WO2021016773A1 - Procédé de détection de réponse d'accès aléatoire, dispositif terminal, dispositif de réseau et support d'informations - Google Patents

Procédé de détection de réponse d'accès aléatoire, dispositif terminal, dispositif de réseau et support d'informations Download PDF

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Publication number
WO2021016773A1
WO2021016773A1 PCT/CN2019/098038 CN2019098038W WO2021016773A1 WO 2021016773 A1 WO2021016773 A1 WO 2021016773A1 CN 2019098038 W CN2019098038 W CN 2019098038W WO 2021016773 A1 WO2021016773 A1 WO 2021016773A1
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Prior art keywords
time
offset
terminal device
network device
window
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PCT/CN2019/098038
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English (en)
Chinese (zh)
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卢前溪
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Oppo广东移动通信有限公司
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Priority to PCT/CN2019/098038 priority Critical patent/WO2021016773A1/fr
Priority to CN201980092825.1A priority patent/CN113498628B/zh
Publication of WO2021016773A1 publication Critical patent/WO2021016773A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present invention relates to mobile communication technology, in particular to a method, terminal equipment, network equipment and storage medium for monitoring random access responses.
  • Non-terrestrial communication network provides communication services to ground users by means of communication satellite communication.
  • communication satellite communication has many unique advantages, such as: not restricted by user area, long communication distance, and high stability.
  • the signal transmission time between the terminal and the base station is short, and the signal transmission time with the communication satellite is longer.
  • RAR Random Access Response
  • the same monitoring base station is used In the random access response monitoring mechanism, invalid monitoring will occur due to the premature start of the RAR time window, which will undoubtedly increase the power consumption of the terminal. How to ensure that the terminal device uses the lowest power consumption during the random access process Effective monitoring of the RAR returned by the communication satellite is a problem to be solved.
  • the embodiment of the present invention provides a method, terminal equipment, network equipment and storage medium for monitoring random access responses, which can ensure that the terminal equipment effectively monitors the RAR returned by the communication satellite with the minimum power consumption during the random access process.
  • an embodiment of the present invention provides a method for monitoring random access responses, including:
  • the terminal device determines the window parameter of the RAR time window, and the window parameter includes: an offset;
  • the terminal device determines the start time of the RAR time window based on the offset; the RAR time window is used to monitor the RAR sent by the network device; the start time is the first physical downlink control channel PDCCH timing after the reference time ; The reference time is the time delay for the terminal device to send a random access request by one offset.
  • an embodiment of the present invention provides a method for monitoring random access responses, including:
  • the network device sends the window parameter of the RAR time window to the terminal device, where the window parameter includes: an offset;
  • the offset is used for the terminal device to determine the start time of the RAR time window; the RAR time window is used to monitor the RAR sent by the network device; the start time is the first physical downlink control channel PDCCH after the reference time Timing; the reference time is to delay the time when the terminal device sends a random access request by an offset.
  • an embodiment of the present invention provides a terminal device, including:
  • the first determining unit is configured to determine window parameters of the RAR time window, where the window parameters include: an offset;
  • the second determining unit is configured to determine the start time of the RAR time window based on the offset; the RAR time window is used to monitor the RAR sent by the network device; the start time is the first physical downlink control after the reference time Channel PDCCH timing; the reference time is the time delay for the terminal device to send the random access request by the offset.
  • an embodiment of the present invention provides a network device, including:
  • the sending unit is used for the network device to send the window parameter of the RAR time window to the terminal device, and the window parameter includes: an offset;
  • the offset is used for the terminal device to determine the start time of the RAR time window; the RAR time window is used to monitor the RAR sent by the network device; the start time is the first physical downlink control channel PDCCH after the reference time Timing; the reference time is to delay the time when the terminal device sends a random access request by an offset.
  • an embodiment of the present invention provides a terminal device, including a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used to execute the above-mentioned terminal when the computer program is running. Steps of the method for monitoring random access responses executed by the device.
  • an embodiment of the present invention provides a source base station, including a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used to execute the above-mentioned network when the computer program is running. Steps of the method for monitoring random access responses executed by the device.
  • an embodiment of the present invention provides a storage medium storing an executable program, and when the executable program is executed by a processor, the method for monitoring random access responses executed by the terminal device described above is implemented.
  • an embodiment of the present invention provides a storage medium storing an executable program, and when the executable program is executed by a processor, the method for monitoring random access responses executed by the network device described above is implemented.
  • the method for monitoring random access response includes: a terminal device determines a window parameter of a RAR time window, and the window parameter includes: an offset;
  • the terminal device determines the start time of the RAR time window for monitoring the RAR sent by the network device based on the offset; the start time is the first physical downlink control channel PDCCH timing after the reference time; the reference time To delay the time for the terminal device to send the random access request by an offset.
  • the start time of the RAR time window is delayed by the offset, so that the terminal device can effectively monitor the RAR returned by the communication satellite with the smallest power consumption during the random access process.
  • Fig. 1 is a schematic diagram of an optional processing flow of random access according to the present invention
  • FIG. 2 is a schematic diagram of an optional processing flow of random access according to the present invention.
  • FIG. 3 is a schematic diagram of an optional processing flow of random access according to the present invention.
  • FIG. 4 is a schematic diagram of an optional composition structure of a communication system according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of an optional composition structure of a communication system according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of an optional processing flow of a method for monitoring random access responses according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of an optional processing flow of a method for monitoring random access responses according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of an optional timing relationship provided by an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of an optional processing flow of a method for monitoring random access responses according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of an optional processing flow of a method for monitoring random access responses provided by an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of an optional timing relationship provided by an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of an optional processing flow of a method for monitoring random access responses provided by an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of an optional timing relationship provided by an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of an optional processing flow of a method for monitoring random access responses provided by an embodiment of the present invention.
  • 15 is a schematic diagram of an optional timing relationship provided by an embodiment of the present invention.
  • FIG. 16 is a schematic diagram of an optional structure of a terminal device according to an embodiment of the present invention.
  • FIG. 17 is a schematic diagram of an optional structure of a network device provided by an embodiment of the present invention.
  • FIG. 18 is a schematic diagram of an optional structure of an electronic device provided by an embodiment of the present invention.
  • the random access process can be triggered by the following events:
  • the UE establishes a wireless connection during initial access: the UE goes from the idle state (i.e. RRC_IDLE state) of the radio resource connection control (Radio Resource Control, RRC) to the connected state (i.e. RRC_CONNECTED state); among them, in the RRC_IDLE state, no RRC connection is established , In the RRC_CONNECTED state, an RRC connection is established;
  • RRC_IDLE state Radio Resource Control
  • RRC_CONNECTED Radio Resource Control
  • RRC connection reestablishment process so that the UE can reestablish the wireless connection after the radio link fails;
  • Handover UE needs to establish uplink synchronization with the new cell
  • the UL In the RRC_CONNECTED state, when the downlink (DL) data arrives, the UL is in an out-of-synchronization state;
  • the uplink (Up Link, UL) data arrives.
  • the UL is in an out-of-synchronization state or there is no Physical Uplink Control Channel (PUCCH) resource for sending a scheduling request (Scheduling Request, SR) ;
  • PUCCH Physical Uplink Control Channel
  • the UE transitions from the connected inactive state (that is, the RRC_INACTIVE state) to the RRC_CONNECTED state;
  • SCell Secondary Cell
  • SI System Information
  • the random access process includes the first type of random access and the second type of random access.
  • the first type of random access the terminal device and the network device need to perform 4 information exchanges; therefore, the first type of random access is also called 4-steps RACH.
  • the second type of random access two information exchanges are required between the terminal device and the network device. Therefore, the second type of random access is also called 2-steps RACH.
  • random access includes contention-based random access and non-contention-based random access.
  • random access includes the first type of random access and the second type of random access.
  • the NR Rel-15 version mainly supports contention-based random access methods and non-contention-based random access methods.
  • the processing flow of contention-based random access includes the following four steps:
  • Step S101 The terminal device sends a random access preamble (Preamble) to the network device through a message 1 (message 1, Msg1).
  • Preamble a random access preamble
  • the terminal device selects the PRACH time domain resource, and sends the selected Preamble on the selected PRACH time domain resource; the network device can estimate the uplink Timing and the size of the uplink authorization required for the terminal device to transmit Msg3 based on the Preamble.
  • Step S102 The network device sends a message 2 (message 2, Msg2) to the terminal device.
  • the network device After the network device detects that a terminal device sends a preamble, it sends an RAR to the terminal device through Msg2 to inform the terminal device of the uplink resource information that can be used when sending Msg3, and to assign a temporary wireless network temporary identity (Radio Network Tempory Identity, RNTI), providing time advance command for terminal equipment, etc.
  • RNTI Radio Network Tempory Identity
  • the terminal device After sending Msg1, the terminal device opens a RAR time window and monitors the Physical Downlink Control Channel (PDCCH) within the RAR time window; the monitored PDCCH uses random access RNTI (Random Access RNTI, RA-RNTI)
  • RA-RNTI Random Access RNTI
  • RA-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id;
  • s_id is the sequence number of the first OFDM symbol of the PRACH opportunity
  • t_id is the sequence number of the first time slot of the PRACH opportunity in a system frame
  • f_id is the sequence number of the PRACH opportunity in the frequency domain
  • ul_carrier_id is used to transmit the preamble The uplink carrier number.
  • the RA-RNTI is related to the physical random access channel (Physical Random Access Channel, PRACH) time-frequency resources.
  • PRACH Physical Random Access Channel
  • the terminal can obtain the physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) scheduled by the PDCCH.
  • the PDCCH includes RAR, and RAR specifically includes the following information: subheader (subheader), RAPID, payload (payload), uplink (UpLink, UL) grant (grant), and Temporary cell RNTI (Cell RNTI, C-RNTI);
  • the subheader of RAR contains BI, which is used to indicate the backoff time of retransmitting Msg1;
  • RAPID in RAR is the preamble index (preamble index) received in response to the network;
  • the payload of RAR contains TAG, Used to adjust the uplink timing;
  • UL grant is used to schedule the uplink resource indication of Msg3;
  • Temporary C-RNTI used to scramble the PDCCH (initial access) of Msg4.
  • the terminal device If the terminal device receives the PDCCH scrambled by the RAR-RNTI, and the RAR contains the preamble index sent by itself, the terminal device considers that it has successfully received the random access response.
  • Step S103 The terminal device sends Msg3 in the uplink resource specified by the RAR message.
  • the message of Msg3 is mainly used to notify the network device of what event triggered the RACH process. For example, if it is an initial random access event, the terminal device ID and establishment cause will be carried in Msg3; if it is an RRC reestablishment event, the connected terminal device identification and establishment cause will be carried in Msg3.
  • the ID carried by Msg3 can enable the contention conflict to be resolved in step S104.
  • Step S104 the network device sends Msg4 to the terminal device.
  • Msg4 includes contention resolution messages, and at the same time allocates uplink transmission resources for terminal equipment.
  • Msg4 has two functions. One function is for contention conflict resolution, and the other is for the network to transmit RRC configuration messages to the terminal. There are two ways to resolve the contention conflict: one is that if the UE carries the C-RNTI in the Msg3, the Msg4 uses the C-RNTI scrambled PDCCH scheduling. The other is that if the UE does not carry C-RNTI in Msg3, such as initial access, Msg4 uses TC-RNTI scrambled PDCCH scheduling.
  • the conflict resolution method is that the UE receives the PDSCH of Msg4 and matches the common PDSCH in the PDSCH. Control Channel (Common Control Channel CCCH) Service Data Unit (Service Data Unit, SDU).
  • Control Channel Common Control Channel CCCH
  • SDU Service Data Unit
  • the terminal device When the terminal device receives the Msg4 sent by the network device, it will detect whether the terminal device specific temporary identifier sent by the terminal device in Msg3 is included in the contention resolution message sent by the base station. If it is included, it indicates that the terminal device random access process is successful, otherwise it is considered random If the process fails, the terminal device needs to initiate the random access process again from the first step.
  • Msg4 Another function of Msg4 is to send radio resource control (Radio Resource Control, RRC) configuration messages to terminal devices.
  • RRC Radio Resource Control
  • the processing flow of the non-competition-based random access method includes the following three steps:
  • Step S201 The network device sends the allocated random access preamble to the terminal device.
  • Step S202 The terminal device sends a random access preamble to the network device through Msg1.
  • PRACH time domain resources and preamble can be specified by network equipment.
  • Step S203 The network device sends Msg2 to the terminal device.
  • the network device After the network device detects that a terminal device sends a Preamble, it sends a RAR to the terminal device through Msg2.
  • the terminal device After sending the Msg1, the terminal device opens a random access response time window, and monitors the RA-RNTI scrambled PDCCH within the random access response time window.
  • the random access response please refer to the description in step S102.
  • the random access process ends.
  • the second type of random access in the NR Rel-16 version can increase the delay while also reducing the signaling overhead.
  • the processing flow of the second type of random access is shown in Figure 3, including:
  • Step S301 The terminal device sends MsgA to the network device.
  • MsgA includes the first type of random access Msg1 and Msg3.
  • Step S302 The network device sends MsgB to the terminal device.
  • MsgB includes the first type of random access Msg2 and Msg4.
  • the UE After sending the Msg1, the UE will monitor the RA-RNTI scrambled PDCCH within the RAR time window to receive the corresponding RAR. If the RAR is not received within the RAR time window, it is considered that this random access has failed, and the UE will resend Msg1. When the number of times the UE sends Msg1 reaches a certain threshold, the UE will indicate to the higher layer that a random access problem has occurred.
  • the RAR time window starts at the first PDCCH occasion after the UE sends the Msg1.
  • the window length of the RAR time window is configured by the network. Currently, the maximum value that the RAR time window can support is 10 ms.
  • the UE will also start a time window after sending the MsgA, and the UE will monitor the MsgB from the network device in this time window. If the UE does not receive MsgB within this time window, the UE considers that this random access fails.
  • the signal propagation delay between the UE and the communication satellite in NTN is greatly increased.
  • the signal transmission delays between them and the communication satellite may also be quite different. Therefore, if NR's random access mechanism is directly used in NTN, there will be the following two problems:
  • the terminal device needs to wait at least one round trip time (RTT) from sending Msg1 to receiving msg2.
  • RTT is the transmission time of Msg1 plus the transmission time of Msg2. Since the coverage area of the base station under the cellular network is small, and the signal transmission time between the UE and the base station is short, in NR, the UE opens the RAR time window at the first PDCCH occasion after sending Msg1.
  • the signal transmission time between the terminal equipment and the communication satellite is relatively long, the RTT can be as long as 541.46ms, and the time interval from the terminal equipment sending Msg1 to the first PDCCH timing is likely to be less than 1 RTT, if the terminal device in NTN still opens the RAR time window at the first PDCCH timing after sending Msg1, it is very likely that the UE will start the RAR time window prematurely due to the RTT being too large, and the terminal device will listen to RAR ineffectively It will undoubtedly increase terminal power consumption.
  • the signal transmission time difference between different UEs within the coverage of the same base station to the base station is relatively small.
  • Msg1 sent by different terminal devices using the same RACH resource Msg1 sent by different terminal devices arrive at the base station at the same time. Therefore, the current configuration of the RAR time window window length mainly considers the time required for the base station to process Msg1 and schedule Msg2 .
  • communication satellites cover a large area, and different UEs within the coverage area of the same communication satellite are located at different locations, and the signal transmission time between them and the communication satellite may differ greatly.
  • the window length of the RAR time window is not configured long enough, it may cause UEs that are far away from the communication satellite to be unable to receive RAR during the RAR time window because the RTT is too large. If the window length of the RAR time window is configured too long, It will increase the time the UE monitors the RAR, thereby increasing the power consumption of the terminal.
  • the embodiment of the present invention provides a method for monitoring random access response.
  • the method for monitoring random access response in the embodiment of the present invention can be applied to the NTN system.
  • the NTN system 400 applied in the embodiment of the present invention may be as shown in FIG. 4.
  • the communication system 500 may include a network device 410, and the network device 410 may be a device that communicates with a terminal device 420 (or called a communication terminal or terminal).
  • the network device 410 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area to provide services for the terminal devices in the coverage area.
  • the network device 410 is a communication satellite or a UAS (Unmanned Aircraft System, UAS) platform.
  • Communication satellites are divided into low-earth orbit (LEO) communication satellites, medium-earth (Medium-Earth Orbit, MEO) communication satellites, geostationary earth-orbit (GEO) communication satellites, High Elliptical Orbit (HEO) communication satellites, etc.
  • LEO low-earth orbit
  • MEO medium-earth
  • GEO geostationary earth-orbit
  • HEO High Elliptical Orbit
  • the altitude range of low-orbit communication satellites is 500km to 1500km, and the corresponding orbit period is about 1.5 hours to 2 hours.
  • the signal propagation delay of single-hop communication between users is generally less than 20ms.
  • the maximum communication satellite viewing time is 20 minutes.
  • the signal propagation distance is short, the link loss is small, and the requirement for the transmission power of the user terminal is not high.
  • the geosynchronous orbit communication satellite has an orbital height of 35786km and a rotation period of 24 hours around the earth.
  • the signal propagation delay of single-hop communication between users is generally 250ms.
  • communication satellites use multiple beams to cover the ground.
  • a communication satellite can form dozens or even hundreds of beams to cover the ground; a communication satellite beam can cover several beams in diameter. Ten to hundreds of kilometers of ground area.
  • the communication system 400 also includes at least one terminal device 420 located within the coverage area of the network device 410.
  • the "terminal device” used herein includes, but is not limited to, a device configured to receive/send communication signals for a communication satellite network; and/or Internet of Things (IoT) devices.
  • a terminal device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a "mobile terminal”.
  • Examples of mobile terminals include, but are not limited to, communication satellite phones; Personal Communications System (PCS) terminals that can combine communication satellite phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/Intranet PDA with access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or other electronic devices including radio telephone transceivers Device.
  • Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the access terminal can be a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), and a handheld with wireless communication function Devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the network device 410 and the terminal device 420 communicate through a service link or a wireless link 440.
  • the network device 410 may communicate with the gateway 430 based on a feeder link or a wireless link 450, and connect to a public data network through the gateway 430.
  • the network device 420 in the communication system 400 includes two network devices 420-1 and a network device 420-2, wherein the network device 420-1 and the network device 420-2 communicate Inter-satellite links (ISL) 460 communicate, and the network device 420-1 is used to transparently transmit the payload: radio frequency filtering, frequency conversion and amplification. The signal will not be changed through the transparent transmission network device 420-1.
  • the network equipment 420-2 is used to regenerate the payload: radio frequency filtering, frequency conversion and amplification, as well as demodulation and decoding, conversion and/or routing, encoding and modulation.
  • a device with a communication function in the network/system in the embodiment of the present invention may be referred to as a communication device.
  • the communication device may include a network device 410 and a terminal device 420 with communication functions, and the network device 410 and the terminal device 420 may be the specific devices described above. It is not repeated here; the communication device may also include other devices in the communication system 300, such as other network entities such as UAS, which is not limited in the embodiment of the present invention.
  • An optional processing procedure of the method for monitoring random access responses provided by the embodiment of the present invention, as shown in FIG. 6, includes the following steps:
  • Step S601 The terminal device determines a window parameter of the RAR time window, and the window parameter includes an offset.
  • the start time offset is used for the terminal device to determine the start time of the RAR time window; the RAR time window is used to monitor the RAR sent by the network device; the start time is the first physical time after the offset time Initiation time of the downlink control channel PDCCH; the offset time is the time obtained by offsetting the time at which the terminal device sends the random access request by the initial time offset. That is, the offset is used by the terminal device to determine the start time of the RAR time window used to monitor the RAR sent by the network device; the start time is the time delay for the terminal device to issue a random access request The first physical downlink control channel PDCCH timing after the latter offset.
  • step S601 may be executed as step S601a: the terminal device determines the offset according to the distance between itself and the network device.
  • the value of the offset is the RTT of the information transmission between the terminal device and the network device.
  • calculation formula of RTT can be formula (1):
  • d is the distance between the location of the terminal device and the network device
  • v is the signal transmission rate.
  • the embodiment of the present invention does not impose any limitation on the calculation method of RTT.
  • the distance from the network device may be different. At this time, the offset values determined by different terminal devices are different.
  • the terminal device determines the offset according to the distance between itself and the network device.
  • a terminal device with positioning capability can estimate the distance between its location and the network device based on its own positioning capability, thereby determining the RTT.
  • step S601 may be executed as step S601b: the terminal device receives the offset sent by the network device.
  • step S600 is further included.
  • the network device sends the window parameter of the RAR time window to the terminal device, and the window parameter includes an offset.
  • the network device selects the offset to be sent to the terminal device from at least one of the supported offsets.
  • the supported offset can be preset in the network device, and when it is determined that the offset needs to be sent to the terminal device, one or more offsets can be selected and sent from the supported time offsets, and the The selected offset is sent to the terminal device.
  • the network device determines the offset sent to the terminal device, it broadcasts the determined offset in the broadcast message carried.
  • the network device determines that there are terminal devices that do not have positioning capabilities among the terminal devices within its own coverage area, and then carries the determined offset in a broadcast message for broadcast.
  • There are terminal devices that do not have positioning capabilities among the terminal devices within the coverage of the terminal device including the following two scenarios:
  • Scenario 1 Some terminal devices have positioning capabilities, and the rest of the devices do not have positioning capabilities.
  • Scenario 2 All terminal devices do not have positioning capabilities.
  • the embodiment of the present invention does not make any limitation for the specific implementation in which the network device selects the offset value sent to the terminal device from the supported offset values.
  • the network device selecting the offset to send to the terminal device from the supported at least one offset includes: the network device according to a first round-trip transmission time; the first round-trip transmission time Is the round-trip transmission time between the location closest to the network device and the network device within the ground range covered by the network device; the network device is offset from at least one supported by the first round-trip transmission time Select the offset sent to the terminal device from the amount.
  • the first round-trip transmission time is the smallest round-trip transmission time RTT_min among the round-trip transmission times corresponding to the locations covered by the network equipment, and RTT_min is calculated by formula (2):
  • RTT_min 2*d_min/v Formula (2)
  • d_min is the distance between the nearest location to the network device within the ground range covered by the network device and the network device, that is, the shortest distance between the network device and the covered ground range
  • v is the signal transmission rate
  • the selecting the offset to be sent to the terminal device from the at least one supported offset according to the first round-trip transmission time includes:
  • the at least one supported offset includes a candidate offset less than the first round-trip transmission time, and the largest candidate offset among the candidate offsets is selected as the offset sent to the terminal device; supported The at least one offset does not include a candidate offset smaller than the first round-trip transmission time, and the smallest offset among the at least one supported offset is selected as the offset sent to the terminal device.
  • the offsets supported by the network device include: offset 1, offset 2, offset 3, offset 4, offset 5, and offset 6, and they are sorted from largest to smallest: Offset 1, Offset 2, Offset 3, Offset 4, Offset 5, and Offset 6.
  • offset 1, offset 2, and offset 3 are all greater than RTT_min
  • offset 4, offset 5, and offset 6 are all less than RTT_min, it will be less than the offset of RTT_min: offset 4
  • the offset 4 that is closest to RTT_min among offset 5 and offset 6 is used as the offset sent to the terminal device.
  • the offset 1, offset 2, offset 3, offset 4, offset 5, and offset 6 are all greater than RTT_min, the smallest offset 6 is selected as the offset sent to the terminal device Shift.
  • the terminal device performs step S601b: the terminal device receives the offset sent by the network device.
  • the terminal device can perform step S601a or step S610b based on whether it has positioning capability.
  • the terminal device can also perform step S601a and step S610b, and select the offset determined in step S601a or step S610b as Control the offset of the RAR time window.
  • the terminal device may receive the offset broadcast by the network device through a broadcast message.
  • the offsets of the network device broadcasts received by them are the same.
  • the terminal device may receive the offset broadcast by the network device based on the System Information Block (SIB) in the broadcast message.
  • SIB System Information Block
  • Step S602 The terminal device determines the start time of the RAR time window based on the offset.
  • the start time is the first physical downlink control channel PDCCH opportunity after the reference time; the reference time is the time delay for the terminal device to send the random access request by an offset.
  • the message corresponding to the random access request is Msg1 shown in FIG. 1 or FIG. 2, and the message corresponding to the monitored RAR is Msg2 shown in FIG. 1 or FIG. 2.
  • the message corresponding to the random access request is MsgA shown in FIG. 3, and the message corresponding to the monitored RAR may be MsgB shown in FIG. 3.
  • the terminal device sends a random access request at time T1, and the time obtained after delaying T1 by an offset RAR_TimeOffset is the reference time T2, that is, the time difference between T1 and T2 is an offset RAR_TimeOffset ,
  • the time point T3 is the first PDCCH opportunity after T2, and T3 is the start time of the RAR time window 801.
  • the terminal determining the window parameter in step S601 further includes: at least one window length; correspondingly, as shown in FIG. 9, the method further includes step S603: the terminal device determines based on the at least one window length The maximum time of the RAR time window.
  • the window length represents the longest duration of the RAR time window.
  • the terminal device monitors the RAR returned by the network device within the window length range until the RAR is monitored or the monitoring duration reaches the window length, that is, the RAR time window expires, and the terminal device stops monitoring the RAR.
  • the terminal device monitors the RAR within the RAR time window and determines that the random access is successful.
  • the terminal device does not monitor the RAR within the RAR time window, determines that the random access fails, reports the high-level random access failure or re-initiates the random access process.
  • determining the at least one window length by the terminal device in step S603 includes: the terminal device receiving the at least one window length sent by the network device.
  • the window parameter sent by the network device to the terminal device further includes: at least one window length, and the window length is used for the The terminal device determines the longest time of the RAR time window.
  • the at least one window length includes at least one of the following three situations:
  • the first window length is smaller than the second window length.
  • the network device may send the first window length to some terminal devices, send the second window length to some terminals, and send the first window length and the second window length to the rest.
  • the terminal devices within the coverage of the network device include terminal 1 to terminal 20, and the network device sends the first window length to the terminal 1-5, and sends the first window length and the second window length to the terminal 6-20.
  • the terminal devices within the coverage of the network device include the terminal 1 to the terminal 20, and the network device sends the first window length to the terminal 1-7 and the second window length to the terminal 8-20.
  • the terminal devices within the coverage of the network device include the terminal 1 to the terminal 20, and the network device sends the second window length to the terminal 1-10, and sends the first window length and the second window length to the terminal 11-20.
  • the window length sent by the network device is not limited in any way.
  • the network device when all terminal devices within the coverage of the network device have positioning capabilities, the network device sends the first window length to the terminal device.
  • the network device in the case that none of the terminal devices within the coverage of the network device has the positioning capability, the network device sends the second window length to the terminal device.
  • the network device in the case that part of the terminal device within the coverage of the network device has the positioning capability and the remaining part does not have the positioning capability, the network device sends the first window length and the second window length to the terminal device.
  • the first window length, the first window length is determined according to the scheduling time of the network device; the scheduling time is the time reserved by the network device for processing random access requests and RAR.
  • the scheduling time network device reserves time for processing Msg1 and scheduling Msg2.
  • the scheduled time network device reserves the time for processing MsgA and scheduling MsgB.
  • the second window length is determined according to the round-trip transmission time difference and the scheduling time of the network device, the round-trip transmission time difference is the time difference between the first round-trip transmission time and the second round-trip transmission time, and the first round-trip time Is the round-trip transmission time between the location closest to the network device and the network device within the ground range covered by the network device; the second round-trip time is the distance from the network within the ground range covered by the network device The round-trip transmission time between the farthest location of the device and the network device; the scheduling time is the time reserved by the network device for processing random access requests and RAR.
  • the terminal device calculates the reference round-trip transmission time RTT_refe according to the round-trip transmission time difference RTT_delta and the scheduling time process_time, and selects the second window length from at least one supported window length according to the reference round-trip transmission time RTT_refe.
  • the calculation formula of the reference round-trip transmission time RTT_refe can be formula (3):
  • RTT_refe RTT_delta+process_time Formula (3)
  • RTT_delta 2*(d_max-d_min)/v; that is, RTT_refe can be calculated by formula (4):
  • RTT_refe 2*(d_max-d_min)/v+process_time Formula (4);
  • d_max is the distance between the ground location farthest from the communication satellite and the network device in the coverage area of the network device
  • d_min is the distance between the ground location closest to the communication satellite in the coverage area of the network device and the network device.
  • process_time is the time reserved by the network device for processing Msg1 (or MsgA) and scheduling Msg2 (or MsgB).
  • the at least one supported window length includes a candidate window length greater than RTT_refe, and the smallest candidate window length among the candidate window lengths is selected as the second window length; the at least one supported window length does not include a candidate greater than RTT_refe Window length, the largest window length among at least one window length supported is selected as the second window length.
  • the window lengths supported by network devices include: window length 1, window length 2, window length 3, window length 4, window length 5, and window length 6, and the order from smallest to largest is: window length 1, window length 2, Window length 3, window length 4, window length 5 and window length 6.
  • window length 1, window length 2, and window length 3 are all less than RTT_refe
  • window length 4, window length 5, and window length 6 are all greater than RTT_refe
  • the window length 4 closest to RTT_refe is taken as the second window length.
  • window length 1, window length 2, window length 3, window length 4, window length 5, and window length 6 are all less than RTT_refe
  • the largest window length 6 is selected as the second window length.
  • the network device broadcasts at least one window length to be sent through a broadcast message
  • the terminal device receives at least one window length of the RAR time window broadcast by the network device through the broadcast message.
  • the window lengths of the network device broadcasts received by them may be the same or different.
  • the terminal device may receive at least one window length broadcast by the network device based on the SIB in the broadcast message.
  • the terminal device may receive the offset and at least one window length based on the same SIB.
  • the terminal device may receive the offset and at least one window length based on different SIBs.
  • the terminal device determines the longest time of the RAR time window based on the first window length. In the case that the terminal device does not have a positioning capability, the terminal device determines the longest time of the RAR time window based on the second window length.
  • the terminal device has a positioning capability as an example to illustrate the terminal device determining window length.
  • the terminal equipment within the coverage of the network equipment has the positioning capability.
  • the terminal equipment receives the first window length, and uses the received first window length as the longest time of the RAR time window; the part of the terminal equipment within the coverage of the network equipment has positioning Ability, some do not have the positioning capability, the terminal device receives the first window length and the second window length, and if the terminal device has the positioning capability, the received first window length is used as the maximum time of the RAR time window.
  • the terminal device does not have the positioning capability as an example to illustrate the terminal device determining the window length.
  • the terminal equipment within the coverage of the network equipment does not have the positioning capability, and the terminal equipment receives the second window length, and the received second window length is used as the longest time of the RAR time window; the part of the terminal equipment within the coverage of the network equipment has positioning Ability, some do not have the positioning capability, the terminal device receives the first window length and the second window length, in the case that the terminal device does not have the positioning capability, the received second window length is used as the maximum time of the RAR time window.
  • the communication satellite configures the window parameters of the RAR time window through broadcast.
  • the configured window parameters include at least one RAR time window offset value and at least one window length, and all UEs start and
  • the behavior of maintaining the RAR time window follows the configuration of the communication satellite; among them, when the random access is the first type of random access, the RAR time window is the time window for monitoring Msg2, and when the random access is the second type of random access, The RAR time window is the time window for monitoring MsgB.
  • Step S1001 The UE receives the offset and window length of the RAR time window configured by the communication satellite.
  • the window parameters received by the UE from the network side include: the offset RAR_TimeOffset of the RAR time window and the window length of the RAR time window (ra-ResponseWindow).
  • the window parameter is the common configuration of the cell and can be carried in the system message.
  • SIBx (x is greater than or equal to 1) is used to carry window parameters.
  • the communication satellite can be determined according to the signal transmission RTT_min between the closest position to the communication satellite and the communication satellite within the ground range covered by the communication satellite.
  • the calculation formula of RTT_min is shown in formula (2),
  • RTT_min 2*d_min/v Formula (2)
  • d_min is the distance between the closest position to the communication satellite and the communication satellite within the ground range covered by the communication satellite
  • v is the signal transmission speed
  • the RAR_TimeOffset in the window parameter is configured to be the RAR_TimeOffset that is smaller than RTT_min and closest to RTT_min among all supported RAR_TimeOffsets.
  • the RAR_TimeOffset in the window parameter is configured as the smallest RAR_TimeOffset among all supported RAR_TimeOffsets.
  • the offset configured by the network device may be referred to as configured RAR_TimeOffset_config.
  • RAR_TimeOffset here depends on the communication satellite.
  • the above is only an implementation method for the communication satellite to select the RAR_TimeOffset_config in the window parameter from the supported RAR_TimeOffset.
  • the network can also determine the RAR_TimeOffset_config in the window parameter according to other methods. .
  • RTT_refe 2*(d_max-d_min)/v+process_time formula (4);
  • d_max is the distance between the ground position farthest from the communication satellite and the communication satellite in the coverage area of the communication satellite
  • d_min is the distance between the ground position closest to the communication satellite in the coverage area of the communication satellite and the communication satellite
  • v is the signal Transmission speed
  • process_time is the time reserved by the communication satellite for processing Msg1 and scheduling Msg2.
  • the Ra-ResponseWindow in the window parameter is configured as the Ra-ResponseWindow that is greater than RTT_refe and closest to RTT_refe among all supported Ra-ResponseWindow.
  • the Ra-ResponseWindow in the window parameter is configured as the largest Ra-ResponseWindow among the supported Ra-ResponseWindow values.
  • Ra-ResponseWindow here depends on the implementation of the network.
  • the above is only an implementation method for the communication satellite to select the Ra-ResponseWindow in the window parameters from the supported Ra-ResponseWindow.
  • the network can also be based on other methods. Determine the Ra-ResponseWindow in the window parameter.
  • Step S1002 the UE sends Msg1 to the communication satellite.
  • Step S1003 The UE performs RAR monitoring according to the offset and window length of the received RAR time window.
  • the UE starts to monitor the RA-RNTI scrambled PDCCH at the first PDCCH timing after the RAR_TimeOffset duration after sending Msg1, and receives the corresponding RAR.
  • the longest time the UE monitors the RAR is the received Ra-ResponseWindow.
  • RAR_TimeOffset and Ra-ResponseWindow are both values configured using communication satellites.
  • the three UEs within the coverage of the communication satellite are based on the SSB to receive the RAR time window offset RAR_TimeOffset and the window length Ra-ResponseWindow sent by the communication satellite.
  • the UE starts the RAR time window, and the UE monitors and receives the RAR during the RAR time window (the RARs of UE1, UE2, and UE3 are RAR_1, respectively) , RAR_2 and RAR_3), until the RAR is successfully received or the RAR time window expires.
  • RAR_TimeOffset and Ra-ResponseWindow adopt the value configured by the communication satellite.
  • the signal transmission delays of UE1, UE2 and UE3 are respectively: delay_1, delay_2 and delay_3.
  • the communication satellite configures the window parameters of the RAR time window by broadcasting.
  • the window parameters include the window length of at least one RAR time window.
  • the UE transmits RTT according to the estimated signal between itself and the communication satellite Determine the offset of the RAR time window, and monitor the maximum time of Msg2/MsgB (that is, the window length of the time window) follow the configuration of the communication satellite.
  • the RAR time window is the time window for monitoring Msg2
  • the RAR time window is the time window for monitoring MsgB.
  • Step S1201 The UE receives the window length of the RAR time window configured by the communication satellite.
  • the window length of the RAR time window configured by the network is a common configuration of the cell and can be carried in a system message.
  • SIBx (x is greater than or equal to 1) is used to carry the window length of the RAR time window.
  • the communication satellite can determine the Ra-ResponseWindow according to the time required for processing Msg1 and scheduling Msg2.
  • Step S1202 The UE determines the offset of the RAR time window based on the positioning capability.
  • Step S1203 the UE sends Msg1 to the communication satellite.
  • Step S1204 the UE performs RAR monitoring according to the determined offset of the RAR time window and the window length of the received RAR time window.
  • the UE starts the RAR time window at the first PDCCH opportunity after the time RAR_TimeOffset after sending Msg1, and the longest time the UE monitors the RAR is Ra-ResponseWindow.
  • RAR_TimeOffset adopts the value calculated by the UE in step S902
  • Ra-ResponseWindow adopts the value configured by the communication satellite.
  • UE1, UE2, and UE3 are based on the window length of the RAR time window sent by the SSB to receive the communication satellite, and each UE estimates its communication with the communication satellite based on the positioning capability.
  • the signal transmission RTTs are RTT_1, RTT_2, and RTT_3, respectively, to determine the offset of the RAR time window of the UE.
  • delay_1, delay_2, and delay_3 are the signal transmission delays of UE1, UE2, and UE3, respectively.
  • UE1 For UE1, UE1 sends Msg1, that is, the first PDCCH timing after the RAR_TimeOffset_1 after Msg1_1 has passed, UE1 starts the RAR time window, and the duration of the RAR time window adopts the value configured by the communication satellite.
  • UE2 For UE2, UE2 sends Msg1, that is, the first PDCCH opportunity after the RAR_TimeOffset_2 time of Msg1_2 has passed, UE2 starts the RAR time window, and the length of the RAR time window adopts the value configured by the network.
  • UE3 For UE3, UE3 sends Msg1, that is, the first PDCCH opportunity after the RAR_TimeOffset_3 time of Msg1_3 has passed, UE3 starts the RAR time window, and the duration of the RAR time window adopts the value configured by the communication satellite.
  • Each UE monitors and receives RAR during the RAR time window (the RARs of UE1, UE2, and UE3 are RAR_1, RAR_2, and RAR_3, respectively) until the RAR is successfully received or the RAR time window expires.
  • the communication satellite configures the window parameters of the RAR time window by broadcasting.
  • the configured window parameters include: the offset value of at least one RAR time window and at least two Window length.
  • Step S1401 the UE receives the window parameter of the RAR time window configured by the communication satellite;
  • the configured window parameters include: the start time offset of one RAR time window and the window length of two RAR time windows.
  • the configured window parameter is a common configuration of the cell and can be carried in a system message.
  • SIBx (x is greater than or equal to 1) is used to carry window parameters.
  • the window length Ra-ResponseWindow of the RAR time window includes: a long window length Ra-ResponseWindow_long and a short window length Ra-ResponseWindow_short.
  • the long window length Ra-ResponseWindow_long can be determined based on the following factors: the difference between the position closest to the communication satellite and the position farthest from the communication satellite and the signal transmission RTT between the communication satellite and the communication satellite processing within the ground range covered by the communication satellite.
  • the time required for Msg1 and scheduling Msg2 is determined, that is, the same method as the Ra-ResponseWindow in step S1001 of the first embodiment is adopted.
  • the short window length Ra-ResponseWindow_short can be determined according to the time required for the communication satellite to process Msg1 and schedule Msg2, that is, the same method as in step S1201 of the second embodiment is adopted.
  • the offset and window length of the RAR time window depend on the realization of the communication satellite.
  • the above is only a method for the communication satellite to determine the window parameters. These window parameters can also be determined according to other methods.
  • Step S1402 The UE determines the offset and window length of the RAR time window based on whether it has positioning capability.
  • the offset of the RAR time window is the signal transmission RTT estimated by the UE to communicate with the communication satellite, and the window length of the RAR time window is the short window length Ra-ResponseWindow_short configured by the network.
  • the offset of the RAR time window is RAR_TimeOffset_config configured by the network
  • the window length of the RAR time window is the long window length Ra-ResponseWindow_long configured by the communication satellite.
  • Step S1403 the UE sends Msg1 to the communication satellite.
  • Step S1404 The UE performs RAR monitoring according to the determined offset and window length of the RAR time window.
  • the UE starts the RAR time window at the first PDCCH opportunity after the RAR_TimeOffset after sending Msg1, and the longest time the UE monitors the RAR is Ra-ResponseWindow.
  • RAR_TimeOffset and Ra-ResponseWindow adopt the values determined in step S1102.
  • three UEs within the coverage of the communication satellite UE1, UE2 and UE3 respectively receive the window parameters of the RAR time window sent by the communication satellite based on the SSB.
  • the received window parameters include: the start of 1 RAR time window
  • the time offset is RAR_TimeOffset_config and 2 window lengths (Ra-ResponseWindow_short and Ra-ResponseWindow_long).
  • the signal transmission delays of UE1, UE2 and UE3 are respectively: delay_1, delay_2 and delay_3.
  • each UE determines the offset and window length of its respective RAR time window based on whether it has positioning capability.
  • the window length Ra-ResponseWindow_3 Ra-ResponseWindow_short.
  • the UE For each UE, in the random access process, the UE starts the RAR time window at the first PDCCH time after the RAR_TimeOffset time after sending Msg1 (ie Msg1_1, Msg1_2, and Msg1_3), and the UE monitors the RAR (UE1, UE2, and The RAR of UE3 is RAR_1, RAR_2 and RAR_3 respectively) The longest time is Ra-ResponseWindow.
  • Msg1 ie Msg1_1, Msg1_2, and Msg1_3
  • the longest time is Ra-ResponseWindow.
  • the RAR monitoring method provided by the embodiment of the present invention can be used to ensure that the terminal equipment in the NTN can effectively receive Msg2/MsgB, and at the same time, the power saving is taken into account to the greatest extent.
  • an embodiment of the present invention also provides a terminal device.
  • the composition structure of the terminal device is shown in FIG. 16, and the terminal device 1600 includes:
  • the first determining unit 1601 is configured to determine window parameters of the RAR time window, where the window parameters include: an offset;
  • the second determining unit 1602 is configured to determine the start time of the RAR time window based on the offset; the RAR time window is used to monitor the RAR sent by the network device; the start time is the first physical downlink after the reference time Control channel PDCCH timing; the reference time is to delay the time when the terminal device sends the random access request by an offset.
  • the first determining unit 1601 is further configured to:
  • the offset is determined according to the distance between the terminal device and the network device.
  • the first determining unit 1601 is further configured to determine the offset according to the distance between the terminal device and the network device when the terminal device has positioning capability.
  • the first determining unit 1601 is further configured to:
  • the first determining unit 1601 is further configured to receive the offset sent by the network device when the terminal device does not have positioning capability.
  • the first determining unit 1601 is further configured to receive the offset broadcast by the network device through a broadcast message.
  • the window parameter further includes: at least one window length;
  • the terminal device further includes: a third determining unit configured to:
  • the longest time of the RAR time window is determined based on the window length.
  • the first determining unit 1601 is further configured to:
  • the terminal device receives the at least one window length sent by the network device.
  • the first determining unit 1601 is further configured to: the terminal device receives at least one window length of the RAR time window broadcast by the network device through a broadcast message.
  • the at least one window length includes: a first window length and a second window length, and the first window length is smaller than the second window length.
  • the third determining unit is further configured to determine the longest time of the RAR time window based on the first window length when the terminal device has positioning capability.
  • the third determining unit is further configured to determine the longest time of the RAR time window based on the second window length when the terminal device does not have positioning capability.
  • An embodiment of the present invention also provides a terminal device, including a processor and a memory for storing a computer program that can run on the processor, where the processor is used to execute the above-mentioned terminal device when the computer program is running. Steps of the method of monitoring random access responses.
  • the embodiment of the present invention also provides a network device.
  • the sending unit 1701 is configured to send the window parameter of the RAR time window to the terminal device by the network device, where the window parameter includes: an offset;
  • the offset is used for the terminal device to determine the start time of the RAR time window; the RAR time window is used to monitor the RAR sent by the network device; the start time is the first physical downlink control channel PDCCH after the reference time Timing; the reference time is to delay the time when the terminal device sends a random access request by an offset.
  • the network device 1700 further includes: a selection unit configured to:
  • the offset to be sent to the terminal device is selected from at least one offset supported.
  • the selection unit is further configured to:
  • the network device is based on a first round-trip transmission time; the first round-trip transmission time is the round-trip transmission time between the nearest location to the network device and the network device within the ground range covered by the network device;
  • the network device selects the offset to be sent to the terminal device from at least one offset supported by the first round-trip transmission time.
  • the selection unit is further configured to:
  • the largest candidate offset among the candidate offsets is selected as the offset sent to the terminal device the amount
  • the smallest offset among the at least one supported offset is selected and sent to the terminal The offset of the device.
  • the window parameter further includes: at least one window length, and the window length is used by the terminal device to determine the maximum time of the RAR time window.
  • the at least one window length includes: a first window length, the first window length is determined according to the scheduling time of the network device; the scheduling time is that the network device is for processing random access requests And the time reserved by RAR.
  • the at least one window length includes: a second window length, the second window length is determined according to the round-trip transmission time difference and the scheduling time of the network device, and the round-trip transmission time difference is the first round-trip transmission time And the second round-trip transmission time, where the first round-trip time is the round-trip transmission time between the nearest location to the network device and the network device within the ground range covered by the network device; the second round-trip transmission time Time is the round-trip transmission time between the location farthest from the network device and the network device within the ground range covered by the network device; the scheduling time is the network device's ability to process random access requests and RAR pre- Time to stay.
  • An embodiment of the present invention also provides a network device, including a processor and a memory for storing a computer program that can run on the processor, where the processor is used to execute the above-mentioned network device when the computer program is running. Steps of the method of monitoring random access responses.
  • the electronic device 1800 includes: at least one processor 1801, memory 1802, and at least one network interface 1804.
  • the various components in the electronic device 1800 are coupled together through the bus system 1805. It can be understood that the bus system 1805 is used to implement connection and communication between these components.
  • the bus system 1805 also includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are marked as the bus system 1805 in FIG. 18.
  • the memory 1802 may be a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memory.
  • the non-volatile memory may be ROM, Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), and electrically erasable Programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), magnetic random access memory (FRAM, ferromagnetic random access memory), flash memory (Flash Memory), magnetic surface memory, optical disk, or CD-ROM -ROM, Compact Disc Read-Only Memory); Magnetic surface memory can be disk storage or tape storage.
  • the volatile memory may be random access memory (RAM, Random Access Memory), which is used as an external cache.
  • RAM random access memory
  • SRAM Static Random Access Memory
  • SSRAM synchronous static random access memory
  • DRAM Dynamic Random Access Memory
  • SDRAM Synchronous Dynamic Random Access Memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM enhanced -Type synchronous dynamic random access memory
  • SLDRAM SyncLink Dynamic Random Access Memory
  • direct memory bus random access memory DRRAM, Direct Rambus Random Access Memory
  • DRRAM Direct Rambus Random Access Memory
  • the memory 1802 described in the embodiment of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.
  • the memory 1802 in the embodiment of the present invention is used to store various types of data to support the operation of the electronic device 1800.
  • Examples of such data include: any computer program used to operate on the electronic device 1800, such as an application program 18021.
  • the program for implementing the method of the embodiment of the present invention may be included in the application program 18021.
  • the method disclosed in the foregoing embodiment of the present invention may be applied to the processor 1801 or implemented by the processor 1801.
  • the processor 1801 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 1801 or instructions in the form of software.
  • the aforementioned processor 1801 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and the like.
  • the processor 1801 may implement or execute various methods, steps, and logical block diagrams disclosed in the embodiments of the present invention.
  • the general-purpose processor may be a microprocessor or any conventional processor.
  • the steps of the method disclosed in the embodiments of the present invention can be directly embodied as being executed and completed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a storage medium, and the storage medium is located in the memory 1802.
  • the processor 1801 reads the information in the memory 1802 and completes the steps of the foregoing method in combination with its hardware.
  • the electronic device 1800 may be configured by one or more application specific integrated circuits (ASIC, Application Specific Integrated Circuit), DSP, programmable logic device (PLD, Programmable Logic Device), and complex programmable logic device (CPLD). , Complex Programmable Logic Device), FPGA, general-purpose processor, controller, MCU, MPU, or other electronic components to implement the foregoing method.
  • ASIC Application Specific Integrated Circuit
  • DSP digital signal processor
  • PLD programmable logic device
  • CPLD complex programmable logic device
  • FPGA field-programmable logic device
  • controller MCU
  • MPU or other electronic components to implement the foregoing method.
  • the embodiment of the present invention also provides a storage medium for storing computer programs.
  • the storage medium can be applied to the terminal device in the embodiment of the present invention, and the computer program causes the computer to execute the corresponding process in each method of the embodiment of the present invention.
  • the computer program causes the computer to execute the corresponding process in each method of the embodiment of the present invention.
  • the storage medium can be applied to the network device in the embodiment of the present invention, and the computer program causes the computer to execute the corresponding process in each method of the embodiment of the present invention.
  • the computer program causes the computer to execute the corresponding process in each method of the embodiment of the present invention.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

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Abstract

L'invention concerne un procédé de détection d'une réponse d'accès aléatoire (RAR). Le procédé comprend les étapes suivantes : un dispositif terminal détermine des paramètres de fenêtre d'une fenêtre temporelle de RAR, les paramètres de fenêtre comprenant un décalage ; le dispositif terminal détermine le temps de démarrage de la fenêtre temporelle de RAR sur la base du décalage, la fenêtre temporelle de RAR étant utilisée pour détecter une RAR envoyée par un dispositif de réseau, le temps de démarrage étant une première occasion de canal de commande de liaison descendante physique (PDCCH) après un temps de référence, et le temps de référence étant obtenu en retardant le temps, auquel le dispositif terminal envoie une demande d'accès aléatoire, de l'ordre du décalage. L'invention concerne en outre un autre procédé pour envoyer une RAR, un dispositif terminal, un dispositif de réseau et un support d'informations.
PCT/CN2019/098038 2019-07-26 2019-07-26 Procédé de détection de réponse d'accès aléatoire, dispositif terminal, dispositif de réseau et support d'informations WO2021016773A1 (fr)

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CN201980092825.1A CN113498628B (zh) 2019-07-26 2019-07-26 监听随机接入响应的方法、设备及存储介质

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