WO2022236748A1 - 随机接入方法和装置、通信装置和计算机可读存储介质 - Google Patents

随机接入方法和装置、通信装置和计算机可读存储介质 Download PDF

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Publication number
WO2022236748A1
WO2022236748A1 PCT/CN2021/093429 CN2021093429W WO2022236748A1 WO 2022236748 A1 WO2022236748 A1 WO 2022236748A1 CN 2021093429 W CN2021093429 W CN 2021093429W WO 2022236748 A1 WO2022236748 A1 WO 2022236748A1
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Prior art keywords
random access
terminal
bsr
triggering
condition
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PCT/CN2021/093429
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English (en)
French (fr)
Inventor
江小威
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北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to CN202180001468.0A priority Critical patent/CN113455052B/zh
Priority to PCT/CN2021/093429 priority patent/WO2022236748A1/zh
Publication of WO2022236748A1 publication Critical patent/WO2022236748A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0278—Traffic management, e.g. flow control or congestion control using buffer status reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information

Definitions

  • the present disclosure relates to the technical field of communication, and specifically, to a random access method, a random access device, a communication device, and a computer-readable storage medium.
  • the terminal When the terminal triggers the buffer status report (Buffer Status Report, BSR), if there is no available uplink shared channel (UpLink Shared CHannel, UL-SCH) resource that can be used to send the BSR, it can trigger a scheduling request (Scheduling Request, SR) to request Uplink shared channel resources, if there is no available uplink control channel resource for sending SR, the terminal can initiate random access (Random Access, RA).
  • BSR buffer Status Report
  • SR scheduling request
  • RA Random Access
  • embodiments of the present disclosure propose a random access method, a random access device, a communication device, and a computer-readable storage medium, so as to solve technical problems in related technologies.
  • a random access method is proposed, which is executed by a terminal, and the method includes: when the terminal triggers a buffer status report BSR, determining whether the terminal satisfies random access triggering condition; triggering random access when the terminal satisfies the triggering condition of random access.
  • the triggering random access includes: determining whether there are available uplink shared channel UL-SCH resources that can be used for new transmission; if there is no available UL-SCH resource that can be used for new transmission, Trigger random access.
  • the triggering random access includes: determining whether the UL-SCH resource satisfies the logical channel priority operation of the logical channel LC that triggers the BSR An LCP mapping restriction condition; when the UL-SCH resource does not meet the LCP mapping restriction condition of the LC triggering the BSR, random access is triggered.
  • the terminal is configured with unlicensed uplink resources
  • the triggering random access includes: determining the status of the logical channel scheduling request mask of the LC triggering the BSR; When the status of the logical channel scheduling request mask is wrong, random access is triggered.
  • the method further includes: triggering a scheduling request SR when the terminal does not meet the trigger condition.
  • the triggering SR includes: determining whether there are available uplink shared channel UL-SCH resources that can be used for new transmission; if there is no available UL-SCH resource that can be used for new transmission, triggering SR .
  • the triggering SR includes: determining whether the UL-SCH resource satisfies the logical channel priority operation LCP mapping of the logical channel LC that triggers the BSR Restriction condition: when the UL-SCH resource does not satisfy the LCP mapping restriction condition of the LC that triggers the BSR, an SR is triggered.
  • the terminal is configured with unlicensed uplink resources
  • the triggering SR includes: determining the logical channel scheduling request mask status of the LC triggering the BSR; When the request mask status is wrong, an SR is triggered.
  • the triggering condition of the random access includes at least one of the following: the LC that triggers the BSR is configured to allow random access or two-step random access when the BSR is triggered; triggering the BSR The LC is configured to prohibit the retransmission of HARQ; the quality of service of the LC that triggers the BSR does not meet the specified quality of service; the terminal-specific round-trip delay in the non-terrestrial network NTN does not meet The delay condition; the distance from the terminal to at least one of the satellite, the reference point, and the base station in the NTN does not meet the distance condition; the time domain and/or frequency domain compensation performed by the terminal meets the compensation requirement.
  • the random access trigger condition includes a two-step random access trigger condition.
  • triggering random access when the terminal satisfies the trigger condition of random access, includes: when the terminal meets the trigger condition of two-step random access, triggering two-step random access access.
  • the method further includes: when the terminal does not meet the trigger condition of the two-step random access, triggering four-step random access or triggering SR.
  • the trigger condition of the two-step random access includes at least one of the following: the LC that triggers the BSR is configured to trigger two-step random access when the BSR is triggered; the LC that triggers the BSR It is configured to prohibit the retransmission of uplink hybrid automatic reswitch request HARQ; the service quality of the LC that triggers the BSR does not meet the specified service quality; the channel quality does not meet the quality condition; the terminal-specific round-trip of the terminal in the non-terrestrial network NTN The delay does not meet the delay condition; the distance from the terminal to at least one of the satellite, reference point, and base station in the NTN does not meet the distance condition; the time domain and/or frequency domain compensation performed by the terminal meets the compensation requirements; The terminal is configured with resources for two-step random access.
  • the terminal is in an unconnected state, and when the terminal satisfies the triggering condition of two-step random access, triggering two-step random access includes: when the terminal satisfies two-step random access If the trigger condition of the random access is met, and the access category triggering the random access satisfies the target condition, the two-step random access is triggered; otherwise, the four-step follow-up access is triggered.
  • the target condition includes at least one of the following: according to the broadcast message of the base station, it is determined that the access category is configured to use two-step random access; Indicates that the access class is configured to use two-step random access.
  • the trigger condition of the two-step random access includes at least one of the following: the quality of service of the LC triggering the BSR does not meet the specified quality of service; the channel quality does not meet the quality condition; the terminal is not on the ground
  • the terminal-specific round-trip delay in the network NTN does not meet the delay condition; the distance from the terminal to at least one of the satellite, reference point, and base station in the NTN does not meet the distance condition; the time domain and/or frequency performed by the terminal Domain compensation meets the compensation requirement; it is determined that there are available resources for two-step random access according to the broadcast message of the base station.
  • the BSR is a conventional BSR.
  • a random access device includes: a processing module configured to determine whether a trigger condition for random access is met when a buffer status report (BSR) is triggered; The processing module is further configured to trigger random access when a random access trigger condition is met.
  • BSR buffer status report
  • a communication device including: a processor; a memory for storing a computer program; wherein, when the computer program is executed by the processor, it implements any of the above-mentioned embodiments. random access method.
  • a computer-readable storage medium for storing a computer program, and when the computer program is executed by a processor, the random access method described in any of the above-mentioned embodiments is implemented. A step of.
  • the terminal when the terminal triggers the BSR, if the terminal meets the random access trigger condition, it can directly trigger the random access without triggering the scheduling request SR.
  • the process is conducive to reducing the delay of random access, so as to meet the needs of services requiring lower delay.
  • Fig. 1 is a schematic flowchart of a random access method according to an embodiment of the present disclosure.
  • Fig. 2 is a schematic flowchart of another random access method according to an embodiment of the present disclosure.
  • Fig. 3 is a schematic flow chart showing another random access method according to an embodiment of the present disclosure.
  • Fig. 4 is a schematic flow chart showing another random access method according to an embodiment of the present disclosure.
  • Fig. 5 is a schematic flowchart of another random access method according to an embodiment of the present disclosure.
  • Fig. 6 is a schematic flowchart of another random access method according to an embodiment of the present disclosure.
  • Fig. 7 is a schematic flowchart of another random access method according to an embodiment of the present disclosure.
  • Fig. 8 is a schematic flowchart of another random access method according to an embodiment of the present disclosure.
  • Fig. 9 is a schematic flowchart of another random access method according to an embodiment of the present disclosure.
  • Fig. 10 is a schematic flow chart showing another random access method according to an embodiment of the present disclosure.
  • Fig. 11 is a schematic block diagram of a random access device according to an embodiment of the present disclosure.
  • Fig. 12 is a schematic block diagram of a base station according to an embodiment of the present disclosure.
  • Fig. 13 is a schematic block diagram of an apparatus for random access according to an embodiment of the present disclosure.
  • first, second, third, etc. may use the terms first, second, third, etc. to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the embodiments of the present disclosure, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, the word “if” as used herein may be interpreted as “at” or "when” or "in response to a determination.”
  • the terms used herein are “greater than” or “less than”, “higher than” or “lower than” when representing a size relationship. But for those skilled in the art, it can be understood that the term “greater than” also covers the meaning of “greater than or equal to”, and “less than” also covers the meaning of “less than or equal to”; the term “higher than” covers the meaning of “higher than or equal to”. “The meaning of "below” also covers the meaning of "less than or equal to”.
  • Fig. 1 is a schematic flowchart of a random access method according to an embodiment of the present disclosure.
  • the random access method shown in this embodiment can be applied to terminals, and the terminals include but are not limited to communication devices such as mobile phones, tablet computers, wearable devices, sensors, and Internet of Things devices.
  • the terminal may serve as user equipment to communicate with a base station, and the base station includes but is not limited to a base station in a communication system such as a 4G base station, a 5G base station, and a 6G base station.
  • the terminal may be a terminal in a terrestrial network.
  • terminals can communicate directly with terrestrial base stations.
  • the terminal may be a terminal in a non-terrestrial network (Non-Terrestrial Networks, NTN).
  • NTN Non-Terrestrial Networks
  • the terminal can communicate with the ground base station through the aerial equipment, and the aerial equipment includes but not limited to satellites, aerial platforms, unmanned aerial vehicles and other equipment.
  • the satellite can send the signal from the terminal to the ground base station, and can also send the signal from the ground base station to the terminal.
  • the signal processing methods of the satellite include but are not limited to regeneration mode and transparent transmission mode.
  • the random access method may include the following steps:
  • step S101 in the case that the terminal triggers a buffer status report BSR, determine whether the terminal meets the trigger condition of random access;
  • step S102 when the terminal satisfies a trigger condition of random access, trigger random access.
  • the terminal when the terminal triggers the BSR, if the terminal meets the random access trigger condition, it can directly trigger the random access without triggering the scheduling request SR.
  • the process is conducive to reducing the delay of random access, so as to meet the needs of services requiring lower delay.
  • the random access triggered by the terminal may be a four-step random access 4-STEP RA, or a two-step random access 2-STEP RA.
  • the four-step random access may include four steps: first, the terminal sends the first random access message Msg1 to the base station, which mainly includes a preamble (Preamble); after receiving Msg1, the base station sends the message to the terminal Send the second message Msg2 of random access, Msg2 can also be called a random access response (RAR for short), which mainly includes the identification of the preamble and uplink resource allocation information; after receiving Msg2, the terminal sends a random access response to the base station
  • the third message, Msg3, mainly includes the identity of the terminal; after receiving Msg3, the base station can send the third message Msg4 of random access to the terminal, and Msg4 is mainly used for contention resolution.
  • the two-step random access may include two steps: first, the terminal sends a random access message MsgA to the base station, and MsgA includes a random access preamble and an identifier of the terminal, and may also include a physical uplink shared channel ( Physical Uplink Shared CHannel, PUSCH) load payload.
  • MsgA includes a random access preamble and an identifier of the terminal, and may also include a physical uplink shared channel ( Physical Uplink Shared CHannel, PUSCH) load payload.
  • MsgA includes terminal identification information and contention resolution information.
  • the BSR is a conventional BSR. It should be noted that, in all the embodiments of the present disclosure, the BSR triggered by the terminal may be a regular (regular) BSR or an unconventional BSR.
  • the trigger conditions of the conventional BSR include but are not limited to the following: when new data arrives on a logical channel with a higher priority than the existing logical channel containing transmittable data; when new data arrives, and the terminal does not have any logic Channels contain transferable data.
  • the BSR triggered by the terminal may be one BSR or multiple BSRs, for example, the BSRs are triggered by different logical channels (Logical Channel, LC).
  • logical channels Logical Channel, LC
  • Fig. 2 is a schematic flowchart of another random access method according to an embodiment of the present disclosure. As shown in Figure 2, the triggering random access includes:
  • step S201 determine whether there is an available uplink shared channel UL-SCH resource that can be used for new transmission;
  • step S202 if there is no available UL-SCH resource for new transmission, random access is triggered.
  • the reason for triggering the BSR is generally that new data needs to be transmitted, it may be determined whether to trigger random access based on whether the new data can be successfully transmitted. For example, it can be determined whether there are available UL-SCH resources that can be used for new transmission (transmission of new data). Access to establish a communication connection with the base station, and obtain available UL-SCH resources that can be used for new transmission to send BSR and/or new data.
  • Fig. 3 is a schematic flow chart showing another random access method according to an embodiment of the present disclosure. As shown in Figure 3, there are available UL-SCH resources that can be used for new transmission, and the triggering random access includes:
  • step S301 determine whether the UL-SCH resource satisfies the logical channel priority operation LCP mapping restriction condition of the logical channel LC triggering the BSR;
  • step S302 random access is triggered when the UL-SCH resource does not satisfy the LCP mapping restriction condition of the LC that triggers the BSR.
  • LCP Logical Channel Prioritization
  • Fig. 4 is a schematic flow chart showing another random access method according to an embodiment of the present disclosure.
  • the terminal is configured with an authorization-free uplink (configured uplink grant) resource, and the triggering of random access includes:
  • step S401 determine the state of the logical channel scheduling request mask of the LC that triggers the BSR
  • step S402 when the state of the logical channel scheduling request mask (logical Channel SR-Mask) of the LC triggering the BSR is false, random access is triggered.
  • logical Channel scheduling request mask logical Channel SR-Mask
  • the terminal when the terminal is configured with license-free uplink resources, if the state of the logical channel scheduling request mask of the LC that triggers the BSR is wrong, the terminal generally cannot transmit new data smoothly, so the random access can be triggered. enter.
  • Fig. 5 is a schematic flowchart of another random access method according to an embodiment of the present disclosure. As shown in Figure 5, the method also includes:
  • step S501 when the terminal does not meet the trigger condition, a scheduling request SR is triggered.
  • the terminal when the terminal does not meet the triggering condition of random access, the terminal may choose to trigger SR. Accordingly, if there are available uplink resources (such as physical uplink control channel resources) that can send SR, The BSR can be sent directly by requesting resources through the SR, which is beneficial to ensure the smooth sending of the BSR.
  • uplink resources such as physical uplink control channel resources
  • the terminal does not meet the trigger conditions of random access, which may mean that the terminal does not meet the trigger conditions of two-step random access.
  • the terminal can choose to trigger SR or four-step random access. enter. Taking the triggering of SR as an example, the four-step random access will not be triggered, so the random access channel resources will not be occupied, which is beneficial to avoid random access channel resource congestion.
  • Fig. 6 is a schematic flowchart of another random access method according to an embodiment of the present disclosure.
  • the triggering SR includes:
  • step S601 determine whether there is an available uplink shared channel UL-SCH resource that can be used for new transmission;
  • step S602 when there is no available UL-SCH resource for new transmission, SR is triggered.
  • the reason for triggering the BSR is generally the need to transmit new data
  • Fig. 7 is a schematic flowchart of another random access method according to an embodiment of the present disclosure. As shown in Figure 7, there are available UL-SCH resources that can be used for new transmission, and the triggering SR includes:
  • step S701 determine whether the UL-SCH resource satisfies the logical channel priority operation LCP mapping restriction condition of the logical channel LC triggering the BSR;
  • step S702 when the UL-SCH resource does not satisfy the LCP mapping restriction condition of the LC that triggers the BSR, an SR is triggered.
  • LCP mapping restriction conditions if the mapping restriction conditions are met, then new data can be transmitted smoothly, if the mapping restriction conditions are not met, new data cannot be smoothly transmitted, then SR can be used, so that the SR request can be used to meet the trigger described
  • the LCP of the logical channel LC of the BSR maps the restricted UL-SCH resources, so as to transmit the BSR and/or new data smoothly.
  • Fig. 8 is a schematic flowchart of another random access method according to an embodiment of the present disclosure.
  • the terminal is configured with license-free uplink resources, and the triggering SR includes:
  • step S801 determine the logical channel scheduling request mask state of the LC triggering the BSR
  • step S802 when the logical channel scheduling request mask state of the LC that triggers the BSR is wrong, an SR is triggered.
  • the terminal when the terminal is configured with license-free uplink resources, if the state of the logical channel scheduling request mask of the LC that triggers the BSR is wrong, the terminal generally cannot transmit new data smoothly, so the SR can be triggered.
  • the triggering condition of the random access includes at least one of the following: the LC that triggers the BSR is configured to allow triggering random access or two-step random access when triggering the BSR; triggering the BSR The LC is configured to prohibit the retransmission of the uplink hybrid automatic reswitch request HARQ; the quality of service (Quality of Service, QoS) of the LC that triggers the BSR does not meet the specified quality of service; the terminal is a terminal in a non-terrestrial network NTN The specific round-trip delay does not meet the delay condition; the distance from the terminal to at least one of the satellite, reference point, and base station in the NTN does not meet the distance condition; the time domain and/or frequency domain compensation performed by the terminal meets the compensation requirements .
  • QoS Quality of Service
  • the terminal when the terminal triggers the buffer status report BSR, it can be determined whether the LC that triggers the BSR is configured to allow direct triggering (that is, not triggering SR) random access when the BSR is triggered Or two-step random access, if the LC triggering the BSR is configured to allow direct triggering of random access or two-step random access when the BSR is triggered, random access may be triggered.
  • the LC that triggers the BSR is configured to allow triggering random access when the BSR is triggered, then you can choose to trigger two-step random access or select to trigger four-step random access; for example, the LC that triggers the BSR is configured to allow If the two-step random access is triggered when the BSR is triggered, then the two-step random access can be selected to be triggered.
  • the terminal in the case that the terminal triggers the buffer status report BSR, it may be determined whether the LC triggering the BSR is configured to prohibit retransmission of an uplink Hybrid Automatic Repeat reQuest (HARQ) ( Disable UL HARQ retransmission), if the LC triggering the BSR is configured to prohibit the retransmission of the uplink hybrid automatic reswitch request HARQ, then random access can be initiated.
  • HARQ Hybrid Automatic Repeat reQuest
  • the terminal communicates with the base station based on the HARQ mechanism, after the terminal performs uplink transmission, the base station receives and demodulates the uplink transmission, and then decides whether to schedule the terminal to retransmit according to the demodulation result, then at least one round trip time needs to be waited.
  • Delay in order to receive the retransmission from the terminal. For a terminal in the NTN, due to the large round-trip delay between the terminal and the base station, it will take a long time to retransmit each time, and it will take a long time to retransmit successfully.
  • some LCs can be configured to prohibit HARQ retransmission of uplink HARQ, then the terminal can not retransmit based on the scheduling of the demodulation results of the uplink transmission by the base station on this LC, but can perform uplink transmission.
  • the base station can schedule the terminal to perform uplink blind retransmission on the LC without waiting for the demodulation result of the uplink transmission, so as to reduce the time consumption of retransmission and complete the retransmission in a short time.
  • LC For an LC that is configured to prohibit uplink HARQ retransmission, since the LC is used for uplink blind retransmission, its corresponding uplink resources have generally been used for uplink blind retransmission and may not be available. Resources of can be used to transmit the triggered BSR, so random access can be triggered to request that available resources can be used to transmit the triggered BSR.
  • the terminal when the terminal triggers a buffer status report (BSR), it may be determined whether the quality of service of the LC triggering the BSR satisfies a specified quality of service. For example, it may be determined whether the specified parameter in the quality of service of the LC triggering the BSR meets the specified parameter in the specified quality of service. For example, if the specified parameter is time delay, it may be determined whether the time delay in the quality of service of the LC triggering the BSR is less than the time delay in the specified quality of service.
  • the quality of service of the LC triggering the BSR does not meet the specified quality of service, the uplink transmission may be difficult to meet the requirement, so random access may be triggered.
  • the terminal in the case that the terminal triggers the buffer status report BSR, it may be determined whether the terminal-specific round-trip delay (UE specific RTT) of the terminal in the non-terrestrial network NTN meets the delay condition. If the terminal-specific round-trip delay of the terminal in the non-terrestrial network NTN does not meet the delay condition, for example, the terminal-specific round-trip delay of the terminal in the non-terrestrial network NTN is greater than the preset delay, in this case the communication delay exceeds is large, random access can be triggered to re-establish a connection with the base station, and the re-established connection may reduce the communication delay.
  • the terminal-specific round-trip delay UE specific RTT
  • the terminal-specific round-trip delay may refer to the round-trip delay from the terminal to the ground reference point, or may refer to the round-trip delay from the terminal to the ground base station, which may be specifically set as required.
  • the terminal when the terminal triggers a buffer status report BSR, it may be determined whether the distance from the terminal to at least one of satellites, reference points, and base stations in the NTN satisfies a distance condition. If the distance from the terminal to at least one of the satellite, reference point, and base station in the NTN does not meet the distance condition, for example, the distance from the terminal to at least one of the satellite, reference point, and base station in the NTN is greater than the preset distance, in this case If the downtime communication delay is too large, random access can be triggered to re-establish a connection with the base station, and the re-established connection may reduce the communication delay.
  • the terminal when the terminal triggers a BSR, it may be determined whether the time domain and/or frequency domain compensation performed by the terminal meets the compensation requirement. Taking time domain compensation as an example, the terminal can pre-compensate (part or all) the round-trip delay between the terminal and the base station. If the compensation accuracy reaches the preset accuracy, it can be determined that the compensation meets the compensation requirements. In this case , based on the compensated time-domain resource communication, it is beneficial to ensure uplink and downlink synchronization, and random access can be smoothly performed, so random access can be triggered.
  • the random access trigger condition includes a two-step random access trigger condition.
  • Fig. 9 is a schematic flowchart of another random access method according to an embodiment of the present disclosure. As shown in FIG. 9, when the terminal meets the trigger condition of random access, triggering random access includes:
  • step S901 when the terminal satisfies the triggering condition of two-step random access, two-step random access is triggered.
  • the two-step random access when the trigger condition of random access is the trigger condition of two-step random access, the two-step random access may be triggered when the terminal satisfies the trigger condition of two-step random access. Since two-step random access has fewer steps than four-step random access, it takes less time and is beneficial to reduce time delay.
  • Fig. 10 is a schematic flow chart showing another random access method according to an embodiment of the present disclosure. As shown in Figure 10, the method also includes:
  • step S1001 when the terminal does not meet the triggering condition of the two-step random access, trigger the four-step random access or trigger the SR.
  • the trigger condition of random access is the trigger condition of two-step random access
  • the terminal does not meet the trigger condition of two-step random access
  • four-step random access may be triggered to ensure Random access went smoothly.
  • the trigger condition of random access is the trigger condition of two-step random access
  • the terminal when the terminal does not meet the trigger condition of two-step random access, a scheduling request may be triggered, and accordingly, the Sending the BSR through the SR request resource is beneficial to ensure the smooth transmission of the BSR, and will not trigger the four-step random access, so that the random access channel resources will not be occupied, and it is beneficial to avoid random access channel resource congestion.
  • the trigger condition of the two-step random access includes at least one of the following: the LC that triggers the BSR is configured to trigger two-step random access when the BSR is triggered; the LC that triggers the BSR It is configured to prohibit the retransmission of uplink hybrid automatic reswitch request HARQ; the service quality of the LC that triggers the BSR does not meet the specified service quality; the channel quality does not meet the quality condition; the terminal-specific round-trip of the terminal in the non-terrestrial network NTN The delay does not meet the delay condition; the distance from the terminal to at least one of the satellite, reference point, and base station in the NTN does not meet the distance condition; the time domain and/or frequency domain compensation performed by the terminal meets the compensation requirements; The terminal is configured with resources for two-step random access.
  • the terminal when the terminal triggers the buffer status report BSR, it can be determined whether the LC that triggers the BSR is configured to allow direct triggering (that is, not triggering the SR) two-step randomization when the BSR is triggered. Access, if the LC that triggers the BSR is configured to allow the two-step random access to be triggered directly when the BSR is triggered, then the two-step random access can be triggered.
  • the terminal when the terminal triggers the buffer status report BSR, it can be determined whether the LC that triggers the BSR is configured to prohibit the retransmission of the uplink hybrid automatic repeat request HARQ, if the triggering of the BSR If the LC is configured to prohibit the retransmission of the uplink HARQ, then the two-step random access can be triggered.
  • the terminal communicates with the base station based on the HARQ mechanism, after the terminal performs uplink transmission, the base station receives and demodulates the uplink transmission, and then decides whether to schedule the terminal to retransmit according to the demodulation result, then at least one round trip time needs to be waited.
  • Delay in order to receive the retransmission from the terminal. For a terminal in the NTN, due to the large round-trip delay between the terminal and the base station, it will take a long time to retransmit each time, and it will take a long time to retransmit successfully.
  • some LCs can be configured to prohibit HARQ retransmission of uplink HARQ, then the terminal can not retransmit based on the scheduling of the demodulation results of the uplink transmission by the base station on this LC, but can perform uplink transmission.
  • the base station can schedule the terminal to perform uplink blind retransmission on the LC without waiting for the demodulation result of the uplink transmission, so as to reduce the time consumption of retransmission and complete the retransmission in a short time.
  • the LC For an LC that is configured to prohibit uplink HARQ retransmission, since the LC is used for uplink blind retransmission, its corresponding uplink resources have generally been used for uplink blind retransmission and may not be available. resources can be used to transmit the triggered BSR, so two-step random access can be triggered to request that available resources can be used to transmit the triggered BSR.
  • the terminal when the terminal triggers a buffer status report (BSR), it may be determined whether the quality of service of the LC triggering the BSR satisfies a specified quality of service. For example, it may be determined whether the specified parameter in the quality of service of the LC triggering the BSR satisfies the specified parameter in the specified quality of service. For example, if the specified parameter is time delay, it may be determined whether the time delay in the quality of service of the LC triggering the BSR is less than the time delay in the specified quality of service.
  • the quality of service of the LC that triggers the BSR does not meet the specified quality of service, uplink transmission may be difficult to meet the requirements, so two-step random access may be triggered.
  • the terminal in the case that the terminal triggers a buffer status report (BSR), it may be judged whether the quality of the channel communicating with the base station satisfies the quality condition. For example, if the power of the signal received by the channel is less than the power threshold, it is determined that the channel quality does not meet the quality condition; for example, when the downlink pathloss reference is greater than the threshold value msgA-RSRP-Threshold, it can be determined that the channel quality does not meet the quality condition . When the channel quality does not meet the quality condition, it is difficult to guarantee the communication quality of the uplink transmission, so the two-step random access can be triggered.
  • BSR buffer status report
  • the power can be characterized by parameters such as Reference Signal Receiving Power (RSRP) and Reference Signal Receiving Quality (Reference Signal Receiving Quality, RSRQ).
  • RSRP Reference Signal Receiving Power
  • RSRQ Reference Signal Receiving Quality
  • the terminal in the case that the terminal triggers the buffer status report BSR, it may be determined whether the terminal-specific round-trip delay (UE specific RTT) of the terminal in the non-terrestrial network NTN meets the delay condition. If the terminal-specific round-trip delay of the terminal in the non-terrestrial network NTN does not meet the delay condition, for example, the terminal-specific round-trip delay of the terminal in the non-terrestrial network NTN is greater than the preset delay, in this case the communication delay exceeds is large, then two-step random access can be triggered to re-establish a connection with the base station, and the re-established connection may reduce the communication delay.
  • the terminal-specific round-trip delay UE specific RTT
  • the terminal-specific round-trip delay may refer to the round-trip delay from the terminal to the ground reference point, or may refer to the round-trip delay from the terminal to the ground base station, which may be specifically set as required.
  • the terminal when the terminal triggers a buffer status report BSR, it may be determined whether the distance from the terminal to at least one of satellites, reference points, and base stations in the NTN satisfies a distance condition. If the distance from the terminal to at least one of the satellite, reference point, and base station in the NTN does not meet the distance condition, for example, the distance from the terminal to at least one of the satellite, reference point, and base station in the NTN is greater than the preset distance, in this case If the downtime communication delay is too large, two-step random access can be triggered to re-establish a connection with the base station, and the re-established connection may reduce the communication delay.
  • the terminal when the terminal triggers a BSR, it may be determined whether the time domain and/or frequency domain compensation performed by the terminal meets the compensation requirement. Taking time domain compensation as an example, the terminal can pre-compensate the round-trip delay (part or all) between the terminal and the base station. If the compensation accuracy reaches the preset accuracy, it can be determined that the compensation meets the compensation requirements. In this case , based on the compensated time-domain resource communication, it is beneficial to ensure the uplink and downlink synchronization. For the two-step random access that requires high uplink and downlink synchronization, it can go smoothly, so the two-step random access can be triggered.
  • the terminal when the terminal triggers a buffer status report BSR, it may be determined whether the terminal is configured with resources for two-step random access, such as resources dedicated to two-step random access, If the terminal is configured with resources for two-step random access, two-step random access may be triggered.
  • resources for two-step random access such as resources dedicated to two-step random access
  • the terminal is in a non-connected state, such as idle (idle) state, inactive (inactive) state, and when the terminal satisfies the trigger condition of two-step random access, trigger two-step random access Random access includes:
  • the terminal For a UE in a non-connected state, if the terminal meets the trigger conditions for two-step random access, it can further determine whether the access category triggering random access (triggering BSR first, and then triggering random access by BSR) is satisfied.
  • Target condition when the access category meets the target condition, two-step random access can be triggered; otherwise, four-step random access can be triggered.
  • the target condition includes at least one of the following: according to the broadcast message of the base station, it is determined that the access category is configured to use two-step random access; the access stratum (Access Stratum, AS) of the terminal It is determined according to an indication of a Non-Access Stratum (Non-Access Stratum, NAS) that the access category is configured to use two-step random access.
  • the base station since the terminal is in a non-connected state, the base station generally cannot communicate with the terminal through unicast, so it can notify the terminal through a broadcast message that the access type is configured to use two-step random access, then the terminal If the access category triggers random access, two-step random access may be triggered.
  • the base station since the terminal is in a non-connected state, the base station generally cannot communicate with the terminal through the access layer, so the terminal can receive messages at the non-access layer, such as receiving messages from the core network, and then connect to the terminal through the non-access layer
  • the entry layer indicates to indicate that the access category is configured to use two-step random access, then the terminal can trigger two-step random access when the access category triggers random access.
  • the trigger condition of the two-step random access includes at least one of the following: the quality of service of the LC triggering the BSR does not meet the specified quality of service; the channel quality does not meet the quality condition ;
  • the terminal-specific round-trip delay of the terminal in the non-terrestrial network NTN does not meet the delay condition; the distance of the terminal to at least one of the satellite, reference point, and base station in the NTN does not meet the distance condition; the terminal performs The time-domain and/or frequency-domain compensation meets the compensation requirement; it is determined that there are available resources for two-step random access according to the broadcast message of the base station.
  • the terminal when the terminal triggers a buffer status report (BSR), it may be determined whether the quality of service of the LC triggering the BSR satisfies a specified quality of service. For example, it may be determined whether the specified parameter in the quality of service of the LC triggering the BSR meets the specified parameter in the specified quality of service. For example, if the specified parameter is time delay, it may be determined whether the time delay in the quality of service of the LC triggering the BSR is less than the time delay in the specified quality of service.
  • the quality of service of the LC triggering the BSR does not meet the specified quality of service, the uplink transmission may be difficult to meet the requirements, so random access may be triggered in two steps.
  • the terminal in the case that the terminal triggers a buffer status report (BSR), it may be judged whether the quality of the channel communicating with the base station satisfies the quality condition. For example, if the power of the signal received on the channel is less than the power threshold, it is determined that the channel quality does not meet the quality condition; for example, when the downlink path loss reference is greater than the threshold value msgA-RSRP-Threshold, it can be determined that the channel quality does not meet the quality condition. When the channel quality does not meet the quality condition, it is difficult to guarantee the communication quality of the uplink transmission, so the two-step random access can be triggered.
  • the power may be represented by parameters such as reference signal received power and reference signal received quality.
  • the terminal when the terminal triggers a buffer status report BSR, it may be determined whether the terminal-specific round-trip delay of the terminal in the non-terrestrial network NTN meets the delay condition. If the terminal-specific round-trip delay of the terminal in the non-terrestrial network NTN does not meet the delay condition, for example, the terminal-specific round-trip delay of the terminal in the non-terrestrial network NTN is greater than the preset delay, in this case the communication delay exceeds is large, then two-step random access can be triggered to re-establish a connection with the base station, and the re-established connection may reduce the communication delay.
  • the terminal-specific round-trip delay may refer to the round-trip delay from the terminal to the ground reference point, or may refer to the round-trip delay from the terminal to the ground base station, which may be specifically set as required.
  • the terminal when the terminal triggers a buffer status report BSR, it may be determined whether the distance from the terminal to at least one of satellites, reference points, and base stations in the NTN satisfies a distance condition. If the distance from the terminal to at least one of the satellite, reference point, and base station in the NTN does not meet the distance condition, for example, the distance from the terminal to at least one of the satellite, reference point, and base station in the NTN is greater than the preset distance, in this case If the downtime communication delay is too large, two-step random access can be triggered to re-establish a connection with the base station, and the re-established connection may reduce the communication delay.
  • the terminal when the terminal triggers a BSR, it may be determined whether the time domain and/or frequency domain compensation performed by the terminal meets the compensation requirement. Taking time domain compensation as an example, the terminal can pre-compensate (part or all) the round-trip delay between the terminal and the base station. If the compensation accuracy reaches the preset accuracy, it can be determined that the compensation meets the compensation requirements. In this case , based on the compensated time-domain resource communication, it is beneficial to ensure the uplink and downlink synchronization. For the two-step random access that requires high uplink and downlink synchronization, it can go smoothly, so the two-step random access can be triggered.
  • the terminal when the terminal triggers a buffer status report BSR, it may be determined whether the terminal is configured with resources for two-step random access, such as resources dedicated to two-step random access.
  • the base station Since the terminal is in the disconnected state, the base station generally cannot configure available resources for two-step random access for the terminal through unicast signaling, so it can inform the terminal whether there are available resources for two-step random access through a broadcast message .
  • the base station may determine whether there are available resources for two-step random access according to the broadcast message, and if it is determined according to the broadcast message that the terminal is configured with resources for two-step random access, the two-step random access may be triggered.
  • the present disclosure also provides embodiments of the random access device.
  • Fig. 11 is a schematic block diagram of a random access device according to an embodiment of the present disclosure.
  • the random access device shown in this embodiment can be applied to a terminal, and the terminal includes but is not limited to a communication device such as a mobile phone, a tablet computer, a wearable device, a sensor, and an Internet of Things device.
  • the terminal may serve as user equipment to communicate with a base station, and the base station includes but is not limited to a base station in a communication system such as a 4G base station, a 5G base station, and a 6G base station.
  • the random access device may include:
  • the processing module 1101 is configured to determine whether the trigger condition of random access is met when the buffer status report BSR is triggered; for example, the processing module may be a processor in the random access device or multiple cooperative processor;
  • the processing module 1101 is further configured to trigger random access when a random access trigger condition is satisfied.
  • the processing module is configured to determine whether there are available uplink shared channel UL-SCH resources that can be used for new transmission; if there is no available UL-SCH resource that can be used for new transmission, Trigger random access.
  • the processing module is configured to determine whether the UL-SCH resources meet the logical channel priority operation of the logical channel LC that triggers the BSR An LCP mapping restriction condition; when the UL-SCH resource does not meet the LCP mapping restriction condition of the LC triggering the BSR, random access is triggered.
  • the terminal is configured with unlicensed uplink resources
  • the processing module is configured to determine the state of the logical channel scheduling request mask of the LC that triggers the BSR; When the status of the logical channel scheduling request mask is wrong, random access is triggered.
  • the processing module is further configured to trigger a scheduling request SR when the trigger condition is not met.
  • the processing module is configured to determine whether there are available uplink shared channel UL-SCH resources that can be used for new transmission; if there is no available UL-SCH resource that can be used for new transmission, Trigger SRs.
  • the processing module is configured to determine whether the UL-SCH resources meet the logical channel priority operation of the logical channel LC that triggers the BSR An LCP mapping restriction condition; when the UL-SCH resource does not meet the LCP mapping restriction condition of the LC that triggers the BSR, an SR is triggered.
  • the terminal is configured with unlicensed uplink resources
  • the processing module is configured to determine the logical channel scheduling request mask state of the LC that triggers the BSR; when the logic of the LC that triggers the BSR When the state of the channel scheduling request mask is wrong, an SR is triggered.
  • the triggering condition of the random access includes at least one of the following: the LC that triggers the BSR is configured to allow random access or two-step random access when the BSR is triggered; triggering the BSR The LC is configured to prohibit the retransmission of HARQ; the quality of service of the LC that triggers the BSR does not meet the specified quality of service; the terminal-specific round-trip delay in the non-terrestrial network NTN does not meet The delay condition; the distance from the terminal to at least one of the satellite, the reference point, and the base station in the NTN does not meet the distance condition; the time domain and/or frequency domain compensation performed by the terminal meets the compensation requirement.
  • the random access trigger condition includes a two-step random access trigger condition.
  • the processing module is configured to trigger two-step random access when a trigger condition of two-step random access is satisfied.
  • the processing module is further configured to trigger four-step random access when the trigger condition of the two-step random access is not met; or the processing module is further configured to SR is triggered when the trigger condition of the two-step random access is satisfied.
  • the trigger condition of the two-step random access includes at least one of the following: the LC that triggers the BSR is configured to trigger two-step random access when the BSR is triggered; the LC that triggers the BSR It is configured to prohibit the retransmission of uplink hybrid automatic reswitch request HARQ; the service quality of the LC that triggers the BSR does not meet the specified service quality; the channel quality does not meet the quality condition; the terminal-specific round-trip of the terminal in the non-terrestrial network NTN The delay does not meet the delay condition; the distance from the terminal to at least one of the satellite, reference point, and base station in the NTN does not meet the distance condition; the time domain and/or frequency domain compensation performed by the terminal meets the compensation requirements; The terminal is configured with resources for two-step random access.
  • the terminal is in a non-connected state
  • the processing module is configured to satisfy the trigger condition of two-step random access, and the access category triggering the random access meets the target condition, Trigger two-step random access; otherwise, trigger four-step random access.
  • the target condition includes at least one of the following: according to the broadcast message of the base station, it is determined that the access category is configured to use two-step random access; Indicates that the access class is configured to use two-step random access.
  • the triggering condition of the two-step random access includes at least one of the following: the quality of service of the LC that triggers the BSR does not meet the specified quality of service; the channel quality does not meet the quality of service Condition; the terminal-specific round-trip delay of the terminal in the non-terrestrial network NTN does not meet the delay condition; the distance of the terminal to at least one of satellites, reference points, and base stations in the NTN does not meet the distance condition; the terminal The performed time domain and/or frequency domain compensation meets the compensation requirement; it is determined according to the broadcast message of the base station that there are available resources for two-step random access.
  • the BSR is a conventional BSR.
  • the device embodiment since it basically corresponds to the method embodiment, for related parts, please refer to the part description of the method embodiment.
  • the device embodiments described above are only illustrative, and the modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in One place, or it can be distributed to multiple network modules. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without creative effort.
  • An embodiment of the present disclosure also proposes a communication device, including: a processor; a memory for storing a computer program; wherein, when the computer program is executed by the processor, the random access described in any of the above embodiments is realized method.
  • Embodiments of the present disclosure also provide a computer-readable storage medium for storing a computer program, and when the computer program is executed by a processor, the steps in the random access method described in any of the foregoing embodiments are implemented.
  • FIG. 12 is a schematic block diagram of a base station 1200 according to an embodiment of the present disclosure.
  • the base station 1200 includes a processing component 1222, a wireless transmitting/receiving component 1224, an antenna component 1226, and a signal processing part specific to a wireless interface.
  • the processing component 1222 may further include one or more processors.
  • One of the processors in the processing component 1222 may be configured to interact with the terminal described in any of the foregoing embodiments, for example, to accept random access initiated by the terminal.
  • Fig. 13 is a schematic block diagram of an apparatus 1300 for random access according to an embodiment of the present disclosure.
  • the apparatus 1300 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.
  • device 1300 may include one or more of the following components: processing component 1302, memory 1304, power supply component 1306, multimedia component 1308, audio component 1310, input/output (I/O) interface 1312, sensor component 1314, and communication component 1316.
  • processing component 1302 memory 1304, power supply component 1306, multimedia component 1308, audio component 1310, input/output (I/O) interface 1312, sensor component 1314, and communication component 1316.
  • memory 1304 power supply component 1306, multimedia component 1308, audio component 1310, input/output (I/O) interface 1312, sensor component 1314, and communication component 1316.
  • I/O input/output
  • the processing component 1302 generally controls the overall operations of the device 1300, such as those associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing component 1302 may include one or more processors 1320 to execute instructions to complete all or part of the steps of the above method. Additionally, processing component 1302 may include one or more modules that facilitate interaction between processing component 1302 and other components. For example, processing component 1302 may include a multimedia module to facilitate interaction between multimedia component 1308 and processing component 1302 .
  • the memory 1304 is configured to store various types of data to support operations at the device 1300 . Examples of such data include instructions for any application or method operating on device 1300, contact data, phonebook data, messages, pictures, videos, and the like.
  • the memory 1304 can be implemented by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic or Optical Disk Magnetic Disk
  • the power supply component 1306 provides power to various components of the device 1300 .
  • Power components 1306 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for device 1300 .
  • the multimedia component 1308 includes a screen that provides an output interface between the device 1300 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user.
  • the touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may not only sense a boundary of a touch or swipe action, but also detect duration and pressure associated with the touch or swipe action.
  • the multimedia component 1308 includes a front camera and/or a rear camera. When the device 1300 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capability.
  • the audio component 1310 is configured to output and/or input audio signals.
  • the audio component 1310 includes a microphone (MIC), which is configured to receive external audio signals when the device 1300 is in operation modes, such as call mode, recording mode and voice recognition mode. Received audio signals may be further stored in memory 1304 or sent via communication component 1316 .
  • the audio component 1310 also includes a speaker for outputting audio signals.
  • the I/O interface 1312 provides an interface between the processing component 1302 and a peripheral interface module.
  • the peripheral interface module may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: a home button, volume buttons, start button, and lock button.
  • Sensor assembly 1314 includes one or more sensors for providing various aspects of status assessment for device 1300 .
  • the sensor component 1314 can detect the open/closed state of the device 1300, the relative positioning of components, such as the display and keypad of the device 1300, and the sensor component 1314 can also detect a change in the position of the device 1300 or a component of the device 1300 , the presence or absence of user contact with the device 1300 , the device 1300 orientation or acceleration/deceleration and the temperature change of the device 1300 .
  • Sensor assembly 1314 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact.
  • Sensor assembly 1314 may also include optical sensors, such as CMOS or CCD image sensors, for use in imaging applications.
  • the sensor component 1314 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
  • the communication component 1316 is configured to facilitate wired or wireless communication between the apparatus 1300 and other devices.
  • the device 1300 can access wireless networks based on communication standards, such as WiFi, 2G or 3G, 4G LTE, 5G NR or a combination thereof.
  • the communication component 1316 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 1316 also includes a near field communication (NFC) module to facilitate short-range communication.
  • the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wide Band (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID Radio Frequency Identification
  • IrDA Infrared Data Association
  • UWB Ultra Wide Band
  • Bluetooth Bluetooth
  • apparatus 1300 may be programmed by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation for performing the methods described above.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor or other electronic component implementation for performing the methods described above.
  • non-transitory computer-readable storage medium including instructions, such as the memory 1304 including instructions, which can be executed by the processor 1320 of the device 1300 to implement the above method.
  • the non-transitory computer readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

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Abstract

本公开涉及随机接入方法、装置、通信装置和计算机可读存储介质，所述方法包括：在所述终端触发了缓存状态报告BSR的情况下，确定所述终端是否满足随机接入的触发条件；在所述终端满足随机接入的触发条件的情况下，触发随机接入。根据本公开，终端在触发了BSR的情况下，若终端满足随机接入的触发条件，则可以直接触发随机接入，而无需触发调度请求SR，据此，简化了触发随机接入的流程，有利于降低随机接入的时延，以便满足要求时延较低业务的需要。

Description

随机接入方法和装置、通信装置和计算机可读存储介质 技术领域
本公开涉及通信技术领域，具体而言，涉及随机接入方法、随机接入装置、通信装置和计算机可读存储介质。
背景技术
终端在触发缓存状态报告(Buffer Status Report，BSR)时，若没有可用的上行共享信道(UpLink Shared CHannel，UL-SCH)资源能够用于发送BSR，可以触发调度请求(Scheduling Request，SR)来请求上行共享信道资源，若没有可用的上行控制信道资源能够用于发送SR，终端可以发起随机接入(Random Access，RA)。
目前发起随机接入的流程，再触发BSR后，还会进一步触发SR，进而才会触发随机接入，这个过程中步骤较多，而每个步骤都需要消耗一定时间，这可能导致难以满足允许时延较低业务的需要。
发明内容
有鉴于此，本公开的实施例提出了随机接入方法、随机接入装置、通信装置和计算机可读存储介质，以解决相关技术中的技术问题。
根据本公开实施例的第一方面，提出一种随机接入方法，由终端执行，所述方法包括：在所述终端触发了缓存状态报告BSR的情况下，确定所述终端是否满足随机接入的触发条件；在所述终端满足随机接入的触发条件的情况下，触发随机接入。
在一个实施例中，所述触发随机接入包括：确定是否存在可用的上行共享信道UL-SCH资源能够用于新传；在不存在可用的UL-SCH资源能够用于新传的情况下，触发随机接入。
在一个实施例中，存在可用的UL-SCH资源能够用于新传，所述触发随机接入包括：确定所述UL-SCH资源是否满足触发所述BSR的逻辑信道LC的逻辑信道优先级操作LCP映射限制条件；在所述UL-SCH资源不满足触发所述BSR的LC的LCP映射限制条件的情况下，触发随机接入。
在一个实施例中，所述终端被配置有免授权上行资源，所述触发随机接入包括：确定触发所述BSR的LC的逻辑信道调度请求掩码的状态；在触发所述BSR的LC的逻辑信道调度请求掩码的状态为错误的情况下，触发随机接入。
在一个实施例中，所述方法还包括：在所述终端不满足所述触发条件的情况下，触发调度请求SR。
在一个实施例中，所述触发SR包括：确定是否存在可用的上行共享信道UL-SCH资源能够用于新传；在不存在可用的UL-SCH资源能够用于新传的情况下，触发SR。
在一个实施例中，存在可用的UL-SCH资源能够用于新传，所述触发SR包括：确定所述UL-SCH资源是否满足触发所述BSR的逻辑信道LC的逻辑信道优先级操作LCP映射限制条件；在所述UL-SCH资源不满足触发所述BSR的LC的LCP映射限制条件的情况下，触发SR。
在一个实施例中，所述终端被配置有免授权上行资源，所述触发SR包括：确定触发所述BSR的LC的逻辑信道调度请求掩码状态；在触发所述BSR的LC的逻辑信道调度请求掩码状态为错误的情况下，触发SR。
在一个实施例中，所述随机接入的触发条件包括以下至少之一：触发所述BSR的LC被配置允许在触发BSR的情况下触发随机接入或两步随机接入；触发所述BSR的LC被配置了禁止上行混合自动重换请求HARQ的重传；触发所述BSR的LC的服务质量不满足指定服务质量；所述终端在非地面网络NTN中的终端特定往返时延不满足时延条件；所述终端在NTN中到卫星、参考点、基站中至少之一的距离不满足距离条件；所述终端进行的时域和/或频域补偿满足补偿需求。
在一个实施例中，所述随机接入的触发条件包括两步随机接入的触发条件。
在一个实施例中，所述在所述终端满足随机接入的触发条件的情况下，触发随机接入包括：在所述终端满足两步随机接入的触发条件的情况下，触发两步随机接入。
在一个实施例中，所述方法还包括：在所述终端不满足所述两步随机接入的触发条件的情况下，触发四步随机接入或触发SR。
在一个实施例中，所述两步随机接入的触发条件包括以下至少之一：触发所述BSR的LC被配置了在触发BSR的情况下触发两步随机接入；触发所述BSR的LC被配置了禁止上行混合自动重换请求HARQ的重传；触发所述BSR的LC的服务质量不 满足指定服务质量；信道质量不满足质量条件；所述终端在非地面网络NTN中的终端特定往返时延不满足时延条件；所述终端在NTN中到卫星、参考点、基站中至少之一的距离不满足距离条件；所述终端进行的时域和/或频域补偿满足补偿需求；所述终端被配置有用于两步随机接入的资源。
在一个实施例中，所述终端处于非连接态，所述在所述终端满足两步随机接入的触发条件的情况下，触发两步随机接入包括：在所述终端满足两步随机接入的触发条件，且触发所述随机接入的接入类别满足目标条件的情况，触发两步随机接入；否则，触发四步随及接入。
在一个实施例中，所述目标条件包括以下至少之一：根据基站的广播消息确定所述接入类别被配置了采用两步随机接入；所述终端的接入层根据非接入层的指示确定所述接入类别被配置了采用两步随机接入。
在一个实施例中，所述两步随机接入的触发条件包括以下至少之一：触发所述BSR的LC的服务质量不满足指定服务质量；信道质量不满足质量条件；所述终端在非地面网络NTN中的终端特定往返时延不满足时延条件；所述终端在NTN中到卫星、参考点、基站中至少之一的距离不满足距离条件；所述终端进行的时域和/或频域补偿满足补偿需求；根据基站的广播消息确定存在可用的用于两步随机接入的资源。
在一个实施例中，所述BSR为常规BSR。
根据本公开实施例的第二方面，提出一种随机接入装置，所述装置包括：处理模块，被配置为在触发了缓存状态报告BSR的情况下，确定是否满足随机接入的触发条件；所述处理模块，还被配置为在满足随机接入的触发条件的情况下，触发随机接入。
根据本公开实施例的第三方面，提出一种通信装置，包括：处理器；用于存储计算机程序的存储器；其中，当所述计算机程序被处理器执行时，实现上述任一实施例所述的随机接入方法。
根据本公开实施例的第四方面，提出一种计算机可读存储介质，用于存储计算机程序，当所述计算机程序被处理器执行时，实现上述任一实施例所述的随机接入方法中的步骤。
根据本公开的实施例，终端在触发了BSR的情况下，若终端满足随机接入的触发条件，则可以直接触发随机接入，而无需触发调度请求SR，据此，简化了触发随 机接入的流程，有利于降低随机接入的时延，以便满足要求时延较低业务的需要。
附图说明
为了更清楚地说明本公开实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是根据本公开的实施例示出的一种随机接入方法的示意流程图。
图2是根据本公开的实施例示出的另一种随机接入方法的示意流程图。
图3是根据本公开的实施例示出的又一种随机接入方法的示意流程图。
图4是根据本公开的实施例示出的又一种随机接入方法的示意流程图。
图5是根据本公开的实施例示出的又一种随机接入方法的示意流程图。
图6是根据本公开的实施例示出的又一种随机接入方法的示意流程图。
图7是根据本公开的实施例示出的又一种随机接入方法的示意流程图。
图8是根据本公开的实施例示出的又一种随机接入方法的示意流程图。
图9是根据本公开的实施例示出的又一种随机接入方法的示意流程图。
图10是根据本公开的实施例示出的又一种随机接入方法的示意流程图。
图11是根据本公开的实施例示出的一种随机接入装置的示意框图。
图12是根据本公开的实施例示出的一种基站的示意框图。
图13是根据本公开的实施例示出的一种用于随机接入的装置的示意框图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
在本公开实施例使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制 本公开实施例。在本公开实施例和所附权利要求书中所使用的单数形式的“一种”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本公开实施例可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本公开实施例范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
出于简洁和便于理解的目的，本文在表征大小关系时，所使用的术语为“大于”或“小于”、“高于”或“低于”。但对于本领域技术人员来说，可以理解：术语“大于”也涵盖了“大于等于”的含义，“小于”也涵盖了“小于等于”的含义；术语“高于”涵盖了“高于等于”的含义，“低于”也涵盖了“低于等于”的含义。
图1是根据本公开的实施例示出的一种随机接入方法的示意流程图。本实施例所示的随机接入方法可以适用于终端，所述终端包括但不限于手机、平板电脑、可穿戴设备、传感器、物联网设备等通信装置。所述终端可以作为用户设备与基站通信，所述基站包括但不限于4G基站、5G基站、6G基站等通信系统中的基站。
在一些实施例中，所述终端可以是地面网络中的终端。在地面网络中，终端可以直接与地面基站通信。
在一些实施例中，所述终端可以是非地面网络(Non-Terrestrial Networks，NTN)中的终端。在非地面网络中，终端可以通过空中设备与地面基站通信，所述空中设备包括但不限于卫星、空中平台、无人飞行器等设备。以卫星为例，卫星可以将来自终端的信号发送给地面基站，也可以将来自地面基站的信号发送给终端，卫星对信号的处理方式包括但不限于再生模式和透传模式。
如图1所示，所述随机接入方法可以包括以下步骤：
在步骤S101中，在所述终端触发了缓存状态报告BSR的情况下，确定所述终端是否满足随机接入的触发条件；
在步骤S102中，在所述终端满足随机接入的触发条件的情况下，触发随机接入。
根据本公开的实施例，终端在触发了BSR的情况下，若终端满足随机接入的 触发条件，则可以直接触发随机接入，而无需触发调度请求SR，据此，简化了触发随机接入的流程，有利于降低随机接入的时延，以便满足要求时延较低业务的需要。
在一个实施例中，终端触发的随机接入可以是四步随机接入4-STEP RA，也可以是两步随机接入2-STEP RA。
在一个实施例中，四步随机接入可以包括四个步骤：首先，终端向基站发送随机接入的第一条消息Msg1，其中主要包含前导码(Preamble)；基站接收到Msg1后，向终端发送随机接入的第二条消息Msg2，Msg2也可以称作随机接入响应(简称RAR)，其中主要包含前导码的标识，上行资源分配信息；终端接收到Msg2后，向基站发送随机接入的第三条消息Msg3，其中主要包含终端的身份标识；基站接收到Msg3后，可以向终端发送随机接入的第三条消息Msg4，Msg4主要用于竞争解决(Contention Resolution)。
在一个实施例中，两步随机接入可以包括两个步骤：首先，终端向基站发送随机接入消息MsgA，MsgA包含随机接入的前导码和终端的标识，还可以包含物理上行共享信道(Physical Uplink Shared CHannel，PUSCH)的负载payload，基站接收到MsgA后，可以向终端发送随机接入消息MsgB，MsgB包含终端的标识信息以及竞争解决信息。
在一个实施例中，所述BSR为常规BSR。需要说明的是，在本公开的所有实施例中，终端触发的所述BSR，可以是常规(regular)BSR，也可以是非常规BSR。
其中，常规BSR的触发条件包括但不限于以下几种：当比现有包含可传输数据的逻辑信道优先级更高的逻辑信道有新数据到达；当有新数据到达时，而终端没有任何逻辑信道包含可传输数据。
另外，终端触发的所述BSR，可以是一个BSR，也可以是多个BSR，例如由不同的逻辑信道(Logical Channel，LC)分别触发了BSR。
图2是根据本公开的实施例示出的另一种随机接入方法的示意流程图。如图2所示，所述触发随机接入包括：
在步骤S201中，确定是否存在可用的上行共享信道UL-SCH资源能够用于新传；
在步骤S202中，在不存在可用的UL-SCH资源能够用于新传的情况下，触发随机接入。
在一个实施例中，由于触发BSR的原因，一般是需要传输新数据，所以可以基于是否能够顺利传输新数据，来判断是否触发随机接入。例如可以确定是否存在可用的UL-SCH资源能够用于新传(传输新数据)，在不存在可用的UL-SCH资源能够用于新传的情况下，新数据不能顺利传输，从而可以触发随机接入，以便与基站建立通信连接，并获取能够用于新传的可用的UL-SCH资源来发送BSR和/或新数据。
图3是根据本公开的实施例示出的又一种随机接入方法的示意流程图。如图3所示，存在可用的UL-SCH资源能够用于新传，所述触发随机接入包括：
在步骤S301中，确定所述UL-SCH资源是否满足触发所述BSR的逻辑信道LC的逻辑信道优先级操作LCP映射限制条件；
在步骤S302中，在所述UL-SCH资源不满足触发所述BSR的LC的LCP映射限制条件的情况下，触发随机接入。
在一个实施例中，在存在可用的UL-SCH资源能够用于新传的情况下，为了确保新数据能够顺利传输，可以确定所述UL-SCH资源是否满足触发所述BSR的逻辑信道LC的逻辑信道优先级操作LCP(Logical Channel Prioritization)映射限制条件，若满足映射限制条件，那么可以顺利传输新数据，若不满足映射限制条件，就不能顺利传输BSR和/或新数据，则可以触发随接入。
图4是根据本公开的实施例示出的又一种随机接入方法的示意流程图。如图4所示，所述终端被配置有免授权上行(configured uplink grant)资源，所述触发随机接入包括：
在步骤S401中，确定触发所述BSR的LC的逻辑信道调度请求掩码的状态；
在步骤S402中，在触发所述BSR的LC的逻辑信道调度请求掩码(logical Channel SR-Mask)的状态为错误false的情况下，触发随机接入。
在一个实施例中，在终端被配置有免授权上行资源的情况下，若触发BSR的LC的逻辑信道调度请求掩码的状态为错误，终端一般也不能顺利传输新数据，因此可以触发随机接入。
图5是根据本公开的实施例示出的又一种随机接入方法的示意流程图。如图5所示，所述方法还包括：
在步骤S501中，在所述终端不满足所述触发条件的情况下，触发调度请求SR。
在一个实施例中，在终端不满足随机接入的触发条件的情况下，终端可以选择触发SR，据此，在存在可用的上行资源(例如物理上行控制信道资源)能够发送SR的情况下，可以直接通过SR请求资源来发送BSR，有利于保证BSR的顺利发送。
需要说明的是，终端不满足随机接入的触发条件，可以是指终端不满足两步随机接入的触发条件，在这种情况下，终端可以选择触发SR，也可以选择触发四步随机接入。以选择触发SR为例，那么就不会触发四步随机接入，从而不会占用随机接入信道资源，有利于避免随机接入信道资源拥塞。
图6是根据本公开的实施例示出的又一种随机接入方法的示意流程图。如图6所示，所述触发SR包括：
在步骤S601中，确定是否存在可用的上行共享信道UL-SCH资源能够用于新传；
在步骤S602中，在不存在可用的UL-SCH资源能够用于新传的情况下，触发SR。
在一个实施例中，由于触发BSR的原因，一般是需要传输新数据，所以可以基于是否能够顺利传输新数据，来判断是否触发SR。例如可以确定是否存在可用的UL-SCH资源能够用于新传(传输新数据)，在不存在可用的UL-SCH资源能够用于新传的情况下，新数据不能顺利传输，从而可以SR，以便通过SR请求到能够用于新传的可用的UL-SCH资源来发送BSR和/或新数据。
图7是根据本公开的实施例示出的又一种随机接入方法的示意流程图。如图7所示，存在可用的UL-SCH资源能够用于新传，所述触发SR包括：
在步骤S701中，确定所述UL-SCH资源是否满足触发所述BSR的逻辑信道LC的逻辑信道优先级操作LCP映射限制条件；
在步骤S702中，在所述UL-SCH资源不满足触发所述BSR的LC的LCP映射限制条件的情况下，触发SR。
在一个实施例中，在存在可用的UL-SCH资源能够用于新传的情况下，为了确保新数据能够顺利传输，可以确定所述UL-SCH资源是否满足触发所述BSR的逻辑信道LC的逻辑信道优先级操作LCP映射限制条件，若满足映射限制条件，那么可以顺利传输新数据，若不满足映射限制条件，就不能顺利传输新数据，则可以SR，以便通过SR请求到满足触发所述BSR的逻辑信道LC的LCP映射限制条件的UL-SCH资源， 从而顺利传输BSR和/或新数据。
图8是根据本公开的实施例示出的又一种随机接入方法的示意流程图。如图8所示，所述终端被配置有免授权上行资源，所述触发SR包括：
在步骤S801中，确定触发所述BSR的LC的逻辑信道调度请求掩码状态；
在步骤S802中，在触发所述BSR的LC的逻辑信道调度请求掩码状态为错误的情况下，触发SR。
在一个实施例中，在终端被配置有免授权上行资源的情况下，若触发BSR的LC的逻辑信道调度请求掩码的状态为错误，终端一般也不能顺利传输新数据，因此可以触发SR。
在一些实施例中，所述随机接入的触发条件包括以下至少之一：触发所述BSR的LC被配置允许在触发BSR的情况下触发随机接入或两步随机接入；触发所述BSR的LC被配置了禁止上行混合自动重换请求HARQ的重传；触发所述BSR的LC的服务质量(Quality of Service，QoS)不满足指定服务质量；所述终端在非地面网络NTN中的终端特定往返时延不满足时延条件；所述终端在NTN中到卫星、参考点、基站中至少之一的距离不满足距离条件；所述终端进行的时域和/或频域补偿满足补偿需求。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以判断触发所述BSR的LC是否被配置允许在触发BSR的情况下直接触发(也即不触发SR)随机接入或两步随机接入，若触发所述BSR的LC被配置允许在触发BSR的情况下直接触发随机接入或两步随机接入，那么可以触发随机接入。例如触发所述BSR的LC被配置允许在触发BSR的情况下触发随机接入，那么可以选择触发两步随机接入或选择触发四步随机接入；例如触发所述BSR的LC被配置允许在触发BSR的情况下触发两步随机接入，那么可以选择触发两步随机接入。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以判断触发所述BSR的LC是否被配置了禁止上行混合自动重换请求HARQ(Hybrid Automatic Repeat reQuest)的重传(Disable UL HARQ retransmission)，若触发所述BSR的LC被配置了禁止上行混合自动重换请求HARQ的重传，那么可以发起随机接入。
在这种情况下，若终端与基站基于HARQ机制通信，终端进行上行传输后，基站接收该上行传输并解调，然后根据解调结果来决定是否调度终端重传，那么至少 需要等待一次往返时延，才能接到终端的重传。对于NTN中的终端，由于终端与基站之间通信的往返时延较大，这会导致每次重传耗时较长，那么就需要很长时间才能重传成功。
针对这种情况，可以针对一些LC配置禁止上行混合自动重换请求HARQ的重传，那么终端在这个LC上可以不基于基站对上行传输的解调结果的调度进行重传，而是可以进行上行盲重传，基站则不必等待对上行传输的解调结果就能调度终端在该LC上进行上行盲重传，从而减少重传的耗时，以便在较短的时间内完成重传。
而对于被配置了禁止上行混合自动重换请求HARQ的重传的LC，由于该LC是用于上行盲重传的，其对应的上行资源一般已经用于上行盲重传了，可能并没有可用的资源能够用于传输触发的BSR，因此可以触发随机接入，以请求可用的资源能够用于传输所触发的BSR。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以判断触发所述BSR的LC的服务质量是否满足指定服务质量。例如可以确定触发所述BSR的LC的服务质量中的指定参数是否满足指定服务质量中的指定参数。例如指定参数为时延，可以确定触发所述BSR的LC的服务质量中的时延，是否小于指定服务质量中的时延，若小于，则确定满足，若不小于，则确定不满足。在触发所述BSR的LC的服务质量不满足指定服务质量时，上行传输可能难以满足要求，因此可以触发随机接入。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以判断所述终端在非地面网络NTN中的终端特定往返时延(UE specific RTT)是否满足时延条件。若终端在非地面网络NTN中的终端特定往返时延不满足时延条件，例如终端在非地面网络NTN中的终端特定往返时延大于预设时延，在这种情况下通信的时延过大，那么可以触发随机接入，以重新与基站建立连接，重新建立的连接则可能使得通信的时延降低。
其中，终端特定往返时延，可以是指终端到地面参考点的往返时延，也可以是指终端到地面基站的往返时延，具体可以根据需要设置。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以确定所述终端在NTN中到卫星、参考点、基站中至少之一的距离是否满足距离条件。若终端在NTN中到卫星、参考点、基站中至少之一的距离不满足距离条件，例如终端在 NTN中到卫星、参考点、基站中至少之一的距离大于预设距离，在这种情况下通信的时延过大，那么可以触发随机接入，以重新与基站建立连接，重新建立的连接则可能使得通信的时延降低。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以判断所述终端进行的时域和/或频域补偿是否满足补偿需求。以对时域补偿为例，终端可以对终端与基站之间的往返时延(部分或全部)进行预补偿，若补偿精度达到预设精度，则可以确定补偿满足补偿需求，在这种情况下，基于经过补偿的时域资源通信，有利于确保上下行同步，可以顺利地进行随机接入，因此可以触发随机接入。
在一个实施例中，所述随机接入的触发条件包括两步随机接入的触发条件。
图9是根据本公开的实施例示出的又一种随机接入方法的示意流程图。如图9所示，所述在所述终端满足随机接入的触发条件的情况下，触发随机接入包括：
在步骤S901中，在所述终端满足两步随机接入的触发条件的情况下，触发两步随机接入。
在一个实施例中，在随机接入的触发条件为两步随机接入的触发条件的情况下，在终端满足两步随机接入的触发条件时，可以触发两步随机接入。由于两步随机接入相对于四步随机接入的步骤较少，耗时也就较少，有利于降低时延。
图10是根据本公开的实施例示出的又一种随机接入方法的示意流程图。如图10所示，所述方法还包括：
在步骤S1001中，在所述终端不满足所述两步随机接入的触发条件的情况下，触发四步随机接入或触发SR。
在一个实施例中，在随机接入的触发条件为两步随机接入的触发条件的情况下，在终端不满足两步随机接入的触发条件时，可以触发四步随机接入，以确保随机接入顺利进行。
在一个实施例中，在随机接入的触发条件为两步随机接入的触发条件的情况下，在终端不满足两步随机接入的触发条件时，可以触发调度请求，据此，可以直接通过SR请求资源来发送BSR，有利于保证BSR的顺利发送，并且不会触发四步随机接入，从而不会占用随机接入信道资源，有利于避免随机接入信道资源拥塞。
在一个实施例中，所述两步随机接入的触发条件包括以下至少之一：触发所述 BSR的LC被配置了在触发BSR的情况下触发两步随机接入；触发所述BSR的LC被配置了禁止上行混合自动重换请求HARQ的重传；触发所述BSR的LC的服务质量不满足指定服务质量；信道质量不满足质量条件；所述终端在非地面网络NTN中的终端特定往返时延不满足时延条件；所述终端在NTN中到卫星、参考点、基站中至少之一的距离不满足距离条件；所述终端进行的时域和/或频域补偿满足补偿需求；所述终端被配置有用于两步随机接入的资源。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以判断触发所述BSR的LC是否被配置允许在触发BSR的情况下直接触发(也即不触发SR)两步随机接入，若触发所述BSR的LC被配置允许在触发BSR的情况下直接触发两步随机接入，那么可以触发两步随机接入。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以判断触发所述BSR的LC是否被配置了禁止上行混合自动重换请求HARQ的重传，若触发所述BSR的LC被配置了禁止上行混合自动重换请求HARQ的重传，那么可以触发两步随机接入。
在这种情况下，若终端与基站基于HARQ机制通信，终端进行上行传输后，基站接收该上行传输并解调，然后根据解调结果来决定是否调度终端重传，那么至少需要等待一次往返时延，才能接到终端的重传。对于NTN中的终端，由于终端与基站之间通信的往返时延较大，这会导致每次重传耗时较长，那么就需要很长时间才能重传成功。
针对这种情况，可以针对一些LC配置禁止上行混合自动重换请求HARQ的重传，那么终端在这个LC上可以不基于基站对上行传输的解调结果的调度进行重传，而是可以进行上行盲重传，基站则不必等待对上行传输的解调结果就能调度终端在该LC上进行上行盲重传，从而减少重传的耗时，以便在较短的时间内完成重传。
而对于被配置了禁止上行混合自动重换请求HARQ的重传的LC，由于该LC是用于上行盲重传的，其对应的上行资源一般已经用于上行盲重传了，可能并没有可用的资源能够用于传输触发的BSR，因此可以触发两步随机接入，以请求可用的资源能够用于传输所触发的BSR。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以判断触发所述BSR的LC的服务质量是否满足指定服务质量。例如可以确定触发所述BSR 的LC的服务质量中的指定参数是否满足指定服务质量中的指定参数。例如指定参数为时延，可以确定触发所述BSR的LC的服务质量中的时延，是否小于指定服务质量中的时延，若小于，则确定满足，若不小于，则确定不满足。在触发所述BSR的LC的服务质量不满足指定服务质量时，上行传输可能难以满足要求，因此可以触发两步随机接入。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以判断与基站通信的信道质量是否满足质量条件。例如在信道接收到信号的功率小于功率阈值，则确定信道质量不满足质量条件；例如在下行路损(pathloss)参考大于门限值msgA-RSRP-Threshold的情况下，可以确定信道质量不满足质量条件。在信道质量不满足质量条件时，难以保证上行传输的通信质量，因此可以触发两步随机接入。
其中，功率可以通过参考信号接收功率(Reference Signal Receiving Power，RSRP)、参考信号接收质量(Reference Signal Receiving Quality，RSRQ)等参数表征。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以判断所述终端在非地面网络NTN中的终端特定往返时延(UE specific RTT)是否满足时延条件。若终端在非地面网络NTN中的终端特定往返时延不满足时延条件，例如终端在非地面网络NTN中的终端特定往返时延大于预设时延，在这种情况下通信的时延过大，那么可以触发两步随机接入，以重新与基站建立连接，重新建立的连接则可能使得通信的时延降低。
其中，终端特定往返时延，可以是指终端到地面参考点的往返时延，也可以是指终端到地面基站的往返时延，具体可以根据需要设置。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以确定所述终端在NTN中到卫星、参考点、基站中至少之一的距离是否满足距离条件。若终端在NTN中到卫星、参考点、基站中至少之一的距离不满足距离条件，例如终端在NTN中到卫星、参考点、基站中至少之一的距离大于预设距离，在这种情况下通信的时延过大，那么可以触发两步随机接入，以重新与基站建立连接，重新建立的连接则可能使得通信的时延降低。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以判断所述终端进行的时域和/或频域补偿是否满足补偿需求。以对时域补偿为例，终端可以对终端与基站之间的往返时延(部分或全部)进行预补偿，若补偿精度达到预设精度， 则可以确定补偿满足补偿需求，在这种情况下，基于经过补偿的时域资源通信，有利于确保上下行同步，针对对上下行同步要求较高的两步随机接入而言，可以顺利进行，因此可以触发两步随机接入。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以判断所述终端是否被配置有用于两步随机接入的资源，例如专门用于两步随机接入的资源，若所述终端被配置有用于两步随机接入的资源，则可以触发两步随机接入。
在一个实施例中，所述终端处于非连接态，例如空闲(idle)态、非激活(inactive)态，所述在所述终端满足两步随机接入的触发条件的情况下，触发两步随机接入包括：
在所述终端满足两步随机接入的触发条件，且触发所述随机接入的接入类别(Access Category)满足目标条件的情况，触发两步随机接入；否则，触发四步随及接入。
针对处于非连接态的UE，在终端满足两步随机接入的触发条件的情况下，还可以进一步判断触发随机接入的接入类别(先触发BSR，进而由BSR触发随机接入)是否满足目标条件，在接入类别满足目标条件的情况下，可以触发两步随机接入；否则，触发四步随及接入。
在一个实施例中，所述目标条件包括以下至少之一：根据基站的广播消息确定所述接入类别被配置了采用两步随机接入；所述终端的接入层(Access Stratum，AS)根据非接入层(Non-Access Stratum，NAS)的指示确定所述接入类别被配置了采用两步随机接入。
在一个实施例中，由于终端处于非连接态，基站一般不能通过单播的方式与终端通信，因此可以通过广播消息告知终端所述接入类别被配置了采用两步随机接入，那么终端在所述接入类别触发了随机接入的情况下，就可以触发两步随机接入。
在一个实施例中，由于终端处于非连接态，基站一般不能通过接入层与终端通信，因此终端可以在非接入层接收消息，例如接收核心网的消息，进而通过非接入层对接入层进行指示，以指示所述接入类别被配置了采用两步随机接入，那么终端在所述接入类别触发了随机接入的情况下，就可以触发两步随机接入。
在一个实施例中，针对非连接态的终端，所述两步随机接入的触发条件包括以下至少之一：触发所述BSR的LC的服务质量不满足指定服务质量；信道质量不满足质量条件；所述终端在非地面网络NTN中的终端特定往返时延不满足时延条件；所述 终端在NTN中到卫星、参考点、基站中至少之一的距离不满足距离条件；所述终端进行的时域和/或频域补偿满足补偿需求；根据基站的广播消息确定存在可用的用于两步随机接入的资源。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以判断触发所述BSR的LC的服务质量是否满足指定服务质量。例如可以确定触发所述BSR的LC的服务质量中的指定参数是否满足指定服务质量中的指定参数。例如指定参数为时延，可以确定触发所述BSR的LC的服务质量中的时延，是否小于指定服务质量中的时延，若小于，则确定满足，若不小于，则确定不满足。在触发所述BSR的LC的服务质量不满足指定服务质量时，上行传输可能难以满足要求，因此可以两步触发随机接入。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以判断与基站通信的信道质量是否满足质量条件。例如在信道接收到信号的功率小于功率阈值，则确定信道质量不满足质量条件；例如在下行路损参考大于门限值msgA-RSRP-Threshold的情况下，可以确定信道质量不满足质量条件。在信道质量不满足质量条件时，难以保证上行传输的通信质量，因此可以触发两步随机接入。其中，功率可以通过参考信号接收功率、参考信号接收质量等参数表征。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以判断所述终端在非地面网络NTN中的终端特定往返时延是否满足时延条件。若终端在非地面网络NTN中的终端特定往返时延不满足时延条件，例如终端在非地面网络NTN中的终端特定往返时延大于预设时延，在这种情况下通信的时延过大，那么可以触发两步随机接入，以重新与基站建立连接，重新建立的连接则可能使得通信的时延降低。
其中，终端特定往返时延，可以是指终端到地面参考点的往返时延，也可以是指终端到地面基站的往返时延，具体可以根据需要设置。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以确定所述终端在NTN中到卫星、参考点、基站中至少之一的距离是否满足距离条件。若终端在NTN中到卫星、参考点、基站中至少之一的距离不满足距离条件，例如终端在NTN中到卫星、参考点、基站中至少之一的距离大于预设距离，在这种情况下通信的时延过大，那么可以触发两步随机接入，以重新与基站建立连接，重新建立的连接则可能使得通信的时延降低。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以判断所述终端进行的时域和/或频域补偿是否满足补偿需求。以对时域补偿为例，终端可以对终端与基站之间的往返时延(部分或全部)进行预补偿，若补偿精度达到预设精度，则可以确定补偿满足补偿需求，在这种情况下，基于经过补偿的时域资源通信，有利于确保上下行同步，针对对上下行同步要求较高的两步随机接入而言，可以顺利进行，因此可以触发两步随机接入。
在一个实施例中，在所述终端触发了缓存状态报告BSR的情况下，可以判断所述终端是否被配置有用于两步随机接入的资源，例如专门用于两步随机接入的资源。
由于终端处于非连接态，基站一般不能通过单播信令为终端配置可用的用于两步随机接入的资源，因此可以通过广播消息告知终端是否存在可用的用于两步随机接入的资源。基站可以根据广播消息确定是否存在可用的用于两步随机接入的资源，若根据广播消息确定所述终端被配置有用于两步随机接入的资源，则可以触发两步随机接入。
与前述的随机接入方法的实施例相对应地，本公开还提供了随机接入装置的实施例。
图11是根据本公开的实施例示出的一种随机接入装置的示意框图。本实施例所示的随机接入装置可以适用于终端，所述终端包括但不限于手机、平板电脑、可穿戴设备、传感器、物联网设备等通信装置。所述终端可以作为用户设备与基站通信，所述基站包括但不限于4G基站、5G基站、6G基站等通信系统中的基站。
如图11所示，所述随机接入装置可以包括：
处理模块1101，被配置为在触发了缓存状态报告BSR的情况下，确定是否满足随机接入的触发条件；例如所述处理模块可以是随机接入装置中的一个处理器或多个协同工作的处理器；
所述处理模块1101，还被配置为在满足随机接入的触发条件的情况下，触发随机接入。
在一个实施例中，所述处理模块，被配置为确定是否存在可用的上行共享信道UL-SCH资源能够用于新传；在不存在可用的UL-SCH资源能够用于新传的情况下，触发随机接入。
在一个实施例中，存在可用的UL-SCH资源能够用于新传，所述处理模块，被 配置为确定所述UL-SCH资源是否满足触发所述BSR的逻辑信道LC的逻辑信道优先级操作LCP映射限制条件；在所述UL-SCH资源不满足触发所述BSR的LC的LCP映射限制条件的情况下，触发随机接入。
在一个实施例中，所述终端被配置有免授权上行资源，所述处理模块，被配置为确定触发所述BSR的LC的逻辑信道调度请求掩码的状态；在触发所述BSR的LC的逻辑信道调度请求掩码的状态为错误的情况下，触发随机接入。
在一个实施例中，所述处理模块，还被配置为在不满足所述触发条件的情况下，触发调度请求SR。
在一个实施例中，所述处理模块，被配置为确定是否存在可用的上行共享信道UL-SCH资源能够用于新传；在不存在可用的UL-SCH资源能够用于新传的情况下，触发SR。
在一个实施例中，存在可用的UL-SCH资源能够用于新传，所述处理模块，被配置为确定所述UL-SCH资源是否满足触发所述BSR的逻辑信道LC的逻辑信道优先级操作LCP映射限制条件；在所述UL-SCH资源不满足触发所述BSR的LC的LCP映射限制条件的情况下，触发SR。
在一个实施例中，所述终端被配置有免授权上行资源，所述处理模块，被配置为确定触发所述BSR的LC的逻辑信道调度请求掩码状态；在触发所述BSR的LC的逻辑信道调度请求掩码状态为错误的情况下，触发SR。
在一个实施例中，所述随机接入的触发条件包括以下至少之一：触发所述BSR的LC被配置允许在触发BSR的情况下触发随机接入或两步随机接入；触发所述BSR的LC被配置了禁止上行混合自动重换请求HARQ的重传；触发所述BSR的LC的服务质量不满足指定服务质量；所述终端在非地面网络NTN中的终端特定往返时延不满足时延条件；所述终端在NTN中到卫星、参考点、基站中至少之一的距离不满足距离条件；所述终端进行的时域和/或频域补偿满足补偿需求。
在一个实施例中，所述随机接入的触发条件包括两步随机接入的触发条件。
在一个实施例中，所述处理模块，被配置为在满足两步随机接入的触发条件的情况下，触发两步随机接入。
在一个实施例中，所述处理模块，还被配置为在不满足所述两步随机接入的触发条件的情况下触发四步随机接入；或者所述处理模块，还被配置为在不满足所述两 步随机接入的触发条件的情况下触发SR。
在一个实施例中，所述两步随机接入的触发条件包括以下至少之一：触发所述BSR的LC被配置了在触发BSR的情况下触发两步随机接入；触发所述BSR的LC被配置了禁止上行混合自动重换请求HARQ的重传；触发所述BSR的LC的服务质量不满足指定服务质量；信道质量不满足质量条件；所述终端在非地面网络NTN中的终端特定往返时延不满足时延条件；所述终端在NTN中到卫星、参考点、基站中至少之一的距离不满足距离条件；所述终端进行的时域和/或频域补偿满足补偿需求；所述终端被配置有用于两步随机接入的资源。
在一个实施例中，所述终端处于非连接态，所述处理模块，被配置为在满足两步随机接入的触发条件，且触发所述随机接入的接入类别满足目标条件的情况，触发两步随机接入；否则，触发四步随及接入。
在一个实施例中，所述目标条件包括以下至少之一：根据基站的广播消息确定所述接入类别被配置了采用两步随机接入；所述终端的接入层根据非接入层的指示确定所述接入类别被配置了采用两步随机接入。
在一个实施例中，对于处于非连接态的终端，所述两步随机接入的触发条件包括以下至少之一：触发所述BSR的LC的服务质量不满足指定服务质量；信道质量不满足质量条件；所述终端在非地面网络NTN中的终端特定往返时延不满足时延条件；所述终端在NTN中到卫星、参考点、基站中至少之一的距离不满足距离条件；所述终端进行的时域和/或频域补偿满足补偿需求；根据基站的广播消息确定存在可用的用于两步随机接入的资源。
在一个实施例中，所述BSR为常规BSR。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在相关方法的实施例中进行了详细描述，此处将不做详细阐述说明。
对于装置实施例而言，由于其基本对应于方法实施例，所以相关之处参见方法实施例的部分说明即可。以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的模块可以是或者也可以不是物理上分开的，作为模块显示的部件可以是或者也可以不是物理模块，即可以位于一个地方，或者也可以分布到多个网络模块上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性劳动的情况下，即可以理解并实施。
本公开的实施例还提出一种通信装置，包括：处理器；用于存储计算机程序的存储器；其中，当所述计算机程序被处理器执行时，实现上述任一实施例所述的随机接入方法。
本公开的实施例还提出一种计算机可读存储介质，用于存储计算机程序，当所述计算机程序被处理器执行时，实现上述任一实施例所述的随机接入方法中的步骤。
如图12所示，图12是根据本公开的实施例示出的一种基站1200的示意框图。参照图12，基站1200包括处理组件1222、无线发射/接收组件1224、天线组件1226、以及无线接口特有的信号处理部分，处理组件1222可进一步包括一个或多个处理器。处理组件1222中的其中一个处理器可以被配置为实现与上述任一实施例所述的终端进行交互，例如接受终端发起的随机接入。
图13是根据本公开的实施例示出的一种用于随接入的装置1300的示意框图。例如，装置1300可以是移动电话，计算机，数字广播终端，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等。
参照图13，装置1300可以包括以下一个或多个组件：处理组件1302，存储器1304，电源组件1306，多媒体组件1308，音频组件1310，输入/输出(I/O)的接口1312，传感器组件1314，以及通信组件1316。
处理组件1302通常控制装置1300的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理组件1302可以包括一个或多个处理器1320来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件1302可以包括一个或多个模块，便于处理组件1302和其他组件之间的交互。例如，处理组件1302可以包括多媒体模块，以方便多媒体组件1308和处理组件1302之间的交互。
存储器1304被配置为存储各种类型的数据以支持在装置1300的操作。这些数据的示例包括用于在装置1300上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器1304可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电源组件1306为装置1300的各种组件提供电力。电源组件1306可以包括电源管理系统，一个或多个电源，及其他与为装置1300生成、管理和分配电力相关联的 组件。
多媒体组件1308包括在所述装置1300和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。所述触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与所述触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件1308包括一个前置摄像头和/或后置摄像头。当装置1300处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件1310被配置为输出和/或输入音频信号。例如，音频组件1310包括一个麦克风(MIC)，当装置1300处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器1304或经由通信组件1316发送。在一些实施例中，音频组件1310还包括一个扬声器，用于输出音频信号。
I/O接口1312为处理组件1302和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件1314包括一个或多个传感器，用于为装置1300提供各个方面的状态评估。例如，传感器组件1314可以检测到装置1300的打开/关闭状态，组件的相对定位，例如所述组件为装置1300的显示器和小键盘，传感器组件1314还可以检测装置1300或装置1300一个组件的位置改变，用户与装置1300接触的存在或不存在，装置1300方位或加速/减速和装置1300的温度变化。传感器组件1314可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件1314还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件1314还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件1316被配置为便于装置1300和其他设备之间有线或无线方式的通信。装置1300可以接入基于通信标准的无线网络，如WiFi，2G或3G，4G LTE、5G NR或它们的组合。在一个示例性实施例中，通信组件1316经由广播信道接收来自外 部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，所述通信组件1316还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，装置1300可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述方法。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器1304，上述指令可由装置1300的处理器1320执行以完成上述方法。例如，所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
本领域技术人员在考虑说明书及实践这里公开的公开后，将容易想到本公开的其它实施方案。本公开旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上对本公开实施例所提供的方法和装置进行了详细介绍，本文中应用了具体 个例对本公开的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本公开的方法及其核心思想；同时，对于本领域的一般技术人员，依据本公开的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本公开的限制。

Claims (20)

  1. 一种随机接入方法，其特征在于，由终端执行，所述方法包括：
    在所述终端触发了缓存状态报告BSR的情况下，确定所述终端是否满足随机接入的触发条件；
    在所述终端满足随机接入的触发条件的情况下，触发随机接入。
  2. 根据权利要求1所述的方法，其特征在于，所述触发随机接入包括：
    确定是否存在可用的上行共享信道UL-SCH资源能够用于新传；
    在不存在可用的UL-SCH资源能够用于新传的情况下，触发随机接入。
  3. 根据权利要求1所述的方法，其特征在于，存在可用的UL-SCH资源能够用于新传，所述触发随机接入包括：
    确定所述UL-SCH资源是否满足触发所述BSR的逻辑信道LC的逻辑信道优先级操作LCP映射限制条件；
    在所述UL-SCH资源不满足触发所述BSR的LC的LCP映射限制条件的情况下，触发随机接入。
  4. 根据权利要求1所述的方法，其特征在于，所述终端被配置有免授权上行资源，所述触发随机接入包括：
    确定触发所述BSR的LC的逻辑信道调度请求掩码的状态；
    在触发所述BSR的LC的逻辑信道调度请求掩码的状态为错误的情况下，触发随机接入。
  5. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    在所述终端不满足所述触发条件的情况下，触发调度请求SR。
  6. 根据权利要求5所述的方法，其特征在于，所述触发SR包括：
    确定是否存在可用的上行共享信道UL-SCH资源能够用于新传；
    在不存在可用的UL-SCH资源能够用于新传的情况下，触发SR。
  7. 根据权利要求5所述的方法，其特征在于，存在可用的UL-SCH资源能够用于新传，所述触发SR包括：
    确定所述UL-SCH资源是否满足触发所述BSR的逻辑信道LC的逻辑信道优先级操作LCP映射限制条件；
    在所述UL-SCH资源不满足触发所述BSR的LC的LCP映射限制条件的情况下，触发SR。
  8. 根据权利要求5所述的方法，其特征在于，所述终端被配置有免授权上行资源， 所述触发SR包括：
    确定触发所述BSR的LC的逻辑信道调度请求掩码状态；
    在触发所述BSR的LC的逻辑信道调度请求掩码状态为错误的情况下，触发SR。
  9. 根据权利要求1所述的方法，其特征在于，所述随机接入的触发条件包括以下至少之一：
    触发所述BSR的LC被配置允许在触发BSR的情况下触发随机接入或两步随机接入；
    触发所述BSR的LC被配置了禁止上行混合自动重换请求HARQ的重传；
    触发所述BSR的LC的服务质量不满足指定服务质量；
    所述终端在非地面网络NTN中的终端特定往返时延不满足时延条件；
    所述终端在NTN中到卫星、参考点、基站中至少之一的距离不满足距离条件；
    所述终端进行的时域和/或频域补偿满足补偿需求。
  10. 根据权利要求1至8中任一项所述的方法，其特征在于，所述随机接入的触发条件包括两步随机接入的触发条件。
  11. 根据权利要求10所述的方法，其特征在于，所述在所述终端满足随机接入的触发条件的情况下，触发随机接入包括：
    在所述终端满足两步随机接入的触发条件的情况下，触发两步随机接入。
  12. 根据权利要求10所述的方法，其特征在于，所述方法还包括：
    在所述终端不满足所述两步随机接入的触发条件的情况下，触发四步随机接入或触发SR。
  13. 根据权利要求10所述的方法，其特征在于，所述两步随机接入的触发条件包括以下至少之一：
    触发所述BSR的LC被配置了在触发BSR的情况下触发两步随机接入；
    触发所述BSR的LC被配置了禁止上行混合自动重换请求HARQ的重传；
    触发所述BSR的LC的服务质量不满足指定服务质量；
    信道质量不满足质量条件；
    所述终端在非地面网络NTN中的终端特定往返时延不满足时延条件；
    所述终端在NTN中到卫星、参考点、基站中至少之一的距离不满足距离条件；
    所述终端进行的时域和/或频域补偿满足补偿需求；
    所述终端被配置有用于两步随机接入的资源。
  14. 根据权利要求10的方法，其特征在于，所述终端处于非连接态，所述在所述 终端满足两步随机接入的触发条件的情况下，触发两步随机接入包括：
    在所述终端满足两步随机接入的触发条件，且触发所述随机接入的接入类别满足目标条件的情况，触发两步随机接入；否则，触发四步随及接入。
  15. 根据权利要求14的方法，其特征在于，所述目标条件包括以下至少之一：
    根据基站的广播消息确定所述接入类别被配置了采用两步随机接入；
    所述终端的接入层根据非接入层的指示确定所述接入类别被配置了采用两步随机接入。
  16. 根据权利要求14所述的方法，其特征在于，所述两步随机接入的触发条件包括以下至少之一：
    触发所述BSR的LC的服务质量不满足指定服务质量；
    信道质量不满足质量条件；
    所述终端在非地面网络NTN中的终端特定往返时延不满足时延条件；
    所述终端在NTN中到卫星、参考点、基站中至少之一的距离不满足距离条件；
    所述终端进行的时域和/或频域补偿满足补偿需求；
    根据基站的广播消息确定存在可用的用于两步随机接入的资源。
  17. 根据权利要求1至9中任一项所述的方法，其特征在于，所述BSR为常规BSR。
  18. 一种随机接入装置，其特征在于，所述装置包括：
    处理模块，被配置为在触发了缓存状态报告BSR的情况下，确定是否满足随机接入的触发条件；
    所述处理模块，还被配置为在满足随机接入的触发条件的情况下，触发随机接入。
  19. 一种通信装置，其特征在于，包括：
    处理器；
    用于存储计算机程序的存储器；
    其中，当所述计算机程序被处理器执行时，实现权利要求1至17中任一项所述的随机接入方法。
  20. 一种计算机可读存储介质，用于存储计算机程序，其特征在于，当所述计算机程序被处理器执行时，实现权利要求1至17中任一项所述的随机接入方法中的步骤。
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