WO2021017928A1 - 信息接收、发送方法、终端及网络设备 - Google Patents

信息接收、发送方法、终端及网络设备 Download PDF

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Publication number
WO2021017928A1
WO2021017928A1 PCT/CN2020/103100 CN2020103100W WO2021017928A1 WO 2021017928 A1 WO2021017928 A1 WO 2021017928A1 CN 2020103100 W CN2020103100 W CN 2020103100W WO 2021017928 A1 WO2021017928 A1 WO 2021017928A1
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Prior art keywords
subpdu
random access
srb
mac
success response
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PCT/CN2020/103100
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English (en)
French (fr)
Inventor
赵亚利
谌丽
曾二林
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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Publication date
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Priority to KR1020227006358A priority Critical patent/KR102953385B1/ko
Priority to EP20847736.4A priority patent/EP4007426A4/en
Priority to BR112022001275A priority patent/BR112022001275A2/pt
Priority to JP2022506316A priority patent/JP7472265B2/ja
Priority to MX2022001275A priority patent/MX2022001275A/es
Priority to US17/627,608 priority patent/US20220295542A1/en
Publication of WO2021017928A1 publication Critical patent/WO2021017928A1/zh
Anticipated expiration legal-status Critical
Priority to JP2023212894A priority patent/JP2024023700A/ja
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0836—Random access procedures, e.g. with 4-step access with 2-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to an information receiving and sending method, terminal and network equipment.
  • the base station may send multiple random access responses to the terminal, such as:
  • the terminal and the base station need to communicate further to make a radio resource control (Radio Resource Control, RRC) connection, but there is no clear plan in related technologies on how to apply the random access success response message to realize the RRC connection .
  • RRC Radio Resource Control
  • the embodiments of the present disclosure provide an information receiving and sending method, a terminal, and a network device to solve the problem in related technologies that the terminal cannot determine whether the two-step random access success response message contains SRB and cannot perform correct decoding.
  • an information receiving method applied to a terminal including:
  • the random access success response message includes indication information of whether the signaling radio bearer SRB is carried.
  • the random access success response message includes a medium access control random access response sub-protocol data unit MAC RAR subPDU, the indication The information is located in the MAC subheader of the MAC RAR subPDU, or the indication information is located in the payload of the MAC RAR subPDU;
  • the SRB is included in the payload of the MAC RAR subPDU.
  • the random access success response message includes: MAC RAR subPDU, the indication The information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • the random access success response message further includes: an SRB subPDU.
  • the random access success response message includes the random access success response of at least one terminal, and for each terminal, the random access success response
  • the MAC RAR subPDU is included in a media access control random access response sub-protocol data unit, the indication information is located in the MAC subheader of the MAC RAR subPDU, or the indication information is located in the payload of the MAC RAR subPDU;
  • the SRB is included in the payload of the MAC RAR subPDU.
  • the MAC subheader of the MAC RAR subPDU includes the first length indicator field, or the payload part of the MAC RAR subPDU includes the first length indicator field ;
  • the first length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the payload of the MAC RAR subPDU further includes: a second length indication field
  • the second length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the random access success response message includes the random access success response of at least one terminal, and for each terminal, the random access success response It includes: media access control random access response sub-protocol data unit MAC RAR subPDU, the indication information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • media access control random access response sub-protocol data unit MAC RAR subPDU media access control random access response sub-protocol data unit
  • the indication information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • the random access success response further includes: an SRB subPDU.
  • the MAC subheader of the SRB subPDU further includes a third length indication field
  • the third length indication field is used to indicate the length of the SRB subPDU.
  • the MAC sub-header when the MAC RAR sub PDU and the SRB subPDU use the same MAC sub-header, the MAC sub-header includes at least some or all of the following fields: used to indicate whether there are other extended field E fields of the MAC header, The indication MAC subheader contains the random access preamble identifier or the T field of the fallback indication and random access preamble identification information; and/or
  • the MAC subheader of the MAC RAR subPDU includes some or all of the following fields: E fields used to indicate whether there are other MAC header extension fields , It is used to indicate that the MAC subheader contains the random access preamble identifier or the T field of the backoff indication and the random access preamble identification information; the MAC subheader of the SRB subPDU includes some or all of the following fields: used to indicate Whether there is another extended field E field of the MAC header, the LCID field used to indicate the logical channel number to which the SRB belongs, the length indication field L field of the SRB subPDU, the F2 field used to indicate the length of the L field, and the reserved bit field.
  • E fields used to indicate whether there are other MAC header extension fields , It is used to indicate that the MAC subheader contains the random access preamble identifier or the T field of the backoff indication and the random access preamble identification information
  • the MAC subheader of the SRB subPDU includes some or all of the
  • the SRB satisfies at least one of the following conditions:
  • the SRB is an RRC establishment message or an RRC rejection message
  • the SRB is an RRC reestablishment message or an RRC rejection message
  • the SRB is an RRC setup message, an RRC recovery message, an RRC release message, an RRC release message carrying a suspended configuration, or an RRC reject message.
  • Some embodiments of the present disclosure also provide an information sending method, applied to a network device, including:
  • the random access success response message includes indication information of whether the signaling radio bearer SRB is carried.
  • the random access success response message includes a medium access control random access response sub-protocol data unit MAC RAR subPDU, the indication The information is located in the MAC subheader of the MAC RAR subPDU, or the indication information is located in the payload of the MAC RAR subPDU;
  • the SRB is included in the payload of the MAC RAR subPDU.
  • the random access success response message includes: MAC RAR subPDU, the indication The information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • the random access success response message further includes: an SRB subPDU.
  • the random access success response message includes the random access success response of at least one terminal, and for each terminal, the random access success response
  • the MAC RAR subPDU is included in a media access control random access response sub-protocol data unit, the indication information is located in the MAC subheader of the MAC RAR subPDU, or the indication information is located in the payload of the MAC RAR subPDU;
  • the SRB is included in the payload of the MAC RAR subPDU.
  • the MAC subheader of the MAC RAR subPDU includes the first length indicator field, or the payload part of the MAC RAR subPDU includes the first length indicator field ;
  • the first length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the payload of the MAC RAR subPDU further includes: a second length indication field
  • the second length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the random access success response message includes the random access success response of at least one terminal, and for each terminal, the random access success response It includes: media access control random access response sub-protocol data unit MAC RAR subPDU, the indication information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • media access control random access response sub-protocol data unit MAC RAR subPDU media access control random access response sub-protocol data unit
  • the indication information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • the random access success response further includes: an SRB subPDU.
  • the MAC subheader of the SRB subPDU further includes a third length indication field
  • the third length indication field is used to indicate the length of the SRB subPDU.
  • the MAC sub-header when the MAC RAR sub PDU and the SRB subPDU use the same MAC sub-header, the MAC sub-header includes at least some or all of the following fields: used to indicate whether there are other extended field E fields of the MAC header, The indication MAC subheader contains the random access preamble identifier or the T field of the fallback indication and random access preamble identification information; and/or
  • the MAC subheader of the MAC RAR subPDU includes some or all of the following fields: E fields used to indicate whether there are other MAC header extension fields , It is used to indicate that the MAC subheader contains the random access preamble identifier or the T field of the backoff indication and the random access preamble identification information; the MAC subheader of the SRB subPDU includes some or all of the following fields: used to indicate Whether there is another extended field E field of the MAC header, the LCID field used to indicate the logical channel number to which the SRB belongs, the length indication field L field of the SRB subPDU, the F2 field used to indicate the length of the L field, and the reserved bit field.
  • E fields used to indicate whether there are other MAC header extension fields , It is used to indicate that the MAC subheader contains the random access preamble identifier or the T field of the backoff indication and the random access preamble identification information
  • the MAC subheader of the SRB subPDU includes some or all of the
  • the SRB satisfies at least one of the following conditions:
  • the SRB is an RRC establishment message or an RRC rejection message
  • the SRB is an RRC reestablishment message or an RRC rejection message
  • the SRB is an RRC setup message, an RRC recovery message, an RRC release message, an RRC release message carrying a suspended configuration, or an RRC reject message.
  • Some embodiments of the present disclosure also provide a terminal, including: a memory, a processor, and a program stored on the memory and capable of running on the processor; when the processor executes the program, the following steps are implemented:
  • the random access success response message includes indication information of whether the signaling radio bearer SRB is carried.
  • the random access success response message includes a medium access control random access response sub-protocol data unit MAC RAR subPDU, the indication The information is located in the MAC subheader of the MAC RAR subPDU, or the indication information is located in the payload of the MAC RAR subPDU;
  • the SRB is included in the payload of the MAC RAR subPDU.
  • the random access success response message includes: MAC RAR subPDU, the indication The information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • the random access success response message further includes: an SRB subPDU.
  • the random access success response message includes the random access success response of at least one terminal, and for each terminal, the random access success response
  • the MAC RAR subPDU is included in a media access control random access response sub-protocol data unit, the indication information is located in the MAC subheader of the MAC RAR subPDU, or the indication information is located in the payload of the MAC RAR subPDU;
  • the SRB is included in the payload of the MAC RAR subPDU.
  • the MAC subheader of the MAC RAR subPDU includes the first length indication field, or the payload part of the MAC RAR subPDU includes the first length indication field ;
  • the first length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the payload of the MAC RAR subPDU further includes: a second length indication field
  • the second length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the random access success response message includes the random access success response of at least one terminal, and for each terminal, the random access success response It includes: media access control random access response sub-protocol data unit MAC RAR subPDU, the indication information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • media access control random access response sub-protocol data unit MAC RAR subPDU media access control random access response sub-protocol data unit
  • the indication information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • the random access success response further includes: an SRB subPDU.
  • the MAC subheader of the SRB subPDU further includes a third length indication field
  • the third length indication field is used to indicate the length of the SRB subPDU.
  • Some embodiments of the present disclosure also provide a network device, including: a memory, a processor, and a program stored on the memory and capable of running on the processor; the processor executes the following steps when the program is executed :
  • the random access success response message includes indication information of whether the signaling radio bearer SRB is carried.
  • Some embodiments of the present disclosure further provide a readable storage medium on which a program is stored, and the program is executed by a processor to implement the above-mentioned information receiving method or the above-mentioned information sending method.
  • Some embodiments of the present disclosure also provide a terminal, including:
  • the receiving module is used to receive the random access success response message of the two-step random access sent by the network device;
  • the random access success response message includes indication information of whether the signaling radio bearer SRB is carried.
  • Some embodiments of the present disclosure also provide a network device, including:
  • the sending module is used to send a random access success response message of two-step random access to the terminal;
  • the random access success response message includes indication information of whether the signaling radio bearer SRB is carried.
  • the terminal can identify whether the random access success response message contains the SRB according to the received random access success response message. SRB, so as to correctly decode the random access response message.
  • Figure 1 shows a schematic diagram of a competitive random access process in LTE and NR systems
  • Figure 2 shows a schematic diagram of the MAC sub-header format of RAR
  • Figure 3 shows a schematic diagram of the random access response MAC RAR format
  • Figure 4 shows a schematic diagram of a two-step random access process in a new generation wireless network NR system
  • FIG. 5 shows a schematic flowchart of an information receiving method according to some embodiments of the present disclosure
  • Figure 6 shows a schematic diagram of the MAC sub-header format of MAC RAR subPDU
  • Figure 7 shows one of the schematic diagrams of the format in which the payload part of the MAC RAR subPDU does not carry SRB;
  • Figure 8 shows one of the format diagrams of the SRB carried in the payload part of the MAC RAR subPDU
  • Figure 9 shows the second schematic diagram of the format in which the payload part of the MAC RAR subPDU does not carry SRB;
  • Figure 10 shows the second schematic diagram of the format of the SRB carried in the payload part of the MAC RAR subPDU
  • Figure 11 shows one of the schematic diagrams of the format of a random access success response message
  • Figure 12 shows a schematic diagram of the format of the SRB part of the SRB subPDU
  • Figure 13 shows the third schematic diagram of the format of the SRB carried in the payload part of the MAC RAR subPDU
  • Figure 14 shows the second schematic diagram of the format of a random access success response message
  • Figure 15 shows a schematic diagram of the MAC subheader format of SRB subPDU
  • FIG. 16 shows a schematic flowchart of an information sending method according to some embodiments of the present disclosure
  • FIG. 17 shows a schematic diagram of modules of a terminal according to some embodiments of the present disclosure.
  • FIG. 18 shows a structural diagram of a terminal according to some embodiments of the present disclosure.
  • FIG. 19 shows a schematic diagram of modules of a network device according to some embodiments of the present disclosure.
  • FIG. 20 shows a structural diagram of a network device of some embodiments of the present disclosure.
  • Long Term Evolution (Long Term Evolution, LTE) random access and New Radio (New Radio, NR) conventional random access are divided into two types: competitive random access and non-competitive random access.
  • competitive random access The process of competing for random access is as follows.
  • Message 1 (Msg1): User Equipment (User Equipment, UE, also called terminal) selects random access preamble and physical random access channel (Physical Random Access Channel, PRACH) resources and uses the PRACH resource to send to the base station The selected random access preamble.
  • Msg1 User Equipment (User Equipment, UE, also called terminal) selects random access preamble and physical random access channel (Physical Random Access Channel, PRACH) resources and uses the PRACH resource to send to the base station The selected random access preamble.
  • PRACH Physical Random Access Channel
  • Message 2 The base station receives the preamble and sends a random access response (RAR).
  • the random access response consists of two parts: Medium Access Control (MAC) header and MAC RAR.
  • the MAC header contains multiple subheaders, and its main content is Random Access Preamble ID (RAPID) and Backoff Indicator (BI).
  • RAPID Random Access Preamble ID
  • BI Backoff Indicator
  • Figure 2 is a schematic diagram of the MAC subheader with RAPID.
  • Figure 3 shows the MAC RAR format of the random access response, including the Time Advance Command (TAC), the uplink resource grant (UL Grant) for message three (Msg3), and the temporary cell radio network temporary identification (cell) allocated by the network side. Radio Network Temporary Identity, C-RNTI).
  • TAC Time Advance Command
  • UL Grant uplink resource grant
  • C-RNTI Radio Network Temporary Identity
  • Both the physical downlink control channel (PDCCH) carrying Msg2 scheduling information and the physical downlink shared channel (PDSCH) carrying Msg2 are scrambled with RA-RNTI, which is the only time-frequency resource for sending Msg1 within the window length of the UE receiving Msg2 correspond.
  • RA-RNTI is the only time-frequency resource for sending Msg1 within the window length of the UE receiving Msg2 correspond.
  • Msg3 The UE sends uplink transmission on the UL grant specified by Msg2.
  • the content of Msg3 uplink transmission is different for different random access reasons. For example, for initial access, Msg3 transmits a radio resource control (RRC) connection establishment request.
  • RRC radio resource control
  • the connected UE is What is sent in Msg3 is the C-RNTI MAC control element (CE).
  • CE C-RNTI MAC control element
  • Msg4 contention resolution message.
  • the UE judges whether the random access is successful according to Msg4.
  • Msg4 For idle UEs or inactive UEs, Msg4 carries the CCCH MAC CE that contains the RRC signaling content of Msg3; for connected UEs, Msg4 uses the PDCCH that uniquely identifies the C-RNTI in the UE cell for scheduling , The PDCCH can achieve contention resolution.
  • the temporary C-RNTI is converted to the unique UE identification C-RNTI of the UE in the cell after the contention is resolved successfully.
  • a two-step random access process (2-step RA) is derived on the basis of 4-step RA for competitive random access, the process is shown in Figure 4.
  • msgA is divided into preamble transmission on PRACH and data transmission on physical uplink shared channel (PUSCH), which is equivalent to Msg1 plus Msg3 of 4-step RA;
  • msgB random access response and contention resolution are equivalent to 4-step random access channel ( RACH) Msg2 plus Msg4.
  • RACH 4-step random access channel
  • the base station may send various random access responses to the UE, such as:
  • successRAR in order to further save time delay, it can be considered to carry SRB in successRAR (for example, RRC connection establishment, RRC connection reestablishment, etc.), but there is no clear plan on how to design successRAR.
  • the present disclosure provides an information receiving and sending method, terminal and network device.
  • the information receiving method of some embodiments of the present disclosure, applied to a terminal includes:
  • Step 51 Receive a random access success response message for two-step random access sent by the network device
  • the random access success response message includes indication information of whether a signaling radio bearer (SRB) is carried.
  • SRB signaling radio bearer
  • the two-step random access refers to a simplified random access process derived from the 4-step random access in the new generation wireless network NR system, which is used for competitive random access.
  • one way to carry SRB is to directly carry the specific content of SRB in the media access control random access response sub-protocol data unit (MAC RAR subPDU) of the random access success response message, and another performance
  • the form is: the SRB subPDU is carried in the random access success response message, and the SRB subPDU carries the specific content of the SRB.
  • the SRB satisfies at least one of the following conditions:
  • the SRB is an RRC setup (RRCSetup) message or an RRC reject (RRCreject) message;
  • the SRB is an RRC reestablishment message or an RRC rejection message
  • the SRB is an RRC establishment message, an RRC resume (RRC resume) message, an RRC release (RRC release) message, and an RRC release (RRC release with suspend configuration) message carrying a suspend configuration Or RRC rejects the message.
  • the random access success response message for the two-step random access of a terminal can only contain one sub-protocol data unit (subPDU), or it can be for the random access of the two-step random access of a terminal.
  • the success response message contains two subPDUs. The specific formats of the random access success response messages in these two cases are described below.
  • the random access success response message for two-step random access of a terminal contains only one subPDU
  • the random access success response message includes a medium access control random access response sub-protocol data unit (MAC RAR subPDU), and the indication information is located in the MAC subheader of the MAC RAR subPDU, or, The indication information is located in the payload of the MAC RAR subPDU;
  • MAC RAR subPDU medium access control random access response sub-protocol data unit
  • the SRB is included in the payload of the MAC RAR subPDU.
  • the indication information can be placed in the MAC subheader or the payload part.
  • the MAC subheader of the MAC RAR subPDU includes the first length indicator field, or the payload part of the MAC RAR subPDU includes the first Length indicator field;
  • the first length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the payload of the MAC RAR subPDU further includes: a second length indication field
  • the second length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • a length indication field in the MAC RAR subPDU it is used to indicate the length of the MAC RAR subPDU or the length of the SRB, so as to assist the terminal to correctly parse the SRB.
  • the random access success response message for two-step random access only contains the MAC RAR subPDU corresponding to one random access success response message.
  • the specific MAC RAR subPDU format design can be in the following two ways:
  • Manner 1 Indication information is added to the MAC subheader of the MAC RAR subPDU corresponding to the random access success response message to indicate whether the random access success response message carries SRB.
  • the MAC subheader format of the MAC RAR subPDU corresponding to the random access success response message for two-step random access is shown in Figure 6.
  • One of the R bits is used to indicate whether the random access success response message carries SRB.
  • the value of the R bit is 1, it means that SRB is carried; the value of 0 means that it does not carry SRB.
  • the existing RAPID part can also be used to indicate whether to carry SRB.
  • the payload part of the MAC RAR subPDU corresponding to the random access success response message for two-step random access contains at least the following content:
  • Timing Advance Command (Timing Advance Command);
  • C-RNTI Cell Radio Network Temporary Identity
  • N13 UE contention resolution identification
  • the payload part may also carry SRB. Whether to carry the SRB depends on the indication information in the MAC subheader of the MAC RAR subPDU. If it is indicated that it needs to be carried, it will carry the SRB; otherwise, it will not carry the SRB.
  • the possible format of the payload part is shown in Figure 7, where the R bit is added to make up the entire byte.
  • the length of the payload part is also fixed; otherwise, the length of the payload part is variable, and the specific length is related to the length of the SRB to be carried. Taking the fixed length of SRB to 48 bits as an example, the format of the payload part is shown in Figure 8.
  • Manner 2 Indication information is added to the payload part of the MAC RAR subPDU corresponding to the random access success response message to indicate whether the random access success response message carries SRB.
  • the MAC subheader format of the MAC RAR subPDU corresponding to the random access success response message of the two-step random access is consistent with the MAC subheader format of the MAC RAR subPDU in the existing protocol, as shown in Figure 2.
  • the payload part of the two-step random access response MAC RAR subPDU contains at least the following content:
  • Timing Advance Command (Timing Advance Command);
  • N24 UE contention resolution identification
  • Whether the indication information of SRB needs to be carried can be indicated by using one bit of the payload part, such as the S indication information in FIG. 9 and FIG. 10. If it is indicated that the SRB needs to be carried, the RAR also needs to carry the SRB.
  • the format of the payload part is shown in Figure 9, where the R bit is added to make up the whole byte, and the S field can be set to 0, indicating that the payload part does not need to carry SRB.
  • the length of the payload part is also fixed; otherwise, the length of the payload part is variable, and the specific length is related to the length of the SRB to be carried.
  • the format of the payload part is shown in FIG. 10, where the S field can be set to 1, indicating that the payload part needs to carry SRB.
  • the random access success response message includes: MAC RAR subPDU, the indication information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • the random access success response message further includes: an SRB subPDU.
  • the MAC subheader of the MAC RAR subPDU contains the indication information of whether there is SRB subPDU. If the indication information indicates the presence of SRB subPDU, the random access success response message should also include: SRB subPDU If the indication information indicates that there is no SRB subPDU, the random access success response message does not include the SRB subPDU.
  • the MAC subheader of the SRB subPDU further includes a third length indication field
  • the third length indication field is used to indicate the length of the SRB subPDU.
  • the MAC subheader should include a length indication field indicating the length of the SRB subPDU.
  • the MAC RAR sub PDU and the SRB sub PDU may use MAC subheaders with the same or different formats
  • the MAC sub-header when the MAC RAR sub PDU and the SRB subPDU use the same MAC sub-header, the MAC sub-header includes at least some or all of the following fields: used to indicate whether there are other extended field E fields of the MAC header, The indication MAC subheader contains the random access preamble identifier or the T field of the fallback indication and random access preamble identification information; and/or
  • the MAC subheader of the MAC RAR subPDU includes some or all of the following fields: E field used to indicate whether there are other MAC header extension fields , It is used to indicate that the MAC subheader contains the random access preamble identifier or the T field of the backoff indication and the random access preamble identification information; the MAC subheader of the SRB subPDU includes some or all of the following fields: used to indicate Whether there is another extended field E field of the MAC header, the LCID field used to indicate the logical channel number to which the SRB belongs, the length indication field L field of the SRB subPDU, the F2 field used to indicate the length of the L field, and the reserved bit field.
  • E field used to indicate whether there are other MAC header extension fields , It is used to indicate that the MAC subheader contains the random access preamble identifier or the T field of the backoff indication and the random access preamble identification information
  • the MAC subheader of the SRB subPDU includes some or all of the
  • the random access success response message of a terminal is designed into two subPDUs, namely MAC RAR subPDU and SRB subPDU.
  • the MAC RAR subPDU must appear, and whether the SRB subPDU appears is optional and can be indicated by the E bit in the MAC subheader corresponding to the first subPDU.
  • the specific format of the random access success response message is shown in Figure 11. It consists of two subPDUs, the first is MAC RAR subPDU, and the second is SRB subPDU.
  • the formats of the MAC subheader and payload part of the MAC RAR subPDU are shown in Figure 2 and Figure 7, respectively.
  • the formats of the MAC subheader and SRB part of the SRB subPDU are shown in Figure 2 and Figure 12, respectively. If the SRB length is fixed, the SRB subPDU length is also fixed; if the SRB length is variable, the SRB subPDU length is also variable of. In FIG. 12, the SRB length is 48 bits as an example for description.
  • the random access success response for the two-step random access of a terminal may contain only one sub-protocol data unit (subPDU), and the random access success response for the two-step random access of a terminal may also be Contains two subPDUs.
  • subPDU sub-protocol data unit
  • the specific formats of the random access success response in these two cases are described below.
  • the random access success response message includes a random access success response of at least one terminal, and for each terminal, the random access success response includes a medium access control random access response sub-protocol
  • the data unit MAC RAR subPDU, the indication information is located in the MAC subheader of the MAC RAR subPDU, or the indication information is located in the payload of the MAC RAR subPDU;
  • the SRB is included in the payload of the MAC RAR subPDU.
  • the indication information can be set in the MAC subheader or the payload part.
  • the different setting positions of the indication information will also affect the format of the random access success response.
  • the following specifically describes the format of the random access success response under different setting positions of the indication information.
  • the MAC subheader of the MAC RAR subPDU includes the first length indication field, or the payload part of the MAC RAR subPDU includes the first length indication field;
  • the first length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the MAC RAR subPDU should include a length indication field indicating the length of the MAC RAR subPDU or the length of the SRB.
  • the payload of the MAC RAR subPDU also includes: a second length indication field
  • the second length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the payload part should include a length indication field indicating the length of the MAC RAR subPDU or the length of the SRB.
  • the random access MAC RAR subPDUs of different terminals are allowed to be multiplexed into one MAC PDU.
  • the two-step random access response for any one of the terminals can be designed as a subPDU. There are two ways:
  • Method 1 Add indication information to the MAC subheader of the MAC RAR subPDU corresponding to the random access success response message to indicate whether the random access success response message carries the SRB; further, if the length of the SRB is variable, the MAC RAR Add a length indicator field L to the MAC subheader of the subPDU to indicate the length of the MAC RAR subPDU or the length of the SRB part of the MAC RAR subPDU; or add a length indicator field L to the payload part of the MAC RAR subPDU to indicate the MAC RAR The length of the subPDU or the length of the SRB part in the MAC RAR subPDU.
  • the MAC subheader format of the MAC RAR subPDU corresponding to the two-step random access success response of a terminal is shown in Figure 6, and one of the R bits is used to indicate whether the random access success response carries SRB.
  • the value of the R bit is 1, it means that SRB is carried; the value of 0 means that it does not carry SRB.
  • the length indicator field L can also be added to the MAC subheader of the MAC RAR subPDU.
  • the remaining R bits are used as the length indicator field to indicate the length of the MAC RAR subPDU or the SRB part of the MAC RAR subPDU. length.
  • the payload part corresponding to the two-step random access response contains at least the following content:
  • Timing Advance Command Timing Advance Command
  • SRB can also be carried. Whether the SRB is carried depends on the indication information in the MAC subheader of the MAC RAR subPDU. If it is indicated that the SRB needs to be carried, the SRB is carried; otherwise, the SRB is not carried.
  • the payload part of the MAC RAR subPDU no longer needs to carry an indication The length of the payload part in the MAC RAR subPDU or indication information indicating the length of the SRB part in the MAC RAR subPDU. Otherwise, if the MAC RAR subPDU is not the last subPDU in the MAC PDU, the payload part of the MAC RAR subPDU needs to carry length indication information indicating the length of the MAC RAR subPDU or the length of the SRB part in the MAC RAR subPDU.
  • the format of the payload part of the MAC RAR subPDU is shown in FIG. 7.
  • the RAR carries SRB and the length of the SRB is fixed, the length of the payload part is also fixed; otherwise, the length of the payload part is variable, and the specific length is related to the length of the SRB to be carried.
  • the SRB length of 48 bits as an example, the RAR format is shown in Figure 8.
  • Method 2 Add indication information to the payload part of the MAC RAR subPDU corresponding to the random access success response message to indicate whether the random access success response message carries the SRB; further, if the length of the SRB is variable, the MAC RAR subPDU is also required Add the length indication field L to the payload part of the, indicating the length of the MAC RAR subPDU or the length of the SRB part in the MAC RAR subPDU.
  • the MAC subheader format of the MAC RAR subPDU corresponding to the random access successful response of the two-step random access of a terminal is consistent with the MAC subheader of the MAC RAR subPDU in the related protocol, as shown in Figure 2.
  • the payload part of the two-step random access response MAC RAR subPDU contains at least the following content:
  • Timing Advance Command (Timing Advance Command)
  • the payload part of the MAC RAR subPDU needs to carry the SRB.
  • the possible format is shown in Figure 7, where the R bit is added to make up the entire byte.
  • One of the R bits is used to indicate whether the RAR carries SRB. For example, if the R bit is set to 0, it means that RAR may not carry SRB; otherwise, it needs to carry SRB.
  • the payload part of the MAC RAR subPDU does not carry SRB and the length of the SRB is fixed, the length of the payload part is also fixed; otherwise, the length of the payload part is variable, and the specific length is related to the length of the SRB to be carried. If the length of the SRB is variable, the payload part of the MAC RAR subPDU also needs to carry length indication information, indicating the length of the payload part of the MAC RAR subPDU or the length of the SRB part in the MAC RAR subPDU. Taking the L domain occupies 3 bits and the SRB length is 48 bits as an example, the RAR format is shown in Figure 13.
  • the random access success response message includes a random access success response of at least one terminal, and for each terminal, the random access success response includes: Medium Access Control Random Access Response sub-protocol
  • the data unit MAC RAR subPDU, the indication information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an indication field of the SRB subPDU;
  • the random access success response further includes: an SRB subPDU.
  • the MAC subheader of the SRB subPDU further includes a third length indication field
  • the third length indication field is used to indicate the length of the SRB subPDU.
  • the MAC subheader should include a length indication field indicating the length of the SRB subPDU.
  • the MAC RAR sub PDU and the SRB sub PDU may use MAC subheaders with the same or different formats
  • the MAC subheader includes: E field, T field, and random access preamble identification information;
  • the MAC subheader of the SRB subPDU includes:
  • the random access success response of a terminal is designed into two subPDUs, namely MAC RAR subPDU and SRB subPDU.
  • the MAC RAR subPDU must appear, and whether the SRB subPDU appears is optional and can be indicated by the E bit in the MAC subheader corresponding to the first subPDU.
  • the E field in the MAC subheader corresponding to the MAC RAR subPDU is used to indicate whether there is an SRB subPDU, and the two subPDUs are used to indicate that the two subPDUs are related using the same MAC subheader. If the length of the second subPDU is variable, add a length indication field to the subheader or subPDU itself for the second subPDU.
  • the MAC subheader and SubPDU format of the SRB subPDU corresponding to the SRB are shown in Figure 2 and Figure 12, and the length indication field is not required (48 bits are used as an example in Figure 12).
  • Fig. 15 is an example of a required length indication field (Fig. 15 is an example where the length of the L field is 1 byte), and the length indication field is added in the MAC subheader as an example.
  • some embodiments of the present disclosure can flexibly indicate whether the random access success response message carries SRB, and the terminal can identify whether the random access success response message contains SRB according to the received random access success response message. , So as to correctly decode the random access response message.
  • the information sending method of some embodiments of the present disclosure, applied to a network device includes:
  • Step 161 Send a random access success response message for two-step random access to the terminal;
  • the random access success response message includes indication information of whether the signaling radio bearer SRB is carried.
  • the random access success response message includes a medium access control random access response sub-protocol data unit MAC RAR subPDU, the indication The information is located in the MAC subheader of the MAC RAR subPDU, or the indication information is located in the payload of the MAC RAR subPDU;
  • the SRB is included in the payload of the MAC RAR subPDU.
  • the random access success response message includes: MAC RAR subPDU, the indication The information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • the random access success response message further includes: an SRB subPDU.
  • the random access success response message includes the random access success response of at least one terminal, and for each terminal, the random access success response
  • the MAC RAR subPDU is included in a media access control random access response sub-protocol data unit, the indication information is located in the MAC subheader of the MAC RAR subPDU, or the indication information is located in the payload of the MAC RAR subPDU;
  • the SRB is included in the payload of the MAC RAR subPDU.
  • the MAC subheader of the MAC RAR subPDU includes the first length indicator field, or the payload part of the MAC RAR subPDU includes the first length indicator field ;
  • the first length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the payload of the MAC RAR subPDU further includes: a second length indication field
  • the second length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the random access success response message includes the random access success response of at least one terminal, and for each terminal, the random access success response It includes: media access control random access response sub-protocol data unit MAC RAR subPDU, the indication information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • media access control random access response sub-protocol data unit MAC RAR subPDU media access control random access response sub-protocol data unit
  • the indication information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • the random access success response further includes: an SRB subPDU.
  • the MAC subheader of the SRB subPDU further includes a third length indication field
  • the third length indication field is used to indicate the length of the SRB subPDU.
  • the MAC sub-header when the MAC RAR sub PDU and the SRB subPDU use the same MAC sub-header, the MAC sub-header includes at least some or all of the following fields: used to indicate whether there are other extended field E fields of MAC header, The indication MAC subheader contains the random access preamble identifier or the T field of the fallback indication and random access preamble identification information; and/or
  • the MAC subheader of the MAC RAR subPDU includes some or all of the following fields: E fields used to indicate whether there are other MAC header extension fields , It is used to indicate that the MAC subheader contains the random access preamble identifier or the T field of the backoff indication and the random access preamble identification information; the MAC subheader of the SRB subPDU includes some or all of the following fields: used to indicate Whether there is another extended field E field of the MAC header, the LCID field used to indicate the logical channel number to which the SRB belongs, the length indication field L field of the SRB subPDU, the F2 field used to indicate the length of the L field, and the reserved bit field.
  • E fields used to indicate whether there are other MAC header extension fields , It is used to indicate that the MAC subheader contains the random access preamble identifier or the T field of the backoff indication and the random access preamble identification information
  • the MAC subheader of the SRB subPDU includes some or all of the
  • the SRB satisfies at least one of the following conditions:
  • the SRB is an RRC establishment message or an RRC rejection message
  • the SRB is an RRC reestablishment message or an RRC rejection message
  • the SRB is an RRC setup message, an RRC recovery message, an RRC release message, an RRC release message carrying a suspended configuration, or an RRC reject message.
  • a terminal 170 including:
  • the receiving module 171 is configured to receive a random access success response message for two-step random access sent by a network device;
  • the random access success response message includes indication information of whether the signaling radio bearer SRB is carried.
  • the random access success response message includes a medium access control random access response sub-protocol data unit MAC RAR subPDU, the indication The information is located in the MAC subheader of the MAC RAR subPDU, or the indication information is located in the payload of the MAC RAR subPDU;
  • the SRB is included in the payload of the MAC RAR subPDU.
  • the random access success response message includes: MAC RAR subPDU, the indication The information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • the random access success response message further includes: an SRB subPDU.
  • the random access success response message includes the random access success response of at least one terminal, and for each terminal, the random access success response
  • the MAC RAR subPDU is included in a media access control random access response sub-protocol data unit, the indication information is located in the MAC subheader of the MAC RAR subPDU, or the indication information is located in the payload of the MAC RAR subPDU;
  • the SRB is included in the payload of the MAC RAR subPDU.
  • the MAC subheader of the MAC RAR subPDU includes the first length indicator field, or the payload part of the MAC RAR subPDU includes the first length indicator field ;
  • the first length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the payload of the MAC RAR subPDU further includes: a second length indication field
  • the second length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the random access success response message includes the random access success response of at least one terminal, and for each terminal, the random access success response It includes: media access control random access response sub-protocol data unit MAC RAR subPDU, the indication information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • media access control random access response sub-protocol data unit MAC RAR subPDU media access control random access response sub-protocol data unit
  • the indication information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • the random access success response further includes: an SRB subPDU.
  • the MAC subheader of the SRB subPDU further includes a third length indication field
  • the third length indication field is used to indicate the length of the SRB subPDU.
  • the MAC sub-header when the MAC RAR sub PDU and the SRB subPDU use the same MAC sub-header, the MAC sub-header includes at least some or all of the following fields: used to indicate whether there are other extended field E fields of the MAC header, The indication MAC subheader contains the random access preamble identifier or the T field of the fallback indication and random access preamble identification information; and/or
  • the MAC subheader of the MAC RAR subPDU includes some or all of the following fields: E fields used to indicate whether there are other MAC header extension fields , It is used to indicate that the MAC subheader contains the random access preamble identifier or the T field of the backoff indication and the random access preamble identification information; the MAC subheader of the SRB subPDU includes some or all of the following fields: used to indicate Whether there is another extended field E field of the MAC header, the LCID field used to indicate the logical channel number to which the SRB belongs, the length indication field L field of the SRB subPDU, the F2 field used to indicate the length of the L field, and the reserved bit field.
  • E fields used to indicate whether there are other MAC header extension fields , It is used to indicate that the MAC subheader contains the random access preamble identifier or the T field of the backoff indication and the random access preamble identification information
  • the MAC subheader of the SRB subPDU includes some or all of the
  • the SRB satisfies at least one of the following conditions:
  • the SRB is an RRC establishment message or an RRC rejection message
  • the SRB is an RRC reestablishment message or an RRC rejection message
  • the SRB is an RRC setup message, an RRC recovery message, an RRC release message, an RRC release message carrying a suspended configuration, or an RRC reject message.
  • this terminal embodiment is a terminal corresponding to the foregoing method embodiment one-to-one, and all implementation manners in the foregoing method embodiment are applicable to the terminal embodiment, and the same technical effect can also be achieved.
  • some embodiments of the present disclosure also provide a terminal 180, including a processor 181, a transceiver 182, a memory 183, and a program stored on the memory 183 and running on the processor 181
  • the transceiver 182 is connected to the processor 181 and the memory 183 through a bus interface, wherein the processor 181 is used to read the program in the memory and perform the following process:
  • the random access success response message includes indication information of whether the signaling radio bearer SRB is carried.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 181 and various circuits of the memory represented by the memory 183 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein.
  • the bus interface provides the interface.
  • the transceiver 182 may be a plurality of elements, that is, including a transmitter and a transceiver, and provide a unit for communicating with various other devices on a transmission medium.
  • the user interface 184 may also be an interface capable of connecting externally and internally with required equipment.
  • the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 181 is responsible for managing the bus architecture and general processing, and the memory 183 can store data used by the processor 181 when performing operations.
  • the random access success response message includes a medium access control random access response sub-protocol data unit MAC RAR subPDU, the indication The information is located in the MAC subheader of the MAC RAR subPDU, or the indication information is located in the payload of the MAC RAR subPDU;
  • the SRB is included in the payload of the MAC RAR subPDU.
  • the random access success response message includes: MAC RAR subPDU, the indication The information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • the random access success response message further includes: SRB subPDU.
  • the random access success response message includes the random access success response of at least one terminal, and for each terminal, the random access success response
  • the MAC RAR subPDU is included in a media access control random access response sub-protocol data unit, the indication information is located in the MAC subheader of the MAC RAR subPDU, or the indication information is located in the payload of the MAC RAR subPDU;
  • the SRB is included in the payload of the MAC RAR subPDU.
  • the MAC subheader of the MAC RAR subPDU includes the first length indicator field, or the payload part of the MAC RAR subPDU includes the first length indicator field ;
  • the first length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the payload of the MAC RAR subPDU further includes: a second length indication field
  • the second length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the random access success response message includes the random access success response of at least one terminal, and for each terminal, the random access success response It includes: media access control random access response sub-protocol data unit MAC RAR subPDU, the indication information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • media access control random access response sub-protocol data unit MAC RAR subPDU media access control random access response sub-protocol data unit
  • the indication information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • the random access success response further includes: an SRB subPDU.
  • the MAC subheader of the SRB subPDU further includes a third length indication field
  • the third length indication field is used to indicate the length of the SRB subPDU.
  • the MAC sub-header when the MAC RAR sub PDU and the SRB subPDU use the same MAC sub-header, the MAC sub-header includes at least some or all of the following fields: used to indicate whether there are other extended field E fields of the MAC header, The indication MAC subheader contains the random access preamble identifier or the T field of the fallback indication and random access preamble identification information; and/or
  • the MAC subheader of the MAC RAR subPDU includes some or all of the following fields: E fields used to indicate whether there are other MAC header extension fields , It is used to indicate that the MAC subheader contains the random access preamble identifier or the T field of the backoff indication and the random access preamble identification information; the MAC subheader of the SRB subPDU includes some or all of the following fields: used to indicate Whether there is another extended field E field of the MAC header, the LCID field used to indicate the logical channel number to which the SRB belongs, the length indication field L field of the SRB subPDU, the F2 field used to indicate the length of the L field, and the reserved bit field.
  • E fields used to indicate whether there are other MAC header extension fields , It is used to indicate that the MAC subheader contains the random access preamble identifier or the T field of the backoff indication and the random access preamble identification information
  • the MAC subheader of the SRB subPDU includes some or all of the
  • the SRB satisfies at least one of the following conditions:
  • the SRB is an RRC establishment message or an RRC rejection message
  • the SRB is an RRC reestablishment message or an RRC rejection message
  • the SRB is an RRC setup message, an RRC recovery message, an RRC release message, an RRC release message carrying a suspended configuration, or an RRC reject message.
  • Some embodiments of the present disclosure further provide a readable storage medium on which a program is stored, wherein the program is executed by the processor to implement the steps of the information receiving method applied to the terminal.
  • a network device 190 including:
  • the sending module 191 is configured to send a random access success response message for two-step random access to the terminal;
  • the random access success response message includes indication information of whether the signaling radio bearer SRB is carried.
  • the random access success response message includes a medium access control random access response sub-protocol data unit MAC RAR subPDU, the indication The information is located in the MAC subheader of the MAC RAR subPDU, or the indication information is located in the payload of the MAC RAR subPDU;
  • the SRB is included in the payload of the MAC RAR subPDU.
  • the random access success response message includes: MAC RAR subPDU, the indication The information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • the random access success response message further includes: an SRB subPDU.
  • the random access success response message includes the random access success response of at least one terminal, and for each terminal, the random access success response
  • the MAC RAR subPDU is included in a media access control random access response sub-protocol data unit, the indication information is located in the MAC subheader of the MAC RAR subPDU, or the indication information is located in the payload of the MAC RAR subPDU;
  • the SRB is included in the payload of the MAC RAR subPDU.
  • the MAC subheader of the MAC RAR subPDU includes the first length indicator field, or the payload part of the MAC RAR subPDU includes the first length indicator field ;
  • the first length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the payload of the MAC RAR subPDU further includes: a second length indication field
  • the second length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the random access success response message includes the random access success response of at least one terminal, and for each terminal, the random access success response It includes: media access control random access response sub-protocol data unit MAC RAR subPDU, the indication information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • media access control random access response sub-protocol data unit MAC RAR subPDU media access control random access response sub-protocol data unit
  • the indication information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • the random access success response further includes: SRB subPDU.
  • the MAC subheader of the SRB subPDU further includes a third length indication field
  • the third length indication field is used to indicate the length of the SRB subPDU.
  • the MAC sub-header when the MAC RAR sub PDU and the SRB subPDU use the same MAC sub-header, the MAC sub-header includes at least some or all of the following fields: used to indicate whether there are other extended field E fields of the MAC header, The indication MAC subheader contains the random access preamble identifier or the T field of the fallback indication and random access preamble identification information; and/or
  • the MAC subheader of the MAC RAR subPDU includes some or all of the following fields: E fields used to indicate whether there are other MAC header extension fields , It is used to indicate that the MAC subheader contains the random access preamble identifier or the T field of the backoff indication and the random access preamble identification information; the MAC subheader of the SRB subPDU includes some or all of the following fields: used to indicate Whether there is another extended field E field of the MAC header, the LCID field used to indicate the logical channel number to which the SRB belongs, the length indication field L field of the SRB subPDU, the F2 field used to indicate the length of the L field, and the reserved bit field.
  • E fields used to indicate whether there are other MAC header extension fields , It is used to indicate that the MAC subheader contains the random access preamble identifier or the T field of the backoff indication and the random access preamble identification information
  • the MAC subheader of the SRB subPDU includes some or all of the
  • the SRB satisfies at least one of the following conditions:
  • the SRB is an RRC establishment message or an RRC rejection message
  • the SRB is an RRC reestablishment message or an RRC rejection message
  • the SRB is an RRC setup message, an RRC recovery message, an RRC release message, an RRC release message carrying a suspended configuration, or an RRC reject message.
  • the network device embodiment is a network device corresponding to the foregoing method embodiment one-to-one, and all implementation manners in the foregoing method embodiment are applicable to the network device embodiment, and the same technical effect can also be achieved.
  • some embodiments of the present disclosure also provide a network device 200, including a processor 201, a transceiver 202, a memory 203, and a device stored on the memory 203 and capable of running on the processor 201 Program;
  • the transceiver 202 is connected to the processor 201 and the memory 203 through a bus interface, where the processor 201 is used to read the program in the memory and perform the following process:
  • the random access success response message includes indication information of whether the signaling radio bearer SRB is carried.
  • the bus architecture may include any number of interconnected buses and bridges, and specifically one or more processors represented by the processor 201 and various circuits of the memory represented by the memory 203 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein.
  • the bus interface provides the interface.
  • the transceiver 202 may be a plurality of elements, including a transmitter and a transceiver, and provide a unit for communicating with various other devices on a transmission medium.
  • the processor 201 is responsible for managing the bus architecture and general processing, and the memory 203 can store data used by the processor 201 when performing operations.
  • the random access success response message includes a medium access control random access response sub-protocol data unit MAC RAR subPDU, the indication The information is located in the MAC subheader of the MAC RAR subPDU, or the indication information is located in the payload of the MAC RAR subPDU;
  • the SRB is included in the payload of the MAC RAR subPDU.
  • the random access success response message includes: MAC RAR subPDU, the indication The information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • the random access success response message further includes: an SRB subPDU.
  • the random access success response message includes the random access success response of at least one terminal, and for each terminal, the random access success response
  • the MAC RAR subPDU is included in a media access control random access response sub-protocol data unit, the indication information is located in the MAC subheader of the MAC RAR subPDU, or the indication information is located in the payload of the MAC RAR subPDU;
  • the SRB is included in the payload of the MAC RAR subPDU.
  • the MAC subheader of the MAC RAR subPDU includes the first length indicator field, or the payload part of the MAC RAR subPDU includes the first length indicator field ;
  • the first length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the payload of the MAC RAR subPDU further includes: a second length indication field
  • the second length indication field is used to indicate the length of the MAC RAR subPDU or the length of the SRB in the MAC RAR subPDU.
  • the random access success response message includes the random access success response of at least one terminal, and for each terminal, the random access success response It includes: media access control random access response sub-protocol data unit MAC RAR subPDU, the indication information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • media access control random access response sub-protocol data unit MAC RAR subPDU media access control random access response sub-protocol data unit
  • the indication information is located in the MAC subheader of the MAC RAR subPDU, and the indication information is used to indicate whether there is an SRB subPDU;
  • the random access success response further includes: an SRB subPDU.
  • the MAC subheader of the SRB subPDU further includes a third length indication field
  • the third length indication field is used to indicate the length of the SRB subPDU.
  • the MAC sub-header when the MAC RAR sub PDU and the SRB subPDU use the same MAC sub-header, the MAC sub-header includes at least some or all of the following fields: used to indicate whether there are other extended field E fields of the MAC header, The indication MAC subheader contains the random access preamble identifier or the T field of the fallback indication and random access preamble identification information; and/or
  • the MAC subheader of the MAC RAR subPDU includes some or all of the following fields: E field used to indicate whether there are other MAC header extension fields , It is used to indicate that the MAC subheader contains the random access preamble identifier or the T field of the backoff indication and the random access preamble identification information; the MAC subheader of the SRB subPDU includes some or all of the following fields: used to indicate Whether there is another extended field E field of the MAC header, the LCID field used to indicate the logical channel number to which the SRB belongs, the length indication field L field of the SRB subPDU, the F2 field used to indicate the length of the L field, and the reserved bit field.
  • E field used to indicate whether there are other MAC header extension fields , It is used to indicate that the MAC subheader contains the random access preamble identifier or the T field of the backoff indication and the random access preamble identification information
  • the MAC subheader of the SRB subPDU includes some or all of the
  • the SRB satisfies at least one of the following conditions:
  • the SRB is an RRC establishment message or an RRC rejection message
  • the SRB is an RRC reestablishment message or an RRC rejection message
  • the SRB is an RRC setup message, an RRC recovery message, an RRC release message, an RRC release message carrying a suspended configuration, or an RRC reject message.
  • the network equipment can be the base station (Base Transceiver Station, referred to as BTS) in Global System of Mobile Communications (GSM) or Code Division Multiple Access (Code Division Multiple Access, referred to as CDMA), or it can be a broadband code
  • BTS Base Transceiver Station
  • GSM Global System of Mobile Communications
  • CDMA Code Division Multiple Access
  • the base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA) may also be an evolved base station (Evolutional NodeB, eNB or eNodeB) in LTE, or a relay station or an access point.
  • a base station ng-NB Next Generation Node B
  • CU centralized control unit
  • DU distributed control unit
  • Some embodiments of the present disclosure also provide a readable storage medium on which a program is stored, wherein the program is executed by the processor to implement the steps of the information sending method applied to the network device.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present disclosure.
  • the aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.
  • the program can be stored in a computer readable storage medium. During execution, it may include the procedures of the above-mentioned method embodiments.
  • the storage medium may be a magnetic disk, an optical disc, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM), etc.
  • modules, units, sub-modules, sub-units, etc. can be implemented in one or more application specific integrated circuits (ASICs), digital signal processors (Digital Signal Processing, DSP), digital signal processing equipment ( DSP Device, DSPD), Programmable Logic Device (PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, Other electronic units or combinations thereof that perform the functions described in this application.
  • ASICs application specific integrated circuits
  • DSP Digital Signal Processing
  • DSP Device digital signal processing equipment
  • PLD Programmable Logic Device
  • Field-Programmable Gate Array Field-Programmable Gate Array
  • FPGA Field-Programmable Gate Array
  • the technology described in some embodiments of the present disclosure can be implemented by modules (for example, procedures, functions, etc.) that perform the functions described in some embodiments of the present disclosure.
  • the software codes can be stored in the memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.
  • the purpose of the present disclosure can also be realized by running a program or a group of programs on any computing device.
  • the computing device may be a well-known general-purpose device. Therefore, the purpose of the present disclosure can also be achieved only by providing a program product containing program code for implementing the method or device. That is, such a program product also constitutes the present disclosure, and a storage medium storing such a program product also constitutes the present disclosure.
  • the storage medium may be any well-known storage medium or any storage medium developed in the future. It should also be pointed out that, in the device and method of the present disclosure, obviously, each component or each step can be decomposed and/or recombined.

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Abstract

本公开提供了一种信息接收、发送方法、终端及网络设备,涉及通信技术领域。信息接收方法,应用于终端,包括:接收网络设备发送的两步随机接入的随机接入成功响应消息;其中,所述随机接入成功响应消息中包含是否携带信令无线承载SRB的指示信息。

Description

信息接收、发送方法、终端及网络设备
相关申请的交叉引用
本申请主张在2019年7月29日在中国提交的中国专利申请号No.201910690618.8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,特别涉及一种信息接收、发送方法、终端及网络设备。
背景技术
在两步随机接入过程中,基站可能会给终端发送多种随机接入响应,比如:
随机接入成功响应(successRAR)、回退到4步随机接入响应(fallbackRAR)。
在随机接入成功后,终端和基站需要进一步通信,以进行无线资源控制(Radio Resource Control,RRC)连接,但是相关技术中对如何应用随机接入成功响应消息以实现RRC连接并没有明确的方案。
发明内容
本公开实施例提供一种信息接收、发送方法、终端及网络设备,以解决相关技术中终端无法确定两步随机接入成功响应消息中是否包含SRB,无法进行正确解码的问题。
为了解决上述技术问题,本公开的一些实施例提供一种信息接收方法,应用于终端,包括:
接收网络设备发送的两步随机接入的随机接入成功响应消息;
其中,所述随机接入成功响应消息中包含是否携带信令无线承载SRB的指示信息。
可选地,当不同终端的随机接入成功响应消息不允许复用时,所述随机 接入成功响应消息中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
可选地,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应消息中还包括:SRB subPDU。
可选地,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
进一步地,在所述指示信息位于MAC RAR subPDU的MAC子头时,所述MAC RAR subPDU的MAC子头中包括第一长度指示域,或者,MAC RAR subPDU的净荷部分包括第一长度指示域;
其中,所述第一长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
进一步地,在所述指示信息位于MAC RAR subPDU的净荷中时,所述MAC RAR subPDU的净荷中还包括:第二长度指示域;
其中,所述第二长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
可选地,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端, 所述随机接入成功响应中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应中还包括:SRB subPDU。
进一步地,在所述指示信息指示存在SRB subPDU时,所述SRB subPDU的MAC子头中还包括第三长度指示域;
其中,所述第三长度指示域用于指示SRB subPDU的长度。
具体地,当所述MAC RAR sub PDU和SRB subPDU使用具有相同的MAC子头,所述MAC子头至少包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;和/或
当所述MAC RAR sub PDU和SRB subPDU使用具有不同格式的MAC子头时,所述MAC RAR subPDU的MAC子头包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;所述SRB subPDU的MAC子头包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示所述SRB归属的逻辑信道编号LCID域、SRB subPDU的长度指示域L域、用于指示L域长度的F2域和预留比特域。
具体地,所述SRB满足以下情况中的至少一项:
在消息A中包含无线资源控制RRC连接建立消息时,所述SRB为RRC建立消息或RRC拒绝消息;
在消息A中包含RRC连接重建消息时,所述SRB为RRC重建消息或RRC拒绝消息;
在消息A中包含RRC恢复请求消息时,所述SRB为RRC建立消息、RRC恢复消息、RRC释放消息、携带挂起配置的RRC释放消息或RRC拒绝消息。
本公开的一些实施例还提供一种信息发送方法,应用于网络设备,包括:
向终端发送两步随机接入的随机接入成功响应消息;
其中,所述随机接入成功响应消息中包含是否携带信令无线承载SRB的指示信息。
可选地,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
可选地,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应消息中还包括:SRB subPDU。
可选地,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
进一步地,在所述指示信息位于MAC RAR subPDU的MAC子头时,所述MAC RAR subPDU的MAC子头中包括第一长度指示域,或者,MAC RAR subPDU的净荷部分包括第一长度指示域;
其中,所述第一长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
进一步地,在所述指示信息位于MAC RAR subPDU的净荷中时,所述MAC RAR subPDU的净荷中还包括:第二长度指示域;
其中,所述第二长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
可选地,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应中还包括:SRB subPDU。
进一步地,在所述指示信息指示存在SRB subPDU时,所述SRB subPDU的MAC子头中还包括第三长度指示域;
其中,所述第三长度指示域用于指示SRB subPDU的长度。
具体地,当所述MAC RAR sub PDU和SRB subPDU使用具有相同的MAC子头,所述MAC子头至少包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;和/或
当所述MAC RAR sub PDU和SRB subPDU使用具有不同格式的MAC子头时,所述MAC RAR subPDU的MAC子头包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;所述SRB subPDU的MAC子头包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示所述SRB归属的逻辑信道编号LCID域、SRB subPDU的长度指示域L域、用于指示L域长度的F2域和预留比特域。
具体地,所述SRB满足以下情况中的至少一项:
在消息A中包含无线资源控制RRC连接建立消息时,所述SRB为RRC建立消息或RRC拒绝消息;
在消息A中包含RRC连接重建消息时,所述SRB为RRC重建消息或RRC拒绝消息;
在消息A中包含RRC恢复请求消息时,所述SRB为RRC建立消息、RRC恢复消息、RRC释放消息、携带挂起配置的RRC释放消息或RRC拒绝消息。
本公开的一些实施例还提供一种终端,包括: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;所述处理器执行所述程序时实现以下步骤:
接收网络设备发送的两步随机接入的随机接入成功响应消息;
其中,所述随机接入成功响应消息中包含是否携带信令无线承载SRB的指示信息。
可选地,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
可选地,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应消息中还包括:SRB subPDU。
可选地,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
进一步地,在所述指示信息位于MAC RAR subPDU的MAC子头时, 所述MAC RAR subPDU的MAC子头中包括第一长度指示域,或者,MAC RAR subPDU的净荷部分包括第一长度指示域;
其中,所述第一长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
进一步地,在所述指示信息位于MAC RAR subPDU的净荷中时,所述MAC RAR subPDU的净荷中还包括:第二长度指示域;
其中,所述第二长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
可选地,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应中还包括:SRB subPDU。
进一步地,在所述指示信息指示存在SRB subPDU时,所述SRB subPDU的MAC子头中还包括第三长度指示域;
其中,所述第三长度指示域用于指示SRB subPDU的长度。
本公开的一些实施例还提供一种网络设备,包括: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;所述处理器执行所述程序时实现以下步骤:
向终端发送两步随机接入的随机接入成功响应消息;
其中,所述随机接入成功响应消息中包含是否携带信令无线承载SRB的指示信息。
本公开的一些实施例还提供一种可读存储介质,其上存储有程序,所述程序被处理器执行时实现如上述的信息接收方法或上述的信息发送方法。
本公开的一些实施例还提供一种终端,包括:
接收模块,用于接收网络设备发送的两步随机接入的随机接入成功响应消息;
其中,所述随机接入成功响应消息中包含是否携带信令无线承载SRB的指示信息。
本公开的一些实施例还提供一种网络设备,包括:
发送模块,用于向终端发送两步随机接入的随机接入成功响应消息;
其中,所述随机接入成功响应消息中包含是否携带信令无线承载SRB的指示信息。
本公开的有益效果是:
上述方案,通过在两步随机接入的随机接入成功响应消息中包含是否携带SRB的指示信息,终端根据接收到的随机接入成功响应消息,能够识别所述随机接入成功响应消息是否包含SRB,从而对随机接入响应消息进行正确的解码。
附图说明
图1表示LTE和NR系统中的竞争随机接入过程示意图;
图2表示RAR的MAC子头格式示意图;
图3表示随机接入响应MAC RAR格式示意图;
图4表示新一代无线网络NR系统中的两步随机接入过程示意图;
图5表示本公开的一些实施例的信息接收方法的流程示意图;
图6表示MAC RAR subPDU的MAC子头格式示意图;
图7表示MAC RAR subPDU的净荷部分不携带SRB的格式示意图之一;
图8表示MAC RAR subPDU的净荷部分携带SRB的格式示意图之一;
图9表示MAC RAR subPDU的净荷部分不携带SRB的格式示意图之二;
图10表示MAC RAR subPDU的净荷部分携带SRB的格式示意图之二;
图11表示随机接入成功响应消息的格式示意图之一;
图12表示SRB subPDU的SRB部分格式示意图;
图13表示MAC RAR subPDU的净荷部分携带SRB的格式示意图之三;
图14表示随机接入成功响应消息的格式示意图之二;
图15表示SRB subPDU的MAC子头格式示意图;
图16表示本公开的一些实施例的信息发送方法的流程示意图;
图17表示本公开的一些实施例的终端的模块示意图;
图18表示本公开的一些实施例的终端的结构图;
图19表示本公开的一些实施例的网络设备的模块示意图;以及
图20表示本公开的一些实施例的网络设备的结构图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚,下面将结合附图及具体实施例对本公开进行详细描述。
首先对本公开的一些实施例中所提到的一些概念进行说明如下。
长期演进(Long Term Evolution,LTE)的随机接入和新空口(New Radio,NR)的常规随机接入分为竞争随机接入和非竞争随机接入两种。其中竞争随机接入的过程如下。
竞争随机接入过程如图1所示,分为四步,称为4步随机接入(Random Access,RA):
消息一(Msg1):用户设备(User Equipment,UE,也称终端)选择随机接入前导码(preamble)和物理随机接入信道(Physical Random Access Channel,PRACH)资源并利用该PRACH资源向基站发送所选的随机接入preamble。
消息二(Msg2):基站接收到preamble,发送随机接入响应(RAR)。随机接入响应包含两部分:媒体接入控制(Medium Access Control,MAC)头和MAC RAR。MAC头包含多个子头,其主要内容随机接入前导码ID(Random Access Preamble ID,RAPID)和回退参数(Backoff Indicator,BI),图2为带RAPID的MAC子头示意图。图3为随机接入响应MAC RAR格式,包括定时提前量(Time Advance Command,TAC)、针对消息三(Msg3)的上行资源授权(UL Grant)和网络侧分配的临时小区无线网络临时标识(cell Radio Network Temporary Identity,C-RNTI)。承载Msg2调度信息的物理下行控制信道(PDCCH)和承载Msg2的物理下行共享信道(PDSCH)都用RA-RNTI加扰,RA-RNTI在UE接收Msg2的窗长内与发送Msg1的时频资源唯一对应。UE接收Msg2时,通过RA-RNTI和preamble ID确定该Msg2是与其发 送的Msg1对应的。
Msg3:UE在Msg2指定的UL grant上发送上行传输,不同随机接入原因Msg3上行传输的内容不同,比如对于初始接入,Msg3传输的是无线资源控制(RRC)连接建立请求,连接态UE在Msg3中发送的是C-RNTI MAC控制元素(CE)。总之,Msg3发送的是UE特有标识,用于基站最终唯一确定UE。
消息四(Msg4):竞争解决消息,UE根据Msg4判断随机接入是否成功。对空闲态(idle)UE或非激活态(inactive)UE,Msg4携带的包含Msg3的RRC信令内容的CCCH MAC CE;对于连接态UE,Msg4用UE小区内唯一标识C-RNTI的PDCCH进行调度,该PDCCH即可实现竞争解决。对于空闲态终端(idle UE)或非激活态终端(inactive UE),竞争解决成功后临时C-RNTI转化为UE在该小区的唯一UE标识C-RNTI。
在新一代无线网络NR系统中,在4步RA基础上引申出两步随机接入过程(2步RA)用于竞争随机接入,其过程如图4。其中msgA分为PRACH上的preamble传输和物理上行共享信道(PUSCH)上的数据传输,相当于4步RA的Msg1加Msg3;msgB随机接入响应和竞争解决,相当于4步随机接入信道(RACH)中的Msg2加Msg4。因为msgB中包含有UE竞争解决信息,其大小必然与Msg2不同。
在图4所示的两步随机接入过程中,基站可能会给UE发送多种随机接入响应,比如:
随机接入成功响应(successRAR);
回退到4-step响应(fallbackRAR)。
对于successRAR,为了进一步节省时延,可以考虑在successRAR中携带SRB(比如,RRC连接建立,RRC连接重建等消息),但是如何设计successRAR尚没有明确方案。
本公开针对上述的问题,提供一种信息接收、发送方法、终端及网络设备。
如图5所示,本公开的一些实施例的信息接收方法,应用于终端,包括:
步骤51,接收网络设备发送的两步随机接入的随机接入成功响应消息;
其中,所述随机接入成功响应消息中包含是否携带信令无线承载(SRB)的指示信息。
需要说明的是,该两步随机接入指的是新一代无线网络NR系统中,在4步随机接入基础上引申出的简化的随机接入过程,用于竞争随机接入。
需要说明的是,携带SRB的一种表现方式为直接在随机接入成功响应消息的媒体接入控制随机接入响应子协议数据单元(MAC RAR subPDU)中携带SRB的具体内容,另一种表现形式为:在随机接入成功响应消息中携带SRB subPDU,SRB subPDU中携带SRB的具体内容。
在指示信息指示携带SRB时,所述SRB满足以下情况中的至少一项:
在消息A中包含无线资源控制RRC连接建立消息时,所述SRB为RRC建立(RRCSetup)消息或RRC拒绝(RRC reject)消息;
在消息A中包含RRC连接重建消息时,所述SRB为RRC重建(RRCreestablishment)消息或RRC拒绝消息;
在消息A中包含RRC恢复请求消息时,所述SRB为RRC建立消息、RRC恢复(RRC resume)消息、RRC释放(RRC release)消息、携带挂起配置的RRC释放(RRC release with suspend configuration)消息或RRC拒绝消息。
下面分别在不同终端的随机接入成功响应消息不允许复用(指的是,一个随机接入成功响应消息仅针对一个终端)和不同终端的随机接入成功响应消息允许复用(指的是,一个随机接入成功响应消息可以针对至少一个终端)的情况下,对随机接入成功响应消息的具体格式进行说明如下。
一、不同终端的随机接入成功响应消息不允许复用
在此种情况下,可以针对一个终端的两步随机接入的随机接入成功响应消息可以仅包含一个子协议数据单元(subPDU),也可以针对一个终端的两步随机接入的随机接入成功响应消息包含两个subPDU,下面分别对这两种情况下的随机接入成功响应消息的具体格式进行说明如下。
A11、针对一个终端的两步随机接入的随机接入成功响应消息仅包含一个subPDU
在此种情况下,所述随机接入成功响应消息中包括一个媒体接入控制随 机接入响应子协议数据单元(MAC RAR subPDU),所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
需要说明的是,因MAC RAR subPDU包括MAC子头和净荷部分(也可以称为净荷),该指示信息既可以放在MAC子头中,也可以放在净荷部分。
进一步需要说明的是,在所述指示信息位于MAC RAR subPDU的MAC子头时,所述MAC RAR subPDU的MAC子头中包括第一长度指示域,或者,MAC RAR subPDU的净荷部分包括第一长度指示域;
其中,所述第一长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
进一步需要说明的是,在所述指示信息位于MAC RAR subPDU的净荷中时,所述MAC RAR subPDU的净荷中还包括:第二长度指示域;
其中,所述第二长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
需要说明的是,通过在MAC RAR subPDU中携带长度指示域,用于指示MAC RAR subPDU的长度或SRB的长度,以辅助终端能够正确解析该SRB。
下面对此种情况下的具体应用进行举例说明如下。
两步随机接入的随机接入成功响应消息中仅包含一个随机接入成功响应消息对应的MAC RAR subPDU,具体的MAC RAR subPDU格式设计可以有如下两种方式:
方式1:随机接入成功响应消息对应的MAC RAR subPDU的MAC子头中增加指示信息指示所述随机接入成功响应消息中是否携带SRB。
该方式下,两步随机接入的随机接入成功响应消息对应的MAC RAR subPDU的MAC子头格式举例如图6所示,利用其中的一个R比特指示该随机接入成功响应消息中是否携带SRB。比如R比特取值为1,则表示携带SRB;取值为0表示不携带SRB。当然,如果两步随机成功响应消息不需要携带 PRAPID,也可以用现有RAPID部分指示是否携带SRB。
两步随机接入的随机接入成功响应消息对应的MAC RAR subPDU中的净荷部分至少包含如下内容:
N11、定时提前命令(Timing Advance Command);
N12、小区无线网络临时标识(C-RNTI);
N13、UE竞争解决标识;
可选地,净荷部分还可以携带SRB。具体是否携带SRB,取决于MAC RAR subPDU的MAC子头中的指示信息,如果指示需要携带,则携带SRB;否则,不携带SRB。
如果净荷部分不携带SRB,则净荷部分可能的格式如图7所示,其中,R比特添加是为了凑足整字节。
如果净荷部分携带SRB,且SRB长度是固定的,则净荷部分长度也是固定的;否则,净荷部分长度是可变的,具体长度与要携带的SRB长度有关。以SRB长度固定为48比特为例,净荷部分的格式如图8所示。
方式2:随机接入成功响应消息对应的MAC RAR subPDU的净荷部分增加指示信息指示所述随机接入成功响应消息中是否携带SRB。
该方式下,两步随机接入的随机接入成功响应消息对应的MAC RAR subPDU的MAC子头格式和现有协议中的MAC RAR subPDU的MAC子头格式一致,如图2所示。
两步随机接入响应MAC RAR subPDU的净荷部分至少包含如下内容:
N21、是否携带SRB的指示信息;
N22、定时提前命令(Timing Advance Command);
N23、C-RNTI;
N24、UE竞争解决标识;
是否需要携带SRB的指示信息可以利用净荷部分的一个比特进行指示,比如图9和图10中的S指示信息。如果指示需要携带SRB,则所述RAR中还需要携带SRB。
如果净荷部分不携带SRB,则净荷部分格式如图9所示,其中,R比特添加是为了凑足整字节,其中,S域可以设置为0,指示净荷部分不需要携带 SRB。
如果净荷部分携带SRB,且SRB长度是固定的,则净荷部分长度也是固定的;否则,净荷部分长度是可变的,具体长度与要携带的SRB长度有关。以SRB长度固定为48比特为例,净荷部分的格式示如图10所示,其中S域可以设置为1,指示所述净荷部分需要携带SRB。
A12、针对一个终端的两步随机接入的随机接入成功响应消息设置两个subPDU
在此种情况下,所述随机接入成功响应消息中包括:MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应消息中还包括:SRB subPDU。
需要说明的是,此种情况下,MAC RAR subPDU的MAC子头中包含是否存在SRB subPDU的指示信息,若该指示信息指示存在SRB subPDU,则随机接入成功响应消息中还应当包括:SRB subPDU,若该指示信息指示不存在SRB subPDU,则随机接入成功响应消息中不包括SRB subPDU。
进一步地,在所述指示信息指示存在SRB subPDU时,所述SRB subPDU的MAC子头中还包括第三长度指示域;
其中,所述第三长度指示域用于指示SRB subPDU的长度。
需要说明的是,在SRB的长度不固定时,为了使得终端能够正确解析该SRB,MAC子头应当包含指示SRB subPDU的长度的长度指示域。
需要说明的是,所述MAC RAR sub PDU和SRB subPDU可以使用具有相同或不同格式的MAC子头;
具体地,当所述MAC RAR sub PDU和SRB subPDU使用具有相同的MAC子头,所述MAC子头至少包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;和/或
当所述MAC RAR sub PDU和SRB subPDU使用具有不同格式的MAC子头时,所述MAC RAR subPDU的MAC子头包括如下部分或者全部域: 用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;所述SRB subPDU的MAC子头包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示所述SRB归属的逻辑信道编号LCID域、SRB subPDU的长度指示域L域、用于指示L域长度的F2域和预留比特域。
下面对此种情况下的具体应用进行举例说明如下。
一个终端的随机接入成功响应消息设计成两个subPDU,即MAC RAR subPDU和SRB subPDU。其中MAC RAR subPDU必须出现,SRB subPDU是否出现是可选的,可以通过第一个subPDU对应的MAC子头中的E比特指示。
具体的随机接入成功响应消息的格式如图11所示,其由两个subPDU组成,第一个是MAC RAR subPDU,第二个是SRB subPDU。
其中:
MAC RAR subPDU的MAC子头和净荷部分的格式分别如图2和图7所示。SRB subPDU的MAC子头和SRB部分格式分别如图2和图12所示,如果SRB长度是固定的,则SRB subPDU长度也是固定的;如果SRB长度是可变的,则SRB subPDU长度也是可变的。图12中是以SRB长度为48比特为例进行说明的。
二、不同终端的随机接入成功响应消息允许复用
在此种情况下,针对一个终端的两步随机接入的随机接入成功响应可以仅包含一个子协议数据单元(subPDU),针对一个终端的两步随机接入的随机接入成功响应也可以包含两个subPDU,下面分别对这两种情况下的随机接入成功响应的具体格式进行说明如下。
B11、针对一个终端的两步随机接入的随机接入成功响应设置一个subPDU
在此种情况下,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于 MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
需要说明的是,因一个终端的MAC RAR subPDU包括MAC子头和净荷部分,该指示信息既可以设置在MAC子头中,也可以设置在净荷部分。
需要说明的是,因指示信息的设置位置不同,也会对随机接入成功响应的格式造成影响,下面分别对指示信息的不同设置位置下的随机接入成功响应的格式进行具体说明如下。
B111、在所述指示信息位于MAC RAR subPDU的MAC子头时
在此种情况下,所述MAC RAR subPDU的MAC子头中包括第一长度指示域,或者,MAC RAR subPDU的净荷部分包括第一长度指示域;
其中,所述第一长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
需要说明的是,在SRB的长度不固定时,为了使得终端能够正确解析该SRB,MAC RAR subPDU中应当包含指示MAC RAR subPDU的长度或SRB的长度的长度指示域。
B112、在所述指示信息位于MAC RAR subPDU的净荷中时
在此种情况下,所述MAC RAR subPDU的净荷中还包括:第二长度指示域;
其中,所述第二长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
需要说明的是,在SRB的长度不固定时,为了使得终端能够正确解析该SRB,净荷部分应当包含指示MAC RAR subPDU的长度或SRB的长度的长度指示域。
下面对此种情况下的具体应用进行举例说明如下。
不同终端的随机接入的MAC RAR subPDU允许复用成一个MAC PDU。针对其中任何一个终端的两步随机接入响应可以设计成一个subPDU。具体有两种方式:
方式1:在随机接入成功响应消息对应的MAC RAR subPDU的MAC子头中增加指示信息指示所述随机接入成功响应消息中是否携带SRB;进一步,如果SRB长度可变,还需要在MAC RAR subPDU的MAC子头中增加长度指示域L,用于指示MAC RAR subPDU的长度或者MAC RAR subPDU中SRB部分的长度;或者在MAC RAR subPDU的净荷部分增加长度指示域L,用于指示MAC RAR subPDU的长度或者MAC RAR subPDU中SRB部分的长度。
该方式下,一个终端的两步随机接入的随机接入成功响应对应的MAC RAR subPDU的MAC子头格式如图6所示,利用其中的一个R比特指示该随机接入成功响应中是否携带SRB。比如R比特取值为1,则表示携带SRB;取值为0表示不携带SRB。进一步,如果SRB长度可变,还可以在MAC RAR subPDU的MAC子头中增加长度指示域L,比如利用剩余的R比特作为长度指示域,指示MAC RAR subPDU的长度或者MAC RAR subPDU中SRB部分的长度。
两步随机接入响应对应的净荷部分至少包含如下内容:
M11、定时提前命令(Timing Advance Command);
M12、C-RNTI;
M13、UE竞争解决标识;
可选地,还可以携带SRB。具体是否携带SRB,取决于MAC RAR subPDU的MAC子头中的指示信息,如果指示需要携带SRB,则携带SRB;否则,不携带SRB。
如果MAC RAR subPDU的MAC子头中携带了指示MAC RAR subPDU中的净荷部分的长度或者指示MAC RAR subPDU中的SRB部分的长度的指示信息,则MAC RAR subPDU的净荷部分不再需要携带指示MAC RAR subPDU中的净荷部分的长度或者指示MAC RAR subPDU中的SRB部分的长度的指示信息。否则,如果所述MAC RAR subPDU不是MAC PDU中的最后一个subPDU,则在所述MAC RAR subPDU的净荷部分需要携带指示MAC RAR subPDU的长度或者MAC RAR subPDU中SRB部分的长度的长度指示信息。
以MAC RAR subPDU的净荷部分不包含指示MAC RAR subPDU的长度或者MAC RAR subPDU中SRB部分的长度的长度指示信息为例,MAC RAR subPDU的净荷部分的格式如图7所示。
如果RAR携带SRB,且SRB长度是固定的,则净荷部分长度也是固定的;否则,净荷部分长度是可变的,具体长度与要携带的SRB长度有关。以SRB长度为48比特为例,RAR格式如图8所示。
方式2:在随机接入成功响应消息对应的MAC RAR subPDU的净荷部分增加指示信息指示所述随机接入成功响应消息中是否携带SRB;进一步,如果SRB长度可变,还需要在MAC RAR subPDU的净荷部分增加长度指示域L,指示MAC RAR subPDU的长度或者MAC RAR subPDU中SRB部分的长度。
该方式下,针对一个终端的两步随机接入的随机接入成功响应对应的MAC RAR subPDU的MAC子头格式和相关协议中的MAC RAR subPDU的MAC子头如下一致,如图2所示。
两步随机接入响应MAC RAR subPDU的净荷部分至少包含如下内容:
M21、是否携带SRB的指示信息;
M22、定时提前命令(Timing Advance Command);
M23、C-RNTI;
M24、UE竞争解决标识;
如果是否携带SRB的指示信息指示需要携带SRB,则所述MAC RAR subPDU的净荷部分需要携带SRB。
如果MAC RAR subPDU的净荷部分不携带SRB,则可能的格式如图7所示,其中,R比特添加是为了凑足整字节。利用其中一个R比特指示所述RAR中是否携带有SRB。比如如果所述R比特设置为0,则表示RAR可以不携带SRB;否则,需要携带SRB。
如果MAC RAR subPDU的净荷部分不携带SRB,且SRB长度是固定的,则净荷部分长度也是固定的;否则,净荷部分长度是可变的,具体长度与要携带的SRB长度有关。如果SRB长度可变,那么MAC RAR subPDU的净荷部分还需要携带长度指示信息,指示MAC RAR subPDU的净荷部分 的长度或者MAC RAR subPDU中SRB部分的长度。以L域占用3比特,SRB长度为48比特为例,RAR格式如图13所示。
B12、针对一个终端的两步随机接入的随机接入成功响应消息设置两个subPDU
在此种情况下,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU的指示域;
其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应中还包括:SRB subPDU。
进一步地,在所述指示信息指示存在SRB subPDU时,所述SRB subPDU的MAC子头中还包括第三长度指示域;
其中,所述第三长度指示域用于指示SRB subPDU的长度。
需要说明的是,在SRB的长度不固定时,为了使得终端能够正确解析该SRB,MAC子头应当包含指示SRB subPDU的长度的长度指示域。
需要说明的是,所述MAC RAR sub PDU和SRB subPDU可以使用具有相同或不同格式的MAC子头;
进一步地,当所述MAC RAR sub PDU和SRB subPDU使用具有相同的MAC子头,所述MAC子头包括:E域、T域和随机接入前导码标识信息;
当所述MAC RAR sub PDU和SRB subPDU使用具有不同格式的MAC子头时,所述SRB subPDU的MAC子头包括:
下面对此种情况下的具体应用进行举例说明如下。
一个终端的随机接入成功响应设计成两个subPDU,即MAC RAR subPDU和SRB subPDU。其中MAC RAR subPDU必须出现,SRB subPDU是否出现是可选的,可以通过第一个subPDU对应的MAC子头中的E比特指示。利用MAC RAR subPDU对应的MAC子头中的E域指示是否存在SRB subPDU,利用两个subPDU使用相同的MAC子头指示两个subPDU是相关联的。如果第二个subPDU长度是可变的,那么针对第二个subPDU在其子 头或者subPDU自身增加长度指示域。
具体的随机接入成功响应消息格式如图14所示。
其中MAC RAR subPDU的MAC子头和RAR格式示意图分别如图2和图7所示。
如果SRB长度固定,那么SRB对应的SRB subPDU的MAC子头和SubPDU格式如图2和图12所示,不需要长度指示域(图12中是以48bit为例)。
如果SRB长度可变,那么SRB对应的SRB subPDU的MAC子头和subPDU格式如图15和图12所示。图15是以需要长度指示域(图15是以L域长度为1byte为例),且在MAC子头中增加长度指示域为例。
需要说明的是,本公开的一些实施例可以灵活指示随机接入成功响应消息是否携带了SRB,终端根据接收到的随机接入成功响应消息,能够识别所述随机接入成功响应消息是否包含SRB,从而对随机接入响应消息进行正确的解码。
如图16所示,本公开的一些实施例的信息发送方法,应用于网络设备,包括:
步骤161,向终端发送两步随机接入的随机接入成功响应消息;
其中,所述随机接入成功响应消息中包含是否携带信令无线承载SRB的指示信息。
可选地,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
可选地,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应消息中还包括:SRB subPDU。
可选地,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
进一步地,在所述指示信息位于MAC RAR subPDU的MAC子头时,所述MAC RAR subPDU的MAC子头中包括第一长度指示域,或者,MAC RAR subPDU的净荷部分包括第一长度指示域;
其中,所述第一长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
进一步地,在所述指示信息位于MAC RAR subPDU的净荷中时,所述MAC RAR subPDU的净荷中还包括:第二长度指示域;
其中,所述第二长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
可选地,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应中还包括:SRB subPDU。
进一步地,在所述指示信息指示存在SRB subPDU时,所述SRB subPDU的MAC子头中还包括第三长度指示域;
其中,所述第三长度指示域用于指示SRB subPDU的长度。
具体地,当所述MAC RAR sub PDU和SRB subPDU使用具有相同的 MAC子头,所述MAC子头至少包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;和/或
当所述MAC RAR sub PDU和SRB subPDU使用具有不同格式的MAC子头时,所述MAC RAR subPDU的MAC子头包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;所述SRB subPDU的MAC子头包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示所述SRB归属的逻辑信道编号LCID域、SRB subPDU的长度指示域L域、用于指示L域长度的F2域和预留比特域。
具体地,所述SRB满足以下情况中的至少一项:
在消息A中包含无线资源控制RRC连接建立消息时,所述SRB为RRC建立消息或RRC拒绝消息;
在消息A中包含RRC连接重建消息时,所述SRB为RRC重建消息或RRC拒绝消息;
在消息A中包含RRC恢复请求消息时,所述SRB为RRC建立消息、RRC恢复消息、RRC释放消息、携带挂起配置的RRC释放消息或RRC拒绝消息。
需要说明的是,上述实施例中所有关于网络设备的描述均适用于该信息发送方法的实施例中,也能达到与之相同的技术效果。
如图17所示,本公开的一些实施例提供一种终端170,包括:
接收模块171,用于接收网络设备发送的两步随机接入的随机接入成功响应消息;
其中,所述随机接入成功响应消息中包含是否携带信令无线承载SRB的指示信息。
可选地,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头, 或者,所述指示信息位于MAC RAR subPDU的净荷中;
其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
可选地,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应消息中还包括:SRB subPDU。
可选地,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
进一步地,在所述指示信息位于MAC RAR subPDU的MAC子头时,所述MAC RAR subPDU的MAC子头中包括第一长度指示域,或者,MAC RAR subPDU的净荷部分包括第一长度指示域;
其中,所述第一长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
进一步地,在所述指示信息位于MAC RAR subPDU的净荷中时,所述MAC RAR subPDU的净荷中还包括:第二长度指示域;
其中,所述第二长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
可选地,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头 中,所述指示信息用于指示是否存在SRB subPDU;
其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应中还包括:SRB subPDU。
进一步地,在所述指示信息指示存在SRB subPDU时,所述SRB subPDU的MAC子头中还包括第三长度指示域;
其中,所述第三长度指示域用于指示SRB subPDU的长度。
具体地,当所述MAC RAR sub PDU和SRB subPDU使用具有相同的MAC子头,所述MAC子头至少包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;和/或
当所述MAC RAR sub PDU和SRB subPDU使用具有不同格式的MAC子头时,所述MAC RAR subPDU的MAC子头包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;所述SRB subPDU的MAC子头包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示所述SRB归属的逻辑信道编号LCID域、SRB subPDU的长度指示域L域、用于指示L域长度的F2域和预留比特域。
具体地,所述SRB满足以下情况中的至少一项:
在消息A中包含无线资源控制RRC连接建立消息时,所述SRB为RRC建立消息或RRC拒绝消息;
在消息A中包含RRC连接重建消息时,所述SRB为RRC重建消息或RRC拒绝消息;
在消息A中包含RRC恢复请求消息时,所述SRB为RRC建立消息、RRC恢复消息、RRC释放消息、携带挂起配置的RRC释放消息或RRC拒绝消息。
需要说明的是,该终端实施例是与上述方法实施例一一对应的终端,上述方法实施例中所有实现方式均适用于该终端的实施例中,也能达到相同的技术效果。
如图18所示,本公开的一些实施例还提供一种终端180,包括处理器181、收发机182、存储器183及存储在所述存储器183上并可在所述处理器181上运行的程序;其中,收发机182通过总线接口与处理器181和存储器183连接,其中,所述处理器181用于读取存储器中的程序,执行下列过程:
通过收发机182接收网络设备发送的两步随机接入的随机接入成功响应消息;
其中,所述随机接入成功响应消息中包含是否携带信令无线承载SRB的指示信息。
需要说明的是,在图18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181代表的一个或多个处理器和存储器183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182可以是多个元件,即包括发送机和收发机,提供用于在传输介质上与各种其他装置通信的单元。针对不同的发送端,用户接口184还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。处理器181负责管理总线架构和通常的处理,存储器183可以存储处理器181在执行操作时所使用的数据。
可选地,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
可选地,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响 应消息中还包括:SRB subPDU。
可选地,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
进一步地,在所述指示信息位于MAC RAR subPDU的MAC子头时,所述MAC RAR subPDU的MAC子头中包括第一长度指示域,或者,MAC RAR subPDU的净荷部分包括第一长度指示域;
其中,所述第一长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
进一步地,在所述指示信息位于MAC RAR subPDU的净荷中时,所述MAC RAR subPDU的净荷中还包括:第二长度指示域;
其中,所述第二长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
可选地,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应中还包括:SRB subPDU。
进一步地,在所述指示信息指示存在SRB subPDU时,所述SRB subPDU的MAC子头中还包括第三长度指示域;
其中,所述第三长度指示域用于指示SRB subPDU的长度。
具体地,当所述MAC RAR sub PDU和SRB subPDU使用具有相同的MAC子头,所述MAC子头至少包括如下部分或者全部域:用于指示是否还 存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;和/或
当所述MAC RAR sub PDU和SRB subPDU使用具有不同格式的MAC子头时,所述MAC RAR subPDU的MAC子头包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;所述SRB subPDU的MAC子头包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示所述SRB归属的逻辑信道编号LCID域、SRB subPDU的长度指示域L域、用于指示L域长度的F2域和预留比特域。
具体地,所述SRB满足以下情况中的至少一项:
在消息A中包含无线资源控制RRC连接建立消息时,所述SRB为RRC建立消息或RRC拒绝消息;
在消息A中包含RRC连接重建消息时,所述SRB为RRC重建消息或RRC拒绝消息;
在消息A中包含RRC恢复请求消息时,所述SRB为RRC建立消息、RRC恢复消息、RRC释放消息、携带挂起配置的RRC释放消息或RRC拒绝消息。
本公开的一些实施例还提供一种可读存储介质,其上存储有程序,其中,所述程序被处理器执行时实现应用于终端的信息接收方法的步骤。
如图19所示,本公开的一些实施例提供一种网络设备190,包括:
发送模块191,用于向终端发送两步随机接入的随机接入成功响应消息;
其中,所述随机接入成功响应消息中包含是否携带信令无线承载SRB的指示信息。
可选地,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR  subPDU的净荷中。
可选地,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应消息中还包括:SRB subPDU。
可选地,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
进一步地,在所述指示信息位于MAC RAR subPDU的MAC子头时,所述MAC RAR subPDU的MAC子头中包括第一长度指示域,或者,MAC RAR subPDU的净荷部分包括第一长度指示域;
其中,所述第一长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
进一步地,在所述指示信息位于MAC RAR subPDU的净荷中时,所述MAC RAR subPDU的净荷中还包括:第二长度指示域;
其中,所述第二长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
可选地,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响 应中还包括:SRB subPDU。
进一步地,在所述指示信息指示存在SRB subPDU时,所述SRB subPDU的MAC子头中还包括第三长度指示域;
其中,所述第三长度指示域用于指示SRB subPDU的长度。
具体地,当所述MAC RAR sub PDU和SRB subPDU使用具有相同的MAC子头,所述MAC子头至少包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;和/或
当所述MAC RAR sub PDU和SRB subPDU使用具有不同格式的MAC子头时,所述MAC RAR subPDU的MAC子头包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;所述SRB subPDU的MAC子头包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示所述SRB归属的逻辑信道编号LCID域、SRB subPDU的长度指示域L域、用于指示L域长度的F2域和预留比特域。
具体地,所述SRB满足以下情况中的至少一项:
在消息A中包含无线资源控制RRC连接建立消息时,所述SRB为RRC建立消息或RRC拒绝消息;
在消息A中包含RRC连接重建消息时,所述SRB为RRC重建消息或RRC拒绝消息;
在消息A中包含RRC恢复请求消息时,所述SRB为RRC建立消息、RRC恢复消息、RRC释放消息、携带挂起配置的RRC释放消息或RRC拒绝消息。
需要说明的是,该网络设备实施例是与上述方法实施例一一对应的网络设备,上述方法实施例中所有实现方式均适用于该网络设备的实施例中,也能达到相同的技术效果。
如图20所示,本公开的一些实施例还提供一种网络设备200,包括处理器201、收发机202、存储器203及存储在所述存储器203上并可在所述处理 器201上运行的程序;其中,收发机202通过总线接口与处理器201和存储器203连接,其中,所述处理器201用于读取存储器中的程序,执行下列过程:
通过收发机202向终端发送两步随机接入的随机接入成功响应消息;
其中,所述随机接入成功响应消息中包含是否携带信令无线承载SRB的指示信息。
需要说明的是,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201代表的一个或多个处理器和存储器203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202可以是多个元件,即包括发送机和收发机,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201负责管理总线架构和通常的处理,存储器203可以存储处理器201在执行操作时所使用的数据。
可选地,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
可选地,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应消息中还包括:SRB subPDU。
可选地,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括一个媒体接入控制随机接入响应子协议数据单 元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
进一步地,在所述指示信息位于MAC RAR subPDU的MAC子头时,所述MAC RAR subPDU的MAC子头中包括第一长度指示域,或者,MAC RAR subPDU的净荷部分包括第一长度指示域;
其中,所述第一长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
进一步地,在所述指示信息位于MAC RAR subPDU的净荷中时,所述MAC RAR subPDU的净荷中还包括:第二长度指示域;
其中,所述第二长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
可选地,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应中还包括:SRB subPDU。
进一步地,在所述指示信息指示存在SRB subPDU时,所述SRB subPDU的MAC子头中还包括第三长度指示域;
其中,所述第三长度指示域用于指示SRB subPDU的长度。
具体地,当所述MAC RAR sub PDU和SRB subPDU使用具有相同的MAC子头,所述MAC子头至少包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;和/或
当所述MAC RAR sub PDU和SRB subPDU使用具有不同格式的MAC子头时,所述MAC RAR subPDU的MAC子头包括如下部分或者全部域: 用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;所述SRB subPDU的MAC子头包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示所述SRB归属的逻辑信道编号LCID域、SRB subPDU的长度指示域L域、用于指示L域长度的F2域和预留比特域。
具体地,所述SRB满足以下情况中的至少一项:
在消息A中包含无线资源控制RRC连接建立消息时,所述SRB为RRC建立消息或RRC拒绝消息;
在消息A中包含RRC连接重建消息时,所述SRB为RRC重建消息或RRC拒绝消息;
在消息A中包含RRC恢复请求消息时,所述SRB为RRC建立消息、RRC恢复消息、RRC释放消息、携带挂起配置的RRC释放消息或RRC拒绝消息。
其中,网络设备可以是全球移动通讯(Global System of Mobile communication,简称GSM)或码分多址(Code Division Multiple Access,简称CDMA)中的基站(Base Transceiver Station,简称BTS),也可以是宽带码分多址(Wideband Code Division Multiple Access,简称WCDMA)中的基站(NodeB,简称NB),还可以是LTE中的演进型基站(Evolutional Node B,简称eNB或eNodeB),或者中继站或接入点,或者未来5G网络中的基站ng-NB(Next Generation Node B)或者集中控制单元(Central Unit,CU)或者分布式控制单元(Distribute Unit,DU)等,在此并不限定。
本公开的一些实施例还提供一种可读存储介质,其上存储有程序,其中,所述程序被处理器执行时实现应用于网络设备的信息发送方法的步骤。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本公开的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的实施例中,应该理解到,所揭露的装置和方法,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。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
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存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本公开的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品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方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程,是可以通过计算机程序来控制相关的硬件来完成,所述的程序可存储于一计算机可读取存储介质中,该程序在执行时,可包括如上述各方法的实施例的流程。其中,所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only  Memory,ROM)或随机存储记忆体(Random Access Memory,RAM)等。
可以理解的是,本公开的一些实施例描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现,模块、单元、子模块、子单元等可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits,ASIC)、数字信号处理器(Digital Signal Processing,DSP)、数字信号处理设备(DSP Device,DSPD)、可编程逻辑设备(Programmable Logic Device,PLD)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本申请所述功能的其它电子单元或其组合中。
对于软件实现,可通过执行本公开的一些实施例所述功能的模块(例如过程、函数等)来实现本公开的一些实施例所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
因此,本公开的目的还可以通过在任何计算装置上运行一个程序或者一组程序来实现。所述计算装置可以是公知的通用装置。因此,本公开的目的也可以仅仅通过提供包含实现所述方法或者装置的程序代码的程序产品来实现。也就是说,这样的程序产品也构成本公开,并且存储有这样的程序产品的存储介质也构成本公开。显然,所述存储介质可以是任何公知的存储介质或者将来所开发出来的任何存储介质。还需要指出的是,在本公开的装置和方法中,显然,各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且,执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行,但是并不需要一定按照时间顺序执行。某些步骤可以并行或彼此独立地执行。
以上所述的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人员来说,在不脱离本公开所述的原理前提下还可以作出若干改进和润饰,这些改进和润饰也在本公开的保护范围内。

Claims (40)

  1. 一种信息接收方法,应用于终端,包括:
    接收网络设备发送的两步随机接入的随机接入成功响应消息;
    其中,所述随机接入成功响应消息中包含是否携带信令无线承载SRB的指示信息。
  2. 根据权利要求1所述的信息接收方法,其中,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
    其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
  3. 根据权利要求1所述的信息接收方法,其中,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
    其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应消息中还包括:SRB subPDU。
  4. 根据权利要求1所述的信息接收方法,其中,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
    其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
  5. 根据权利要求2或4所述的信息接收方法,其中,在所述指示信息位 于MAC RAR subPDU的MAC子头时,所述MAC RAR subPDU的MAC子头中包括第一长度指示域,或者,MAC RAR subPDU的净荷部分包括第一长度指示域;
    其中,所述第一长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
  6. 根据权利要求2或4所述的信息接收方法,其中,在所述指示信息位于MAC RAR subPDU的净荷中时,所述MAC RAR subPDU的净荷中还包括:第二长度指示域;
    其中,所述第二长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
  7. 根据权利要求1所述的信息接收方法,其中,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
    其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应中还包括:SRB subPDU。
  8. 根据权利要求3或7所述的信息接收方法,其中,在所述指示信息指示存在SRB subPDU时,所述SRB subPDU的MAC子头中还包括第三长度指示域;
    其中,所述第三长度指示域用于指示SRB subPDU的长度。
  9. 根据权利要求3或7所述的信息接收方法,其中,当所述MAC RAR sub PDU和SRB subPDU使用具有相同的MAC子头,所述MAC子头至少包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;和/或
    当所述MAC RAR sub PDU和SRB subPDU使用具有不同格式的MAC子头时,所述MAC RAR subPDU的MAC子头包括如下部分或者全部域: 用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;所述SRB subPDU的MAC子头包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示所述SRB归属的逻辑信道编号LCID域、SRB subPDU的长度指示域L域、用于指示L域长度的F2域和预留比特域。
  10. 根据权利要求1所述的信息接收方法,其中,所述SRB满足以下情况中的至少一项:
    在消息A中包含无线资源控制RRC连接建立消息时,所述SRB为RRC建立消息或RRC拒绝消息;
    在消息A中包含RRC连接重建消息时,所述SRB为RRC重建消息或RRC拒绝消息;
    在消息A中包含RRC恢复请求消息时,所述SRB为RRC建立消息、RRC恢复消息、RRC释放消息、携带挂起配置的RRC释放消息或RRC拒绝消息。
  11. 一种信息发送方法,应用于网络设备,包括:
    向终端发送两步随机接入的随机接入成功响应消息;
    其中,所述随机接入成功响应消息中包含是否携带信令无线承载SRB的指示信息。
  12. 根据权利要求11所述的信息发送方法,其中,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
    其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
  13. 根据权利要求11所述的信息发送方法,其中,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位 于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
    其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应消息中还包括:SRB subPDU。
  14. 根据权利要求11所述的信息发送方法,其中,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
    其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
  15. 根据权利要求12或14所述的信息发送方法,其中,在所述指示信息位于MAC RAR subPDU的MAC子头时,所述MAC RAR subPDU的MAC子头中包括第一长度指示域,或者,MAC RAR subPDU的净荷部分包括第一长度指示域;
    其中,所述第一长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
  16. 根据权利要求12或14所述的信息发送方法,其中,在所述指示信息位于MAC RAR subPDU的净荷中时,所述MAC RAR subPDU的净荷中还包括:第二长度指示域;
    其中,所述第二长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
  17. 根据权利要求11所述的信息发送方法,其中,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
    其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应中还包括:SRB subPDU。
  18. 根据权利要求13或17所述的信息发送方法,其中,在所述指示信息指示存在SRB subPDU时,所述SRB subPDU的MAC子头中还包括第三长度指示域;
    其中,所述第三长度指示域用于指示SRB subPDU的长度。
  19. 根据权利要求13或17所述的信息发送方法,其中,当所述MAC RAR sub PDU和SRB subPDU使用具有相同的MAC子头,所述MAC子头至少包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;和/或
    当所述MAC RAR sub PDU和SRB subPDU使用具有不同格式的MAC子头时,所述MAC RAR subPDU的MAC子头包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示MAC子头包含的是随机接入前导码标识或回退指示的T域和随机接入前导码标识信息;所述SRB subPDU的MAC子头包括如下部分或者全部域:用于指示是否还存在其他MAC头的扩展域E域、用于指示所述SRB归属的逻辑信道编号LCID域、SRB subPDU的长度指示域L域、用于指示L域长度的F2域和预留比特域。
  20. 根据权利要求11所述的信息发送方法,其中,所述SRB满足以下情况中的至少一项:
    在消息A中包含无线资源控制RRC连接建立消息时,所述SRB为RRC建立消息或RRC拒绝消息;
    在消息A中包含RRC连接重建消息时,所述SRB为RRC重建消息或RRC拒绝消息;
    在消息A中包含RRC恢复请求消息时,所述SRB为RRC建立消息、RRC恢复消息、RRC释放消息、携带挂起配置的RRC释放消息或RRC拒绝消息。
  21. 一种终端,包括: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,所述处理器执行所述程序时实现以下步骤:
    接收网络设备发送的两步随机接入的随机接入成功响应消息;
    其中,所述随机接入成功响应消息中包含是否携带信令无线承载SRB的指示信息。
  22. 根据权利要求21所述的终端,其中,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
    其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
  23. 根据权利要求21所述的终端,其中,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
    其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应消息中还包括:SRB subPDU。
  24. 根据权利要求21所述的终端,其中,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
    其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
  25. 根据权利要求22或24所述的终端,其中,在所述指示信息位于MAC RAR subPDU的MAC子头时,所述MAC RAR subPDU的MAC子头中包括第一长度指示域,或者,MAC RAR subPDU的净荷部分包括第一长度指示域;
    其中,所述第一长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
  26. 根据权利要求22或24所述的终端,其中,在所述指示信息位于MAC RAR subPDU的净荷中时,所述MAC RAR subPDU的净荷中还包括:第二长度指示域;
    其中,所述第二长度指示域用于指示MAC RAR subPDU的长度或MAC RAR subPDU中SRB的长度。
  27. 根据权利要求21所述的终端,其中,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
    其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应中还包括:SRB subPDU。
  28. 根据权利要求23或27所述的终端,其中,在所述指示信息指示存在SRB subPDU时,所述SRB subPDU的MAC子头中还包括第三长度指示域;
    其中,所述第三长度指示域用于指示SRB subPDU的长度。
  29. 一种网络设备,包括: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,所述处理器执行所述程序时实现以下步骤:
    向终端发送两步随机接入的随机接入成功响应消息;
    其中,所述随机接入成功响应消息中包含是否携带信令无线承载SRB的指示信息。
  30. 一种可读存储介质,其上存储有程序,其中,所述程序被处理器执行时实现如权利要求1至10任一项所述的信息接收方法或如权利要求11至20任一项所述的信息发送方法。
  31. 一种终端,包括:
    接收模块,用于接收网络设备发送的两步随机接入的随机接入成功响应消息;
    其中,所述随机接入成功响应消息中包含是否携带信令无线承载SRB的指示信息。
  32. 根据权利要求31所述的终端,其中,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
    其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
  33. 根据权利要求31所述的终端,其中,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
    其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应消息中还包括:SRB subPDU。
  34. 根据权利要求31所述的终端,其中,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
    其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
  35. 根据权利要求31所述的终端,其中,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于 MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
    其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应中还包括:SRB subPDU。
  36. 一种网络设备,包括:
    发送模块,用于向终端发送两步随机接入的随机接入成功响应消息;
    其中,所述随机接入成功响应消息中包含是否携带信令无线承载SRB的指示信息。
  37. 根据权利要求36所述的网络设备,其中,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
    其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR subPDU的净荷中。
  38. 根据权利要求36所述的网络设备,其中,当不同终端的随机接入成功响应消息不允许复用时,所述随机接入成功响应消息中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
    其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应消息中还包括:SRB subPDU。
  39. 根据权利要求36所述的网络设备,其中,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括一个媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头,或者,所述指示信息位于MAC RAR subPDU的净荷中;
    其中,在所述指示信息指示存在SRB时,所述SRB包含在所述MAC RAR  subPDU的净荷中。
  40. 根据权利要求36所述的网络设备,其中,当不同终端的随机接入成功响应消息允许复用时,所述随机接入成功响应消息包括至少一个终端的随机接入成功响应,针对每一个终端,所述随机接入成功响应中包括:媒体接入控制随机接入响应子协议数据单元MAC RAR subPDU,所述指示信息位于MAC RAR subPDU的MAC子头中,所述指示信息用于指示是否存在SRB subPDU;
    其中,在所述指示信息指示存在SRB subPDU时,所述随机接入成功响应中还包括:SRB subPDU。
PCT/CN2020/103100 2019-07-29 2020-07-20 信息接收、发送方法、终端及网络设备 Ceased WO2021017928A1 (zh)

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