WO2020222282A1 - ユーザ装置及び基地局装置 - Google Patents
ユーザ装置及び基地局装置 Download PDFInfo
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- WO2020222282A1 WO2020222282A1 PCT/JP2019/018193 JP2019018193W WO2020222282A1 WO 2020222282 A1 WO2020222282 A1 WO 2020222282A1 JP 2019018193 W JP2019018193 W JP 2019018193W WO 2020222282 A1 WO2020222282 A1 WO 2020222282A1
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- random access
- base station
- message
- access procedure
- shared channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
- H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access
Definitions
- the present invention relates to a user device and a base station device in a wireless communication system.
- Non-Patent Document 1 NR (New Radio) (also called “5G”), which is the successor system to LTE (Long Term Evolution), the requirements are a large-capacity system, high-speed data transmission speed, low delay, and simultaneous operation of many terminals. Techniques that satisfy connection, low cost, power saving, etc. are being studied (for example, Non-Patent Document 1).
- Random access is executed for synchronization establishment or scheduling request between user equipment and base station equipment.
- CBRA Contention-based random access
- CFRA Contention-free random access
- a 2-step random access procedure using MsgA and MsgB is being studied in addition to the conventional 4-step random access procedure.
- the user device and the base station device need to determine the TBS (Transport Block Size) of the PUSCH (Physical Uplink Shared Channel) for transmitting the data portion excluding the random access preamble of MsgA.
- TBS Transport Block Size
- PUSCH Physical Uplink Shared Channel
- the present invention has been made in view of the above points, and an object of the present invention is to determine the size of a message used in a random access procedure.
- a transmitter that transmits a first message including a random access preamble in a two-step random access procedure to a base station apparatus and a second message that resolves a collision in a two-step random access procedure are transmitted to the base.
- a user device having a receiving unit that receives from the station device and a control unit that determines the transport block size of the uplink shared channel included in the first message based on parameters related to communication with the base station device.
- the size of the message used in the random access procedure can be determined.
- LTE Long Term Evolution
- LTE-Advanced LTE-Advanced and later methods (eg, NR) unless otherwise specified.
- SS Synchronization signal
- PSS Primary SS
- SSS Secondary SS
- PBCH Physical broadcast channel
- PRACH Physical
- NR-SS NR-SS
- NR-PBCH Physical broadcast channel
- PRACH Physical
- the duplex system may be a TDD (Time Division Duplex) system, an FDD (Frequency Division Duplex) system, or other system (for example, Flexible Duplex, etc.). Method may be used.
- TDD Time Division Duplex
- FDD Frequency Division Duplex
- Method may be used.
- “configuring" the radio parameter or the like may mean that a predetermined value is set in advance (Pre-configure), or the base station apparatus 10 Alternatively, the radio parameter notified from the user device 20 may be set.
- FIG. 1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention.
- the wireless communication system according to the embodiment of the present invention includes a base station device 10 and a user device 20 as shown in FIG. Although FIG. 1 shows one base station device 10 and one user device 20, this is an example, and there may be a plurality of each.
- the base station device 10 is a communication device that provides one or more cells and performs wireless communication with the user device 20.
- the physical resources of the radio signal are defined in the time domain and the frequency domain, the time domain may be defined by the number of OFDM symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks.
- the base station apparatus 10 transmits a synchronization signal and system information to the user apparatus 20. Synchronous signals are, for example, NR-PSS and NR-SSS.
- the system information is transmitted by, for example, NR-PBCH, and is also referred to as broadcast information. As shown in FIG.
- the base station apparatus 10 transmits a control signal or data to the user apparatus 20 by DL (Downlink), and receives the control signal or data from the user apparatus 20 by UL (Uplink). Both the base station device 10 and the user device 20 can perform beamforming to transmit and receive signals. Further, both the base station device 10 and the user device 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Further, both the base station device 10 and the user device 20 may communicate via SCell (Secondary Cell) and PCell (Primary Cell) by CA (Carrier Aggregation).
- SCell Secondary Cell
- PCell Primary Cell
- the user device 20 is a communication device having a wireless communication function such as a smartphone, a mobile phone, a tablet, a wearable terminal, and a communication module for M2M (Machine-to-Machine).
- the user apparatus 20 is provided by a wireless communication system by receiving a control signal or data from the base station apparatus 10 in DL and transmitting the control signal or data to the base station apparatus 10 in UL. Use various communication services.
- user equipment 20 uses a random access preamble or UE (User Equipment) identifier as a UL signal at the base station. It is transmitted to the device 10, and the base station device 10 transmits information for performing random access response and collision resolution to the user device 20 as a DL signal.
- UE User Equipment
- FIG. 2 is a sequence diagram for explaining an example (1) of the random access procedure.
- An example of a random access procedure shown in FIG. 2 is a collision-type random access procedure.
- the user apparatus 20 transmits a random access preamble to the base station apparatus 10.
- the base station apparatus 10 transmits a random access response to the user apparatus 20 (S12).
- the user apparatus 20 performs the transmission scheduled by the random access response to the base station apparatus 10 (S13).
- information identifying the user device 20 is transmitted.
- the base station apparatus 10 transmits information for performing collision resolution to the user apparatus 20 (S14). If the conflict resolution is successful, the random access procedure is successful and complete.
- FIG. 3 is a sequence diagram for explaining an example (2) of the random access procedure.
- An example of a random access procedure shown in FIG. 3 is a non-collision type random access procedure.
- the base station apparatus 10 assigns the random access preamble to the user apparatus 20.
- the user apparatus 20 transmits the assigned random access preamble to the base station apparatus 10 (S22).
- the base station device 10 transmits a random access response to the user device 20.
- FIG. 4 is a sequence diagram for explaining an example of a 4-step random access procedure.
- An example of the random access procedure shown in FIG. 4 is a collision type random access procedure as in FIG. 2, and is a 4-step random access procedure.
- the user apparatus 20 transmits a random access preamble to the base station apparatus 10 as Msg1.
- the base station apparatus 10 transmits a random access response to the user apparatus 20 as Msg2 (S32).
- the user device 20 transmits the UE identifier to the base station device 10 as Msg3 (S33).
- the base station apparatus 10 transmits information for performing collision resolution as Msg4 to the user apparatus 20. If the conflict resolution is successful, the random access procedure is successful and complete.
- FIG. 5 is a sequence diagram for explaining an example of a two-step random access procedure.
- An example of a random access procedure shown in FIG. 5 is a collision-type random access procedure, which is a two-step random access procedure.
- a two-step random access procedure is being considered to complete the random access procedure in a short period of time.
- the user apparatus 20 transmits a random access preamble and a PUSCH (Physical Uplink Shared Channel) as MsgA to the base station apparatus 10.
- PUSCH Physical Uplink Shared Channel
- the base station apparatus 10 transmits MsgB to the user apparatus 20 (S42).
- MsgB may include content corresponding to Msg2 and Msg4 in a 4-step random access procedure. If the conflict resolution is successful, the random access procedure is successful and complete. By adopting the 2-step random access procedure, effects such as low delay and reduction of power consumption are expected.
- FIG. 6 is a diagram showing an example of Msg2 in a 4-step random access procedure.
- the MAC (Medium Access Control) payload of Msg2, that is, a random access response includes “Timing Advance Command”, “UL Grant”, and “Temporary C-RNTI”.
- “R” indicates a reservation bit.
- Timing Advance Command is a parameter that determines the timing of UL transmission. In the base station apparatus 10, the timing of receiving the UL transmitted from each user apparatus 20 is adjusted so as to fall within a predetermined range.
- UL Grant is a parameter for scheduling UL. Based on “UL Grant”, the user device 20 transmits Msg3 by UL.
- Temporary C-RNTI is a temporary C-RNTI (Cell-Radio Network Temporary Identifier). If the collision resolution is successful in Msg4, "Temporary C-RNTI" is used as C-RNTI.
- FIG. 7 is a diagram showing an example of Msg4 in a 4-step random access procedure.
- Msg4 that is, "conflict resolution” includes "UE Condition Resolution Identity".
- the user device 20 determines that the conflict resolution is successful. That is, when Msg3 including CCCH SDU is transmitted and the PDCCH (Physical Downlink Control Channel) to which Msg4 is transmitted is addressed to Temporary C-RNTI and includes a part of the transmitted CCCH SDU, the conflict resolution is successful. It is judged that it has been done.
- the random access procedure for resolving the above collision will be referred to as "random access procedure using CCCH SDU".
- the data transmitted via PUSCH excluding the preamble among MsgA in the two-step random access procedure contains at least information corresponding to Msg3 (for example, information related to RRC (Radio Resource Control) connection request). Random. Further, it is assumed that the data transmitted via the PUSCH excluding the preamble in MsgA includes, for example, information related to user data.
- TBS Transport Block Size
- FIG. 8 is a flowchart for explaining an example of a random access procedure according to the embodiment of the present invention.
- the user apparatus 20 determines the TBS of the PUSCH contained in MsgA based on a predetermined parameter. Subsequently, the user apparatus 20 applies the determined TBS and transmits MsgA (S52).
- the TBS of PUSCH contained in MsgA may be determined based on the predetermined parameters shown in 1) -5) below.
- the user device 20 may directly determine the TBS based on a predetermined parameter, or a predetermined parameter satisfies a threshold value or a condition from a plurality of preset TBS candidates (for example, five types of candidates). Candidates may be selected.
- DL radio quality For example, downlink RSRP (Reference Signal Received Power), RSRQ (Reference Signal Received Quality), SINR (Signal to Interference plus Noise power Ratio), path loss, etc. 2) UL transmission power
- the actual transmission power value information indicating whether or not the maximum transmission power has been reached, or information indicating whether or not the transmission power corresponding to the target reception power is equal to or less than a predetermined value.
- the predetermined value may be specified in the specifications or notified from the network.
- the UL transmission power may be the transmission power of the PUSCH or the transmission power of the preamble.
- Data size transmitted by the UE may be freely determined by the UE, or only a predetermined data type may be added. For example, C-RNTI, BSR (Buffer Status Report) MAC-CE (Media Access Control-Control Element), CCCH (Common Control Channel) SDU (Service Data Unit), PHR (Power Headroom Report), specific LCH (Logical Channel) ) Data and the like may be considered.
- BSR Buffer Status Report
- MAC-CE Media Access Control-Control Element
- CCCH Common Control Channel
- SDU Service Data Unit
- PHR Power Headroom Report
- specific LCH Logical Channel
- the specific LCH is indicated by, for example, a high-priority LCH (SRB (Signalling Radio Bearer), specific QoS data, LCH associated with a bearer in which packet duplication transmission is set, etc.), or a network.
- LCH etc. may be used.
- Parameters related to LCH QoS for example, request delay, packet loss rate, reliability, and the like.
- the parameters 1) -5) above may be used in combination.
- the method of determining TBS from the above parameters may be specified in the specification, notified from the network, or executed by the UE implementation. For example, the correspondence between each parameter and TBS may be notified or specified. Further, when a candidate whose predetermined parameter satisfies a threshold value or a condition is selected from a plurality of TBS candidates set or defined in advance, and when there are a plurality of candidates which further satisfy the threshold value or the condition, the plurality of candidates One candidate may be selected by the UE implementation from the above, or a method of selecting one candidate from the plurality of candidates may be specified in the specification or notified from the network.
- the user device 20 when the MsgA is retransmitted or when the fallback to the 4-step random access procedure (for example, the PUSCH contained in the MsgA is transmitted by the Msg3), the user device 20 The success probability of transmission / reception may be improved by setting TBS to a value smaller than that at the time of the previous PUSCH transmission. For example, when selecting from the TBS candidates defined by a plurality of stages, the user device 20 may select a candidate one stage smaller than the candidate transmitted immediately before, or two or more stages smaller than the candidate transmitted immediately before. Candidates may be selected.
- the user apparatus 20 indirectly determines or selects the TBS by determining or selecting other parameters without directly determining or selecting the TBS itself.
- TBS may be indirectly determined or selected by determining or selecting the number of RBs (Resource Blocks) and MCS, respectively.
- TBS may be read as "one or more parameters that determine TBS.”
- FIG. 9 is a sequence diagram for explaining an example of a random access procedure according to the embodiment of the present invention.
- Candidates for PUSCH TBS included in MsgA may be specified in advance in the specifications, or may be notified in advance from the network to the user apparatus 20 by broadcast information, RRC signaling, or the like.
- step S61 the base station apparatus 10 has a set of TBS candidates for PUSCH contained in MsgA (for example, the number of bits is X, Y, Z) and DL radio quality threshold information associated with each candidate of the set (for example,).
- RSRP transmits X: ⁇ 90 dBm or higher, Y: ⁇ 80 dBm or higher, Z: ⁇ 70 dBm or higher) to the user device 20.
- Step S61 may not be performed if the specifications predefine the available candidates for PUSCH TBS contained in MsgA.
- step S62 the base station apparatus 10 transmits the DL reference signal to the user apparatus 20.
- step S63 the user apparatus 20 selects a TBS candidate that satisfies the DL radio quality threshold information associated with each candidate of the set received in step S61, based on the radio quality of the DL reference signal received in step S62. ..
- the candidates satisfying the DL radio quality threshold information are X and Y.
- the user apparatus 20 may select X or Y based on the parameters 1) -5) described in FIG. 8 (for example, Y), or one candidate may be selected by the UE implementation.
- the user apparatus 20 transmits the MsgA in which the TBS (for example, Y) of the PUSCH included in the selected MsgA is set to the base station apparatus 10 (S64).
- step S63 the user apparatus 20 selects a TBS candidate that satisfies the DL radio quality threshold information associated with each candidate of the set received in step S61 based on the radio quality of the DL reference signal received in step S62. You may select one. For example, if the RSRP of the received DL reference signal is ⁇ 85 dBm, candidate X may be selected.
- the user apparatus 20 may notify the base station apparatus 10 of the TBS of the PUSCH contained in the determined or selected MsgA by the method shown in a) -e) below.
- the preamble ID may be divided into a plurality of groups to which TBS is associated with each other.
- the user device 20 notifies the base station device 10 of the TBS associated with the preamble ID by transmitting the preamble.
- the method of dividing the plurality of groups to which the TBSs are associated with each other may be notified in advance from the base station apparatus 10 to the user apparatus 20, or may be specified in advance in the specifications.
- RACH occasion RACH occasion, resource to send preamble
- RACH opportunities may be divided into multiple groups, each associated with TBS.
- the user apparatus 20 notifies the base station apparatus 10 of the TBS associated with the RACH opportunity by transmitting the preamble at the RACH opportunity.
- the method of dividing the plurality of groups to which the TBSs are associated with each other may be notified in advance from the base station apparatus 10 to the user apparatus 20, or may be specified in advance in the specifications.
- RACH opportunities may be classified in the time domain, frequency domain or time domain and frequency domain.
- resources in which PUSCHs are located may be divided into a plurality of groups to which TBSs are associated.
- the user apparatus 20 notifies the base station apparatus 10 of the TBS associated with the resource in which the PUSCH is arranged by transmitting the PUSCH of MsgA.
- the method of dividing the plurality of groups to which the TBSs are associated with each other may be notified in advance from the base station apparatus 10 to the user apparatus 20, or may be specified in advance in the specifications.
- the resource in which the PUSCH is located may be classified in the time domain, the frequency domain or the time domain and the frequency domain.
- the DMRS port of PUSCH or the scrambling of DMRS may be divided into a plurality of groups to which TBS is associated with each other.
- the user apparatus 20 notifies the base station apparatus 10 of the TBS associated with the DMRS port or DMRS scrambling by transmitting the PUSCH of MsgA.
- the method of dividing the plurality of groups to which the TBSs are associated with each other may be notified in advance from the base station apparatus 10 to the user apparatus 20, or may be specified in advance in the specifications.
- the user apparatus 20 may explicitly notify the base station apparatus 10 of TBS by UCI before the start of the two-step random access procedure.
- the TBS of the MsgA PUSCH other than the UCI may be notified to the base station apparatus 10 by the UCI using a part of the MsgA PUSCH.
- the PUSCH TBS notification methods included in MsgA in a) -e) above may be used in combination. Further, which of the PUSCH TBS notification methods included in MsgA in a) -e) above may be specified in the specifications, may be notified from the network, or may be selected by the UE implementation. You may.
- the association between the PUSCH TBS contained in MsgA and the MsgA preamble (preamble ID or RACH opportunity) and the MsgA PUSCH (PUSCH resource, PUSCH DMRS port or PUSCH DMRS scrambling) is defined in advance in the specifications.
- the base station device 10 may notify the user device 20.
- the user apparatus 20 may notify the TBS of the PUSCH included in the MsgA by selecting the PUSCH of the MsgA according to the selected TBS, further selecting the preamble of the MsgA, and transmitting the MsgA.
- the selectable MsgA PUSCHs can be selected. There are multiple.
- the UE may, for example, randomly select and transmit the MsgA PUSCHs from the selectable MsgA PUSCHs, or select from the selectable MsgA PUSCHs. The method of doing so may be specified in the specifications or notified from the network.
- the resource in the time domain of the PUSCH of MsgA may be selected from only the PUSCH of the resource in the latest time domain from the timing at which transmission is possible.
- the MsgA PUSCH frequency resources, DMRS ports or DMRS scrambling may be randomly selected, or the selection method may be specified or notified in the specification. The above selection method when there are a plurality of MsgA PUSCHs may be applied even when the correspondence between TBS and MsgA PUSCHs is not defined.
- the user apparatus 20 can determine or select the TBS of PUSCH included in MsgA based on the parameter indicating the communication status in the two-step random access procedure. Further, the user apparatus 20 can notify the base station apparatus 10 of the TBS of the PUSCH contained in the determined or selected MsgA in the two-step random access procedure.
- the size of the message used in the random access procedure can be determined.
- the base station apparatus 10 and the user apparatus 20 include a function of carrying out the above-described embodiment.
- the base station apparatus 10 and the user apparatus 20 may each have only a part of the functions in the embodiment.
- FIG. 10 is a diagram showing an example of the functional configuration of the base station apparatus 10.
- the base station apparatus 10 includes a transmission unit 110, a reception unit 120, a setting unit 130, and a control unit 140.
- the functional configuration shown in FIG. 10 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be executed.
- the transmission unit 110 includes a function of generating a signal to be transmitted to the user device 20 side and transmitting the signal wirelessly.
- the receiving unit 120 includes a function of receiving various signals transmitted from the user apparatus 20 and acquiring information of, for example, a higher layer from the received signals. Further, the transmission unit 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signal, DL / UL data signal, etc. to the user device 20.
- the setting unit 130 stores preset setting information and various setting information to be transmitted to the user device 20 in the storage device, and reads them out from the storage device as needed.
- the content of the setting information is, for example, a setting related to random access.
- the control unit 140 executes a 2-step random access procedure or a 4-step random access procedure with the user device 20 as described in the embodiment.
- the function unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and the function unit related to signal reception in the control unit 140 may be included in the reception unit 120.
- FIG. 11 is a diagram showing an example of the functional configuration of the user device 20.
- the user device 20 includes a transmission unit 210, a reception unit 220, a setting unit 230, and a control unit 240.
- the functional configuration shown in FIG. 11 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be executed.
- the transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
- the receiving unit 220 wirelessly receives various signals and acquires a signal of a higher layer from the received signal of the physical layer. Further, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals and the like transmitted from the base station apparatus 10. Further, for example, the transmission unit 210 connects the other user device 20 to PSCCH (Physical Sidelink Control Channel), PSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel) as D2D communication. ) Etc., and the receiving unit 120 receives the PSCCH, PSCH, PSDCH, PSBCH, etc. from the other user device 20.
- PSCCH Physical Sidelink Control Channel
- PSCH Physical Sidelink Shared Channel
- PSDCH Physical Sidelink Discovery Channel
- PSBCH Physical
- the setting unit 230 stores various setting information received from the base station device 10 or the user device 20 by the receiving unit 220 in the storage device, and reads it out from the storage device as needed.
- the setting unit 230 also stores preset setting information.
- the content of the setting information is, for example, a setting related to random access.
- the control unit 240 executes a 2-step random access procedure or a 4-step random access procedure with the base station apparatus 10 as described in the embodiment.
- the function unit related to signal transmission in the control unit 240 may be included in the transmission unit 210, and the function unit related to signal reception in the control unit 240 may be included in the reception unit 220.
- each functional block may be realized by using one device that is physically or logically connected, or directly or indirectly (for example, by two or more devices that are physically or logically separated). , Wired, wireless, etc.) and may be realized using these plurality of devices.
- the functional block may be realized by combining the software with the one device or the plurality of devices.
- Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and assumption.
- broadcasting notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but only these. I can't.
- a functional block (constituent unit) that functions transmission is called a transmitting unit or a transmitter.
- the method of realizing each of them is not particularly limited.
- the base station device 10, the user device 20, and the like in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure.
- FIG. 12 is a diagram showing an example of the hardware configuration of the base station device 10 and the user device 20 according to the embodiment of the present disclosure.
- the above-mentioned base station device 10 and user device 20 are physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. May be done.
- the word “device” can be read as a circuit, device, unit, etc.
- the hardware configuration of the base station device 10 and the user device 20 may be configured to include one or more of the devices shown in the figure, or may be configured not to include some of the devices.
- the processor 1001 For each function in the base station device 10 and the user device 20, by loading predetermined software (program) on the hardware such as the processor 1001 and the storage device 1002, the processor 1001 performs an calculation and the communication device 1004 performs communication. It is realized by controlling or controlling at least one of reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.
- the processor 1001 operates, for example, an operating system to control the entire computer.
- the processor 1001 may be composed of a central processing unit (CPU: Central Processing Unit) including an interface with a peripheral device, a control device, an arithmetic unit, a register, and the like.
- CPU Central Processing Unit
- control unit 140, control unit 240, and the like may be realized by the processor 1001.
- the processor 1001 reads a program (program code), a software module, data, or the like from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002, and executes various processes according to these.
- a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used.
- the control unit 140 of the base station device 10 shown in FIG. 10 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
- the control unit 240 of the user device 20 shown in FIG. 11 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
- Processor 1001 may be implemented by one or more chips.
- the program may be transmitted from the network via a telecommunication line.
- the storage device 1002 is a computer-readable recording medium, for example, by at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory) and the like. It may be configured.
- the storage device 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like.
- the storage device 1002 can store a program (program code), a software module, or the like that can be executed to implement the communication method according to the embodiment of the present disclosure.
- the auxiliary storage device 1003 is a computer-readable recording medium, and is, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, Blu).
- -It may be composed of at least one of a ray (registered trademark) disk), a smart card, a flash memory (for example, a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, and the like.
- the storage medium described above may be, for example, a database, server or other suitable medium containing at least one of the storage device 1002 and the auxiliary storage device 1003.
- the communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like.
- the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, and the like in order to realize at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). It may be composed of.
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- the transmission / reception unit may be physically or logically separated from each other in the transmission unit and the reception unit.
- the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside.
- the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside.
- the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
- each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information.
- the bus 1007 may be configured by using a single bus, or may be configured by using a different bus for each device.
- the base station device 10 and the user device 20 include a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), an FPGA (Field Programmable Gate Array), and the like. It may be configured to include hardware, and the hardware may realize a part or all of each functional block. For example, processor 1001 may be implemented using at least one of these hardware.
- DSP Digital Signal Processor
- ASIC Application Specific Integrated Circuit
- PLD Programmable Logic Device
- FPGA Field Programmable Gate Array
- the transmission unit that transmits the first message including the random access preamble in the two-step random access procedure to the base station apparatus collides with the two-step random access procedure.
- the transport block size of the uplink shared channel included in the first message is determined based on the parameters related to the communication between the receiving unit that receives the second message to be resolved from the base station device and the base station device.
- a user device having a control unit for determining is provided.
- the user device 20 can determine or select the TBS of PUSCH included in MsgA based on the parameter indicating the communication status in the two-step random access procedure. That is, the size of the message used in the random access procedure can be determined.
- the parameters related to communication with the base station device are downlink radio quality, uplink transmission power, information related to modulation, information related to coding, parameters related to MIMO (Multiple-Input and Multiple-Output), and data size to be transmitted. And at least one of the parameters related to QoS may be included.
- the user apparatus 20 can determine or select the TBS of the PUSCH contained in MsgA based on the parameter indicating the communication status in the two-step random access procedure.
- a transport block size smaller than the transport block size used when transmitting the immediately preceding first message is used. You may use it. With this configuration, the user apparatus 20 can improve the transmission success probability at the time of PUSCH retransmission included in MsgA.
- the receiving unit receives a plurality of candidates for the transport block size of the uplink shared channel and the threshold information of the downlink radio quality associated with each candidate, and the control unit receives the downlink radio quality threshold information associated with each candidate, and the control unit transmits the downlink from the base station apparatus.
- the transport block size may be selected from the plurality of candidates based on the measurement result of the link reference signal and the threshold information of the downlink radio quality.
- the control unit has a preamble ID (Identifier) of the random access preamble, a RACH (Random Access Channel) opportunity to transmit the random access preamble, and the uplink shared channel based on the transport block size of the uplink shared channel to be used.
- the DMRS Demodulation reference signal
- the user apparatus 20 can notify the base station apparatus 10 of the TBS of the PUSCH contained in the determined or selected MsgA in the two-step random access procedure.
- the receiving unit that receives the first message including the random access preamble in the two-step random access procedure from the user device and the second unit that resolves the collision in the two-step random access procedure.
- a transmission unit that transmits a message to the user device, a preamble ID (Identifier) of the random access preamble, a RACH (Random Access Channel) opportunity to transmit the random access preamble, and an uplink shared channel included in the first message. Control to determine the transport block size of the uplink shared channel included in the first message based on the allocated resource or the DMRS (Demodulation reference signal) allocated to the uplink shared channel included in the first message.
- a base station apparatus having a unit is provided.
- the user device 20 can determine or select the TBS of PUSCH included in MsgA based on the parameter indicating the communication status in the two-step random access procedure. That is, the size of the message used in the random access procedure can be determined.
- the operation of the plurality of functional units may be physically performed by one component, or the operation of one functional unit may be physically performed by a plurality of components.
- the order of processing may be changed as long as there is no contradiction.
- the base station apparatus 10 and the user apparatus 20 have been described with reference to functional block diagrams, but such devices may be implemented in hardware, software, or a combination thereof.
- the software operated by the processor of the base station apparatus 10 according to the embodiment of the present invention and the software operated by the processor of the user apparatus 20 according to the embodiment of the present invention are random access memory (RAM), flash memory, and read, respectively. It may be stored in a dedicated memory (ROM), EPROM, EEPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.
- information notification includes physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, etc. Broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof may be used.
- RRC signaling may be referred to as an RRC message, for example, RRC. It may be a connection setup (RRCConnectionSetup) message, an RRC connection reconfiguration (RRCConnectionReconfiguration) message, or the like.
- Each aspect / embodiment described in the present disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), and 5G (5th generation mobile communication).
- system FRA (Future Radio Access), NR (new Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)) )), LTE 802.16 (WiMAX®), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth®, and other systems that utilize suitable systems and have been extended based on these. It may be applied to at least one of the next generation systems. Further, a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).
- the specific operation performed by the base station apparatus 10 in the present specification may be performed by its upper node (upper node).
- various operations performed for communication with the user device 20 are other than the base station device 10 and the base station device 10. It is clear that this can be done by at least one of the network nodes (eg, MME or S-GW, etc., but not limited to these).
- the network nodes eg, MME or S-GW, etc., but not limited to these.
- the other network nodes may be a combination of a plurality of other network nodes (for example, MME and S-GW). Good.
- the information, signals, etc. described in the present disclosure can be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input / output may be performed via a plurality of network nodes.
- the input / output information and the like may be saved in a specific location (for example, memory), or may be managed using a management table. Input / output information and the like can be overwritten, updated, or added. The output information and the like may be deleted. The input information or the like may be transmitted to another device.
- the determination in the present disclosure may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparing numerical values (for example). , Comparison with a predetermined value).
- Software is an instruction, instruction set, code, code segment, program code, program, subprogram, software module, whether called software, firmware, middleware, microcode, hardware description language, or another name.
- Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc. should be broadly interpreted to mean.
- software, instructions, information, etc. may be transmitted and received via a transmission medium.
- a transmission medium For example, a website that uses at least one of wired technology (coaxial cable, fiber optic cable, twist pair, digital subscriber line (DSL: Digital Subscriber Line), etc.) and wireless technology (infrared, microwave, etc.) When transmitted from a server, or other remote source, at least one of these wired and wireless technologies is included within the definition of transmission medium.
- the information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques.
- data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.
- a channel and a symbol may be a signal (signaling).
- the signal may be a message.
- the component carrier CC: Component Carrier
- CC Component Carrier
- system and “network” used in this disclosure are used interchangeably.
- the information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented.
- the radio resource may be one indicated by an index.
- base station Base Station
- wireless base station base station
- base station device fixed station
- NodeB nodeB
- eNodeB eNodeB
- GNB nodeB
- access point “ transmission point ”,“ reception point ”,“ transmission / reception point (transmission / reception point) ”,“ cell ”,“ sector ”
- Terms such as “cell group,” “carrier,” and “component carrier” can be used interchangeably.
- Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
- the base station can accommodate one or more (for example, three) cells.
- a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (RRH:)).
- Communication services can also be provided by (Remote Radio Head).
- the term "cell” or “sector” is a part or all of the coverage area of at least one of the base station and the base station subsystem that provides the communication service in this coverage. Point to.
- MS Mobile Station
- UE User Equipment
- Mobile stations can be subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless, depending on the trader. It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
- At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, or the like.
- At least one of the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like.
- the moving body may be a vehicle (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) May be.
- at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation.
- at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.
- IoT Internet of Things
- the base station in the present disclosure may be read by the user terminal.
- the communication between the base station and the user terminal is replaced with the communication between a plurality of user devices 20 (for example, it may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.).
- D2D Device-to-Device
- V2X Vehicle-to-Everything
- Each aspect / embodiment of the present disclosure may be applied to the configuration.
- the user device 20 may have the functions of the base station device 10 described above.
- words such as "up” and “down” may be read as words corresponding to inter-terminal communication (for example, "side").
- the uplink, downlink, and the like may be read as side channels.
- the user terminal in the present disclosure may be read as a base station.
- the base station may have the functions of the user terminal described above.
- determining and “determining” used in this disclosure may include a wide variety of actions.
- “Judgment” and “decision” are, for example, judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up, search, inquiry). It may include (eg, searching in a table, database or another data structure), ascertaining as “judgment” or “decision”.
- judgment and “decision” are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access. (Accessing) (for example, accessing data in memory) may be regarded as “judgment” or “decision”.
- judgment and “decision” mean that “resolving”, “selecting”, “choosing”, “establishing”, “comparing”, etc. are regarded as “judgment” and “decision”. Can include. That is, “judgment” and “decision” may include that some action is regarded as “judgment” and “decision”. Further, “judgment (decision)” may be read as “assuming”, “expecting”, “considering” and the like.
- connection means any direct or indirect connection or connection between two or more elements, and each other. It can include the presence of one or more intermediate elements between two “connected” or “combined” elements.
- the connections or connections between the elements may be physical, logical, or a combination thereof.
- connection may be read as "access”.
- the two elements use at least one of one or more wires, cables and printed electrical connections, and, as some non-limiting and non-comprehensive examples, the radio frequency domain. Can be considered to be “connected” or “coupled” to each other using electromagnetic energies having wavelengths in the microwave and light (both visible and invisible) regions.
- the reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot (Pilot) depending on the applicable standard.
- RS Reference Signal
- Pilot Pilot
- references to elements using designations such as “first”, “second”, etc. as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted, or that the first element must somehow precede the second element.
- the wireless frame may be composed of one or more frames in the time domain. Each one or more frames in the time domain may be referred to as a subframe. Subframes may further consist of one or more slots in the time domain.
- the subframe may have a fixed time length (eg, 1 ms) that is independent of numerology.
- the numerology may be a communication parameter that applies to at least one of the transmission and reception of a signal or channel.
- Numerology includes, for example, subcarrier spacing (SCS: SubCarrier Spacing), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI: Transmission Time Interval), number of symbols per TTI, wireless frame configuration, and transmitter / receiver.
- SCS subcarrier spacing
- TTI Transmission Time Interval
- At least one of a specific filtering process performed in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like may be indicated.
- the slot may be composed of one or more symbols in the time domain (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.). Slots may be time units based on new melody.
- OFDM Orthogonal Frequency Division Multiplexing
- SC-FDMA Single Carrier Frequency Division Multiple Access
- the slot may include a plurality of mini slots. Each minislot may consist of one or more symbols in the time domain. Further, the mini slot may be called a sub slot. A minislot may consist of a smaller number of symbols than the slot.
- a PDSCH (or PUSCH) transmitted in time units larger than the minislot may be referred to as a PDSCH (or PUSCH) mapping type A.
- the PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (or PUSCH) mapping type B.
- the wireless frame, subframe, slot, minislot and symbol all represent the time unit when transmitting a signal.
- the radio frame, subframe, slot, minislot and symbol may have different names corresponding to each.
- one subframe may be called a transmission time interval (TTI), a plurality of consecutive subframes may be called TTI, and one slot or one minislot may be called TTI.
- TTI transmission time interval
- the unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.
- TTI refers to, for example, the minimum time unit of scheduling in wireless communication.
- the base station schedules each user device 20 to allocate radio resources (frequency bandwidth that can be used in each user device 20, transmission power, etc.) in TTI units.
- the definition of TTI is not limited to this.
- the TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation.
- the time interval for example, the number of symbols
- the transport block, code block, code word, etc. may be shorter than the TTI.
- one or more TTIs may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
- a TTI having a time length of 1 ms may be referred to as a normal TTI (TTI in LTE Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, or the like.
- TTIs shorter than normal TTIs may be referred to as shortened TTIs, short TTIs, partial TTIs (partial or fractional TTIs), shortened subframes, short subframes, minislots, subslots, slots, and the like.
- the long TTI (for example, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms, and the short TTI (for example, shortened TTI, etc.) is less than the TTI length of the long TTI and 1 ms. It may be read as a TTI having the above TTI length.
- the resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain.
- the number of subcarriers contained in the RB may be the same regardless of the numerology, and may be, for example, 12.
- the number of subcarriers contained in the RB may be determined based on numerology.
- the time domain of RB may include one or more symbols, and may have a length of 1 slot, 1 mini slot, 1 subframe, or 1 TTI.
- Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.
- one or more RBs include a physical resource block (PRB: Physical RB), a sub-carrier group (SCG: Sub-Carrier Group), a resource element group (REG: Resource Element Group), a PRB pair, an RB pair, and the like. May be called.
- PRB Physical resource block
- SCG Sub-Carrier Group
- REG Resource Element Group
- PRB pair an RB pair, and the like. May be called.
- the resource block may be composed of one or a plurality of resource elements (RE: Resource Element).
- RE Resource Element
- 1RE may be a radio resource area of 1 subcarrier and 1 symbol.
- Bandwidth part (which may also be called partial bandwidth) may represent a subset of consecutive common resource blocks (RBs) for a certain neurology in a carrier.
- the common RB may be specified by the index of the RB with respect to the common reference point of the carrier.
- PRBs may be defined in a BWP and numbered within that BWP.
- the BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP).
- UL BWP UL BWP
- DL BWP DL BWP
- One or more BWPs may be set in one carrier for the UE.
- At least one of the configured BWPs may be active, and the UE may not expect to send or receive a given signal / channel outside the active BWP.
- “cell”, “carrier” and the like in this disclosure may be read as “BWP”.
- the above-mentioned structures such as wireless frames, subframes, slots, mini slots and symbols are merely examples.
- the number of subframes contained in a wireless frame the number of slots per subframe or wireless frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, included in the RB.
- the number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP: Cyclic Prefix) length, and other configurations can be variously changed.
- the term "A and B are different” may mean “A and B are different from each other”.
- the term may mean that "A and B are different from C”.
- Terms such as “separate” and “combined” may be interpreted in the same way as “different”.
- the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.
- MsgA is an example of a first message including a random access preamble in a two-step random access procedure.
- MsgB is an example of a second message for conflict resolution in a two-step random access procedure.
- Base station device 110 Transmission unit 120 Reception unit 130 Setting unit 140 Control unit 20 User device 210 Transmission unit 220 Reception unit 230 Setting unit 240 Control unit 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device
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Abstract
Description
例えば、下りのRSRP(Reference Signal Received Power)、RSRQ(Reference Signal Received Quality)、SINR(Signal to Interference plus Noise power Ratio)、パスロス等である。
2)UL送信電力
例えば、実際の送信電力値、最大送信電力に達しているか否かを示す情報又はターゲット受信電力に対応する送信電力が所定値以下であるか否かを示す情報等である。所定値は仕様で規定されるかもしくはネットワークから通知されてもよい。UL送信電力は、PUSCHの送信電力であってもよいし、プリアンブルの送信電力であってもよい。
3)変調に係る情報、符号化に係る情報又はMIMO(Multiple-Input and Multiple-Output)に関するパラメータ
例えば、MCS(Modulation and Coding Scheme)、ランク(Rank)等である。
4)UEが送信するデータサイズ
データサイズはUEにより自由に定められてもよいし、もしくは所定のデータ種別のみが加味されてもよい。例えば、C-RNTI、BSR(Buffer Status Report)MAC-CE(Media Access Control-Control Element)、CCCH(Common Control Channel)SDU(Service Data Unit)、PHR(Power Headroom Report)、特定のLCH(Logical Channel)のデータ等が考慮されてもよい。特定のLCHとは、例えば、優先度の高いLCH(SRB(Signalling Radio Bearer)、特定のQoSのデータ、パケット重複送信が設定されているベアラに関連付けられているLCH等)、又はネットワークから指示されているLCH、等であってもよい。
5)LCHのQoS(Quality of Service)に関するパラメータ
例えば、要求遅延、パケットロス率、信頼性等である。
例えば、プリアンブルIDは、TBSがそれぞれ関連付けられた複数のグループに分割されてもよい。ユーザ装置20は、プリアンブルを送信することで、プリアンブルIDに関連付けられるTBSを基地局装置10に通知する。TBSがそれぞれ関連付けられる複数のグループの分割方法は、基地局装置10からユーザ装置20に予め通知されてもよいし、予め仕様で規定されてもよい。
例えば、RACH機会は、TBSがそれぞれ関連付けられた複数のグループに分割されてもよい。ユーザ装置20は、プリアンブルをRACH機会で送信することで、RACH機会に関連付けられるTBSを基地局装置10に通知する。TBSがそれぞれ関連付けられる複数のグループの分割方法は、基地局装置10からユーザ装置20に予め通知されてもよいし、予め仕様で規定されてもよい。RACH機会は、時間領域、周波数領域又は時間領域及び周波数領域で分類されてもよい。
例えば、PUSCHが配置されるリソースは、TBSがそれぞれ関連付けられた複数のグループに分割されてもよい。ユーザ装置20は、MsgAのPUSCHを送信することで、PUSCHが配置されるリソースに関連付けられるTBSを基地局装置10に通知する。TBSがそれぞれ関連付けられる複数のグループの分割方法は、基地局装置10からユーザ装置20に予め通知されてもよいし、予め仕様で規定されてもよい。PUSCHが配置されるリソースは、時間領域、周波数領域又は時間領域及び周波数領域で分類されてもよい。
例えば、PUSCHのDMRSポート又はDMRSのスクランブリングは、TBSがそれぞれ関連付けられた複数のグループに分割されてもよい。ユーザ装置20は、MsgAのPUSCHを送信することで、DMRSポート又はDMRSのスクランブリングに関連付けられるTBSを基地局装置10に通知する。TBSがそれぞれ関連付けられる複数のグループの分割方法は、基地局装置10からユーザ装置20に予め通知されてもよいし、予め仕様で規定されてもよい。
例えば、2ステップランダムアクセス手順開始前に、ユーザ装置20は、予め基地局装置10にUCIによって明示的にTBSを通知してもよい。あるいは例えば、MsgA PUSCHの一部を用いるUCIにより、該当UCI以外のMsgA PUSCHのTBSが基地局装置10に通知されてもよい。
次に、これまでに説明した処理及び動作を実行する基地局装置10及びユーザ装置20の機能構成例を説明する。基地局装置10及びユーザ装置20は上述した実施例を実施する機能を含む。ただし、基地局装置10及びユーザ装置20はそれぞれ、実施例の中の一部の機能のみを備えることとしてもよい。
図10は、基地局装置10の機能構成の一例を示す図である。図10に示されるように、基地局装置10は、送信部110と、受信部120と、設定部130と、制御部140とを有する。図10に示される機能構成は一例に過ぎない。本発明の実施の形態に係る動作を実行できるのであれば、機能区分及び機能部の名称はどのようなものでもよい。
図11は、ユーザ装置20の機能構成の一例を示す図である。図11に示されるように、ユーザ装置20は、送信部210と、受信部220と、設定部230と、制御部240とを有する。図11に示される機能構成は一例に過ぎない。本発明の実施の形態に係る動作を実行できるのであれば、機能区分及び機能部の名称はどのようなものでもよい。
上記実施形態の説明に用いたブロック図(図10及び図11)は、機能単位のブロックを示している。これらの機能ブロック(構成部)は、ハードウェア及びソフトウェアの少なくとも一方の任意の組み合わせによって実現される。また、各機能ブロックの実現方法は特に限定されない。すなわち、各機能ブロックは、物理的又は論理的に結合した1つの装置を用いて実現されてもよいし、物理的又は論理的に分離した2つ以上の装置を直接的又は間接的に(例えば、有線、無線などを用いて)接続し、これら複数の装置を用いて実現されてもよい。機能ブロックは、上記1つの装置又は上記複数の装置にソフトウェアを組み合わせて実現されてもよい。
以上、説明したように、本発明の実施の形態によれば、2ステップランダムアクセス手順におけるランダムアクセスプリアンブルを含む第1のメッセージを基地局装置に送信する送信部と、2ステップランダムアクセス手順における衝突解決を行う第2のメッセージを前記基地局装置から受信する受信部と、前記基地局装置との通信に係るパラメータに基づいて、前記第1のメッセージに含まれる上り共有チャネルのトランスポートブロックサイズを決定する制御部とを有するユーザ装置が提供される。
以上、本発明の実施の形態を説明してきたが、開示される発明はそのような実施形態に限定されず、当業者は様々な変形例、修正例、代替例、置換例等を理解するであろう。発明の理解を促すため具体的な数値例を用いて説明がなされたが、特に断りのない限り、それらの数値は単なる一例に過ぎず適切な如何なる値が使用されてもよい。上記の説明における項目の区分けは本発明に本質的ではなく、2以上の項目に記載された事項が必要に応じて組み合わせて使用されてよいし、ある項目に記載された事項が、別の項目に記載された事項に(矛盾しない限り)適用されてよい。機能ブロック図における機能部又は処理部の境界は必ずしも物理的な部品の境界に対応するとは限らない。複数の機能部の動作が物理的には1つの部品で行われてもよいし、あるいは1つの機能部の動作が物理的には複数の部品により行われてもよい。実施の形態で述べた処理手順については、矛盾の無い限り処理の順序を入れ替えてもよい。処理説明の便宜上、基地局装置10及びユーザ装置20は機能的なブロック図を用いて説明されたが、そのような装置はハードウェアで、ソフトウェアで又はそれらの組み合わせで実現されてもよい。本発明の実施の形態に従って基地局装置10が有するプロセッサにより動作するソフトウェア及び本発明の実施の形態に従ってユーザ装置20が有するプロセッサにより動作するソフトウェアはそれぞれ、ランダムアクセスメモリ(RAM)、フラッシュメモリ、読み取り専用メモリ(ROM)、EPROM、EEPROM、レジスタ、ハードディスク(HDD)、リムーバブルディスク、CD-ROM、データベース、サーバその他の適切な如何なる記憶媒体に保存されてもよい。
110 送信部
120 受信部
130 設定部
140 制御部
20 ユーザ装置
210 送信部
220 受信部
230 設定部
240 制御部
1001 プロセッサ
1002 記憶装置
1003 補助記憶装置
1004 通信装置
1005 入力装置
1006 出力装置
Claims (6)
- 2ステップランダムアクセス手順におけるランダムアクセスプリアンブルを含む第1のメッセージを基地局装置に送信する送信部と、
2ステップランダムアクセス手順における衝突解決を行う第2のメッセージを前記基地局装置から受信する受信部と、
前記基地局装置との通信に係るパラメータに基づいて、前記第1のメッセージに含まれる上り共有チャネルのトランスポートブロックサイズを決定する制御部とを有するユーザ装置。 - 前記基地局装置との通信に係るパラメータは、下りリンク無線品質、上りリンク送信電力、変調に係る情報、符号化に係る情報、MIMO(Multiple-Input and Multiple-Output)に関するパラメータ、送信するデータサイズ及びQoSに関するパラメータのうち少なくとも1つを含む請求項1記載のユーザ装置。
- 前記第1のメッセージを再送するとき又は前記上り共有チャネルを4ステップランダムアクセス手順で再送するとき、直前の前記第1のメッセージを送信するとき使用したトランスポートブロックサイズよりも小さいトランスポートブロックサイズを使用する請求項1記載のユーザ装置。
- 前記受信部は、前記上り共有チャネルのトランスポートブロックサイズの複数の候補及び各前記候補に関連付けられる下りリンク無線品質の閾値情報を受信し、
前記制御部は、前記基地局装置から送信される下りリンク参照信号の測定結果及び前記下りリンク無線品質の閾値情報に基づいて、前記複数の候補からトランスポートブロックサイズを選択する請求項1記載のユーザ装置。 - 前記制御部は、使用する前記上り共有チャネルのトランスポートブロックサイズに基づいて、前記ランダムアクセスプリアンブルのプリアンブルID(Identifier)、前記ランダムアクセスプリアンブルを送信するRACH(Random Access Channel)機会、前記上り共有チャネルが配置されるリソース又は前記上り共有チャネルに配置されるDMRS(Demodulation reference signal)を決定する請求項1記載のユーザ装置。
- 2ステップランダムアクセス手順におけるランダムアクセスプリアンブルを含む第1のメッセージをユーザ装置から受信する受信部と、
2ステップランダムアクセス手順における衝突解決を行う第2のメッセージを前記ユーザ装置に送信する送信部と、
前記ランダムアクセスプリアンブルのプリアンブルID(Identifier)、前記ランダムアクセスプリアンブルを送信するRACH(Random Access Channel)機会、前記第1のメッセージに含まれる上り共有チャネルが配置されるリソース又は前記第1のメッセージに含まれる上り共有チャネルに配置されるDMRS(Demodulation reference signal)に基づいて、前記第1のメッセージに含まれる上り共有チャネルのトランスポートブロックサイズを決定する制御部とを有する基地局装置。
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8130667B2 (en) * | 2008-09-19 | 2012-03-06 | Texas Instruments Incorporated | Preamble group selection in random access of wireless networks |
EP3117683B1 (en) * | 2014-03-11 | 2019-04-03 | LG Electronics Inc. | Method for allocating a temporary identifier to a terminal in a random access procedure in wireless communication system and apparatus therefor |
JP6779212B2 (ja) * | 2015-08-13 | 2020-11-04 | 株式会社Nttドコモ | ユーザ端末、無線基地局及び無線通信方法 |
WO2017150601A1 (ja) * | 2016-03-04 | 2017-09-08 | 株式会社Nttドコモ | ユーザ装置、及びランダムアクセス方法 |
BR112019001471A2 (pt) * | 2016-09-28 | 2019-05-07 | Sony Corporation | unidade de transmissão/recepção sem fio, e, método de transmissão de dados |
JP2020047964A (ja) * | 2017-01-20 | 2020-03-26 | シャープ株式会社 | 端末装置、基地局装置、通信方法、および、集積回路 |
CN110393000B (zh) * | 2017-02-20 | 2022-04-08 | Lg电子株式会社 | 用于在无线通信***中发送或接收信号的方法及其设备 |
EP3603301A1 (en) * | 2017-03-22 | 2020-02-05 | Comcast Cable Communications, LLC | Random access process in new radio |
WO2019030723A1 (en) * | 2017-08-11 | 2019-02-14 | Telefonaktiebolaget Lm Ericsson (Publ) | EARLY MESSAGE DATA RETRANSMISSION 3 |
US11039477B2 (en) * | 2017-11-17 | 2021-06-15 | Mediatek Inc. | NB-IoT PRACH resource partitioning and multiple grants in RAR for EDT |
TWI691227B (zh) * | 2017-12-13 | 2020-04-11 | 華碩電腦股份有限公司 | 無線通訊系統中在隨機存取過程期間處理bwp非活動中計時器的方法和設備 |
BR112020022928A2 (pt) * | 2018-05-10 | 2021-02-02 | Beijing Xiaomi Mobile Software Co., Ltd. | métodos, aparelhos e sistemas para transmitir dados e meio de armazenamento |
EP3811693A4 (en) * | 2018-06-21 | 2022-01-19 | Nokia Technologies OY | TRANSPORT BLOCK SIZE FOR CONTENTION-FREE RANDOM ACCESS IN A RANDOM ACCESS PROCEDURE |
CN110708764B (zh) * | 2018-07-09 | 2022-01-25 | 维沃移动通信有限公司 | 一种信息传输方法、网络设备及终端 |
EP4195853A1 (en) * | 2018-09-27 | 2023-06-14 | ZTE Corporation | Methods, apparatus and systems for performing a random access procedure in a wireless communication |
KR20210134625A (ko) * | 2019-02-13 | 2021-11-10 | 아이디에이씨 홀딩스, 인크. | 2단계 rach에서 msg-a 전송을 위한 방법 및 장치 |
EP3925267A4 (en) * | 2019-02-14 | 2022-09-28 | Sierra Wireless, Inc. | METHOD AND APPARATUS FOR SUPPORTING THE USE OF A TWO-STAGE RANDOM ACCESS CHANNEL IN A WIRELESS COMMUNICATION SYSTEM |
WO2020165498A1 (en) * | 2019-02-15 | 2020-08-20 | Nokia Technologies Oy | Structure of message from user equipment to base station in two-step random access |
US20200288506A1 (en) * | 2019-02-15 | 2020-09-10 | Qualcomm Incorporated | Techniques for supporting co-existence between 2-step random access and 4-step random access |
US20220104276A1 (en) * | 2019-02-15 | 2022-03-31 | Lg Electronics Inc. | Method for transmitting or receiving physical uplink shared channel for random access in wireless communication system and apparatus therefor |
WO2020201142A1 (en) * | 2019-03-29 | 2020-10-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for physical uplink shared channel format adaptation |
US11412550B2 (en) * | 2019-05-02 | 2022-08-09 | Ofinno, Llc | Random access response reception for a two-step random access procedure |
US20220225436A1 (en) * | 2019-05-03 | 2022-07-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for random access |
-
2019
- 2019-05-02 JP JP2021517150A patent/JP7305756B2/ja active Active
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Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017163519A (ja) * | 2016-03-04 | 2017-09-14 | 株式会社Nttドコモ | ユーザ装置、及びランダムアクセス方法 |
Non-Patent Citations (3)
Title |
---|
See also references of EP3965516A4 * |
VIVO: "RAN2 impacts of 2-step RACH", 3GPP TSG RAN WG2 #104 R2-1818260, 2 November 2018 (2018-11-02), XP051482133, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg_ran/WG2_RL2/TSGR2_104/Docs/R2-1818260.zip> * |
ZTE ET AL.: "Considerations on 2-Step RACH Procedures", 3GPP TSG RAN WG1 #96 R1-1901627, 16 February 2019 (2019-02-16), XP009108222, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_96/Docs/R1-1901627.zip> * |
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