiver module 901 .
  • the processor 1122 can be used to invoke instructions in the memory 1121 to perform the above steps performed by the processing module 902 .
  • Fig. 12 shows a schematic structural diagram of a simplified terminal device.
  • the terminal device takes a mobile phone as an example.
  • the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used for processing the communication protocol and communication data, controlling the on-board unit, executing software programs, and processing data of the software programs.
  • Memory is primarily used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of equipment may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • FIG. 12 only one memory and processor are shown in FIG. 12 . In an actual device product, there may be one or more processors and one or more memories.
  • a memory may also be called a storage medium or a storage device. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.
  • the antenna and the radio frequency circuit having the function of transmitting and receiving can be regarded as the transmitting and receiving unit of the device
  • the processor having the function of processing can be regarded as the processing unit of the device.
  • the device includes a transceiver unit 1210 and a processing unit 1220 .
  • the transceiver unit 1210 may also be called a transceiver, a transceiver, a transceiver device, and the like.
  • the processing unit 1220 may also be called a processor, a processing board, a processing module, a processing device, and the like.
  • the device in the transceiver unit 1210 for realizing the receiving function may be regarded as a receiving unit
  • the device in the transceiver unit 1210 for realizing the sending function may be regarded as a sending unit, that is, the transceiver unit 1210 includes a receiving unit and a sending unit.
  • the transceiver unit 1210 may also be called a transceiver, a transceiver, or a transceiver circuit, etc. sometimes.
  • the receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit, etc.
  • the sending unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • transceiving unit 1210 is used to perform the sending and receiving operations on the terminal side in the above method embodiments
  • processing unit 1220 is used to perform other operations on the terminal in the above method embodiments except the transceiving operation.
  • the device may include a transceiver unit and a processing unit.
  • the transceiver unit may be an input-output circuit and/or a communication interface;
  • the processing unit is an integrated processor or a microprocessor or an integrated circuit.
  • the embodiment of the present application also provides a computer-readable storage medium, including instructions, which, when run on a computer, cause the computer to execute the method performed by the network device and the terminal device in FIG. 5 .
  • An embodiment of the present application also provides a computer program product, including instructions, which, when run on a computer, cause the computer to execute the method performed by the network device and the terminal device in FIG. 5 .
  • An embodiment of the present application provides a system-on-a-chip, where the system-on-a-chip includes a processor and may further include a memory, configured to implement functions of the network device and the terminal device in the foregoing method.
  • the system-on-a-chip may consist of chips, or may include chips and other discrete devices.
  • the methods provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present invention will be generated in whole or in part.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server, or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL) or wireless (such as infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media.
  • the available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), optical media (for example, digital video disc (digital video disc, DVD for short)), or semiconductor media (for example, SSD).

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Abstract

La présente invention concerne un procédé d'envoi d'un préambule d'accès aléatoire, un procédé de réception d'un préambule d'accès aléatoire, et un appareil de communication. Le procédé d'envoi comprend les étapes suivantes : un dispositif terminal sélectionne un premier préambule à partir d'un ensemble cible correspondant à un premier SSB, et envoie le premier préambule à un dispositif de réseau sur une première RO associée au premier SSB. Le premier SSB est associé à N RO, les N RO comprennent un premier groupe de RO et un second groupe de RO, le premier groupe de RO correspond à un premier ensemble de préambules, et le second groupe de RO correspond à un second ensemble de préambules. Une première plage d'indices de préambule correspondant au premier ensemble de préambules est différente d'une seconde plage d'indices de préambule correspondant au second ensemble de préambules. L'ensemble cible est une union du premier ensemble de préambules et du second ensemble de préambules. Étant donné que des plages d'indices correspondant à des ensembles de préambules correspondant à différents groupes de RO peuvent être différentes, il peut y avoir davantage de préambules disponibles sur des RO associées à un SSB, ce qui permet d'améliorer le taux d'utilisation de préambule et d'améliorer les performances d'accès d'un dispositif terminal.
PCT/CN2022/122668 2021-09-30 2022-09-29 Procédé d'envoi de préambule d'accès aléatoire, procédé de réception de préambule d'accès aléatoire, et appareil de communication Ceased WO2023051711A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024235074A1 (fr) * 2023-05-12 2024-11-21 华为技术有限公司 Procédé de communication et appareil associé

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118785505A (zh) * 2023-04-07 2024-10-15 华为技术有限公司 一种通信方法及装置
WO2025010021A1 (fr) * 2023-07-05 2025-01-09 Panasonic Intellectual Property Corporation Of America Appareils de communication et procédés de communication pour l'attribution de ressources pour des transmissions de canal d'accès aléatoire multi-physique
CN119562378A (zh) * 2023-08-30 2025-03-04 上海朗帛通信技术有限公司 一种被用于无线通信的节点中的方法和装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021127962A1 (fr) * 2019-12-24 2021-07-01 Qualcomm Incorporated Répétition efficace de nouveau message de lumière radio dans une procédure de canal d'accès aléatoire en deux étapes
CN113315616A (zh) * 2018-07-11 2021-08-27 北京小米移动软件有限公司 随机接入配置方法及装置、随机接入方法及装置和基站

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113315616A (zh) * 2018-07-11 2021-08-27 北京小米移动软件有限公司 随机接入配置方法及装置、随机接入方法及装置和基站
WO2021127962A1 (fr) * 2019-12-24 2021-07-01 Qualcomm Incorporated Répétition efficace de nouveau message de lumière radio dans une procédure de canal d'accès aléatoire en deux étapes

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
OPPO: "RACH initialization and resource selection for 2-step RACH", 3GPP TSG-RAN WG2 MEETING #106, R2-1905601, 2 May 2019 (2019-05-02), pages 1 - 4, XP051709959 *
XIAOMI: "RACH partitioning common design for Rel-17 features (SDT, CovEnh, RedCap, RAN slicing)", 3GPP TSG-RAN WG2 MEETING #115 E, R2-2107244, 5 August 2021 (2021-08-05), XP052042880 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024235074A1 (fr) * 2023-05-12 2024-11-21 华为技术有限公司 Procédé de communication et appareil associé

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