WO2021190471A1 - 随机接入方法、基站、用户设备、装置、介质 - Google Patents

随机接入方法、基站、用户设备、装置、介质 Download PDF

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Publication number
WO2021190471A1
WO2021190471A1 PCT/CN2021/082277 CN2021082277W WO2021190471A1 WO 2021190471 A1 WO2021190471 A1 WO 2021190471A1 CN 2021082277 W CN2021082277 W CN 2021082277W WO 2021190471 A1 WO2021190471 A1 WO 2021190471A1
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Prior art keywords
resources
pusch
mcs
tbs
uplink transmission
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PCT/CN2021/082277
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English (en)
French (fr)
Inventor
周雷
邢艳萍
曾二林
苗金华
傅婧
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大唐移动通信设备有限公司
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Priority to KR1020227037266A priority Critical patent/KR20220158802A/ko
Priority to US17/914,316 priority patent/US20230122052A1/en
Priority to EP21774969.6A priority patent/EP4132192A4/en
Priority to JP2022558197A priority patent/JP7437529B2/ja
Publication of WO2021190471A1 publication Critical patent/WO2021190471A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access
    • H04W74/0841Random access procedures, e.g. with 4-step access with collision treatment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/002Transmission of channel access control information
    • H04W74/004Transmission of channel access control information in the uplink, i.e. towards network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/02Selection of wireless resources by user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • H04W72/1263Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/002Transmission of channel access control information
    • H04W74/006Transmission of channel access control information in the downlink, i.e. towards the terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0866Non-scheduled access, e.g. ALOHA using a dedicated channel for access
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • H04L1/0038Blind format detection

Definitions

  • the present disclosure relates to the field of wireless communication technology, and in particular to a random access method, base station, user equipment, device, and medium.
  • LTE Long Term Evolution, Long Term Evolution
  • NR New Radio
  • FIG. 1 is a schematic diagram of the four-step competitive random access process (4-step RACH). As shown in Figure 1, the competitive random access process is divided into four steps, called 4-step RACH, as follows:
  • Msg1 (message 1): UE (User Equipment) selects random access preamble (random access preamble) and PRACH (Physical Random Access Channel) resources, and uses this PRACH resource to send to the base station The selected random access preamble.
  • UE User Equipment
  • PRACH Physical Random Access Channel
  • Msg2 (message 2): The base station receives the preamble and sends a random access response.
  • Msg3 (message 3): The UE sends uplink transmission on the UL grant (uplink scheduling information) specified by Msg2.
  • the content of Msg3 uplink transmission is different for different random access reasons. For example, for initial access, Msg3 transmits RRC (radio resource control). , Radio Resource Control) connection establishment request, the connected UE sends C-RNTI MAC CE (Cell Radio Network Temporary Identity Media Access Control Unit; C-RNTI: Cell Radio Network Temporary Identity, Cell-Radio Network) in Msg3 Temporary Identifier; MAC: Media Access Control, Media Access Control; CE: Control Unit, Control Element).
  • RRC radio resource control
  • C-RNTI Cell Radio Network Temporary Identity, Cell-Radio Network
  • MAC Media Access Control
  • CE Control Unit, Control Element
  • Msg4 (message 4): a contention resolution message.
  • the UE judges whether the random access is successful according to Msg4.
  • the CCCH and MAC CE Common Control Channel Media Access Control Unit carried by Msg4 that contains the RRC signaling content of Msg3; CCCH: Common Control Channel, Common Control Channel;
  • Msg4 uses the PDCCH (Physical Downlink Control Channel) that uniquely identifies the C-RNTI in the UE cell for scheduling, and this PDCCH can achieve contention resolution.
  • the temporary C-RNTI is converted to the unique UE identification C-RNTI of the UE in the cell after the contention is resolved successfully.
  • the 2-step RACH (two-step RACH) will be described below.
  • a two-step random access process (2-step RACH) is derived on the basis of 4-step RACH for competitive random access.
  • Figure 2 shows the two-step competitive random access process (2-step RACH).
  • step RACH schematic diagram, the process is shown in Figure 2, where msgA (message A) is divided into preamble transmission on PRACH and data transmission on PUSCH (Physical Uplink Shared Channel), which is equivalent to 4-step RACH Msg1 plus Msg3; msgB (message B) random access response and contention resolution, which is equivalent to Msg2 plus Msg4 in 4-step RACH. Because msgB contains UE contention resolution information, its size must be different from Msg2.
  • PUSCH Physical Uplink Shared Channel
  • the base station may send multiple random access responses (or data messages) to the UE, such as:
  • Random access sequence number random access ID response
  • uplink data transmission can only support small data transmission.
  • the disadvantage of the related technology is that the 2-step RACH in the related technology does not support the transmission of different data blocks.
  • the present disclosure provides a random access method, base station, user equipment, device, and medium to solve the problem that when a UE initiates random access to the network, in a non-connected state, it cannot be flexibly configured according to the needs of different users. Or multiple users provide different data block transmission problems.
  • Some embodiments of the present disclosure provide a random access method, including:
  • the network side receives the MSGA sent by the terminal.
  • the uplink transmission resource for sending MSGA is configured on the network side.
  • the size of the uplink data block sent on each uplink transmission resource is different.
  • the block size selects one of the uplink sending resources to send MSGA;
  • configuring the uplink transmission resources on the network side includes: configuring PRACH resources and PUSCH resources, and the mapping relationship between PRACH resources and PUSCH resources;
  • each uplink data block size one or more MCSs or TBSs and time-frequency resources of uplink transmission resources corresponding to each MCS or TBS are allocated.
  • mapping relationship between PRACH resources and PUSCH resources is established according to the following formula:
  • N preamble ceil(T preamble / ⁇ T PUSCH )
  • ceil is the smallest integer function that returns greater than or equal to the specified expression
  • T PUSCH T PO *N DMRSperPO
  • T PO nrofslotsMsgAPUSCH*nrofMsgAPOperSlot
  • N DMRSperPO is obtained from msgA-DMRS-Configuration
  • N POperTBS ceil(T PO /T TBS or T MCS )
  • N POperTBS is the number of PUSCH transmission resources corresponding to each TBS
  • T TBS is the total number of TBS indexes
  • T MCS is the total number of MCS indexes.
  • N preamble the number of Preamble indexes or the number of PRACH resources corresponding to each PUSCH resource in a cycle
  • T preamble in a period, the total number of Preamble indexes or the total number of PRACH resources;
  • T PUSCH the total number of PUSCH resources in a period
  • T PO In a period, the total number of PUSCH transmission opportunities
  • nrofslotsMsgAPUSCH In a period, all the total number of time slots that can carry PUSCH transmission;
  • nrofMsgAPOperSlot the number of PUSCH transmission slots in each slot
  • N DMRSperPO the number of DMRS carried in each PUSCH transmission slot
  • The PUSCH resource aggregation level in the TPO in a period, and the value is ⁇ 1.
  • the allocation relationship between the TBS index sequence number or the MCS index sequence number and the uplink transmission resources is:
  • jTBSindex or jMCSindex mod(kPUSCHindex, T TBS or T MCS ); or,
  • N POperTBS Starting from the lowest TBS index or MCS index, assign N POperTBS to each TBS index or MCS index from low to high;
  • N POperTBS is the number of PUSCH transmission resources corresponding to each TBS or MCS;
  • T TBS is the total number of TBS indexes;
  • T PO is the total number of PUSCH transmission opportunities in a period;
  • T MCS is the total number of MCS indexes.
  • the network side is configured in one of the following ways or a combination:
  • the network side configures uplink transmission resources and different TBS index sequence numbers or MCS index sequence numbers, where the network side and UE pre-appoint the mapping relationship between TBS index sequence numbers or MCS index sequence numbers and uplink transmission resources; or,
  • the network side configures multiple MCS indexes that can be sent on any uplink transmission resource in MSGA, and different TBS index sequence numbers or MCS index sequence numbers. Among them, the network does not allocate exclusive MSGA uplink transmission resources for each TBS or MCS. The network side blindly decodes the coding modulation mode on the uplink transmission resources; or,
  • the network side configures the uplink transmission resource and the mapping relationship between the uplink transmission resource and the TBS index sequence number or the MCS index sequence number, wherein the network side informs the UE of the mapping relationship between the uplink transmission resource and the TBS index sequence number or the MCS index sequence number through broadcast.
  • the network side indicates the mapping relationship between the UE's TBS index or MCS index and uplink transmission resources in one of the following ways or a combination:
  • the uplink transmission resource number is preset, the mapping relationship between the TBS index or the MCS index and the uplink transmission resource number is preset, and the mapping relationship is indicated by the uplink transmission resource number; or,
  • the TBS index or MCS index indicated by the preset broadcast can be sent on any uplink transmission resource, and the TBS index or MCS index is indicated by broadcasting; or,
  • PRACH resources are allocated in groups, and PUSCH resources are allocated in groups, where:
  • One set of PRACH resources corresponds to at least two sets of PUSCH resources; or,
  • a group of PRACH resources corresponds to a group of PUSCH resources.
  • each PRACH resource in a set of PRACH resources corresponds to one PUSCH resource in each set of PUSCH resources;
  • a group of PRACH resources is divided into several groups of PRACH resources, and each group of PRACH resources corresponds to a group of PUSCH resources.
  • Some embodiments of the present disclosure provide a random access method, including:
  • the terminal side acquires the uplink transmission resources for sending MSGA, where the uplink transmission resources for sending MSGA are configured on the network side, there are at least two uplink transmission resources, and the uplink data block size sent on each uplink transmission resource is different;
  • the terminal selects one of the uplink transmission resources according to the size of the uplink data block to be sent;
  • the terminal sends MSGA to the network side on the selected uplink sending resource.
  • configuring the uplink transmission resources on the network side includes: configuring PRACH resources and PUSCH resources, and the mapping relationship between PRACH resources and PUSCH resources;
  • the network side allocates one or more MCSs or TBSs for each type of uplink data block size, and the time-frequency resources of the uplink transmission resources corresponding to each MCS or TBS.
  • the terminal determines the mapping relationship between PRACH resources and PUSCH resources according to the following formula:
  • N preamble ceil(T preamble / ⁇ T PUSCH )
  • ceil is the smallest integer function that returns greater than or equal to the specified expression
  • T PUSCH T PO *N DMRSperPO
  • T PO nrofslotsMsgAPUSCH*nrofMsgAPOperSlot
  • N DMRSperPO is obtained from msgA-DMRS-Configuration
  • N POperTBS ceil(T PO /T TBS or T MCS )
  • N POperTBS is the number of PUSCH transmission resources corresponding to each TBS
  • T TBS is the total number of TBS indexes
  • T MCS is the total number of MCS indexes.
  • N preamble the number of Preamble indexes or the number of PRACH resources corresponding to each PUSCH resource in a cycle
  • T preamble in a period, the total number of Preamble indexes or the total number of PRACH resources;
  • T PUSCH the total number of PUSCH resources in a period
  • T PO In a period, the total number of PUSCH transmission opportunities
  • nrofslotsMsgAPUSCH In a period, all the total number of time slots that can carry PUSCH transmission;
  • nrofMsgAPOperSlot the number of PUSCH transmission slots in each slot
  • The PUSCH resource aggregation level in the TPO in a period, and the value is ⁇ 1.
  • the allocation relationship between the TBS index sequence number or the MCS index sequence number and the uplink transmission resources is:
  • jTBSindex or jMCSindex mod(kPUSCHindex, T TBS or T MCS ); or,
  • N POperTBS Starting from the lowest TBS index or MCS index, assign N POperTBS to each TBS index or MCS index from low to high;
  • N POperTBS is the number of PUSCH transmission resources corresponding to each TBS or MCS;
  • T TBS is the total number of TBS indexes;
  • T PO is the total number of PUSCH transmission opportunities in a period;
  • T MCS is the total number of MCS indexes.
  • the terminal determines the configuration of the network side in one of the following ways or a combination:
  • the terminal determines the uplink transmission resource configured on the network side, and the TBS or MCS according to the pre-arranged TBS index sequence number or the mapping relationship between the MCS index sequence number and the uplink transmission resource with the network side; or,
  • the terminal determines the corresponding relationship with the uplink transmission resources, and determines to send MSGA on any uplink transmission resource in the MSGA configured on the network side; or,
  • the terminal determines the uplink transmission resource configured on the network side and the TBS or MCS according to the mapping relationship between the uplink transmission resource broadcasted by the network side and the TBS index sequence number or the MCS index sequence number.
  • the terminal determines the uplink transmission resources configured on the network side, as well as TBS or MCS, including:
  • the terminal selects one of the uplink transmission resources according to the size of the uplink data block to be transmitted and determines the corresponding TBS or MCS.
  • the terminal determines the uplink transmission resources configured on the network side, as well as TBS or MCS, including:
  • the terminal selects one of the uplink transmission resources according to the size of the uplink data block to be transmitted and determines the corresponding TBS or MCS.
  • the terminal determines the corresponding TBS or MCS, including:
  • the terminal determines the corresponding TBS
  • the terminal selects one or more MCS levels that can be matched according to RSRP and/or SINR, and for multiple matched MCS levels, selects the lowest MCS level as the final MCS level to be sent .
  • the terminal randomly selects an uplink transmission resource from them, or selects an uplink transmission resource according to the time-frequency resource timing of the uplink transmission resource.
  • the terminal determines the mapping relationship between the TBS index or the MCS index and the uplink transmission resource according to one of the following methods or an indication of a combination of the following methods:
  • the TBS index or MCS index indicated by the broadcast it is determined that the TBS index or MCS index can be sent on any uplink transmission resource, where it is preset that the TBS index or MCS index indicated by the broadcast can be sent on any uplink transmission resource; or,
  • PRACH resources are allocated in groups, and PUSCH resources are allocated in groups, where:
  • One set of PRACH resources corresponds to at least two sets of PUSCH resources; or,
  • a group of PRACH resources corresponds to a group of PUSCH resources.
  • each PRACH resource in a set of PRACH resources corresponds to one PUSCH resource in each set of PUSCH resources;
  • a group of PRACH resources is divided into several groups of PRACH resources, and each group of PRACH resources corresponds to a group of PUSCH resources.
  • Some embodiments of the present disclosure provide a base station, and the base station includes:
  • the processor is used to read the program in the memory and execute the following process:
  • Transceiver used to receive and send data under the control of the processor.
  • configuring uplink transmission resources includes: configuring PRACH resources and PUSCH resources, and the mapping relationship between PRACH resources and PUSCH resources;
  • each uplink data block size one or more MCSs or TBSs and time-frequency resources of uplink transmission resources corresponding to each MCS or TBS are allocated.
  • mapping relationship between PRACH resources and PUSCH resources is established according to the following formula:
  • N preamble ceil(T preamble / ⁇ T PUSCH )
  • ceil is the smallest integer function that returns greater than or equal to the specified expression
  • T PUSCH T PO *N DMRSperPO
  • T PO nrofslotsMsgAPUSCH*nrofMsgAPOperSlot
  • N DMRSperPO is obtained from msgA-DMRS-Configuration
  • N POperTBS ceil(T PO /T TBS or T MCS )
  • N POperTBS is the number of PUSCH transmission resources corresponding to each TBS
  • T TBS is the total number of TBS indexes
  • T MCS is the total number of MCS indexes.
  • N preamble the number of Preamble indexes or the number of PRACH resources corresponding to each PUSCH resource in a cycle
  • T preamble in a period, the total number of Preamble indexes or the total number of PRACH resources;
  • T PUSCH the total number of PUSCH resources in a period
  • T PO In a period, the total number of PUSCH transmission opportunities
  • nrofslotsMsgAPUSCH In a period, all the total number of time slots that can carry PUSCH transmission;
  • nrofMsgAPOperSlot the number of PUSCH transmission slots in each slot
  • N DMRSperPO the number of DMRS carried in each PUSCH transmission slot
  • The PUSCH resource aggregation level in the TPO in a period, and the value is ⁇ 1.
  • the allocation relationship between the TBS index sequence number or the MCS index sequence number and the uplink transmission resources is:
  • jTBSindex or jMCSindex mod(kPUSCHindex, T TBS or T MCS ); or,
  • N POperTBS Starting from the lowest TBS index or MCS index, assign N POperTBS to each TBS index or MCS index from low to high;
  • N POperTBS is the number of PUSCH transmission resources corresponding to each TBS or MCS;
  • T TBS is the total number of TBS indexes;
  • T PO is the total number of PUSCH transmission opportunities in a period;
  • T MCS is the total number of MCS indexes.
  • the network does not allocate exclusive MSGA uplink transmission resources for each TBS or MCS, and the network side Blindly decode the coding modulation mode on the uplink transmission resources; or,
  • mapping relationship between the UE TBS index or MCS index and the uplink transmission resource is indicated in one of the following ways or a combination:
  • the uplink transmission resource number is preset, the mapping relationship between the TBS index or the MCS index and the uplink transmission resource number is preset, and the mapping relationship is indicated by the uplink transmission resource number; or,
  • the TBS index or MCS index indicated by the preset broadcast can be sent on any uplink transmission resource, and the TBS index or MCS index is indicated by broadcasting; or,
  • PRACH resources are allocated in groups, and PUSCH resources are allocated in groups, where:
  • One set of PRACH resources corresponds to at least two sets of PUSCH resources; or,
  • a group of PRACH resources corresponds to a group of PUSCH resources.
  • each PRACH resource in a set of PRACH resources corresponds to one PUSCH resource in each set of PUSCH resources;
  • a group of PRACH resources is divided into several groups of PRACH resources, and each group of PRACH resources corresponds to a group of PUSCH resources.
  • Some embodiments of the present disclosure provide a user equipment, and the user equipment includes:
  • the processor is used to read the program in the memory and execute the following process:
  • the uplink sending resources for sending MSGA where the uplink sending resources for sending MSGA are configured on the network side, there are at least two uplink sending resources, and the size of the uplink data block sent on each uplink sending resource is different;
  • Transceiver used to receive and send data under the control of the processor.
  • configuring the uplink transmission resources on the network side includes: configuring PRACH resources and PUSCH resources, and the mapping relationship between PRACH resources and PUSCH resources;
  • the network side allocates one or more MCSs or TBSs for each type of uplink data block size, and the time-frequency resources of the uplink transmission resources corresponding to each MCS or TBS.
  • mapping relationship between PRACH resources and PUSCH resources is determined according to the following formula:
  • N preamble ceil(T preamble / ⁇ T PUSCH )
  • ceil is the smallest integer function that returns greater than or equal to the specified expression
  • T PUSCH T PO *N DMRSperPO
  • T PO nrofslotsMsgAPUSCH*nrofMsgAPOperSlot
  • N DMRSperPO is obtained from msgA-DMRS-Configuration
  • N POperTBS ceil(T PO /T TBS or T MCS )
  • N POperTBS is the number of PUSCH transmission resources corresponding to each TBS
  • T TBS is the total number of TBS indexes
  • T MCS is the total number of MCS indexes.
  • N preamble the number of Preamble indexes or the number of PRACH resources corresponding to each PUSCH resource in a cycle
  • T preamble in a period, the total number of Preamble indexes or the total number of PRACH resources;
  • T PUSCH the total number of PUSCH resources in a period
  • T PO In a period, the total number of PUSCH transmission opportunities
  • nrofslotsMsgAPUSCH In a cycle, all the total number of time slots that can carry PUSCH transmission;
  • nrofMsgAPOperSlot the number of PUSCH transmission slots in each slot
  • N DMRSperPO the number of DMRS carried in each PUSCH transmission slot
  • The PUSCH resource aggregation level in the TPO in a period, and the value is ⁇ 1.
  • the allocation relationship between the TBS index sequence number or the MCS index sequence number and the uplink transmission resources is:
  • jTBSindex or jMCSindex mod(kPUSCHindex, T TBS or T MCS ); or,
  • N POperTBS Starting from the lowest TBS index or MCS index, assign N POperTBS to each TBS index or MCS index from low to high;
  • N POperTBS is the number of PUSCH transmission resources corresponding to each TBS or MCS;
  • T TBS is the total number of TBS indexes;
  • T PO is the total number of PUSCH transmission opportunities in a period;
  • T MCS is the total number of MCS indexes.
  • the network side configuration is determined in one of the following ways or a combination:
  • different TBS index sequence numbers or MCS index sequence numbers the corresponding relationship with the uplink transmission resources, and, determine to send MSGA on any uplink transmission resource in the MSGA configured on the network side; or,
  • the uplink transmission resource configured on the network side and the TBS or MCS are determined according to the mapping relationship between the uplink transmission resource broadcasted by the network side and the TBS index sequence number or the MCS index sequence number.
  • determining the uplink transmission resources configured on the network side, as well as TBS or MCS includes:
  • one of the uplink transmission resources is selected and the corresponding TBS or MCS is determined.
  • determining the uplink transmission resources configured on the network side, as well as TBS or MCS includes:
  • one of the uplink transmission resources is selected and the corresponding TBS or MCS is determined.
  • determine the corresponding TBS or MCS including:
  • the MCS in the broadcast signaling is multiple MCS levels
  • one or more matching MCS levels are selected according to RSRP and/or SINR, and for multiple matching MCS levels, the lowest MCS level is selected as the final MCS level to be sent.
  • one uplink transmission resource is randomly selected from them, or one uplink transmission resource is selected according to the time-frequency resource timing of the uplink transmission resource.
  • mapping relationship between the TBS index or the MCS index and the uplink transmission resource is determined according to the instructions of the network side in one of the following ways or a combination thereof:
  • the TBS index or MCS index indicated by the broadcast it is determined that the TBS index or MCS index can be sent on any uplink transmission resource, where it is preset that the TBS index or MCS index indicated by the broadcast can be sent on any uplink transmission resource; or,
  • PRACH resources are allocated in groups, and PUSCH resources are allocated in groups, where:
  • One set of PRACH resources corresponds to at least two sets of PUSCH resources; or,
  • a group of PRACH resources is divided into several groups of PRACH resources, and each group of PRACH resources corresponds to a group of PUSCH resources.
  • Some embodiments of the present disclosure provide a random access device, including:
  • the network side receiving module is used to receive the MSGA sent by the terminal.
  • the uplink sending resource for sending MSGA is configured on the network side. There are at least two uplink sending resources. The size of the uplink data block sent on each uplink sending resource is different. Select one of the uplink transmission resources to send MSGA according to the size of the uplink data block to be sent;
  • the network side sending module is used to send MSGB to the terminal.
  • Some embodiments of the present disclosure provide a random access device, including:
  • the terminal side acquisition module is used to acquire the uplink transmission resources for sending MSGA.
  • the uplink transmission resources for sending MSGA are configured on the network side. There are at least two uplink transmission resources. The size of the uplink data block sent on each uplink transmission resource is different. ;
  • the terminal-side selection module is used to select one of the uplink transmission resources according to the size of the uplink data block to be sent;
  • the terminal side sending module is used to send MSGA to the network side on the selected uplink sending resource.
  • a computer-readable storage medium stores a program for executing the above-mentioned random access method.
  • the network side configures multiple uplink transmission resources for sending MSGA during the random access process
  • the size of the uplink data block sent on each uplink transmission resource is different, and the terminal Then, one of the uplink sending resources can be selected according to the size of the sent uplink data block to send MSGA. Since the terminal can select the corresponding uplink transmission resource according to the size of the data block that it needs to send, it can flexibly provide different data block transmission for one or more users according to the needs of different users.
  • Figure 1 is a schematic diagram of a four-step competitive random access process (4-step RACH) in the background art
  • FIG. 2 is a schematic diagram of a two-step competitive random access process (2-step RACH) in the background art
  • FIG. 3 is a schematic diagram of the implementation process of the random access method on the network side in some embodiments of the present disclosure
  • FIG. 4 is a schematic diagram of the implementation process of the random access method on the terminal side in some embodiments of the present disclosure
  • FIG. 5 is a schematic diagram of resource allocation in some embodiments of the present disclosure.
  • FIG. 6 is a schematic diagram of PRACH and PUSCH time-frequency resource allocation and corresponding relationship in Embodiment 1 of the disclosure
  • FIG. 7 is a schematic diagram of one-to-one mapping of two groups of PRACH group and PUSCH group resources in some embodiments of the present disclosure
  • FIG. 8 is a schematic diagram of one-to-one mapping of multiple groups of PRACH group and PUSCH group resources in some embodiments of the present disclosure
  • FIG. 9 is a schematic diagram of one-to-one mapping of multiple groups of PRACH group and PUSCH group resources in some embodiments of the present disclosure.
  • FIG. 10 is a schematic diagram of one-to-many mapping of multiple groups of PRACH group and PUSCH group resources in some embodiments of the present disclosure
  • FIG. 11 is a schematic diagram of one-to-many mapping method 1 of PRACH group and PUSCH group resources in some embodiments of the present disclosure
  • FIG. 12 is a schematic diagram of the one-to-many mapping method 2 between PRACH group and PUSCH group resources in some embodiments of the present disclosure
  • FIG. 13 is a schematic diagram of PRACH and PUSCH time-frequency resource allocation and corresponding relationship in Embodiment 2 of the disclosure
  • FIG. 14 is a schematic diagram of PRACH and PUSCH time-frequency resource allocation and corresponding relationship of MsgA in RACH in Embodiment 3 of the disclosure;
  • 16 is a schematic diagram of PRACH and PUSCH time-frequency resource allocation and corresponding relationship in method 1 of method (3) in embodiment 4 of the disclosure;
  • FIG. 17 is a schematic diagram of PRACH and PUSCH time-frequency resource allocation and corresponding relationship in manner (3) manner 2 in embodiment 4 of the disclosure;
  • FIG. 18 is a schematic diagram of the process of selecting PRACH and PUSCH resources based on MC Slevel on the terminal side in Embodiment 5 of the present disclosure
  • FIG. 19 is a schematic diagram of a process of selecting PRACH and PUSCH resources based on MCS level on the terminal side according to Embodiment 7 of the disclosure.
  • FIG. 20 is a schematic diagram of a PRACH and PUSCH resource selection process based on MCS level on the terminal side in Embodiment 8 of the present disclosure
  • FIG. 21 is a schematic diagram of the structure of a base station in some embodiments of the present disclosure.
  • FIG. 22 is a schematic diagram of a UE structure in some embodiments of the present disclosure.
  • the number of bits supported by the PUSCH for uplink data transmission in the MsgA of the 2-step RACH is limited to 56 bits or 72 bits. In the non-connected state, the network does not support the transmission of large data blocks (600-800 bits or even 1000 bits).
  • the related technology does not support the transmission of multiple data block types.
  • the network supports only pre-allocating a fixed coding modulation scheme MCS (Modulation and Coding Scheme) and fixed time-frequency resources to the PUSCH to support a small amount of bit transmission.
  • MCS Modulation and Coding Scheme
  • the description will be made from the implementation of the UE and the base station respectively, and then an example of the implementation of the two will also be given to better understand the implementation of the solutions given in some embodiments of the present disclosure.
  • This way of explanation does not mean that the two must be implemented in cooperation or separately.
  • the UE and the base station are implemented separately, they also solve the problems of the UE side and the base station side respectively, and when the two are used in combination, they will Get better technical results.
  • Figure 3 is a schematic diagram of the implementation process of the random access method on the network side. As shown in the figure, it may include:
  • Step 301 The network side receives the MSGA sent by the terminal.
  • the uplink transmission resources for sending MSGA are configured on the network side. There are at least two uplink transmission resources. The size of the uplink data block sent on each uplink transmission resource is different. Choose one of the uplink transmission resources to send MSGA;
  • Step 302 The network side sends the MSGB to the terminal.
  • Figure 4 is a schematic diagram of the implementation process of the random access method on the terminal side. As shown in the figure, it may include:
  • Step 401 The terminal side acquires uplink transmission resources for sending MSGA, where the uplink transmission resources for sending MSGA are configured on the network side, there are at least two uplink transmission resources, and the uplink data block size sent on each uplink transmission resource is different;
  • Step 402 The terminal selects one of the uplink transmission resources according to the size of the uplink data block to be sent.
  • Step 403 The terminal sends MSGA to the network side on the selected uplink sending resource.
  • MSGA in the 2-step RACH process on the network side can support multiple (including more than two) uplink data block sizes (from tens of bits to thousands of bits) simultaneous transmission through network configuration or physical layer Mapping, allocating different data blocks to one or more MCS and corresponding time-frequency resources.
  • the network is also configured with the mapping relationship between PRACH resources in MSGA and PUSCH resources, or the PRACH resources in MSGA predetermined and agreed upon by the network and the terminal Mapping relationship with PUSCH resources.
  • the terminal calculates the carrying capacity of each uplink transmission resource of MSGA according to the network configuration and compares it with its own actual transmission data, finds a suitable MSGA uplink transmission resource and sends the uplink data.
  • configuring the uplink transmission resources on the network side includes: configuring PRACH resources and PUSCH resources, and the mapping relationship between PRACH resources and PUSCH resources;
  • the network side allocates one or more MCSs or TBSs for each type of uplink data block size, and the time-frequency resources of the uplink transmission resources corresponding to each MCS or TBS.
  • a process mainly includes four steps:
  • the network configures multiple MSGA uplink transmission resources to support simultaneous transmission of more than two uplink data block sizes (from tens of bits to thousands of bits).
  • Uplink transmission resources include PRACH resources and PUSCH resources, and the network is configured with PRACH resources and PUSCH resources and the mapping relationship. At the same time, one or more MCS and corresponding time-frequency resources are allocated for multiple uplink data block sizes (more than two types).
  • the network receives MSGA from the terminal.
  • the network sends MSGB to the terminal; that is, RAR (random-access-response) is sent to the terminal.
  • a process mainly includes three steps:
  • the UE obtains multiple sets of MSGA configurations on the network side;
  • the UE selects a set of MSG A configuration based on specific rules, such as RSRP (Reference Signal Received Power), SINR (Signal to Interference plus Noise Ratio), and the size of the transmitted data To choose
  • RSRP Reference Signal Received Power
  • SINR Signal to Interference plus Noise Ratio
  • the UE performs MSGA transmission according to the selected configuration.
  • Figure 5 is a schematic diagram of resource allocation. As shown in the figure, suppose that there are three types of uplink data block sizes that need to be sent through MSGA uplink transmission resources, as shown in the schematic diagram: Data1 is 50-70 bits, Data2 is 300 bits, and Data3 It is 1000 bits, as shown in the figure, the corresponding uplink transmission resources PUSCH in MSGA are:
  • mapping relationship between PRACH resources and PUSCH resources can be established according to the following formula:
  • N preamble ceil(T preamble / ⁇ T PUSCH )
  • ceil is the smallest integer function that returns greater than or equal to the specified expression
  • T PUSCH T PO *N DMRSperPO
  • T PO nrofslotsMsgAPUSCH*nrofMsgAPOperSlot
  • N DMRSperPO is obtained from msgA-DMRS-Configuration
  • N POperTBS ceil(T PO /T TBS or T MCS )
  • N POperTBS is the number of PUSCH transmission resources corresponding to each TBS
  • T TBS is the total number of TBS indexes
  • T MCS is the total number of MCS indexes.
  • N preamble the number of Preamble indexes or the number of PRACH resources corresponding to each PUSCH resource in a cycle
  • T preamble in a period, the total number of Preamble indexes or the total number of PRACH resources;
  • T PUSCH the total number of PUSCH resources in a period
  • T PO In a period, the total number of PUSCH transmission opportunities
  • nrofslotsMsgAPUSCH In a cycle, all the total number of time slots that can carry PUSCH transmission;
  • nrofMsgAPOperSlot the number of PUSCH transmission slots in each slot
  • N DMRSperPO the number of DMRS (demodulated reference signals) carried in each PUSCH transmission slot
  • The PUSCH resource aggregation level in the TPO in a period, and the value is ⁇ 1.
  • the allocation relationship between the TBS index sequence number or the MCS index sequence number and the uplink transmission resources may be:
  • jTBSindex or jMCSindex mod(kPUSCHindex, T TBS or T MCS ); or,
  • N POperTBS Starting from the lowest TBS index or MCS index, assign N POperTBS to each TBS index or MCS index from low to high;
  • N POperTBS is the number of PUSCH transmission resources corresponding to each TBS or MCS;
  • T TBS is the total number of TBS indexes;
  • T PO is the total number of PUSCH transmission opportunities in a period;
  • T MCS is the total number of MCS indexes.
  • TBS or MCS corresponding to PUSCH can be implemented as follows:
  • the principle is to start with the lowest PUSCH slot index, sort the PUSCH occurrence in the frequency domain from low to high, and then follow the PUSCH slot index from low to high;
  • N POperTBS ceil (T PO /T TBS ) at the same time
  • NPOperTBS is the number of PUSCH transmission resources corresponding to each TBS
  • TTBS is TBS The total number of indexes; in order to reduce the influence of frequency domain fading channels, the matching formula of TBS index and PUSCH is as follows: The jth TBS index corresponding to the kth PUSCH transmission resource:
  • jTBSindex or jMCSindex mod(kPUSCHindex, T TBS or T MCS );
  • TBS can be equivalently replaced by MCS.
  • the network side can be configured in one of the following ways or a combination:
  • the network side configures uplink transmission resources and different TBS index sequence numbers or MCS index sequence numbers, where the network side and UE pre-appoint the mapping relationship between TBS index sequence numbers or MCS index sequence numbers and uplink transmission resources; or,
  • the network side configures multiple MCS indexes that can be sent on any uplink transmission resource in MSGA, and different TBS index sequence numbers or MCS index sequence numbers. Among them, the network does not allocate exclusive MSGA uplink transmission resources for each TBS or MCS. The network side blindly decodes the coding modulation mode on the uplink transmission resources; or,
  • the network side configures the uplink transmission resource and the mapping relationship between the uplink transmission resource and the TBS index sequence number or the MCS index sequence number, wherein the network side informs the UE of the mapping relationship between the uplink transmission resource and the TBS index sequence number or the MCS index sequence number through broadcast.
  • the network side broadcasts the specific information and quantity of the TBS or MCS that needs to be supported, as well as the MSGA uplink transmission resources.
  • the network side broadcasts the specific information and quantity of the TBS or MCS that needs to be supported, as well as the MSGA uplink transmission resources.
  • the network side configures total MSGA uplink transmission resources (including preamble resources and PUSCH uplink transmission resources), and their corresponding different TBS index sequence numbers or MCS index sequence numbers. In this manner, the network side and the UE need to agree on the mapping relationship between the TBS index sequence number or the MCS index sequence number and the MSGA uplink transmission resources.
  • MCS index sequence numbers configured on the network side, all of these MCSs can be sent on any uplink sending resource in MSGA.
  • the network does not need to allocate dedicated uplink transmission resources in MSGA for each MCS.
  • the network side in this mode needs to blindly decode the modulation mode on the uplink transmission resources.
  • the network side directly broadcasts the TBS index sequence number or MCS index sequence number and the corresponding MSGA uplink transmission resources (including: preamble resource + PUSCH uplink transmission resource). In this way, the network side and the UE do not need to agree on the TBS index sequence number or MCS index sequence number and MSGA The mapping relationship of uplink transmission resources.
  • the UE finds the corresponding uplink transmission resource according to the configuration broadcast on the network side.
  • the first network configuration method :
  • the terminal determines the uplink transmission resources configured on the network side, as well as TBS or MCS, including:
  • the terminal selects one of the uplink transmission resources according to the size of the uplink data block to be transmitted and determines the corresponding TBS or MCS.
  • the UE When the UE receives the specific information and quantity of TBS/MCS contained in the broadcast signaling, as well as the preamble resource allocation and PUSCH resource allocation in MSGA, the UE will know the specific location and the specific location of the MSGA uplink transmission resources currently configured on the network. The total number, as well as the specific information and number of TBS/MCS currently indicated by the network.
  • the UE can calculate how many information bits can be carried by each uplink transmission resource on MSGA according to the mapping relationship established between each resource number and the TBS/MCS sequence number pre-arranged with the network.
  • the UE calculates the number of bits to be sent according to its own business needs, compares it with the number of bits carried by each resource, and finds the transmission resource corresponding to ⁇ the number of bits it sends and is closest to the number of bits it needs to send.
  • the terminal determines the corresponding TBS or MCS, including:
  • the terminal determines the corresponding TBS
  • the terminal selects one or more MCS levels that can be matched according to RSRP and/or SINR, and for multiple matched MCS levels, selects the lowest MCS level as the final MCS level to be sent .
  • the terminal randomly selects an uplink transmission resource from them, or selects an uplink transmission resource according to the time-frequency resource timing of the uplink transmission resource.
  • two points can be considered: If the network broadcasts a fixed MCS level, then only the TBS size and the size of the uplink transmission resource block need to be considered; if the network broadcasts multiple MCS level sequence numbers, the UE can first according to RSRP and SINR To select one or more matching MCS levels from the multiple MCS level sequence numbers indicated in the broadcast signaling, and then find the uplink transmission resources of the MSGA corresponding to the MCS level, and determine the data carried by each resource accordingly Bit, and then compare with its own actual transmission bit, and finally find a suitable uplink transmission resource.
  • the UE can randomly select or sort the time-frequency resources to find the first resource; if necessary, add padding bits, and then according to the MCS level corresponding to the resource block Perform modulation and coding, and send data on the selected resource block.
  • the second network configuration method :
  • the terminal determines the uplink transmission resources configured on the network side, as well as TBS or MCS, including:
  • the terminal selects one of the uplink transmission resources according to the size of the uplink data block to be transmitted and determines the corresponding TBS or MCS.
  • the UE knows the specific information and quantity of TBS/MCS currently configured in the network, as well as the location and quantity of the MSGA uplink transmission resources corresponding to each TBS/MCS index.
  • the terminal determines the corresponding TBS
  • the network broadcasts a fixed MCS level, then only the size of the TBS needs to be considered.
  • the implementation should also consider whether it is the MSGA resource that can be used by the current RSRP and SINR; if the UE cannot use the MSGA For uplink transmission resources, you also need to select the normal access method, and then send it after accessing the network;
  • the UE can first select one or more matching MCS levels from the multiple MCS level serial numbers indicated in the broadcast signaling according to RSRP and SINR, and then find the corresponding MCS Level of MSGA uplink transmission resources, and based on this to determine the data bits carried by each resource, and then compare with its own actual transmission bits, and finally find a suitable uplink transmission resource; if there are multiple matching MCS levels, in multiple Among the matched MCS levels, the lowest MCS level is selected as the final MCS level to be sent, and then the corresponding uplink transmission resource is determined as the final suitable uplink transmission resource.
  • the network side may indicate the mapping relationship between the UE's TBS index or MCS index and uplink transmission resources in one of the following ways or a combination:
  • the uplink transmission resource number is preset, the mapping relationship between the TBS index or the MCS index and the uplink transmission resource number is preset, and the mapping relationship is indicated by the uplink transmission resource number; or,
  • the TBS index or MCS index indicated by the preset broadcast can be sent on any uplink transmission resource, and the TBS index or MCS index is indicated by broadcasting; or,
  • the terminal determines the configuration of the network side in one of the following ways or a combination:
  • the terminal determines the uplink transmission resource configured on the network side, and the TBS or MCS according to the pre-arranged TBS index sequence number or the mapping relationship between the MCS index sequence number and the uplink transmission resource with the network side; or,
  • the terminal determines to send MSGA on any uplink transmission resource in the MSGA configured on the network side;
  • the terminal determines the uplink transmission resource configured on the network side and the TBS or MCS according to the mapping relationship between the uplink transmission resource broadcasted by the network side and the TBS index sequence number or the MCS index sequence number.
  • This method is a method to implicitly indicate the mapping relationship between TBS index/MCS index and MSGA uplink transmission resources, and the mapping relationship needs to be predetermined by the UE and the network side.
  • This method is a method to implicitly indicate the mapping relationship between TBS index or MCS index and MSGA uplink transmission resources, and the mapping relationship needs to be predetermined by the UE and the network side.
  • TBS indexes or MCS indexes broadcast on the network side can be sent on any uplink transmission resource in MSGA.
  • the network does not need to allocate dedicated MSGA uplink transmission resources for each TBS index or MCS index.
  • the MSGA uplink transmission resources corresponding to each TBS index or MCS index are directly carried in the broadcast signaling.
  • PRACH resources are allocated in groups, and PUSCH resources are allocated in groups, where:
  • One set of PRACH resources corresponds to at least two sets of PUSCH resources; or,
  • a group of PRACH resources corresponds to a group of PUSCH resources.
  • each PRACH resource in a set of PRACH resources corresponds to one PUSCH resource in each set of PUSCH resources;
  • a group of PRACH resources is divided into several groups of PRACH resources, and each group of PRACH resources corresponds to a group of PUSCH resources.
  • One Preamble group resource can correspond to multiple PUSCH groups; or,
  • One Preamble group resource can correspond to one PUSCH group.
  • one preamble resource (preamble code and RACH transmission resource) in one preamble group can correspond to each PUSCH group in multiple PUSCH groups.
  • preamble group resource corresponds to one PUSCH group
  • the base station sends broadcast signaling.
  • the signaling includes: PUSCH transmission resources (including: PUSCH transmission time slot number (nrofslotsMsgAPUSCH), the number of PUSCH transmission resources contained in each time slot (nrofMsgAPOperSlot)), TBS index (MSGA-TBSIndex), Code modulation level (MSGA-MCS), time domain resource allocation (start symbol and PUSCH length indicator SLIV (start and length indicator value), two PUSCH transmission resources in a time slot Time domain interval (guard Period MsgA PUSCH), frequency domain interval of two PUSCH transmission resources in a time slot (guard band MsgA PUSCH), initial frequency domain allocation indication for PUSCH transmission resources (including: frequency domain start position Indicate (frequencystartMsgAPUSCH), the number of PRBs (nrofPRBsperMsgAPOperTBS), and the pilot signal configuration (msgA-DMRS-Configuration) of the PUSCH transmission resource.
  • PUSCH transmission resources including
  • the broadcast information format on the network side can be as shown in Table 1.
  • Table 1 Physical layer information included in the broadcast signaling of Embodiment 1
  • N preamble ceil(T preamble /T PUSCH ) (1)
  • T PUSCH T PO x N DMRSperPO
  • T PO nrofslotsMsgAPUSCH x nrofMsgAPOperSlot
  • N DMRSperPO is obtained from msgA-DMRS-Configuration.
  • N POperTBS ceil (T PO /T TBS or T MCS )
  • N POperTBS is the number of PUSCH transmission resources corresponding to each TBS
  • T TBS is the total number of TBS indexes
  • T MCS is the total number of MCS indexes; in order to reduce frequency domain fading channels
  • the formula for matching TBS index and PUSCH is as follows: The jth TBS index corresponding to the kth PUSCH transmission resource:
  • N preamble the number of Preamble indexes or the number of PRACH resources corresponding to each PUSCH resource in a cycle
  • T preamble in a period, the total number of Preamble indexes or the total number of PRACH resources;
  • T PUSCH the total number of PUSCH resources in a period
  • T PO In a period, the total number of PUSCH transmission opportunities
  • nrofslotsMsgAPUSCH In a cycle, all the total number of time slots that can carry PUSCH transmission;
  • nrofMsgAPOperSlot the number of PUSCH transmission slots in each slot
  • N DMRSperPO The number of DMRS (demodulated reference signal, demodulated reference signal) carried in each PUSCH transmission slot.
  • the implementation can be as follows: the total PUSCH transmission resources are 15, the total number of TBS indexes is 5, and the resource matching is shown in Table 2 below.
  • the horizontal axis of the table represents the time domain, and the vertical axis of the table represents the frequency domain.
  • Table 2 TBSindex and PUSCH transmission resource mapping mode
  • TBS resources are allocated non-uniformly
  • Table 3 the horizontal axis of the table represents the time domain, and the vertical axis of the table represents the frequency domain.
  • Table 3 TBSindex and PUSCH transmission resource mapping mode
  • Fig. 6 is a schematic diagram of PRACH and PUSCH time-frequency resource allocation and corresponding relationship in embodiment 1
  • Fig. 7 is a schematic diagram of one-to-one mapping of two groups of PRACH group and PUSCH group resources
  • Fig. 8 is a pair of multiple groups of PRACH group and PUSCH group resources
  • Figure 9 is a schematic diagram of one-to-one mapping of multiple groups of PRACH group and PUSCH group resources.
  • Figure 10 is a schematic diagram of one-to-many mapping between multiple groups of PRACH group and PUSCH group resources.
  • Figure 11 is a schematic diagram of one-to-many mapping between PRACH group and PUSCH group resources. Schematic diagram of mapping method 1.
  • Figure 12 is a schematic diagram of one-to-many mapping method 2 of PRACH group and PUSCH group resources. As shown in the figure, the mapping method between PRACH resources and PUSCH resources in MSGA resources can be as follows:
  • MSGA resources include two groups of resources, PRACH group and PUSCH group.
  • the mapping relationship between these two groups of resources can be: one PRACH group resource corresponds to multiple PUSCH groups; or one PRACH group resource corresponds to one PUSCH group.
  • One-to-one mapping between PRACH group and PUSCH group resources one preamble resource (preamble code and RACH transmission resource) in one PRACH group can correspond to one PUSCH in each PUSCH group in multiple PUSCH groups resource.
  • the PRACH group and PUSCH group resources in the figure are one-to-one mapping.
  • the network can configure multiple groups of PRACH group and PUSCH group resources, and each group of PRACH group and each group of PUSCH group have a one-to-one correspondence.
  • the MCS of each PUSCH group is configurable.
  • each PRACH resource and PUSCH resource can be configured in a one-to-one correspondence, or multiple PRACH resources in a PRACH group can correspond to one PUSCH resource in a PUSCH group .
  • the network can also configure multiple groups of PRACH group and PUSCH group resources. Some PUSCH group resources have corresponding PRACH groups, and some PUSCH group resources do not have corresponding PRACH groups, because these PRACH group resources are used by fixed terminals. , These resources have effective TA (Timing Advanced) requirements.
  • the network can also configure multiple groups of PRACH group and PUSCH group resources, and each PRACH group resource corresponds to two or more groups of PUSCH group.
  • the MCS of each PUSCH group is configurable or fixed.
  • One PRACH group resource can correspond to one resource group of one PUSCH group, which means that if there are several PRACH group resource groups, the network side will configure the corresponding number of PUSCH group resources.
  • one PUSCH group includes multiple PUSCH groups. Resources, a PRACHgroup contains multiple PRACH group resource groups;
  • one PRACH group can correspond to two or more PUSCH groups
  • one PRACH resource group of one PRACH group can correspond to one PUSCH resource in two or more PUSCH groups. Determine whether there is data transmission on two or more PUSCH resources.
  • a PRACH group can correspond to two or more PUSCH groups, a part of the resources of the PRACH group corresponds to the PUSCH resources in the first PUSCH group, and the other part of the resources of the PRACH group corresponds to the PUSCH resources in the second PUSCH group.
  • each PRACH resource can correspond to PUSCH resources of different PUSCH groups.
  • the base station (gNB) finds the PUSCH resource sent by the terminal by blindly solving all possible PUSCH sending resources. If two UEs send the same PRACH+two different PUSCHs, and the network successfully demodulates the two PUSCH data, then the base station (gNB) sends success RAR (RAR success), if it does not carry the timing advance transmission information TA, the two UEs know the base station (gNB) The uplink data carried by the PUSCH is successfully received but the PRACH conflicts, so the two UEs will only send the PRACH again to obtain the TA. If the network sends a success RAR with TA, both UEs use this TA for data transmission. If the data transmission fails, the 2-step RACH needs to be restarted.
  • each PRACH resource only corresponds to a unique PUSCH resource.
  • the frequency domain resources are the same, and the time domain resources are different to match different TBSs.
  • the base station sends broadcast signaling.
  • the new IE (Information Element) in the signaling includes: TBS index (MSGA-TBS Index), time domain resource allocation (start code element and PUSCH length indicator SLIVperTBS (start of each TBS) The start and length indicator value, start and length indicator value per TBS) SLIV for each TBS block), the number of PRBs (nrofPRBsperMsgAPO), and the network-side broadcast information format is shown in Table 4.
  • Table 4 Physical layer information included in broadcast signaling in Embodiment 2
  • this part of the implementation can be the same as the implementation in Embodiment 1.
  • the MSGA physical layer resources allocated by the network side in a period include total PRACH resources (T PRACH ) and total PUSCH resources (T PUSCH ).
  • T PRACH total PRACH resources
  • T PUSCH total PUSCH resources
  • the correspondence between PRACH and PUSCH transmission resources can be as shown in formula 3.
  • a PUSCH at least It can correspond to one PRACH resource.
  • N preamble ceil(T preamble /T PUSCH ) (3)
  • T PUSCH T PO x N DMRSperPO
  • T PO nrofslotsMsgAPUSCH x nrofMsgAPOperSlot
  • N DMRSperPO is obtained from msgA-DMRS-Configuration.
  • N POperTBS ceil(T PO /T TBS )
  • N POperTBS is the number of PUSCH transmission resources corresponding to each TBS
  • T TBS is the total number of TBS indexes; in order to reduce the influence of frequency domain fading channels, the matching formula of TBS index and PUSCH is as follows :
  • the implementation can be as follows: the total PUSCH transmission resources are 15 and the total number of TBS indexes is 5.
  • the resource matching is shown in the following Table 5-1, Table 5-2, and Table 5-3.
  • the horizontal axis of the table represents the time domain
  • the vertical axis of the table represents the frequency domain.
  • Table 5-1 TBSindex and PUSCH transmission resource mapping mode
  • Table 5-2 shows the mapping between TBSindex and PUSCH transmission resources
  • TBS resources are allocated non-uniformly
  • the implementation can be as follows: total PUSCH transmission resources 15 (the network can be flexibly configured according to the traffic)
  • the total number of TBS indexes is 5, where the number of TBS0 is 2, the number of TBS1 is 2, and the number of TBS2 is 1.
  • Resource matching is shown in Table 6 below. In the table, the horizontal axis of the table represents the time domain, and the vertical axis of the table represents the frequency domain.
  • Table 6 TBSindex and PUSCH transmission resource mapping mode
  • FIG. 13 is a schematic diagram of PRACH and PUSCH time-frequency resource allocation and corresponding relationship in Embodiment 2. For specific implementation, reference may be made to the implementation of mapping between PRACH resources and PUSCH resources in MSGA resources in Embodiment 1.
  • different TBSs can be matched based on different time-frequency resources.
  • the base station sends broadcast signaling.
  • the signaling includes new IEs: TBS index (MSGA-TBS Index), time domain resource allocation (start symbol and PUSCH length indicator symbol length indicator value SLIVperTBS (start symbol and length MsgA PO)
  • TBS index MSGA-TBS Index
  • time domain resource allocation start symbol and PUSCH length indicator symbol length indicator value
  • SLIVperTBS start symbol and length MsgA PO
  • SLIVperTBS start symbol and length MsgA PO
  • Table 7 The broadcast signaling in Embodiment 3 contains new physical layer information
  • this part of the implementation can be the same as the implementation in Embodiment 1.
  • the MSGA physical layer resources allocated by the network side in a cycle include total PRACH resources (T PRACH ) and total PUSCH resources (T PUSCH ).
  • T PRACH total PRACH resources
  • T PUSCH total PUSCH resources
  • the correspondence between PRACH and PUSCH transmission resources can be as shown in formula 5.
  • a PUSCH It can correspond to at least one PRACH resource.
  • N preamble ceil(T preamble /T PUSCH ) (5)
  • T PUSCH T PO x N DMRSperPO
  • T PO nrofslotsMsgAPUSCH x nrofMsgAPOperSlot
  • N DMRSperPO is obtained from msgA-DMRS-Configuration.
  • N POperTBS ceil(T PO /T TBS )
  • N POperTBS is the number of PUSCH transmission resources corresponding to each TBS
  • T TBS is the total number of TBS indexes; in order to reduce the influence of frequency domain fading channels, the matching formula of TBS index and PUSCH is as follows :
  • the implementation can be as follows: the total PUSCH transmission resources are 15, the total number of TBS indexes is 5, and the resource matching is shown in Table 8 below.
  • the horizontal axis of the table represents the time domain, and the vertical axis of the table represents the frequency domain.
  • Table 8 TBSindex and PUSCH transmission resource mapping mode
  • the implementation can be as follows: total PUSCH transmission resources are 15 and the total number of TBS indexes is 5, where the number of TBS0 is 2, the number of TBS1 is 2, and the number of TBS2 is 1.
  • the resource matching is shown in Table 9 below .
  • the horizontal axis of the table represents the time domain
  • the vertical axis of the table represents the frequency domain.
  • Table 9 TBSindex and PUSCH transmission resource mapping mode
  • FIG. 14 is a schematic diagram of the allocation of PRACH and PUSCH time-frequency resources and the corresponding relationship between MsgA in RACH in Embodiment 3. For specific implementation, refer to the implementation of mapping between PRACH resources and PUSCH resources in MSGA resources in Embodiment 1 .
  • the uplink data transmission PUSCH in the MSGA of the 2-step RACH supports multiple transport blocks (TBS), allocates fixed time-frequency resources, and allocates a corresponding modulation and coding level (MCS level) for each TBS.
  • TBS transport blocks
  • MCS level modulation and coding level
  • the network side can allocate dedicated MSGA uplink transmission resources for each MCS.
  • the base station sends broadcast signaling.
  • the new IEs in the signaling include: MSGA-MCSindex i (multiple indexes can be configured in the network), time domain resource allocation (start symbol and PUSCH length indicator start and length indicator) value SLIVperMCSindex (start and lengthperMCSindex)), the number of PRBs (nrofPRBsperMsgAPOperMCS).
  • the broadcast information format on the network side is shown in Table 10.
  • the UE and the network side agree in advance on the PUSCH resource and MCS matching method, and the PUSCH resource and PRACH resource matching method.
  • the UE will then broadcast information based on the network or specific resource allocation information.
  • the network side only broadcasts all the MCS levels that need to be supported.
  • the network side and the UE have agreed in advance the mapping relationship between the MCS level and the PUSCH.
  • the mapping relationship is shown in Table 12 and Table 13. Show.
  • Table 10 Physical layer information included in the broadcast signaling of network configuration 1 in Example 4.
  • the network side does not need to allocate dedicated MSGA uplink transmission resources for each MCS, and each MSGA uplink transmission resource can support all MCS coding levels included in broadcast signaling.
  • the UE can select the corresponding MCS coding level according to its own channel conditions and data volume and send it on the selected MSGA uplink transmission resources.
  • the network performs blind detection of the transmitted data according to all the broadcasted MCS coding and modulation levels.
  • Each PUSCH resource supports all MCS levels. Adding MSG-A SINR threshold (MSGA signal-to-interference plus noise ratio threshold) is used to indicate that this MCS index can be used when the terminal's SINR ⁇ this threshold. As shown in Table 11.
  • MSG-A SINR threshold MSGA signal-to-interference plus noise ratio threshold
  • Table 11 Physical layer information included in the broadcast signaling of network configuration 2 in embodiment 4
  • the MSGA physical layer resources allocated by the network side in a period include total PRACH resources (T PRACH ) and total PUSCH resources (T PUSCH ).
  • T PRACH total PRACH resources
  • T PUSCH total PUSCH resources
  • the correspondence relationship between PRACH and PUSCH transmission resources can be as shown in formula 7.
  • a PUSCH at least It can correspond to one PRACH resource.
  • N preamble ceil(T preamble /T PUSCH ) (7)
  • T PUSCH T PO x N DMRSperPO
  • T PO nrofslotsMsgAPUSCH x nrofMsgAPOperSlot
  • N DMRSperPO is obtained from msgA-DMRS-Configuration.
  • N POperTBS ceil(T PO /T MCSindex )
  • N POperMCSindex is the number of PUSCH transmission resources contained in each MCSindex
  • T MCSindex is the total number of MCS indexes; in order to reduce the influence of frequency domain fading channels, the matching formula for MCS index and PUSCH is as follows : The jth TBS index corresponding to the kth PUSCH transmission resource
  • the implementation can be as follows: the total PUSCH transmission resources are 15 and the total MCS index is 5, and the resource matching is shown in Table 12 below.
  • the horizontal axis of the table represents the time domain, and the vertical axis of the table represents the frequency domain.
  • Table 12 MCSindex and PUSCH transmission resource mapping mode
  • the implementation can be as follows: total PUSCH transmission resources are 15 and the total number of MCS indexes is 5, where the number of MCSindex0 is 2, the number of MCSindex1 is 2, and the number of MCSindex2 is 1.
  • the resource matching is shown in Table 13 below .
  • the horizontal axis of the table represents the time domain
  • the vertical axis of the table represents the frequency domain.
  • Table 13 MCSindex and PUSCH transmission resource mapping mode
  • FIG. 15 is a schematic diagram of the PRACH and PUSCH time-frequency resource allocation and the corresponding relationship of the MsgA in the 2-step RACH in Embodiment 4.
  • the network side directly broadcasts the transmission coding block TBS or MCS index sequence number and the corresponding MSGA uplink transmission resource (preamble resource + PUSCH uplink transmission resource), and the network side and the UE do not need to agree on the TBS index sequence number or MCS index sequence number and MSGA uplink transmission The mapping relationship of resources.
  • the UE finds the corresponding uplink transmission resource according to the network configuration to perform uplink data transmission.
  • Method 1 The network broadcasts a set of PRACHgroup resources and a set of PUSCHgroup resources. For PUSCHgroup resources, it includes multiple MCSindexes and the network allocates corresponding PUSCH time-frequency resources for each MCSindex. Each MCSindex corresponds to a corresponding PUSCH time-frequency resource. Data block length TBS.
  • the base station sends broadcast signaling.
  • the signaling includes: PUSCH transmission resources (the number of PUSCH transmission time slots (nrofslotsMsgAPUSCH), the number of PUSCH transmission resources contained in each time slot (nrofMsgAPOperSlot), TBS index (MSGA-TBSIndex), coding and modulation level (MSGA-MCS), time domain resource allocation (start symbol and PUSCH length indicator symbol length indicator value SLIV (start and length indicator value)), time domain interval between two PUSCH transmission resources in a time slot (guard Period) MsgA PUSCH), the frequency domain interval of two PUSCH transmission resources in a time slot (guardband MsgA PUSCH), the initial frequency domain allocation indication for PUSCH transmission resources (frequency start MsgAPUSCH) and the number of PRBs (nrofPRBsperMsgAPO), the pilot signal configuration of PUSCH transmission resources (msgA-DMRS-Configuration), the total number of MCS indexes supported by MS
  • Table 14 Physical layer information included in broadcast signaling in mode 1
  • 16 is a schematic diagram of the PRACH and PUSCH time-frequency resource allocation and the corresponding relationship in the method 1 of the method (3) in the embodiment 4.
  • Method 2 The network side allocates multiple groups of PRACH group resources and PUSCH group resources to MSGA, they are one-to-one correspondence, and each PUSCH group resource corresponds to one MCS and the corresponding PUSCH time-frequency resource, and each PUSCH group resource corresponds to one The length of the data transfer block TBS.
  • the base station sends broadcast signaling.
  • the signaling includes: PUSCH transmission resources (the number of PUSCH transmission time slots (nrofslotsMsgAPUSCH), the number of PUSCH transmission resources contained in each time slot (nrofMsgAPOperSlot), TBS index (MSGA-TBSIndex), coding and modulation level (MSGA-MCS), time domain resource allocation (start symbol and PUSCH length indicator symbol length indicator value SLIV (start and length indicator value MsgA PO)), time domain interval between two PUSCH transmission resources in a time slot ( guard Period MsgA PUSCH), the frequency domain interval of two PUSCH transmission resources in one time slot (guard band MsgA PUSCH), the initial frequency domain allocation indication for PUSCH transmission resources (frequency start MsgAPUSCH) and PRB Number (nrofPRBsperMsgAPO), the pilot signal configuration of PUSCH transmission resources (msgA-DMRS-Configuration), the total number of MCS indexes supported by MS
  • Table 15 Physical layer information included in the broadcast signaling in the method 2 in the method (3)
  • Figure 17 is a schematic diagram of PRACH and PUSCH time-frequency resource allocation and corresponding relationship in mode (3) mode 2 in embodiment 4. As shown in the figure, the mapping between PRACH resources and PUSCH resources in MSGA resources can be implemented as follows :
  • MSGA resources include PRACH group and PUSCH group resources.
  • the mapping relationship between these two groups of resources can be: one PRACH group resource can correspond to multiple PUSCH groups; or, one PRACH group resource can correspond to one PUSCH group.
  • One-to-one mapping between PRACH group and PUSCH group resources one preamble resource (preamble code and RACH transmission resource) in one PRACH group can correspond to one PUSCH in each PUSCH group in multiple PUSCH groups resource.
  • the PRACH group and PUSCH group resources in the figure are one-to-one mapping.
  • the network can configure multiple groups of PRACH group and PUSCH group resources, and each group of PRACH group and each group of PUSCH group have a one-to-one correspondence.
  • the MCS of each PUSCH group is configurable.
  • each PRACH resource and PUSCH resource can be configured in a one-to-one correspondence, or multiple PRACH resources in a PRACH group can correspond to one PUSCH resource in a PUSCH group .
  • the web page can be configured with multiple groups of PRACH group and PUSCH group resources. Some PUSCH group resources have corresponding PRACH groups, and some PUSCH group resources do not have corresponding PRACH groups, because PRACH group resources are used by fixed terminals.
  • a PRACH group resource is divided into several PRACH resource groups according to the total number of PUSCH groups, and each resource group corresponds to a PUSCH group resource.
  • Figure 11 and Figure 12 show a schematic diagram of the mapping relationship between one set of PRACH groups and two/multiple groups.
  • PRACH group corresponds to PUSCH group
  • PRACH group resource group corresponds to PUSCH resource
  • group corresponds to group
  • resource corresponds to resource.
  • a PRACH group can correspond to two or more PUSCH groups
  • a PRACH resource group of a PRACH group can correspond to one PUSCH resource in two or more PUSCH groups
  • the terminal can be in one or more PUSCH groups.
  • the base station can determine whether there is data transmission on two or more PUSCH resources in a blind solution.
  • a PRACH group can correspond to two or more PUSCH groups, a part of the resources of the PRACH group corresponds to the PUSCH resources in the first PUSCH group, and the other part of the resources of the PRACH group corresponds to the PUSCH resources in the second PUSCH group.
  • Figure 11 shows that each PRACH resource can correspond to PUSCH resources of different PUSCH groups, and the network side finds the PUSCH resources sent by the terminal by blindly solving all possible PUSCH sending resources. If two UEs send the same PRACH+two different PUSCHs, and the network successfully demodulates the two PUSCH data, the network sends success RAR.
  • timing advance transmission information TA is not carried, the two UEs know that the network has successfully received the PUSCH carried Uplink data but PRACH conflicts, so the two UEs will only send PRACH again to obtain TA. If the network sends a success RAR with TA, both UEs use this TA for data transmission. If the data transmission fails, the 2-step RACH needs to be restarted.
  • each PRACH resource only corresponds to a unique PUSCH resource.
  • This method is a method of implicitly indicating the mapping relationship between TBS index/MCS index and MSGA uplink transmission resources, and the mapping relationship needs to be predetermined by the UE and the network side.
  • both the network side and the UE need to sort the uplink transmission resources in MSGA (including preamble resource allocation and PUSCH resource allocation). For example, if the total resources are N, each resource number (0,1,..., N-1), to establish a mapping relationship between each resource number and the TBS/MCS sequence number.
  • MSGA including preamble resource allocation and PUSCH resource allocation
  • This method is a method of implicitly indicating the mapping relationship between TBS index/MCS index and MSGA uplink transmission resources, and the mapping relationship needs to be predetermined by the UE and the network side.
  • Multiple MCS indexes broadcast on the network side can be sent on any uplink transmission resource in MSGA.
  • the network does not need to allocate dedicated uplink transmission resources in MSGA for each MCS.
  • the network side needs to blindly decode the coding modulation method on the uplink transmission resources.
  • the MSGA uplink transmission resources corresponding to each TBS index/MCS index are directly carried in the broadcast signaling.
  • the following describes the implementation of the mapping between the Preamble resource and the PUSCH resource in the MSGA resource.
  • MSGA resources include PRACH group and PUSCH group resources.
  • the mapping relationship between these two groups of resources can be: PRACH group corresponds to PUSCH group, and PRACH resource group corresponds to PUSCH resource.
  • One preamble resource (preamble code and RACH transmission resource) in one PRACH group can correspond to one PUSCH resource in each PUSCH group in multiple PUSCH groups.
  • a PRACH group resource is divided into several PRACH resource groups according to the total number of PUSCH groups, and each resource group corresponds to a PUSCH group resource.
  • One PRACH group resource can correspond to one PUSCH group, that is, if there are several PRACH group resources, the network will configure a corresponding number of PUSCH group resources.
  • the MSGA physical layer resources allocated by the network side in a cycle include total PRACH resources (T PRACH ) and total PUSCH resources (T PUSCH ).
  • T PRACH total PRACH resources
  • T PUSCH total PUSCH resources
  • the correspondence relationship between PRACH and PUSCH transmission resources can be as shown in formula 9.
  • a PUSCH at least It can correspond to one PRACH resource.
  • N preamble ceil(T preamble / ⁇ T PUSCH ) (9)
  • T PUSCH T PO * N DMRSperPO
  • T PO nrofslotsMsgAPUSCH * nrofMsgAPOperSlot
  • N DMRSperPO is obtained from msgA-DMRS-Configuration.
  • is the PUSCH resource aggregation level in the TPO within a period and can be ⁇ 1, for example, it can take the values 1, 1/2, 1/4, 1/6, 1/8, 1/16, It is easy to understand that when the value is 1, formula (9) is formula (7). If ⁇ 1, it means that multiple PUSCH transmission resources are bundled into a PUSCH transmission resource transmission group, and this group of resources corresponds to one of the PRACHgroups Or multiple PRACH resource groups.
  • a PRACH group corresponds to a PUSCH group.
  • 2 PUSCH transmission opportunities form a PUSCH transmission opportunity resource group, and each PUSCH group corresponds to one or more PRACH resource groups ,
  • Each PUSCH sending opportunity resource group corresponds to N DMRSperPOsubgroup DMRS index.
  • a PRACH group corresponds to a PUSCH group.
  • 4 PUSCH transmission opportunities form a PUSCH transmission opportunity resource group, and each PUSCH group corresponds to 2/more PRACH resources Group, each PUSCH sending opportunity resource group corresponds to N DMRSperPOsubgroup DMRS index.
  • a PRACH group corresponds to two or more PUSCH groups.
  • 2 PUSCH transmission opportunities form a PUSCH transmission opportunity resource group, and each PUSCH group corresponds to one or Multiple PRACH resource groups.
  • Each PUSCH transmission opportunity resource group corresponds to N DMRSperPOsubgroup DMRS index.
  • One PRACH resource group can correspond to each of the two PUSCH groups. The resource can know whether the UE will send data in both PUSCH groups.
  • the main steps for sending MSGA on the terminal side are as follows:
  • the UE obtains multiple sets of MSGA configurations on the network side;
  • the UE selects a set of MSGA configurations based on specific rules, for example, selects based on RSRP, SINR, and the size of the sent data;
  • the UE sends MSGA according to the selected configuration
  • the terminal can divide its data into blocks, transmit part of the PUSCH in MsgA, and transmit it in MAC It indicates that there is follow-up data.
  • the network side allocates UL grant (uplink scheduling information) in the success RAR of the MSGB, and the UE can return to the disconnected state after the data is transmitted in the connected state.
  • the UE After the UE receives the specific information and quantity of TBS/MCS contained in the broadcast signaling, as well as the preamble resource allocation and PUSCH resource allocation in MSGA, it will know the specific location and total number of MSGA uplink transmission resources currently configured on the network, and The specific information and quantity of TBS/MCS currently indicated by the network.
  • the UE will establish a mapping relationship between each resource number and TBS/MCS sequence number pre-agreed with the network, and calculate how many information bits each uplink transmission resource of MSGA can carry, and then the UE determines the uplink transmission resource (calculates that it wants to transmit according to its own business needs). Comparing the number of bits with the number of bits carried by each resource, find the transmission resource that is ⁇ the number of bits sent by itself and is closest to the number of bits that need to be sent by itself).
  • FIG. 18 is a schematic diagram of the selection process of PRACH and PUSCH resources based on MCS level on the terminal side of Embodiment 5, as shown in FIG. 18. From the perspective of the terminal, it mainly includes the following steps:
  • Step 1801 The unconnected UE has data to send.
  • step 1802 the UE judges whether the RSRP is greater than the RSRP threshold, if yes, go to step 1804, otherwise go to step 1803.
  • the UE If the UE is in a non-connected state, such as Idle (idle state) or Inactive (inactive state), the UE sends uplink data and compares its RSRP and RSRP threshold. If it is greater than the threshold, it uses 2-stepRACH, if it is less than the threshold Just use 4-step RACH.
  • a non-connected state such as Idle (idle state) or Inactive (inactive state)
  • the UE sends uplink data and compares its RSRP and RSRP threshold. If it is greater than the threshold, it uses 2-stepRACH, if it is less than the threshold Just use 4-step RACH.
  • Step 1803 Enter the 4-step RACH process.
  • Step 1804 Enter the 2-step RACH process.
  • the UE selects the 2-stepRACH process, it will read the PRACH and PUSCH configuration information in the MSGA of the 2-stepRACH broadcast by the network.
  • Step 1805 Determine the PUSCH resource size and location according to the network broadcast signaling/according to the network broadcast signaling+pre-appointed PRACH and PUSCH resource allocation, as well as the MCS supported by each PUSCH and the corresponding PRACH resource.
  • Step 1806A If each PUSCH corresponds to one MCS and different MCS corresponds to different PUSCHs, and the size of each PUSCH is different, the UE selects the matching PUSCH resource and MCS level according to the size of the uplink data and the SINR.
  • Step 1806B If each PUSCH corresponds to multiple MCSs, the UE selects a matching MCS level according to the size of uplink data and SINR, and selects PUSCH resources according to channel conditions.
  • Step 1806C If each PUSCH corresponds to one MCS and different MCS corresponds to different PUSCHs and the PUSCH resource size is the same, the UE selects the matching PUSCH resource and MCS level according to the size of the uplink data and the SINR.
  • Step 1806D All PUSCH resources correspond to a fixed MCS, each PUSCH corresponds to one MCS and each PUSCH has a different size, and the UE selects a matching PUSCH resource according to the size of the uplink data.
  • Step 1807 The UE obtains the PRACH resource corresponding to the PUSCH. If there are multiple PRACH resources, the UE can randomly select it.
  • Step 1808 It is judged whether a resource and MCS are selected, if it does not go to step 1809 to perform 4-step RACH, if yes, go to step 1810.
  • Step 1809 Enter the 4-step RACH process.
  • the UE will know the specific information and quantity of TBS/MCS currently configured in the network, as well as the location and quantity of MSGA uplink transmission resources corresponding to each TBS/MCS index.
  • the UE can calculate how many information bits each uplink transmission resource in MSGA can carry, and then the UE determines the uplink transmission resource (compare the number of bits to be transmitted according to its own business needs and compare the number of bits carried by each resource) , Find the transmission resource corresponding to ⁇ the number of bits sent by itself and closest to the number of bits that need to be sent by itself).
  • the network side allocates multiple groups of PRACH group resources and PUSCH group resources to MSGA, which are one-to-one correspondence.
  • each PUSCH group resource corresponds to an MCS and corresponding PUSCH time-frequency resource
  • each PUSCH group resource corresponds to a data transmission block. TBS length.
  • FIG. 19 is a schematic diagram of the process of selecting PRACH and PUSCH resources based on MCS level on the terminal side of Embodiment 7. As shown in FIG. 19, from the perspective of the terminal, it mainly includes the following steps:
  • Step 1902 the UE judges whether the RSRP is greater than the RSRP threshold, if yes, go to step 1904; otherwise, go to step 1903.
  • the UE If the UE is in a non-connected state, such as Idle (idle state) or Inactive (inactive state), the UE sends uplink data and compares its RSRP and RSRP threshold. If it is greater than the threshold, it uses 2-stepRACH, if it is less than the threshold Just use 4-step RACH.
  • a non-connected state such as Idle (idle state) or Inactive (inactive state)
  • the UE sends uplink data and compares its RSRP and RSRP threshold. If it is greater than the threshold, it uses 2-stepRACH, if it is less than the threshold Just use 4-step RACH.
  • Step 1903 Enter the 4-step RACH process.
  • Step 1904 Enter the 2-step RACH process.
  • the UE selects the 2-stepRACH process, it will read the PRACH and PUSCH configuration information in the MSGA of the 2-stepRACH broadcast by the network.
  • Step 1905 Read the PRACH and PUSCH configuration information in the MSGA of the 2-step RACH of the network broadcast according to the network broadcast signaling.
  • Step 1906 The UE selects PRACH resources and corresponding PUSCH resources according to its own data size.
  • Step 1907 The UE determines whether the SINR is greater than the SINR threshold corresponding to the MCS. If it is less than the SINR threshold corresponding to the MCS, proceed to step 1908 to perform 4-step RACH, and if yes, proceed to step 1909.
  • the UE judges whether the SINR is greater than the SINR threshold corresponding to the MCS, and if the 4-step RACH is not performed.
  • Step 1908 Enter the 4-step RACH process.
  • Step 1909 The UE performs coding modulation and resource mapping on the data and PRACH, and sends them to the network on the corresponding time-frequency resources.
  • the network side can configure multiple groups of PRACH group and PUSCH group resources. Some PUSCH group resources have corresponding PRACH groups, and some PUSCH group resources do not have corresponding PRACH groups, because these resources use effective timing advance TA for fixed terminals.
  • FIG. 20 is a schematic diagram of the process of selecting PRACH and PUSCH resources based on MCS level on the terminal side of Embodiment 8. As shown in FIG. 20, from the perspective of the terminal, it mainly includes the following steps:
  • Step 2001 The unconnected UE has data to send.
  • step 2002 the UE judges whether the RSRP is greater than the RSRP threshold, if yes, go to step 2004, otherwise go to step 2003.
  • the UE If it is in the non-connected state, the UE has uplink data to send and compares its own RSRP and RSRP threshold. If it is greater than the threshold, it uses 2-step RACH, and if it is less than the threshold, it uses 4-step RACH.
  • Step 2003 enter the 4-step RACH process.
  • Step 2004 enter the 2-step RACH process.
  • Step 2005 Judge whether the UE has TA valid, if yes, go to step 2006, otherwise go to step 2011.
  • the UE selects the 2-step RACH process, it is judged whether there is TA valid (valid TA), if there is TA valid, only data is sent; if the TA is not valid, the UE needs to send PRACH+PUSCH.
  • the UE judges whether the SINR is greater than the SINR threshold corresponding to the MCS, and if the 4-step RACH is not performed. If the SINR of the UE is greater than the SINR threshold corresponding to the MCS, the UE performs coding, modulation and resource mapping on the data and sends it to the network on the corresponding time-frequency resources.
  • the UE If there is no TA valid, read the PRACH and PUSCH configuration information in the MSGA of the 2-stepRACH broadcast by the network.
  • the UE selects PRACH resources and corresponding PUSCH resources according to its own data size.
  • the UE judges whether the SINR is greater than the SINR threshold corresponding to the MCS, and if the 4-step RACH is not performed. If the SINR of the UE is greater than the SINR threshold corresponding to the MCS, the UE performs coding, modulation and resource mapping on the data and PRACH and sends them to the network on the corresponding time-frequency resources.
  • Step 2007 The UE selects the corresponding PUSCH resource according to its own data size.
  • Step 2008 The UE judges whether the SINR is greater than the SINR threshold corresponding to the MCS. If it is less than the SINR threshold corresponding to the MCS, proceed to step 2009 to perform 4-step RACH, and if yes, proceed to step 2010.
  • Step 2009 enter the 4-step RACH process.
  • Step 2010 The UE performs coding modulation and resource mapping on the data and sends it to the network on the corresponding time-frequency resources.
  • Step 2012 The UE selects PRACH resources and corresponding PUSCH resources according to its own data size.
  • step 2013, the UE determines whether the SINR is greater than the SINR threshold corresponding to the MCS, and if it is less than the SINR threshold corresponding to the MCS, proceed to step 2014 to perform 4-step RACH, and if yes, proceed to step 2015.
  • Step 2014 enter the 4-step RACH process.
  • step 2015 the UE performs coding modulation and resource mapping on the data and PRACH, and sends them to the network on the corresponding time-frequency resources.
  • some embodiments of the present disclosure also provide a base station, user equipment, a random access device on the network side, a random access device on the terminal side, and a computer-readable storage medium.
  • the principle of the problem is similar to the random access method, so the implementation of these devices can refer to the implementation of the method, and the repetition will not be repeated.
  • Figure 21 is a schematic diagram of the base station structure. As shown in the figure, the base station includes:
  • the processor 2100 is configured to read a program in the memory 2120, and execute the following process:
  • the transceiver 2110 is used to receive and send data under the control of the processor 2100.
  • configuring uplink transmission resources includes: configuring PRACH resources and PUSCH resources, and the mapping relationship between PRACH resources and PUSCH resources;
  • each uplink data block size one or more MCSs or TBSs and time-frequency resources of uplink transmission resources corresponding to each MCS or TBS are allocated.
  • mapping relationship between PRACH resources and PUSCH resources is established according to the following formula:
  • N preamble ceil(T preamble / ⁇ T PUSCH )
  • ceil is the smallest integer function that returns greater than or equal to the specified expression
  • T PUSCH T PO *N DMRSperPO
  • T PO nrofslotsMsgAPUSCH*nrofMsgAPOperSlot
  • N DMRSperPO is obtained from msgA-DMRS-Configuration
  • N POperTBS ceil(T PO /T TBS or T MCS )
  • N POperTBS is the number of PUSCH transmission resources corresponding to each TBS
  • T TBS is the total number of TBS indexes
  • T MCS is the total number of MCS indexes.
  • N preamble the number of Preamble indexes or the number of PRACH resources corresponding to each PUSCH resource in a cycle
  • T preamble in a period, the total number of Preamble indexes or the total number of PRACH resources;
  • T PUSCH the total number of PUSCH resources in a period
  • T PO In a period, the total number of PUSCH transmission opportunities
  • nrofslotsMsgAPUSCH In a cycle, all the total number of time slots that can carry PUSCH transmission;
  • nrofMsgAPOperSlot the number of PUSCH transmission slots in each slot
  • N DMRSperPO the number of DMRS carried in each PUSCH transmission slot
  • The PUSCH resource aggregation level in the TPO in a period, and the value is ⁇ 1.
  • the allocation relationship between the TBS index sequence number or the MCS index sequence number and the uplink transmission resources is:
  • jTBSindex or jMCSindex mod(kPUSCHindex, T TBS or T MCS ); or,
  • N POperTBS is the number of PUSCH transmission resources corresponding to each TBS or MCS;
  • T TBS is the total number of TBS indexes;
  • T PO is the total number of PUSCH transmission opportunities in a period;
  • T MCS is the total number of MCS indexes.
  • the network does not allocate exclusive MSGA uplink transmission resources for each TBS or MCS, and the network side Blindly decode the coding modulation mode on the uplink transmission resources; or,
  • mapping relationship between the UE TBS index or MCS index and the uplink transmission resource is indicated in one of the following ways or a combination:
  • the uplink transmission resource number is preset, the mapping relationship between the TBS index or the MCS index and the uplink transmission resource number is preset, and the mapping relationship is indicated by the uplink transmission resource number; or,
  • the TBS index or MCS index indicated by the preset broadcast can be sent on any uplink transmission resource, and the TBS index or MCS index is indicated by broadcasting; or,
  • PRACH resources are allocated in groups, and PUSCH resources are allocated in groups, where:
  • One set of PRACH resources corresponds to at least two sets of PUSCH resources; or,
  • a group of PRACH resources corresponds to a group of PUSCH resources.
  • each PRACH resource in a set of PRACH resources corresponds to one PUSCH resource in each set of PUSCH resources;
  • a group of PRACH resources is divided into several groups of PRACH resources, and each group of PRACH resources corresponds to a group of PUSCH resources.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 2100 and various circuits of the memory represented by the memory 2120 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein.
  • the bus interface provides the interface.
  • the transceiver 2110 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium.
  • the processor 2100 is responsible for managing the bus architecture and general processing, and the memory 2120 can store data used by the processor 2100 when performing operations.
  • Some embodiments of the present disclosure provide a random access device, including:
  • the network side receiving module is used to receive the MSGA sent by the terminal.
  • the uplink sending resource for sending MSGA is configured on the network side. There are at least two uplink sending resources. The size of the uplink data block sent on each uplink sending resource is different. Select one of the uplink transmission resources to send MSGA according to the size of the uplink data block to be sent;
  • the network side sending module is used to send MSGB to the terminal.
  • each part of the above-mentioned device is divided into various modules or units by function and described separately.
  • the functions of each module or unit can be implemented in the same one or more software or hardware.
  • Figure 22 is a schematic diagram of the UE structure. As shown in the figure, the user equipment includes:
  • the processor 2200 is configured to read a program in the memory 2220 and execute the following process:
  • the uplink sending resources for sending MSGA where the uplink sending resources for sending MSGA are configured on the network side, there are at least two uplink sending resources, and the size of the uplink data block sent on each uplink sending resource is different;
  • the transceiver 2210 is configured to receive and send data under the control of the processor 2200.
  • configuring the uplink transmission resources on the network side includes: configuring PRACH resources and PUSCH resources, and the mapping relationship between PRACH resources and PUSCH resources;
  • the network side allocates one or more MCSs or TBSs for each type of uplink data block size, and the time-frequency resources of the uplink transmission resources corresponding to each MCS or TBS.
  • mapping relationship between PRACH resources and PUSCH resources is determined according to the following formula:
  • N preamble ceil(T preamble / ⁇ T PUSCH )
  • ceil is the smallest integer function that returns greater than or equal to the specified expression
  • T PUSCH T PO *N DMRSperPO
  • T PO nrofslotsMsgAPUSCH*nrofMsgAPOperSlot
  • N DMRSperPO is obtained from msgA-DMRS-Configuration
  • N POperTBS ceil(T PO /T TBS or T MCS )
  • N POperTBS is the number of PUSCH transmission resources corresponding to each TBS
  • T TBS is the total number of TBS indexes
  • T MCS is the total number of MCS indexes.
  • N preamble the number of Preamble indexes or the number of PRACH resources corresponding to each PUSCH resource in a cycle
  • T preamble in a period, the total number of Preamble indexes or the total number of PRACH resources;
  • T PUSCH the total number of PUSCH resources in a period
  • T PO In a period, the total number of PUSCH transmission opportunities
  • nrofslotsMsgAPUSCH In a cycle, all the total number of time slots that can carry PUSCH transmission;
  • nrofMsgAPOperSlot the number of PUSCH transmission slots in each slot
  • N DMRSperPO the number of DMRS carried in each PUSCH transmission slot
  • The PUSCH resource aggregation level in the TPO in a period, and the value is ⁇ 1.
  • the allocation relationship between the TBS index sequence number or the MCS index sequence number and the uplink transmission resources is:
  • jTBSindex or jMCSindex mod(kPUSCHindex, T TBS or T MCS ); or,
  • N POperTBS Starting from the lowest TBS index or MCS index, assign N POperTBS to each TBS index or MCS index from low to high;
  • N POperTBS is the number of PUSCH transmission resources corresponding to each TBS or MCS;
  • T TBS is the total number of TBS indexes;
  • T PO is the total number of PUSCH transmission opportunities in a period;
  • T MCS is the total number of MCS indexes.
  • the network side configuration is determined in one of the following ways or a combination:
  • MCS index and the corresponding relationship between different TBS index numbers or MCS index numbers and uplink transmission resources, and, determine to send MSGA on any uplink transmission resource in MSGA configured on the network side;
  • the uplink transmission resource configured on the network side and the TBS or MCS are determined according to the mapping relationship between the uplink transmission resource broadcasted by the network side and the TBS index sequence number or the MCS index sequence number.
  • determining the uplink transmission resources configured on the network side, as well as TBS or MCS includes:
  • one of the uplink transmission resources is selected and the corresponding TBS or MCS is determined.
  • determining the uplink transmission resources configured on the network side, as well as TBS or MCS includes:
  • one of the uplink transmission resources is selected and the corresponding TBS or MCS is determined.
  • determine the corresponding TBS or MCS including:
  • the MCS in the broadcast signaling is multiple MCS levels
  • one or more matching MCS levels are selected according to RSRP and/or SINR, and for multiple matching MCS levels, the lowest MCS level is selected as the final MCS level to be sent.
  • one uplink transmission resource is randomly selected from them, or one uplink transmission resource is selected according to the time-frequency resource timing of the uplink transmission resource.
  • mapping relationship between the TBS index or the MCS index and the uplink transmission resource is determined according to the instructions of the network side in one of the following ways or a combination thereof:
  • the TBS index or MCS index indicated by the broadcast it is determined that the TBS index or MCS index can be sent on any uplink transmission resource, where it is preset that the TBS index or MCS index indicated by the broadcast can be sent on any uplink transmission resource; or,
  • PRACH resources are allocated in groups, and PUSCH resources are allocated in groups, where:
  • One set of PRACH resources corresponds to at least two sets of PUSCH resources; or,
  • a group of PRACH resources corresponds to a group of PUSCH resources.
  • each PRACH resource in a set of PRACH resources corresponds to one PUSCH resource in each set of PUSCH resources;
  • a group of PRACH resources is divided into several groups of PRACH resources, and each group of PRACH resources corresponds to a group of PUSCH resources.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 2200 and various circuits of the memory represented by the memory 2220 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein.
  • the bus interface provides the interface.
  • the transceiver 2210 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium.
  • the user interface 2230 may also be an interface capable of connecting externally and internally with the required equipment.
  • the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 2200 is responsible for managing the bus architecture and general processing, and the memory 2220 can store data used by the processor 2200 when performing operations.
  • Some embodiments of the present disclosure provide a random access device, including:
  • the terminal side acquisition module is used to acquire the uplink transmission resources for sending MSGA.
  • the uplink transmission resources for sending MSGA are configured on the network side. There are at least two uplink transmission resources. The size of the uplink data block sent on each uplink transmission resource is different. ;
  • the terminal-side selection module is used to select one of the uplink transmission resources according to the size of the uplink data block to be sent;
  • the terminal side sending module is used to send MSGA to the network side on the selected uplink sending resource.
  • each part of the above-mentioned device is divided into various modules or units by function and described separately.
  • the functions of each module or unit can be implemented in the same one or more software or hardware.
  • a computer-readable storage medium stores a program for executing the above-mentioned random access method.
  • the network can support multiple (including more than two) uplink data block sizes (from dozens of bits) for MSGA in the 2-step RACH process.
  • multiple uplink data block sizes from dozens of bits
  • different data blocks will be allocated to one or more MCS and corresponding time-frequency resources, and the network is also configured with the PRACH resource and PUSCH resource mapping in MSGA
  • the relationship, or the predetermined and agreed mapping relationship between the network and the terminal; and the terminal can calculate the carrying capacity of each MSGA uplink transmission resource according to the network configuration and compare it with its own actual transmission data, find a suitable MSGA uplink transmission resource and send the uplink data .
  • the network side includes:
  • the network configures multiple MSGA uplink transmission resources to support simultaneous transmission of more than two uplink data block sizes (from tens of bits to thousands of bits);
  • the uplink transmission resources include PRACH resources and PUSCH resources, and the network is configured with PRACH resources and PUSCH resources and the mapping relationship.
  • one or more MCS and corresponding time-frequency resources are allocated for multiple uplink data block sizes (more than 2 types);
  • the network receives MSGA from the terminal
  • the network sends MSGB to the terminal.
  • the UE obtains multiple sets of MSGA configurations on the network side;
  • the UE selects a set of MSG A configuration based on preset rules
  • the UE sends MSG A according to the selected configuration.
  • the network can support simultaneous transmission of multiple transmission blocks in the random access process; the terminal in the non-connected state can flexibly choose the uplink in MSGA according to the data block size and channel conditions required by its own data service. Send resources to send data.
  • This solution provides more flexibility for the allocation of random access resources on the network side, and at the same time improves the utilization efficiency of the network resources of the non-connected terminal, and supports the transmission of a variety of different data block sizes for the non-connected terminal (from dozens of Bit to thousands of bits), which meets the needs of different services of the terminal.
  • the embodiments of the present disclosure can be provided as a method, a system, or a computer program product. Therefore, the present disclosure may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program codes.
  • a computer-usable storage media including but not limited to disk storage, optical storage, etc.
  • Each module, unit, sub-unit or sub-module may be one or more integrated circuits configured to implement the above method, for example: one or more specific integrated circuits (ASIC), or one or more Microprocessor (digital signal processor, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), etc.
  • ASIC application specific integrated circuits
  • DSP digital signal processor
  • FPGA field programmable gate array
  • the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call program codes.
  • these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

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Abstract

本公开公开了一种随机接入方法、基站、用户设备、装置、介质,包括:终端侧获取发送MSGA的上行发送资源,其中,发送MSGA的上行发送资源是网络侧配置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同;终端根据发送的上行数据块大小选择其中一个上行发送资源;终端在选择的上行发送资源上向网络侧发送MSGA。网络侧接收终端发送的MSGA后发送MSGB。

Description

随机接入方法、基站、用户设备、装置、介质
相关申请的交叉引用
本申请主张在2020年3月25日在中国提交的中国专利申请号No.202010218953.0的优先权,其全部内容通过引用包含于此。
技术领域
本公开涉及无线通信技术领域,特别涉及一种随机接入方法、基站、用户设备、装置、介质。
背景技术
下面对4-step RACH(四步RACH;RACH:随机接入信道,Random Access Channel)进行说明。
LTE(长期演进,Long Term Evolution)的随机接入和NR(新空口,New Radio)的常规随机接入分为竞争随机接入和非竞争随机接入两种。其中竞争随机接入的过程如下。
图1为四步竞争随机接入过程(4-step RACH)示意图,竞争随机接入过程如图1所示,分为四步,称为4-step RACH,分别如下:
Msg1(消息1):UE(用户设备,User Equipment)选择随机接入preamble(随机接入前导码)和PRACH(物理随机接入信道,Physical Random Access Channel)资源,并利用该PRACH资源向基站发送所选的随机接入preamble。
Msg2(消息2):基站接收到preamble,发送随机接入响应。
Msg3(消息3):UE在Msg2指定的UL grant(上行调度信息)上发送上行传输,不同随机接入原因Msg3上行传输的内容不同,比如对于初始接入,Msg3传输的是RRC(无线资源控制,Radio Resource Control)连接建立请求,连接态UE在Msg3中发送的是C-RNTI MAC CE(小区无线网络临时标识媒体接入控制控制单元;C-RNTI:小区无线网络临时标识,Cell-Radio Network Temporary Identifier;MAC:媒体接入控制,Media Access Control;CE:控制单元,Control Element)。总之,Msg3发送的是UE特有标识,用于基站最终唯一确定UE。
Msg4(消息4):竞争解决消息,UE根据Msg4判断随机接入是否成功。对idle UE(空闲态UE)或inactive UE(非激活态UE),Msg4携带的包含Msg3的RRC信令内容的CCCH MAC CE(公共控制信道媒体接入控制控制单元;CCCH:公共控制信道,Common Control Channel);对于连接态UE,Msg4用UE小区内唯一标识C-RNTI的PDCCH(物理下行控制信道,Physical Downlink Control Channel)进行调度,该PDCCH即可实现竞争解决。对于idle UE或inactive UE,竞争解决成功后临时C-RNTI转化为UE在该小区的 唯一UE标识C-RNTI。
下面再对2-step RACH(两步RACH)进行说明。
在新一代无线网络NR系统中,在4-step RACH基础上引申出两步随机接入过程(2-step RACH)用于竞争随机接入,图2为两步竞争随机接入过程(2-step RACH)示意图,其过程如图2所示,其中msgA(消息A)分为PRACH上的preamble传输和PUSCH(物理上行共享信道,Physical Uplink Shared Channel)上的数据传输,相当于4-step RACH的Msg1加Msg3;msgB(消息B)随机接入响应和竞争解决,相当于4-step RACH中的Msg2加Msg4。因为msgB中包含有UE竞争解决信息,其大小必然与Msg2不同。
在图2这一随机接入过程中,基站可能会给UE发送多种随机接入响应(或数据消息),如:
随机接入成功(success响应);
回退到4-step的响应(fallback响应);
随机接入序列序号(随机接入ID响应);
数据消息。
2-step RACH的MsgA中,上行数据传输只能支持小数据的传输。
相关技术的不足在于:相关技术中的2-step RACH中不支持不同数据块传输。
发明内容
本公开提供了一种随机接入方法、基站、用户设备、装置、介质,用以解决UE向网络发起随机接入的过程中,在非连接状态下,不能根据不同用户的需求灵活地为一个或多个用户提供不同数据块传输的问题。
本公开的一些实施例中提供了一种随机接入方法,包括:
网络侧接收终端发送的MSGA,其中,发送MSGA的上行发送资源是网络侧配置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同,终端根据发送的上行数据块大小选择其中一个上行发送资源来发送MSGA;
网络侧向终端发送MSGB。
实施中,网络侧配置上行发送资源包括:配置PRACH资源和PUSCH资源,以及PRACH资源与PUSCH资源之间的映射关系;
进一步包括:
针对每种上行数据块的大小分配一个或者多个MCS或TBS,以及每个MCS或TBS对应的上行发送资源的时频资源。
实施中,按如下公式建立PRACH资源与PUSCH资源之间的映射关系:
N preamble=ceil(T preamble/αT PUSCH)
其中,ceil为返回大于或者等于指定表达式的最小整数函数,T PUSCH=T PO*N DMRSperPO,T PO=nrofslotsMsgAPUSCH*nrofMsgAPOperSlot,N DMRSperPO从 msgA-DMRS-Configuration获得,将N POperTBS=ceil(T PO/T TBS或T MCS),N POperTBS为每个TBS对应的PUSCH发送资源数目,T TBS为TBS index总数,T MCS为MCS index总数,其中,各参数含义如下:
N preamble:在一个周期内,与每个PUSCH资源对应的Preamble index数目或者PRACH资源个数;
T preamble:在一个周期内,Preamble index总数或者PRACH资源总数;
T PUSCH:在一个周期内,PUSCH资源总数;
T PO:在一个周期内,PUSCH发送的机会总数;
nrofslotsMsgAPUSCH:在一个周期内,所有可以承载PUSCH发送的总的时隙数;
nrofMsgAPOperSlot:每个slot里面的PUSCH发送时隙的个数;
N DMRSperPO:每个PUSCH发送时隙所带有的DMRS的个数;
α:在一个周期内TPO里面的PUSCH资源聚合等级,取值为α≤1。
实施中,TBS索引序号或者MCS索引序号与上行发送资源的分配关系为:
对PUSCH资源排序,在频域上PUSCH occasion由低到高排序,在时域上按照PUSCH slot index由低到高;
为多个MCS或TBS分配一个或者多个PUSCH occasion,其中,将N POperTBS=ceil(T PO/T TBS),TBS index或MCS index与PUSCH匹配公式为:第k个PUSCH发送资源对应的第j个TBS index或MCS index:
jTBSindex或jMCSindex=mod(kPUSCHindex,T TBS或T MCS);或,
由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配N POperTBS
或者,
由高层信令指定MCS index或TBS index对应的PUSCH occasion的数目,并由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配分别为N 1,N 2,N 3…N n,N 1+N 2+N 3+…+N n=T PO
其中,N POperTBS为每个TBS或MCS对应的PUSCH发送资源数目;T TBS为TBS index总数;T PO为在一个周期内,PUSCH发送的机会总数;T MCS为MCS index总数。
实施中,网络侧按如下方式之一或者其组合进行配置:
网络侧配置上行发送资源,以及不同的TBS索引序号或者MCS索引序号,其中,网络侧和UE预先约定TBS索引序号或者MCS索引序号与上行发送资源的映射关系;或,
网络侧配置多个可以在MSGA中的任意上行发送资源发送的MCS index,以及不同的TBS索引序号或者MCS索引序号,其中,网络不为每个TBS或MCS分配专属的MSGA中的上行发送资源,网络侧在上行发送资源上盲解编码调制方式;或,
网络侧配置上行发送资源,以及上行发送资源与TBS索引序号或者MCS 索引序号的映射关系,其中,网络侧通过广播通知UE所述上行发送资源与TBS索引序号或者MCS索引序号的映射关系。
实施中,网络侧按如下方式之一或者其组合指示UE TBS索引或者MCS索引与上行发送资源的映射关系:
将上行发送资源编号,预设TBS索引或者MCS索引与上行发送资源编号的映射关系,通过上行发送资源编号指示所述映射关系;或,
预设广播指示的TBS索引或者MCS索引能在任一上行发送资源上发送,通过广播指示TBS索引或者MCS索引;或,
通过广播指示TBS索引或者MCS索引以及对应的上行发送资源。
实施中,在所述PRACH资源与PUSCH资源之间的映射关系中,PRACH资源按组分配,PUSCH资源按组分配,其中:
一组PRACH资源对应至少两组PUSCH资源;或,
一组PRACH资源对应一组PUSCH资源。
实施中,在一组PRACH资源对应至少两组PUSCH资源时,一组PRACH资源中的每个PRACH资源对应每组PUSCH资源中的一个PUSCH资源;或者,
一组PRACH资源分为若干小组的PRACH资源,每小组PRACH资源对应一组PUSCH资源。
本公开的一些实施例中提供了一种随机接入方法,包括:
终端侧获取发送MSGA的上行发送资源,其中,发送MSGA的上行发送资源是网络侧配置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同;
终端根据发送的上行数据块大小选择其中一个上行发送资源;
终端在选择的上行发送资源上向网络侧发送MSGA。
实施中,网络侧配置上行发送资源包括:配置PRACH资源和PUSCH资源,以及PRACH资源与PUSCH资源之间的映射关系;
进一步包括:
网络侧针对每种上行数据块的大小分配一个或者多个MCS或TBS,以及每个MCS或TBS对应的上行发送资源的时频资源。
实施中,终端按如下公式确定PRACH资源与PUSCH资源之间的映射关系:
N preamble=ceil(T preamble/αT PUSCH)
其中,ceil为返回大于或者等于指定表达式的最小整数函数,T PUSCH=T PO*N DMRSperPO,T PO=nrofslotsMsgAPUSCH*nrofMsgAPOperSlot,N DMRSperPO从msgA-DMRS-Configuration获得,将N POperTBS=ceil(T PO/T TBS或T MCS),N POperTBS为每个TBS对应的PUSCH发送资源数目,T TBS为TBS index总数,T MCS为MCS index总数,其中,各参数含义如下:
N preamble:在一个周期内,与每个PUSCH资源对应的Preamble index数目或者PRACH资源个数;
T preamble:在一个周期内,Preamble index总数或者PRACH资源总数;
T PUSCH:在一个周期内,PUSCH资源总数;
T PO:在一个周期内,PUSCH发送的机会总数;
nrofslotsMsgAPUSCH:在一个周期内,所有可以承载PUSCH发送的总的时隙数;
nrofMsgAPOperSlot:每个slot里面的PUSCH发送时隙的个数;
N DMRSperPO:每个PUSCH发送时隙所带有的DMRS的个数;
α:在一个周期内TPO里面的PUSCH资源聚合等级,取值为α≤1。
实施中,TBS索引序号或者MCS索引序号与上行发送资源的分配关系为:
对PUSCH资源排序,在频域上PUSCH occasion由低到高排序,在时域上按照PUSCH slot index由低到高;
为多个MCS或TBS分配一个或者多个PUSCH occasion,其中,将N POperTBS=ceil(T PO/T TBS),TBS index或MCS index与PUSCH匹配公式为:第k个PUSCH发送资源对应的第j个TBS index或MCS index:
jTBSindex或jMCSindex=mod(kPUSCHindex,T TBS或T MCS);或,
由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配N POperTBS
或者,
由高层信令指定MCS index或TBS index对应的PUSCH occasion的数目,并由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配分别为N 1,N 2,N 3…N n,N 1+N 2+N 3+…+N n=T PO
其中,N POperTBS为每个TBS或MCS对应的PUSCH发送资源数目;T TBS为TBS index总数;T PO为在一个周期内,PUSCH发送的机会总数;T MCS为MCS index总数。
实施中,终端按如下方式之一或者其组合确定网络侧的配置:
终端根据与网络侧预先约定TBS索引序号或者MCS索引序号与上行发送资源的映射关系,确定网络侧配置的上行发送资源,以及TBS或者MCS;或,
终端按MCS index,以及不同TBS索引序号或者MCS索引序号,与上行发送资源对应关系,和,确定在网络侧配置的MSGA中的任意上行发送资源上发送MSGA;或,
终端根据网络侧广播通知的上行发送资源与TBS索引序号或者MCS索引序号的映射关系确定网络侧配置的上行发送资源,以及TBS或者MCS。
实施中,终端确定网络侧配置的上行发送资源,以及TBS或者MCS,包括:
从接收到广播信令中确定出TBS或MCS,以及MSGA中PRACH资源和PUSCH资源;
根据映射关系确定出MSGA中每个上行发送资源可以承载的信息比特量;
终端根据需发送的上行数据块大小选择其中一个上行发送资源以及确定对应的TBS或MCS。
实施中,终端确定网络侧配置的上行发送资源,以及TBS或者MCS,包括:
从接收到广播信令中确定出TBS索引序号或MCS索引序号,以及针对该TBS索引序号或MCS索引序号在MSGA中分配的PRACH资源和PUSCH资源;
确定出每个TBS索引序号或MCS索引序号对应的MSGA中每个上行发送资源可以承载的信息比特量;
终端根据需发送的上行数据块大小选择其中一个上行发送资源以及确定对应的TBS或MCS。
实施中,终端确定对应的TBS或MCS,包括:
若广播信令中的MCS是固定的MCS等级,终端确定相应的TBS;
若广播信令中的MCS是多个MCS等级,终端根据RSRP和/或SINR选定能够匹配的一个或者多个MCS等级,针对多个匹配的MCS等级,选择MCS最低等级作为最终发送的MCS等级。
实施中,当一个MCS等级有多个上行发送资源可选时,终端从中随机选择出一个上行发送资源,或,按上行发送资源的时频资源时序选择出一个上行发送资源。
实施中,终端根据网络侧按如下方式之一或者其组合的指示确定TBS索引或者MCS索引与上行发送资源的映射关系:
确定上行发送资源编号,通过上行发送资源编号确定所述映射关系,其中,TBS索引或者MCS索引与上行发送资源编号的映射关系是预设的;或,
根据广播指示的TBS索引或者MCS索引确定该TBS索引或者MCS索引能在任一上行发送资源上发送,其中,广播指示的TBS索引或者MCS索引能在任一上行发送资源上发送是预设的;或,
根据广播指示确定TBS索引或者MCS索引以及对应的上行发送资源。
实施中,在所述PRACH资源与PUSCH资源之间的映射关系中,PRACH资源按组分配,PUSCH资源按组分配,其中:
一组PRACH资源对应至少两组PUSCH资源;或,
一组PRACH资源对应一组PUSCH资源。
实施中,在一组PRACH资源对应至少两组PUSCH资源时,一组PRACH资源中的每个PRACH资源对应每组PUSCH资源中的一个PUSCH资源;或者,
一组PRACH资源分为若干小组的PRACH资源,每小组PRACH资源对应一组PUSCH资源。
本公开的一些实施例中提供了一种基站,基站包括:
处理器,用于读取存储器中的程序,执行下列过程:
接收终端发送的MSGA,其中,发送MSGA的上行发送资源是网络侧配 置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同,终端根据发送的上行数据块大小选择其中一个上行发送资源来发送MSGA;
向终端发送MSGB;
收发机,用于在处理器的控制下接收和发送数据。
实施中,配置上行发送资源包括:配置PRACH资源和PUSCH资源,以及PRACH资源与PUSCH资源之间的映射关系;
进一步包括:
针对每种上行数据块的大小分配一个或者多个MCS或TBS,以及每个MCS或TBS对应的上行发送资源的时频资源。
实施中,按如下公式建立PRACH资源与PUSCH资源之间的映射关系:
N preamble=ceil(T preamble/αT PUSCH)
其中,ceil为返回大于或者等于指定表达式的最小整数函数,T PUSCH=T PO*N DMRSperPO,T PO=nrofslotsMsgAPUSCH*nrofMsgAPOperSlot,N DMRSperPO从msgA-DMRS-Configuration获得,将N POperTBS=ceil(T PO/T TBS或T MCS),N POperTBS为每个TBS对应的PUSCH发送资源数目,T TBS为TBS index总数,T MCS为MCS index总数,其中,各参数含义如下:
N preamble:在一个周期内,与每个PUSCH资源对应的Preamble index数目或者PRACH资源个数;
T preamble:在一个周期内,Preamble index总数或者PRACH资源总数;
T PUSCH:在一个周期内,PUSCH资源总数;
T PO:在一个周期内,PUSCH发送的机会总数;
nrofslotsMsgAPUSCH:在一个周期内,所有可以承载PUSCH发送的总的时隙数;
nrofMsgAPOperSlot:每个slot里面的PUSCH发送时隙的个数;
N DMRSperPO:每个PUSCH发送时隙所带有的DMRS的个数;
α:在一个周期内TPO里面的PUSCH资源聚合等级,取值为α≤1。
实施中,TBS索引序号或者MCS索引序号与上行发送资源的分配关系为:
对PUSCH资源排序,在频域上PUSCH occasion由低到高排序,在时域上按照PUSCH slot index由低到高;
为多个MCS或TBS分配一个或者多个PUSCH occasion,其中,将N POperTBS=ceil(T PO/T TBS),TBS index或MCS index与PUSCH匹配公式为:第k个PUSCH发送资源对应的第j个TBS index或MCS index:
jTBSindex或jMCSindex=mod(kPUSCHindex,T TBS或T MCS);或,
由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配N POperTBS
或者,
由高层信令指定MCS index或TBS index对应的PUSCH occasion的数目, 并由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配分别为N 1,N 2,N 3…N n,N 1+N 2+N 3+…+N n=T PO
其中,N POperTBS为每个TBS或MCS对应的PUSCH发送资源数目;T TBS为TBS index总数;T PO为在一个周期内,PUSCH发送的机会总数;T MCS为MCS index总数。
实施中,按如下方式之一或者其组合进行配置:
配置上行发送资源,以及不同的TBS索引序号或者MCS索引序号,其中,网络侧和UE预先约定TBS索引序号或者MCS索引序号与上行发送资源的映射关系;或,
配置多个可以在MSGA中的任意上行发送资源发送的MCS index,以及不同的TBS索引序号或者MCS索引序号,其中,网络不为每个TBS或MCS分配专属的MSGA中的上行发送资源,网络侧在上行发送资源上盲解编码调制方式;或,
配置上行发送资源,以及上行发送资源与TBS索引序号或者MCS索引序号的映射关系,其中,通过广播通知UE所述上行发送资源与TBS索引序号或者MCS索引序号的映射关系。
实施中,按如下方式之一或者其组合指示UE TBS索引或者MCS索引与上行发送资源的映射关系:
将上行发送资源编号,预设TBS索引或者MCS索引与上行发送资源编号的映射关系,通过上行发送资源编号指示所述映射关系;或,
预设广播指示的TBS索引或者MCS索引能在任一上行发送资源上发送,通过广播指示TBS索引或者MCS索引;或,
通过广播指示TBS索引或者MCS索引以及对应的上行发送资源。
实施中,在所述PRACH资源与PUSCH资源之间的映射关系中,PRACH资源按组分配,PUSCH资源按组分配,其中:
一组PRACH资源对应至少两组PUSCH资源;或,
一组PRACH资源对应一组PUSCH资源。
实施中,在一组PRACH资源对应至少两组PUSCH资源时,一组PRACH资源中的每个PRACH资源对应每组PUSCH资源中的一个PUSCH资源;或者,
一组PRACH资源分为若干小组的PRACH资源,每小组PRACH资源对应一组PUSCH资源。
本公开的一些实施例中提供了一种用户设备,用户设备包括:
处理器,用于读取存储器中的程序,执行下列过程:
获取发送MSGA的上行发送资源,其中,发送MSGA的上行发送资源是网络侧配置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同;
根据发送的上行数据块大小选择其中一个上行发送资源;
在选择的上行发送资源上向网络侧发送MSGA;
收发机,用于在处理器的控制下接收和发送数据。
实施中,网络侧配置上行发送资源包括:配置PRACH资源和PUSCH资源,以及PRACH资源与PUSCH资源之间的映射关系;
进一步包括:
网络侧针对每种上行数据块的大小分配一个或者多个MCS或TBS,以及每个MCS或TBS对应的上行发送资源的时频资源。
实施中,按如下公式确定PRACH资源与PUSCH资源之间的映射关系:
N preamble=ceil(T preamble/αT PUSCH)
其中,ceil为返回大于或者等于指定表达式的最小整数函数,T PUSCH=T PO*N DMRSperPO,T PO=nrofslotsMsgAPUSCH*nrofMsgAPOperSlot,N DMRSperPO从msgA-DMRS-Configuration获得,将N POperTBS=ceil(T PO/T TBS或T MCS),N POperTBS为每个TBS对应的PUSCH发送资源数目,T TBS为TBS index总数,T MCS为MCS index总数,其中,各参数含义如下:
N preamble:在一个周期内,与每个PUSCH资源对应的Preamble index数目或者PRACH资源个数;
T preamble:在一个周期内,Preamble index总数或者PRACH资源总数;
T PUSCH:在一个周期内,PUSCH资源总数;
T PO:在一个周期内,PUSCH发送的机会总数;
nrofslotsMsgAPUSCH:在一个周期内,所有可以承载PUSCH发送的总的时隙数;
nrofMsgAPOperSlot:每个slot里面的PUSCH发送时隙的个数;
N DMRSperPO:每个PUSCH发送时隙所带有的DMRS的个数;
α:在一个周期内TPO里面的PUSCH资源聚合等级,取值为α≤1。
实施中,TBS索引序号或者MCS索引序号与上行发送资源的分配关系为:
对PUSCH资源排序,在频域上PUSCH occasion由低到高排序,在时域上按照PUSCH slot index由低到高;
为多个MCS或TBS分配一个或者多个PUSCH occasion,其中,将N POperTBS=ceil(T PO/T TBS),TBS index或MCS index与PUSCH匹配公式为:第k个PUSCH发送资源对应的第j个TBS index或MCS index:
jTBSindex或jMCSindex=mod(kPUSCHindex,T TBS或T MCS);或,
由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配N POperTBS
或者,
由高层信令指定MCS index或TBS index对应的PUSCH occasion的数目,并由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配分别为N 1,N 2,N 3…N n,N 1+N 2+N 3+…+N n=T PO
其中,N POperTBS为每个TBS或MCS对应的PUSCH发送资源数目;T TBS为TBS index总数;T PO为在一个周期内,PUSCH发送的机会总数;T MCS为 MCS index总数。
实施中,按如下方式之一或者其组合确定网络侧的配置:
根据与网络侧预先约定TBS索引序号或者MCS索引序号与上行发送资源的映射关系,确定网络侧配置的上行发送资源,以及TBS或者MCS;或,
按MCS index,以及不同TBS索引序号或者MCS索引序号,与上行发送资源对应关系,和,确定在网络侧配置的MSGA中的任意上行发送资源上发送MSGA;或,
根据网络侧广播通知的上行发送资源与TBS索引序号或者MCS索引序号的映射关系确定网络侧配置的上行发送资源,以及TBS或者MCS。
实施中,确定网络侧配置的上行发送资源,以及TBS或者MCS,包括:
从接收到广播信令中确定出TBS或MCS,以及MSGA中PRACH资源和PUSCH资源;
根据映射关系确定出MSGA中每个上行发送资源可以承载的信息比特量;
根据需发送的上行数据块大小选择其中一个上行发送资源以及确定对应的TBS或MCS。
实施中,确定网络侧配置的上行发送资源,以及TBS或者MCS,包括:
从接收到广播信令中确定出TBS索引序号或MCS索引序号,以及针对该TBS索引序号或MCS索引序号在MSGA中分配的PRACH资源和PUSCH资源;
确定出每个TBS索引序号或MCS索引序号对应的MSGA中每个上行发送资源可以承载的信息比特量;
根据需发送的上行数据块大小选择其中一个上行发送资源以及确定对应的TBS或MCS。
实施中,确定对应的TBS或MCS,包括:
若广播信令中的MCS是固定的MCS等级,确定相应的TBS;
若广播信令中的MCS是多个MCS等级,根据RSRP和/或SINR选定能够匹配的一个或者多个MCS等级,针对多个匹配的MCS等级,选择MCS最低等级作为最终发送的MCS等级。
实施中,当一个MCS等级有多个上行发送资源可选时,从中随机选择出一个上行发送资源,或,按上行发送资源的时频资源时序选择出一个上行发送资源。
实施中,根据网络侧按如下方式之一或者其组合的指示确定TBS索引或者MCS索引与上行发送资源的映射关系:
确定上行发送资源编号,通过上行发送资源编号确定所述映射关系,其中,TBS索引或者MCS索引与上行发送资源编号的映射关系是预设的;或,
根据广播指示的TBS索引或者MCS索引确定该TBS索引或者MCS索引能在任一上行发送资源上发送,其中,广播指示的TBS索引或者MCS索引能在任一上行发送资源上发送是预设的;或,
根据广播指示确定TBS索引或者MCS索引以及对应的上行发送资源。
实施中,在所述PRACH资源与PUSCH资源之间的映射关系中,PRACH资源按组分配,PUSCH资源按组分配,其中:
一组PRACH资源对应至少两组PUSCH资源;或,
一组PRACH资源对应一组PUSCH资源。
实施中,在一组PRACH资源对应至少两组PUSCH资源时,一组PRACH资源中的每个PRACH资源对应每组PUSCH资源中的一个PUSCH资源;或者,
一组PRACH资源分为若干小组的PRACH资源,每小组PRACH资源对应一组PUSCH资源。
本公开的一些实施例中提供了一种随机接入装置,包括:
网络侧接收模块,用于接收终端发送的MSGA,其中,发送MSGA的上行发送资源是网络侧配置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同,终端根据发送的上行数据块大小选择其中一个上行发送资源来发送MSGA;
网络侧发送模块,用于向终端发送MSGB。
本公开的一些实施例中提供了一种随机接入装置,包括:
终端侧获取模块,用于获取发送MSGA的上行发送资源,其中,发送MSGA的上行发送资源是网络侧配置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同;
终端侧选择模块,用于根据发送的上行数据块大小选择其中一个上行发送资源;
终端侧发送模块,用于在选择的上行发送资源上向网络侧发送MSGA。
本公开的一些实施例中提供了一种计算机可读存储介质,所述计算机可读存储介质存储有执行上述随机接入方法的程序。
本公开有益效果如下:
在本公开的一些实施例提供的技术方案中,由于在随机接入过程中,网络侧会配置多个发送MSGA的上行发送资源,每个上行发送资源上发送的上行数据块大小不同,而终端则可以根据发送的上行数据块大小选择其中一个上行发送资源来发送MSGA。由于终端可以根据自身需要发送的数据块大小选择相应的上行发送资源,也因此可以根据不同用户的需求灵活地为一个或多个用户提供不同数据块传输。
附图说明
此处所说明的附图用来提供对本公开的进一步理解,构成本公开的一部分,本公开的示意性实施例及其说明用于解释本公开,并不构成对本公开的不当限定。在附图中:
图1为背景技术中四步竞争随机接入过程(4-step RACH)示意图;
图2为背景技术中两步竞争随机接入过程(2-step RACH)示意图;
图3为本公开的一些实施例中网络侧随机接入方法实施流程示意图;
图4为本公开的一些实施例中终端侧随机接入方法实施流程示意图;
图5为本公开的一些实施例中资源分配示意图;
图6为本公开实施例1中的PRACH和PUSCH时频资源分配以及对应关系示意图;
图7为本公开的一些实施例中2组PRACH group与PUSCH group资源一对一映射示意图;
图8为本公开的一些实施例中多组PRACH group与PUSCH group资源一对一映射示意图;
图9为本公开的一些实施例中多组PRACH group与PUSCH group资源一对一映射示意图;
图10为本公开的一些实施例中多组PRACH group与PUSCH group资源一对多映射示意图;
图11为本公开的一些实施例中PRACH group与PUSCH group资源一对多映射方式1示意图;
图12为本公开的一些实施例中PRACH group与PUSCH group资源一对多映射方式2示意图;
图13为本公开实施例2中的PRACH和PUSCH时频资源分配以及对应关系示意图;
图14为本公开实施例3中的RACH中MsgA的PRACH和PUSCH时频资源分配以及对应关系示意图;
图15为本公开实施例4中2-step RACH中MsgA的PRACH和PUSCH时频资源分配以及对应关系示意图;
图16为本公开实施例4中方式(3)之方式1中的PRACH和PUSCH时频资源分配以及对应关系示意图;
图17为本公开实施例4中方式(3)方式2中的PRACH和PUSCH时频资源分配以及对应关系示意图;
图18为本公开实施例5终端侧的基于MC Slevel的PRACH和PUSCH资源选择流程示意图;
图19为本公开实施例7终端侧的基于MCS level的PRACH和PUSCH资源选择流程示意图;
图20为本公开实施例8终端侧的基于MCS level的PRACH和PUSCH资源选择流程示意图;
图21为本公开的一些实施例中基站结构示意图;
图22为本公开的一些实施例中UE结构示意图;
图23为本公开的一些实施例中α=1/2时的资源分配示意图1;
图24为本公开的一些实施例中α=1/4时的资源分配示意图;
图25为本公开的一些实施例中α=1/2时的资源分配示意图2。
具体实施方式
发明人在发明过程中注意到:
针对2-step RACH的MsgA中的上行数据传输PUSCH支持的比特数目是有限的56个比特或者72个比特,在非连接态,网络不支持大数据块(600-800比特甚至1000比特)传输。
另外相关技术也不支持多种数据块类型传输。
网络支持仅预先给PUSCH分配固定编码调制方式MCS(调制和编码方案,Modulation and coding scheme)以及固定的时频资源来支持少量比特传输。
基于此,本公开的一些实施例提供的技术方案将在UE向网络发起随机接入的过程中,在非连接状态下,根据不同用户的需求,灵活地为一个或多个用户提供不同数据块传输。下面结合附图对本公开的具体实施方式进行说明。
在说明过程中,将分别从UE与基站侧的实施进行说明,然后还将给出二者配合实施的实例以更好地理解本公开的一些实施例中给出的方案的实施。这样的说明方式并不意味着二者必须配合实施、或者必须单独实施,实际上,当UE与基站分开实施时,其也各自解决UE侧、基站侧的问题,而二者结合使用时,会获得更好的技术效果。
图3为网络侧随机接入方法实施流程示意图,如图所示,可以包括:
步骤301、网络侧接收终端发送的MSGA,其中,发送MSGA的上行发送资源是网络侧配置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同,终端根据发送的上行数据块大小选择其中一个上行发送资源来发送MSGA;
步骤302、网络侧向终端发送MSGB。
图4为终端侧随机接入方法实施流程示意图,如图所示,可以包括:
步骤401、终端侧获取发送MSGA的上行发送资源,其中,发送MSGA的上行发送资源是网络侧配置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同;
步骤402、终端根据发送的上行数据块大小选择其中一个上行发送资源;
步骤403、终端在选择的上行发送资源上向网络侧发送MSGA。
具体的,网络侧针对2-step RACH的过程中的MSGA能够支持多种(包括大于2种以上)的上行数据块大小(从几十比特到上千比特)同时传输,通过网络配置或者物理层映射,将不同的数据块分配到一个或者多个MCS和对应的时频资源上,同时网络也配置了MSGA中的PRACH资源与PUSCH资源映射关系,或者网络和终端预定约定的MSGA中的PRACH资源与PUSCH资源映射关系。终端根据网络配置计算MSGA的每个上行发送资源的承载能力与自身的实际发送数据相比较,找到合适的MSGA上行发送资源将上行数据发送出去。
实施中,网络侧配置上行发送资源包括:配置PRACH资源和PUSCH资源,以及PRACH资源与PUSCH资源之间的映射关系;
进一步包括:
网络侧针对每种上行数据块的大小分配一个或者多个MCS或TBS,以及每个MCS或TBS对应的上行发送资源的时频资源。
具体的,从网络侧角度上,一个流程主要包含四个步骤:
1、网络配置多个MSGA上行发送资源来支持大于2种以上的上行数据块大小(从几十比特到上千比特)同时传输。
2、上行发送资源包括PRACH资源和PUSCH资源,网络配置了PRACH资源和PUSCH资源以及映射关系。同时针对多种上行数据块大小(大于2种以上)分配了一个或者多个MCS和对应的时频资源。
3、网络接收来自终端的MSGA。
4、网络发送MSGB给终端;也即将RAR(随机接入响应,random-access-response)发送给终端。
从终端侧角度上,一个流程主要包含三个步骤:
1、UE获取网络侧的多套MSGA配置;
2、UE基于特定的规则选择一套MSG A配置,例如根据RSRP(参考信号接收功率,Reference Signal Received Power)、SINR(信号与干扰和噪声比,Signal to Interference plus Noise Ratio)、发送数据的大小来选择;
3、UE按照选择的配置进行MSGA发送。
图5为资源分配示意图,如图所示,设需通过MSGA上行发送资源来发送的上行数据块大小为三种,分别为图中示意图的:Data1为50-70比特,Data2为300比特、Data3为1000比特,如图,对应的在MSGA的上行发送资源PUSCH分别为:
Data1:XPRB(物理资源块,physical resource block),MCS=N1=TBS(传输块大小,Transport-block Size)size M1;
Data2:YPRB,MCS=N2=TBS size M2;
Data3:ZPRB,MCS=N3=TBS size M3。
实施中,可以按如下公式建立PRACH资源与PUSCH资源之间的映射关系:
N preamble=ceil(T preamble/αT PUSCH)
其中,ceil为返回大于或者等于指定表达式的最小整数函数,T PUSCH=T PO*N DMRSperPO,T PO=nrofslotsMsgAPUSCH*nrofMsgAPOperSlot,N DMRSperPO从msgA-DMRS-Configuration获得,将N POperTBS=ceil(T PO/T TBS或T MCS),N POperTBS为每个TBS对应的PUSCH发送资源数目,T TBS为TBS index总数,T MCS为MCS index总数,其中,各参数含义如下:
N preamble:在一个周期内,与每个PUSCH资源对应的Preamble index数目或者PRACH资源个数;
T preamble:在一个周期内,Preamble index总数或者PRACH资源总数;
T PUSCH:在一个周期内,PUSCH资源总数;
T PO:在一个周期内,PUSCH发送的机会总数;
nrofslotsMsgAPUSCH:在一个周期内,所有可以承载PUSCH发送的总的时隙数;
nrofMsgAPOperSlot:每个slot里面的PUSCH发送时隙的个数;
N DMRSperPO:每个PUSCH发送时隙所带有的DMRS(解调参考信号,demodulated reference signal)的个数;
α:在一个周期内TPO里面的PUSCH资源聚合等级,取值为α≤1。
α的具体实施请参见下述实施例9。
实施中,TBS索引序号或者MCS索引序号与上行发送资源的分配关系可以为:
对PUSCH资源排序,在频域上PUSCH occasion由低到高排序,在时域上按照PUSCH slot index由低到高;
为多个MCS或TBS分配一个或者多个PUSCH occasion,其中,将N POperTBS=ceil(T PO/T TBS),TBS index或MCS index与PUSCH匹配公式为:第k个PUSCH发送资源对应的第j个TBS index或MCS index:
jTBSindex或jMCSindex=mod(kPUSCHindex,T TBS或T MCS);或,
由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配N POperTBS
或者,
由高层信令指定MCS index或TBS index对应的PUSCH occasion的数目,并由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配分别为N 1,N 2,N 3…N n,N 1+N 2+N 3+…+N n=T PO
其中,N POperTBS为每个TBS或MCS对应的PUSCH发送资源数目;T TBS为TBS index总数;T PO为在一个周期内,PUSCH发送的机会总数;T MCS为MCS index总数。
具体的,对TBS或MCS对应PUSCH的规则在实施中可以如下:
首先,给PUSCH资源排序,原则先是从最低的PUSCH slot index开始,在频域上的PUSCH occasion由低到高排序,然后在按照PUSCH slot index由低到高;
接着,可以给多个MCS/TBS分配一个或者多个PUSCH occasion,分配原则为:同时将N POperTBS=ceil(T PO/T TBS),NPOperTBS为每个TBS对应的PUSCH发送资源数目,TTBS为TBS index总数;为了减少频域衰落信道的影响,TBS index与PUSCH匹配公式如下:第k个PUSCH发送资源对应的第j个TBS index:
jTBSindex或jMCSindex=mod(kPUSCHindex,T TBS或T MCS);
或者,也可以先由TBS index最低的开始,由低到高,为每个TBS index分配N POperTBS
实施中,上面的TBS可以由MCS等价替换。
或者,另一种方式是:由高层信令直接指定MCS index对应的PUSCH occasion的数目;对应原则由TBS index最低的开始,由低到高,每个TBS index分配分别为:N 1,N 2,N 3…N n,N 1+N 2+N 3+…+N n=T PO
1、下面先对网络侧的资源配置的实施方式进行说明。
实施中,网络侧可以按如下方式之一或者其组合进行配置:
网络侧配置上行发送资源,以及不同的TBS索引序号或者MCS索引序号,其中,网络侧和UE预先约定TBS索引序号或者MCS索引序号与上行发送资源的映射关系;或,
网络侧配置多个可以在MSGA中的任意上行发送资源发送的MCS index,以及不同的TBS索引序号或者MCS索引序号,其中,网络不为每个TBS或MCS分配专属的MSGA中的上行发送资源,网络侧在上行发送资源上盲解编码调制方式;或,
网络侧配置上行发送资源,以及上行发送资源与TBS索引序号或者MCS索引序号的映射关系,其中,网络侧通过广播通知UE所述上行发送资源与TBS索引序号或者MCS索引序号的映射关系。
具体的,在网络侧进行资源配置时,网络侧广播所需要支持的TBS或者MCS的具体信息和数量,以及MSGA的上行发送资源。至少有以下三种网络配置方式:
第1种方式:
网络侧配置总的MSGA上行发送资源(包括preamble资源以及PUSCH上行发送资源),以及其对应的不同TBS索引序号或者MCS索引序号。该方式下,网络侧和UE需要约定TBS索引序号或者MCS索引序号与MSGA上行发送资源的映射关系。
第2种方式:
网络侧配置的多个MCS索引序号,这些MCS都是可以在MSGA中的任意上行发送资源发送。网络不需要为每个MCS分配专属的MSGA中的上行发送资源。该方式下的网络侧需要在上行发送资源上盲解编码调制方式。
第3种方式:
网络侧直接广播TBS索引序号或者MCS索引序号和对应的MSGA上行发送资源(包括:preamble资源+PUSCH上行发送资源),该方式下,网络侧和UE不需要约定TBS索引序号或者MCS索引序号与MSGA上行发送资源的映射关系。UE根据网络侧广播的配置找到相应的上行发送资源。
2、针对网络侧的三种资源配置方案,下面对UE侧的实施进行说明。
第1种网络配置方法:
实施中,终端确定网络侧配置的上行发送资源,以及TBS或者MCS,包括:
从接收到广播信令中确定出TBS或MCS,以及MSGA中PRACH资源和PUSCH资源;
根据映射关系确定出MSGA中每个上行发送资源可以承载的信息比特量;
终端根据需发送的上行数据块大小选择其中一个上行发送资源以及确定对应的TBS或MCS。
具体可以如下:
UE在接收到广播信令中包含的TBS/MCS的具体信息和数量,以及MSGA中preamble资源分配和PUSCH资源分配,据此,UE就会知道目前网络配置的MSGA的上行发送资源的具体位置和总数,以及网络目前指示的TBS/MCS的具体信息和数量。
UE可以根据与网络预先约定的每个资源编号与TBS/MCS序号建立的映射关系,计算出MSGA上每个上行发送资源可以承载多少信息比特。
然后,UE根据自身业务需要计算出自己要发送的比特数目,将其与每个资源所承载的比特数相比较,找到≥自身发送比特数且最接近自身需要发送的比特数对应的发送资源。
实施中,终端确定对应的TBS或MCS,包括:
若广播信令中的MCS是固定的MCS等级,终端确定相应的TBS;
若广播信令中的MCS是多个MCS等级,终端根据RSRP和/或SINR选定能够匹配的一个或者多个MCS等级,针对多个匹配的MCS等级,选择MCS最低等级作为最终发送的MCS等级。
具体实施中,当一个MCS等级有多个上行发送资源可选时,终端从中随机选择出一个上行发送资源,或,按上行发送资源的时频资源时序选择出一个上行发送资源。
具体的,可以考虑两点:如果网络广播的是固定的MCS等级,那么只需要考虑TBS大小和上行发送资源块的大小;如果网络广播的是多个MCS等级序号,UE可以先根据RSRP、SINR来在广播信令中指示的多个MCS等级序号中选定一个或者多个能够匹配的MCS等级,然后在找到对应MCS等级的MSGA的上行发送资源,并据此来确定每个资源承载的数据比特,再与自身的实际发送比特相比较,最终找到合适上行发送资源。
进一步的,如果一个MCS等级存在多个MSGA的上行发送资源可以选择,UE可以随机选择或者将时频资源排序找到第一资源即可;如果必要,添加填充比特,然后根据资源块对应的MCS等级进行调制编码,在选好的资源块上发送数据。
第2种网络配置方法:
实施中,终端确定网络侧配置的上行发送资源,以及TBS或者MCS,包括:
从接收到广播信令中确定出TBS索引序号或MCS索引序号,以及针对该TBS索引序号或MCS索引序号在MSGA中分配的PRACH资源和PUSCH资源;
确定出每个TBS索引序号或MCS索引序号对应的MSGA中每个上行发送资源可以承载的信息比特量;
终端根据需发送的上行数据块大小选择其中一个上行发送资源以及确定对应的TBS或MCS。
UE在接收到广播信令中包含的TBS/MCS的索引序号和数量,以及针对UE接收到的广播信令中包含的TBS/MCS的索引序号而分配的MSGA上行发送资源(包括:preamble资源分配以及PUSCH资源分配)。
UE据此知道目前网络配置的TBS/MCS的具体信息和数量,以及每个TBS/MCS索引对应的MSGA上行发送资源的位置和数量。
由此UE可以计算出MSGA在每个上行发送资源可以承载多少信息比特,然后,UE根据自身业务需要计算出自己需要发送的比特数目,将其与每个资源所承载的比特数相比较,找到≥自身发送比特数且最接近自身需要发送的比特数的对应的发送资源。
实施中,终端确定对应的TBS或MCS,包括:
若广播信令中的MCS是固定的MCS等级,终端确定相应的TBS;
若广播信令中的MCS是多个MCS等级,终端根据RSRP和/或SINR选定能够匹配的一个或者多个MCS等级,针对多个匹配的MCS等级,选择MCS最低等级作为最终发送的MCS等级。
具体实施中,当一个MCS等级有多个上行发送资源可选时,终端从中随机选择出一个上行发送资源,或,按上行发送资源的时频资源时序选择出一个上行发送资源。
具体的,可以考虑两点:如果网络广播的是固定的MCS等级,那么只需要考虑TBS大小,当然实施中也要考虑是否为目前的RSRP和SINR能使用的MSGA资源;如果UE不能使用该MSGA上行发送资源,还需要选择正常的接入方式,接入网络后再进行发送;
如果网络广播的是多个MCS等级序号,UE可以先根据RSRP、SINR来来在广播信令中指示的多个MCS等级序号中选定一个或者多个能够匹配的MCS等级,然后在找到对应MCS等级的MSGA的上行发送资源,并据此来确定每个资源承载的数据比特,再与自身的实际发送比特相比较,最终找到合适上行发送资源;如果有多个匹配的MCS等级,在多个匹配的MCS等级中选择MCS最低等级作为最终发送的MCS等级然后确定其对应的上行发送资源为最终合适的上行发送资源。
进一步的,如果必要,添加填充比特,然后根据资源块对应的MCS等级进行调制编码,在选好的资源块上发送数据。
3、下面对MSGA资源与TBS index/MCS index的映射关系的三种实施方式进行说明。
实施中,网络侧可以按如下方式之一或者其组合指示UE TBS索引或者MCS索引与上行发送资源的映射关系:
将上行发送资源编号,预设TBS索引或者MCS索引与上行发送资源编号的映射关系,通过上行发送资源编号指示所述映射关系;或,
预设广播指示的TBS索引或者MCS索引能在任一上行发送资源上发送, 通过广播指示TBS索引或者MCS索引;或,
通过广播指示TBS索引或者MCS索引以及对应的上行发送资源。
相应的,实施中,终端按如下方式之一或者其组合确定网络侧的配置:
终端根据与网络侧预先约定TBS索引序号或者MCS索引序号与上行发送资源的映射关系,确定网络侧配置的上行发送资源,以及TBS或者MCS;或,
终端按MCS index,以及不同TBS索引序号或者MCS索引序号与上行发送资源对应关系,和,确定在网络侧配置的MSGA中的任意上行发送资源上发送MSGA;或,
终端根据网络侧广播通知的上行发送资源与TBS索引序号或者MCS索引序号的映射关系确定网络侧配置的上行发送资源,以及TBS或者MCS。
具体可以如下:
方式1:
本方式是一种隐含指示TBS index/MCS index与MSGA上行发送资源映射关系的方式,映射关系需要UE和网络侧预先确定。
首先,网络侧和UE都需要给MSGA中的上行发送资源排序(包括preamble资源分配和PUSCH资源分配),例如,如果总的资源是N,则需要给每个资源编号(0,1,…,N-1),将每个资源编号与TBS/MCS索引序号建立映射关系。
方式2:
本方式是一种隐含指示TBS index或者MCS index与MSGA上行发送资源映射关系的方式,映射关系需要UE和网络侧预先确定。
网络侧广播的多个TBS index或者MCS index可以在MSGA中的任意上行发送资源发送。网络不需要为每个TBS index或者MCS index分配专属的MSGA中的上行发送资源。
该方式下,网络侧需要在上行发送资源上盲解编码调制方式。
方式3:
本方式是在广播信令中直接携带每个TBS index或者MCS index对应的MSGA的上行发送资源。
4、下面对MSGA资源中Preamble资源与PUSCH资源映射实施方式进行说明。
实施中,在所述PRACH资源与PUSCH资源之间的映射关系中,PRACH资源按组分配,PUSCH资源按组分配,其中:
一组PRACH资源对应至少两组PUSCH资源;或,
一组PRACH资源对应一组PUSCH资源。
具体实施中,在一组PRACH资源对应至少两组PUSCH资源时,一组PRACH资源中的每个PRACH资源对应每组PUSCH资源中的一个PUSCH资源;或者,
一组PRACH资源分为若干小组的PRACH资源,每小组PRACH资源对 应一组PUSCH资源。
具体的,在MSGA资源中Preamble资源与PUSCH资源映射中,MSGA资源中可以包括Preamble group(前导序列组)与PUSCH group(PUSCH组)两组资源,这两组资源映射关系可以如下:
(1)1个Preamble group资源可以对应多个PUSCH group;或者,
(2)1个Preamble group资源可以对应1个PUSCH group。
具体的,在1个Preamble group资源对应多个PUSCH group时,在1个Preamble group中的1个preamble资源(preamble码和RACH发送的资源)可以对应多个PUSCH group中的每个PUSCH group中的1个PUSCH资源;或者,将1个Preamble group资源按照PUSCH group总数分成若干Preamble资源小组,每个资源小组对应一个PUSCH group资源。
在1个Preamble group资源对应1个PUSCH group时,如果有几个Preamble group资源网络,就配置相应数目的PUSCH group资源。
下面通过具体实例进行说明。
一、网络侧的实施说明。
实施例1:
本例中,针对每个TBS数据块,在PUSCH上行资源的时域资源相同、频域资源不同的情况下,来匹配不同TBS。
基站发送广播信令,信令中包括:PUSCH发送资源(包括:PUSCH发送时隙数(nrofslotsMsgAPUSCH),每个时隙包含的PUSCH发送资源个数(nrofMsgAPOperSlot))、TBS索引(MSGA-TBSIndex)、编码调制等级(MSGA-MCS)、时域资源分配(起始码元及PUSCH长度指示SLIV(起始和长度指示器值,start and length indicator value)、在一个时隙内两个PUSCH发送资源的时域间隔(guard Period MsgA PUSCH)、在一个时隙内两个PUSCH发送资源的频域间隔(guard band MsgA PUSCH)、针对PUSCH发送资源的起始频域分配指示(包括:频域起始位置指示(frequencystartMsgAPUSCH)和PRB个数(nrofPRBsperMsgAPOperTBS))、PUSCH发送资源的导频信号配置(msgA-DMRS-Configuration)。
网络侧的广播信息格式可以如表1所示。
表1:实施例1的广播信令包含的物理层信息
Figure PCTCN2021082277-appb-000001
Figure PCTCN2021082277-appb-000002
网络侧在一个周期内分配的MSGA物理层资源,包括总的PRACH资源(T PRACH)和总的PUSCH资源(T PUSCH),PRACH和PUSCH发送资源的对应关系可以如公式1所示,一个PUSCH至少可以对应一个PRACH资源。
N preamble=ceil(T preamble/T PUSCH)  (1)
T PUSCH=T PO x N DMRSperPO,T PO=nrofslotsMsgAPUSCH x nrofMsgAPOperSlot,N DMRSperPO从msgA-DMRS-Configuration获得。同时将N POperTBS=ceil(T PO/T TBS或T MCS),N POperTBS为每个TBS对应的PUSCH发送资源数目,T TBS为TBS index总数,T MCS为MCS index总数;为了减少频域衰落信道的影响,TBS index与PUSCH匹配公式如下:第k个PUSCH发送资源对应的第j个TBS index:
j TBSindex=mod(k PUSCHindex,T TBS)   (2)
其中,各参数含义如下:
N preamble:在一个周期内,与每个PUSCH资源对应的Preamble index数目或者PRACH资源个数;
T preamble:在一个周期内,Preamble index总数或者PRACH资源总数;
T PUSCH:在一个周期内,PUSCH资源总数;
T PO:在一个周期内,PUSCH发送的机会总数;
nrofslotsMsgAPUSCH:在一个周期内,所有可以承载PUSCH发送的总的时隙数;
nrofMsgAPOperSlot:每个slot里面的PUSCH发送时隙的个数;
N DMRSperPO:每个PUSCH发送时隙所带有的DMRS(解调参考信号,demodulated reference signal,)的个数。
当TBS资源均匀分配时,实施中可以如下:PUSCH总发送资源15个,TBS index总数是5个,资源匹配如下表2所示。表中,表横轴代表时域,表纵轴代表频域。
表2:TBSindex与PUSCH发送资源mapping方式
Figure PCTCN2021082277-appb-000003
当TBS资源非均匀分配时,实施中可以如下:PUSCH总发送资源15个,TBS index总数是3个,其中TBS0资源分配数目:TBS1资源分配数:TBS2资源分配数目=2:2:1,资源匹配如下表3所示。表中,表横轴代表时域,表纵轴代表频域。
表3:TBSindex与PUSCH发送资源mapping方式
Figure PCTCN2021082277-appb-000004
图6为实施例1中的PRACH和PUSCH时频资源分配以及对应关系示意图,图7为2组PRACH group与PUSCH group资源一对一映射示意图,图8为多组PRACH group与PUSCH group资源一对一映射示意图,图9为多组PRACH group与PUSCH group资源一对一映射示意图,图10为多组PRACH  group与PUSCH group资源一对多映射示意图,图11为PRACH group与PUSCH group资源一对多映射方式1示意图,图12为PRACH group与PUSCH group资源一对多映射方式2示意图,如图所示,MSGA资源中的PRACH资源与PUSCH资源之间的映射方式可以如下:
MSGA资源中包括PRACH group与PUSCH group两组资源,这两组资源映射关系可以是:1个PRACH group资源对应多个PUSCH group;或者,1个PRACH group资源对应1个PUSCH group。
(1)PRACH group与PUSCH group资源一对一映射,1个PRACH group中的1个preamble资源(preamble码和RACH发送的资源)可以对应多个PUSCH group中的每个PUSCH group中的1个PUSCH资源。
如图7和图8所示,图中的PRACH group与PUSCH group资源是一对一映射,网络可以配置多组PRACH group与PUSCH group资源,每组PRACH group与每组PUSCH group都是一一对应,同时每组PUSCH group的MCS是可配置的,具体到每个PRACH资源和PUSCH资源都可以配置成一一对应,也可以一个PRACH group中的多个PRACH资源对应一个PUSCH group中的一个PUSCH资源。
对应图9所示,网络也可以配置多组PRACH group与PUSCH group资源,有些PUSCH group资源有对应的PRACH group,有些PUSCH group资源没有对应的PRACH group,因为这些PRACH group资源是给固定终端使用的,这些资源有有效的TA(时间提前量,Timing Advanced)要求。
对应图10所示,网络也可以配置多组PRACH group与PUSCH group资源,每个PRACH group资源对应两组或者多组PUSCH group。同时每组PUSCH group的MCS是可配置或者固定的。
(2)PRACH group与PUSCH group资源一对多映射,1个PRACH group资源按照PUSCH group总数分成若干PRACH资源小组,每个资源小组对应一个PUSCH group资源。
1个PRACH group资源可以对应1个PUSCH group的一个资源小组,就是指,如果有几个PRACH group资源小组,网络侧就会配置相应数目的PUSCH group资源,实际上,一个PUSCH group包括多个PUSCH资源,一个PRACHgroup包含多个PRACH group资源小组;
如图11所示,一个PRACH group可以对应二个或者多个PUSCHgroup,一个PRACH group的一个PRACH资源小组可以分别对应两个或者多个PUSCH group里面的一个PUSCH资源,基站可以通过盲解的方式来确定是否两个或者多个PUSCH资源上有数据传输。
如图12所示,一个PRACH group可以对应二个或者多个PUSCHgroup,PRACH group的一部分资源对应第一个PUSCH group里面的PUSCH资源,PRACH group另外一部分资源对应第二个PUSCHgroup里面的PUSCH资源。
图11中,表示每个PRACH资源可以分别对应不同PUSCH group的PUSCH资源,基站(gNB)通过盲解所有可能的PUSCH发送资源来找到终 端发送的PUSCH资源。如果两个UE发送的相同的PRACH+两个不同PUSCH,网络成功解调两个PUSCH数据,那么基站(gNB)发送success RAR(RAR成功),如果不携带定时提前发送信息TA,两个UE知道基站(gNB)成功收到PUSCH承载的上行数据但是PRACH有冲突,所以两个UE会再次只发送PRACH以获得TA。如果网络发送success RAR携带TA,两个UE都使用这个TA进行数据发送,如果数据发送失败,需要再重新开始2-step RACH。
图12中,每个PRACH资源只对应唯一的PUSCH资源。
实施例2:
本例中,针对每个TBS数据块的PUSCH资源中,频域资源相同,时域资源不同的情况来匹配不同TBS。
基站发送广播信令,信令中新的IE(信息单元,Information Element)包括:TBS索引(MSGA-TBS Index)、时域资源分配(起始码元及PUSCH长度指示SLIVperTBS(每个TBS的起始和长度指示器值,start and length indicator value per TBS)针对每个TBS块的SLIV)、PRB个数(nrofPRBsperMsgAPO),网络侧广播信息格式如表4所示。
表4:实施例2中广播信令包含的物理层信息
Figure PCTCN2021082277-appb-000005
具体实施中,这部分实施可以与实施例1的实施相同。
网络侧在一个周期内分配的MSGA物理层资源,包括总的PRACH资源(T PRACH)和总的PUSCH资源(T PUSCH),PRACH和PUSCH发送资源的对应关系可以如公式3所示,一个PUSCH至少可以对应一个PRACH资源。
N preamble=ceil(T preamble/T PUSCH)  (3)
T PUSCH=T PO x N DMRSperPO,T PO=nrofslotsMsgAPUSCH x nrofMsgAPOperSlot,N DMRSperPO从msgA-DMRS-Configuration获得。同时将 N POperTBS=ceil(T PO/T TBS),N POperTBS为每个TBS对应的PUSCH发送资源数目,T TBS为TBS index总数;为了减少频域衰落信道的影响,TBS index与PUSCH匹配公式如下:第k个PUSCH发送资源对应的第j个TBS index:
j TBSindex=mod(k PUSCHindex,T TBS)  (4)
参数含义请参见实施例一中的说明。
当TBS资源均匀分配时,实施中可以如下:PUSCH总发送资源15个,TBS index总数是5个,资源匹配如下表5-1、表5-2、表5-3所示。表中,表横轴代表时域,表纵轴代表频域。
表5-1:TBSindex与PUSCH发送资源mapping方式
Figure PCTCN2021082277-appb-000006
或者,也可以为下表:
表5-2为TBSindex与PUSCH发送资源mapping方式
Figure PCTCN2021082277-appb-000007
TBS资源非均匀分配时,实施中可以如下:PUSCH总发送资源15个,(网络可以根据业务量进行灵活配置)TBS index总数是5个,其中TBS0数目为2,TBS1数目为2,TBS2数目为1,资源匹配如下表6所示。表中,表横轴代表时域,表纵轴代表频域。
表6:TBSindex与PUSCH发送资源mapping方式
Figure PCTCN2021082277-appb-000008
Figure PCTCN2021082277-appb-000009
图13为实施例2中的PRACH和PUSCH时频资源分配以及对应关系示意图,具体实施中,可以参考实施例1中的MSGA资源中的PRACH资源与PUSCH资源之间的映射实施方式。
实施例3:
本例中,针对每个TBS数据块的PUSCH资源中,可以按时频资源都不同的情况来匹配不同TBS。
基站发送广播信令,信令中包括新的IE为:TBS索引(MSGA-TBS Index)、时域资源分配(起始码元及PUSCH长度指示symbol length indicator value SLIVperTBS(start symbol and length MsgA PO)针对每个TBS块的SLIV)、PRB个数(nrofPRBsperMsgAPOperTBS),网络侧广播信息格式如表7所示。
表7:实施例3中的广播信令包含新的物理层信息
Figure PCTCN2021082277-appb-000010
具体实施中,这部分实施可以与实施例1的实施相同。
网络侧在一个周期内分配的的MSGA物理层资源,包括总的PRACH资源(T PRACH)和总的PUSCH资源(T PUSCH),PRACH和PUSCH发送资源的 对应关系可以如公式5所示,一个PUSCH至少可以对应一个PRACH资源。
N preamble=ceil(T preamble/T PUSCH)   (5)
T PUSCH=T PO x N DMRSperPO,T PO=nrofslotsMsgAPUSCH x nrofMsgAPOperSlot,N DMRSperPO从msgA-DMRS-Configuration获得。同时将N POperTBS=ceil(T PO/T TBS),N POperTBS为每个TBS对应的PUSCH发送资源数目,T TBS为TBS index总数;为了减少频域衰落信道的影响,TBS index与PUSCH匹配公式如下:第k个PUSCH发送资源对应的第j个TBS index:
j TBSindex=mod(k PUSCHindex,T TBS)   (6)
参数含义请参见实施例一中的说明。
当TBS资源均匀分配时,实施中可以如下:PUSCH总发送资源15个,TBS index总数是5个,资源匹配如下表8所示。表中,表横轴代表时域,表纵轴代表频域。
表8:TBSindex与PUSCH发送资源mapping方式
Figure PCTCN2021082277-appb-000011
当TBS资源非均匀分配时,实施中可以如下:PUSCH总发送资源15个,TBS index总数是5个,其中TBS0数目为2,TBS1数目为2,TBS2数目为1,资源匹配如下表9所示。表中,表横轴代表时域,表纵轴代表频域。
表9:TBSindex与PUSCH发送资源mapping方式
Figure PCTCN2021082277-appb-000012
图14为实施例3中的RACH中MsgA的PRACH和PUSCH时频资源分配以及对应关系示意图,具体实施中,可以参考实施例1中的MSGA资源中 的PRACH资源与PUSCH资源之间的映射实施方式。
实施例4:
本例中,针对2-step RACH的MSGA中的上行数据传输PUSCH支持多种传输块(TBS),分配固定的时频资源,同时针对每个TBS分配相应的调制编码等级(MCS level)。
网络侧至少有三种方式将MCS和MSGA上行发送资源相关联。
(1)网络侧可以针对每个MCS分配专属的MSGA上行发送资源。
基站发送广播信令,信令中新的IE包括:编码调制等级索引(MSGA-MCSindex i)(网络可以配置多个索引)、时域资源分配(起始码元及PUSCH长度指示start and length indicator value SLIVperMCSindex(start and lengthperMCSindex))、PRB个数(nrofPRBsperMsgAPOperMCS)。
网络侧广播信息格式如表10所示。UE和网络侧事先约定PUSCH资源与MCS匹配方式,以及PUSCH资源与PRACH资源匹配方式。然后UE会根据网络广播信息或者具体的资源分配信息。
或者,如表11中的网络配置2中,网络侧仅仅广播需要所有需要支持MCS等级,网络侧和UE之间事先约定MCS等级与PUSCH之间的映射关系,映射关系如表12和表13所示。
表10:实施例4中网络配置1的广播信令包含的物理层信息
Figure PCTCN2021082277-appb-000013
(2)网络侧不用为每个MCS分配专属的MSGA上行发送资源,每个MSGA的上行发送资源可以支持所有在广播信令中包含的MCS编码等级。
UE可以根据自身信道条件和数据量选择相应的MCS编码等级并在选择 的MSGA的上行发送资源发送,网络根据广播的所有MCS编码调制等级进行盲检所发送的数据。
每个PUSCH资源支持所有MCS等级。增加MSG-A SINR threshold(MSGA信号与干扰加噪声比门限)用于指示在终端的SINR≥这个门限的时候,这个MCS index可以使用。如表11所示。
表11:实施例4中网络配置2的广播信令包含的物理层信息
Figure PCTCN2021082277-appb-000014
网络侧在一个周期内分配的MSGA物理层资源,包括总的PRACH资源(T PRACH)和总的PUSCH资源(T PUSCH),PRACH和PUSCH发送资源的对应关系可以如公式7所示,一个PUSCH至少可以对应一个PRACH资源。
N preamble=ceil(T preamble/T PUSCH)  (7)
T PUSCH=T PO x N DMRSperPO,T PO=nrofslotsMsgAPUSCH x nrofMsgAPOperSlot,N DMRSperPO从msgA-DMRS-Configuration获得。同时将N POperTBS=ceil(T PO/T MCSindex),N POperMCSindex为每个MCSindex包含的PUSCH发送资源数目,T MCSindex为MCS index总数;为了减少频域衰落信道的影响,MCS index与PUSCH匹配公式如下:第k个PUSCH发送资源对应的第j个TBS index
j MCSindex=mod(k PUSCHindex,T MCSindex)  (8)
当MCS index资源均匀分配时,实施中可以如下:PUSCH总发送资源15个,MCS index总数是5个,资源匹配如下表12所示。表中,表横轴代表时域,表纵轴代表频域。
表12:MCSindex与PUSCH发送资源mapping方式
Figure PCTCN2021082277-appb-000015
当TBS资源非均匀分配时,实施中可以如下:PUSCH总发送资源15个,MCS index总数是5个,其中MCSindex0数目为2,MCSindex1数目为2,MCSindex2数目为1,资源匹配如下表13所示。表中,表横轴代表时域,表纵轴代表频域。
表13:MCSindex与PUSCH发送资源mapping方式
Figure PCTCN2021082277-appb-000016
图15为实施例4中2-step RACH中MsgA的PRACH和PUSCH时频资源分配以及对应关系示意图,具体实施中,可以参考实施例1中的MSGA资源中的PRACH资源与PUSCH之间资源的映射实施方式。
(3)网络侧直接广播传输编码块TBS或者MCS索引序号和对应的MSGA上行发送资源(preamble资源+PUSCH上行发送资源),网络侧和UE不需要约定TBS索引序号或者MCS索引序号与MSGA上行发送资源的映射关系。UE根据网络配置找到相应的上行发送资源进行上行数据发送。
方式1:网络广播一组PRACHgroup资源和一组PUSCHgroup资源,对于PUSCHgroup资源包括多个MCSindex并且网络对于每个MCSindex都分 配了相应的PUSCH时频资源,每个MCSindex和相应的PUSCH时频资源对应一个数据块长度TBS。
基站发送广播信令,信令中包括:PUSCH发送资源(PUSCH发送时隙数(nrofslotsMsgAPUSCH)、每个时隙包含的PUSCH发送资源个数(nrofMsgAPOperSlot)、TBS索引(MSGA-TBSIndex)、编码调制等级(MSGA-MCS)、时域资源分配(起始码元及PUSCH长度指示symbol length indicator value SLIV(start and length indicator value))、在一个时隙内两个PUSCH发送资源的时域间隔(guard Period MsgA PUSCH)、在一个时隙内两个PUSCH发送资源的频域间隔(guard band MsgA PUSCH)、针对PUSCH发送资源的起始频域分配指示(频域起始位置指示(frequencystartMsgAPUSCH)和PRB个数(nrofPRBsperMsgAPO)、PUSCH发送资源的导频信号配置(msgA-DMRS-Configuration)、MSGA支持的MCS index总数(MSGA-MCS total)、枚举每个MCS index和相应分配的时频资源(1,2,…,total)(MSGA-MCS-i(1,2,…,total))。网络侧广播信息格式如表14所示。
表14:方式1中的广播信令包含的物理层信息
Figure PCTCN2021082277-appb-000017
Figure PCTCN2021082277-appb-000018
图16为实施例4中方式(3)之方式1中的PRACH和PUSCH时频资源分配以及对应关系示意图,具体实施中,可以参考实施例1中的MSGA资源中的PRACH资源与PUSCH之间资源的映射实施方式。
方式2:网络侧给MSGA分配了多组PRACH group资源和PUSCH group资源,它们是一一对应的,同时每个PUSCH group资源对应一个MCS和相应的PUSCH时频资源,每个PUSCH group资源对应一个数据传输块TBS长度。
基站发送广播信令,信令中包括:PUSCH发送资源(PUSCH发送时隙数(nrofslotsMsgAPUSCH)、每个时隙包含的PUSCH发送资源个数(nrofMsgAPOperSlot)、TBS索引(MSGA-TBSIndex),编码调制等级(MSGA-MCS)、时域资源分配(起始码元及PUSCH长度指示symbol length indicator value SLIV(start and length indicator value MsgA PO))、在一个时隙内两个PUSCH发送资源的时域间隔(guard Period MsgA PUSCH)、在一个时隙内两个PUSCH发送资源的频域间隔(guard band MsgA PUSCH)、针对PUSCH发送资源的起始频域分配指示(频域起始位置指示(frequencystartMsgAPUSCH)和PRB个数(nrofPRBsperMsgAPO)、PUSCH发送资源的导频信号配置(msgA-DMRS-Configuration),MSGA支持的MCS index总数(MSGA-MCS total)、枚举每个MCS index和相应分配的时频资源(1,2,…,total)(MSGA-MCS-i(1,2,…,total))。网络侧广播信息格式如表15所示。
表15:方式(3)中方式2中的广播信令包含的物理层信息
Figure PCTCN2021082277-appb-000019
Figure PCTCN2021082277-appb-000020
Figure PCTCN2021082277-appb-000021
Figure PCTCN2021082277-appb-000022
图17为实施例4中方式(3)方式2中的PRACH和PUSCH时频资源分配以及对应关系示意图,如图所示,MSGA资源中的PRACH资源与PUSCH资源之间的映射可以按如下方式实施:
MSGA资源中包括PRACH group与PUSCH group两组资源,这两组资源映射关系可以是:1个PRACH group资源可以对应多个PUSCH group;或者,1个PRACH group资源可以对应1个PUSCH group。
(1)PRACH group与PUSCH group资源一对一映射,1个PRACH group中的1个preamble资源(preamble码和RACH发送的资源)可以对应多个PUSCH group中的每个PUSCH group中的1个PUSCH资源。
如图7和图8所示,图中的PRACH group与PUSCH group资源是一对一映射,网络可以配置多组PRACH group与PUSCH group资源,每组PRACH group与每组PUSCH group都是一一对应,同时每组PUSCH group的MCS是可配置的,具体到每个PRACH资源和PUSCH资源都可以配置成一一对应,也可以一个PRACH group中的多个PRACH资源对应一个PUSCH group中的一个PUSCH资源。
对应图9所示,网络页可以配置多组PRACH group与PUSCH group资源,有些PUSCHgroup资源有对应的PRACH group,有些PUSCH group资源没有对应的PRACH group,因为PRACH group这些资源是给固定终端使用。
(2)PRACH group与PUSCH group资源一对多映射,1个PRACH group资源按照PUSCH group总数分成若干PRACH资源小组,每个资源小组对应一个PUSCH group资源。
图11和图12所示一组PRACH group与两组/多组的映射关系示意图。如图所示,PRACH group对应PUSCH group,PRACH group资源小组对应PUSCH资源,group对应group,资源对应资源。
如图11所示,一个PRACH group可以对应二个或者多个PUSCHgroup,一个PRACH group的一个PRACH资源小组可以分别对应两个或者多个PUSCH group里面的一个PUSCH资源,终端可以在一个或者多个PUSCH资源上发送数据,基站可以通过盲解的方式来确定是否两个或者多个PUSCH资源上有数据传输。
如图12所示,一个PRACH group可以对应二个或者多个PUSCHgroup,PRACH group的一部分资源对应第一个PUSCH group里面的PUSCH资源,PRACH group另外一部分资源对应第二个PUSCHgroup里面的PUSCH资源。图11中,表示每个PRACH资源可以分别对应不同PUSCH group的PUSCH资源,网络侧通过盲解所有可能的PUSCH发送资源来找到终端发送的 PUSCH资源。如果两个UE发送的相同的PRACH+两个不同PUSCH,网络侧成功解调两个PUSCH数据,那么网络发送success RAR,如果不携带定时提前发送信息TA,两个UE知道网络成功收到PUSCH承载的上行数据但是PRACH有冲突,所以两个UE会再次只发送PRACH以获得TA。如果网络发送success RAR携带TA,两个UE都使用这个TA进行数据发送,如果数据发送失败,需要再重新开始2-step RACH。
图12中,每个PRACH资源只对应唯一的PUSCH资源。
在MSGA资源与TBS index/MCS index进行映射时,至少可以有如下三种方式,下面对它们的实施进行说明。
方式1:
本方式是一种隐含指示的TBS index/MCS index与MSGA上行发送资源映射关系的方式,映射关系需要UE和网络侧预先确定。
首先,网络侧和UE都需要给MSGA中的上行发送资源排序(包括preamble资源分配和PUSCH资源分配),例如,如果总的资源是N,则需要给每个资源编号(0,1,…,N-1),将每个资源编号与TBS/MCS序号建立映射关系。
方式2:
本方式是一种隐含指示的TBS index/MCS index与MSGA上行发送资源映射关系的方式,映射关系需要UE和网络侧预先确定。
网络侧广播的多个MCS index可以在MSGA中的任意上行发送资源发送。网络不需要为每个MCS分配专属的MSGA中的上行发送资源。网络侧需要在上行发送资源上盲解编码调制方式。
方式3:
本方式,是在广播信令中直接携带每个TBS index/MCS index对应的MSGA的上行发送资源。
下面对MSGA资源中Preamble资源与PUSCH资源映射实施方式进行说明。
在MSGA资源中包括PRACH group与PUSCH group两组资源,这两组资源映射关系可以是:PRACH group对应PUSCH group,PRACH资源小组对应PUSCH资源。
(1)1个PRACH group中的1个preamble资源(preamble码和RACH发送的资源)可以对应多个PUSCH group中的每个PUSCH group中的1个PUSCH资源。
(2)1个PRACH group资源按照PUSCH group总数分成若干PRACH资源小组,每个资源小组对应一个PUSCH group资源。1个PRACH group资源可以对应1个PUSCH group就是如果有几个PRACH group资源网络就会配置相应数目的PUSCH group资源。
实施例9
网络侧在一个周期内分配的MSGA物理层资源,包括总的PRACH资源 (T PRACH)和总的PUSCH资源(T PUSCH),PRACH和PUSCH发送资源的对应关系可以如公式9所示,一个PUSCH至少可以对应一个PRACH资源。
N preamble=ceil(T preamble/αT PUSCH)  (9)
T PUSCH=T PO*N DMRSperPO,T PO=nrofslotsMsgAPUSCH*nrofMsgAPOperSlot,N DMRSperPO从msgA-DMRS-Configuration获得。α是表示在一个周期内TPO里面的PUSCH资源聚合等级并且可以取值为α≤1,例如,可以取值1、1/2、1/4、1/6、1/8、1/16,容易理解,当取值为1时,公式(9)就为公式(7),如果α<1,表示有多个PUSCH发送资源捆绑为一个PUSCH发送资源发送组,这一组资源对应PRACHgroup中一个或者多个PRACH资源小组。
图23为α=1/2时的资源分配示意图1,图24为α=1/4时的资源分配示意图,图25为α=1/2时的资源分配示意图2,如图所示:
图23中,当α=1/2,一个PRACH group对应一个PUSCH group,在PUSCH group里面,2个PUSCH发送机会组成1个PUSCH发送机会资源小组,每个PUSCH小组对应一个或者多个PRACH资源小组,每个PUSCH发送机会资源小组对应N DMRSperPOsubgroupDMRS index。
图24中,当α=1/4,一个PRACH group对应一个PUSCH group,在PUSCH Proup里面,4个PUSCH发送机会组成1个PUSCH发送机会资源小组,每个PUSCH小组对应2个/多个PRACH资源小组,每个PUSCH发送机会资源小组对应N DMRSperPOsubgroupDMRS index。
图25中,当α=1/2,一个PRACH group对应两个/多个PUSCH group,在一个PUSCH group里面,2个PUSCH发送机会组成1个PUSCH发送机会资源小组,每个PUSCH小组对应一个或者多个PRACH资源小组,每个PUSCH发送机会资源小组对应N DMRSperPOsubgroupDMRS index,一个PRACH资源小组可以分别对应两个PUSCH group里面的各1个PUSCH发送机会资源小组,gNB通过盲解两个PUSCH group的资源即可知道是否UE会在两个PUSCHgroup都发送了数据。
二、终端侧的实施说明。
终端侧发送MSGA的主要步骤如下:
1、UE获取网络侧的多套MSGA配置;
2、UE基于特定的规则选择一套MSGA配置,例如根据RSRP、SINR、发送数据的大小等进行选择;
3、UE按照选择的配置进行MSGA发送;
4、如果终端有比较大的数据传输,但是其信道条件只能选择比较低的调制编码等级(MCS level)时,终端可以将其数据分块,在MsgA中的PUSCH传输一部分,并在MAC中指示还有后续数据,网络侧在MSGB的success RAR中分配UL grant(上行调度信息),UE可以在连接态将数据传完后再回到非连接态。
下面对终端侧的具体处理实施方式进行说明。
实施例5:
UE在接收到广播信令中包含的TBS/MCS的具体信息和数量,以及MSGA中preamble资源分配和PUSCH资源分配后,就会知道目前网络配置的MSGA的上行发送资源的具体位置和总数,以及网络目前指示的TBS/MCS的具体信息和数量。
UE会根据与网络预先约定的每个资源编号与TBS/MCS序号建立映射关系,计算出MSGA每个上行发送资源可以承载多少信息比特,然后UE确定上行发送资源(根据自身业务需要计算自己要发送的比特数目与每个资源所承载的比特数相比较,找到≥自身发送比特数且最接近自身需要发送的比特数对应的发送资源)。
实施中可以考虑两点:如果网络广播的固定的MCS等级,则仅仅需要考虑TBS大小;如果网络广播是多个MCS等级序号,UE需要先根据RSRP、SINR来选定在广播信令中能够匹配的MCS等级,然后在找到对应MCS等级的MSGA的上行发送资源,来确定每个资源承载的数据比特,与自身的实际发送比特相比较,最终找到合适上行发送资源。如果必要,添加填充比特,然后根据资源块对应的MCS等级进行调制编码在选好的资源快上发送数据。
图18为实施例5终端侧的基于MCS level的PRACH和PUSCH资源选择流程示意图,如图18所示。从终端角度上,主要包含如下步骤:
步骤1801、非连接态的UE有数据需要发送。
步骤1802、UE判断RSRP是否大于RSRP threshold,是则进入步骤1804,否则进入步骤1803。
如果在非连接态,例如Idle(空闲态)或者Inactive(非激活态)的UE,UE有上行数据发送并且用自身的RSRP和RSRP threshold进行比较,如果大于门限就采用2-stepRACH,如果小于门限就采用4-step RACH。
步骤1803、进入4-step RACH流程。
步骤1804、进入2-step RACH流程。
如果UE选择了2-stepRACH流程,就会读取网络广播的2-stepRACH的MSGA中的PRACH和PUSCH配置信息。
步骤1805、根据网络广播信令/根据网络广播信令+事先约定的PRACH和PUSCH资源分配确定PUSCH资源大小和位置,以及每个PUSCH支持的MCS和对应的PRACH资源。
步骤1806A、如果每个PUSCH对应一个MCS并且不同的MCS对应不同PUSCH,每个PUSCH的大小不同,UE根据上行数据的大小、SINR,来选择匹配的PUSCH资源和MCS等级。
步骤1806B、如果每个PUSCH对应多个MCS,UE根据上行数据的大小、SINR,来选择匹配的MCS等级并且根据信道条件选择PUSCH资源。
步骤1806C、如果每个PUSCH对应一个MCS并且不同的MCS对应不同PUSCH同时PUSCH资源大小相同,UE根据上行数据的大小、SINR,来选择匹配的PUSCH资源和MCS等级。
步骤1806D、所有PUSCH资源对应一个固定的MCS,每个PUSCH对应一个MCS并且每个PUSCH的大小不同,UE根据上行数据的大小来选择匹配的PUSCH资源。
步骤1807、UE获取与PUSCH对应PRACH资源,如果有多个PRACH资源,UE可以随机选择。
步骤1808、判断是否选择到一个资源和MCS,如果没有转入步骤1809执行4-step RACH,是则转入步骤1810。
步骤1809、进入4-step RACH流程。
步骤1810、如果选择到一个MCS,UE对数据和PRACH进行编码调制和资源映射并在相应的时频资源上发送给网络。
实施例6:
UE在接收到广播信令中包含的TBS/MCS的索引序号和数量,以及针对UE在接收到广播信令中包含的TBS/MCS的索引序号分配的MSGA上行发送资源(preamble资源分配+PUSCH资源分配),UE就会知道目前网络配置的TBS/MCS的具体信息和数量,以及每个TBS/MCS索引对应的MSGA上行发送资源的位置和数量。
据此,UE可以计算出MSGA中的每个上行发送资源可以承载多少信息比特,然后UE确定上行发送资源(根据自身业务需要计算自己要发送的比特数目与每个资源所承载的比特数相比较,找到≥自身发送比特数且最接近自身需要发送的比特数对应的发送资源)。
实施中可以考虑两点:如果网络广播的固定的MCS等级,则仅仅需要考虑TBS大小(当然也要考虑是目前的RSRP和SINR能否使用MSGA的资源,如果UE不能使用MSGA上行发送资源,需要选择正常的接入方式,接入网络后再进行发送);如果网络广播是多个MCS等级序号,UE需要先根据RSRP、SINR来选定在广播信令中能够匹配的MCS等级,然后在找到对应MCS等级的MSGA的上行发送资源,来确定每个资源承载的数据比特,与自身的实际发送比特相比较,最终找到合适上行发送资源。如果必要,添加填充比特,然后根据资源块对应的MCS等级进行调制编码在选好的资源快上发送数据。
对于终端侧的基于MCS level的PRACH和PUSCH资源选择流程的实施,可以参见实施例5中图17的实施及说明。
实施例7:
网络侧给MSGA分配了多组PRACH group资源和PUSCH group资源,它们是一一对应的,同时每个PUSCH group资源对应一个MCS和相应的PUSCH时频资源,每个PUSCH group资源对应一个数据传输块TBS长度。
图19为实施例7终端侧的基于MCS level的PRACH和PUSCH资源选择流程示意图,如图19所示,从终端角度上,主要包含如下步骤:
步骤1901、非连接态的UE有数据需要发送。
步骤1902、UE判断RSRP是否大于RSRP threshold,是则进入步骤1904,否则进入步骤1903。
如果在非连接态,例如Idle(空闲态)或者Inactive(非激活态)的UE,UE有上行数据发送并且用自身的RSRP和RSRP threshold进行比较,如果大于门限就采用2-stepRACH,如果小于门限就采用4-step RACH。
步骤1903、进入4-step RACH流程。
步骤1904、进入2-step RACH流程。
如果UE选择了2-stepRACH流程,就会读取网络广播的2-stepRACH的MSGA中的PRACH和PUSCH配置信息。
步骤1905、根据网络广播信令读取网络广播的2-step RACH的MSGA中的PRACH和PUSCH配置信息。
步骤1906、UE根据自身数据大小选择PRACH资源和对应的PUSCH资源。
步骤1907、UE判断SINR是否大于MCS对应的SINR门限,如果小于转入步骤1908执行4-step RACH,是则转入步骤1909。
UE判断SINR是否大于MCS对应的SINR门限,如果没有执行4-step RACH。
步骤1908、进入4-step RACH流程。
步骤1909、UE对数据和PRACH进行编码调制和资源映射并在相应的时频资源上发送给网络。
实施例8:
网络侧可以配置多组PRACH group与PUSCH group资源,有些PUSCH group资源有对应的PRACH group,有些PUSCH group资源没有对应的PRACH group,因为这些资源是给固定终端使用有效的时间提前量TA的。
图20为实施例8终端侧的基于MCS level的PRACH和PUSCH资源选择流程示意图,如图20所示,从终端角度上,主要包含如下步骤:
步骤2001、非连接态的UE有数据需要发送。
步骤2002、UE判断RSRP是否大于RSRP threshold,是则进入步骤2004,否则进入步骤2003。
如果在非连接态,UE有上行数据发送并且用自身的RSRP和RSRP threshold进行比较,如果大于门限就采用2-stepRACH,如果小于门限就采用4-step RACH。
步骤2003、进入4-step RACH流程。
步骤2004、进入2-step RACH流程。
步骤2005、判断UE是否有TA valid,是则转入步骤2006,否则转入步骤2011。
如果UE选择了2-step RACH流程,判断是否有TA valid(有效TA),如果有TA valid,仅仅发送数据;如果TA没有valid,UE需要发送PRACH+PUSCH。
如果有TA valid,读取网络广播的2-stepRACH的MSGA中的PUSCH配置信息。UE判断SINR是否大于MCS对应的SINR门限,如果没有执行4-step  RACH。如果UE SINR大于MCS对应的SINR门限,UE对数据进行编码调制和资源映射并在相应的时频资源上发送给网络。
如果没有TA valid,则读取网络广播的2-stepRACH的MSGA中的PRACH和PUSCH配置信息。UE根据自身数据大小选择PRACH资源和对应的PUSCH资源。UE判断SINR是否大于MCS对应的SINR门限,如果没有执行4-step RACH。如果UE SINR大于MCS对应的SINR门限,UE对数据和PRACH进行编码调制和资源映射并在相应的时频资源上发送给网络。
步骤2006、根据网络广播信令读取网络广播的2-step RACH的MSGA中的PUSCH配置信息。
步骤2007、UE根据自身数据大小选择对应的PUSCH资源。
步骤2008、UE判断SINR是否大于MCS对应的SINR门限,如果小于转入步骤2009执行4-step RACH,是则转入步骤2010。
步骤2009、进入4-step RACH流程。
步骤2010、UE对数据进行编码调制和资源映射并在相应的时频资源上发送给网络。
步骤2011、根据网络广播信令读取网络广播的2-step RACH的MSGA中的PRACH和PUSCH配置信息。
步骤2012、UE根据自身数据大小选择PRACH资源和对应的PUSCH资源。
步骤2013、UE判断SINR是否大于MCS对应的SINR门限,如果小于转入步骤2014执行4-step RACH,是则转入步骤2015。
步骤2014、进入4-step RACH流程。
步骤2015、UE对数据和PRACH进行编码调制和资源映射并在相应的时频资源上发送给网络。
基于同一发明构思,本公开的一些实施例中还提供了一种基站、用户设备、网络侧上的随机接入装置、终端侧上的随机接入装置及计算机可读存储介质,由于这些设备解决问题的原理与随机接入方法相似,因此这些设备的实施可以参见方法的实施,重复之处不再赘述。
在实施本公开的一些实施例提供的技术方案时,可以按如下方式实施。
图21为基站结构示意图,如图所示,基站中包括:
处理器2100,用于读取存储器2120中的程序,执行下列过程:
接收终端发送的MSGA,其中,发送MSGA的上行发送资源是网络侧配置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同,终端根据发送的上行数据块大小选择其中一个上行发送资源来发送MSGA;
向终端发送MSGB;
收发机2110,用于在处理器2100的控制下接收和发送数据。
实施中,配置上行发送资源包括:配置PRACH资源和PUSCH资源,以及PRACH资源与PUSCH资源之间的映射关系;
进一步包括:
针对每种上行数据块的大小分配一个或者多个MCS或TBS,以及每个MCS或TBS对应的上行发送资源的时频资源。
实施中,按如下公式建立PRACH资源与PUSCH资源之间的映射关系:
N preamble=ceil(T preamble/αT PUSCH)
其中,ceil为返回大于或者等于指定表达式的最小整数函数,T PUSCH=T PO*N DMRSperPO,T PO=nrofslotsMsgAPUSCH*nrofMsgAPOperSlot,N DMRSperPO从msgA-DMRS-Configuration获得,将N POperTBS=ceil(T PO/T TBS或T MCS),N POperTBS为每个TBS对应的PUSCH发送资源数目,T TBS为TBS index总数,T MCS为MCS index总数,其中,各参数含义如下:
N preamble:在一个周期内,与每个PUSCH资源对应的Preamble index数目或者PRACH资源个数;
T preamble:在一个周期内,Preamble index总数或者PRACH资源总数;
T PUSCH:在一个周期内,PUSCH资源总数;
T PO:在一个周期内,PUSCH发送的机会总数;
nrofslotsMsgAPUSCH:在一个周期内,所有可以承载PUSCH发送的总的时隙数;
nrofMsgAPOperSlot:每个slot里面的PUSCH发送时隙的个数;
N DMRSperPO:每个PUSCH发送时隙所带有的DMRS的个数;
α:在一个周期内TPO里面的PUSCH资源聚合等级,取值为α≤1。
实施中,TBS索引序号或者MCS索引序号与上行发送资源的分配关系为:
对PUSCH资源排序,在频域上PUSCH occasion(时机)由低到高排序,在时域上按照PUSCH slot index(PUSCH时隙索引)由低到高;
为多个MCS或TBS分配一个或者多个PUSCH occasion,其中,将N POperTBS=ceil(T PO/T TBS),TBS index或MCS index与PUSCH匹配公式为:第k个PUSCH发送资源对应的第j个TBS index或MCS index:
jTBSindex或jMCSindex=mod(kPUSCHindex,T TBS或T MCS);或,
由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配N POperTBS
或者,
由高层信令指定MCS index或TBS index对应的PUSCH occasion的数目,并由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配分别为N 1,N 2,N 3…N n,N 1+N 2+N 3+…+N n=T PO
其中,N POperTBS为每个TBS或MCS对应的PUSCH发送资源数目;T TBS为TBS index总数;T PO为在一个周期内,PUSCH发送的机会总数;T MCS为MCS index总数。
实施中,按如下方式之一或者其组合进行配置:
配置上行发送资源,以及不同的TBS索引序号或者MCS索引序号,其 中,网络侧和UE预先约定TBS索引序号或者MCS索引序号与上行发送资源的映射关系;或,
配置多个可以在MSGA中的任意上行发送资源发送的MCS index,以及不同的TBS索引序号或者MCS索引序号,其中,网络不为每个TBS或MCS分配专属的MSGA中的上行发送资源,网络侧在上行发送资源上盲解编码调制方式;或,
配置上行发送资源,以及上行发送资源与TBS索引序号或者MCS索引序号的映射关系,其中,通过广播通知UE所述上行发送资源与TBS索引序号或者MCS索引序号的映射关系。
实施中,按如下方式之一或者其组合指示UE TBS索引或者MCS索引与上行发送资源的映射关系:
将上行发送资源编号,预设TBS索引或者MCS索引与上行发送资源编号的映射关系,通过上行发送资源编号指示所述映射关系;或,
预设广播指示的TBS索引或者MCS索引能在任一上行发送资源上发送,通过广播指示TBS索引或者MCS索引;或,
通过广播指示TBS索引或者MCS索引以及对应的上行发送资源。
实施中,在所述PRACH资源与PUSCH资源之间的映射关系中,PRACH资源按组分配,PUSCH资源按组分配,其中:
一组PRACH资源对应至少两组PUSCH资源;或,
一组PRACH资源对应一组PUSCH资源。
实施中,在一组PRACH资源对应至少两组PUSCH资源时,一组PRACH资源中的每个PRACH资源对应每组PUSCH资源中的一个PUSCH资源;或者,
一组PRACH资源分为若干小组的PRACH资源,每小组PRACH资源对应一组PUSCH资源。
其中,在图21中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器2100代表的一个或多个处理器和存储器2120代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机2110可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元。处理器2100负责管理总线架构和通常的处理,存储器2120可以存储处理器2100在执行操作时所使用的数据。
本公开的一些实施例中提供了一种随机接入装置,包括:
网络侧接收模块,用于接收终端发送的MSGA,其中,发送MSGA的上行发送资源是网络侧配置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同,终端根据发送的上行数据块大小选择其中一个上行发送资源来发送MSGA;
网络侧发送模块,用于向终端发送MSGB。
具体可以参见网络侧的随机接入方法的具体实施。
为了描述的方便,以上所述装置的各部分以功能分为各种模块或单元分别描述。当然,在实施本公开时可以把各模块或单元的功能在同一个或多个软件或硬件中实现。
图22为UE结构示意图,如图所示,用户设备包括:
处理器2200,用于读取存储器2220中的程序,执行下列过程:
获取发送MSGA的上行发送资源,其中,发送MSGA的上行发送资源是网络侧配置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同;
根据发送的上行数据块大小选择其中一个上行发送资源;
在选择的上行发送资源上向网络侧发送MSGA;
收发机2210,用于在处理器2200的控制下接收和发送数据。
实施中,网络侧配置上行发送资源包括:配置PRACH资源和PUSCH资源,以及PRACH资源与PUSCH资源之间的映射关系;
进一步包括:
网络侧针对每种上行数据块的大小分配一个或者多个MCS或TBS,以及每个MCS或TBS对应的上行发送资源的时频资源。
实施中,按如下公式确定PRACH资源与PUSCH资源之间的映射关系:
N preamble=ceil(T preamble/αT PUSCH)
其中,ceil为返回大于或者等于指定表达式的最小整数函数,T PUSCH=T PO*N DMRSperPO,T PO=nrofslotsMsgAPUSCH*nrofMsgAPOperSlot,N DMRSperPO从msgA-DMRS-Configuration获得,将N POperTBS=ceil(T PO/T TBS或T MCS),N POperTBS为每个TBS对应的PUSCH发送资源数目,T TBS为TBS index总数,T MCS为MCS index总数,其中,各参数含义如下:
N preamble:在一个周期内,与每个PUSCH资源对应的Preamble index数目或者PRACH资源个数;
T preamble:在一个周期内,Preamble index总数或者PRACH资源总数;
T PUSCH:在一个周期内,PUSCH资源总数;
T PO:在一个周期内,PUSCH发送的机会总数;
nrofslotsMsgAPUSCH:在一个周期内,所有可以承载PUSCH发送的总的时隙数;
nrofMsgAPOperSlot:每个slot里面的PUSCH发送时隙的个数;
N DMRSperPO:每个PUSCH发送时隙所带有的DMRS的个数;
α:在一个周期内TPO里面的PUSCH资源聚合等级,取值为α≤1。
实施中,TBS索引序号或者MCS索引序号与上行发送资源的分配关系为:
对PUSCH资源排序,在频域上PUSCH occasion由低到高排序,在时域上按照PUSCH slot index由低到高;
为多个MCS或TBS分配一个或者多个PUSCH occasion,其中,将N POperTBS=ceil(T PO/T TBS),TBS index或MCS index与PUSCH匹配公式为: 第k个PUSCH发送资源对应的第j个TBS index或MCS index:
jTBSindex或jMCSindex=mod(kPUSCHindex,T TBS或T MCS);或,
由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配N POperTBS
或者,
由高层信令指定MCS index或TBS index对应的PUSCH occasion的数目,并由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配分别为N 1,N 2,N 3…N n,N 1+N 2+N 3+…+N n=T PO
其中,N POperTBS为每个TBS或MCS对应的PUSCH发送资源数目;T TBS为TBS index总数;T PO为在一个周期内,PUSCH发送的机会总数;T MCS为MCS index总数。
实施中,按如下方式之一或者其组合确定网络侧的配置:
根据与网络侧预先约定TBS索引序号或者MCS索引序号与上行发送资源的映射关系,确定网络侧配置的上行发送资源,以及TBS或者MCS;或,
按MCS index,以及不同TBS索引序号或者MCS索引序号与上行发送资源对应关系,和,确定在网络侧配置的MSGA中的任意上行发送资源上发送MSGA;或,
根据网络侧广播通知的上行发送资源与TBS索引序号或者MCS索引序号的映射关系确定网络侧配置的上行发送资源,以及TBS或者MCS。
实施中,确定网络侧配置的上行发送资源,以及TBS或者MCS,包括:
从接收到广播信令中确定出TBS或MCS,以及MSGA中PRACH资源和PUSCH资源;
根据映射关系确定出MSGA中每个上行发送资源可以承载的信息比特量;
根据需发送的上行数据块大小选择其中一个上行发送资源以及确定对应的TBS或MCS。
实施中,确定网络侧配置的上行发送资源,以及TBS或者MCS,包括:
从接收到广播信令中确定出TBS索引序号或MCS索引序号,以及针对该TBS索引序号或MCS索引序号在MSGA中分配的PRACH资源和PUSCH资源;
确定出每个TBS索引序号或MCS索引序号对应的MSGA中每个上行发送资源可以承载的信息比特量;
根据需发送的上行数据块大小选择其中一个上行发送资源以及确定对应的TBS或MCS。
实施中,确定对应的TBS或MCS,包括:
若广播信令中的MCS是固定的MCS等级,确定相应的TBS;
若广播信令中的MCS是多个MCS等级,根据RSRP和/或SINR选定能够匹配的一个或者多个MCS等级,针对多个匹配的MCS等级,选择MCS最低等级作为最终发送的MCS等级。
实施中,当一个MCS等级有多个上行发送资源可选时,从中随机选择出一个上行发送资源,或,按上行发送资源的时频资源时序选择出一个上行发送资源。
实施中,根据网络侧按如下方式之一或者其组合的指示确定TBS索引或者MCS索引与上行发送资源的映射关系:
确定上行发送资源编号,通过上行发送资源编号确定所述映射关系,其中,TBS索引或者MCS索引与上行发送资源编号的映射关系是预设的;或,
根据广播指示的TBS索引或者MCS索引确定该TBS索引或者MCS索引能在任一上行发送资源上发送,其中,广播指示的TBS索引或者MCS索引能在任一上行发送资源上发送是预设的;或,
根据广播指示确定TBS索引或者MCS索引以及对应的上行发送资源。
实施中,在所述PRACH资源与PUSCH资源之间的映射关系中,PRACH资源按组分配,PUSCH资源按组分配,其中:
一组PRACH资源对应至少两组PUSCH资源;或,
一组PRACH资源对应一组PUSCH资源。
实施中,在一组PRACH资源对应至少两组PUSCH资源时,一组PRACH资源中的每个PRACH资源对应每组PUSCH资源中的一个PUSCH资源;或者,
一组PRACH资源分为若干小组的PRACH资源,每小组PRACH资源对应一组PUSCH资源。
其中,在图22中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器2200代表的一个或多个处理器和存储器2220代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机2210可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备,用户接口2230还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器2200负责管理总线架构和通常的处理,存储器2220可以存储处理器2200在执行操作时所使用的数据。
本公开的一些实施例中提供了一种随机接入装置,包括:
终端侧获取模块,用于获取发送MSGA的上行发送资源,其中,发送MSGA的上行发送资源是网络侧配置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同;
终端侧选择模块,用于根据发送的上行数据块大小选择其中一个上行发送资源;
终端侧发送模块,用于在选择的上行发送资源上向网络侧发送MSGA。
具体可以参见终端侧的随机接入方法的具体实施。
为了描述的方便,以上所述装置的各部分以功能分为各种模块或单元分 别描述。当然,在实施本公开时可以把各模块或单元的功能在同一个或多个软件或硬件中实现。
本公开的一些实施例中提供了一种计算机可读存储介质,所述计算机可读存储介质存储有执行上述随机接入方法的程序。
具体可以参见网络侧和/或终端侧的随机接入方法的具体实施。
综上所述,在本公开的一些实施例中提供的技术方案中,网络针对2-step RACH过程中的MSGA能够支持多种(包括大于2种以上)的上行数据块大小(从几十比特到上千比特)同时传输,通过网络配置或者物理层映射,将不同的数据块会分配到一个或者多个MCS和对应的时频资源,同时网络也配置了MSGA中的PRACH资源与PUSCH资源映射关系,或者网络和终端预定约定的映射关系;而终端可以根据网络配置计算MSGA的每个上行发送资源的承载能力与自身的实际发送数据相比较,找到合适的MSGA上行发送资源将上行数据发送出去。
具体的,从网络侧角度上,包括:
网络配置多个MSGA上行发送资源来支持大于2种以上的上行数据块大小(从几十比特到上千比特)同时传输;
上行发送资源包括PRACH资源和PUSCH资源,网络配置了PRACH资源和PUSCH资源以及映射关系。同时针对多种上行数据块大小(大于2种以上)分配了一个或者多个MCS和对应的时频资源;
网络接收来自终端的MSGA;
网络发送MSGB给终端。
从终端角度上,包括:
UE获取网络侧的多套MSGA配置;
UE基于预设的规则选择一套MSG A配置;
UE按照选择的配置进行MSG A发送。
进一步的,还具体提供了网络侧的资源配置方案;
UE针对网络资源配置方案的实施方案;
MSGA资源与TBS index/MCS index的映射实施方案;
以及MSGA资源中Preamble资源与PUSCH资源映射实施方案。
通过本方案,网络可以在随机接入过程中实现支持多种传输块同时进行传输;在非连接状态的终端可以根据自身数据业务所需传输的数据块大小以及信道条件,灵活的选择MSGA中上行发送资源来发送数据。
本方案为网络侧随机接入资源的分配提供了更多的灵活性,同时提升了非连接态终端的网络资源利用效率,同时支持非连接态终端的多种不同数据块大小传输(从几十比特到上千比特),满足了终端不同业务的需求。
本领域内的技术人员应明白,本公开的实施例可提供为方法、系统、或计算机程序产品。因此,本公开可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本公开可采用在一个或多个 其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
各个模块、单元、子单元或子模块可以是被配置成实施以上方法的一个或多个集成电路,例如:一个或多个特定集成电路(Application Specific Integrated Circuit,ASIC),或,一个或多个微处理器(digital signal processor,DSP),或,一个或者多个现场可编程门阵列(Field Programmable Gate Array,FPGA)等。再如,当以上某个模块通过处理元件调度程序代码的形式实现时,该处理元件可以是通用处理器,例如中央处理器(Central Processing Unit,CPU)或其它可以调用程序代码的处理器。再如,这些模块可以集成在一起,以片上系统(system-on-a-chip,SOC)的形式实现。
本公开是参照根据本公开实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然,本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样,倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内,则本公开也意图包含这些改动和变型在内。

Claims (43)

  1. 一种随机接入方法,包括:
    网络侧接收终端发送的消息AMSGA,其中,发送MSGA的上行发送资源是网络侧配置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同,终端根据发送的上行数据块大小选择其中一个上行发送资源来发送MSGA;
    网络侧向终端发送消息BMSGB。
  2. 如权利要求1所述的方法,其中,网络侧配置上行发送资源包括:配置物理随机接入信道PRACH资源和物理上行共享信道PUSCH资源,以及PRACH资源与PUSCH资源之间的映射关系;
    网络侧配置上行发送资源进一步包括:
    针对每种上行数据块的大小分配一个或者多个调制和编码方案MCS或传输块大小TBS,以及每个MCS或TBS对应的上行发送资源的时频资源。
  3. 如权利要求2所述的方法,其中,按如下公式建立PRACH资源与PUSCH资源之间的映射关系:
    N preamble=ceil(T preamble/αT PUSCH)
    其中,ceil为返回大于或者等于指定表达式的最小整数函数,T PUSCH=T PO*N DMRSperPO,T PO=nrofslotsMsgAPUSCH*nrofMsgAPOperSlot,N DMRSperPO从msgA-DMRS-Configuration获得,将N POperTBS=ceil(T PO/T TBS或T MCS),N POperTBS为每个TBS对应的PUSCH发送资源数目,T TBS为TBS index总数,T MCS为MCS index总数,其中,各参数含义如下:
    N preamble:在一个周期内,与每个PUSCH资源对应的随机接入前导码索引Preamble index数目或者PRACH资源个数;
    T preamble:在一个周期内,Preamble index总数或者PRACH资源总数;
    T PUSCH:在一个周期内,PUSCH资源总数;
    T PO:在一个周期内,PUSCH发送的机会总数;
    nrofslotsMsgAPUSCH:在一个周期内,所有可以承载PUSCH发送的总的时隙数;
    nrofMsgAPOperSlot:每个时隙slot里面的PUSCH发送时隙的个数;
    N DMRSperPO:每个PUSCH发送时隙所带有的解调参考信号DMRS的个数;
    α:在一个周期内T PO里面的PUSCH资源聚合等级,取值为α≤1。
  4. 如权利要求2所述的方法,其中,TBS索引序号或者MCS索引序号与上行发送资源的分配关系为:
    对PUSCH资源排序,在频域上PUSCH时机PUSCH occasion由低到高排序,在时域上按照PUSCH时隙索引PUSCH slot index由低到高;
    为多个MCS或TBS分配一个或者多个PUSCH occasion,其中,将N POperTBS=ceil(T PO/T TBS),TBS索引TBS index或MCS索引MCS index与 PUSCH匹配公式为:第k个PUSCH发送资源对应的第j个TBS index或MCS index:
    jTBSindex或jMCSindex=mod(kPUSCHindex,T TBS或T MCS);或,
    由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配N POperTBS
    或者,
    由高层信令指定MCS index或TBS index对应的PUSCH occasion的数目,并由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配分别为N 1,N 2,N 3…N n,N 1+N 2+N 3+…+N n=T PO
    其中,N POperTBS为每个TBS或MCS对应的PUSCH发送资源数目;T TBS为TBS index总数;T PO为在一个周期内,PUSCH发送的机会总数;T MCS为MCS index总数。
  5. 如权利要求2所述的方法,其中,网络侧按如下方式之一或者其组合进行配置:
    网络侧配置上行发送资源,以及不同的TBS索引序号或者MCS索引序号,其中,网络侧和用户设备UE预先约定TBS索引序号或者MCS索引序号与上行发送资源的映射关系;或,
    网络侧配置多个可以在MSGA中的任意上行发送资源发送的MCS index,以及不同的TBS索引序号或者MCS索引序号,其中,网络不为每个TBS或MCS分配专属的MSGA中的上行发送资源,网络侧在上行发送资源上盲解编码调制方式;或,
    网络侧配置上行发送资源,以及上行发送资源与TBS索引序号或者MCS索引序号的映射关系,其中,网络侧通过广播通知UE所述上行发送资源与TBS索引序号或者MCS索引序号的映射关系。
  6. 如权利要求2所述的方法,其中,网络侧按如下方式之一或者其组合指示UE TBS索引或者MCS索引与上行发送资源的映射关系:
    将上行发送资源编号,预设TBS索引或者MCS索引与上行发送资源编号的映射关系,通过上行发送资源编号指示所述映射关系;或,
    预设广播指示的TBS索引或者MCS索引能在任一上行发送资源上发送,通过广播指示TBS索引或者MCS索引;或,
    通过广播指示TBS索引或者MCS索引以及对应的上行发送资源。
  7. 如权利要求2所述的方法,其中,在所述PRACH资源与PUSCH资源之间的映射关系中,PRACH资源按组分配,PUSCH资源按组分配,其中:
    一组PRACH资源对应至少两组PUSCH资源;或,
    一组PRACH资源对应一组PUSCH资源。
  8. 如权利要求7所述的方法,其中,在一组PRACH资源对应至少两组PUSCH资源时,一组PRACH资源中的每个PRACH资源对应每组PUSCH资源中的一个PUSCH资源;或者,
    一组PRACH资源分为若干小组的PRACH资源,每小组PRACH资源对应一组PUSCH资源。
  9. 一种随机接入方法,包括:
    终端侧获取发送MSGA的上行发送资源,其中,发送MSGA的上行发送资源是网络侧配置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同;
    终端根据发送的上行数据块大小选择其中一个上行发送资源;
    终端在选择的上行发送资源上向网络侧发送MSGA。
  10. 如权利要求9所述的方法,其中,网络侧配置上行发送资源包括:配置PRACH资源和PUSCH资源,以及PRACH资源与PUSCH资源之间的映射关系;
    网络侧配置上行发送资源进一步包括:
    网络侧针对每种上行数据块的大小分配一个或者多个MCS或TBS,以及每个MCS或TBS对应的上行发送资源的时频资源。
  11. 如权利要求10所述的方法,其中,终端按如下公式确定PRACH资源与PUSCH资源之间的映射关系:
    N preamble=ceil(T preamble/αT PUSCH)
    其中,ceil为返回大于或者等于指定表达式的最小整数函数,T PUSCH=T PO*N DMRSperPO,T PO=nrofslotsMsgAPUSCH*nrofMsgAPOperSlot,N DMRSperPO从msgA-DMRS-Configuration获得,将N POperTBS=ceil(T PO/T TBS或T MCS),N POperTBS为每个TBS对应的PUSCH发送资源数目,T TBS为TBS index总数,T MCS为MCS index总数,其中,各参数含义如下:
    N preamble:在一个周期内,与每个PUSCH资源对应的Preamble index数目或者PRACH资源个数;
    T preamble:在一个周期内,Preamble index总数或者PRACH资源总数;
    T PUSCH:在一个周期内,PUSCH资源总数;
    T PO:在一个周期内,PUSCH发送的机会总数;
    nrofslotsMsgAPUSCH:在一个周期内,所有可以承载PUSCH发送的总的时隙数;
    nrofMsgAPOperSlot:每个slot里面的PUSCH发送时隙的个数;
    N DMRSperPO:每个PUSCH发送时隙所带有的DMRS的个数;
    α:在一个周期内TPO里面的PUSCH资源聚合等级,取值为α≤1。
  12. 如权利要求10所述的方法,其中,TBS索引序号或者MCS索引序号与上行发送资源的分配关系为:
    对PUSCH资源排序,在频域上PUSCH occasion由低到高排序,在时域上按照PUSCH slot index由低到高;
    为多个MCS或TBS分配一个或者多个PUSCH occasion,其中,将N POperTBS=ceil(T PO/T TBS),TBS index或MCS index与PUSCH匹配公式为:第k个PUSCH发送资源对应的第j个TBS index或MCS index:
    jTBSindex或jMCSindex=mod(kPUSCHindex,T TBS或T MCS);或,
    由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配N POperTBS
    或者,
    由高层信令指定MCS index或TBS index对应的PUSCH occasion的数目,并由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配分别为N 1,N 2,N 3…N n,N 1+N 2+N 3+…+N n=T PO
    其中,N POperTBS为每个TBS或MCS对应的PUSCH发送资源数目;T TBS为TBS index总数;T PO为在一个周期内,PUSCH发送的机会总数;T MCS为MCS index总数。
  13. 如权利要求10所述的方法,其中,终端按如下方式之一或者其组合确定网络侧的配置:
    终端根据与网络侧预先约定TBS索引序号或者MCS索引序号与上行发送资源的映射关系,确定网络侧配置的上行发送资源,以及TBS或者MCS;或,
    终端按MCS index,以及不同TBS索引序号或者MCS索引序号与上行发送资源对应关系,和,确定在网络侧配置的MSGA中的任意上行发送资源上发送MSGA;或,
    终端根据网络侧广播通知的上行发送资源与TBS索引序号或者MCS索引序号的映射关系确定网络侧配置的上行发送资源,以及TBS或者MCS。
  14. 如权利要求13所述的方法,其中,终端确定网络侧配置的上行发送资源,以及TBS或者MCS,包括:
    从接收到广播信令中确定出TBS或MCS,以及MSGA中PRACH资源和PUSCH资源;
    根据映射关系确定出MSGA中每个上行发送资源可以承载的信息比特量;
    终端根据需发送的上行数据块大小选择其中一个上行发送资源以及确定对应的TBS或MCS。
  15. 如权利要求14所述的方法,其中,终端确定网络侧配置的上行发送资源,以及TBS或者MCS,包括:
    从接收到广播信令中确定出TBS索引序号或MCS索引序号,以及针对该TBS索引序号或MCS索引序号在MSGA中分配的PRACH资源和PUSCH资源;
    确定出每个TBS索引序号或MCS索引序号对应的MSGA中每个上行发送资源可以承载的信息比特量;
    终端根据需发送的上行数据块大小选择其中一个上行发送资源以及确定对应的TBS或MCS。
  16. 如权利要求14或15所述的方法,其中,终端确定对应的TBS或MCS,包括:
    若广播信令中的MCS是固定的MCS等级,终端确定相应的TBS;
    若广播信令中的MCS是多个MCS等级,终端根据RSRP和/或SINR选定能够匹配的一个或者多个MCS等级,针对多个匹配的MCS等级,选择MCS最低等级作为最终发送的MCS等级。
  17. 如权利要求16所述的方法,其中,当一个MCS等级有多个上行发送资源可选时,终端从中随机选择出一个上行发送资源,或,按上行发送资源的时频资源时序选择出一个上行发送资源。
  18. 如权利要求10所述的方法,其中,终端根据网络侧按如下方式之一或者其组合的指示确定TBS索引或者MCS索引与上行发送资源的映射关系:
    确定上行发送资源编号,通过上行发送资源编号确定所述映射关系,其中,TBS索引或者MCS索引与上行发送资源编号的映射关系是预设的;或,
    根据广播指示的TBS索引或者MCS索引确定该TBS索引或者MCS索引能在任一上行发送资源上发送,其中,广播指示的TBS索引或者MCS索引能在任一上行发送资源上发送是预设的;或,
    根据广播指示确定TBS索引或者MCS索引以及对应的上行发送资源。
  19. 如权利要求10所述的方法,其中,在所述PRACH资源与PUSCH资源之间的映射关系中,PRACH资源按组分配,PUSCH资源按组分配,其中:
    一组PRACH资源对应至少两组PUSCH资源;或,
    一组PRACH资源对应一组PUSCH资源。
  20. 如权利要求19所述的方法,其中,在一组PRACH资源对应至少两组PUSCH资源时,一组PRACH资源中的每个PRACH资源对应每组PUSCH资源中的一个PUSCH资源;或者,
    一组PRACH资源分为若干小组的PRACH资源,每小组PRACH资源对应一组PUSCH资源。
  21. 一种基站,包括:
    处理器,用于读取存储器中的程序,执行下列过程:
    接收终端发送的MSGA,其中,发送MSGA的上行发送资源是网络侧配置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同,终端根据发送的上行数据块大小选择其中一个上行发送资源来发送MSGA;
    向终端发送MSGB;
    收发机,用于在处理器的控制下接收和发送数据。
  22. 如权利要求21所述的基站,其中,配置上行发送资源包括:配置PRACH资源和PUSCH资源,以及PRACH资源与PUSCH资源之间的映射关系;
    配置上行发送资源进一步包括:
    针对每种上行数据块的大小分配一个或者多个MCS或TBS,以及每个MCS或TBS对应的上行发送资源的时频资源。
  23. 如权利要求22所述的基站,其中,按如下公式建立PRACH资源与PUSCH资源之间的映射关系:
    N preamble=ceil(T preamble/αT PUSCH)
    其中,ceil为返回大于或者等于指定表达式的最小整数函数,T PUSCH=T PO*N DMRSperPO,T PO=nrofslotsMsgAPUSCH*nrofMsgAPOperSlot,N DMRSperPO从msgA-DMRS-Configuration获得,将N POperTBS=ceil(T PO/T TBS或T MCS),N POperTBS为每个TBS对应的PUSCH发送资源数目,T TBS为TBS index总数,T MCS为MCS index总数,其中,各参数含义如下:
    N preamble:在一个周期内,与每个PUSCH资源对应的Preamble index数目或者PRACH资源个数;
    T preamble:在一个周期内,Preamble index总数或者PRACH资源总数;
    T PUSCH:在一个周期内,PUSCH资源总数;
    T PO:在一个周期内,PUSCH发送的机会总数;
    nrofslotsMsgAPUSCH:在一个周期内,所有可以承载PUSCH发送的总的时隙数;
    nrofMsgAPOperSlot:每个slot里面的PUSCH发送时隙的个数;
    N DMRSperPO:每个PUSCH发送时隙所带有的DMRS的个数;
    α:在一个周期内TPO里面的PUSCH资源聚合等级,取值为α≤1。
  24. 如权利要求22所述的基站,其中,TBS索引序号或者MCS索引序号与上行发送资源的分配关系为:
    对PUSCH资源排序,在频域上PUSCH occasion由低到高排序,在时域上按照PUSCH slot index由低到高;
    为多个MCS或TBS分配一个或者多个PUSCH occasion,其中,将N POperTBS=ceil(T PO/T TBS),TBS index或MCS index与PUSCH匹配公式为:第k个PUSCH发送资源对应的第j个TBS index或MCS index:
    jTBSindex或jMCSindex=mod(kPUSCHindex,T TBS或T MCS);或,
    由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配N POperTBS
    或者,
    由高层信令指定MCS index或TBS index对应的PUSCH occasion的数目,并由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配分别为N 1,N 2,N 3…N n,N 1+N 2+N 3+…+N n=T PO
    其中,N POperTBS为每个TBS或MCS对应的PUSCH发送资源数目;T TBS为TBS index总数;T PO为在一个周期内,PUSCH发送的机会总数;T MCS为MCS index总数。
  25. 如权利要求22所述的基站,其中,按如下方式之一或者其组合进行配置:
    配置上行发送资源,以及不同的TBS索引序号或者MCS索引序号,其 中,网络侧和UE预先约定TBS索引序号或者MCS索引序号与上行发送资源的映射关系;或,
    配置多个可以在MSGA中的任意上行发送资源发送的MCS index,以及不同的TBS索引序号或者MCS索引序号,其中,网络不为每个TBS或MCS分配专属的MSGA中的上行发送资源,网络侧在上行发送资源上盲解编码调制方式;或,
    配置上行发送资源,以及上行发送资源与TBS索引序号或者MCS索引序号的映射关系,其中,通过广播通知UE所述上行发送资源与TBS索引序号或者MCS索引序号的映射关系。
  26. 如权利要求22所述的基站,其中,按如下方式之一或者其组合指示UE TBS索引或者MCS索引与上行发送资源的映射关系:
    将上行发送资源编号,预设TBS索引或者MCS索引与上行发送资源编号的映射关系,通过上行发送资源编号指示所述映射关系;或,
    预设广播指示的TBS索引或者MCS索引能在任一上行发送资源上发送,通过广播指示TBS索引或者MCS索引;或,
    通过广播指示TBS索引或者MCS索引以及对应的上行发送资源。
  27. 如权利要求22所述的基站,其中,在所述PRACH资源与PUSCH资源之间的映射关系中,PRACH资源按组分配,PUSCH资源按组分配,其中:
    一组PRACH资源对应至少两组PUSCH资源;或,
    一组PRACH资源对应一组PUSCH资源。
  28. 如权利要求27所述的基站,其中,在一组PRACH资源对应至少两组PUSCH资源时,一组PRACH资源中的每个PRACH资源对应每组PUSCH资源中的一个PUSCH资源;或者,
    一组PRACH资源分为若干小组的PRACH资源,每小组PRACH资源对应一组PUSCH资源。
  29. 一种用户设备,包括:
    处理器,用于读取存储器中的程序,执行下列过程:
    获取发送MSGA的上行发送资源,其中,发送MSGA的上行发送资源是网络侧配置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同;
    根据发送的上行数据块大小选择其中一个上行发送资源;
    在选择的上行发送资源上向网络侧发送MSGA;
    收发机,用于在处理器的控制下接收和发送数据。
  30. 如权利要求29所述的用户设备,其中,网络侧配置上行发送资源包括:配置PRACH资源和PUSCH资源,以及PRACH资源与PUSCH资源之间的映射关系;
    网络侧配置上行发送资源进一步包括:
    网络侧针对每种上行数据块的大小分配一个或者多个MCS或TBS,以及 每个MCS或TBS对应的上行发送资源的时频资源。
  31. 如权利要求30所述的用户设备,其中,按如下公式确定PRACH资源与PUSCH资源之间的映射关系:
    N preamble=ceil(T preamble/αT PUSCH)
    其中,ceil为返回大于或者等于指定表达式的最小整数函数,T PUSCH=T PO*N DMRSperPO,T PO=nrofslotsMsgAPUSCH*nrofMsgAPOperSlot,N DMRSperPO从msgA-DMRS-Configuration获得,将N POperTBS=ceil(T PO/T TBS或T MCS),N POperTBS为每个TBS对应的PUSCH发送资源数目,T TBS为TBS index总数,T MCS为MCS index总数,其中,各参数含义如下:
    N preamble:在一个周期内,与每个PUSCH资源对应的Preamble index数目或者PRACH资源个数;
    T preamble:在一个周期内,Preamble index总数或者PRACH资源总数;
    T PUSCH:在一个周期内,PUSCH资源总数;
    T PO:在一个周期内,PUSCH发送的机会总数;
    nrofslotsMsgAPUSCH:在一个周期内,所有可以承载PUSCH发送的总的时隙数;
    nrofMsgAPOperSlot:每个slot里面的PUSCH发送时隙的个数;
    N DMRSperPO:每个PUSCH发送时隙所带有的DMRS的个数;
    α:在一个周期内TPO里面的PUSCH资源聚合等级,取值为α≤1。
  32. 如权利要求30所述的用户设备,其中,TBS索引序号或者MCS索引序号与上行发送资源的分配关系为:
    对PUSCH资源排序,在频域上PUSCH occasion由低到高排序,在时域上按照PUSCH slot index由低到高;
    为多个MCS或TBS分配一个或者多个PUSCH occasion,其中,将N POperTBS=ceil(T PO/T TBS),TBS index或MCS index与PUSCH匹配公式为:第k个PUSCH发送资源对应的第j个TBS index或MCS index:
    jTBSindex或jMCSindex=mod(kPUSCHindex,T TBS或T MCS);或,
    由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配N POperTBS
    或者,
    由高层信令指定MCS index或TBS index对应的PUSCH occasion的数目,并由最低的TBS index或MCS index开始,由低到高为每个TBS index或MCS index分配分别为N 1,N 2,N 3…N n,N 1+N 2+N 3+…+N n=T PO
    其中,N POperTBS为每个TBS或MCS对应的PUSCH发送资源数目;T TBS为TBS index总数;T PO为在一个周期内,PUSCH发送的机会总数;T MCS为MCS index总数。
  33. 如权利要求30所述的用户设备,其中,按如下方式之一或者其组合确定网络侧的配置:
    根据与网络侧预先约定TBS索引序号或者MCS索引序号与上行发送资源的映射关系,确定网络侧配置的上行发送资源,以及TBS或者MCS;或,
    按MCS index,以及不同TBS索引序号或者MCS索引序号,与上行发送资源对应关系,和,确定在网络侧配置的MSGA中的任意上行发送资源上发送MSGA;或,
    根据网络侧广播通知的上行发送资源与TBS索引序号或者MCS索引序号的映射关系确定网络侧配置的上行发送资源,以及TBS或者MCS。
  34. 如权利要求33所述的用户设备,其中,确定网络侧配置的上行发送资源,以及TBS或者MCS,包括:
    从接收到广播信令中确定出TBS或MCS,以及MSGA中PRACH资源和PUSCH资源;
    根据映射关系确定出MSGA中每个上行发送资源可以承载的信息比特量;
    根据需发送的上行数据块大小选择其中一个上行发送资源以及确定对应的TBS或MCS。
  35. 如权利要求34所述的用户设备,其中,确定网络侧配置的上行发送资源,以及TBS或者MCS,包括:
    从接收到广播信令中确定出TBS索引序号或MCS索引序号,以及针对该TBS索引序号或MCS索引序号在MSGA中分配的PRACH资源和PUSCH资源;
    确定出每个TBS索引序号或MCS索引序号对应的MSGA中每个上行发送资源可以承载的信息比特量;
    根据需发送的上行数据块大小选择其中一个上行发送资源以及确定对应的TBS或MCS。
  36. 如权利要求34或35所述的用户设备,其中,确定对应的TBS或MCS,包括:
    若广播信令中的MCS是固定的MCS等级,确定相应的TBS;
    若广播信令中的MCS是多个MCS等级,根据RSRP和/或SINR选定能够匹配的一个或者多个MCS等级,针对多个匹配的MCS等级,选择MCS最低等级作为最终发送的MCS等级。
  37. 如权利要求36所述的用户设备,其中,当一个MCS等级有多个上行发送资源可选时,从中随机选择出一个上行发送资源,或,按上行发送资源的时频资源时序选择出一个上行发送资源。
  38. 如权利要求30所述的用户设备,其中,根据网络侧按如下方式之一或者其组合的指示确定TBS索引或者MCS索引与上行发送资源的映射关系:
    确定上行发送资源编号,通过上行发送资源编号确定所述映射关系,其中,TBS索引或者MCS索引与上行发送资源编号的映射关系是预设的;或,
    根据广播指示的TBS索引或者MCS索引确定该TBS索引或者MCS索引能在任一上行发送资源上发送,其中,广播指示的TBS索引或者MCS索引能在任一上行发送资源上发送是预设的;或,
    根据广播指示确定TBS索引或者MCS索引以及对应的上行发送资源。
  39. 如权利要求30所述的用户设备,其中,在所述PRACH资源与PUSCH资源之间的映射关系中,PRACH资源按组分配,PUSCH资源按组分配,其中:
    一组PRACH资源对应至少两组PUSCH资源;或,
    一组PRACH资源对应一组PUSCH资源。
  40. 如权利要求39所述的用户设备,其中,在一组PRACH资源对应至少两组PUSCH资源时,一组PRACH资源中的每个PRACH资源对应每组PUSCH资源中的一个PUSCH资源;或者,
    一组PRACH资源分为若干小组的PRACH资源,每小组PRACH资源对应一组PUSCH资源。
  41. 一种随机接入装置,包括:
    网络侧接收模块,用于接收终端发送的MSGA,其中,发送MSGA的上行发送资源是网络侧配置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同,终端根据发送的上行数据块大小选择其中一个上行发送资源来发送MSGA;
    网络侧发送模块,用于向终端发送MSGB。
  42. 一种随机接入装置,包括:
    终端侧获取模块,用于获取发送MSGA的上行发送资源,其中,发送MSGA的上行发送资源是网络侧配置的,上行发送资源至少有两个,每个上行发送资源上发送的上行数据块大小不同;
    终端侧选择模块,用于根据发送的上行数据块大小选择其中一个上行发送资源;
    终端侧发送模块,用于在选择的上行发送资源上向网络侧发送MSGA。
  43. 一种计算机可读存储介质,其中,所述计算机可读存储介质存储有执行权利要求1至20任一所述方法的程序。
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