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WO2021081780A1 - Appareil et procédé pouvant servir pour une unité de données par paquets de contrôle d'accès au support - Google Patents

Appareil et procédé pouvant servir pour une unité de données par paquets de contrôle d'accès au support Download PDF

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Publication number
WO2021081780A1
WO2021081780A1 PCT/CN2019/114132 CN2019114132W WO2021081780A1 WO 2021081780 A1 WO2021081780 A1 WO 2021081780A1 CN 2019114132 W CN2019114132 W CN 2019114132W WO 2021081780 A1 WO2021081780 A1 WO 2021081780A1
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Prior art keywords
field
mac
size
subheader
bits
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PCT/CN2019/114132
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English (en)
Inventor
Xue LIN
Cong SHI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Priority to PCT/CN2019/114132 priority Critical patent/WO2021081780A1/fr
Publication of WO2021081780A1 publication Critical patent/WO2021081780A1/fr
Anticipated expiration legal-status Critical
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present disclosure relates to the field of communication systems, and more particularly, to an apparatus and a method operable for medium access control packet data unit (MAC PDU) .
  • MAC PDU medium access control packet data unit
  • Data are generally transmitted between a user equipment (UE) and a network node through a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, a medium access control (MAC) layer, and a physical (PHY) layer, each of which processes the data differently.
  • the PDCP layer generally functions to perform security-related operations, and header compression and decompression, etc.
  • the RLC layer generally functions to segment the data, to concatenate the data segments, to deliver the data segments in sequence, to perform automatic repeat-request (ARQ) operations, etc.
  • the MAC layer generally functions to schedule PHY-layer resources in an uplink or a downlink.
  • the PHY layer generally packages a transport block, transmits the packet via an air interface.
  • LTE long term evolution
  • WCDMA wideband code division multiple access
  • MAC PDU medium access control packet data unit
  • An object of the present disclosure is to propose an apparatus and a method operable for medium access control packet data unit (MAC PDU) , which can provide at least one of the following benefits: solving issues of the prior art, providing better communication, or improving reliability.
  • MAC PDU medium access control packet data unit
  • a user equipment operable for medium access control packet data unit includes a memory, a transceiver, and a processor coupled to the memory and the transceiver.
  • the processor is configured to control the transceiver to receive a radio resource allocation from a network node and configure a MAC PDU associated with the radio resource allocation, wherein the MAC PDU includes one or more MAC subPDUs, and each MAC subPDU includes one of the following: a MAC subheader with a backoff indicator only, a MAC subheader with a random access preamble identifier (RAPID) and a MAC fallback random access response (RAR) , a MAC subheader without the RAPID and a MAC success RAR, a MAC subheader and a MAC service data unit (SDU) carrying a radio resource control (RRC) message, or a MAC subheader and a padding.
  • RAPID random access preamble identifier
  • RAR MAC fallback random access
  • a method operable for medium access control packet data unit (MAC PDU) of a user equipment includes receiving a radio resource allocation from a network node and configuring a MAC PDU associated with the radio resource allocation, wherein the MAC PDU includes one or more MAC subPDUs, and each MAC subPDU includes one of the following: a MAC subheader with a backoff indicator only, a MAC subheader with a random access preamble identifier (RAPID) and a MAC fallback random access response (RAR) , a MAC subheader without the RAPID and a MAC success RAR, a MAC subheader and a MAC service data unit (SDU) carrying a radio resource control (RRC) message, or a MAC subheader and a padding.
  • RAPID random access preamble identifier
  • RAR MAC fallback random access response
  • a network node operable for medium access control packet data unit includes a memory, a transceiver, and a processor coupled to the memory and the transceiver.
  • the processor is configured to control the transceiver to transmit, to a user equipment, a radio resource allocation and be configured a MAC PDU associated with the radio resource allocation from the user equipment, wherein the MAC PDU includes one or more MAC subPDUs, and each MAC subPDU includes one of the following: a MAC subheader with a backoff indicator only, a MAC subheader with a random access preamble identifier (RAPID) and a MAC fallback random access response (RAR) , a MAC subheader without the RAPID and a MAC success RAR, a MAC subheader and a MAC service data unit (SDU) carrying a radio resource control (RRC) message, or a MAC subheader and a padding.
  • RAPID random access preamble identifier
  • a method operable for medium access control packet data unit (MAC PDU) of a network node includes transmitting, to a user equipment, a radio resource allocation and being configured a MAC PDU associated with the radio resource allocation from the user equipment, wherein the MAC PDU includes one or more MAC subPDUs, and each MAC subPDU includes one of the following: a MAC subheader with a backoff indicator only, a MAC subheader with a random access preamble identifier (RAPID) and a MAC fallback random access response (RAR) , a MAC subheader without the RAPID and a MAC success RAR, a MAC subheader and a MAC service data unit (SDU) carrying a radio resource control (RRC) message, or a MAC subheader and a padding.
  • RAPID random access preamble identifier
  • RAR MAC fallback random access response
  • a non-transitory machine-readable storage medium has stored thereon instructions that, when executed by a computer, cause the computer to perform the above method.
  • a chip includes a processor, configured to call and run a computer program stored in a memory, to cause a device in which the chip is installed to execute the above method.
  • a computer readable storage medium in which a computer program is stored, causes a computer to execute the above method.
  • a computer program product includes a computer program, and the computer program causes a computer to execute the above method.
  • a computer program causes a computer to execute the above method.
  • FIG. 1 is a block diagram of a user equipment and a network node operable for medium access control packet data unit (MAC PDU) according to an embodiment of the present disclosure.
  • MAC PDU medium access control packet data unit
  • FIG. 2 is a flowchart illustrating a method operable for medium access control packet data unit (MAC PDU) of a user equipment according to an embodiment of the present disclosure.
  • MAC PDU medium access control packet data unit
  • FIG. 3 is a flowchart illustrating a method operable for medium access control packet data unit (MAC PDU) of a network node according to an embodiment of the present disclosure.
  • MAC PDU medium access control packet data unit
  • FIG. 4 is a schematic diagram of an exemplary illustration of a MAC subheader with a backoff indicator according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of an exemplary illustration of a MAC subheader with a random access preamble identifier (RAPID) for a MAC fallback RAR according to an embodiment of the present disclosure.
  • RAPID random access preamble identifier
  • FIG. 6 is a schematic diagram of an exemplary illustration of a MAC subheader without a RAPID for a MAC success RAR according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of an exemplary illustration of a MAC subheader for padding according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of an exemplary illustration of a MAC PDU according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of an exemplary illustration of a MAC fallback random access response (RAR) according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of an exemplary illustration of a MAC success RAR according to an embodiment of the present disclosure.
  • FIG. 11 is a block diagram of a system for wireless communication according to an embodiment of the present disclosure.
  • FIG. 1 illustrates that, in some embodiments, a user equipment (UE) 10 and a network node 20 such as a gNB operable for medium access control packet data unit (MAC PDU) according to an embodiment of the present disclosure are provided.
  • the MAC PDU is for MSGB.
  • the UE 10 may include a processor 11, a memory 12, and a transceiver 13.
  • the network node 20 may include a processor 21, a memory 22, and a transceiver 23.
  • the processor 11 or 21 may be configured to implement proposed functions, procedures and/or methods described in this description. Layers of radio interface protocol may be implemented in the processor 11 or 21.
  • the memory 12 or 22 is operatively coupled with the processor 11 or 21 and stores a variety of information to operate the processor 11 or 21.
  • the transceiver 13 or 23 is operatively coupled with the processor 11 or 21, and the transceiver 13 or 23 transmits and/or receives a radio signal.
  • the processor 11 or 21 may include an application-specific integrated circuit (ASIC) , other chipsets, logic circuit and/or data processing devices.
  • the memory 12 or 22 may include a read-only memory (ROM) , a random access memory (RAM) , a flash memory, a memory card, a storage medium and/or other storage devices.
  • the transceiver 13 or 23 may include baseband circuitry to process radio frequency signals.
  • modules e.g., procedures, functions, and so on
  • the modules can be stored in the memory 12 or 22 and executed by the processor 11 or 21.
  • the memory 12 or 22 can be implemented within the processor 11 or 21 or external to the processor 11 or 21, in which those can be communicatively coupled to the processor 11 or 21 via various means are known in the art.
  • the processor 11 is configured to control the transceiver 13 to receive a radio resource allocation from the network node 20 and configure a MAC PDU associated with the radio resource allocation, wherein the MAC PDU includes one or more MAC subPDUs, and each MAC subPDU includes one of the following: a MAC subheader with a backoff indicator only, a MAC subheader with a random access preamble identifier (RAPID) and a MAC fallback random access response (RAR) , a MAC subheader without the RAPID and a MAC success RAR, a MAC subheader and a MAC service data unit (SDU) carrying a radio resource control (RRC) message, or a MAC subheader and a padding.
  • RAPID random access preamble identifier
  • RAR MAC fallback random access response
  • SDU MAC service data unit carrying a radio resource control (RRC) message
  • RRC radio resource control
  • the processor 21 is configured to control the transceiver 23 to transmit, to the user equipment 10, a radio resource allocation and be configured a MAC PDU associated with the radio resource allocation from the user equipment 10, wherein the MAC PDU includes one or more MAC subPDUs, and each MAC subPDU includes one of the following: a MAC subheader with a backoff indicator only, a MAC subheader with a random access preamble identifier (RAPID) and a MAC fallback random access response (RAR) , a MAC subheader without the RAPID and a MAC success RAR, a MAC subheader and a MAC service data unit (SDU) carrying a radio resource control (RRC) message, or a MAC subheader and a padding.
  • RAPID random access preamble identifier
  • RAR MAC fallback random access response
  • SDU MAC service data unit carrying a radio resource control (RRC) message
  • RRC radio resource control
  • At least one of the MAC subheader, the MAC fallback RAR, and the MAC success RAR is octet aligned. In some embodiments, at least one of the following is provided: the MAC subPDU with the backoff indicator only are placed at a beginning of the MAC PDU, the MAC subPDU with the MAC fallback RAR are placed together, the MAC subPDU with the MAC success RAR are placed together, the MAC subPDU with the MAC SDU carrying the RRC message are placed together, the MAC subPDU with the fallback RAR are placed after all the MAC subPDUs with the MAC success RARs, the MAC subPDU with the fallback RAR and the MAC subPDU with the success RAR are placed between the MAC subPDU with the backoff indicator only and the padding, all the MAC subPDUs with the MAC SDUs carrying the RRC messages are placed after one of the MAC subPDUs with the MAC success RARs, or the
  • the MAC subheader with the backoff indicator only consists of four header fields, T, R, R, and BI, where the T field means a type field, the R field means a reserved bit, and the BI field means a backoff indicator field.
  • the MAC subheader with the RAPID for the MAC fallback RAR consists of two header fields, T and RAPID, where the T field means a type field.
  • the MAC subheader without the RAPID for the MAC success RAR consists of six header fields, T, R, R, R, R, and E, where the T field means a type field, the R field means a reserved bit, and the E field means an extension field.
  • presence and a length of the padding are implicit based on a transport block (TB) size and a size of MAC subPDU, a size of the padding is zero, or the MAC subheader for the padding consists of two header fields, T and R, where the T field means a type field and the R field means a reserved bit.
  • TB transport block
  • R reserved bit
  • the MAC subheader consists of the following fields, T, E, R, BI, and RAPID, where the T field means a type field, the E field means an extension field, the R field means a reserved bit, the R field is set to 0, and the BI field means a backoff indicator field.
  • the T field is a flag indicating four types of the MAC subPDU, and a size of the T field is 2 bits.
  • the T field indicates presence of the BI field in the subheader
  • the T field indicates presence of the RAPID field in the subheader which follows by the MAC fallback RAR
  • the T field indicates presence of the E field in the subheader which follows by the MAC success RAR
  • the T field indicates presence of the padding.
  • the E field indicates a number of the MAC subPDU carrying the RRC message following the MAC subPDU with the MAC success RAR, and a size of the E field is 2 bits.
  • the BI field identifies an overload condition in a cell, and a size of the BI field is 4 bits.
  • the RAPID field identifies a transmitted random access preamble, and a size of the RAPID field is 6 bits.
  • the fallback RAR is of a fixed size and consists of the following fields, R, timing advance command, UL grant, and temporary C-RNTI, where the R field means a reserved bit, the R field is set to 0, the UL grant field means an uplink grant field, the temporary C-RNTI field means a temporary cell radio network temporary identifier field.
  • the timing advance command indicates an index value timing advance (TA) used to control an amount of timing adjustment that is used by a MAC entity, and a size of the timing advance command field is 12 bits.
  • TA timing advance
  • the UL grant field indicates resources to be used on an uplink, and a size of the UL grant field is 27 bits.
  • the temporary C-RNTI field indicates a temporary identity that is used by a MAC entity during random access, and a size of the temporary C-RNTI field is 16 bits.
  • the success RAR is of a fixed size and consists of the following fields, contention resolution identity, R, TPC, timing advance command, and C-RNTI, where the R field means a reserved bit, and the R field is set to 0.
  • the contention resolution identity field contains an uplink (UL) common control channel (CCCH) SDU, and a size of the contention resolution identity field is 48 bits. In some embodiments, if the UL CCCH SDU is longer than 48 bits, the contention resolution identity field contains the first 48 bits of the UL CCCH SDU.
  • the TPC filed indicates a transmit power control (TPC) command of the PUCCH resource containing a hybrid automatic repeat request (HARQ) feedback for MSGB, and a size of the TPC field is 2 bits.
  • the timing advance command field indicates an index value TA used to control an amount of timing adjustment that is used by a MAC entity, and a size of the timing advance command field is 12 bits.
  • the C-RNTI field indicates a unique user equipment identification used as an identifier of an RRC connection and for scheduling, and a size of the C-RNTI field is 16 bits.
  • FIG. 2 illustrates a method 200 operable for medium access control packet data unit (MAC PDU) of a user equipment according to an embodiment of the present disclosure.
  • the method 200 includes: a block 202, receiving a radio resource allocation from a network node, and a block 204, configuring a MAC PDU associated with the radio resource allocation, wherein the MAC PDU includes one or more MAC subPDUs, and each MAC subPDU includes one of the following: a MAC subheader with a backoff indicator only, a MAC subheader with a random access preamble identifier (RAPID) and a MAC fallback random access response (RAR) , a MAC subheader without the RAPID and a MAC success RAR, a MAC subheader and a MAC service data unit (SDU) carrying a radio resource control (RRC) message, or a MAC subheader and a padding.
  • RAPID random access preamble identifier
  • RAR MAC
  • FIG. 3 illustrates a method 300 operable for medium access control packet data unit (MAC PDU) of a network node according to an embodiment of the present disclosure.
  • the method 300 includes: a block 302, transmitting, to a user equipment, a radio resource allocation, and a block 304, being configured a MAC PDU associated with the radio resource allocation from the user equipment, wherein the MAC PDU includes one or more MAC subPDUs, and each MAC subPDU includes one of the following: a MAC subheader with a backoff indicator only, a MAC subheader with a random access preamble identifier (RAPID) and a MAC fallback random access response (RAR) , a MAC subheader without the RAPID and a MAC success RAR, a MAC subheader and a MAC service data unit (SDU) carrying a radio resource control (RRC) message, or a MAC subheader and a padding.
  • RAPID random access preamble identifier
  • At least one of the MAC subheader, the MAC fallback RAR, and the MAC success RAR is octet aligned. In some embodiments, at least one of the following is provided: the MAC subPDU with the backoff indicator only are placed at a beginning of the MAC PDU, the MAC subPDU with the MAC fallback RAR are placed together, the MAC subPDU with the MAC success RAR are placed together, the MAC subPDU with the MAC SDU carrying the RRC message are placed together, the MAC subPDU with the fallback RAR are placed after all the MAC subPDUs with the MAC success RARs, the MAC subPDU with the fallback RAR and the MAC subPDU with the success RAR are placed between the MAC subPDU with the backoff indicator only and the padding, all the MAC subPDUs with the MAC SDUs carrying the RRC messages are placed after one of the MAC subPDUs with the MAC success RARs, or the
  • the MAC subheader with the backoff indicator only consists of four header fields, T, R, R, and BI, where the T field means a type field, the R field means a reserved bit, and the BI field means a backoff indicator field.
  • the MAC subheader with the RAPID for the MAC fallback RAR consists of two header fields, T and RAPID, where the T field means a type field.
  • the MAC subheader without the RAPID for the MAC success RAR consists of six header fields, T, R, R, R, R, and E, where the T field means a type field, the R field means a reserved bit, and the E field means an extension field.
  • presence and a length of the padding are implicit based on a transport block (TB) size and a size of MAC subPDU, a size of the padding is zero, or the MAC subheader for the padding consists of two header fields, T and R, where the T field means a type field and the R field means a reserved bit.
  • TB transport block
  • R reserved bit
  • the MAC subheader consists of the following fields, T, E, R, BI, and RAPID, where the T field means a type field, the E field means an extension field, the R field means a reserved bit, the R field is set to 0, and the BI field means a backoff indicator field.
  • the T field is a flag indicating four types of the MAC subPDU, and a size of the T field is 2 bits.
  • the T field indicates presence of the BI field in the subheader
  • the T field indicates presence of the RAPID field in the subheader which follows by the MAC fallback RAR
  • the T field indicates presence of the E field in the subheader which follows by the MAC success RAR
  • the T field indicates presence of the padding.
  • the E field indicates a number of the MAC subPDU carrying the RRC message following the MAC subPDU with the MAC success RAR, and a size of the E field is 2 bits.
  • the BI field identifies an overload condition in a cell, and a size of the BI field is 4 bits.
  • the RAPID field identifies a transmitted random access preamble, and a size of the RAPID field is 6 bits.
  • the fallback RAR is of a fixed size and consists of the following fields, R, timing advance command, UL grant, and temporary C-RNTI, where the R field means a reserved bit, the R field is set to 0, the UL grant field means an uplink grant field, the temporary C-RNTI field means a temporary cell radio network temporary identifier field.
  • the timing advance command indicates an index value timing advance (TA) used to control an amount of timing adjustment that is used by a MAC entity, and a size of the timing advance command field is 12 bits.
  • TA timing advance
  • the UL grant field indicates resources to be used on an uplink, and a size of the UL grant field is 27 bits.
  • the temporary C-RNTI field indicates a temporary identity that is used by a MAC entity during random access, and a size of the temporary C-RNTI field is 16 bits.
  • the success RAR is of a fixed size and consists of the following fields, contention resolution identity, R, TPC, timing advance command, and C-RNTI, where the R field means a reserved bit, and the R field is set to 0.
  • the contention resolution identity field contains an uplink (UL) common control channel (CCCH) SDU, and a size of the contention resolution identity field is 48 bits.
  • the contention resolution identity field contains the first 48 bits of the UL CCCH SDU.
  • the TPC filed indicates the TPC command of the PUCCH resource containing HARQ feedback for MSGB, and a size of the TPC field is 2 bits.
  • the timing advance command field indicates an index value TA used to control an amount of timing adjustment that is used by a MAC entity, and a size of the timing advance command field is 12 bits.
  • the C-RNTI field indicates a unique user equipment identification used as an identifier of an RRC connection and for scheduling, and a size of the C-RNTI field is 16 bits.
  • a MAC PDU for MSGB consists of one or more MAC subPDUs and optionally padding.
  • Each MAC subPDU consists one of the following: a MAC subheader with a backoff indicator only, a MAC subheader with a RAPID and a MAC fallback RAR, a MAC subheader without a RAPID and a MAC success RAR, a MAC subheader and a MAC SDU carrying an RRC message, or a MAC subheader and padding.
  • FIG. 4 is an exemplary illustration of a MAC subheader with a backoff indicator according to an embodiment of the present disclosure.
  • FIG. 4 illustrates that, in some embodiments, a MAC subheader with a backoff indicator consists of four header fields T/R/R/BI.
  • a MAC subPDU with the backoff indicator only is placed at the beginning of the MSGB MAC PDU, if included.
  • MAC subPDU (s) with the MAC fallback RAR are placed together.
  • MAC subPDU (s) with the MAC success RAR are placed together.
  • MAC subPDU (s) with the MAC SDU carrying the RRC message are placed together.
  • MAC subPDU (s) with the fallback RAR are placed after all the MAC subPDU (s) with the MAC success RAR.
  • MAC subPDU (s) with the fallback RAR and the MAC subPDU (s) with the success RAR are placed between the MAC subPDU with the backoff indicator only (if any) and padding (if any) . All the MAC subPDU (s) with the MAC SDU carrying the RRC message (if any) can be placed after one of the MAC subPDU (s) with the MAC success RAR.
  • FIG. 5 is an exemplary illustration of a MAC subheader with a random access preamble identifier (RAPID) for a MAC fallback RAR according to an embodiment of the present disclosure.
  • RAPID random access preamble identifier
  • FIG. 5 illustrates that, in some embodiments, a MAC subheader with a RAPID for a MAC fallback RAR consists of two header fields T/RAPID.
  • FIG. 6 is an exemplary illustration of a MAC subheader without a RAPID for a MAC success RAR according to an embodiment of the present disclosure.
  • FIG. 6 illustrates that, in some embodiments, a MAC subheader without a RAPID for a MAC success RAR consists of six header fields T/R/R/R/R/E.
  • FIG. 7 is an exemplary illustration of a MAC subheader for padding according to an embodiment of the present disclosure.
  • a MAC subheader for padding consists of two header fields T/R.
  • padding is placed at the end of the MAC PDU if present. Presence and length of the padding are implicit based on a TB size, a size of the MAC subPDU (s) . A size of padding can be zero.
  • FIG. 8 is an exemplary illustration of a MAC PDU according to an embodiment of the present disclosure.
  • FIG. 8 illustrates that, in some embodiments, a MAC subheader consists of the following fields:
  • T a type field is a flag indicating four types of MAC subPDU.
  • a size of the T field is 2 bits.
  • the T field is set to "00" to indicate presence of a backoff indicator field in the subheader (BI) .
  • the T field is set to "01" to indicate presence of a random access preamble identifier field in the subheader (RAPID) which follows by a MAC fallback RAR.
  • RAPID random access preamble identifier field in the subheader
  • the T field is set to "10” to indicate presence of an E field in the subheader which follows by a MAC success RAR.
  • the T field is set to "11" to indicate presence of padding.
  • an extension field indicates a number of MAC subPDU (s) carrying an RRC message following the MAC subPDU with the MAC success RAR.
  • a size of the E field is 2 bits.
  • R reserved bit, set to "0" .
  • BI a backoff indicator field identifies an overload condition in a cell.
  • a size of the BI field is 4 bits.
  • RAPID a random access preamble identifier field identifies a transmitted random access preamble.
  • a size of the RAPID field is 6 bits.
  • FIG. 8 illustrates that, in some embodiments, the MAC subheader is octet aligned.
  • FIG. 9 is an exemplary illustration of a MAC fallback random access response (RAR) according to an embodiment of the present disclosure.
  • RAR MAC fallback random access response
  • R a reserved bit, set to "0" .
  • Timing Advance Command indicates an index value TA used to control an amount of timing adjustment that a MAC entity can apply in TS 38.213.
  • a size of the timing advance command field is 12 bits.
  • the uplink grant field indicates resources to be used on an uplink in TS 38.213.
  • a size of the UL grant field is 27 bits.
  • the temporary C-RNTI field indicates a temporary identity that is used by the MAC entity during random access.
  • a size of the temporary C-RNTI field is 16 bits.
  • FIG. 8 and FIG. 9 illustrate that, in some embodiments, the MAC fallback RAR and the MAC success RAR are octet aligned.
  • FIG. 10 is an exemplary illustration of a MAC success RAR according to an embodiment of the present disclosure.
  • FIG. 10 illustrates that, in some embodiments, a success RAR is of fixed size and consists of the following fields:
  • the contention resolution identity field contains UL CCCH SDU.
  • a size of the contention resolution identity field is 48 bits. If the UL CCCH SDU is longer than 48 bits, this field contains the first 48 bits of the UL CCCH SDU.
  • R Reserved bit, set to "0" .
  • the TPC filed indicates a transmit power control (TPC) command of the PUCCH resource containing a hybrid automatic repeat request (HARQ) feedback for MSGB, and a size of the TPC field is 2 bits.
  • TPC transmit power control
  • HARQ hybrid automatic repeat request
  • Timing Advance Command indicates an index value TA used to control an amount of timing adjustment that a MAC entity can apply in TS 38.213.
  • a size of the timing advance command field is 12 bits;
  • the C-RNTI field indicates a unique UE identification used as an identifier of an RRC connection and for scheduling.
  • a size of the C-RNTI field is 16 bits.
  • Some embodiments of the present disclosure are used by 5G-NR chipset vendors, communication system development vendors, automakers including cars, trains, trucks, buses, bicycles, moto-bikes, helmets, and etc., drones (unmanned aerial vehicles) , smartphone makers, communication devices for public safety use, AR/VR device maker for example gaming, conference/seminar, education purposes.
  • 5G-NR chipset vendors communication system development vendors
  • automakers including cars, trains, trucks, buses, bicycles, moto-bikes, helmets, and etc.
  • drones unmanned aerial vehicles
  • smartphone makers communication devices for public safety use
  • AR/VR device maker for example gaming, conference/seminar, education purposes.
  • Some embodiments of the present disclosure are a combination of “techniques/processes” that can be adopted in 3GPP specification to create an end product.
  • FIG. 11 is a block diagram of an example system 700 for wireless communication according to an embodiment of the present disclosure. Embodiments described herein may be implemented into the system using any suitably configured hardware and/or software.
  • FIG. 11 illustrates the system 700 including a radio frequency (RF) circuitry 710, a baseband circuitry 720, an application circuitry 730, a memory/storage 740, a display 750, a camera 760, a sensor 770, and an input/output (I/O) interface 780, coupled with each other at least as illustrated.
  • RF radio frequency
  • the application circuitry 730 may include a circuitry such as, but not limited to, one or more single-core or multi-core processors.
  • the processors may include any combination of general-purpose processors and dedicated processors, such as graphics processors, application processors.
  • the processors may be coupled with the memory/storage and configured to execute instructions stored in the memory/storage to enable various applications and/or operating systems running on the system.
  • the baseband circuitry 720 may include circuitry such as, but not limited to, one or more single-core or multi-core processors.
  • the processors may include a baseband processor.
  • the baseband circuitry may handle various radio control functions that enables communication with one or more radio networks via the RF circuitry.
  • the radio control functions may include, but are not limited to, signal modulation, encoding, decoding, radio frequency shifting, etc.
  • the baseband circuitry may provide for communication compatible with one or more radio technologies.
  • the baseband circuitry may support communication with an evolved universal terrestrial radio access network (EUTRAN) and/or other wireless metropolitan area networks (WMAN) , a wireless local area network (WLAN) , a wireless personal area network (WPAN) .
  • EUTRAN evolved universal terrestrial radio access network
  • WMAN wireless metropolitan area networks
  • WLAN wireless local area network
  • WPAN wireless personal area network
  • Embodiments in which the baseband circuitry is configured to support radio communications of more than one wireless protocol may be referred to as
  • the baseband circuitry 720 may include circuitry to operate with signals that are not strictly considered as being in a baseband frequency.
  • baseband circuitry may include circuitry to operate with signals having an intermediate frequency, which is between a baseband frequency and a radio frequency.
  • the RF circuitry 710 may enable communication with wireless networks using modulated electromagnetic radiation through a non-solid medium.
  • the RF circuitry may include switches, filters, amplifiers, etc. to facilitate the communication with the wireless network.
  • the RF circuitry 710 may include circuitry to operate with signals that are not strictly considered as being in a radio frequency.
  • RF circuitry may include circuitry to operate with signals having an intermediate frequency, which is between a baseband frequency and a radio frequency.
  • the transmitter circuitry, control circuitry, or receiver circuitry discussed above with respect to the user equipment, eNB, or gNB may be embodied in whole or in part in one or more of the RF circuitry, the baseband circuitry, and/or the application circuitry.
  • “circuitry” may refer to, be part of, or include an Application Specific Integrated Circuit (ASIC) , an electronic circuit, a processor (shared, dedicated, or group) , and/or a memory (shared, dedicated, or group) that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable hardware components that provide the described functionality.
  • ASIC Application Specific Integrated Circuit
  • the electronic device circuitry may be implemented in, or functions associated with the circuitry may be implemented by, one or more software or firmware modules.
  • some or all of the constituent components of the baseband circuitry, the application circuitry, and/or the memory/storage may be implemented together on a system on a chip (SOC) .
  • SOC system on a chip
  • the memory/storage 740 may be used to load and store data and/or instructions, for example, for system.
  • the memory/storage for one embodiment may include any combination of suitable volatile memory, such as dynamic random access memory (DRAM) ) , and/or non-volatile memory, such as flash memory.
  • DRAM dynamic random access memory
  • flash memory non-volatile memory
  • the I/O interface 780 may include one or more user interfaces designed to enable user interaction with the system and/or peripheral component interfaces designed to enable peripheral component interaction with the system.
  • User interfaces may include, but are not limited to a physical keyboard or keypad, a touchpad, a speaker, a microphone, etc.
  • Peripheral component interfaces may include, but are not limited to, a non-volatile memory port, a universal serial bus (USB) port, an audio jack, and a power supply interface.
  • USB universal serial bus
  • the sensor 770 may include one or more sensing devices to determine environmental conditions and/or location information related to the system.
  • the sensors may include, but are not limited to, a gyro sensor, an accelerometer, a proximity sensor, an ambient light sensor, and a positioning unit.
  • the positioning unit may also be part of, or interact with, the baseband circuitry and/or RF circuitry to communicate with components of a positioning network, e.g., a global positioning system (GPS) satellite.
  • GPS global positioning system
  • the display 750 may include a display, such as a liquid crystal display and a touch screen display.
  • the system 700 may be a mobile computing device such as, but not limited to, a laptop computing device, a tablet computing device, a netbook, an ultrabook, a smartphone, a AR/VR glasses, etc.
  • system may have more or less components, and/or different architectures.
  • methods described herein may be implemented as a computer program.
  • the computer program may be stored on a storage medium, such as a non-transitory storage medium.
  • the units as separating components for explanation are or are not physically separated.
  • the units for display are or are not physical units, that is, located in one place or distributed on a plurality of network units. Some or all of the units are used according to the purposes of the embodiments.
  • each of the functional units in each of the embodiments can be integrated in one processing unit, physically independent, or integrated in one processing unit with two or more than two units.
  • the software function unit is realized and used and sold as a product, it can be stored in a readable storage medium in a computer.
  • the technical plan proposed by the present disclosure can be essentially or partially realized as the form of a software product.
  • one part of the technical plan beneficial to the conventional technology can be realized as the form of a software product.
  • the software product in the computer is stored in a storage medium, including a plurality of commands for a computational device (such as a personal computer, a server, or a network device) to run all or some of the steps disclosed by the embodiments of the present disclosure.
  • the storage medium includes a USB disk, a mobile hard disk, a read-only memory (ROM) , a random access memory (RAM) , a floppy disk, or other kinds of media capable of storing program codes.

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

Abstract

L'invention concerne un appareil et un procédé pouvant servir pour une unité de données par paquets de contrôle d'accès au support (PDU MAC) et susceptibles de régler les problèmes de l'art antérieur, d'assurer une meilleure communication et/ou d'accroître la fiabilité. Un procédé pouvant servir pour une PDU MAC d'un équipement utilisateur comprend les étapes consistant à : recevoir une attribution de ressources radio provenant d'un nœud de réseau; et configurer une PDU MAC associée à l'attribution de ressources radio, la PDU MAC contenant une ou plusieurs sous-PDU MAC et chaque sous-PDU MAC contenant un des sous-en-têtes MAC suivants : un sous-en-tête MAC à seulement un indicateur de réduction de puissance; un sous-en-tête MAC à un identifiant de préambule d'accès aléatoire (RAPID) et une réponse d'accès aléatoire (RAR) de repli MAC; un sous-en-tête MAC sans RAPID ni RAR de réussite MAC; un sous-en-tête MAC et une unité de données de service (SDU) MAC transportant un message de commande de ressources radio (RRC); ou un sous-en-tête MAC et un remplissage.
PCT/CN2019/114132 2019-10-29 2019-10-29 Appareil et procédé pouvant servir pour une unité de données par paquets de contrôle d'accès au support Ceased WO2021081780A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170332419A1 (en) * 2016-05-12 2017-11-16 Samsung Electronics Co., Ltd. Method and apparatus for performing light connection in wireless communication system
US20180220288A1 (en) * 2017-02-02 2018-08-02 Samsung Electronics Co., Ltd. Method and apparatus for transmitting and receiving system information
CN108633103A (zh) * 2017-03-20 2018-10-09 华硕电脑股份有限公司 针对系统信息请求的随机接入程序的方法和设备
CN110049557A (zh) * 2018-01-17 2019-07-23 华为技术有限公司 随机接入方法及装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170332419A1 (en) * 2016-05-12 2017-11-16 Samsung Electronics Co., Ltd. Method and apparatus for performing light connection in wireless communication system
US20180220288A1 (en) * 2017-02-02 2018-08-02 Samsung Electronics Co., Ltd. Method and apparatus for transmitting and receiving system information
CN108633103A (zh) * 2017-03-20 2018-10-09 华硕电脑股份有限公司 针对系统信息请求的随机接入程序的方法和设备
CN110049557A (zh) * 2018-01-17 2019-07-23 华为技术有限公司 随机接入方法及装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
OPPO: "MsgB contents and formats in 2-step RACH", 3GPP DRAFT; R2-1912085 - MSGB MAC PDU FORMAT IN 2-STEP RACH, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, 3 October 2019 (2019-10-03), Chongqing, China, XP051790138 *
SAMSUNG (RAPPORTEUR): "Draft TS 38.321 v1.1.0", 3GPP DRAFT; R2-1712698 COVER PAGE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, 16 November 2017 (2017-11-16), Reno, NV, USA, XP051371049 *

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