WO2023010461A1 - Procédé de rapport d'état d'accès aléatoire, dispositif terminal, et dispositif de réseau - Google Patents

Procédé de rapport d'état d'accès aléatoire, dispositif terminal, et dispositif de réseau Download PDF

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Publication number
WO2023010461A1
WO2023010461A1 PCT/CN2021/111024 CN2021111024W WO2023010461A1 WO 2023010461 A1 WO2023010461 A1 WO 2023010461A1 CN 2021111024 W CN2021111024 W CN 2021111024W WO 2023010461 A1 WO2023010461 A1 WO 2023010461A1
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Prior art keywords
random access
condition information
access condition
reason
pusch
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PCT/CN2021/111024
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English (en)
Chinese (zh)
Inventor
杜忠达
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Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2021/111024 priority Critical patent/WO2023010461A1/fr
Priority to CN202180097733.XA priority patent/CN117223381A/zh
Publication of WO2023010461A1 publication Critical patent/WO2023010461A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • 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 invention relates to the field of communication technology, in particular to a method for reporting random access conditions, terminal equipment and network equipment.
  • the preamble originally reserved for the four-step random access (4-step RACH) process can be used as the random access radio of the 2-step RACH
  • the preamble range corresponding to each random access condition will be very small, resulting in a high probability of random access conflicts.
  • Embodiments of the present invention provide a method for reporting random access conditions, a terminal device and a network device, which can reduce the probability of random access conflicts.
  • a method for reporting random access conditions is provided, which is applied to a terminal device, including:
  • the first PUSCH carries random access condition information, and the random access condition information is used to indicate the reason for triggering random access
  • the first PUSCH is associated with a first preamble signal.
  • a method for reporting random access conditions is provided, which is applied to network devices, including:
  • the first PUSCH carries random access condition information, and the random access condition information is used to indicate the reason for triggering random access
  • the first PUSCH is associated with a first preamble signal.
  • a terminal device including: a transmitter, configured to send a first physical uplink shared channel PUSCH to a network device;
  • the first PUSCH carries random access condition information, and the random access condition information is used to indicate the reason for triggering random access
  • the first PUSCH is associated with a first preamble signal.
  • a network device including: a receiver, configured to receive a first PUSCH sent by a terminal device;
  • the first PUSCH carries random access condition information, and the random access condition information is used to indicate the reason for triggering random access;
  • the first PUSCH is associated with a first preamble signal.
  • a terminal device including: a sending module, configured to send a first physical uplink shared channel PUSCH to a network device;
  • the first PUSCH carries random access condition information, and the random access condition information is used to indicate the reason for triggering random access;
  • the first PUSCH is associated with a first preamble signal.
  • a network device including: a receiving module, configured to receive a first PUSCH sent by a terminal device;
  • the first PUSCH carries random access condition information, and the random access condition information is used to indicate the reason for triggering random access;
  • the first PUSCH is associated with a first preamble signal.
  • a computer-readable storage medium including: computer instructions, which, when run on a computer, cause a processor to execute the method according to the above-mentioned first aspect or any optional implementation manner of the first aspect , or, execute the method of the second aspect or any optional implementation manner of the second aspect.
  • a computer program product including computer instructions.
  • the processor executes the computer instructions, so that the processor executes any one of the above-mentioned first aspect or the first aspect.
  • a chip the chip is coupled with the memory in the terminal device, so that the chip invokes the program instructions stored in the memory during operation, so that the terminal device executes any one of the optional functions of the first aspect or the first aspect above.
  • the method of the implementation manner of the second aspect, or the method of making the network device execute the second aspect or any optional implementation manner of the second aspect.
  • the present invention provides a method for reporting random access conditions.
  • a terminal device can send a first PUSCH to a network device; the first PUSCH carries random access condition information, and the random access condition information is used to indicate triggering random access , wherein the first PUSCH is associated with the first preamble.
  • the terminal device can carry the random access condition information in the first PUSCH associated with the first preamble, compared with indicating the random access condition through the preamble, without being limited by the range of the preamble, and does not need to Further division is made in the reserved preamble, which can reduce the probability of random access collisions.
  • FIG. 1 is a schematic diagram of repeatedly configuring ROs according to a certain period in the time domain provided by an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an association relationship between an RO and an SSB provided by an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a communication system applied by an embodiment of the present invention provided by an embodiment of the present invention
  • FIG. 4 is a schematic flowchart of a method for reporting random access conditions provided by an embodiment of the present invention.
  • FIG. 5 is a first structural schematic diagram of a terminal device provided by an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a network device provided by an embodiment of the present invention.
  • Fig. 7 is a schematic structural diagram of a base station provided by an embodiment of the present invention.
  • FIG. 8 is a second structural schematic diagram of a terminal device provided by an embodiment of the present invention.
  • the terminal device can establish, rebuild or restore a radio resource control ( Radio Resource Control, RRC) link, or in the case of RRC link, through random access to achieve the purpose of initialization of uplink synchronization and power control.
  • RRC Radio Resource Control
  • the base station needs to distinguish the reason why the terminal device sends the random access through the first step of the terminal device in the random access process, so as to implement access control or better complete the random access process. Wherein, in the first step of the random access process, the base station will receive a preamble signal (preamble) sent by the terminal device.
  • preamble preamble
  • the random access radio resource (referred to as the original random access radio resource in this paper) used publicly in the cell configured by the 5G NR system is used for 4 step random access (4 step Random Access Channel, 4 step RACH) at the beginning process.
  • the smallest unit of random access radio resources in the time-frequency domain is called a random access channel opportunity (RACH occasion, RO), and there are 64 preambles in one RO.
  • RACH occasion, RO random access channel opportunity
  • the length of a radio frame is 10 milliseconds, including 10 subframes with a length of 1 millisecond.
  • the number of time slots included in a subframe is related to the sub-carrier space (SCS) of the carrier. For example, there is one time slot in a sub-frame on a carrier with a sub-carrier space of 15KHz.
  • other subcarrier intervals include K time slots, where K is equal to a ratio between other subcarrier intervals and 15 KHz.
  • one subframe may include 8 time slots. There are 14 symbols in one slot.
  • An RO can be several symbols in a time slot in the time domain, that is, a time slot can contain multiple ROs, or a time slot can span several time slots (that is, several time slots constitute a RO).
  • An RO is composed of several consecutive PRBs in the frequency domain, and the configuration of the RO is repeated at a certain period in the time domain in a radio frame.
  • Figure 1 it is a schematic diagram of repeatedly configuring ROs in the time domain according to a certain period.
  • One is to configure additional random access radio resources different from the original random access radio resources
  • the other is to share part of the original random access radio resources. Assuming that the number of ROs associated with an SSB on a certain carrier is greater than 1, there are three current sharing methods:
  • FIG. 2 it is a schematic diagram of an association relationship between RO and SSB.
  • SSB Synchronization Signal Block
  • the SSB associated with an RO is greater than or equal to 1, there is only one RO sharing method, that is, either all ROs can be shared, or all ROs cannot be shared.
  • sequence of association between SSB and RO includes:
  • the PRACH time slot refers to the time slot containing the previous RO.
  • the number of ROs that an SSB can be associated with is 1, 2, 4 and 8.
  • the SSBs associated with one RO can be 1, 2, 4, 8 and 16, that is, a preamble is assigned to each SSB in one RO.
  • the above-mentioned association relationship between SSB and RO can be carried out according to the SSB cycle actually sent in the half frame, that is, according to the SSB sequence number from small to large, it is associated with RO in turn, and after the SSB with the largest sequence number ends, then start the association between the SSB with the smallest sequence number and RO.
  • all the ROs associated with an SSB in such an SSB cycle may be called an SSB-associated RO set.
  • the aforementioned method can be used to share the original random access radio resources originally reserved for the 4-step RACH.
  • a section of preamble can be allocated in the originally reserved preamble as the random access radio resource of 2-step RACH.
  • the current 2-step RACH sharing RO method and the method of determining the preamble range can be applied to the 2-step RACH random access method.
  • a new preamble range is introduced to indicate new random access conditions, further division needs to be made in the existing reserved preamble so that the network can distinguish these new random access trigger conditions.
  • the problem brought about by this is that as the number of newly introduced random access trigger conditions continues to increase, it is limited by the limited preamble range (there are 64 preambles in one RO), so the preamble corresponding to each random access condition The range will be small, leading to an increased probability of random access collisions.
  • network devices need to increase random access resources in order to maintain an appropriate random access collision probability.
  • the random access resources of the system are limited by uplink spectrum resources and cannot be excessively increased, so a new solution is required.
  • the present invention provides a method for reporting random access conditions, in which a terminal device can send a first Physical Uplink Shared Channel (PUSCH) to a network device; if the first PUSCH carries a random access If the random access condition information is used, the random access condition information is used to indicate the reason for triggering the random access; wherein, the first PUSCH is associated with the first preamble signal.
  • the terminal device can carry the random access condition information in the first PUSCH associated with the first preamble information.
  • the terminal device is not limited by the range of the preamble, and does not need to be in the existing Further division is made in the reserved preamble, which can reduce the random access collision probability.
  • the embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, wherein the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • user equipment User Equipment, UE
  • access terminal user unit
  • user station mobile station
  • mobile station mobile station
  • remote station remote terminal
  • mobile device user terminal
  • terminal wireless communication device
  • wireless communication device user agent or user device
  • the terminal device can be a station (STAION, ST) in the WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.
  • STAION, ST Session Initiation Protocol
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites) superior).
  • the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home.
  • a virtual reality (Virtual Reality, VR) terminal device an augmented reality (Augmented Reality, AR) terminal Equipment
  • wireless terminal equipment in industrial control wireless terminal equipment in self driving
  • wireless terminal equipment in remote medical wireless terminal equipment in smart grid
  • wireless terminal equipment in transportation safety wireless terminal equipment in smart city, or wireless terminal equipment in smart home.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • the network equipment may further include access network equipment and core network equipment. That is, the wireless communication system also includes multiple core networks for communicating with access network devices.
  • the access network device may be a long-term evolution (long-term evolution, LTE) system, a next-generation (mobile communication system) (next radio, NR) system or an authorized auxiliary access long-term evolution (LAA- Evolved base station (evolutional node B, abbreviated as eNB or e-NodeB) macro base station, micro base station (also called “small base station”), pico base station, access point (access point, AP), Transmission point (transmission point, TP) or new generation base station (new generation Node B, gNodeB), etc.
  • LTE long-term evolution
  • NR next-generation
  • LAA- Evolved base station evolutional node B, abbreviated as eNB or e-NodeB
  • eNB next-generation
  • NR next-generation
  • the network device may be a device for communicating with the mobile device, and the network device may be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA , or a base station (NodeB, NB) in WCDMA, or an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • Evolutional Node B, eNB or eNodeB evolved base station
  • LTE Long Term Evolutional Node B, eNB or eNodeB
  • gNB network equipment in the network or the network equipment in the future evolved PLMN network or the network equipment in the NTN network, etc.
  • the network device may have a mobile feature, for example, the network device may be a mobile device.
  • the network equipment may be a satellite or a balloon station.
  • the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geosynchronous earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite. ) Satellite etc.
  • the network device may also be a base station installed on land, water, and other locations.
  • the network device may provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, a cell corresponding to a base station), the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell), and the small cell here may include: a metro cell (Metro cell), a micro cell (Micro cell), a pico cell ( Pico cell), Femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • the transmission resources for example, frequency domain resources, or spectrum resources
  • the cell may be a network device (
  • the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell)
  • the small cell here may include: a metro cell (Metro cell), a micro cell (Micro
  • Fig. 3 is a schematic structural diagram of a communication system applied in an embodiment of the present invention
  • the communication system may include network equipment and terminal equipment with communication functions, and the implementation of the present invention can be realized through the interaction between the network equipment and the terminal equipment The method for reporting the random access conditions provided in the example.
  • the technical solution of the embodiment of the present application can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) on unlicensed spectrum unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunications System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.
  • GSM Global System of Mobile
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • V2V Vehicle to Vehicle
  • V2X Vehicle to everything
  • the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, may also be applied to a dual connectivity (Dual Connectivity, DC) scenario, and may also be applied to an independent (Standalone, SA) network deployment scenario.
  • Carrier Aggregation, CA Carrier Aggregation
  • DC Dual Connectivity
  • SA independent network deployment scenario
  • the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered as non-shared spectrum.
  • the embodiment of the present application may be applied to a non-terrestrial communication network (Non-Terrestrial Networks, NTN) system, and may also be applied to a terrestrial communication network (Terrestrial Networks, TN) system.
  • NTN non-terrestrial communication network
  • TN terrestrial communication network
  • the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.
  • the indication information in this embodiment of the present application includes physical layer signaling.
  • the indication information in this embodiment of the present application includes physical layer signaling.
  • DCI Downlink Control Information
  • RRC Radio Resource Control
  • MAC CE Media Access Control Control Element
  • the high-level parameters or high-level signaling in the embodiment of the present application include at least one of radio resource control (Radio Resource Control, RRC) signaling and media access control element (Media Access Control Control Element, MAC CE) kind.
  • RRC Radio Resource Control
  • MAC CE Media Access Control Control Element
  • FIG. 4 it is a schematic flowchart of a method for reporting a random access condition provided by an embodiment of the present invention, and the method includes:
  • a terminal device sends a first preamble signal to a network device.
  • the terminal device sends the first PUSCH associated with the first preamble signal to the network device.
  • the above-mentioned first preamble signal is a preamble signal corresponding to a 2-step RACH process.
  • the above-mentioned first preamble signal is a preamble signal corresponding to a 4-step RACH process.
  • the foregoing first preamble may also be a corresponding preamble in other random access procedures.
  • the above-mentioned first preamble signal and the above-mentioned first PUSCH are carried in message A (ie, Message A) in the 2-step RACH process .
  • the terminal device sends Message A to the network device, including performing the above 401 and 402.
  • Message A consists of two parts, a preamble (ie, the first preamble signal) and a PUSCH resource block associated with the preamble (ie, the first PUSCH).
  • the terminal device triggers the 2-step RACH process
  • the selection and transmission of the preamble and PUSCH in message A can follow the existing method, but the random access condition information can be added in the PUSCH resource block, the random access condition information Information about the trigger conditions for the terminal device to initiate random access.
  • Random access condition information is carried in the first PUSCH, and the random access condition information is used to indicate the reason for triggering random access;
  • Random access condition information is carried in the first PUSCH, and the random access condition information is used to indicate the reason for triggering random access without distinguishing.
  • carrying random access condition information in the first PUSCH includes but is not limited to the following implementations:
  • Implementation mode 1 The random access condition information is carried in the medium access control MAC protocol data unit PDU.
  • the random access condition information may be indicated by bits in a new MAC control element CE in a MAC protocol data unit (Protocol Data Unit, PDU).
  • PDU Protocol Data Unit
  • the random access condition information may be indicated through the reserved bits in the existing MAC CE in the MAC PDU.
  • Implementation mode 2 Carry random access condition information in RRC signaling.
  • the first PUSCH indication does not distinguish the reason for triggering the random access.
  • the above reasons for triggering random access include but are not limited to at least one of the following reasons (A), (B), (C) and (D):
  • the terminal device transmits a small data packet (small data transmission, SDT) in an inactive state.
  • SDT small data transmission
  • the terminal device requests coverage enhancement (Coverage enhancement);
  • the terminal device is a reduced capability UE (reduced capability UE, Redcap UE);
  • the terminal device triggers at least one network slicing (Slicing) for random access.
  • the random access condition information includes a first indication field, and the value of the first indication field is used to indicate that the reason for triggering the random access is a target cause in at least one cause.
  • the value of the first indication field includes the first value and/or the second value
  • the first value is used to indicate that the reason for triggering the random access condition is a target cause in at least one cause
  • the second value is used for indicating that the reason for triggering the random access condition is not differentiated.
  • the random access condition information includes at least one bit; the number of bits of the at least one bit is determined according to the number of network slice groups and/or the number of network slices.
  • the random access condition information includes at least one bit; the value of the at least one bit includes: a first indication value and a second indication value;
  • the first indication value is used to indicate the reason
  • the second indication value is used to indicate that the reason for triggering the random access is not distinguished.
  • the random access condition information includes at least one bit; the value of the at least one bit includes: a first indication value and a second indication value;
  • the first indication value is used to indicate at least one network slice to which the terminal device triggers random access
  • the second indication value is used to indicate that the network slice triggering random cut-in is not distinguished from the terminal device
  • the number of bits of at least one bit is determined according to the number of network slice groups and/or the number of network slices.
  • the random access condition information may be indicated in different ways, including but not limited to the following implementation methods:
  • Mode 1 A reason for triggering random access is indicated by a first indication value of one bit
  • Mode 2 Indicating the cause of random access triggering without distinguishing through a first indication value of one bit.
  • the first indication value is 0, or the second indication value is 1, or the first indication value is 1, and the second indication value is 0.
  • one bit can be used to distinguish the reason, for example, one bit can be used for the above reasons (A), (B) and (C) instruct.
  • Mode 3 Instruct the terminal device to trigger at least one network slice for random access by using at least one bit;
  • Mode 4 Use at least one bit to indicate that the terminal device does not distinguish the network slice that triggers random access
  • At least one bit may be used for indication.
  • the number of bits of at least one bit can be determined according to the number of network slice groups, the number of bits of at least one bit can also be determined according to the number of network slices, and the number of bits of at least one bit can also be determined according to the number of network slice groups, and The number of network slices is determined.
  • Mode 5 Multiple reasons for triggering random access are indicated through corresponding multiple sets of bit information
  • Mode 6 Indicate multiple reasons for triggering random access without distinguishing through corresponding multiple sets of bit information
  • each group of bit information corresponds to a cause, and each group of bit information includes at least one bit.
  • the random access condition information is index information, and the index information corresponds to at least one cause.
  • the random access condition information can be indicated by independent encoding or joint encoding.
  • the independent encoding refers to the use of independent information Bits to indicate the trigger reason, corresponding to the above-mentioned mode 5 and mode 6.
  • the method of joint coding refers to other coding methods except independent coding, for example, using an index number to index a specific combination, which corresponds to the above-mentioned method 7.
  • the independent encoding method uses a bit, b bit and c bit to independently represent random access reasons A, B and C.
  • bit a when the value of bit a is 1, it indicates random access reason A; when the value of bit b is 1, it indicates random access reason B; when the value of bit c is 1, it indicates random access reason C.
  • Table 1 it is a specific indication manner of indicating random access condition information through an independent coding manner.
  • Random access condition information ⁇ bit a bit b bit c bit No need to distinguish 0 0 0 A 1 0 0 B 0 1 0
  • the way of joint encoding generally needs to encode the combination of reasons, and the corresponding index can be set for different random access condition information, as shown in Table 2, the last three types in Table 2 (ie A+C, B+C and A +B+C) combination, if you do not input a reasonable combination method, you don’t need to express it, and reserve it to facilitate subsequent expansion and save bits corresponding to unreasonable combination methods.
  • Random access condition information joint coding No need to distinguish 0 A 1 B 2 A+B 3 C 4 A+C reserve B+C reserve A+B+C reserve
  • the situation that does not need to be distinguished can be represented by at least one bit (code point), or can be represented by whether the random access condition information exists, that is, the random access condition information is not carried in the first PUSCH.
  • the network device sends a random access response message to the terminal device.
  • the above 403 may be a message B (ie, Message B) sent by the network device to the terminal device.
  • the present invention provides a method for reporting random access conditions.
  • a terminal device can send a first PUSCH to a network device; the first PUSCH carries random access condition information, and the random access condition information is used to indicate triggering random access at least one reason; wherein, the first PUSCH is associated with the first preamble signal.
  • the terminal device can carry the random access condition information in the first PUSCH associated with the first preamble, compared with indicating the random access condition through the preamble, without being limited by the range of the preamble, and does not need to Further division is made in the reserved preamble, which can reduce the probability of random access collisions.
  • an embodiment of the present invention provides a terminal device, including:
  • a sending module 501 configured to send a first physical uplink shared channel PUSCH to a network device
  • Random access condition information is carried in the first PUSCH, and the random access condition information is used to indicate a reason for triggering random access;
  • the first PUSCH is associated with the first preamble signal.
  • the random access condition information is also used to indicate that the reason for triggering the random access is not distinguished.
  • the first PUSCH indication does not distinguish the reason for triggering the random access.
  • the reasons for triggering random access include at least one of the following reasons:
  • the terminal device transmits small data packets in the inactive state
  • the terminal device requests coverage enhancement
  • the terminal equipment is a simplified terminal
  • the terminal device triggers random access to at least one network slice.
  • the random access condition information includes a first indication field, and the value of the first indication field is used to indicate that the reason for triggering the random access is a target cause in at least one cause.
  • the value of the first indication field includes the first value and/or the second value
  • the first value is used to indicate that the reason for triggering the random access condition is a target cause in at least one cause
  • the second value is used for indicating that the reason for triggering the random access condition is not differentiated.
  • the random access condition information includes at least one bit; the number of bits of the at least one bit is determined according to the number of network slice groups and/or the number of network slices.
  • the random access condition information includes at least one bit; the value of the at least one bit includes: a first indication value and a second indication value;
  • the first indication value is used to indicate the reason
  • the second indication value is used to indicate that the reason for triggering the random access is not distinguished.
  • the random access condition information includes at least one bit; the value of the at least one bit includes: a first indication value and a second indication value;
  • the first indication value is used to indicate the reason
  • the second indication value is used to indicate that the reason for triggering the random access is not distinguished.
  • the random access condition information includes at least one bit; the value of the at least one bit includes: a first indication value and a second indication value;
  • the first indication value is used to indicate at least one network slice to which the terminal device triggers random access
  • the second indication value is used to indicate that the network slice triggering random cut-in is not distinguished from the terminal device
  • the number of bits of at least one bit is determined according to the number of network slice groups and/or the number of network slices.
  • the random access condition information is index information, and the index information corresponds to at least one cause.
  • the random access condition information is carried in the RRC signaling.
  • the random access condition information is indicated through the reserved bits in the existing MAC CE in the MAC PDU.
  • the sending module 501 is also used for:
  • the first preamble signal is a preamble signal corresponding to a two-step random access procedure.
  • the first preamble signal and the first PUSCH are carried in message A in the two-step random access process.
  • an embodiment of the present invention provides a network device, including:
  • Random access condition information is carried in the first PUSCH, and the random access condition information is used to indicate a reason for triggering random access;
  • the first PUSCH is associated with the first preamble signal.
  • the random access condition information may also be used to indicate that the reason for triggering the random access is not distinguished.
  • the first PUSCH indication does not distinguish the reason for triggering the random access.
  • the reasons for triggering random access include at least one of the following reasons:
  • the terminal device transmits small data packets in the inactive state
  • the terminal device requests coverage enhancement
  • the terminal equipment is a simplified terminal
  • the terminal device triggers random access to at least one network slice.
  • the random access condition information includes a first indication field, and the value of the first indication field is used to indicate that the reason for triggering the random access is a target cause in at least one cause.
  • the value of the first indication field includes the first value and/or the second value
  • the first value is used to indicate that the reason for triggering the random access condition is a target cause in at least one cause
  • the second value is used for indicating that the reason for triggering the random access condition is not differentiated.
  • the random access condition information includes at least one bit; the number of bits of the at least one bit is determined according to the number of network slice groups and/or the number of network slices.
  • the random access condition information includes at least one bit; the value of the at least one bit includes: a first indication value and a second indication value;
  • the first indication value is used to indicate the reason
  • the second indication value is used to indicate that the reason for triggering the random access is not distinguished.
  • the random access condition information includes at least one bit; the value of the at least one bit includes: a first indication value and a second indication value;
  • the first indication value is used to indicate at least one network slice to which the terminal device triggers random access
  • the second indication value is used to indicate that the network slice triggering random cut-in is not distinguished from the terminal device
  • the number of bits of at least one bit is determined according to the number of network slice groups and/or the number of network slices.
  • the random access condition information is index information, and the index information corresponds to at least one cause.
  • the random access condition information is indicated by bits in the new MAC CE in the MAC PDU;
  • the random access condition information is indicated by the reserved bits in the existing MAC CE in the MAC PDU.
  • the random access condition information is carried in the RRC signaling.
  • the receiving module 601 is further configured to receive the first preamble signal sent by the terminal device.
  • the first preamble signal is a preamble signal corresponding to a two-step random access procedure.
  • the first preamble signal and the first PUSCH are carried in message A in the two-step random access process.
  • An embodiment of the present invention also provides a terminal device, including: a memory storing executable program codes;
  • a processor coupled to the memory
  • the processor invokes the executable program code stored in the memory to execute the method for reporting the random access condition performed by the terminal device in the embodiment of the present invention.
  • the embodiment of the present invention also provides a network device, including: a memory storing executable program codes;
  • a processor coupled to the memory
  • the processor invokes the executable program code stored in the memory to execute the method for reporting the random access condition performed by the network device in the embodiment of the present invention.
  • the network device in the embodiment of the present invention may be a base station, and the base station includes: a receiver 701, a transmitter 702, and a processor 703;
  • Random access condition information is carried in the first PUSCH, and the random access condition information is used to indicate at least one reason for triggering random access;
  • the first PUSCH is associated with the first preamble signal.
  • the random access condition information is used to indicate that the reason for triggering the random access is not distinguished.
  • the first PUSCH indication does not distinguish the reason for triggering the random access.
  • the reasons for triggering random access include at least one of the following reasons: the terminal device transmits small data packets in an inactive state;
  • the terminal device requests coverage enhancement
  • the terminal equipment is a simplified terminal
  • the terminal device triggers random access to at least one network slice.
  • the random access condition information includes a first indication field, and the value of the first indication field is used to indicate that the reason for triggering the random access is a target cause in at least one cause.
  • the value of the first indication field includes the first value and/or the second value
  • the first value is used to indicate that the reason for triggering the random access condition is a target cause in at least one cause
  • the second value is used for indicating that the reason for triggering the random access condition is not differentiated.
  • the random access condition information includes at least one bit; the number of bits of the at least one bit is determined according to the number of network slice groups and/or the number of network slices.
  • the random access condition information includes at least one bit; the value of the at least one bit includes: a first indication value and a second indication value;
  • the first indication value is used to indicate the reason
  • the second indication value is used to indicate that the reason for triggering the random access is not distinguished.
  • the random access condition information includes at least one bit; the value of the at least one bit includes: a first indication value and a second indication value;
  • the first indication value is used to indicate at least one network slice to which the terminal device triggers random access
  • the second indication value is used to indicate that the network slice triggering random cut-in is not distinguished from the terminal device
  • the number of bits of at least one bit is determined according to the number of network slice groups and/or the number of network slices.
  • the random access condition information is index information, and the index information corresponds to at least one cause.
  • the random access condition information is indicated by bits in the new MAC CE in the MAC PDU;
  • the random access condition information is indicated by the reserved bits in the existing MAC CE in the MAC PDU.
  • the random access condition information is carried in the RRC signaling.
  • the receiver 701 is further configured to receive the first preamble signal sent by the terminal device.
  • the first preamble signal is a preamble signal corresponding to a two-step random access procedure.
  • the first preamble signal and the first PUSCH are carried in message A in the two-step random access process.
  • FIG. 8 is a schematic diagram of a hardware structure of a terminal device provided by an embodiment of the present invention.
  • the terminal device may include: a radio frequency (radio frequency, RF) circuit 810, a memory 820, a processor 830 and other components.
  • the radio frequency circuit 810 includes a receiver 811 and a transmitter 812 .
  • RF radio frequency
  • the RF circuit 810 can be used for sending and receiving information or receiving and sending signals during a call. In particular, after receiving the downlink information from the base station, it is processed by the processor 830; in addition, the designed uplink data is sent to the base station.
  • the RF circuit 810 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (low noise amplifier, LNA), a duplexer, and the like.
  • RF circuitry 810 may also communicate with networks and other devices via wireless communications.
  • the above wireless communication can use any communication standard or protocol, including but not limited to global system of mobile communication (global system of mobile communication, GSM), general packet radio service (general packet radio service, GPRS), code division multiple access (code division multiple access) multiple access (CDMA), wideband code division multiple access (WCDMA), long term evolution (LTE), e-mail, short message service (short messaging service, SMS), etc.
  • GSM global system of mobile communication
  • GPRS general packet radio service
  • code division multiple access code division multiple access
  • WCDMA wideband code division multiple access
  • LTE long term evolution
  • e-mail short message service
  • SMS short message service
  • the memory 820 can be used to store software programs and modules, and the processor 830 executes various functional applications and data processing of the terminal device by running the software programs and modules stored in the memory 820 .
  • the memory 820 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application program required by a function (such as a sound playback function, an image playback function, etc.); Data created by the use of terminal equipment (such as audio data, phonebook, etc.), etc.
  • the memory 820 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage devices.
  • the processor 830 is the control center, connects various parts of the entire terminal equipment with various interfaces and lines, runs or executes software programs and/or modules stored in the memory 820, and invokes data stored in the memory 820 to execute Various functions and processing data of the terminal equipment, so as to monitor the terminal equipment as a whole.
  • the processor 830 may include one or more processing units; preferably, the processor 830 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface and application programs, etc. , the modem processor mainly handles wireless communications. It can be understood that the foregoing modem processor may not be integrated into the processor 830 .
  • the transmitter 812 is configured to send the first physical uplink shared channel PUSCH to the network device;
  • random access condition information is carried in the first PUSCH, the random access condition information is used to indicate at least one reason for triggering random access;
  • the first PUSCH is associated with the first preamble signal.
  • the random access condition information is also used to indicate that the reason for triggering the random access is not distinguished.
  • the first PUSCH indication does not distinguish the reason for triggering the random access.
  • the reasons for triggering random access include at least one of the following reasons:
  • the terminal device transmits small data packets in the inactive state
  • the terminal device requests coverage enhancement
  • the terminal equipment is a simplified terminal
  • the terminal device triggers random access to at least one network slice.
  • the random access condition information includes a first indication field, and the value of the first indication field is used to indicate that the reason for triggering the random access is a target cause in at least one cause.
  • the value of the first indication field includes the first value and/or the second value
  • the first value is used to indicate that the reason for triggering the random access condition is a target cause in at least one cause
  • the second value is used for indicating that the reason for triggering the random access condition is not differentiated.
  • the random access condition information includes at least one bit; the number of bits of the at least one bit is determined according to the number of network slice groups and/or the number of network slices.
  • the random access condition information includes at least one bit; the value of the at least one bit includes: a first indication value and a second indication value;
  • the first indication value is used to indicate the reason
  • the second indication value is used to indicate that the reason for triggering the random access is not distinguished.
  • the random access condition information includes at least one bit; the value of the at least one bit includes: a first indication value and a second indication value;
  • the first indication value is used to indicate at least one network slice to which the terminal device triggers random access
  • the second indication value is used to indicate that the network slice triggering random cut-in is not distinguished from the terminal device
  • the number of bits of at least one bit is determined according to the number of network slice groups and/or the number of network slices.
  • the random access condition information is index information, and the index information corresponds to at least one cause.
  • the random access condition information is carried in the medium access control MAC protocol data unit PDU;
  • the random access condition information is indicated by bits in the new MAC control element CE in the MAC PDU;
  • the random access condition information is indicated through the reserved bits in the existing MAC CE in the MAC PDU.
  • the random access condition information is carried in the RRC signaling.
  • the transmitter 812 is also used for:
  • the first preamble signal is a preamble signal corresponding to a two-step random access procedure.
  • the first preamble signal and the first PUSCH are carried in message A in the two-step random access process.
  • An embodiment of the present invention also provides a computer-readable storage medium, including: computer instructions, which, when run on a computer, cause a processor to execute various processes of the terminal device in the foregoing method embodiments.
  • An embodiment of the present invention also provides a computer-readable storage medium, including: computer instructions, which, when run on a computer, cause a processor to execute various processes of the network device in the foregoing method embodiments.
  • An embodiment of the present invention also provides a computer program product, including computer instructions.
  • the processor executes the computer instructions, so that the processor executes various processes of the terminal device in the above method embodiments.
  • the embodiment of the present invention also provides a computer program product, including computer instructions.
  • the processor executes the computer instructions, so that the processor executes various processes of the network device in the above method embodiments.
  • the embodiment of the present invention also provides a chip, the chip is coupled with the memory in the terminal device, so that the chip calls the program instructions stored in the memory during operation, so that the terminal device executes various processes of the terminal device in the above method embodiments.
  • the embodiment of the present invention also provides a chip, the chip is coupled with the memory in the network device, so that the chip calls the program instructions stored in the memory during operation, so that the network device executes various processes of the network device in the above method embodiments.
  • a computer program product includes one or more computer instructions.
  • Computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, e.g. Coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) to another website site, computer, server or data center.
  • DSL digital subscriber line
  • the computer-readable storage medium may be any available medium that can be stored by a computer, or a data storage device such as a server, a data center, etc. integrated with one or more available media.
  • Available media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)).

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

Abstract

Des modes de réalisation de la présente invention concernent un procédé de rapport de condition d'accès aléatoire, un dispositif terminal, et un dispositif de réseau, qui sont appliqués au domaine technique des communications. Les modes de réalisation de la présente invention comprennent l'étape suivante : envoi d'un premier canal partagé de liaison montante physique (PUSCH) à un dispositif de réseau, le premier PUSCH portant des informations de condition d'accès aléatoire, les informations de condition d'accès aléatoire étant utilisées pour indiquer une raison du déclenchement d'un accès aléatoire, le premier PUSCH étant associé à un premier signal de préambule.
PCT/CN2021/111024 2021-08-05 2021-08-05 Procédé de rapport d'état d'accès aléatoire, dispositif terminal, et dispositif de réseau WO2023010461A1 (fr)

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PCT/CN2021/111024 WO2023010461A1 (fr) 2021-08-05 2021-08-05 Procédé de rapport d'état d'accès aléatoire, dispositif terminal, et dispositif de réseau
CN202180097733.XA CN117223381A (zh) 2021-08-05 2021-08-05 随机接入条件的上报方法、终端设备及网络设备

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