WO2019062562A1 - 信息指示方法、用户设备及基站 - Google Patents

信息指示方法、用户设备及基站 Download PDF

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Publication number
WO2019062562A1
WO2019062562A1 PCT/CN2018/105662 CN2018105662W WO2019062562A1 WO 2019062562 A1 WO2019062562 A1 WO 2019062562A1 CN 2018105662 W CN2018105662 W CN 2018105662W WO 2019062562 A1 WO2019062562 A1 WO 2019062562A1
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mac
padding
pdu
sub
subpdu
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PCT/CN2018/105662
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English (en)
French (fr)
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谌丽
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电信科学技术研究院有限公司
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    • 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
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to an information indication method, a user equipment, and a base station.
  • a MAC RAR PDU Media Access Control Random Access Response Protocol Data Unit
  • MAC payload MAC payload
  • the size of the scheduling resource is larger than the size of the MAC header and the resources required for the MAC load, the remaining portion needs to be filled with padding bits (ie, padding).
  • the user equipment UE can obtain the MAC header and the MAC load size, and then subtract the MAC header plus the MAC payload according to the MAC RAR PDU size, that is, obtain the padding size.
  • a MAC RAR PDU Media Access Control Random Access Response Protocol Data Unit
  • MAC sub-PDUs Media Access Control Random Access Response Protocol Data Unit
  • each MAC sub-PDU has Independent indicator function.
  • the user equipment cannot determine the padding in the MAC RAR PDU. For example, if the padding is all 1, the user equipment is treated as a MAC sub-PDU and is executed according to the user equipment, which is prone to errors. And increase the power consumption of the user equipment.
  • the user equipment cannot determine the padding in the MAC RAR PDU, and the padding part in the MAC RAR PDU is subjected to unnecessary parsing, which increases the power consumption of the user equipment.
  • the embodiments of the present disclosure provide an information indication method, a user equipment, and a base station, to solve the problem that the user equipment cannot determine the padding bits in the MAC RAR PDU.
  • An embodiment of the present disclosure provides an information indication method, which is applied to a user equipment, and includes:
  • MAC RAR PDU a media access control random access response protocol data unit MAC RAR PDU, where the MAC RAR PDU carries padding padding indication information
  • the MAC RAR PDU includes one or more MAC subPDUs, and the MAC subPDU includes at least a non-padding MAC subPDU, and each non-padding MAC subPDU includes a MAC subheader, and each MAC subheader is carried in the MAC subheader. Indicates whether the padding indication information of the padding is followed by the current MAC subPDU.
  • the E field occupying 1 bit in each MAC subheader is used to indicate whether the current MAC subPDU is padding.
  • the determining, according to the padding indication information in the MAC RAR PDU, the padding in the MAC RAR PDU including:
  • the E field in the MAC sub-header of the target MAC sub-PDU is the first preset value, determining that the target MAC sub-PDU is followed by padding.
  • the MAC RAR PDU includes one or more MAC sub-PDUs, and each MAC sub-PDU includes a MAC sub-header, and each MAC sub-header carries padding indication information indicating whether the current MAC sub-PDU is padding.
  • the E field occupying 1 bit in each of the MAC subheaders is used to indicate whether the current MAC subPDU is padding.
  • the determining, according to the padding indication information in the MAC RAR PDU, the padding in the MAC RAR PDU including:
  • the case that the random access preamble sequence RAPID is carried in each of the MAC subheaders indicates whether the current MAC subPDU is padding.
  • the determining, according to the padding indication information in the MAC RAR PDU, the padding in the MAC RAR PDU including:
  • the RAPID is carried in the MAC sub-header of the target MAC sub-PDU, it is determined whether the RAPID carried in the MAC sub-header of the target MAC sub-PDU is a third preset value;
  • the T domain that occupies 1 bit in each of the MAC subheaders and the T1 field that occupies 1 bit are used to indicate whether the current MAC sub PDU is padding.
  • the determining, according to the padding indication information in the MAC RAR PDU, the padding in the MAC RAR PDU including:
  • the T field in the MAC sub-header of the target MAC sub-PDU is the fourth preset value, parsing the T1 field in the MAC sub-header of the target MAC sub-PDU, and determining the T1 in the MAC sub-header of the target MAC subPDU Whether the domain is the fifth preset value;
  • T1 field in the MAC sub-header of the target MAC sub-PDU is the fifth preset value, determine that the MAC sub-PDU is padding.
  • the embodiment of the present disclosure further provides an information indication method, which is applied to a base station, and includes:
  • the MAC RAR PDU is sent to the user equipment.
  • the MAC RAR PDU includes one or more MAC subPDUs, and the MAC subPDU includes at least a non-padding MAC subPDU, and each non-padding MAC subPDU includes a MAC subheader, and each MAC subheader is carried in the MAC subheader. Indicates whether the padding indication information of the padding is followed by the current MAC subPDU.
  • the E field occupying 1 bit in each MAC subheader is used to indicate whether the current MAC subPDU is padding.
  • the constructing the MAC RAR PDU carrying the padding indication information includes:
  • the E field occupying 1 bit in the MAC subheader of the target MAC subPDU is set to a first preset value.
  • the MAC RAR PDU includes one or more MAC sub-PDUs, and each MAC sub-PDU includes a MAC sub-header, and each MAC sub-header carries padding indication information indicating whether the current MAC sub-PDU is padding.
  • the E field occupying 1 bit in each of the MAC subheaders is used to indicate whether the current MAC subPDU is padding.
  • the constructing the MAC RAR PDU carrying the padding indication information includes:
  • the E field occupying 1 bit in the MAC subheader of the target MAC subPDU is set to a second preset value.
  • the case that the random access preamble sequence RAPID is carried in each of the MAC subheaders indicates whether the current MAC subPDU is padding.
  • the constructing the MAC RAR PDU carrying the padding indication information includes:
  • the target MAC subPDU is padding, set the MAC subheader of the target MAC subPDU to the MAC subheader carrying the RAPID, and set the RAPID in the MAC subheader of the target MAC subPDU to a third preset value.
  • the T domain that occupies 1 bit in each of the MAC subheaders and the T1 field that occupies 1 bit are used to indicate whether the current MAC sub PDU is padding.
  • the constructing the MAC RAR PDU carrying the padding indication information includes:
  • the target MAC sub PDU is padding, set the T field occupying 1 bit in the MAC subheader of the target MAC subPDU to a fourth preset value, and occupy the 1 bit T1 field in the MAC subheader of the target MAC subPDU. Set to the fifth preset value.
  • the embodiment of the present disclosure further provides a user equipment, including:
  • a receiving module configured to receive a media access control random access response protocol data unit MAC RAR PDU sent by the base station, where the MAC RAR PDU carries padding padding indication information;
  • a determining module configured to determine padding in the MAC RAR PDU according to padding indication information in the MAC RAR PDU.
  • the MAC RAR PDU includes one or more MAC subPDUs, and the MAC subPDU includes at least a non-padding MAC subPDU, and each non-padding MAC subPDU includes a MAC subheader, and each MAC subheader is carried in the MAC subheader. Indicates whether the padding indication information of the padding is followed by the current MAC subPDU.
  • the MAC RAR PDU includes one or more MAC sub-PDUs, and each MAC sub-PDU includes a MAC sub-header, and each MAC sub-header carries padding indication information indicating whether the current MAC sub-PDU is padding.
  • the embodiment of the present disclosure further provides a base station, including:
  • a constructing module configured to construct a media access control random access response protocol data unit MAC RAR PDU carrying padding indication information
  • a sending module configured to send the MAC RAR PDU to the user equipment.
  • the MAC RAR PDU includes one or more MAC subPDUs, and the MAC subPDU includes at least a non-padding MAC subPDU, and each non-padding MAC subPDU includes a MAC subheader, and each MAC subheader is carried in the MAC subheader. Indicates whether the padding indication information of the padding is followed by the current MAC subPDU.
  • the MAC RAR PDU includes one or more MAC sub-PDUs, and each MAC sub-PDU includes a MAC sub-header, and each MAC sub-header carries padding indication information indicating whether the current MAC sub-PDU is padding.
  • Embodiments of the present disclosure also provide a user equipment, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor,
  • the transceiver is configured to receive a media access control random access response protocol data unit MAC RAR PDU sent by the base station, where the MAC RAR PDU carries padding padding indication information;
  • the transceiver is further configured to determine padding in the MAC RAR PDU according to padding indication information in the MAC RAR PDU;
  • the transceiver is configured to receive a media access control random access response protocol data unit MAC RAR PDU sent by the base station, where the MAC RAR PDU carries padding padding indication information;
  • the processor is configured to read a program in the memory, and perform the following process: determining padding in the MAC RAR PDU according to padding indication information in the MAC RAR PDU.
  • the MAC RAR PDU includes one or more MAC subPDUs, and the MAC subPDU includes at least a non-padding MAC subPDU, and each non-padding MAC subPDU includes a MAC subheader, and each MAC subheader is carried in the MAC subheader. Indicates whether the padding indication information of the padding is followed by the current MAC subPDU.
  • the E field occupying 1 bit in each MAC subheader is used to indicate whether the current MAC subPDU is padding.
  • the determining, according to the padding indication information in the MAC RAR PDU, the padding in the MAC RAR PDU including:
  • the E field in the MAC sub-header of the target MAC sub-PDU is the first preset value, determining that the target MAC sub-PDU is followed by padding.
  • the MAC RAR PDU includes one or more MAC sub-PDUs, and each MAC sub-PDU includes a MAC sub-header, and each MAC sub-header carries padding indication information indicating whether the current MAC sub-PDU is padding.
  • the E field occupying 1 bit in each of the MAC subheaders is used to indicate whether the current MAC subPDU is padding.
  • the determining, according to the padding indication information in the MAC RAR PDU, the padding in the MAC RAR PDU including:
  • the case that the random access preamble sequence RAPID is carried in each of the MAC subheaders indicates whether the current MAC subPDU is padding.
  • the determining, according to the padding indication information in the MAC RAR PDU, the padding in the MAC RAR PDU including:
  • the RAPID is carried in the MAC sub-header of the target MAC sub-PDU, it is determined whether the RAPID carried in the MAC sub-header of the target MAC sub-PDU is a third preset value;
  • the T domain that occupies 1 bit in each of the MAC subheaders and the T1 field that occupies 1 bit are used to indicate whether the current MAC sub PDU is padding.
  • the determining, according to the padding indication information in the MAC RAR PDU, the padding in the MAC RAR PDU including:
  • the T field in the MAC sub-header of the target MAC sub-PDU is the fourth preset value, parsing the T1 field in the MAC sub-header of the target MAC sub-PDU, and determining the T1 in the MAC sub-header of the target MAC subPDU Whether the domain is the fifth preset value;
  • T1 field in the MAC sub-header of the target MAC sub-PDU is the fifth preset value, determine that the MAC sub-PDU is padding.
  • An embodiment of the present disclosure further provides a base station, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor,
  • the processor is configured to read a program in the memory and perform the following process:
  • the transceiver is configured to send the MAC RAR PDU to a user equipment.
  • the MAC RAR PDU includes one or more MAC subPDUs, and the MAC subPDU includes at least a non-padding MAC subPDU, and each non-padding MAC subPDU includes a MAC subheader, and each MAC subheader is carried in the MAC subheader. Indicates whether the padding indication information of the padding is followed by the current MAC subPDU.
  • the E field occupying 1 bit in each MAC subheader is used to indicate whether the current MAC subPDU is padding.
  • the constructing the MAC RAR PDU carrying the padding indication information includes:
  • the E field occupying 1 bit in the MAC subheader of the target MAC subPDU is set to a first preset value.
  • the MAC RAR PDU includes one or more MAC sub-PDUs, and each MAC sub-PDU includes a MAC sub-header, and each MAC sub-header carries padding indication information indicating whether the current MAC sub-PDU is padding.
  • the E field occupying 1 bit in each of the MAC subheaders is used to indicate whether the current MAC subPDU is padding.
  • the constructing the MAC RAR PDU carrying the padding indication information includes:
  • the E field occupying 1 bit in the MAC subheader of the target MAC subPDU is set to a second preset value.
  • the case that the random access preamble sequence RAPID is carried in each of the MAC subheaders indicates whether the current MAC subPDU is padding.
  • the constructing the MAC RAR PDU carrying the padding indication information includes:
  • the target MAC subPDU is padding, set the MAC subheader of the target MAC subPDU to the MAC subheader carrying the RAPID, and set the RAPID in the MAC subheader of the target MAC subPDU to a third preset value.
  • the T domain that occupies 1 bit in each of the MAC subheaders and the T1 field that occupies 1 bit are used to indicate whether the current MAC sub PDU is padding.
  • the constructing the MAC RAR PDU carrying the padding indication information includes:
  • the target MAC sub PDU is padding, set the T field occupying 1 bit in the MAC subheader of the target MAC subPDU to a fourth preset value, and occupy the 1 bit T1 field in the MAC subheader of the target MAC subPDU. Set to the fifth preset value.
  • the embodiment of the present disclosure further provides a computer readable storage medium, where the program is executed by the processor, and the step of the information indicating method of the user equipment side provided by the embodiment of the present disclosure is implemented; or the program is The steps in the method for indicating information on the base station side provided by the embodiment of the present disclosure are implemented when the processor is executed.
  • the user equipment receives the media access control random access response protocol data unit MAC RAR PDU sent by the base station, where the MAC RAR PDU carries padding padding indication information; the user equipment according to the MAC RAR The padding indication information in the PDU determines padding in the MAC RAR PDU.
  • the user equipment can determine the padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU, avoid unnecessary parsing of the padding part, and save the power consumption of the user equipment; at the same time, the user equipment can avoid the padding error.
  • the unpredictable consequences of the analysis such as misjudging the random access response and performing random access failure caused by uplink transmission or causing interference to other users.
  • FIG. 1 is a schematic structural diagram of a network applicable to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of a competitive random access procedure
  • FIG. 3 is a schematic diagram of a non-contention random access procedure
  • FIG. 4 is a schematic structural diagram of a MAC RAR PDU in an LTE system
  • FIG. 5 is a schematic structural diagram of a MAC subheader carrying a RAPID in an LTE system
  • FIG. 6 is a schematic structural diagram of a MAC subheader carrying BI in an LTE system
  • FIG. 7 is a schematic structural diagram of a MAC RAR in an LTE system
  • FIG. 8 is a schematic structural diagram of a MAC RAR PDU in a next-generation mobile communication system according to an embodiment of the present disclosure
  • FIG. 9 is a flowchart of steps of an information indication method according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a MAC RAR PDU including padding according to an embodiment of the present disclosure
  • FIG. 11 is a schematic structural diagram of another MAC RAR PDU including padding according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a MAC padding subheader according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of a MAC sub-header carrying a RAPID according to an embodiment of the present disclosure
  • FIG. 14 is a schematic structural diagram of a MAC sub-header carrying BI according to an embodiment of the present disclosure
  • FIG. 15 is a schematic structural diagram of another MAC sub-header carrying BI according to an embodiment of the present disclosure.
  • 16 is a schematic structural diagram of another MAC padding subheader according to an embodiment of the present disclosure.
  • FIG. 17 is a schematic flowchart diagram of another information indication method according to an embodiment of the present disclosure.
  • FIG. 18 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 19 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 20 is a schematic structural diagram of another user equipment according to an embodiment of the present disclosure.
  • FIG. 21 is a schematic structural diagram of another base station according to an embodiment of the present disclosure.
  • FIG. 1 is a schematic diagram of a network structure applicable to an embodiment of the present disclosure.
  • a user equipment (User Equipment, UE) 11 and a base station 12 are illustrated.
  • the user equipment 11 may be a mobile phone or a tablet computer ( Terminal-side devices such as Tablet Personal Computer, Laptop Computer, Personal Digital Assistant (PDA), Mobile Internet Device (MID), or Wearable Device, It should be noted that the specific type of the user equipment 11 is not limited in the embodiment of the present disclosure.
  • the base station 12 may be, for example, a macro station, an LTE eNB, a 5G NR NB (a fifth generation mobile communication system base station), etc., and it is to be noted that the specific type of the base station 12 is not limited in the embodiment of the present disclosure.
  • the contiguous access of the LTE system is used for the following purposes: initial access of the user equipment; RRC (Radio Resource Control) connection reestablishment or handover; downlink data arrival in the RRC connected state in the non-synchronized state; uplink in the RRC connected state Data arrival; positioning in RRC connected state.
  • RRC Radio Resource Control
  • the next generation mobile communication system (NR) also introduces a system message request, an inactive UE (inactive user equipment) to restore the connection, and the like.
  • FIG. 2 is a schematic diagram of a contention random access procedure. As shown in FIG. 2, the contention random access procedure mainly includes:
  • the Msg 201 and the user equipment select a random access preamble and a physical random access channel (PRACH), and send the selected random access preamble to the base station on the selected PRACH resource.
  • PRACH physical random access channel
  • a specific random access preamble and/or PRACH resource may be reserved for the Msg201 based SI request.
  • the Msg 202 receives the random access request (ie, Msg 201) sent by the user equipment, and sends a random access response to the user equipment.
  • the random access response may include an uplink timing advance, an uplink resource scheduling signaling (UL grant) allocated for the uplink scheduling transmission, and a temporary C-RNTI (Cell Radio Network Temporary Identifier) allocated by the network side to the user equipment. Identification).
  • the PDCCH (Physical Downlink Control Channel) carrying the scheduling message of the Msg 202 can be scrambled by the RA-RNTI (Random Access Radio Network Temporary Identifier).
  • the Msg 202 can also carry a preamble ID, and the user equipment can determine whether the Msg 202 corresponds to the Msg 201 sent by the RA-RNTI and the preamble ID.
  • the Msg 202 may only contain the preamble ID information corresponding to the Msg 201, and does not include other content.
  • the random access procedure ends with the Msg 202, that is, if the received Msg 202 includes the preamble ID corresponding to the preamble sent by the Msg 201, the system message request process based on the Msg 201 is considered. carry out.
  • the Msg 203 and the user equipment send an uplink transmission on the UL grant specified by the Msg 202.
  • the content of the uplink transmission of the Msg 203 is different for different random access reasons. For example, for the initial access, the Msg 203 transmits an RRC connection establishment request.
  • the user equipment can determine whether the random access is successful according to the Msg204. For the initially accessed user equipment, after the contention resolution is successful, the temporary C-RNTI in the cell is automatically converted into the user equipment in the cell. The unique user equipment identifies the C-RNTI.
  • Non-contention random access is used for handover, downlink data arrival, location, and acquisition of uplink timing.
  • FIG. 3 is a schematic diagram of a non-contention random access procedure. As shown in FIG. 3, the non-contention random access process mainly includes:
  • the Msg 301 sends a random access preamble assignment (RA Preamble Assignment) message to the user equipment, where the random access preamble sequence allocation message includes a dedicated preamble allocated by the base station for the user equipment for non-contention random access and random access. PRACH resources used.
  • RA Preamble Assignment random access preamble assignment
  • the Msg 302 and the user equipment send the designated dedicated preamble to the base station on the designated PRACH resource according to the indication of the Msg 301.
  • the base station can calculate the uplink timing advance TA according to the Msg 302.
  • the Msg 303 sends a random access response to the user equipment.
  • the random access response includes the timing advance information and the subsequent uplink transmission resource allocation UL grant.
  • the timing advance is used by the user equipment to determine the timing relationship of the subsequent uplink transmission.
  • the MAC RAR PDU includes a MAC header, and the MAC RAR PDU may further include a MAC load and/or a padding, where the MA load includes one or more MAC RARs (Media Access Control Random Access Response). Random access response).
  • FIG. 4 is a schematic structural diagram of a MAC RAR PDU in an LTE system.
  • the MAC header includes one or more MAC sub-headers, and at most one MAC RAR PDU may include one carrying BI (Backoff).
  • the MAC subheader of the Indicator fallback indication that is, the BI subheader as shown in FIG.
  • the MAC sub-header carrying the BI does not correspond to the MAC RAR, and the other MAC sub-headers respectively correspond to one MAC RAR.
  • the MAC RAR PDU does not need to be padded; when the size of the scheduling resource is larger than the size of the MAC header and the resource required by the MAC RAR, the remaining part needs to be filled in. Fill bits, ie padding. That is to say, a MAC RAR PDU may include padding or may not include padding, that is, padding in FIG. 4 is optional (opt).
  • MAC sub-headers There are two types of MAC sub-headers in the LTE system, one is a MAC sub-header carrying BI, and the other is a MAC sub-header carrying a RAPID (Random Access Preamble ID), such as the RAPID in FIG. Subheader, the subheader carrying the RAPID always corresponds to a MAC RAR.
  • RAPID Random Access Preamble ID
  • the MAC sub-header carrying the RAPID is an E/T/RAPID subheader, that is, an E-domain, a T-domain, and a RAPID.
  • the structure of the MAC sub-header carrying the RAPID is shown in FIG. 5.
  • the MAC subheader carrying BI is an E/T/R/R/BI subheader, that is, includes an E field, a T field, a reserved bit R, and BI. Please refer to Figure 6 for the structure of the MAC subheader carrying BI.
  • FIG. 7 is a schematic diagram of a MAC RAR structure in an LTE system. As shown in FIG. 7, the domain meanings of the MAC RAR are respectively:
  • Timing Advance Command is used to indicate the time adjustment amount of the uplink data sent by the user equipment, occupying 11 bits;
  • UL Grant A resource allocation field, used to indicate uplink resource allocation, occupying 20 bits.
  • Temporary C-RNTI Temporary C-RNTI, useful only for competing random access.
  • E indicating the type of subsequent information of the MAC sub-header, that is, indicating whether the subsequent information of the MAC sub-header is a MAC sub-header or a MAC payload;
  • T indicates whether the MAC subheader is a BI subheader or a RAR subheader
  • RAPID corresponding to the preamble ID in the random access request
  • the user equipment can parse the MAC header, obtain the size of the MAC header and the MA payload, and then subtract the MAC header plus the MAC payload from the MAC RAR PDU size to obtain the padding size. .
  • next-generation mobile communication system for example, 5G NR, fifth-generation mobile communication system
  • the structure of the MAC RAR PDU is changed to include a plurality of MAC subPDUs (MAC sub-PDUs), and as shown in FIG. 8, each MAC sub-PDU has independence. Indication function.
  • the MAC subPDU includes the following three types:
  • the MAC sub-PDU includes a MAC sub-header and a MAC RAR
  • a MAC subPDU indicating a system message request response has only one MAC subheader.
  • the embodiment of the present disclosure provides an information indication method, which will be described in detail below in conjunction with specific embodiments.
  • FIG. 9 is a flowchart of a method for indicating information according to an embodiment of the present disclosure. The method is applied to a user equipment. As shown in FIG. 9, the method includes:
  • Step 901 Receive a MAC RAR PDU sent by the base station, where the MAC RAR PDU carries padding indication information.
  • Step 902 Determine padding in the MAC RAR PDU according to padding indication information in the MAC RAR PDU.
  • the base station constructs a MAC RAR PDU carrying the padding indication information according to the size of the data to be sent and the size of the scheduling resource, and sends the message to the user equipment.
  • the user equipment receives the MAC RAR PDU sent by the base station, and determines padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU.
  • the MAC RAR PDU includes one or more MAC sub-PDUs, and the padding indication information may be carried in a MAC sub-header of the MAC sub-PDU.
  • the padding indication information carried in the MAC sub-head may indicate whether the current MAC sub-PDU is padding or not. Indicates whether the current MAC subPDU is padding.
  • the current MAC subPDU is followed by the current MAC sub PDU, that is, starting from the next byte after the end of the current MAC subPDU. If the current MAC subPDU is followed by padding, it means that padding is started from the next byte after the end of the current MAC subPDU.
  • the base station may carry the padding indication in the MAC sub-header of the non-padding MAC sub-PDU, or may also introduce a MAC padding sub-header, and introduce a distinguishing indication bit in the MAC sub-header to indicate the padding sub-header.
  • the MAC RAR PDU includes one or more MAC subPDUs, and the MAC subPDU includes at least a non-padding MAC subPDU, and each non-padding MAC subPDU includes a MAC subheader, and each MAC subheader is carried in the MAC subheader. Indicates whether the padding indication information of the padding is followed by the current MAC subPDU.
  • the padding indication information is carried in the MAC sub-header of the non-padding MAC sub-PDU, and the padding indication information carried in the MAC sub-header indicates whether the current MAC sub-PDU is padding.
  • FIG. 10 is a schematic structural diagram of a MAC RAR PDU according to an embodiment of the present disclosure.
  • the MAC RAR PDU includes one or more MAC subPDUs, and the MAC subPDU includes at least non-padding.
  • the MAC sub-PDU, each non-padding MAC sub-PDU contains a MAC sub-header, where each MAC sub-head carries padding indication information.
  • padding is used as a special MAC subPDU in this embodiment, and the padding part does not have a corresponding MAC subheader.
  • the E field occupying 1 bit in each MAC subheader is used to indicate whether the current MAC subPDU is padding.
  • the method may utilize 1 bit of each MAC sub-header.
  • the E field indicates whether the current MAC subPDU is padding.
  • the method can multiplex the MAC sub-header format in the LTE system. Specifically, since the structure of the MAC RAR PDU is changed to include multiple MAC sub-PDUs, the role of the E-domain of the MAC sub-header in the LTE system is no longer needed, so The E field in the MAC sub-head indicates whether the next MAC sub-PDU is padding, that is, the E-domain in the multiplexed MAC sub-head indicates whether the next MAC sub-PDU is padding, for example, the E-domain using the first preset value indicates the next MAC sub-PDU. For padding.
  • the MAC subheader indicating the RAPID is the same as the MAC subheader indicating the RAPID in the LTE system, as shown in FIG. 5; the MAC subheader indicating the BI is the same as the MAC subheader indicating the BI in the LTE system, such as Figure 6 shows.
  • the determining, according to the padding indication information in the MAC RAR PDU, the padding in the MAC RAR PDU including:
  • the E field in the MAC sub-header of the target MAC sub-PDU is the first preset value, determining that the target MAC sub-PDU is followed by padding.
  • the method uses the E field of the first preset value in the MAC subheader to indicate that the next MAC subPDU is padding.
  • the user equipment parses an E field in a MAC subheader of each MAC subPDU, and determines whether an E field in a MAC subheader of each MAC subPDU is a first preset value; if a MAC sub of a target MAC subPDU The E field in the header is the first preset value, and the user equipment determines that the target MAC sub PDU is padding. If the E field in the MAC sub-header of the target MAC sub-PDU is not the first preset value, the user equipment determines that the target MAC sub-PDU is not padding.
  • the first preset value may be 1 or 0, which is not limited by the embodiment of the disclosure. For example, if the first preset value is 1, if the E field in the MAC sub-header of the target MAC sub-PDU is 1, the user equipment determines that the target MAC sub-PDU is padding; if the target MAC sub-PDU is in the MAC sub-header The E field is 0, and the user equipment determines that the target MAC subPDU is not padding.
  • the base station when the base station constructs the MAC RAR PDU carrying the padding indication information, if the target MAC subPDU is followed by padding, the base station selects the E field in the MAC subheader of the target MAC subPDU. Set to the first preset value, for example, 1; if the target MAC subPDU is not padding, the base station sets the E field in the MAC sub-header of the target MAC sub-PDU to be not equal to the first preset value, For example 0.
  • the MAC RAR PDU includes one or more MAC sub-PDUs, and each MAC sub-PDU includes a MAC sub-header, and each MAC sub-header carries padding indication information indicating whether the current MAC sub-PDU is padding.
  • the MAC RAR PDU structure in this embodiment is as shown in FIG. 11.
  • the method introduces a MAC padding subheader (padding subheader shown in FIG. 11), that is, a MAC padding subheader and padding form a special MAC subPDU, and each MAC
  • the padding indication information carried in the subheader is used to indicate whether the current MAC subPDU is padding.
  • the padding indication information carried in each MAC sub-header is used to indicate whether the current MAC sub-header is a MAC padding sub-header. If the current MAC sub-header is a MAC padding sub-header, the current MAC sub-PDU is padding; If the header is not a MAC padding subheader, the current MAC subPDU is not padding.
  • the E field occupying 1 bit in each of the MAC subheaders is used to indicate whether the current MAC subPDU is padding.
  • the method may use the E-domain occupying 1 bit in each of the MAC sub-headers to indicate whether the current MAC sub-PDU is padding.
  • the method can multiplex the MAC sub-header format in the LTE system. Specifically, since the structure of the MAC RAR PDU is changed to include multiple MAC sub-PDUs, the role of the E-domain of the MAC sub-header in the LTE system is no longer needed, so The E field in the MAC sub-head indicates whether the current MAC sub-PDU is padding, that is, the E-domain in the multiplexed MAC sub-head indicates whether the current MAC sub-PDU is padding. For example, the E-domain using the second preset value indicates that the current MAC sub-PDU is padding.
  • the MAC subheader indicating the RAPID is the same as the MAC subheader indicating the RAPID in the LTE system, as shown in FIG. 5; the MAC subheader indicating the BI is the same as the MAC subheader indicating the BI in the LTE system, such as As shown in FIG. 6, the format of the MAC padding subheader indicating padding is as shown in FIG. 12, wherein the LCID in the format shown in FIG. 12 is a logical channel identify.
  • the determining, according to the padding indication information in the MAC RAR PDU, the padding in the MAC RAR PDU including:
  • the method uses the E field of the second preset value in the MAC subheader to indicate that the current MAC subPDU is padding.
  • the user equipment parses an E field in a MAC subheader of each MAC subPDU, and determines whether an E field in a MAC subheader of each MAC subPDU is a second preset value; if a MAC sub of a target MAC subPDU The E field in the header is the second preset value, and the user equipment determines that the target MAC subPDU is padding. If the E field in the MAC sub-header of the target MAC sub-PDU is not the second preset value, the user equipment determines that the target MAC sub-PDU is not padding.
  • the second preset value may be 1 or 0, which is not limited by the embodiment of the disclosure. For example, if the second preset value is 1, if the E field in the MAC sub-header of the target MAC sub-PDU is 1, the user equipment determines that the target MAC sub-PDU is padding; if the target MAC sub-PDU is in the MAC sub-header The E field is 0, and the user equipment determines that the target MAC subPDU is not padding.
  • the base station when the base station constructs the MAC RAR PDU carrying the padding indication information, if the target MAC subPDU is padding, the base station sets the E field in the MAC subheader of the target MAC subPDU. For the second preset value, for example, 1; if the target MAC subPDU is not padding, the base station sets the E field in the MAC sub-header of the target MAC sub-PDU to be not equal to the second preset value, for example, 0. .
  • the case where the random access preamble sequence RAPID is carried in each of the MAC subheaders indicates whether the current MAC subPDU is padding.
  • the method may use the case that the MAPID is carried in each of the MAC sub-headers to indicate whether the current MAC sub-PDU is padding.
  • the method may be used to multiplex the MAC sub-header indicating the RAR in the LTE system to indicate padding, and no longer use the E-domain in the MAC sub-header, that is, the E-domain in the MAC sub-header is set to the R-domain, that is, the reserved bit.
  • the MAC sub-header format indicating the RAR is as shown in FIG. 13
  • the MAC sub-header format indicating BI is as shown in FIG. 14.
  • the method may use the RAPID of the third preset value to indicate that the current MAC subPDU is padding.
  • the determining, according to the padding indication information in the MAC RAR PDU, the padding in the MAC RAR PDU including:
  • the RAPID is carried in the MAC sub-header of the target MAC sub-PDU, it is determined whether the RAPID carried in the MAC sub-header of the target MAC sub-PDU is a third preset value;
  • the method uses the RAPID of the third preset value (for example, all 0s) in the MAC subheader to indicate that the current MAC subPDU is padding.
  • the user equipment parses the MAC sub-header of each MAC sub-PDU, and determines whether the RAPID is carried in each MAC sub-header. If the MAC sub-header of the target MAC sub-PDU carries the RAPID, the MAC sub-header of the target MAC sub-PDU is specified.
  • the user equipment further determines whether the RAPID carried in the MAC sub-header of the target MAC sub-PDU is a third preset value, if the MAC sub-header of the target MAC sub-PDU is carried in the MAC sub-header The RAPID is the third preset value, the user equipment determines that the target MAC subPDU is padding; if the RAPID carried in the MAC sub-head of the target MAC sub-PDU is not the third preset value, the user equipment The RAPID carried in the MAC sub-header of the target MAC sub-PDU is determined to correspond to the random access preamble sequence in the random access request message, and the MAC sub-header is followed by the MAC RAR.
  • the base station when the base station constructs the MAC RAR PDU carrying the padding indication information, if the target MAC subPDU is padding, the base station sets the MAC sub-header of the target MAC subPDU to carry the RAPID.
  • the MAC subheader sets the RAPID in the MAC subheader of the target MAC subPDU to the third preset value, for example, all 0s.
  • the T domain occupying 1 bit in each of the MAC subheaders and the T1 field occupying 1 bit are used to indicate whether the current MAC subPDU is padding.
  • the method may use the T-domain occupying 1 bit in each MAC sub-header and the T1 field occupying 1 bit to indicate the current MAC sub-PDU. Whether it is padding.
  • the method may be used to multiplex the MAC sub-header indicating the BI in the LTE system to indicate padding, and no longer use the E-domain in the MAC sub-header, that is, the E-domain in the MAC sub-header is set to the R-domain, that is, the reserved bit.
  • the MAC sub-header format indicating the RAR is as shown in FIG. 13
  • the MAC sub-header format indicating BI is as shown in FIG.
  • the MAC sub-header format indicating padding is as shown in FIG. 16.
  • the method may use the T domain of the fourth preset value and the T1 field of the fifth preset value to indicate that the current MAC subPDU is padding.
  • the determining, according to the padding indication information in the MAC RAR PDU, the padding in the MAC RAR PDU including:
  • the T field in the MAC sub-header of the target MAC sub-PDU is the fourth preset value, parsing the T1 field in the MAC sub-header of the target MAC sub-PDU, and determining the T1 in the MAC sub-header of the target MAC subPDU Whether the domain is the fifth preset value;
  • T1 field in the MAC sub-header of the target MAC sub-PDU is the fifth preset value, determine that the MAC sub-PDU is padding.
  • the method uses the T field of the fourth preset value in the MAC subheader and the T1 of the fifth preset value to indicate that the current MAC subPDU is padding.
  • the user equipment parses the T field in the MAC subheader of each MAC subPDU, and determines whether the T field in the MAC subheader of each MAC subPDU is a fourth preset value; if the MAC sub of the target MAC subPDU The T field in the header is not the fourth preset value, and the user equipment determines that the MAC subheader of the target MAC subPDU is a MAC subheader indicating the RAR, not a MAC padding subheader; if the MAC substring of the target MAC subPDU The T field in the header is the fourth preset value, and the user equipment determines that the MAC subheader of the target MAC subPDU is a MAC padding subheader or a MAC subheader indicating BI, and the user equipment further parses the target
  • T1 field in the MAC subheader determining whether the T1 field in the MAC subheader of the target MAC subPDU is a fifth preset value; if the T1 field in the MAC subheader of the target MAC subPDU is the fifth preset a value, the user equipment determines that the target MAC subPDU is padding; if the T1 field in the MAC sub-head of the target MAC sub-PDU is not the fifth preset value, the user equipment determines a MAC sub-head of the target MAC subPDU To indicate the MAC subheader of BI.
  • the base station when the base station constructs the MAC RAR PDU carrying the padding indication information, if the target MAC subPDU is padding, the base station sets the T field in the MAC subheader of the target MAC subPDU.
  • the fourth preset value (for example, 0) is set, and the T1 field occupying 1 bit in the MAC sub-header of the target MAC sub-PDU is set to a fifth preset value, for example, 0).
  • the user equipment receives the media access control random access response protocol data unit MAC RAR PDU sent by the base station, where the MAC RAR PDU carries padding padding indication information; the user equipment according to the MAC RAR The padding indication information in the PDU determines padding in the MAC RAR PDU.
  • the user equipment can determine the padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU, avoid unnecessary parsing of the padding part, save power consumption of the user equipment, and enable the user equipment to correctly and efficiently receive random Access response, do not miss valid information; at the same time, can avoid unpredictable consequences of user equipment on padding error parsing, such as misjudging random access response and random access failure caused by uplink transmission according to misjudgment or other users Interference, etc.
  • FIG. 17 is a flowchart of another information indication method according to an embodiment of the present disclosure.
  • the method is applied to a base station. As shown in FIG. 17, the method includes:
  • Step 1701 Construct a MAC RAR PDU carrying padding indication information.
  • Step 1702 Send the MAC RAR PDU to a user equipment.
  • the MAC RAR PDU includes one or more MAC subPDUs, and the MAC subPDU includes at least a non-padding MAC subPDU, and each non-padding MAC subPDU includes a MAC subheader, and each MAC subheader is carried in the MAC subheader. Indicates whether the padding indication information of the padding is followed by the current MAC subPDU.
  • the E field occupying 1 bit in each MAC subheader is used to indicate whether the current MAC subPDU is padding.
  • the constructing the MAC RAR PDU carrying the padding indication information includes:
  • the E field occupying 1 bit in the MAC subheader of the target MAC subPDU is set to a first preset value.
  • the MAC RAR PDU includes one or more MAC sub-PDUs, and each MAC sub-PDU includes a MAC sub-header, and each MAC sub-header carries padding indication information indicating whether the current MAC sub-PDU is padding.
  • the E field occupying 1 bit in each of the MAC subheaders is used to indicate whether the current MAC subPDU is padding.
  • the constructing the MAC RAR PDU carrying the padding indication information includes:
  • the E field occupying 1 bit in the MAC subheader of the target MAC subPDU is set to a second preset value.
  • the case that the random access preamble sequence RAPID is carried in each of the MAC subheaders indicates whether the current MAC subPDU is padding.
  • the constructing the MAC RAR PDU carrying the padding indication information includes:
  • the target MAC subPDU is padding, set the MAC subheader of the target MAC subPDU to the MAC subheader carrying the RAPID, and set the RAPID in the MAC subheader of the target MAC subPDU to a third preset value.
  • the T domain that occupies 1 bit in each of the MAC subheaders and the T1 field that occupies 1 bit are used to indicate whether the current MAC sub PDU is padding.
  • the constructing the MAC RAR PDU carrying the padding indication information includes:
  • the target MAC sub PDU is padding, set the T field occupying 1 bit in the MAC subheader of the target MAC subPDU to a fourth preset value, and occupy the 1 bit T1 field in the MAC subheader of the target MAC subPDU. Set to the fifth preset value.
  • the present embodiment is an implementation manner corresponding to the base station side corresponding to the embodiment shown in FIG. 9.
  • the present embodiment refers to the related description of the embodiment shown in FIG. The embodiment will not be described again, and the same advantageous effects can be achieved.
  • FIG. 18 is a structural diagram of a user equipment according to an embodiment of the present disclosure. As shown in FIG. 18, the user equipment 1800 includes:
  • the receiving module 1801 is configured to receive a media access control random access response protocol data unit MAC RAR PDU sent by the base station, where the MAC RAR PDU carries padding padding indication information;
  • the determining module 1082 is configured to determine padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU.
  • the MAC RAR PDU includes one or more MAC subPDUs, and the MAC subPDU includes at least a non-padding MAC subPDU, and each non-padding MAC subPDU includes a MAC subheader, and each MAC subheader is carried in the MAC subheader. Indicates whether the padding indication information of the padding is followed by the current MAC subPDU.
  • the E field occupying 1 bit in each MAC subheader is used to indicate whether the current MAC subPDU is padding.
  • the determining module 1082 determines, according to the padding indication information in the MAC RAR PDU, padding in the MAC RAR PDU, including:
  • the E field in the MAC sub-header of the target MAC sub-PDU is the first preset value, determining that the target MAC sub-PDU is followed by padding.
  • the MAC RAR PDU includes one or more MAC sub-PDUs, and each MAC sub-PDU includes a MAC sub-header, and each MAC sub-header carries padding indication information indicating whether the current MAC sub-PDU is padding.
  • the E field occupying 1 bit in each of the MAC subheaders is used to indicate whether the current MAC subPDU is padding.
  • the determining module 1082 determines, according to the padding indication information in the MAC RAR PDU, padding in the MAC RAR PDU, including:
  • the case that the random access preamble sequence RAPID is carried in each of the MAC subheaders indicates whether the current MAC subPDU is padding.
  • the determining module 1082 determines, according to the padding indication information in the MAC RAR PDU, padding in the MAC RAR PDU, including:
  • the RAPID is carried in the MAC sub-header of the target MAC sub-PDU, it is determined whether the RAPID carried in the MAC sub-header of the target MAC sub-PDU is a third preset value;
  • the T domain that occupies 1 bit in each of the MAC subheaders and the T1 field that occupies 1 bit are used to indicate whether the current MAC sub PDU is padding.
  • the determining module 1082 determines, according to the padding indication information in the MAC RAR PDU, padding in the MAC RAR PDU, including:
  • the T field in the MAC sub-header of the target MAC sub-PDU is the fourth preset value, parsing the T1 field in the MAC sub-header of the target MAC sub-PDU, and determining the T1 in the MAC sub-header of the target MAC subPDU Whether the domain is the fifth preset value;
  • T1 field in the MAC sub-header of the target MAC sub-PDU is the fifth preset value, determine that the MAC sub-PDU is padding.
  • the user equipment 1800 may be the user equipment in any of the embodiments of the method in the embodiment of the disclosure, and any implementation manner of the user equipment in the method embodiment of the disclosure may be The foregoing user equipment 1800 in the embodiment is implemented, and the same beneficial effects are achieved, and details are not described herein again.
  • FIG. 19 is a structural diagram of a base station according to an embodiment of the present disclosure. As shown in FIG. 19, the base station 1900 includes:
  • a constructing module 1901 configured to construct a medium access control random access response protocol data unit MAC RAR PDU carrying padding indication information
  • the sending module 1902 is configured to send the MAC RAR PDU to the user equipment.
  • the MAC RAR PDU includes one or more MAC subPDUs, and the MAC subPDU includes at least a non-padding MAC subPDU, and each non-padding MAC subPDU includes a MAC subheader, and each MAC subheader is carried in the MAC subheader. Indicates whether the padding indication information of the padding is followed by the current MAC subPDU.
  • the E field occupying 1 bit in each MAC subheader is used to indicate whether the current MAC subPDU is padding.
  • the constructing module 1901 constructs a MAC RAR PDU carrying padding indication information, including:
  • the E field occupying 1 bit in the MAC subheader of the target MAC subPDU is set to a first preset value.
  • the MAC RAR PDU includes one or more MAC sub-PDUs, and each MAC sub-PDU includes a MAC sub-header, and each MAC sub-header carries padding indication information indicating whether the current MAC sub-PDU is padding.
  • the E field occupying 1 bit in each of the MAC subheaders is used to indicate whether the current MAC subPDU is padding.
  • the constructing module 1901 constructs a MAC RAR PDU carrying padding indication information, including:
  • the E field occupying 1 bit in the MAC subheader of the target MAC subPDU is set to a second preset value.
  • the case that the random access preamble sequence RAPID is carried in each of the MAC subheaders indicates whether the current MAC subPDU is padding.
  • the constructing module 1901 constructs a MAC RAR PDU carrying padding indication information, including:
  • the target MAC subPDU is padding, set the MAC subheader of the target MAC subPDU to the MAC subheader carrying the RAPID, and set the RAPID in the MAC subheader of the target MAC subPDU to a third preset value.
  • the T domain that occupies 1 bit in each of the MAC subheaders and the T1 field that occupies 1 bit are used to indicate whether the current MAC sub PDU is padding.
  • the constructing module 1901 constructs a MAC RAR PDU carrying padding indication information, including:
  • the target MAC sub PDU is padding, set the T field occupying 1 bit in the MAC subheader of the target MAC subPDU to a fourth preset value, and occupy the 1 bit T1 field in the MAC subheader of the target MAC subPDU. Set to the fifth preset value.
  • the foregoing base station 1900 may be a base station in any of the method embodiments in the embodiments of the disclosure, and any implementation manner of the base station in the method embodiment in this disclosure may be used in this embodiment.
  • the foregoing base station 1900 implements the same and achieves the same beneficial effects, and details are not described herein again.
  • FIG. 20 is a structural diagram of another user equipment according to an embodiment of the present disclosure.
  • the user equipment includes: a transceiver 2010, a memory 2020, a processor 2000, and a memory stored in the memory.
  • a computer program on 2020 and operable on the processor wherein:
  • the transceiver 2010 is configured to receive measurement configuration information that is sent by the base station, where the measurement configuration information is measurement configuration information of a synchronization signal block that is actually sent by the at least one bandwidth part BWP, where the user equipment receives the measurement configuration. Information, the user equipment works in a BWP that does not send a synchronization signal block;
  • the transceiver 2010 is configured to receive a media access control random access response protocol data unit MAC RAR PDU sent by the base station, where the MAC RAR PDU carries padding padding indication information;
  • the transceiver 2010 is further configured to determine padding in the MAC RAR PDU according to padding indication information in the MAC RAR PDU.
  • the transceiver 2010 is configured to receive a media access control random access response protocol data unit MAC RAR PDU sent by the base station, where the MAC RAR PDU carries padding padding indication information;
  • the processor 2000 is configured to read a program in the memory, and perform the following process: determining padding in the MAC RAR PDU according to padding indication information in the MAC RAR PDU.
  • determining that padding in the MAC RAR PDU may be performed by the transceiver 2010 or may be performed by the processor 2000.
  • the transceiver 2010 is configured to receive and transmit data under the control of the processor 2000.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 2000 and various circuits of memory represented by memory 2020.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the transceiver 2010 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 2000 is responsible for managing the bus architecture and the usual processing, and the memory 2020 can store data used by the processor 2000 in performing operations.
  • the memory 2020 does not limit one device only on the user equipment, and the memory 2020 and the processor 2000 can be separated into different geographical locations.
  • the MAC RAR PDU includes one or more MAC subPDUs, and the MAC subPDU includes at least a non-padding MAC subPDU, and each non-padding MAC subPDU includes a MAC subheader, and each MAC subheader is carried in the MAC subheader. Indicates whether the padding indication information of the padding is followed by the current MAC subPDU.
  • the E field occupying 1 bit in each MAC subheader is used to indicate whether the current MAC subPDU is padding.
  • the determining, according to the padding indication information in the MAC RAR PDU, the padding in the MAC RAR PDU including:
  • the E field in the MAC sub-header of the target MAC sub-PDU is the first preset value, determining that the target MAC sub-PDU is followed by padding.
  • the MAC RAR PDU includes one or more MAC sub-PDUs, and each MAC sub-PDU includes a MAC sub-header, and each MAC sub-header carries padding indication information indicating whether the current MAC sub-PDU is padding.
  • the E field occupying 1 bit in each of the MAC subheaders is used to indicate whether the current MAC subPDU is padding.
  • the determining, according to the padding indication information in the MAC RAR PDU, the padding in the MAC RAR PDU including:
  • the case that the random access preamble sequence RAPID is carried in each of the MAC subheaders indicates whether the current MAC subPDU is padding.
  • the determining, according to the padding indication information in the MAC RAR PDU, the padding in the MAC RAR PDU including:
  • the RAPID is carried in the MAC sub-header of the target MAC sub-PDU, it is determined whether the RAPID carried in the MAC sub-header of the target MAC sub-PDU is a third preset value;
  • the T domain that occupies 1 bit in each of the MAC subheaders and the T1 field that occupies 1 bit are used to indicate whether the current MAC sub PDU is padding.
  • the determining, according to the padding indication information in the MAC RAR PDU, the padding in the MAC RAR PDU including:
  • the T field in the MAC sub-header of the target MAC sub-PDU is the fourth preset value, parsing the T1 field in the MAC sub-header of the target MAC sub-PDU, and determining the T1 in the MAC sub-header of the target MAC subPDU Whether the domain is the fifth preset value;
  • T1 field in the MAC sub-header of the target MAC sub-PDU is the fifth preset value, determine that the MAC sub-PDU is padding.
  • the foregoing user equipment may be the user equipment in any of the embodiments of the method in the embodiment of the disclosure, and any implementation manner of the user equipment in the method embodiment in this disclosure may be implemented by the implementation.
  • the above-mentioned user equipment in the example is implemented, and the same beneficial effects are achieved, and details are not described herein again.
  • FIG. 21 is a structural diagram of another base station according to the implementation of the present disclosure.
  • the base station includes: a transceiver 2110, a memory 2120, a processor 2100, and is stored in the memory 2120.
  • a computer program executable on the processor wherein:
  • the processor 2100 is configured to read a program in the memory and perform the following process:
  • the transceiver 2110 is configured to send the MAC RAR PDU to a user equipment.
  • the transceiver 2110 is configured to receive and transmit data under the control of the processor 2100.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 2100 and various circuits of memory represented by memory 2120.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 2110 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 2100 is responsible for managing the bus architecture and general processing, and the memory 2120 can store data used by the processor 2100 in performing operations.
  • the memory 2120 does not limit one device only on the user equipment, and the memory 2120 and the processor 2100 can be separated in different geographical locations.
  • the MAC RAR PDU includes one or more MAC subPDUs, and the MAC subPDU includes at least a non-padding MAC subPDU, and each non-padding MAC subPDU includes a MAC subheader, and each MAC subheader is carried in the MAC subheader. Indicates whether the padding indication information of the padding is followed by the current MAC subPDU.
  • the E field occupying 1 bit in each MAC subheader is used to indicate whether the current MAC subPDU is padding.
  • the constructing the MAC RAR PDU carrying the padding indication information includes:
  • the E field occupying 1 bit in the MAC subheader of the target MAC subPDU is set to a first preset value.
  • the MAC RAR PDU includes one or more MAC sub-PDUs, and each MAC sub-PDU includes a MAC sub-header, and each MAC sub-header carries padding indication information indicating whether the current MAC sub-PDU is padding.
  • the E field occupying 1 bit in each of the MAC subheaders is used to indicate whether the current MAC subPDU is padding.
  • the constructing the MAC RAR PDU carrying the padding indication information includes:
  • the E field occupying 1 bit in the MAC subheader of the target MAC subPDU is set to a second preset value.
  • the case that the random access preamble sequence RAPID is carried in each of the MAC subheaders indicates whether the current MAC subPDU is padding.
  • the constructing the MAC RAR PDU carrying the padding indication information includes:
  • the target MAC subPDU is padding, set the MAC subheader of the target MAC subPDU to the MAC subheader carrying the RAPID, and set the RAPID in the MAC subheader of the target MAC subPDU to a third preset value.
  • the T domain that occupies 1 bit in each of the MAC subheaders and the T1 field that occupies 1 bit are used to indicate whether the current MAC sub PDU is padding.
  • the constructing the MAC RAR PDU carrying the padding indication information includes:
  • the target MAC sub PDU is padding, set the T field occupying 1 bit in the MAC subheader of the target MAC subPDU to a fourth preset value, and occupy the 1 bit T1 field in the MAC subheader of the target MAC subPDU. Set to the fifth preset value.
  • the foregoing base station may be a base station in any of the method embodiments in the embodiments of the disclosure, and any implementation manner of the base station in the method embodiment in the embodiment of the disclosure may be used in this embodiment.
  • the above base station implements and achieves the same beneficial effects, and details are not described herein again.
  • the embodiment of the present disclosure further provides a computer readable storage medium, where the computer program is stored, and when the program is executed by the processor, the steps in the information indicating method on the user equipment side provided by the embodiment of the present disclosure are implemented.
  • the embodiment of the present disclosure further provides a computer readable storage medium, where the computer program is stored, and when the program is executed by the processor, the steps in the information indicating method of the base station side provided by the embodiment of the present disclosure are implemented.
  • the disclosed method and apparatus may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the transceiving method of the various embodiments of the present disclosure.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, and the program code can be stored. Medium.

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Abstract

本公开提供一种信息指示方法、用户设备和基站，该方法包括：用户设备接收基站发送的媒体接入控制随机接入响应协议数据单元MAC RAR PDU，MAC RAR PDU中携带有填充比特padding指示信息；用户设备根据所述MAC RAR PDU中的padding指示信息，确定MAC RAR PDU中的padding。

Description

信息指示方法、用户设备及基站
相关申请的交叉引用
本申请主张在2017年9月28日在中国提交的中国专利申请号No.201710899327.0的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，尤其涉及一种信息指示方法、用户设备及基站。
背景技术
在LTE(Long Term Evolution，长期演进)系统中，MAC RAR PDU(Media Access Control Random Access Response Protocol Data Unit，媒体接入控制随机接入响应协议数据单元)由MAC头(MAC header)与MAC负荷(MAC payload)组成。当调度资源的大小大于MAC头以及MAC负荷所需资源的大小时，剩下的部分需要填入填充比特(即padding)。用户设备(User Equipment，UE)接收到MAC RAR PDU后可以获取MAC头以及MAC负荷的大小，然后根据MAC RAR PDU大小减去MAC头加MAC负荷(MAC payload)的和，即得到padding大小。
下一代移动通信系统中，MAC RAR PDU(Media Access Control Random Access Response Protocol Data Unit，媒体接入控制随机接入响应协议数据单元)由多个MAC subPDU(MAC子PDU)构成，每个MAC subPDU具有独立的指示功能。然而，由于上述MAC RAR PDU结构，用户设备无法确定MAC RAR PDU中的padding，举例而言，假设padding为全1，用户设备解析时将其当作一种MAC子PDU并遵照执行，容易发生错误且增加用户设备的耗电量。
可见，下一代移动通信系统中，用户设备无法确定MAC RAR PDU中的padding，遇到MAC RAR PDU中的padding部分会进行不必要的解析，增加了用户设备的耗电量。
发明内容
本公开实施例提供一种信息指示方法、用户设备及基站，以解决用户设备无法确定MAC RAR PDU中的填充比特的问题。
本公开实施例提供一种信息指示方法，应用于用户设备，包括：
接收基站发送的媒体接入控制随机接入响应协议数据单元MAC RAR PDU，所述MAC RAR PDU中携带有填充比特padding指示信息；
根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU之后是否为padding的padding指示信息。
可选的，利用每个MAC子头中的占用1比特的E域指示当前MAC subPDU之后是否为padding。
可选的，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头中的E域；
若目标MAC subPDU的MAC子头中的E域为第一预设值，确定所述目标MAC subPDU之后为padding。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，每个MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU是否为padding的padding指示信息。
可选的，利用所述每个MAC子头中的占用1比特的E域指示当前MAC subPDU是否为padding。
可选的，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头中的E域；
若目标MAC subPDU的MAC子头中的E域为第二预设值，确定该目标 MAC subPDU为padding。
可选的，利用所述每个MAC子头中携带随机接入前导序列RAPID的情况指示当前MAC subPDU是否为padding。
可选的，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头，并判断每个MAC子头中是否携带RAPID；
若目标MAC subPDU的MAC子头中携带RAPID，判断所述目标MAC subPDU的MAC子头中携带的RAPID是否为第三预设值；
若所述目标MAC subPDU的MAC子头中携带的RAPID为所述第三预设值，确定该目标MAC subPDU为padding。
可选的，利用所述每个MAC子头中的占用1比特的T域以及占用1比特的T1域指示当前MAC subPDU是否为padding。
可选的，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头中的T域，并判断每个MAC subPDU的MAC子头中的T域是否为第四预设值；
若目标MAC subPDU的MAC子头中的T域为所述第四预设值，解析所述目标MAC subPDU的MAC子头中的T1域，并判断所述目标MAC subPDU的MAC子头中的T1域是否为第五预设值；
若目标MAC subPDU的MAC子头中的T1域为所述第五预设值，确定该MAC subPDU为padding。
本公开实施例还提供一种信息指示方法，应用于基站，包括：
构造携带有填充比特padding指示信息的媒体接入控制随机接入响应协议数据单元MAC RAR PDU；
向用户设备发送所述MAC RAR PDU。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU之后是 否为padding的padding指示信息。
可选的，利用每个MAC子头中的占用1比特的E域指示当前MAC subPDU之后是否为padding。
可选的，所述构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU之后为padding，将所述目标MAC subPDU的MAC子头中的占用1比特的E域设置为第一预设值。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，每个MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU是否为padding的padding指示信息。
可选的，利用所述每个MAC子头中的占用1比特的E域指示当前MAC subPDU是否为padding。
可选的，所述构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU为padding，将所述目标MAC subPDU的MAC子头中的占用1比特的E域设置为第二预设值。
可选的，利用所述每个MAC子头中携带随机接入前导序列RAPID的情况指示当前MAC subPDU是否为padding。
可选的，所述构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU为padding，将该目标MAC subPDU的MAC子头设置为携带有RAPID的MAC子头，且将该目标MAC subPDU的MAC子头中的RAPID设置为第三预设值。
可选的，利用所述每个MAC子头中的占用1比特的T域以及占用1比特的T1域指示当前MAC subPDU是否为padding。
可选的，所述构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU为padding，将该目标MAC subPDU的MAC子头中的占用1比特的T域设置为第四预设值，且将该目标MAC subPDU的MAC子头中的占用1比特的T1域设置为第五预设值。
本公开实施例还提供一种用户设备，包括：
接收模块，用于接收基站发送的媒体接入控制随机接入响应协议数据单元MAC RAR PDU，所述MAC RAR PDU中携带有填充比特padding指示信 息；
确定模块，用于根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU之后是否为padding的padding指示信息。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，每个MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU是否为padding的padding指示信息。
本公开实施例还提供一种基站，包括：
构造模块，用于构造携带有填充比特padding指示信息的媒体接入控制随机接入响应协议数据单元MAC RAR PDU；
发送模块，用于向用户设备发送所述MAC RAR PDU。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU之后是否为padding的padding指示信息。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，每个MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU是否为padding的padding指示信息。
本公开实施例还提供一种用户设备，包括：收发机、存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，
所述收发机，用于接收基站发送的媒体接入控制随机接入响应协议数据单元MAC RAR PDU，所述MAC RAR PDU中携带有填充比特padding指示信息；
所述收发机，还用于根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding；
或者，
所述收发机，用于接收基站发送的媒体接入控制随机接入响应协议数据单元MAC RAR PDU，所述MAC RAR PDU中携带有填充比特padding指示信息；
所述处理器，用于读取存储器中的程序，执行下列过程：根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU之后是否为padding的padding指示信息。
可选的，利用每个MAC子头中的占用1比特的E域指示当前MAC subPDU之后是否为padding。
可选的，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头中的E域；
若目标MAC subPDU的MAC子头中的E域为第一预设值，确定所述目标MAC subPDU之后为padding。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，每个MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU是否为padding的padding指示信息。
可选的，利用所述每个MAC子头中的占用1比特的E域指示当前MAC subPDU是否为padding。
可选的，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头中的E域；
若目标MAC subPDU的MAC子头中的E域为第二预设值，确定该目标MAC subPDU为padding。
可选的，利用所述每个MAC子头中携带随机接入前导序列RAPID的情况指示当前MAC subPDU是否为padding。
可选的，所述根据所述MAC RAR PDU中的padding指示信息，确定所 述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头，并判断每个MAC子头中是否携带RAPID；
若目标MAC subPDU的MAC子头中携带RAPID，判断所述目标MAC subPDU的MAC子头中携带的RAPID是否为第三预设值；
若所述目标MAC subPDU的MAC子头中携带的RAPID为所述第三预设值，确定该目标MAC subPDU为padding。
可选的，利用所述每个MAC子头中的占用1比特的T域以及占用1比特的T1域指示当前MAC subPDU是否为padding。
可选的，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头中的T域，并判断每个MAC subPDU的MAC子头中的T域是否为第四预设值；
若目标MAC subPDU的MAC子头中的T域为所述第四预设值，解析所述目标MAC subPDU的MAC子头中的T1域，并判断所述目标MAC subPDU的MAC子头中的T1域是否为第五预设值；
若目标MAC subPDU的MAC子头中的T1域为所述第五预设值，确定该MAC subPDU为padding。
本公开实施例还提供一种基站，包括：收发机、存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，
所述处理器，用于读取存储器中的程序，执行下列过程：
构造携带有填充比特padding指示信息的媒体接入控制随机接入响应协议数据单元MAC RAR PDU；
所述收发机，用于向用户设备发送所述MAC RAR PDU。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU之后是否为padding的padding指示信息。
可选的，利用每个MAC子头中的占用1比特的E域指示当前MAC  subPDU之后是否为padding。
可选的，所述构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU之后为padding，将所述目标MAC subPDU的MAC子头中的占用1比特的E域设置为第一预设值。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，每个MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU是否为padding的padding指示信息。
可选的，利用所述每个MAC子头中的占用1比特的E域指示当前MAC subPDU是否为padding。
可选的，所述构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU为padding，将所述目标MAC subPDU的MAC子头中的占用1比特的E域设置为第二预设值。
可选的，利用所述每个MAC子头中携带随机接入前导序列RAPID的情况指示当前MAC subPDU是否为padding。
可选的，所述构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU为padding，将该目标MAC subPDU的MAC子头设置为携带有RAPID的MAC子头，且将该目标MAC subPDU的MAC子头中的RAPID设置为第三预设值。
可选的，利用所述每个MAC子头中的占用1比特的T域以及占用1比特的T1域指示当前MAC subPDU是否为padding。
可选的，所述构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU为padding，将该目标MAC subPDU的MAC子头中的占用1比特的T域设置为第四预设值，且将该目标MAC subPDU的MAC子头中的占用1比特的T1域设置为第五预设值。
本公开实施例还提供一种计算机可读存储介质，其上存储有程序，该程序被处理器执行时实现本公开实施例提供的用户设备侧的信息指示方法中的步骤；或者，该程序被处理器执行时实现本公开实施例提供的基站侧的信息指示方法中的步骤。
本公开实施例中，用户设备接收基站发送的媒体接入控制随机接入响应 协议数据单元MAC RAR PDU，所述MAC RAR PDU中携带有填充比特padding指示信息；所述用户设备根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding。这样，用户设备能够根据MAC RAR PDU中的padding指示信息确定MAC RAR PDU中的padding，避免对padding部分进行不必要的解析，能够节省用户设备的耗电量；同时，能够避免用户设备对padding错误解析带来的不可预知后果，例如误判随机接入响应并根据误判进行上行传输造成的随机接入失败或对其他用户产生干扰等。
附图说明
图1是本公开实施例可应用的网络结构示意图；
图2是一种竞争随机接入过程示意图；
图3是一种非竞争随机接入过程示意图；
图4是LTE系统中的一种的MAC RAR PDU结构示意图；
图5是LTE系统中的一种携带RAPID的MAC子头结构示意图；
图6是LTE系统中的一种携带BI的MAC子头结构示意图；
图7是LTE系统中的一种MAC RAR结构示意图；
图8是本公开实施例提供的下一代移动通信系统中的MAC RAR PDU结构示意图；
图9是本公开实施例提供的一种信息指示方法的步骤流程图；
图10是本公开实施例提供的一种包括padding的MAC RAR PDU结构示意图；
图11是本公开实施例提供的另一种包括padding的MAC RAR PDU结构示意图；
图12是本公开实施例提供的一种MAC padding子头的结构示意图；
图13是本公开实施例提供的一种携带RAPID的MAC子头的结构示意图；
图14是本公开实施例提供的一种携带BI的MAC子头的结构示意图；
图15是本公开实施例提供的另一种携带BI的MAC子头的结构示意图；
图16是本公开实施例提供的另一种MAC padding子头的结构示意图；
图17是本公开实施例提供的另一种信息指示方法的流程示意图；
图18是本公开实施例提供的一种用户设备的结构示意图；
图19是本公开实施例提供的一种基站的结构示意图；
图20是本公开实施例提供的另一种用户设备的结构示意图；
图21是本公开实施例提供的另一种基站的结构示意图。
具体实施方式
为使本公开要解决的技术问题、技术方案和优点更加清楚，下面将结合附图及具体实施例进行详细描述。
参见图1，图1是本公开实施例可应用的网络结构示意图，如图1所示，包括用户设备(User Equipment，UE)11和基站12，其中，用户设备11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)、个人数字助理(personal digital assistant，简称PDA)、移动上网装置(Mobile Internet Device，MID)或可穿戴式设备(Wearable Device)等终端侧设备，需要说明的是，在本公开实施例中并不限定用户设备11的具体类型。基站12可以是例如：宏站、LTE eNB、5G NR NB(第五代移动通信系统基站)等，需要说明的是，在本公开实施例中并不限定基站12的具体类型。
LTE系统的竞争随机接入用于以下目的：用户设备初始接入；RRC(Radio Resource Control，无线资源控制)连接重建或切换；非同步状态下RRC连接态时下行数据到达；RRC连接态时上行数据到达；RRC连接态时的定位。下一代移动通信系统(NR)中还引入系统消息请求、inactive UE(非激活态用户设备)恢复连接等目的。
请参阅图2，图2是一种竞争随机接入过程示意图，如图2所示，竞争随机接入过程主要包括：
Msg201、用户设备选择随机接入前导码(Random Access Preamble)以及PRACH(Physical Random Access Channel，物理随机接入信道)，并在选择的PRACH资源上向基站发送所选的随机接入前导码。在NR中，可以为基于Msg201系统消息请求(Msg201based SI request)预留特定的随机接入 前导码和/或PRACH资源。
Msg202、基站接收到用户设备发送的随机接入请求(即Msg201)，向用户设备发送随机接入响应。随机接入响应中可以包含上行定时提前量、为上行调度传输分配的上行资源调度信令(UL grant)、网络侧为用户设备分配的临时C-RNTI(Cell Radio Network Temporary Identifier，小区无线网络临时标识)。承载该Msg202的调度消息的PDCCH(Physical Downlink Control Channel，物理下行控制信道)可以用RA-RNTI(Random Access Radio Network Temporary Identifier，随机接入无线网络临时标识)加扰。Msg202还可以携带前导序列(preamble ID)，用户设备可以通过RA-RNTI及preamble ID确定该Msg202是否与其发送的Msg201对应。
在NR中，针对基于Msg201的系统消息请求，Msg202可以只包含与Msg201对应的preamble ID信息，而不包括其他内容。此外，在NR中，对于基于Msg201的系统消息请求场景，随机接入过程到Msg202结束，即如果接收到的Msg202中包含与Msg201发送的preamble对应的preamble ID，则认为基于Msg201的系统消息请求过程完成。
Msg203、用户设备在Msg202指定的UL grant上发送上行传输，不同随机接入原因Msg203上行传输的内容不同，例如对于初始接入，Msg203传输的是RRC连接建立请求。
Msg204、竞争解决消息(Contention Resolution)，用户设备根据Msg204可以判断随机接入是否成功，对于初始接入的用户设备，竞争解决成功后其在小区的临时C-RNTI自动转化为用户设备在该小区的唯一用户设备标识C-RNTI。
非竞争随机接入用于切换、下行数据到达、定位以及获取上行定时。参阅图3，图3是一种非竞争随机接入过程的示意图，如图3所示，非竞争随机接入过程主要包括：
Msg301、基站向用户设备发送随机接入前导序列分配(RA Preamble assignment)消息，所述随机接入前导序列分配消息包含基站为用户设备分配的用于非竞争随机接入的专用preamble以及随机接入使用的PRACH资源。
Msg302、用户设备根据Msg301的指示，在指定的PRACH资源上向基 站发送指定的专用preamble。基站接收到Msg302后可以根据Msg302计算上行定时提前量TA。
Msg303、基站向用户设备发送随机接入响应，随机接入响应中包含定时提前量信息、后续上行传输资源分配UL grant，定时提前量用于用户设备确定后续上行传输的定时关系。
在LTE系统中，MAC RAR PDU包括一个MAC头，所述MAC RAR PDU还可以包括MAC负荷和/或padding，其中MA负荷包括一个或多个MAC RAR(Media Access Control Random Access Response，媒体接入控制随机接入响应)。参见图4，图4是LTE系统中的一种的MAC RAR PDU结构示意图，如图4所示，MAC头包括一个或多个MAC子头，一个MAC RAR PDU中至多可以包括一个携带BI(Backoff Indicator回退指示)的MAC子头，即如图4所示的BI subheader。携带BI的MAC子头不与MAC RAR对应，其他MAC子头分别对应一个MAC RAR。当调度资源的大小等于MAC头以及MAC RAR所需资源的大小时，MAC RAR PDU不需要填充；当调度资源的大小大于MAC头以及MAC RAR所需资源的大小时，剩下的部分需要填入填充比特，即padding。也就是说，一个MAC RAR PDU中可以包括padding，也可以不包括padding，即图4中的padding为可选的(opt)。
LTE系统中的MAC子头格式包括两种，一种是携带BI的MAC子头，一种是携带RAPID(Random Access preamble ID，随机接入前导序列)的MAC子头，例如图4中的RAPID subheader，携带RAPID的子头总是和一个MAC RAR对应。
携带RAPID的MAC子头为E/T/RAPID subheader，即包含E域、T域以及RAPID，携带RAPID的MAC子头的结构请参阅图5。携带BI的MAC子头为E/T/R/R/BI subheader，即包含E域、T域、保留比特R以及BI。携带BI的MAC子头的结构请参阅图6。
参阅图7，图7是LTE系统中的一种MAC RAR结构示意图，如图7所示，MAC RAR的各域含义分别为:
R：预留比特；
Timing Advance Command：定时提前命令，用于指示用户设备发送上行 数据的时间调整量，占用11bit；
UL Grant：资源分配域，用于指示上行资源分配，占用20bit；
Temporary C-RNTI：临时C-RNTI，只对竞争随机接入有用。
其中，在LTE系统中，一个MAC子头中各域含义分别为：
E：指示该MAC子头的后续信息的类型，即指示该MAC子头的后续信息为MAC子头还是MAC payload；
T：指示该MAC子头为BI子头还是RAR子头；
RAPID：与随机接入请求中的preamble ID对应；
BI：回退指示。
LTE中，用户设备接收到MAC RAR PDU后，可以解析MAC头，获取MAC头以及MA负荷的大小，然后根据MAC RAR PDU大小减去MAC头加MAC负荷(MAC payload)的和，即得到padding大小。
在下一代移动通信系统(例如5G NR，第五代移动通信系统)中，MAC RAR PDU的结构改为包括多个MAC subPDU(MAC子PDU)，如图8所示，每个MAC subPDU具有独立的指示功能。
MAC subPDU包括以下三种类型：
指示BI的MAC subPDU，该类MAC subPDU只有一个MAC子头；
指示MAC RAR的MAC subPDU，该类MAC subPDU包括一个MAC子头以及一个MAC RAR；
指示系统消息请求响应的MAC subPDU，该类MAC subPDU只有一个MAC子头。
然而，由于5G NR的MAC RAR PDU包括一个或多个MAC subPDU，用户终端不能从MAC subPDU中推导出padding部分的大小。基于上述问题，本公开实施例提供一种信息指示方法，以下将结合具体实施例对本公开进行详细描述。
请参见图9，图9是本公开实施例提供的一种信息指示方法的流程图，所述方法应用于用户设备中，如图9所示，所述方法包括：
步骤901、接收基站发送的MAC RAR PDU，所述MAC RAR PDU中携带有padding指示信息。
步骤902、根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding。
本公开实施例中，用户设备向基站发送随机接入请求后，所述基站根据待发送数据的大小以及调度资源的大小构造携带有padding指示信息的MAC RAR PDU，并向所述用户设备发送。所述用户设备接收基站发送的MAC RAR PDU，并根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding。
所述MAC RAR PDU包括一个或多个MAC subPDU，所述padding指示信息可以携带在MAC subPDU的MAC子头中，MAC子头中携带的padding指示信息可以指示当前MAC subPDU之后是否为padding，也可以指示当前MAC subPDU是否为padding。所述当前MAC subPDU之后指紧随所述当前MAC subPDU，即从当前MAC subPDU结束之后的下一个字节开始计算。如果当前MAC subPDU之后为padding，则表示从当前MAC subPDU结束后的下一个字节开始都是padding。
所述基站可以将padding指示携带在非padding的MAC subPDU的MAC子头，也可以引入MAC padding子头，并在MAC子头中引入区分指示位用于指示padding子头。
可选地，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU之后是否为padding的padding指示信息。
该实施例中，padding指示信息携带在非padding的MAC subPDU的MAC子头中，MAC子头中携带的padding指示信息指示当前MAC subPDU之后是否为padding。
参见图10，图10是本公开实施例提供的一种MAC RAR PDU的结构示意图，如图10所示，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU含有MAC子头，其中，每个MAC子头中携带padding指示信息。需要说明的是，如图10所示，该实施例中将padding作为一个特殊的 MAC subPDU，padding部分没有对应的MAC子头。
可选地，利用每个MAC子头中的占用1比特的E域指示当前MAC subPDU之后是否为padding。
当padding指示信息携带在非padding的MAC subPDU的MAC子头中，且所述padding指示信息用于指示当前MAC subPDU之后是否为padding时，所述方法可以利用每个MAC子头中占用1比特的E域指示当前MAC subPDU之后是否为padding。
所述方法可以复用LTE系统中的MAC子头格式，具体地，由于MAC RAR PDU的结构变更为包括多个MAC subPDU，LTE系统中MAC子头的E域的作用不再需要，因此可以利用MAC子头中的E域指示下一个MAC subPDU是否为padding，即复用MAC子头中的E域指示下一个MAC subPDU是否为padding，例如使用第一预设值的E域指示下一个MAC subPDU为padding。该实施例中，指示RAPID的MAC子头与LTE系统中指示RAPID的MAC子头格式相同，如图5所示；指示BI的MAC子头与LTE系统中指示BI的MAC子头格式相同，如图6所示。
可选地，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头中的E域；
若目标MAC subPDU的MAC子头中的E域为第一预设值，确定所述目标MAC subPDU之后为padding。
该实施例中，所述方法利用MAC子头中第一预设值的E域指示下一个MAC subPDU为padding。具体地，所述用户设备解析每个MAC subPDU的MAC子头中的E域，并判断每个MAC subPDU的MAC子头中的E域是否为第一预设值；若目标MAC subPDU的MAC子头中的E域为所述第一预设值，所述用户设备确定该目标MAC subPDU之后为padding。若目标MAC subPDU的MAC子头中的E域不为所述第一预设值，所述用户设备确定该目标MAC subPDU之后不为padding。
所述第一预设值可以为1，也可以为0，本公开实施例对此不作限定。以所述第一预设值为1为例，若目标MAC subPDU的MAC子头中的E域为1， 所述用户设备确定该目标MAC subPDU之后为padding；若目标MAC subPDU的MAC子头中的E域为0，所述用户设备确定该目标MAC subPDU之后不为padding。
可以理解的是，该实施例中，当基站构造所述携带有padding指示信息的MAC RAR PDU时，若目标MAC subPDU之后为padding，所述基站将该目标MAC subPDU的MAC子头中的E域设置为所述第一预设值，例如1；若目标MAC subPDU之后不为padding，所述基站将该目标MAC subPDU的MAC子头中的E域设置为不等于所述第一预设值，例如0。
可选地，所述MAC RAR PDU包括一个或多个MAC subPDU，每个MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU是否为padding的padding指示信息。
该实施例中的MAC RAR PDU结构如图11所示，所述方法引入MAC padding子头(图11所示的padding subheader)，即将MAC padding子头与padding组成一个特殊的MAC subPDU，每个MAC子头中携带的padding指示信息用于指示当前MAC subPDU是否为padding。
具体地，每个MAC子头中携带的padding指示信息用于指示当前MAC子头是否为MAC padding子头，若当前MAC子头为MAC padding子头，则当前MAC subPDU为padding；若当前MAC子头不为MAC padding子头，则当前MAC subPDU不为padding。
可选地，利用所述每个MAC子头中的占用1比特的E域指示当前MAC subPDU是否为padding。
当MAC子头中的padding指示信息用于指示当前MAC subPDU是否为padding时，所述方法可以利用所述每个MAC子头中占用1比特的E域指示当前MAC subPDU是否为padding。
所述方法可以复用LTE系统中的MAC子头格式，具体地，由于MAC RAR PDU的结构变更为包括多个MAC subPDU，LTE系统中MAC子头的E域的作用不再需要，因此可以利用MAC子头中的E域指示当前MAC subPDU是否为padding，即复用MAC子头中的E域指示当前MAC subPDU是否为padding，例如使用第二预设值的E域指示当前MAC subPDU为padding。该 实施例中，指示RAPID的MAC子头与LTE系统中指示RAPID的MAC子头格式相同，如图5所示；指示BI的MAC子头与LTE系统中指示BI的MAC子头格式相同，如图6所示；指示padding的MAC padding子头的格式如图12所示，其中，图12所示的格式中LCID为逻辑信道标识(logical channel identify)。
可选地，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头中的E域；
若目标MAC subPDU的MAC子头中的E域为第二预设值，确定该目标MAC subPDU为padding。
该实施例中，所述方法利用MAC子头中第二预设值的E域指示当前MAC subPDU为padding。具体地，所述用户设备解析每个MAC subPDU的MAC子头中的E域，并判断每个MAC subPDU的MAC子头中的E域是否为第二预设值；若目标MAC subPDU的MAC子头中的E域为所述第二预设值，所述用户设备确定该目标MAC subPDU为padding。若目标MAC subPDU的MAC子头中的E域不为所述第二预设值，所述用户设备确定该目标MAC subPDU不为padding。
所述第二预设值可以为1，也可以为0，本公开实施例对此不作限定。以所述第二预设值为1为例，若目标MAC subPDU的MAC子头中的E域为1，所述用户设备确定该目标MAC subPDU为padding；若目标MAC subPDU的MAC子头中的E域为0，所述用户设备确定该目标MAC subPDU不为padding。
可以理解的是，该实施例中，当基站构造所述携带有padding指示信息的MAC RAR PDU时，若目标MAC subPDU为padding，所述基站将该目标MAC subPDU的MAC子头中的E域设置为所述第二预设值，例如1；若目标MAC subPDU不为padding，所述基站将该目标MAC subPDU的MAC子头中的E域设置为不等于所述第二预设值，例如0。
可选地，利用所述每个MAC子头中携带随机接入前导序列RAPID的情况指示当前MAC subPDU是否为padding。
当MAC子头中的padding指示信息用于指示当前MAC subPDU是否为 padding时，所述方法可以利用所述每个MAC子头中携带RAPID的情况指示当前MAC subPDU是否为padding。
所述方法可以复用LTE系统中指示RAR的MAC子头格式指示padding，并且不再使用MAC子头中的E域，即将MAC子头中的E域设置为R域，即保留比特。该实施例中，指示RAR的MAC子头格式如图13所示，指示BI的MAC子头格式如图14所示。所述方法可以利用第三预设值的RAPID指示当前MAC subPDU为padding。
可选地，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头，并判断每个MAC子头中是否携带RAPID；
若目标MAC subPDU的MAC子头中携带RAPID，判断所述目标MAC subPDU的MAC子头中携带的RAPID是否为第三预设值；
若所述目标MAC subPDU的MAC子头中携带的RAPID为所述第三预设值，确定该目标MAC subPDU为padding。
该实施例中，所述方法利用MAC子头中第三预设值(例如全0)的RAPID指示当前MAC subPDU为padding。具体地，所述用户设备解析每个MAC subPDU的MAC子头，并判断每个MAC子头中是否携带RAPID；若目标MAC subPDU的MAC子头中携带RAPID，说明该目标MAC subPDU的MAC子头为带RAR的MAC子头或者MAC padding子头；所述用户设备进一步判断该目标MAC subPDU的MAC子头中携带的RAPID是否为第三预设值，若该目标MAC subPDU的MAC子头中携带的RAPID为所述第三预设值，所述用户设备确定该目标MAC subPDU为padding；若该目标MAC subPDU的MAC子头中携带的RAPID不为所述第三预设值，所述用户设备确定该目标MAC subPDU的MAC子头中携带的RAPID与随机接入请求消息中的随机接入前导序列对应，该MAC子头后续跟随的是MAC RAR。
可以理解的是，该实施例中，当基站构造所述携带有padding指示信息的MAC RAR PDU时，若目标MAC subPDU为padding，所述基站将该目标MAC subPDU的MAC子头设置为携带RAPID的MAC子头，且将该目标 MAC subPDU的MAC子头中的RAPID设置为所述第三预设值，例如全0。
可选地，利用所述每个MAC子头中的占用1比特的T域以及占用1比特的T1域指示当前MAC subPDU是否为padding。
当MAC子头中的padding指示信息用于指示当前MAC subPDU是否为padding时，所述方法可以利用所述每个MAC子头中占用1比特的T域以及占用1比特的T1域指示当前MAC subPDU是否为padding。
所述方法可以复用LTE系统中指示BI的MAC子头格式指示padding，并且不再使用MAC子头中的E域，即将MAC子头中的E域设置为R域，即保留比特。该实施例中，指示RAR的MAC子头格式如图13所示，指示BI的MAC子头格式如图15所示，指示padding的MAC子头格式如图16所示。所述方法可以利用第四预设值的T域以及第五预设值的T1域指示当前MAC subPDU为padding。
可选地，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头中的T域，并判断每个MAC subPDU的MAC子头中的T域是否为第四预设值；
若目标MAC subPDU的MAC子头中的T域为所述第四预设值，解析所述目标MAC subPDU的MAC子头中的T1域，并判断所述目标MAC subPDU的MAC子头中的T1域是否为第五预设值；
若目标MAC subPDU的MAC子头中的T1域为所述第五预设值，确定该MAC subPDU为padding。
该实施例中，所述方法利用MAC子头中第四预设值的T域以及第五预设值的T1指示当前MAC subPDU为padding。具体地，所述用户设备解析每个MAC subPDU的MAC子头中的T域，并判断每个MAC subPDU的MAC子头中的T域是否为第四预设值；若目标MAC subPDU的MAC子头中的T域不为所述第四预设值，所述用户设备确定该目标MAC subPDU的MAC子头为指示RAR的MAC子头，不为MAC padding子头；若目标MAC subPDU的MAC子头中的T域为所述第四预设值，所述用户设备确定该目标MAC subPDU的MAC子头为MAC padding子头或者指示BI的MAC子头，所述 用户设备进一步解析目标MAC subPDU的MAC子头中的T1域，并判断该目标MAC subPDU的MAC子头中的T1域是否为第五预设值；若该目标MAC subPDU的MAC子头中的T1域为所述第五预设值，所述用户设备确定该目标MAC subPDU为padding；若该目标MAC subPDU的MAC子头中的T1域不为所述第五预设值，所述用户设备确定该目标MAC subPDU的MAC子头为指示BI的MAC子头。
可以理解的是，该实施例中，当基站构造所述携带有padding指示信息的MAC RAR PDU时，若目标MAC subPDU为padding，所述基站将该目标MAC subPDU的MAC子头中的T域设置为所述第四预设值(例如0)，且将该目标MAC subPDU的MAC子头中的占用1比特的T1域设置为第五预设值例如0)。
本公开实施例中，用户设备接收基站发送的媒体接入控制随机接入响应协议数据单元MAC RAR PDU，所述MAC RAR PDU中携带有填充比特padding指示信息；所述用户设备根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding。这样，用户设备能够根据MAC RAR PDU中的padding指示信息确定MAC RAR PDU中的padding，避免对padding部分进行不必要的解析，能够节省用户设备的耗电量，也使得用户设备可以正确有效接收随机接入响应，不错过有效信息；同时，能够避免用户设备对padding错误解析带来的不可预知后果，例如误判随机接入响应并根据误判进行上行传输造成的随机接入失败或对其他用户产生干扰等。
请参见图17，图17是本公开实施例提供的另一种信息指示方法的流程图，所述方法应用于基站中，如图17所示，所述方法包括：
步骤1701、构造携带有padding指示信息的MAC RAR PDU。
步骤1702、向用户设备发送所述MAC RAR PDU。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU之后是否为padding的padding指示信息。
可选的，利用每个MAC子头中的占用1比特的E域指示当前MAC  subPDU之后是否为padding。
可选的，所述构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU之后为padding，将所述目标MAC subPDU的MAC子头中的占用1比特的E域设置为第一预设值。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，每个MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU是否为padding的padding指示信息。
可选的，利用所述每个MAC子头中的占用1比特的E域指示当前MAC subPDU是否为padding。
可选的，所述构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU为padding，将所述目标MAC subPDU的MAC子头中的占用1比特的E域设置为第二预设值。
可选的，利用所述每个MAC子头中携带随机接入前导序列RAPID的情况指示当前MAC subPDU是否为padding。
可选的，所述构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU为padding，将该目标MAC subPDU的MAC子头设置为携带有RAPID的MAC子头，且将该目标MAC subPDU的MAC子头中的RAPID设置为第三预设值。
可选的，利用所述每个MAC子头中的占用1比特的T域以及占用1比特的T1域指示当前MAC subPDU是否为padding。
可选的，所述构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU为padding，将该目标MAC subPDU的MAC子头中的占用1比特的T域设置为第四预设值，且将该目标MAC subPDU的MAC子头中的占用1比特的T1域设置为第五预设值。
需要说明的是，本实施例作为与图9所示的实施例中对应的基站侧的实施方式，其具体的实施方式可以参见图9所示的实施例的相关说明，为了避免重复说明，本实施例不再赘述，且还可以达到相同有益效果。
请参见图18，图18是本公开实施例提供的一种用户设备的结构图，如图18所示，用户设备1800包括：
接收模块1801，用于接收基站发送的媒体接入控制随机接入响应协议数据单元MAC RAR PDU，所述MAC RAR PDU中携带有填充比特padding指示信息；
确定模块1082，用于根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU之后是否为padding的padding指示信息。
可选的，利用每个MAC子头中的占用1比特的E域指示当前MAC subPDU之后是否为padding。
可选的，所述确定模块1082根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头中的E域；
若目标MAC subPDU的MAC子头中的E域为第一预设值，确定所述目标MAC subPDU之后为padding。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，每个MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU是否为padding的padding指示信息。
可选的，利用所述每个MAC子头中的占用1比特的E域指示当前MAC subPDU是否为padding。
可选的，所述确定模块1082根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头中的E域；
若目标MAC subPDU的MAC子头中的E域为第二预设值，确定该目标MAC subPDU为padding。
可选的，利用所述每个MAC子头中携带随机接入前导序列RAPID的情况指示当前MAC subPDU是否为padding。
可选的，所述确定模块1082根据所述MAC RAR PDU中的padding指示 信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头，并判断每个MAC子头中是否携带RAPID；
若目标MAC subPDU的MAC子头中携带RAPID，判断所述目标MAC subPDU的MAC子头中携带的RAPID是否为第三预设值；
若所述目标MAC subPDU的MAC子头中携带的RAPID为所述第三预设值，确定该目标MAC subPDU为padding。
可选的，利用所述每个MAC子头中的占用1比特的T域以及占用1比特的T1域指示当前MAC subPDU是否为padding。
可选的，所述确定模块1082根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头中的T域，并判断每个MAC subPDU的MAC子头中的T域是否为第四预设值；
若目标MAC subPDU的MAC子头中的T域为所述第四预设值，解析所述目标MAC subPDU的MAC子头中的T1域，并判断所述目标MAC subPDU的MAC子头中的T1域是否为第五预设值；
若目标MAC subPDU的MAC子头中的T1域为所述第五预设值，确定该MAC subPDU为padding。
需要说明的是，本实施例中上述用户设备1800可以是本公开实施例中方法实施例中任意实施方式的用户设备，本公开实施例中方法实施例中用户设备的任意实施方式都可以被本实施例中的上述用户设备1800所实现，以及达到相同的有益效果，此处不再赘述。
请参见图19，图19是本公开实施例提供的一种基站的结构图，如图19所示，基站1900包括：
构造模块1901，用于构造携带有填充比特padding指示信息的媒体接入控制随机接入响应协议数据单元MAC RAR PDU；
发送模块1902，用于向用户设备发送所述MAC RAR PDU。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU 含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU之后是否为padding的padding指示信息。
可选的，利用每个MAC子头中的占用1比特的E域指示当前MAC subPDU之后是否为padding。
可选的，所述构造模块1901构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU之后为padding，将所述目标MAC subPDU的MAC子头中的占用1比特的E域设置为第一预设值。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，每个MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU是否为padding的padding指示信息。
可选的，利用所述每个MAC子头中的占用1比特的E域指示当前MAC subPDU是否为padding。
可选的，所述构造模块1901构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU为padding，将所述目标MAC subPDU的MAC子头中的占用1比特的E域设置为第二预设值。
可选的，利用所述每个MAC子头中携带随机接入前导序列RAPID的情况指示当前MAC subPDU是否为padding。
可选的，所述构造模块1901构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU为padding，将该目标MAC subPDU的MAC子头设置为携带有RAPID的MAC子头，且将该目标MAC subPDU的MAC子头中的RAPID设置为第三预设值。
可选的，利用所述每个MAC子头中的占用1比特的T域以及占用1比特的T1域指示当前MAC subPDU是否为padding。
可选的，所述构造模块1901构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU为padding，将该目标MAC subPDU的MAC子头 中的占用1比特的T域设置为第四预设值，且将该目标MAC subPDU的MAC子头中的占用1比特的T1域设置为第五预设值。
需要说明的是，本实施例中上述基站1900可以是本公开实施例中方法实施例中任意实施方式的基站，本公开实施例中方法实施例中基站的任意实施方式都可以被本实施例中的上述基站1900所实现，以及达到相同的有益效果，此处不再赘述。
请参考图20，图20是本公开实施例提供的另一种用户设备的结构图，如图20所示，该用户设备包括：收发机2010、存储器2020、处理器2000及存储在所述存储器2020上并可在所述处理器上运行的计算机程序，其中：
所述收发机2010，用于接收基站发送的测量配置信息，所述测量配置信息为至少一个带宽部分BWP上实际发送的同步信号块的测量配置信息，其中，所述用户设备接收所述测量配置信息时，所述用户设备工作在不发送同步信号块的BWP；
所述收发机2010，用于接收基站发送的媒体接入控制随机接入响应协议数据单元MAC RAR PDU，所述MAC RAR PDU中携带有填充比特padding指示信息；
所述收发机2010，还用于根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding；
或者，
所述收发机2010，用于接收基站发送的媒体接入控制随机接入响应协议数据单元MAC RAR PDU，所述MAC RAR PDU中携带有填充比特padding指示信息；
所述处理器2000，用于读取存储器中的程序，执行下列过程：根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding。
通过上述可知，上述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding可以是由收发机2010执行，也可以由处理器2000执行的。
其中，收发机2010，用于在处理器2000的控制下接收和发送数据。
在图20中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器2000代表的一个或多个处理器和存储器2020代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机2010可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。
处理器2000负责管理总线架构和通常的处理，存储器2020可以存储处理器2000在执行操作时所使用的数据。
需要说明的是，存储器2020并不限定只在用户设备上的一种设备，可以将存储器2020和处理器2000分离处于不同的地理位置。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU之后是否为padding的padding指示信息。
可选的，利用每个MAC子头中的占用1比特的E域指示当前MAC subPDU之后是否为padding。
可选的，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头中的E域；
若目标MAC subPDU的MAC子头中的E域为第一预设值，确定所述目标MAC subPDU之后为padding。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，每个MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU是否为padding的padding指示信息。
可选的，利用所述每个MAC子头中的占用1比特的E域指示当前MAC subPDU是否为padding。
可选的，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头中的E域；
若目标MAC subPDU的MAC子头中的E域为第二预设值，确定该目标MAC subPDU为padding。
可选的，利用所述每个MAC子头中携带随机接入前导序列RAPID的情况指示当前MAC subPDU是否为padding。
可选的，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头，并判断每个MAC子头中是否携带RAPID；
若目标MAC subPDU的MAC子头中携带RAPID，判断所述目标MAC subPDU的MAC子头中携带的RAPID是否为第三预设值；
若所述目标MAC subPDU的MAC子头中携带的RAPID为所述第三预设值，确定该目标MAC subPDU为padding。
可选的，利用所述每个MAC子头中的占用1比特的T域以及占用1比特的T1域指示当前MAC subPDU是否为padding。
可选的，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
解析每个MAC subPDU的MAC子头中的T域，并判断每个MAC subPDU的MAC子头中的T域是否为第四预设值；
若目标MAC subPDU的MAC子头中的T域为所述第四预设值，解析所述目标MAC subPDU的MAC子头中的T1域，并判断所述目标MAC subPDU的MAC子头中的T1域是否为第五预设值；
若目标MAC subPDU的MAC子头中的T1域为所述第五预设值，确定该MAC subPDU为padding。
需要说明的是，本实施例中上述用户设备可以是本公开实施例中方法实施例中任意实施方式的用户设备，本公开实施例中方法实施例中用户设备的任意实施方式都可以被本实施例中的上述用户设备所实现，以及达到相同的有益效果，此处不再赘述。
请参考图21，图21是本公开实施提供的另一种基站的结构图，如图21所示，该基站包括：收发机2110、存储器2120、处理器2100及存储在所述 存储器2120上并可在所述处理器上运行的计算机程序，其中：
所述处理器2100，用于读取存储器中的程序，执行下列过程：
构造携带有填充比特padding指示信息的媒体接入控制随机接入响应协议数据单元MAC RAR PDU；
所述收发机2110，用于向用户设备发送所述MAC RAR PDU。
其中，收发机2110，用于在处理器2100的控制下接收和发送数据。
在图21中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器2100代表的一个或多个处理器和存储器2120代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机2110可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。
处理器2100负责管理总线架构和通常的处理，存储器2120可以存储处理器2100在执行操作时所使用的数据。
需要说明的是，存储器2120并不限定只在用户设备上的一种设备，可以将存储器2120和处理器2100分离处于不同的地理位置。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU之后是否为padding的padding指示信息。
可选的，利用每个MAC子头中的占用1比特的E域指示当前MAC subPDU之后是否为padding。
可选的，所述构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU之后为padding，将所述目标MAC subPDU的MAC子头中的占用1比特的E域设置为第一预设值。
可选的，所述MAC RAR PDU包括一个或多个MAC subPDU，每个MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU是否为padding的padding指示信息。
可选的，利用所述每个MAC子头中的占用1比特的E域指示当前MAC  subPDU是否为padding。
可选的，所述构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU为padding，将所述目标MAC subPDU的MAC子头中的占用1比特的E域设置为第二预设值。
可选的，利用所述每个MAC子头中携带随机接入前导序列RAPID的情况指示当前MAC subPDU是否为padding。
可选的，所述构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU为padding，将该目标MAC subPDU的MAC子头设置为携带有RAPID的MAC子头，且将该目标MAC subPDU的MAC子头中的RAPID设置为第三预设值。
可选的，利用所述每个MAC子头中的占用1比特的T域以及占用1比特的T1域指示当前MAC subPDU是否为padding。
可选的，所述构造携带有padding指示信息的MAC RAR PDU，包括：
若目标MAC subPDU为padding，将该目标MAC subPDU的MAC子头中的占用1比特的T域设置为第四预设值，且将该目标MAC subPDU的MAC子头中的占用1比特的T1域设置为第五预设值。
需要说明的是，本实施例中上述基站可以是本公开实施例中方法实施例中任意实施方式的基站，本公开实施例中方法实施例中基站的任意实施方式都可以被本实施例中的上述基站所实现，以及达到相同的有益效果，此处不再赘述。
本公开实施例还提供一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现本公开实施例提供的用户设备侧的信息指示方法中的步骤。
本公开实施例还提供一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现本公开实施例提供的基站侧的信息指示方法中的步骤。
在本公开所提供的几个实施例中，应该理解到，所揭露方法和装置，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外 的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理包括，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本公开各个实施例所述收发方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，简称ROM)、随机存取存储器(Random Access Memory，简称RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述是本公开的可选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本公开所述原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本公开的保护范围。

Claims (51)

  1. 一种信息指示方法，应用于用户设备，包括：
    接收基站发送的媒体接入控制随机接入响应协议数据单元MAC RAR PDU，所述MAC RAR PDU中携带有填充比特padding指示信息；
    根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding。
  2. 根据权利要求1所述的方法，其中，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU之后是否为padding的padding指示信息。
  3. 根据权利要求2所述的方法，其中，利用每个MAC子头中的占用1比特的E域指示当前MAC subPDU之后是否为padding。
  4. 根据权利要求3所述的方法，其中，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
    解析每个MAC subPDU的MAC子头中的E域；
    若目标MAC subPDU的MAC子头中的E域为第一预设值，确定所述目标MAC subPDU之后为padding。
  5. 根据权利要求1所述的方法，其中，所述MAC RAR PDU包括一个或多个MAC subPDU，每个MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU是否为padding的padding指示信息。
  6. 根据权利要求5所述的方法，其中，利用所述每个MAC子头中的占用1比特的E域指示当前MAC subPDU是否为padding。
  7. 根据权利要求6所述的方法，其中，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
    解析每个MAC subPDU的MAC子头中的E域；
    若目标MAC subPDU的MAC子头中的E域为第二预设值，确定该目标MAC subPDU为padding。
  8. 根据权利要求5所述的方法，其中，利用所述每个MAC子头中携带 随机接入前导序列RAPID的情况指示当前MAC subPDU是否为padding。
  9. 根据权利要求8所述的方法，其中，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
    解析每个MAC subPDU的MAC子头，并判断每个MAC子头中是否携带RAPID；
    若目标MAC subPDU的MAC子头中携带RAPID，判断所述目标MAC subPDU的MAC子头中携带的RAPID是否为第三预设值；
    若所述目标MAC subPDU的MAC子头中携带的RAPID为所述第三预设值，确定该目标MAC subPDU为padding。
  10. 根据权利要求5所述的方法，其中，利用所述每个MAC子头中的占用1比特的T域以及占用1比特的T1域指示当前MAC subPDU是否为padding。
  11. 根据权利要求10所述的方法，其中，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
    解析每个MAC subPDU的MAC子头中的T域，并判断每个MAC subPDU的MAC子头中的T域是否为第四预设值；
    若目标MAC subPDU的MAC子头中的T域为所述第四预设值，解析所述目标MAC subPDU的MAC子头中的T1域，并判断所述目标MAC subPDU的MAC子头中的T1域是否为第五预设值；
    若目标MAC subPDU的MAC子头中的T1域为所述第五预设值，确定该MAC subPDU为padding。
  12. 一种信息指示方法，应用于基站，包括：
    构造携带有填充比特padding指示信息的媒体接入控制随机接入响应协议数据单元MAC RAR PDU；
    向用户设备发送所述MAC RAR PDU。
  13. 根据权利要求12所述的方法，其中，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU之后是否为padding的padding指示信息。
  14. 根据权利要求13所述的方法，其中，利用每个MAC子头中的占用1比特的E域指示当前MAC subPDU之后是否为padding。
  15. 根据权利要求14所述的方法，其中，所述构造携带有padding指示信息的MAC RAR PDU，包括：
    若目标MAC subPDU之后为padding，将所述目标MAC subPDU的MAC子头中的占用1比特的E域设置为第一预设值。
  16. 根据权利要求12所述的方法，其中，所述MAC RAR PDU包括一个或多个MAC subPDU，每个MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU是否为padding的padding指示信息。
  17. 根据权利要求16所述的方法，其中，利用所述每个MAC子头中的占用1比特的E域指示当前MAC subPDU是否为padding。
  18. 根据权利要求17所述的方法，其中，所述构造携带有padding指示信息的MAC RAR PDU，包括：
    若目标MAC subPDU为padding，将所述目标MAC subPDU的MAC子头中的占用1比特的E域设置为第二预设值。
  19. 根据权利要求16所述的方法，其中，利用所述每个MAC子头中携带随机接入前导序列RAPID的情况指示当前MAC subPDU是否为padding。
  20. 根据权利要求19所述的方法，其中，所述构造携带有padding指示信息的MAC RAR PDU，包括：
    若目标MAC subPDU为padding，将该目标MAC subPDU的MAC子头设置为携带有RAPID的MAC子头，且将该目标MAC subPDU的MAC子头中的RAPID设置为第三预设值。
  21. 根据权利要求16所述的方法，其中，利用所述每个MAC子头中的占用1比特的T域以及占用1比特的T1域指示当前MAC subPDU是否为padding。
  22. 根据权利要求21所述的方法，其中，所述构造携带有padding指示信息的MAC RAR PDU，包括：
    若目标MAC subPDU为padding，将该目标MAC subPDU的MAC子头中的占用1比特的T域设置为第四预设值，且将该目标MAC subPDU的MAC 子头中的占用1比特的T1域设置为第五预设值。
  23. 一种用户设备，包括：
    接收模块，用于接收基站发送的媒体接入控制随机接入响应协议数据单元MAC RAR PDU，所述MAC RAR PDU中携带有填充比特padding指示信息；
    确定模块，用于根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding。
  24. 根据权利要求23所述的用户设备，其中，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU之后是否为padding的padding指示信息。
  25. 根据权利要求23所述的用户设备，其中，所述MAC RAR PDU包括一个或多个MAC subPDU，每个MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU是否为padding的padding指示信息。
  26. 一种基站包括：
    构造模块，用于构造携带有填充比特padding指示信息的媒体接入控制随机接入响应协议数据单元MAC RAR PDU；
    发送模块，用于向用户设备发送所述MAC RAR PDU。
  27. 根据权利要求26所述的基站，其中，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU之后是否为padding的padding指示信息。
  28. 根据权利要求26所述的基站，其中，所述MAC RAR PDU包括一个或多个MAC subPDU，每个MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU是否为padding的padding指示信息。
  29. 一种用户设备，包括：收发机、存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，其中，
    所述收发机，用于接收基站发送的媒体接入控制随机接入响应协议数据单元MAC RAR PDU，所述MAC RAR PDU中携带有填充比特padding指示 信息；
    所述收发机，还用于根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding；
    或者，
    所述收发机，用于接收基站发送的媒体接入控制随机接入响应协议数据单元MAC RAR PDU，所述MAC RAR PDU中携带有填充比特padding指示信息；
    所述处理器，用于读取存储器中的程序，执行下列过程：根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding。
  30. 根据权利要求29所述的用户设备，其中，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU之后是否为padding的padding指示信息。
  31. 根据权利要求30所述的用户设备，其中，利用每个MAC子头中的占用1比特的E域指示当前MAC subPDU之后是否为padding。
  32. 根据权利要求31所述的用户设备，其中，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
    解析每个MAC subPDU的MAC子头中的E域；
    若目标MAC subPDU的MAC子头中的E域为第一预设值，确定所述目标MAC subPDU之后为padding。
  33. 根据权利要求29所述的用户设备，其中，所述MAC RAR PDU包括一个或多个MAC subPDU，每个MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU是否为padding的padding指示信息。
  34. 根据权利要求33所述的用户设备，其中，利用所述每个MAC子头中的占用1比特的E域指示当前MAC subPDU是否为padding。
  35. 根据权利要求34所述的用户设备，其中，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
    解析每个MAC subPDU的MAC子头中的E域；
    若目标MAC subPDU的MAC子头中的E域为第二预设值，确定该目标 MAC subPDU为padding。
  36. 根据权利要求33所述的用户设备，其中，利用所述每个MAC子头中携带随机接入前导序列RAPID的情况指示当前MAC subPDU是否为padding。
  37. 根据权利要求36所述的用户设备，其中，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
    解析每个MAC subPDU的MAC子头，并判断每个MAC子头中是否携带RAPID；
    若目标MAC subPDU的MAC子头中携带RAPID，判断所述目标MAC subPDU的MAC子头中携带的RAPID是否为第三预设值；
    若所述目标MAC subPDU的MAC子头中携带的RAPID为所述第三预设值，确定该目标MAC subPDU为padding。
  38. 根据权利要求33所述的用户设备，其中，利用所述每个MAC子头中的占用1比特的T域以及占用1比特的T1域指示当前MAC subPDU是否为padding。
  39. 根据权利要求38所述的用户设备，其中，所述根据所述MAC RAR PDU中的padding指示信息，确定所述MAC RAR PDU中的padding，包括：
    解析每个MAC subPDU的MAC子头中的T域，并判断每个MAC subPDU的MAC子头中的T域是否为第四预设值；
    若目标MAC subPDU的MAC子头中的T域为所述第四预设值，解析所述目标MAC subPDU的MAC子头中的T1域，并判断所述目标MAC subPDU的MAC子头中的T1域是否为第五预设值；
    若目标MAC subPDU的MAC子头中的T1域为所述第五预设值，确定该MAC subPDU为padding。
  40. 一种基站，包括：收发机、存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，其中，
    所述处理器，用于读取存储器中的程序，执行下列过程：
    构造携带有填充比特padding指示信息的媒体接入控制随机接入响应协议数据单元MAC RAR PDU；
    所述收发机，用于向用户设备发送所述MAC RAR PDU。
  41. 根据权利要求40所述的基站，其中，所述MAC RAR PDU包括一个或多个MAC subPDU，所述MAC subPDU至少包括非padding的MAC subPDU，每个非padding的MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU之后是否为padding的padding指示信息。
  42. 根据权利要求41所述的基站，其中，利用每个MAC子头中的占用1比特的E域指示当前MAC subPDU之后是否为padding。
  43. 根据权利要求42所述的基站，其中，所述构造携带有padding指示信息的MAC RAR PDU，包括：
    若目标MAC subPDU之后为padding，将所述目标MAC subPDU的MAC子头中的占用1比特的E域设置为第一预设值。
  44. 根据权利要求40所述的基站，其中，所述MAC RAR PDU包括一个或多个MAC subPDU，每个MAC subPDU含有MAC子头，每个MAC子头中携带用于指示当前MAC subPDU是否为padding的padding指示信息。
  45. 根据权利要求44所述的基站，其中，利用所述每个MAC子头中的占用1比特的E域指示当前MAC subPDU是否为padding。
  46. 根据权利要求45所述的基站，其中，所述构造携带有padding指示信息的MAC RAR PDU，包括：
    若目标MAC subPDU为padding，将所述目标MAC subPDU的MAC子头中的占用1比特的E域设置为第二预设值。
  47. 根据权利要求44所述的基站，其中，利用所述每个MAC子头中携带随机接入前导序列RAPID的情况指示当前MAC subPDU是否为padding。
  48. 根据权利要求47所述的基站，其中，所述构造携带有padding指示信息的MAC RAR PDU，包括：
    若目标MAC subPDU为padding，将该目标MAC subPDU的MAC子头设置为携带有RAPID的MAC子头，且将该目标MAC subPDU的MAC子头中的RAPID设置为第三预设值。
  49. 根据权利要求44所述的基站，其中，利用所述每个MAC子头中的占用1比特的T域以及占用1比特的T1域指示当前MAC subPDU是否为 padding。
  50. 根据权利要求49所述的基站，其中，所述构造携带有padding指示信息的MAC RAR PDU，包括：
    若目标MAC subPDU为padding，将该目标MAC subPDU的MAC子头中的占用1比特的T域设置为第四预设值，且将该目标MAC subPDU的MAC子头中的占用1比特的T1域设置为第五预设值。
  51. 一种计算机可读存储介质，其上存储有程序，其中，该程序被处理器执行时实现如权利要求1至11中任一项所述的信息指示方法中的步骤；或者，该程序被处理器执行时实现如权利要求12至22中任一项所述的信息指示方法中的步骤。
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