WO2021031039A1 - Procédé et appareil d'envoi d'un message d'accès aléatoire - Google Patents

Procédé et appareil d'envoi d'un message d'accès aléatoire Download PDF

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Publication number
WO2021031039A1
WO2021031039A1 PCT/CN2019/101215 CN2019101215W WO2021031039A1 WO 2021031039 A1 WO2021031039 A1 WO 2021031039A1 CN 2019101215 W CN2019101215 W CN 2019101215W WO 2021031039 A1 WO2021031039 A1 WO 2021031039A1
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time
period
pusch
prach
time period
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PCT/CN2019/101215
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English (en)
Chinese (zh)
Inventor
柴晓萌
吴艺群
王轶
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2019/101215 priority Critical patent/WO2021031039A1/fr
Priority to PCT/CN2019/116856 priority patent/WO2021031391A1/fr
Priority to CN201980098779.6A priority patent/CN114175774A/zh
Publication of WO2021031039A1 publication Critical patent/WO2021031039A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • This application relates to the field of communications, and in particular, to a method and device for sending random access messages.
  • the 2-step random access process includes step S1, the terminal device sends MsgA, that is, the terminal device selects (physical random access channel, PRACH) resources and physical uplink shared channel (physical uplink shared channel, PUSCH) resource units. And send random access preamble (preamble) on PRACH resource and use PUSCH resource unit to send uplink data. S2.
  • the network device sends a random access response to the terminal device, such as a message B (messageB, MsgB), where contention resolution information may be included in the MsgB.
  • the preamble and the uplink data are sent in the same message (msgA). Because the time-frequency position of the PRACH time-frequency resource and the PUSCH resource unit are different, when the network device receives a preamble, it cannot be determined with the preamble.
  • the embodiment of the present application provides a method for sending a random access message, which can solve the problem that the PUSCH resource unit associated with the preamble cannot be determined.
  • an embodiment of the present application provides a method for sending a random access message, including: a terminal device determines a preamble, and the determined preamble is associated with a first PRACH time-frequency resource, and the first PRACH time-frequency resource is located in the first PRACH time-frequency resource.
  • the terminal device determines a PUSCH resource unit in the PUSCH resource unit set located in the first time period according to the determined preamble and association rule, where the association rule is used to determine the relationship between the preamble and the PUSCH resource unit The association relationship; the terminal device sends the determined preamble on the first PRACH time-frequency resource, and uses the determined PUSCH resource unit to send uplink data.
  • a terminal device when a terminal device sends a 2-step random access message (MSGA), it can first determine a preamble.
  • the determined preamble is associated with the first PRACH time-frequency resource, and the first PRACH time-frequency resource In the first time period, according to the determined preamble and an association rule for associating the preamble with the PUSCH resource unit, a PUSCH resource unit is determined from the PUSCH resource unit set in the first time period.
  • the terminal device sends the preamble determined by the terminal device on the first PRACH time-frequency resource, and uses the PUSCH resource unit determined by the terminal device to send uplink data.
  • the network device can determine the time period (for example, the first time period) where the PRACH time-frequency resource (for example, the first PRACH time-frequency resource) corresponding to the preamble is located, and then determine that it is located at the first time
  • the PUSCH resource unit set in the segment is further determined according to the association rules to determine the PUSCH resource unit associated with the preamble sent by the terminal device in the PUSCH resource unit set located in the first time period, thereby solving the problem that the network device cannot determine the PUSCH resource associated with the preamble The problem of the unit.
  • the start position of the first time period is related to the start position of the PRACH time domain resource configuration period or the PUSCH time domain resource configuration period, or the start of the first time period
  • the position is related to the starting position of the PRACH time domain resource or the starting position of the PUSCH time domain resource, or the starting position of the first time period is a preset time domain position, or the starting position of the first time period is The time domain location of the network device configuration.
  • the start position of the first time period is the start position of the next time slot of the time slot where the last PUSCH resource unit is located in the PUSCH time domain resource configuration period; or, the first time period
  • the starting position of is the starting position of the time slot where the first PRACH time-frequency resource is located in the PRACH time-domain resource configuration period where the first PRACH time-frequency resource is located.
  • the terminal device When the terminal device sends the preamble and uplink data, it can pass The first PRACH time-frequency resource sends the preamble, and the PUSCH resource unit after the first PRACH time-frequency resource is used to send uplink data.
  • the network device After detecting the preamble in the first PRACH time-frequency resource, the network device can determine the PUSCH resource unit associated with the preamble and located after the first PRACH time-frequency resource according to the preamble, and use the PUSCH resource unit to detect uplink data, avoiding all PUSCHs.
  • the resource unit blindly checks the uplink data.
  • the length of the first time period is greater than or equal to the length of the PUSCH time domain resource configuration period. In this way, it can be ensured as far as possible that the PRACH time-frequency resources in the first time period can be associated with the PUSCH resource unit set located in the first time period.
  • the length of the first time period is an integer multiple of the length of the PUSCH time domain resource configuration period, or the length of the first time period is the length of the PUSCH time domain resource configuration period and the The largest of the length of the PRACH time domain resource configuration period. In this way, it can be ensured as far as possible that the PRACH time-frequency resource in the first time period can be associated with the PUSCH resource unit in the PUSCH resource unit set in the first time period.
  • the first time period is one of multiple consecutive time periods
  • the PRACH time-frequency resource in each of the multiple time periods is only equal to that in the time period.
  • the PUSCH resource unit sets are associated, and the durations of the multiple time periods are the same. Since multiple time periods are continuous, the PRACH time-frequency resource in each time period can be associated with the PUSCH resource unit set in the time period. In this way, it is possible to ensure that each PRACH time-frequency resource can be associated with it as much as possible A collection of PUSCH resource units, or it is guaranteed that each PUSCH resource unit can have PRACH time-frequency resources associated with it.
  • the length of the first time period is based on the synchronization signal/physical broadcast channel block ((synchronization signal, SS)/(physical broadcast channel, PBCH) block, SSB) and the PRACH time-frequency resource
  • the length of the association period is determined.
  • the PRACH time-frequency resource in the first time period may be associated with the PUSCH resource unit set in the first time period.
  • the start position of the first time period is the same as the time domain start position of the first PRACH time-frequency resource, or the start position of the first time period is the same as the first PRACH time-frequency resource.
  • the start position of the time slot where the frequency resource is located is the same. In this way, it can be ensured as far as possible that in the first time period, the preamble set associated with the first PRACH time-frequency resource can be associated with the PUSCH resource unit set located after the time-domain position of the first PRACH time-frequency resource, and the terminal device is sending the preamble and uplink data.
  • the preamble may be sent through the first PRACH time-frequency resource, and the PUSCH resource unit after the first PRACH time-frequency resource may be used to send uplink data.
  • the network device can determine the PUSCH resource unit associated with the preamble and located after the first PRACH time-frequency resource according to the preamble, and use the PUSCH resource unit to detect uplink data, avoiding all PUSCHs.
  • the resource unit blindly checks the uplink data.
  • the PUSCH resource unit set does not include PUSCH resource units that have been associated with PRACH time-frequency resources in the second time period, and the second time period is located before the first time period; or, the PUSCH The resource unit set does not include the PUSCH resource unit that has been associated with the preamble associated with the PRACH time-frequency resource in the second time period. In this way, it is possible to prevent the PUSCH resource unit set from being repeatedly associated with the PRACH time-frequency resource, and to avoid confusion.
  • the starting position of the first time period is equal to the earliest one of the N consecutive time slots.
  • the start positions of the time slots are the same, wherein each of the N consecutive time slots is configured with a PRACH time-frequency resource, and the N is an integer greater than or equal to 2. In this way, it is possible to prevent the PUSCH resource unit set from being repeatedly associated with the PRACH time-frequency resources, and to avoid confusion.
  • the start position of the first time period and the first PRACH time-frequency resource is the same.
  • the preamble set associated with the first PRACH time-frequency resource can be associated with the PUSCH resource unit set located after the time-domain position of the first PRACH time-frequency resource, and the terminal device is sending the preamble and uplink data.
  • the preamble may be sent through the first PRACH time-frequency resource, and the PUSCH resource unit after the first PRACH time-frequency resource may be used to send uplink data.
  • the network device After detecting the preamble in the first PRACH time-frequency resource, the network device can determine the PUSCH resource unit associated with the preamble and located after the first PRACH time-frequency resource according to the preamble, and use the PUSCH resource unit to detect uplink data, avoiding all PUSCHs.
  • the resource unit blindly checks the uplink data.
  • an embodiment of the present application provides a method for sending a random access message, including: a terminal device determines a preamble, and the determined preamble is associated with a first PRACH time-frequency resource, and the first PRACH time-frequency resource is located in the first PRACH time-frequency resource.
  • the terminal device determines a PUSCH resource unit from the set of PUSCH resource units located in the second time period according to the determined preamble and association rule, where the association rule is used to determine the relationship between the preamble and the PUSCH resource unit Association relationship, the length of the second time period is the same as the length of the first time period, and the second time period is after the first time period; the terminal device sends the determined preamble on the first PRACH time-frequency resource , And use the determined PUSCH resource unit to send uplink data.
  • a terminal device when a terminal device sends a 2-step random access message (MSGA), it can first determine a preamble.
  • the determined preamble is associated with the first PRACH time-frequency resource, and the first PRACH time-frequency resource Located in the first time period; then according to the determined preamble and the association rule for associating the preamble with the PUSCH resource unit, determine a PUSCH resource unit in the PUSCH resource unit set in the second time period, and then the The preamble determined by the terminal device is sent on a PRACH time-frequency resource, and the uplink data is sent using the PUSCH resource unit determined by the terminal device.
  • MSGA 2-step random access message
  • the network device after the network device receives the preamble, it can determine the time period (for example, the first time period) where the PRACH time-frequency resource (for example, the first PRACH time-frequency resource) corresponding to the preamble is located, and then determine that it is located at the second time
  • the PUSCH resource unit set in the second time period (the second time period is later than the first time period) is further determined according to the association rules to determine the PUSCH resource unit associated with the preamble sent by the terminal device in the PUSCH resource unit set in the second time period, thereby The problem that the network device cannot determine the PUSCH resource unit associated with the preamble is solved.
  • the start position of the first time period is related to the start position of the PRACH time domain resource configuration period or the PUSCH time domain resource configuration period, or the start of the first time period
  • the position is related to the starting position of the PRACH time domain resource or the starting position of the PUSCH time domain resource, or the starting position of the first time period is a preset time domain position, or the starting position of the first time period is The time domain location of the network device configuration.
  • the preamble set associated with the first PRACH time-frequency resource can be associated with the PUSCH resource unit set located after the time-domain position of the first PRACH time-frequency resource, and the terminal device is sending the preamble and uplink data
  • the preamble may be sent through the first PRACH time-frequency resource, and the PUSCH resource unit after the first PRACH time-frequency resource may be used to send uplink data.
  • the network device After detecting the preamble in the first PRACH time-frequency resource, the network device can determine the PUSCH resource unit associated with the preamble and located after the first PRACH time-frequency resource according to the preamble, and use the PUSCH resource unit to detect uplink data, avoiding all PUSCHs.
  • the resource unit blindly checks the uplink data.
  • the start position of the first time period is the start position of the next time slot of the time slot where the last PUSCH resource unit in a PUSCH time domain resource configuration period; or, the first time The starting position of the segment is the starting position of the time slot where the first PRACH time-frequency resource is located in the PRACH time-domain resource configuration period where the first PRACH time-frequency resource is located.
  • the preamble set associated with the first PRACH time-frequency resource can be associated with the PUSCH resource unit set located after the time-domain position of the first PRACH time-frequency resource, and the terminal device is sending the preamble and uplink data
  • the preamble may be sent through the first PRACH time-frequency resource, and the PUSCH resource unit after the first PRACH time-frequency resource may be used to send uplink data.
  • the network device After detecting the preamble in the first PRACH time-frequency resource, the network device can determine the PUSCH resource unit associated with the preamble and located after the first PRACH time-frequency resource according to the preamble, and use the PUSCH resource unit to detect uplink data, avoiding all PUSCHs.
  • the resource unit blindly checks the uplink data.
  • the length of the first time period is greater than or equal to the length of the PUSCH time domain resource configuration period. In this way, it can be ensured as far as possible that the PRACH time-frequency resource in the first time period can be associated with the PUSCH resource unit in the PUSCH resource unit set in the first time period.
  • the length of the first time period is an integer multiple of the length of the PUSCH time domain resource configuration period, or the length of the PUSCH time domain resource configuration period and the length of the PRACH time domain resource configuration period The biggest. In this way, it can be ensured as far as possible that the PRACH time-frequency resource in the first time period can be associated with the PUSCH resource unit in the PUSCH resource unit set in the first time period.
  • an embodiment of the present application provides a method for receiving a random access message, including: a network device receives a preamble from a terminal device on a first PRACH time-frequency resource, where the first PRACH time-frequency resource is in a first time period Within; the network device determines the PUSCH resource unit associated with the preamble from the set of PUSCH resource units located in the first time period according to the preamble and the association rule, and uses the determined PUSCH resource unit to receive uplink data; wherein, the association rule is used To determine the association relationship between the preamble and the PUSCH resource unit.
  • the network device after the network device receives the preamble, it can determine the time period (for example, the first time period) where the PRACH time-frequency resource (for example, the first PRACH time-frequency resource) corresponding to the preamble is located, and then Determine the PUSCH resource unit set located in the first time period, and further determine the PUSCH resource unit associated with the preamble sent by the terminal device in the PUSCH resource unit set located in the first time period according to the association rule, thereby solving the problem that the network device cannot determine the preamble The problem of the associated PUSCH resource unit.
  • the time period for example, the first time period
  • the PRACH time-frequency resource for example, the first PRACH time-frequency resource
  • the start position of the first time period is related to the start position of the PRACH time domain resource configuration period or the PUSCH time domain resource configuration period, or the start of the first time period
  • the position is related to the start position of the PRACH time domain resource or the PUSCH time domain resource, or the start position of the first time period is the time domain position configured by the network device, or the start position of the first time period It is the preset time domain position.
  • the start position of the first time period is the start position of the next time slot of the time slot where the last PUSCH resource unit is located in the PUSCH time domain resource configuration period; or, the first time The starting position of the segment is the starting position of the time slot where the first PRACH time-frequency resource is located in the PRACH time-domain resource configuration period where the first PRACH time-frequency resource is located.
  • the length of the first time period is greater than or equal to the length of the PUSCH time domain resource configuration period.
  • the length of the first time period is an integer multiple of the length of the PUSCH time domain resource configuration period, or the length of the first time period is the length of the PUSCH time domain resource configuration period and the The largest of the length of the PRACH time domain resource configuration period.
  • the first time period is one of multiple consecutive time periods, and the PRACH time-frequency resource in each of the multiple time periods is only equal to that in the time period.
  • the PUSCH resource unit sets are associated, and the durations of the multiple time periods are the same.
  • the length of the first time period is determined according to the length of the associated period between the synchronization signal block SSB and the PRACH time-frequency resource.
  • the start position of the first time period is the same as the time domain start position of the first PRACH time-frequency resource, or the start position of the first time period is the same as the first PRACH time-frequency resource.
  • the start position of the time slot where the frequency resource is located is the same.
  • the PUSCH resource unit set does not include PUSCH resource units that have been associated with PRACH time-frequency resources in the second time period, and the second time period is located before the first time period; or, the PUSCH The resource unit set does not include the PUSCH resource unit that has been associated with the preamble associated with the PRACH time-frequency resource in the second time period.
  • the starting position of the first time period is equal to the earliest one of the N consecutive time slots.
  • the start positions of the time slots are the same, wherein each of the N consecutive time slots is configured with a PRACH time-frequency resource, and the N is an integer greater than or equal to 2.
  • the start position of the first time period and the first PRACH time-frequency resource is the same.
  • an embodiment of the present application provides a method for receiving a random access message, including: a network device receives a preamble from a terminal device on a first PRACH time-frequency resource, where the first PRACH time-frequency resource is in a first time period The network device determines the PUSCH resource unit associated with the preamble from the PUSCH resource unit set located in the second time period according to the preamble and the association rule, and uses the determined PUSCH resource unit to receive uplink data; wherein the association rule is used In determining the association relationship between the preamble and the PUSCH resource unit, the length of the second time period is the same as the length of the first time period, and the second time period is located after the first time period.
  • the network device after the network device receives the preamble, it can determine the time period (for example, the first time period) where the PRACH time-frequency resource (for example, the first PRACH time-frequency resource) corresponding to the preamble is located, and then Determine the PUSCH resource unit set in the second time period (the second time period is later than the first time period), and further determine according to the association rule that the preamble sent by the terminal device is associated with the PUSCH resource unit set in the second time period
  • the PUSCH resource unit solves the problem that the network device cannot determine the PUSCH resource unit associated with the preamble.
  • the start position of the first time period is related to the start position of the PRACH time domain resource configuration period or the PUSCH time domain resource configuration period, or the start of the first time period
  • the position is related to the start position of the PRACH time domain resource or the PUSCH time domain resource, or the start position of the first time period is the time domain position configured by the network device, or the start position of the first time period It is the preset time domain position.
  • the start position of the first time period is the start position of the next time slot of the time slot where the last PUSCH resource unit in a PUSCH time domain resource configuration period; or, the first time The starting position of the segment is the starting position of the time slot where the first PRACH time-frequency resource is located in the PRACH time-domain resource configuration period where the first PRACH time-frequency resource is located.
  • the length of the first time period is greater than or equal to the length of the PUSCH time domain resource configuration period.
  • the length of the first time period is an integer multiple of the length of the PUSCH time domain resource configuration period, or the length of the PUSCH time domain resource configuration period and the length of the PRACH time domain resource configuration period The biggest.
  • an embodiment of the present application provides a communication device, including: a determining unit, configured to determine a preamble, the determined preamble is associated with a first PRACH time-frequency resource, and the first PRACH time-frequency resource is located in a first time period
  • the determination unit is also used to determine a PUSCH resource unit in the PUSCH resource unit set located in the first time period according to the determined preamble and association rule, wherein the association rule is used to determine the preamble and the PUSCH resource unit
  • the association relationship between; the sending unit is used to send the determined preamble on the first PRACH time-frequency resource, and use the determined PUSCH resource unit to send uplink data.
  • the start position of the first time period is related to the start position of the PRACH time domain resource configuration period or the PUSCH time domain resource configuration period, or the start of the first time period
  • the position is related to the start position of the PRACH time domain resource or the PUSCH time domain resource, or the start position of the first time period is the time domain position configured by the network device, or the start position of the first time period It is the preset time domain position.
  • the start position of the first time period is the start position of the next time slot of the time slot where the last PUSCH resource unit is located in the PUSCH time domain resource configuration period; or, the first time The starting position of the segment is the starting position of the time slot where the first PRACH time-frequency resource is located in the PRACH time-domain resource configuration period where the first PRACH time-frequency resource is located.
  • the length of the first time period is greater than or equal to the length of the PUSCH time domain resource configuration period.
  • the length of the first time period is an integer multiple of the length of the PUSCH time domain resource configuration period, or the length of the first time period is the length of the PUSCH time domain resource configuration period and the The largest of the length of the PRACH time domain resource configuration period.
  • the first time period is one of multiple consecutive time periods, and the PRACH time-frequency resource in each of the multiple time periods is only equal to that in the time period.
  • the PUSCH resource unit sets are associated, and the durations of the multiple time periods are the same.
  • the length of the first time period is determined according to the length of the associated period between the synchronization signal block SSB and the PRACH time-frequency resource.
  • the start position of the first time period is the same as the time domain start position of the first PRACH time-frequency resource, or the start position of the first time period is the same as the first PRACH time-frequency resource.
  • the start position of the time slot where the frequency resource is located is the same.
  • the PUSCH resource unit set does not include PUSCH resource units that have been associated with PRACH time-frequency resources in the second time period, and the second time period is located before the first time period; or, the PUSCH The resource unit set does not include the PUSCH resource unit that has been associated with the preamble associated with the PRACH time-frequency resource in the second time period.
  • the starting position of the first time period is equal to the earliest one of the N consecutive time slots.
  • the start positions of the time slots are the same, wherein each of the N consecutive time slots is configured with a PRACH time-frequency resource, and the N is an integer greater than or equal to 2.
  • the start position of the first time period and the first PRACH time-frequency resource is the same.
  • an embodiment of the present application provides a communication device, including: a determining unit, configured to determine a preamble, the determined preamble is associated with a first PRACH time-frequency resource, and the first PRACH time-frequency resource is located in a first time period
  • the determination unit is also used to determine a PUSCH resource unit from the set of PUSCH resource units located in the second time period according to the determined preamble and association rule, wherein the association rule is used to determine the preamble and the PUSCH resource unit
  • the length of the second time period is the same as the length of the first time period, and the second time period is located after the first time period; the determining unit is also used for setting the first PRACH time-frequency resource
  • the determined preamble is sent up, and the determined PUSCH resource unit is used to send uplink data.
  • the start position of the first time period is related to the start position of the PRACH time domain resource configuration period or the PUSCH time domain resource configuration period, or the start of the first time period
  • the position is related to the start position of the PRACH time domain resource or the PUSCH time domain resource, or the start position of the first time period is the time domain position configured by the network device, or the start position of the first time period It is the preset time domain position.
  • the start position of the first time period is the start position of the next time slot of the time slot where the last PUSCH resource unit in a PUSCH time domain resource configuration period; or, the first time The starting position of the segment is the starting position of the time slot where the first PRACH time-frequency resource is located in the PRACH time-domain resource configuration period where the first PRACH time-frequency resource is located.
  • the length of the first time period is greater than or equal to the length of the PUSCH time domain resource configuration period.
  • the length of the first time period is an integer multiple of the length of the PUSCH time domain resource configuration period, or the length of the PUSCH time domain resource configuration period and the length of the PRACH time domain resource configuration period The biggest.
  • an embodiment of the present application provides a communication device, including: a receiving unit, configured to receive a preamble from a terminal device on a first PRACH time-frequency resource, where the first PRACH time-frequency resource is located in a first time period;
  • the determining unit is configured to determine the PUSCH resource unit associated with the preamble from the set of PUSCH resource units located in the first time period according to the preamble and the association rule, and use the determined PUSCH resource unit to receive uplink data through the receiving unit; wherein, the The association rule is used to determine the association relationship between the preamble and the PUSCH resource unit.
  • the start position of the first time period is related to the start position of the PRACH time domain resource configuration period or the PUSCH time domain resource configuration period, or the start of the first time period
  • the position is related to the start position of the PRACH time domain resource or the PUSCH time domain resource, or the start position of the first time period is the time domain position configured by the network device, or the start position of the first time period It is the preset time domain position.
  • the start position of the first time period is the start position of the next time slot of the time slot where the last PUSCH resource unit is located in the PUSCH time domain resource configuration period; or, the first time The starting position of the segment is the starting position of the time slot where the first PRACH time-frequency resource is located in the PRACH time-domain resource configuration period where the first PRACH time-frequency resource is located.
  • the length of the first time period is greater than or equal to the length of the PUSCH time domain resource configuration period.
  • the length of the first time period is an integer multiple of the length of the PUSCH time domain resource configuration period, or the length of the first time period is the length of the PUSCH time domain resource configuration period and the The largest of the length of the PRACH time domain resource configuration period.
  • the first time period is one of multiple consecutive time periods, and the PRACH time-frequency resource in each of the multiple time periods is only equal to that in the time period.
  • the PUSCH resource unit sets are associated, and the durations of the multiple time periods are the same.
  • the length of the first time period is determined according to the length of the associated period between the synchronization signal block SSB and the PRACH time-frequency resource.
  • the start position of the first time period is the same as the time domain start position of the first PRACH time-frequency resource, or the start position of the first time period is the same as the first PRACH time-frequency resource.
  • the start position of the time slot where the frequency resource is located is the same.
  • the PUSCH resource unit set does not include PUSCH resource units that have been associated with PRACH time-frequency resources in the second time period, and the second time period is located before the first time period; or, the PUSCH The resource unit set does not include the PUSCH resource unit that has been associated with the preamble associated with the PRACH time-frequency resource in the second time period.
  • the starting position of the first time period is equal to the earliest one of the N consecutive time slots.
  • the start positions of the time slots are the same, wherein each of the N consecutive time slots is configured with a PRACH time-frequency resource, and the N is an integer greater than or equal to 2.
  • the start position of the first time period and the first PRACH time-frequency resource is the same.
  • an embodiment of the present application provides a communication device, including: a receiving unit, configured to receive a preamble from a terminal device on a first PRACH time-frequency resource, where the first PRACH time-frequency resource is located in a first time period;
  • the determining unit is configured to determine the PUSCH resource unit associated with the preamble from the PUSCH resource unit set located in the second time period according to the preamble and the association rule, and use the determined PUSCH resource unit to receive uplink data; wherein the association rule is used In determining the association relationship between the preamble and the PUSCH resource unit, the length of the second time period is the same as the length of the first time period, and the second time period is located after the first time period.
  • the start position of the first time period is related to the start position of the PRACH time domain resource configuration period or the PUSCH time domain resource configuration period, or the start of the first time period
  • the position is related to the start position of the PRACH time domain resource or the PUSCH time domain resource, or the start position of the first time period is the time domain position configured by the network device, or the start position of the first time period It is the preset time domain position.
  • the start position of the first time period is the start position of the next time slot of the time slot where the last PUSCH resource unit in a PUSCH time domain resource configuration period; or, the first time The starting position of the segment is the starting position of the time slot where the first PRACH time-frequency resource is located in the PRACH time-domain resource configuration period where the first PRACH time-frequency resource is located.
  • the length of the first time period is greater than or equal to the length of the PUSCH time domain resource configuration period.
  • the length of the first time period is an integer multiple of the length of the PUSCH time domain resource configuration period, or the length of the PUSCH time domain resource configuration period and the length of the PRACH time domain resource configuration period The biggest.
  • an embodiment of the present invention provides a communication device in the form of a chip product.
  • the structure of the device includes a processor and a memory.
  • the memory is used to couple with the processor and store the necessary programs of the device. Instructions and data, the processor is used to execute the program instructions stored in the memory, so that the device executes the function of the terminal device in the above method.
  • an embodiment of the present invention provides a communication device that can implement the functions performed by the terminal device in any one of the methods provided in the first or second aspect above.
  • the functions can be implemented by hardware or Implement the corresponding software through hardware.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the structure of the communication device includes a processor and a communication interface, and the processor is configured to support the communication device to perform a corresponding function in any one of the methods provided in the first aspect or the second aspect.
  • the communication interface is used to support communication between the communication device and other network elements.
  • the communication device may further include a memory, which is used for coupling with the processor, and stores program instructions and data necessary for the communication device.
  • an embodiment of the present invention provides a computer-readable storage medium, including instructions, which when run on a communication device, cause the communication device to execute any method provided in the first aspect or the second aspect.
  • embodiments of the present invention provide a computer program product containing instructions, which when run on a communication device, cause the communication device to execute any method provided in the first aspect or the second aspect.
  • an embodiment of the present invention provides a communication device, which exists in the form of a chip product.
  • the structure of the device includes a processor and a memory.
  • the memory is used to couple with the processor and store the necessary Program instructions and data, the processor is used to execute the program instructions stored in the memory, so that the communication device executes the function of the network device in the above method.
  • an embodiment of the present invention provides a communication device that can implement the functions performed by the network device in any one of the methods provided in the third aspect or the fourth aspect.
  • the functions can be implemented by hardware or It can be realized by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the structure of the communication device includes a processor and a communication interface, and the processor is configured to support the communication device to perform corresponding functions in any one of the methods provided in the third aspect or the fourth aspect.
  • the communication interface is used to support communication between the communication device and other network elements.
  • the communication device may further include a memory, which is used for coupling with the processor, and stores program instructions and data necessary for the communication device.
  • an embodiment of the present invention provides a computer-readable storage medium, including instructions, which when run on a communication device, cause the communication device to execute any method provided in the third aspect or the fourth aspect.
  • embodiments of the present invention provide a computer program product containing instructions, which when run on a communication device, cause the communication device to execute any one of the methods provided in the third aspect or the fourth aspect.
  • a communication system in an eighteenth aspect, includes the communication device provided in the fifth aspect and the communication device provided in the seventh aspect, or the communication device provided in the sixth aspect and the communication device provided in the eighth aspect .
  • FIG. 1 is a schematic diagram of signal interaction in a 2-step random access process provided by an embodiment of this application;
  • FIG. 2 is a schematic diagram of a system architecture suitable for sending random access messages according to an embodiment of the application
  • FIG. 3 is a schematic structural diagram of a terminal device provided by an embodiment of this application.
  • FIG. 4 is a schematic structural diagram of a network device provided by an embodiment of this application.
  • FIG. 5 is a schematic diagram of signal interaction suitable for sending random access messages according to an embodiment of the application.
  • FIG. 6A is a schematic diagram of a time period provided by an embodiment of this application.
  • FIG. 6B is a schematic diagram of another time period provided by an embodiment of this application.
  • FIG. 6C is a schematic diagram of yet another time period provided by an embodiment of the application.
  • FIG. 7 is a schematic diagram of another time period provided by an embodiment of the application.
  • FIG. 8 is a schematic diagram of another time period provided by an embodiment of the application.
  • FIG. 9 is a schematic diagram of another time period provided by an embodiment of the application.
  • FIG. 10 is a schematic diagram of another time period provided by an embodiment of the application.
  • FIG. 11 is a schematic diagram of yet another time period provided by an embodiment of the application.
  • FIG. 12 is a schematic diagram of still another time period provided by an embodiment of this application.
  • FIG. 13A is a schematic diagram of still another time period provided by an embodiment of this application.
  • FIG. 13B is a schematic diagram of still another time period provided by an embodiment of this application.
  • FIG. 13C is a schematic diagram of still another time period provided by an embodiment of the application.
  • FIG. 14 is a schematic diagram of still another time period provided by an embodiment of the application.
  • FIG. 15 is a schematic diagram of still another time period provided by an embodiment of this application.
  • FIG. 16 is a schematic diagram of another time period provided by an embodiment of the application.
  • FIG. 17 is a schematic diagram of still another time period provided by an embodiment of the application.
  • FIG. 19 is a schematic structural diagram of yet another terminal device provided by an embodiment of this application.
  • FIG. 20 is a schematic structural diagram of yet another network device provided by an embodiment of this application.
  • Example embodiments provide a method and apparatus for transmitting a random access message, it is applied to the fourth generation (4 th generation, 4G) mobile communication systems, the fifth generation (5 th generation, 5G) mobile communication system according to the present or future mobile application Communication Systems. For example, it is applied to the new radio (NR) system of 5G.
  • 4G fourth generation
  • 5G fifth generation
  • NR new radio
  • FIG. 2 shows a schematic diagram of a communication system to which the technical solutions provided in the embodiments of the present application are applicable.
  • the communication system may include a network device 100 and one or more terminal devices 200 connected to the network device 100 ( Figure 2 only shows 1). Data transmission can be carried out between network equipment and terminal equipment.
  • the network device 100 may be a device that can communicate with the terminal device 200.
  • the network device 100 may be a base station, which may be an evolved NodeB (eNB or eNodeB) in LTE, a base station in NR, or a relay station or access point, or a base station in a future network Etc., the embodiment of the present application does not limit it.
  • the base station in NR may also be called a transmission reception point (TRP) or gNB.
  • TRP transmission reception point
  • the network device may be an independently sold network device, such as a base station, or a chip that implements corresponding functions in the network device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the device for implementing the functions of the network equipment is a network device as an example to describe the technical solutions provided by the embodiments of the present application.
  • the terminal device 200 in the embodiment of the present application can also be called a terminal, which can be a device with wireless transceiver function.
  • the terminal can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; On water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, and satellites, etc.).
  • the terminal equipment may be user equipment (UE).
  • the UE includes a handheld device, a vehicle-mounted device, a wearable device, or a computing device with wireless communication function.
  • the UE may be a mobile phone, a tablet computer, or a computer with wireless transceiver function.
  • Terminal equipment can also be virtual reality (VR) terminal equipment, augmented reality (augmented reality, AR) terminal equipment, wireless terminals in industrial control, wireless terminals in unmanned driving, wireless terminals in telemedicine, and smart Wireless terminals in power grids, wireless terminals in smart cities, wireless terminals in smart homes, and so on.
  • the terminal device may be an independently sold terminal or a chip in the terminal.
  • the device used to implement the functions of the terminal is a terminal device as an example to describe the technical solutions provided in the embodiments of the present application.
  • the network device 100 or the terminal device 200 in FIG. 2 of the embodiment of the present application may be implemented by one device, or may be a functional module in one device, which is not specifically limited in the embodiment of the present application. It is understandable that the above functions can be network elements in hardware devices, software functions running on dedicated hardware, or virtualization functions instantiated on platforms (for example, cloud platforms), or chip systems . In the embodiments of the present application, the chip system may be composed of chips, or may include chips and other discrete devices.
  • FIG. 3 is a schematic diagram of the hardware structure of an apparatus 300 provided by an embodiment of the application.
  • the apparatus 300 includes at least one processor 301 configured to implement the functions of the terminal device provided in the embodiment of the present application.
  • the device 300 may also include a bus 302 and at least one communication interface 304.
  • the device 300 may also include a memory 303.
  • the processor may be a central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processing (DSP), or a micro-processing unit.
  • CPU central processing unit
  • NP network processor
  • DSP digital signal processing
  • PLD programmable logic device
  • the processor may also be any other device with processing functions, such as a circuit, a device, or a software module.
  • the bus 302 can be used to transfer information between the aforementioned components.
  • the communication interface 304 is used to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.
  • the communication interface 304 may be an interface, a circuit, a transceiver or other devices capable of realizing communication, which is not limited in this application.
  • the communication interface 304 may be coupled with the processor 301.
  • the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, and may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the memory may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or storage
  • ROM read-only memory
  • RAM random access memory
  • EEPROM electrically erasable programmable read-only memory
  • CD-ROM compact disc
  • optical disc storage including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.
  • magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired commands or data structures
  • Program code and any other medium that can be accessed by the computer but not limited to this.
  • the memory may exist independently, or may be coupled with the processor, for example, through the bus 302.
  • the memory can also be integrated with the processor.
  • the memory 303 is used to store program instructions, and the processor 301 can control the execution, so as to implement the method for sending random access messages provided in the following embodiments of the present application.
  • the processor 301 is configured to call and execute instructions stored in the memory 303, so as to implement the method for sending random access messages provided in the following embodiments of the present application.
  • the computer instructions in the embodiments of the present application may also be referred to as program codes, which are not specifically limited in the embodiments of the present application.
  • the memory 303 may be included in the processor 301.
  • the processor 301 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 3.
  • the apparatus 300 may include multiple processors, such as the processor 301 and the processor 307 in FIG. 3. Each of these processors can be a single-CPU (single-CPU) processor or a multi-core (multi-CPU) processor.
  • the processor here may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).
  • the apparatus 300 may further include an output device 305 and an input device 306.
  • the output device 305 is coupled with the processor 301, and can display information in a variety of ways.
  • the output device 305 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector (projector) Wait.
  • the input device 306 is coupled to the processor 301 and can receive user input in a variety of ways.
  • the input device 306 may be a mouse, a keyboard, a touch screen device, or a sensor device.
  • the aforementioned apparatus 300 may be a general-purpose device or a special-purpose device.
  • the terminal device 300 may be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or a similar structure in Figure 3 equipment.
  • PDA personal digital assistant
  • the embodiment of the present application does not limit the type of the device 300.
  • FIG. 4 shows a schematic diagram of the hardware structure of an apparatus 400 provided by an embodiment of the application.
  • the apparatus 400 includes at least one processor 401, configured to implement the functions of the terminal device provided in the embodiment of the present application.
  • the device 400 may also include a bus 402 and at least one communication interface 404.
  • the device 400 may also include a memory 403.
  • the bus 402 can be used to transfer information between the aforementioned components.
  • the communication interface 404 is used to communicate with other devices or communication networks, such as Ethernet, RAN, and WLAN.
  • the communication interface 404 may be an interface, a circuit, a transceiver or other devices capable of realizing communication, which is not limited in this application.
  • the communication interface 404 may be coupled with the processor 401.
  • the memory 403 is used to store program instructions, and the processor 401 can control the execution, so as to implement the method for sending random access messages provided in the following embodiments of the present application.
  • the processor 401 is configured to call and execute instructions stored in the memory 403, so as to implement the method for sending random access messages provided in the following embodiments of the present application.
  • the memory 403 may be included in the processor 401.
  • the processor 401 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 4.
  • the apparatus 400 may include multiple processors, such as the processor 401 and the processor 407 in FIG. 4. Each of these processors can be a single-core processor or a multi-core processor.
  • the processor here may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).
  • PRACH resource configuration In the NR system, PRACH occasions (PRACH occasions, RO) are usually used to indicate a block of time-frequency resources for sending the preamble. As shown in Tables 1 and 2, the preamble format (format) is divided into two types: 839 and 139 according to the length, with a total of 13 types. Wherein, L RA represents preamble sequence length, ⁇ f RA represents a PRACH resource subcarrier spacing, N u, and They are the time domain length of the preamble symbol and CP respectively.
  • the network side can configure the parameter PRACH Configuration Index.
  • the terminal device can determine the time domain resource of the PRACH transmission opportunity according to the parameter PRACH Configuration Index and Table 3.
  • subframe #9 subframe with sequence number 9
  • symbol #0 OFDM symbol with sequence number 0
  • there is only one PRACH slot in one subframe and there are 6 consecutive PRACH transmissions in each PRACH slot
  • the time domain resource of each PRACH transmission opportunity occupies 2 symbols.
  • x represents the PRACH time domain resource configuration period
  • y represents the radio frame configured with PRACH time domain resources in the PRACH time domain resource configuration period
  • Table 3 only shows the time domain resource configuration information of some PRACH transmission opportunities.
  • the network side When the network side configures the frequency domain resources of PRACH transmission opportunities, it can configure the frequency domain size and frequency domain start position of the PRACH transmission opportunities, and how many frequency domain continuous PRACH transmission opportunities are on the time domain resource of each PRACH transmission opportunity. For example, the network side can configure the parameter msg1-FrequencyStart to indicate the frequency domain start position of the PRACH transmission opportunity. The network side may also configure, for example, the parameter msg1-FDM, which is used to indicate how many frequency-domain continuous PRACH transmission opportunities are frequency-division multiplexed on the time-domain resource of each PRACH transmission opportunity.
  • PUSCH resource configuration In the existing NR system, PUSCH transmission opportunity (PUSCH occasion, PO) can be used to represent a piece of PUSCH time-frequency resource that can be used for data transmission.
  • PUSCH resource configuration includes PUSCH time domain resource configuration and PUSCH frequency domain resource configuration.
  • the PUSCH resource unit may be a PUSCH time-frequency resource, or a combination of a PUSCH time-frequency resource and a DMRS sequence, or a combination of a PUSCH time-frequency resource and a DMRS port, or a PUSCH time-frequency resource
  • the combination with DMRS sequence and DMRS port is not limited in this application.
  • the PUSCH time domain resource configuration is used to indicate the configuration of the PUSCH resource in the time domain.
  • the PUSCH time domain resource configuration may include one or more of the time domain start position of the PUSCH resource, the time domain end position (end position) of the PUSCH resource, or the time domain length of the PUSCH resource.
  • One is independent configuration, that is, the start of the PUSCH resource unit is configured by the period and the time domain offset relative to the system frame number (SFN) 0.
  • the start position is to configure the relative position relative to the PRACH time-frequency resource, that is, configure the start position of the PUSCH time-frequency resource by configuring the time domain offset from the PRACH time-frequency resource.
  • the PUSCH time-domain resource configuration can be described by some resource configurations related to PUSCH transmission opportunities.
  • the PUSCH time domain resource configuration may include one or more of the start position of the PUSCH transmission opportunity time domain, the PUSCH transmission opportunity time domain length, and the number of time division multiplexed PUSCH transmission opportunities.
  • the PUSCH frequency domain resource configuration is used to indicate the configuration of the PUSCH resource in the frequency domain.
  • the PUSCH frequency domain resource configuration may include one or more of the frequency domain start position of the PUSCH resource, the frequency domain end position of the PUSCH resource, or the frequency domain length of the PUSCH resource.
  • the PUSCH frequency domain resource configuration can be described by some resource configurations related to PUSCH transmission opportunities.
  • the PUSCH frequency domain resource configuration may include one or more of PUSCH transmission opportunity frequency domain start position, PUSCH transmission opportunity frequency domain end position, PUSCH transmission opportunity frequency domain length, and frequency division multiplexed PUSCH transmission opportunity number.
  • an embodiment of the present application provides a method for sending a random access message, including:
  • the terminal device determines a preamble, the determined preamble is associated with a first PRACH time-frequency resource, and the first PRACH time-frequency resource is located in a first time period.
  • the terminal device may first determine the first PRACH time-frequency resource, and the first PRACH time-frequency resource is located in the first time period; and then determine a preamble according to one or more preambles associated with the first PRACH time-frequency resource.
  • the preamble determined by the terminal device may be one of one or more preambles associated with the first PRACH time-frequency resource.
  • the first time period is one of multiple consecutive time periods, and the multiple time periods have the same duration.
  • the PRACH time-frequency resources in each of the multiple time periods are only associated/mapped/corresponding to the PUSCH resource units in the time period (that is, the PRACH time-frequency resources in each time period are only associated with the PUSCH resource units in the time period.
  • the PUSCH resource unit has an association relationship/mapping relationship/correspondence); in other words, the preamble associated with the PRACH time-frequency resource in each of the multiple time periods is only associated with the PUSCH resource unit in the time period /Mapping/correspondence.
  • Each time period can be understood as a mapping period of msgA, or a mapping range of msgA.
  • the PRACH time-frequency resource used to send the preamble and the PUSCH resource unit used to send uplink data are located in the same time period.
  • the preamble in msgA and the PUSCH resource unit used for uplink data are located in the same time period. In a time period.
  • each of the multiple time periods there may be one or more PRACH time-frequency resources (the one or more PRACH time-frequency resources may form a PRACH time-frequency resource set) and one or more PUSCH resource units (the One or more PUSCH resource units can form a PUSCH resource unit set), and PRACH time-frequency resources in each time period can be associated with one or more preambles (the one or more preambles can form a preamble set).
  • the PRACH time-frequency resource set in the time period can be associated with the PUSCH resource unit set in the time period, that is, the PRACH time-frequency resource set in the time period
  • the PRACH time-frequency resource can be associated with the PUSCH resource unit in the PUSCH resource unit set in the time period; or, for each of the multiple time periods, the preamble associated with the PRACH time-frequency resource in the time period
  • the set can be associated with the PUSCH resource unit set in the time period, that is, the preamble in the preamble set associated with the PRACH time-frequency resource in the time period can be associated with the PUSCH resource unit in the PUSCH resource unit set in the time period. Make an association.
  • the start position of the first time period is related to the start position of the PRACH time domain resource configuration period or the PUSCH time domain resource configuration period, or the start position of the first time period is related to PRACH transmission
  • the opportunity or the time domain position of the PUSCH transmission opportunity is related, or the start position of the first time period is a preset time domain position.
  • the starting position of the first time period may be predefined or configured by the network device.
  • the PRACH time domain resource configuration period may be a period of PRACH transmission opportunities, and each PRACH time domain resource configuration period may have one or more PRACH transmission opportunities.
  • the PUSCH time domain resource configuration period may be a period of PUSCH transmission opportunities, and each PUSCH time domain resource configuration period may have one or more PUSCH transmission opportunities. If the PUSCH time domain resources are configured relative to the PRACH time domain resources, the length of the PUSCH time domain resource configuration period may be the same as the length of the PRACH time domain resource configuration period.
  • PUSCH time-domain resources can be configured relative to PRACH time-domain resources.
  • the length of the PUSCH time-domain resource configuration period can be the same as the length of the PRACH time-domain resource configuration period.
  • the length of the PUSCH time-domain resource configuration period may be the same as the length of the time period between two sets of adjacent PUSCH time slot groups.
  • a PUSCH time slot group refers to multiple consecutive time slots. , There is at least one PUSCH transmission opportunity in the multiple consecutive time slots.
  • the starting position of the first time period may be the starting position of the next time slot of the time slot where the last PUSCH resource unit in a PUSCH time domain resource configuration period; or, the first time period
  • the starting position of may be the starting position of the time slot where the first PRACH time-frequency resource is located in the PRACH time-domain resource configuration period where the first PRACH time-frequency resource is located.
  • the length of the first time period is greater than or equal to the length of the PUSCH time domain resource configuration period. If the PUSCH time domain resources are configured relative to the PRACH time domain resources, the length of the PRACH time domain resource configuration period may be the same as the length of the PUSCH time domain resource configuration period. That is, the length of the first time period is greater than or equal to the length of the PRACH time domain resource configuration period.
  • the length of the first time period may be an integer multiple of the length of the PUSCH time domain resource configuration period, or the length of the first time period may be the length of the PUSCH time domain resource configuration period and the PRACH time domain resource configuration period. The largest of the lengths. Alternatively, the length of the first time period is the greatest common multiple of the length of the PUSCH time domain resource configuration period and the length of the PRACH time domain resource configuration period, which is not limited here.
  • the time length of the first time period may be predefined or configured by the network device.
  • the starting position of the PRACH time domain resource configuration period may be time slot 0 of a 10ms radio frame, and the length of the period is 10ms, that is, a radio frame.
  • One RO time domain resource
  • the PUSCH time domain resources are independently configured.
  • the starting position is time slot 0 and time slot 5 of a 10ms radio frame, and the period length is 5ms.
  • a PO time domain resource
  • the length of the first time period is equal to the length of the PUSCH time domain resource configuration period, that is, the length of the first time period is 5ms
  • the starting position of the first time period is the last PUSCH transmission opportunity in a PUSCH time domain resource configuration period
  • the starting position of the next time slot of the time slot that is, the starting position of the first time period is the starting position of time slot 2 and time slot 7.
  • FIG. 6C shows multiple consecutive time periods, such as time period 0, time period 1, and time period 2.
  • the first PRACH time-frequency resource may be located in any of the time period 0, the time period 1, and the time period 2, that is, the first time period may be any one of the time period 0, the time period 1, and the time period 2.
  • the preamble set associated with RO on time slot 2 and time slot 5 is associated with the PUSCH resource unit set on time slot 6; in time period 1, the preamble set associated with RO on time slot 8 It is associated with the PUSCH resource unit set on time slot 1; in time period 2, the preamble set associated with the RO on time slot 2 and time slot 5 is associated with the PUSCH resource unit set on time slot 6. That is, in every 10ms (every 10 time slots), the preamble set associated with RO on time slot 2 and time slot 5 is associated with the PUSCH resource unit set on time slot 6, and the RO on time slot 8 is associated The preamble set is associated with the PUSCH resource unit set on time slot 1.
  • each RO can be configured with one or more preambles
  • each PO can be configured with one or more resource units
  • the PUSCH resource unit set on one or more time slots includes this one Or PUSCH resource units configured on POs in multiple time slots.
  • the starting position of the PRACH time domain resource configuration cycle is time slot 0 of a 10ms radio frame, and the length of the cycle is 10ms.
  • Time slot 2 time slot 5, and time slot 5 in each 10ms radio frame
  • Each time slot 8 is configured with one RO.
  • the PUSCH time domain resource is configured relative to the PRACH time domain resource, and its period is the same as the PRACH time domain resource configuration period, that is, the length of the period is 10 ms, and the starting position is time slot 0 in each 10 ms radio frame.
  • Two POs are configured in time slot 3, time slot 6 and time slot 9 in each 10ms radio frame.
  • the length of the first time period is equal to the length of the PUSCH time domain resource configuration period, that is, the length of the first time period is 10 ms
  • the starting position of the first time period is the time of the last PUSCH transmission opportunity in the PUSCH time domain resource configuration period
  • the starting position of the next time slot of the slot, that is, the starting position of the first time period is the starting position of time slot 0.
  • FIG. 7 shows multiple consecutive time periods, such as time period 0 and time period 1, and the first time period can be any one of them.
  • time period 0 the preamble set associated with RO in time slot 2, time slot 5, and time slot 8 is associated with the PUSCH resource unit set in time slot 3, time slot 6 and time slot 9; in time period 1, time The preamble set associated with the RO on slot 2, time slot 5, and time slot 8 is associated with the PUSCH resource unit set associated with the RO on time slot 3, time slot 6 and time slot 9. That is, in each 10ms, the preamble set associated with the RO on time slot 2, time slot 5, and time slot 8 is associated with the PUSCH resource unit set on time slot 3, time slot 6 and time slot 9.
  • the starting position of the PRACH time domain resource configuration cycle is time slot 0 of a 10ms radio frame, and the length of the cycle is 10ms.
  • Time slot 2 time slot 5, and time slot 5 in each 10ms radio frame
  • Each time slot 8 is configured with one RO.
  • the PUSCH time domain resource configuration cycle is an independent configuration.
  • the starting position is time slot 0 and time slot 5 of a 10ms radio frame, and the length of the cycle is 5ms.
  • Each configuration is configured on time slot 1 and time slot 6 in each 10ms radio frame. There are two POs.
  • the length of the first time period is equal to the length of the PRACH time domain resource configuration period, that is, the length of the first time period is 10 ms
  • the starting position of the first time period is the location of the first PRACH time-frequency resource in the PRACH time domain resource configuration period
  • the starting position of the time slot, that is, the starting position of the first time period is the starting position of time slot 2 in each 10ms radio frame.
  • FIG. 8 shows multiple consecutive time periods, such as time period 0 and time period 1, and the first time period may be any one of them.
  • time period 0 the preamble set associated with RO on time slot 2, time slot 5 and time slot 8 is associated with the PUSCH resource unit on time slot 6 and time slot 1; in time period 1, time slot 2, time slot
  • the preamble sets associated with ROs on time slots 5 and 8 are associated with PUSCH resource units on time slot 6 and time slot 1. That is, in each 10ms, the preamble set associated with the RO on time slot 2, time slot 5 and time slot 8 is associated with the PUSCH resource unit on time slot 6 and time slot 1.
  • the length of the first time period may be determined according to PRACH time-frequency resource configuration, PUSCH resource unit configuration, and predefined rules.
  • the predefined rule may be to set the first time period to include M PRACH transmission opportunities, and the M PRACH transmission opportunities can be associated with the PUSCH resource unit located behind the own time domain resource within the first time period.
  • M is an integer greater than or equal to 1.
  • the predefined rule may be to set the first time period to include 3 PRACH transmission opportunities, and the 3 PRACH transmission opportunities can all be associated with the PUSCH resource unit located behind the own time domain resource within the first time period.
  • the first PRACH time-frequency resource is the RO on time slot 2
  • the time period 0 is the first time period
  • the first time period includes 3 ROs
  • the 3 ROs can be associated with the RO in the first time period.
  • PUSCH resource unit after its own time domain resources. That is, the preamble set associated with the RO on time slot 2, time slot 5, and time slot 8 is associated with the PUSCH resource unit set on time slot 3, time slot 6 and time slot 9.
  • these PRACH time-frequency resources or PUSCH resource units span multiple time periods, these PRACH time-frequency resources or PUSCH resource units belong to the time period where their start position is located, or the time period where their end position is located, or these PRACH Time-frequency resources or PUSCH resource units do not belong to any time period, that is, these PRACH time-frequency resources or PUSCH resource units do not participate in msgA mapping.
  • the RO on time slot 6 and time slot 7 spans two time periods, that is, both in time period 0 and time period 1, the RO can belong to the time period where its starting position is located , That is, time period 0.
  • the preamble set associated with RO on time slot 2 and time slot 3 and the preamble set associated with RO on time slot 6 and time slot 7 are all the same as time slot 6. Mapping on the PUSCH resource unit set.
  • the preamble set associated with ROs on time slots 6 and 7 may belong to the time period where the end position is located, that is, time period 1.
  • the ROs on time slots 6 and 7 are associated
  • the set of preambles is mapped to the set of PUSCH resource units on slot 1.
  • the ROs on time slots 6 and 7 do not belong to any time period.
  • the PUSCH resource unit set on time slot 1 is not mapped to the preamble set associated with the RO on any time slot.
  • the PUSCH resource unit set on slot 1 is not used for MsgA transmission.
  • the preamble set is only associated with the PUSCH resource unit set on a certain PUSCH transmission opportunity.
  • the specific PUSCH transmission opportunity may be the first PUSCH transmission opportunity among the repeated PUSCH transmission opportunities, or may be the M th PUSCH transmission opportunity configured by the network device, and M is an integer greater than or equal to 1.
  • time slot 2 and time slot 9 are a retransmission of the PO on time slot 3, then time slot 2, time slot 5 and time slot 8
  • the preamble set associated with the RO above may only be associated with the PUSCH resource unit set on the specific PO.
  • the specific PO may be the PO on time slot 3. That is, in the time period 0, the preamble set associated with the RO on the time slot 2, the time slot 5 and the time slot 8 may only be associated with the PUSCH resource unit set on the PO on the time slot 3.
  • the preamble set on a specific PRACH time-frequency resource in the repeatedly transmitted PRACH time-frequency resource is associated with the PUSCH resource unit set in the first time period.
  • the specific PRACH time-frequency resource may be the first PRACH time-frequency resource among the repeatedly transmitted PRACH time-frequency resources, or it may be the Mth PRACH time-frequency resource configured by the network device.
  • the ROs on time slot 5 and 8 are retransmissions of RO on time slot 2, then in time period 0, time slot 3, time slot 6 and time slot 9
  • the above PUSCH resource unit set is only associated with the preamble set associated with a specific RO.
  • the specific RO may be the RO on time slot 2. That is, in time period 0, the PUSCH resource unit sets on time slot 3, time slot 6 and time slot 9 are only associated with the preamble set associated with the RO on time slot 2.
  • the PRACH time-frequency resource is only mapped to the PUSCH resource unit located after its own time-domain resource, or the preamble is only mapped to the PUSCH located after the time-domain resource of its associated PRACH time-frequency resource Resource unit.
  • these PUSCH resource units are not used for msgA transmission.
  • the first time period if there are some PRACH time-frequency resources or preambles are not mapped to PUSCH resource units, these PRACH time-frequency resources or preambles are not used for msgA transmission.
  • these PRACH time-frequency resources are not used for msgA transmission, or these PRACH time-frequency resources
  • the time-frequency resources are used for four-step random access transmission, or these PRACH time-frequency resources can be used for repeated transmission of a specific PRACH time-frequency resource that can be used for msgA transmission before the PRACH time-frequency resource.
  • these PUSCH resource units are not used for msgA transmission, or these PUSCH resource units It can be used for repeated transmission of a PUSCH resource unit that can be used for msgA transmission before the PUSCH resource unit.
  • the starting position of the PRACH time domain resource configuration period is time slot 0 of a 10ms radio frame, and the length of the period is 10ms, that is, one radio frame.
  • An RO is configured on time slot 2 in each 10ms radio frame.
  • the PUSCH time domain resource configuration cycle is an independent configuration.
  • the starting position is time slot 0 and time slot 5 of a 10ms radio frame, and the length of the cycle is 5ms.
  • Each configuration is configured on time slot 1 and time slot 6 in each 10ms radio frame.
  • the length of the first time period is equal to the length of the PUSCH time domain resource configuration period, that is, the length of the first time period is 5ms
  • the starting position of the first time period is the last PUSCH transmission opportunity in a PUSCH time domain resource configuration period
  • the starting position of the next time slot of the time slot may be the starting position of time slot 2 and time slot 7.
  • FIG. 10 shows multiple consecutive time periods, such as time period 0, time period 1, and time period 2, and the first time period may be any one of them.
  • the preamble set associated with the RO on time slot 2 is associated with the PUSCH resource unit set on time slot 6.
  • time period 1 since there is no PRACH time-frequency resource before the time domain resources of the PUSCH resource unit set on time slot 1, there is no preamble that can be associated with the PUSCH resource unit set on time slot 1.
  • the PUSCH resource unit set is not used for msgA transmission, or the PUSCH resource unit set on time slot 1 can be used for repeated transmission of the PUSCH resource unit set on time slot 6.
  • time period 2 the preamble set associated with the RO on time slot 2 is associated with the PUSCH resource unit set on time slot 6.
  • the length of the first time period is determined according to the length of the association period/mapping period between the SSB and the PRACH time-frequency resource.
  • the length of the association period between SSB and PRACH time-frequency resources can be an integer multiple of the length of the PRACH time-domain resource configuration period.
  • all actually sent SSBs are mapped to at least PRACH time-frequency resources Again.
  • the association period between multiple SSBs and PRACH time-frequency resources may form an association period pattern between SSB and PRACH time-frequency resources, and the association period pattern repeats at most every 160 ms.
  • the association period pattern between SSB and PRACH time-frequency resources may include 6 SSB and PRACH time-frequency resources.
  • the association period of the resources may be association period 0, association period 1, association period 2, association period 3, association period 4, association period 5, and SSB and PRACH time-frequency resources are not mapped in the remaining 10 ms.
  • the length of the association period between the SSB and the PRACH time-frequency resource can have various values.
  • the length of association period 0, association period 1, association period 2, association period 3, association period 4, and association period 5 may be 40 ms, 10 ms, 20 ms, 40 ms, 20 ms, and 20 ms, respectively.
  • a time period pattern may be determined according to the associated period pattern of the SSB and the PRACH time-frequency resource, and the period of the time period pattern may be 160 ms.
  • Each time period pattern can include 6 time periods, with lengths of 40ms, 10ms, 20ms, 40ms, 20ms, and 20ms respectively, and the first time period can be one of them.
  • the preamble set on the time slot configured with RO is associated with the PUSCH resource unit set on the time slot configured with PO.
  • the first time period is a time period associated with the first PRACH time-frequency resource, and the start position of the first time period is the same as the time domain start position of the first PRACH time-frequency resource, or the first time
  • the segment is the time period associated with the time slot where the first PRACH time-frequency resource is located, and the start position of the first time period is the same as the start position of the time slot where the first PRACH time-frequency resource is located.
  • the time slot where the first PRACH time-frequency resource is located can refer to a normal time slot or a PRACH time slot.
  • the normal time slot refers to the PUSCH subcarrier interval as a reference, or the upstream bandwidth part (BWP) subcarrier interval as a reference Time slot
  • PRACH time slot is the time slot related to PRACH sub-carrier spacing.
  • the start position of the first time period is the same as the start position of the subframe where the first PRACH time-frequency resource is located.
  • time slot 0 the start position of the first time period
  • the length of the first time period may be the base station Configured, for example, 3ms.
  • the preamble set associated with the RO on time slot 0 can be associated with the PUSCH resource unit set on time slot 1.
  • the start position of the first time period (for example, time period 1) may be the start position of time slot 4, and the length of the first time period may be the base station Configured, for example, 3ms.
  • the preamble set associated with the RO on time slot 4 can be associated with the PUSCH resource unit set on time slot 5.
  • the start position of the first time period (for example, time period 2) may be the start position of time slot 8, and the length of the first time period may be the base station Configured, for example, 3ms.
  • time period 2 the preamble set associated with the RO on time slot 8 can be associated with the PUSCH resource unit set on time slot 9.
  • the time slot in which the first PRACH time-frequency resource is located is in N consecutive time slots, where each of the N consecutive time slots is configured with a PRACH time-frequency resource, then The starting position of a period of time is the same as the starting position of the earliest time slot among N consecutive time slots, and N is an integer greater than or equal to 2. If the previous time slot of the time slot where the first PRACH time-frequency resource is located is not configured with the PRACH time-frequency resource, the starting position of the first time period is the same as the starting position of the time slot where the first PRACH time-frequency resource is located.
  • time slot 3 For example, as shown in Figure 13A, assume that in each 10ms wireless frame, one RO is configured on time slot 3, time slot 4, and time slot 9, and time slot 5, time slot 6 and time slot 1 are configured on each There are two POs. If the time slot where the first PRACH time-frequency resource is located is time slot 4, since time slot 4 is continuous with time slot 3 configured with RO, the starting position of the first time period (for example, time period 0) is the same as the continuous time slot The start position of the earliest time slot in the same, that is, the start position of the first time period is the start position of time slot 3, and the length of the first time period may be configured by the base station, for example, 4 ms.
  • the preamble set associated with the RO on time slot 3 and time slot 4 is associated with the PUSCH resource unit set on time slot 5 and time slot 6. If the time slot where the first PRACH time-frequency resource is located is time slot 9, since the previous time slot of time slot 9 (that is, time slot 8) is not configured with PRACH time-frequency resources, the first time period (for example, time period 1)
  • the starting position is the same as the starting position of the time slot where the first PRACH time-frequency resource is located, that is, the starting position of the first time period is the starting position of time slot 9, and the length of the first time period can be configured by the base station, for example Is 4ms.
  • time period 1 the preamble set associated with the RO on time slot 9 is associated with the PUSCH resource unit set on time slot 1.
  • each of the N consecutive time slots configured with PRACH time-frequency resources can be associated with a time period, and the start position of the time period corresponding to each time slot is the beginning of the time slot. Starting position, the length of the time period corresponding to each time slot can be the same.
  • the time periods corresponding to two consecutive time slots configured with PRACH time-frequency resources may overlap.
  • the PUSCH resource unit set in the first time period does not include the PRACH time period in the second time period.
  • the PUSCH resource unit associated with the frequency resource, or the PUSCH resource unit set in the first time period does not include the PUSCH resource unit associated with the preamble associated with the PRACH time-frequency resource in the second time period, and the second time period is located in the first time period.
  • a time period before, or in other words, the starting position of the second time period is earlier than the first time period.
  • time slot 3 For example, as shown in Figure 13B, assume that in each 10ms radio frame, one RO is configured on time slot 3, time slot 4, and time slot 9, and time slot 5, time slot 6 and time slot 1 are each configured There are two POs. If each time slot containing the PRACH time-frequency resource corresponds to a time period, the length of each time period can be 3 ms. Time slot 3, time slot 4, and time slot 9 may each be associated with a time period with a time domain length of 3 ms, which may be time period 0, time period 1, and time period 2, respectively. Since time slot 0 is the time slot associated with slot 3, the preamble set associated with the RO on slot 3 is associated with the PUSCH resource unit set located in time slot 0, that is, the PUSCH resource unit set on slot 5.
  • time slot 1 is the time slot associated with slot 4
  • the preamble set associated with RO on slot 4 could be associated with the PUSCH resource unit set located in time slot 1, namely PUSCH on slot 5 and slot 6.
  • Resource unit set but because the PUSCH resource unit set on time slot 5 has been associated with the PRACH time-frequency resource (that is, the PRACH time-frequency resource on time slot 3) in time period 0 (that is, the second time period), time slot 4
  • the preamble set associated with the RO above is only associated with the PUSCH resource unit set located on slot 6. If the time slot where the first PRACH time-frequency resource is located is time slot 9, the preamble set associated with the RO on time slot 9 may be associated with the PUSCH resource unit set located in time period 2, that is, the PUSCH resource unit set on time slot 1.
  • the first time period is the time period associated with the target PUSCH resource unit, the end position of the first time period is the same as the time domain end position of the target PUSCH resource unit, and the time domain position of the target PUSCH resource unit is later than the first time period. 1.
  • the time domain position of the PRACH time-frequency resource The terminal device may determine the time domain position of the first PRACH time-frequency resource according to the length of the first time period to determine the time domain position of the target PUSCH resource unit.
  • the first time period is a time period associated with the target time slot, and the end position of the first time period is the same as the end position of the target time slot configured with the PUSCH resource unit.
  • the target time slot is a time slot configured with a PUSCH resource unit.
  • the time domain position of the target time slot is later than the time domain position of the first PRACH time-frequency resource.
  • the terminal device can determine the first PRACH time-frequency resource according to the length of the first time period The time domain position of determines the time domain position of the target time slot.
  • the first time period is a time period associated with the target subframe, and the end position of the first time period is the same as the end position of the target subframe where the PUSCH resource unit is configured.
  • the target subframe is a subframe configured with PUSCH resource units.
  • the time domain position of the target subframe is later than the time domain position of the first PRACH time-frequency resource.
  • the terminal device can determine the first PRACH time-frequency resource according to the length of the first time period The time domain position of determines the time domain position of the target subframe.
  • the first PRACH time-frequency resource is the RO on time slot 3
  • the length of the first time period can be configured by the base station, for example, 3 ms.
  • the time domain position of the PO on time slot 4 is later than that of RO on time slot 3.
  • Time domain position, and the length of RO from time slot 3 is within 3ms, that is, time slot 4 is the time domain location (time slot) where the target time slot or target PUSCH resource unit is located, and the time period associated with time slot 4 (time period 0 ) Is the first time period, and the end position of time period 0 may be the end position of time slot 4.
  • time period 0 the preamble set associated with the RO on time slot 3 can be associated with the PUSCH resource unit set on time slot 4.
  • the length of the first time period can be configured by the base station, for example, 3 ms, and the time domain position of the PO on time slot 8 is later than that of the RO on time slot 7.
  • Time domain position, and the length of RO from time slot 7 is within 3ms, that is, time slot 8 is the time domain position (time slot) where the target time slot or the target PUSCH resource unit is located, and the time period associated with time slot 8 (time period 1 ) Is the first time period, and the end position of time period 1 may be the end position of time slot 8.
  • time period 1 the preamble set associated with the RO on time slot 7 can be associated with the PUSCH resource unit set on time slot 8.
  • the end position of the first time period is the same as the end position of the latest time slot among the N consecutive time slots, wherein each of the N consecutive time slots is configured with PUSCH resources Unit set, N is an integer greater than or equal to 2. If the next time slot of the target PUSCH resource unit is not configured with a PUSCH resource unit set, or the next time slot of the target time slot is not configured with a PUSCH resource unit set, then the end position of the first time period and the target time slot The end position is the same.
  • time slot 4 and time slot 9 and time slot 5, time slot 6 and time slot 1 are each configured.
  • time slot 5 and time slot 1 are each configured.
  • the first PRACH time-frequency resource is the RO on time slot 3
  • the length of the first time period may be configured by the base station, for example, 4 ms, and the terminal device can determine that the first PRACH time-frequency resource is located in the time slot configured with the PUSCH resource unit
  • the end position of the first time period (for example, time period 0) is continuously configured with PUSCH
  • the end position of the latest time slot in the time slots of the resource unit is the same, that is, the end position of the first time period is the end position of time slot 6.
  • the preamble set associated with the RO on time slot 3 and time slot 4 is associated with the PUSCH resource unit set on time slot 5 and time slot 6.
  • the length of the first time period can be configured by the base station, for example, 4 ms, and the terminal device can determine that the first PRACH time-frequency resource is in the time slot where the PUSCH resource unit is configured.
  • the end position of the first time period is the same as the end position of time slot 1.
  • the preamble set associated with the RO on time slot 9 is associated with the PUSCH resource unit set on time slot 1.
  • each of the N consecutive time slots can be configured with a PUSCH resource unit, each time slot can correspond to a time period, and the end position of the time period corresponding to each time slot is this The end position of the time slot, and the length of the time period corresponding to each time slot can be the same. Since the time periods corresponding to two consecutive time slots may overlap, in this case, the PRACH time-frequency resources in the first time period do not include the PRACH time-frequency resources that have been associated with the PUSCH resource unit set in the third time period.
  • the preamble set associated with the PRACH time-frequency resource in the first time period does not include the preamble that has been associated with the PUSCH resource unit in the third time period, and the end position of the third time period is later than the first time period.
  • time slot 3 For example, as shown in Figure 13B, assume that in each 10ms radio frame, one RO is configured on time slot 3, time slot 4, and time slot 9, and time slot 5, time slot 6 and time slot 1 are each configured There are two POs. If each time slot containing the PUSCH resource unit corresponds to a time period, the end position of the time period corresponding to each time slot is the end position of the time slot, and the length of each time period may be the same, for example, 3 ms. That is, time slot 5, time slot 6 and time slot 1 can each be associated with a time period, which is time period 0, time period 1, and time period 2, respectively. In time period 1, the PUSCH resource unit set on time slot 6 is associated with the preamble set associated with RO on time slot 4.
  • the PUSCH resource unit set on time slot 5 can be associated with the preamble set associated with RO on time slot 3 and time slot 4.
  • the preamble set associated with the RO on time slot 4 has been associated with the PUSCH resource unit set in time 1 (the third time period)
  • the PRACH time-frequency resource in time 0 does not include the RO on time slot 4
  • the associated preamble collection In time period 2, the preamble set associated with the RO on time slot 9 is associated with the PUSCH resource unit set on time slot 1.
  • the length of the first time period is the length of time between two time slots configured with PRACH time-frequency resources.
  • the starting position of the first time period is the starting position of each time slot configured with PRACH time-frequency resources.
  • each of the time slots 2, time slots 5, and time slots 8 in each 10ms wireless frame is configured with one RO, and time slots 3, 6 and 9 are each configured.
  • the length of the first time period is equal to the length between every two time slots configured with RO, and the start position of the first time period is the start position of each time slot configured with RO.
  • FIG. 15 shows multiple consecutive time periods, such as time period 0, time period 1, and time period 2, and the first time period may be any one of them.
  • the length of time period 0 and time period 1 is 3 ms
  • the starting positions are the starting positions of time slot 2 and time slot 5 respectively
  • the length of time period 2 is 4 ms
  • the starting position is the starting position of time slot 8.
  • the preamble set associated with RO on time slot 2 is associated with the PUSCH resource unit set on time slot 3; in time period 1, the preamble set associated with RO on time slot 5 is associated with time slot 6 A collection of PUSCH resource units. In time period 2, the preamble set associated with the RO on time slot 8 is associated with the PUSCH resource unit set on time slot 9.
  • the length of the first time period is the length of time between two time slots configured with PUSCH resource units, and the end position of the first time period is the end position of each time slot configured with PUSCH resource units.
  • time slot 2 and time slot 8 in each 10ms radio frame is configured with one RO
  • time slot 3 time slot 6 and time slot 9 are each configured with two ROs.
  • PO The length of the first time period is equal to the length between every two time slots configured with PO
  • the end position of the first time period is the end position of each time slot configured with PO.
  • FIG. 16 shows multiple consecutive time periods, such as time period 0, time period 1, and time period 2, and the first time period may be any one of them.
  • the length of time period 0 and time period 1 is 3 ms
  • the end positions are the end positions of time slot 6 and time slot 9 respectively.
  • the start positions of time period 0 and time period 1 are time slot 4 and time The start position of slot 7; the length of time period 2 is 4 ms, and the end position is the end position of time slot 3.
  • the start position of time period 2 is the start position of time slot 0.
  • the preamble set associated with RO on time slot 5 is associated with the PUSCH resource unit set on time slot 6; in time period 1, the preamble set associated with RO on time slot 8 is associated with time slot 9.
  • the set of PUSCH resource units; in time period 2, the preamble set associated with the RO on time slot 2 is associated with the set of PUSCH resource units on time slot 3.
  • the terminal device determines a PUSCH resource unit in the PUSCH resource unit set located in the first time period according to the determined preamble and association rule.
  • the association rule is used to determine the association/mapping/correspondence between the preamble and the PUSCH resource unit.
  • the preamble and PUSCH resource units in the first time period may be one-to-one association, or many-to-one association, or one-to-many association.
  • the association relationship between the preamble and the PUSCH resource unit in the first time period may be configured by the base station, or may be predefined, or calculated based on the number of preambles and the number of PUSCH resource units in the first time period.
  • the association relationship between the preamble and the PUSCH resource unit in different time periods in multiple time periods may be the same or different.
  • each RO is configured with 16 preambles and each PO is configured with 8 resource units
  • the association between the preamble and PUSCH resource units is based on the number of preambles and PUSCH resources in the first time period
  • the number of units is calculated, then in time slot 0, 32 preambles on time slot 2 and time slot 5 are mapped to 16 PUSCH resource units on time slot 6, each One preamble is mapped to one PUSCH resource unit; in time period 1, the 16 preambles on time slot 8 are mapped to 16 PUSCH resource units on time slot 1, each One preamble is mapped to one PUSCH resource unit; in time period 2, 32 preambles on time slot 2 and time slot 5 are mapped to 16 PUSCH resource units on time slot 6, each One preamble is mapped to one PUSCH resource unit.
  • the preamble associated with the PRACH time-frequency resource is only mapped to the PUSCH resource unit after its own time domain position.
  • these PRACH time-frequency resources or preambles are not used for msgA transmission.
  • the mapping relationship between the preamble and the PUSCH resource unit in the first time period may be a 1-to-1 mapping configured by the base station, or a predefined 1-to-1 mapping.
  • the preamble is only mapped to the PUSCH resource unit whose time domain resource is located on the PUSCH transmission opportunity after the PRACH transmission opportunity where it is located, then in the time period 0, 12 preambles on time slot 2 1 to 1 Map to the first 12 PUSCH resource units on time slot 3, 12 preambles on time slot 5 1-to-1 mapped to the first 12 PUSCH resource units on time slot 6, and 12 preambles on time slot 8 1-to-1
  • the first 12 PUSCH resource units mapped to time slot 9, and the last 4 PUSCH resource units on time slot 3, time slot 6, and time slot 9 are not mapped, and are not used for msgA transmission.
  • the terminal device sends the determined preamble on the first PRACH time-frequency resource, and uses the determined PUSCH resource unit to send uplink data.
  • the terminal device sends MSGA, and MSGA includes the preamble and uplink data determined by the terminal device.
  • the network device receives the preamble and uplink data sent by the terminal device.
  • the network device receives the preamble from the terminal device on the first PRACH time-frequency resource, where the first PRACH time-frequency resource is located in the first time period; the network device obtains the PUSCH resource from the PUSCH resource located in the first time period according to the preamble and the association rule
  • the PUSCH resource unit associated with the preamble is determined in the unit set, and the determined PUSCH resource unit is used to receive uplink data; wherein, the association rule is used to determine the association relationship between the preamble and the PUSCH resource unit.
  • the network device sends downlink control information.
  • the downlink control information is used to indicate the resource of the response information of the first random access procedure.
  • the terminal device detects downlink control information.
  • the terminal device searches for downlink control information (DCI) in the time-frequency resource of the PDCCH corresponding to the random access message.
  • DCI downlink control information
  • the terminal device receives response information on the resource indicated by the downlink control information.
  • the terminal device receives the response information on the resource of the response information indicated by the downlink control information.
  • the terminal device can receive the MAC PDU from the physical downlink shared channel (PDSCH) indicated by the DCI, and the MAC PDU contains response information.
  • the MAC PDU also includes the identification of the first random access request (for example, Preamble ID).
  • a terminal device when a terminal device sends a 2-step random access message (MSGA), it can first determine a preamble.
  • the determined preamble is associated with the first PRACH time-frequency resource, and the first PRACH time-frequency resource In the first time period, according to the determined preamble and an association rule for associating the preamble with the PUSCH resource unit, a PUSCH resource unit is determined from the PUSCH resource unit set in the first time period.
  • the terminal device sends the preamble determined by the terminal device on the first PRACH time-frequency resource, and uses the PUSCH resource unit determined by the terminal device to send uplink data.
  • the network device can determine the time period (for example, the first time period) where the PRACH time-frequency resource (for example, the first PRACH time-frequency resource) corresponding to the preamble is located, and then determine the PUSCH located in the first time period
  • the resource unit set further determines the PUSCH resource unit associated with the PUSCH resource unit set in the first time period of the preamble sent by the terminal device according to the association rule, thereby solving the problem that the network device cannot determine the PUSCH resource unit associated with the preamble.
  • an embodiment of the present application provides a method for sending a random access message, including:
  • the terminal device determines a preamble, the determined preamble is associated with a first PRACH time-frequency resource, and the first PRACH time-frequency resource is located in a first time period.
  • step 501 You can refer to the related description of step 501, which is not repeated here.
  • the terminal device determines a PUSCH resource unit from the PUSCH resource units located in the second time period according to the determined preamble and association rule. Among them, the association rule is used to associate the preamble with the PUSCH resource unit.
  • the preamble set located in the first time period is associated with the PUSCH resource unit set in the second time period corresponding to the first time period.
  • the first time period and the second time period have the same time domain length, the start position of the second time period is later than the start position of the first time period, and the second time period is after the first time period.
  • the start position of the second time period is different from the start position of the first time period by the time domain length of the first time period (or the time domain length of the second time period), it can be equivalent to the first time period.
  • the second time period is the next time period after the first time period.
  • the PRACH time domain resource configuration period is 10 ms, and one RO is configured on each of timeslot 2, timeslot 5, and timeslot 8 in each 10ms radio frame.
  • the PUSCH transmission opportunity is independently configured, with a period of 5ms, and two POs are configured on time slot 1 and time slot 6 in each 10ms radio frame.
  • the start position of the first time period is the start position of time slot 1 or time slot 6.
  • the start position of the second time period is the start position of time slot 6, that is, the first time period is time period 0
  • the second time period is For time period 1, the preamble set in time period 0 is associated with the PUSCH resource unit set in time period 1, that is, the preamble set associated with RO on time slot 2 and time slot 5 is associated with the PUSCH resource unit set on time slot 6 ;
  • the start position of the first time period is the start position of time slot 6
  • the start position of the second time period is the start position of the next 10ms time slot 1, that is, the first time period is time period 1.
  • the second time period is time period 2
  • the preamble set in time period 1 is associated with the PUSCH resource unit set in time period 2, that is, the preamble
  • the terminal device sends the determined preamble on the first PRACH time-frequency resource, and uses the determined PUSCH resource unit to send uplink data.
  • the terminal device sends MSGA, and MSGA includes the preamble and uplink data determined by the terminal device.
  • the network device receives the preamble and uplink data sent by the terminal device.
  • the network device receives the preamble from the terminal device on the first PRACH time-frequency resource, where the first PRACH time-frequency resource is in the first time period; the network device obtains the PUSCH resource from the PUSCH resource in the second time period according to the preamble and the association rule
  • the PUSCH resource unit associated with the preamble is determined in the unit set, and the determined PUSCH resource unit is used to receive uplink data; wherein the association rule is used to determine the association relationship between the preamble and the PUSCH resource unit, and the length of the second time period
  • the length of the first time period is the same, and the second time period is located after the first time period.
  • a terminal device when a terminal device sends a 2-step random access message (MSGA), it can first determine a preamble.
  • the determined preamble is associated with the first PRACH time-frequency resource, and the first PRACH time-frequency resource Located in the first time period; then according to the determined preamble and the association rule for associating the preamble with the PUSCH resource unit, determine a PUSCH resource unit in the PUSCH resource unit set in the second time period, and then the The preamble determined by the terminal device is sent on a PRACH time-frequency resource, and the uplink data is sent using the PUSCH resource unit determined by the terminal device.
  • MSGA 2-step random access message
  • the network device can determine the time period (for example, the first time period) where the PRACH time-frequency resource (for example, the first PRACH time-frequency resource) corresponding to the preamble is located, and then determine that it is located in the second time period (the second The PUSCH resource unit set in the time period later than the first time period) is further determined according to the association rules to determine the PUSCH resource unit associated with the preamble sent by the terminal device in the PUSCH resource unit set located in the second time period, thereby solving the problem of network equipment Unable to determine the PUSCH resource unit associated with the preamble.
  • the time period for example, the first time period
  • the PRACH time-frequency resource for example, the first PRACH time-frequency resource
  • FIG. 19 shows a possible structural schematic diagram of the apparatus 19 involved in the foregoing embodiment.
  • the apparatus may be a terminal device, and the terminal device includes: a determining unit 1901 And sending unit 1902.
  • the determining unit 1901 is configured to determine the first PRACH time-frequency resource, and the first PRACH time-frequency resource is located in the first time period; the determining unit 1901 is also configured to determine the first PRACH time-frequency resource associated with One or more of the preambles determine a preamble; the determining unit 1901 is further configured to determine a PUSCH resource unit in the PUSCH resource unit set located in the first time period according to the determined preamble and association rules, where the association rule is used to determine The association relationship between the preamble and the PUSCH resource unit; or, the determining unit 1901 is further configured to determine a PUSCH resource unit from the PUSCH resource unit set located in the second time period according to the determined preamble and the association rule, where the
  • the length of the second time period is the same as the length of the first time period, and the second time period is located after the first time period; the sending unit 1902 is used for the first PRACH
  • the determined preamble is sent on the time-frequency resource, and the determined PUSCH resource unit is used to send uplink data.
  • the determining unit 1901 is configured to execute the processes 501 and 502 in FIG. 5, and is configured to execute the processes 1801 and 1802 in FIG. 18.
  • the sending unit 1902 is used to support the terminal device to perform the process 503 in FIG. 5 and is used to support the terminal device to perform the process 1803 in FIG. 18.
  • the terminal device may further include a detection unit for performing the process 506 in FIG. 5; optionally, the terminal device may further include a receiving unit for performing the process 507 in FIG. 5.
  • all relevant content of each step involved in the above method embodiment can be cited in the function description of the corresponding function module, and will not be repeated here.
  • FIG. 20 shows a possible structural schematic diagram of the device 20 involved in the foregoing embodiment.
  • the device may be a network device, and the network device includes: a receiving unit 2001 And the determination unit 2002.
  • the receiving unit 2001 is configured to receive the preamble from the terminal device on the first PRACH time-frequency resource, where the first PRACH time-frequency resource is located in the first time period;
  • the determining unit 2002 is configured to The preamble and the association rule determine the PUSCH resource unit associated with the preamble from the PUSCH resource unit set located in the first time period, and use the determined PUSCH resource unit to receive uplink data through the receiving unit; wherein, the association rule Used to determine the association relationship between the preamble and the PUSCH resource unit.
  • the receiving unit 2001 and the determining unit 2002 are used to execute the process 504 in FIG. 5 to support the network device to execute the process 1804 in FIG. 18.
  • all relevant content of each step involved in the above method embodiment can be cited in the function description of the corresponding function module, and will not be repeated here.
  • the information output or received by the sending unit 1902 and the receiving unit 2001 may be in the form of baseband signals.
  • the sending unit 1902 and the receiving unit 2001 send or receive is a baseband signal carrying a preamble and/or uplink data.
  • the output or reception of the sending unit 1902 and the receiving unit 2001 may be radio frequency signals.
  • the sending unit 1902 and the receiving unit 2001 send or receive are radio frequency signals that carry preamble and/or uplink data.
  • the division of modules in the embodiments of the present application is illustrative, and is only a logical function division. In actual implementation, there may be other division methods.
  • the functional modules in the various embodiments of the present application may be integrated into one process. In the device, it can also exist alone physically, or two or more modules can be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules.
  • the receiving unit and the sending unit may be integrated into the transceiver unit.
  • 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 by software, it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, network equipment, user equipment, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (DVD)), or a semiconductor medium (for example, a solid state drive (SSD)) )Wait.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Les modes de réalisation de la présente invention relèvent du domaine des communications et concernent un procédé et un appareil d'envoi d'un message d'accès aléatoire susceptibles de régler le problème lié à l'impossibilité de déterminer une unité de ressource de PUSCH associée à un préambule. Le procédé comprend les étapes au cours desquelles : un dispositif terminal détermine un préambule, le préambule étant associé à une première ressource temps-fréquence de PRACH et la première ressource temps-fréquence de PRACH étant située dans une première période de temps; le dispositif terminal détermine une unité de ressource de PUSCH provenant d'un ensemble d'unités de ressources de PUSCH pendant la première période de temps en fonction du préambule déterminé et d'une règle d'association, la règle d'association étant utilisée pour déterminer une relation d'association entre le préambule et une unité de ressource de PUSCH; puis le dispositif terminal envoie le préambule déterminé sur la première ressource temps-fréquence de PRACH et envoie des données de liaison montante en utilisant l'unité de ressource de PUSCH déterminée. Les modes de réalisation de la présente invention sont appliqués à un scénario d'accès aléatoire en deux étapes.
PCT/CN2019/101215 2019-08-16 2019-08-16 Procédé et appareil d'envoi d'un message d'accès aléatoire WO2021031039A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CN2019/101215 WO2021031039A1 (fr) 2019-08-16 2019-08-16 Procédé et appareil d'envoi d'un message d'accès aléatoire
PCT/CN2019/116856 WO2021031391A1 (fr) 2019-08-16 2019-11-08 Procédé et appareil pour envoyer un message d'accès aléatoire
CN201980098779.6A CN114175774A (zh) 2019-08-16 2019-11-08 一种发送随机接入消息的方法和装置

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WO2018018472A1 (fr) * 2016-07-27 2018-02-01 Lenovo Innovations Limited (Hong Kong) Accès basé sur un préambule pour transmission en liaison montante
CN107889273B (zh) * 2016-09-30 2023-12-29 北京三星通信技术研究有限公司 随机接入的方法及相应设备
EP3481128A1 (fr) * 2017-11-03 2019-05-08 MediaTek Inc. Procédé de transmission et de réception de données dans une procédure d'accès aléatoire
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US20150043353A1 (en) * 2013-08-06 2015-02-12 Cellos Software Ltd Monitoring Probe for Identifying A User Plane Identifier of a User Device
CN106993335A (zh) * 2016-01-21 2017-07-28 中兴通讯股份有限公司 前导码发送、接收方法、装置、用户设备及基站
CN108811173A (zh) * 2017-05-05 2018-11-13 北京三星通信技术研究有限公司 随机接入方法、基站设备及用户设备

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