WO2022246588A1 - Procédé de communication sans fil, équipement terminal et dispositif de réseau - Google Patents

Procédé de communication sans fil, équipement terminal et dispositif de réseau Download PDF

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Publication number
WO2022246588A1
WO2022246588A1 PCT/CN2021/095408 CN2021095408W WO2022246588A1 WO 2022246588 A1 WO2022246588 A1 WO 2022246588A1 CN 2021095408 W CN2021095408 W CN 2021095408W WO 2022246588 A1 WO2022246588 A1 WO 2022246588A1
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Prior art keywords
terminal device
rnti
message
random access
type
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PCT/CN2021/095408
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English (en)
Chinese (zh)
Inventor
贺传峰
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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/CN2021/095408 priority Critical patent/WO2022246588A1/fr
Priority to CN202180090566.6A priority patent/CN116803141A/zh
Publication of WO2022246588A1 publication Critical patent/WO2022246588A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information

Definitions

  • the embodiments of the present application relate to the communication field, and in particular to a wireless communication method, a terminal device, and a network device.
  • Reduced Capability (RedCap) terminals are introduced for scenarios with lower performance requirements such as delay, reliability, bandwidth, coverage, and throughput.
  • the capabilities of RedCap terminals are Reduced, for example, fewer receive antennas, less supported bandwidth, etc.
  • the network device sends downlink messages, such as message 2 (Msg2), message 4 (Msg4) or message B (MsgB), etc., to the terminal device through a public channel.
  • downlink messages such as message 2 (Msg2), message 4 (Msg4) or message B (MsgB), etc.
  • the present application provides a wireless communication method, terminal equipment, and network equipment, which are beneficial to improving downlink spectrum efficiency.
  • a wireless communication method including: a terminal device determines a first wireless network temporary identifier RNTI according to a random access preamble identifier RAPID of the terminal device; The first information sent during the access process.
  • a wireless communication method including: a terminal device determines a first wireless network temporary identifier RNTI according to first identification information, where the first identification information is associated with a type of the terminal device;
  • the first information sent by the network device during the random access process is received according to the first RNTI.
  • a wireless communication method including: a terminal device uses a first resource to receive first information sent by a network device during a random access process, where the first resource is the type of the terminal device corresponding resources.
  • a wireless communication method including: a network device determines a first wireless network temporary identifier RNTI according to a random access preamble identifier RAPID of a terminal device; sends a random access code to the terminal device according to the first RNTI The first message in the access process.
  • a wireless communication method including: a network device determines a first wireless network temporary identifier RNTI according to first identification information, wherein the first identification information is associated with a type of a terminal device; according to the first identification information An RNTI sends first information of a random access procedure to the terminal device.
  • a method for wireless communication including: a network device uses a first resource to send first information in a random access process to a terminal device, where the first resource corresponds to the type of the terminal device Resources.
  • a terminal device configured to execute the method in any one of the foregoing first to third aspects or in each implementation manner thereof.
  • the terminal device includes a functional module configured to execute any one of the above first aspect to the third aspect or the method in each implementation manner thereof.
  • a network device configured to execute the method in any one of the foregoing fourth to sixth aspects or in each implementation manner thereof.
  • the network device includes a functional module for executing any one of the fourth aspect to the sixth aspect or the method in each implementation manner thereof.
  • a ninth aspect provides a terminal device, including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute any one of the above first to third aspects or the methods in each implementation manner.
  • a network device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute any one of the fourth to sixth aspects or the method in each implementation manner.
  • a chip configured to implement any one of the above first to sixth aspects or the method in each implementation manner thereof.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the device executes any one of the above-mentioned first to sixth aspects or any of the implementations thereof. method.
  • a twelfth aspect provides a computer-readable storage medium for storing a computer program, and the computer program causes a computer to execute any one of the above-mentioned first to sixth aspects or the method in each implementation manner thereof.
  • a thirteenth aspect provides a computer program product, including computer program instructions, the computer program instructions cause a computer to execute any one of the above first to sixth aspects or the method in each implementation manner.
  • a computer program which, when running on a computer, causes the computer to execute any one of the above first to sixth aspects or the method in each implementation manner thereof.
  • the network device can optimize the transmission of the terminal device in the second step of the random access process, such as setting the transmission mode of the downlink channel according to the type of the terminal, such as the size of the scheduling resource, the modulation and coding scheme etc., which is beneficial to improve the downlink spectrum efficiency.
  • Fig. 1 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • Fig. 2 is a schematic flowchart of a random access process according to an embodiment of the present application.
  • Fig. 3 is a schematic flowchart of a random access process according to another embodiment of the present application.
  • Fig. 4 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of another wireless communication method provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of another wireless communication method provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of configuring different CORESETs for a reduced-capability terminal and a non-reduced-capability terminal.
  • Fig. 8 is a schematic diagram of configuring different downlink BWPs for a terminal with a reduced capability and a terminal with a non-reduced capability.
  • FIG. 9 is a schematic block diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 10 is a schematic block diagram of another terminal device provided by an embodiment of the present application.
  • Fig. 11 is a schematic block diagram of another terminal device provided by an embodiment of the present application.
  • Fig. 12 is a schematic block diagram of a terminal device provided by an embodiment of the present application.
  • Fig. 13 is a schematic block diagram of another terminal device provided by an embodiment of the present application.
  • FIG. 14 is a schematic block diagram of another terminal device provided by an embodiment of the present application.
  • Fig. 15 is a schematic block diagram of a communication device provided by another embodiment of the present application.
  • Fig. 16 is a schematic block diagram of a chip provided by an embodiment of the present application.
  • Fig. 17 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • 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) deployment Web scene.
  • Carrier Aggregation, CA Carrier Aggregation
  • DC Dual Connectivity
  • SA independent deployment Web scene
  • 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 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 (STATION, ST) in a 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 assistant (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.
  • PLMN Public Land Mobile Network
  • 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 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
  • the communication system 100 may include a network device 110, and the network device 110 may be a device for communicating with a terminal device 120 (or called a communication terminal, terminal).
  • the network device 110 can provide communication coverage for a specific geographical area, and can communicate with terminal devices located in the coverage area.
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This application The embodiment does not limit this.
  • the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which is not limited in this embodiment of the present application.
  • a device with a communication function in the network/system in the embodiment of the present application may be referred to as a communication device.
  • the communication equipment may include a network equipment 110 and a terminal equipment 120 with communication functions.
  • the network equipment 110 and the terminal equipment 120 may be the specific equipment described above, and will not be repeated here.
  • the communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities and other network entities, which are not limited in this embodiment of the present application.
  • 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.
  • predefinition can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate related information in devices (for example, including terminal devices and network devices).
  • the implementation method is not limited.
  • pre-defined may refer to defined in the protocol.
  • the "protocol” may refer to a standard protocol in the communication field, for example, it may include the LTE protocol, the NR protocol, and related protocols applied in future communication systems, which is not limited in the present application.
  • the four-step random access includes the following steps:
  • Step 1 the terminal device sends a physical random access channel (Physical Random Access Channel, PRACH) to the network device, where the PRACH includes a random access preamble (Preamble, that is, Msg 1).
  • PRACH Physical Random Access Channel
  • the random access preamble may also be referred to as a preamble, a random access preamble sequence, a preamble sequence, and the like.
  • the terminal device may select a PRACH resource, and send the Preamble on the PRACH resource.
  • the network device sends random access related parameters to the terminal device through the broadcast System Information Block (SIB) 1, such as Reference Signal Receiving Power (Reference Signal Receiving Power) for Synchronization Signal Block (SSB) selection, RSRP) threshold (rsrp-ThresholdSSB).
  • SIB System Information Block
  • SSB Reference Signal Receiving Power
  • RSRP Synchronization Signal Block
  • rsrp-ThresholdSSB rsrp-ThresholdSSB
  • Each SSB corresponds to a group of Preamble and random access opportunity (RACH Occasion, RO) resources, and the terminal device can select a Preamble for random access in a group of Preambles corresponding to the selected SSB.
  • the network device can estimate the transmission delay between itself and the terminal device according to the Preamble and use this to calibrate the uplink timing (timing), and can generally determine the
  • Step 2 the network device sends a random access response (Random Access Response, RAR, that is, Msg 2) to the terminal device.
  • RAR Random Access Response
  • the RAR is used to inform the terminal device of the Physical Uplink Shared Channel (PUSCH) resources that can be used when sending the message 3 (ie Msg3), and assign a temporary Radio Network Temporary Identity (RNTI) to the terminal device ), providing timing advance command (Timing Advance Command, TAC) etc. for the terminal equipment.
  • PUSCH Physical Uplink Shared Channel
  • RNTI Radio Network Temporary Identity
  • TAC Timing Advance Command
  • the terminal device after the terminal device sends the Preamble to the network device, it can open a random access response window (ra-ResponseWindow), and in the ra-ResponseWindow, according to the Random Access Radio Network Temporary Identifier (Random Access Radio Network Temporary Identifier, RA- RNTI) detects the corresponding Physical Downlink Control Channel (PDCCH). If the terminal device detects the PDCCH scrambled by the RA-RNTI, it can obtain the Physical Downlink Shared Channel (PDSCH) scheduled by the PDCCH. Wherein, the PDSCH includes the RAR corresponding to the Preamble.
  • ra-ResponseWindow Random Access Radio Network Temporary Identifier
  • RA- RNTI Random Access Radio Network Temporary Identifier
  • the terminal device detects the PDCCH scrambled by the RA-RNTI, it can obtain the Physical Downlink Shared Channel (PDSCH) scheduled by the PDCCH.
  • RA-RNTI is calculated based on the time-frequency position of the PRACH that sends the Preamble, so if multiple terminal devices send the Preamble on the same RO, the corresponding RARs are multiplexed in the same RAR Media Access Control Protocol Data Unit (Media Access Control Protocol Data Unit (MAC) Protocol Data Unit, MAC PDU).
  • Media Access Control Protocol Data Unit Media Access Control Protocol Data Unit (MAC) Protocol Data Unit, MAC PDU).
  • the terminal successfully receives the PDCCH scrambled by the RA-RNTI corresponding to the RO resource that sent the Preamble, and the RAR contains a random access sequence identifier (Random Access Preamble Identifier, RAPID) carried by a MAC sub-PDU (subPDU) and the above If the index (preamble index) of the random access preamble selected in Msg 1 corresponds, the RAR is successfully received, and the terminal can decode to obtain TAC, uplink authorization resource (UL Grant) and temporary cell RNTI (Temporary Cell Radio Network Temporary Identity, TC) -RNTI), so as to transmit Msg 3.
  • RAPID Random Access Preamble Identifier
  • Step 3 the terminal device sends Msg 3.
  • the terminal device may send the Msg3 on the PUSCH resource specified in the RAR, where Msg3 includes the temporary identification information of the terminal device.
  • Msg 3 may include an RRC connection request message (RRC Setup Request) generated by the RRC layer.
  • RRC Setup Request RRC Setup Request
  • Msg 3 may carry, for example, the 5G-Serving Temporary Mobile Subscriber Identity (Serving-Temporary Mobile Subscriber Identity, S-TMSI) or random number of the terminal device.
  • S-TMSI Serving-Temporary Mobile Subscriber Identity
  • Msg 3 may include an RRC connection reestablishment request message (RRC Reestabilshment Request) generated by the RRC layer.
  • RRC Reestabilshment Request RRC connection reestablishment request message
  • Msg 3 carries, for example, a Cell Radio Network Temporary Identifier (C-RNTI) and the like.
  • C-RNTI Cell Radio Network Temporary Identifier
  • Msg 3 may include an RRC handover confirmation message (RRC Handover Confirm) generated by the RRC layer, which carries the C-RNTI of the terminal device.
  • RRC Handover Confirm RRC handover confirmation message
  • Msg 3 carries information such as a buffer status report (Buffer Status Report, BSR).
  • BSR Buffer Status Report
  • Msg 3 may at least include the C-RNTI of the terminal device.
  • Step 4 the network device sends a contention resolution message (contention resolution), namely Msg 4, to the terminal device.
  • a contention resolution message contention resolution
  • the network device sends Msg 4 to the terminal device, and the terminal device correctly receives Msg 4 to complete contention resolution.
  • Msg 4 may carry the RRC connection establishment message.
  • the network device Since the terminal device in step 3 can carry the unique identifier of the terminal device in Msg3, the network device will carry the unique identifier of the terminal device in Msg4 in the competition resolution mechanism to designate the winning terminal device in the competition. However, other terminal devices that do not win the contention resolution will re-initiate random access.
  • two-step random access may include the following steps:
  • Step 1 the terminal device sends MsgA to the network, and MsgA is used to transmit Msg1+Msg3 of four-step random access;
  • Step 2 the network sends MsgB to the terminal device, and MsgB is used to transmit Msg2+Msg4 of four-step random access.
  • the terminal device After sending MsgA, the terminal device opens a receiving window of MsgB, and monitors and receives MsgB in the receiving window.
  • the terminal device After sending the Msg1, the terminal device will monitor the PDCCH within the RAR time window to receive the corresponding RAR.
  • the cyclic redundancy check (Cyclical Redundancy Check, CRC) of the PDCCH is scrambled through the RA-RNTI. If no RAR reply from the network device is received within the RAR time window, it is considered that the random access process has failed.
  • the terminal device successfully receives a RAR and the index (preamble index) of the random access preamble in the RAR is the same as the preamble index sent by the UE, it is considered that the RAR has been successfully received, and the UE can stop listening to the RAR at this time up.
  • a RAR can contain the response information of the network device to multiple terminal devices sending preamble, and the response information of the network device to each terminal device can include the RAPID used by the terminal device, resource allocation information of Msg3, TA adjustment information, TC- RNTI and other information.
  • the terminal device needs to use RA-RNTI to determine whether the received RAR is sent to itself. Therefore, the generation method of RA-RNTI is stipulated as follows:
  • RA-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id
  • the NR system is mainly designed to support Enhance Mobile Broadband (eMBB) services.
  • eMBB Enhance Mobile Broadband
  • the main technology of the NR system is to meet the needs of high speed, high spectral efficiency, and large bandwidth.
  • eMBB services there are many different types of services, such as sensor networks, video surveillance, and wearable services. These services have different requirements from eMBB services in terms of speed, bandwidth, power consumption, and cost. .
  • the capabilities of terminal devices supporting these services are lower than those supporting eMBB services, for example, the supported bandwidth is reduced, the processing time is relaxed, the number of antennas is reduced, and the maximum modulation order is relaxed.
  • This type of terminal may be called a Reduced Capability (Reduced Capability, RedCap) terminal. Therefore, NR systems need to be optimized for these services and the reduced capability terminals supporting these services.
  • RedCap terminals cannot let network devices know their own terminal types or capabilities during the initial access phase. Compared with non-RedCap terminals, RedCap terminals have reduced receiving performance on downlink channels due to the reduction in the number of receiving antennas.
  • the network device sends Msg2 and Msg4 to the terminal device through the public channel. Since the type of the terminal is not known, a conservative approach is to set the transmission mode of the downlink channel on the network device according to the number of receiving antennas of the RedCap terminal. Such as scheduling resource size, modulation and coding scheme, etc., which will reduce downlink spectrum efficiency.
  • the RedCap terminal reports its own type or capability, so that the network device can adopt a corresponding downlink channel transmission mode.
  • the RedCap terminal can indicate the type or capability of the terminal through the Msg1, so that the network device can perform corresponding optimization for the RedCap terminal device when sending the Msg2.
  • Msg1 indicates the type or capability of the terminal, including distinguishing RedCap terminals from non-RedCap terminals through at least one of preamble index, initial uplink bandwidth part (Band Width Part, BWP) and PRACH resources.
  • network equipment can identify the access of RedCap terminals earlier, and can optimize the transmission of RedCap terminals earlier to improve transmission efficiency.
  • the RedCap terminal and the non-RedCap terminal can use the shared RO, the time domain and the frequency domain of the PRACH resource where the two transmit the Preamble are the same.
  • the RA-RNTI determined according to the calculation method of the above RA-RNTI is the same, therefore, even if the RedCap terminal and the non-RedCap terminal use different preambles, they cannot be distinguished. That is to say, when the network device sends RAR, for the same RA-RNTI, the PDCCH that schedules RAR transmission and the PDSCH that carries RAR may carry the response information of RedCap terminals and non-RedCap terminals at the same time. Transmission optimization based on terminal type.
  • this application provides a technical solution, by designing and generating RA-RNTI according to the identification information related to the type or capability of the terminal device, it can ensure that the network device transmits responses corresponding to different types of terminals through different RA-RNTIs Information, so as to ensure that the second step in the random access process can be optimized for different types of terminals, and the downlink spectrum efficiency is improved.
  • FIG. 4 is a schematic interaction diagram of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG. 4, the method 200 includes at least part of the following content:
  • the network device determines the first wireless network temporary identifier RNTI according to the random access preamble identifier RAPID of the terminal device;
  • the terminal device determines the first RNTI according to the RAPID of the terminal device.
  • the network device sends first information scrambled by the first RNTI, where the first information is downlink information in a random access process.
  • the terminal device receives the first information sent by the network device according to the first RNTI.
  • the terminal device may execute S211 after sending Msg1, and the network device may execute S201 after receiving Msg1, but this embodiment of the present application does not limit the execution sequence of S201 and S211.
  • the RAPID is an index of a random access preamble, or Preamble Index.
  • the network device before the network device sends the first information, the network device already knows the type or capability of the terminal device.
  • the terminal device may indicate the type or capability of the terminal device to the network device through a first message, where the first message is the first message in a random access procedure.
  • the terminal device may indicate the type or capability of the terminal device by using at least one of the random access preamble, the initial uplink BWP for sending the first message, and the PRACH resource for sending the first message.
  • the first information may be downlink information in a four-step random access process, such as Msg2, or downlink information in a two-step random access process, such as MsgB.
  • the first information is scrambled by a first RNTI.
  • the first information includes information scrambled by the first RNTI, for example, the CRC of the first information is scrambled by the first RNTI.
  • the first RNTI is used to scramble the PDCCH carrying the RAR in the four-step random access process.
  • the first RNTI is used to scramble the CRC of the PDCCH carrying the RAR.
  • the first RNTI may be an RA-RNTI.
  • the first information may include a PDCCH for scheduling the RAR and/or a PDSCH for carrying the RAR.
  • the terminal device can detect the PDCCH sent by the network device according to the RA-RNTI, and if the terminal device detects the PDCCH scrambled by the RA-RNTI, it can receive the PDSCH scheduled by the PDCCH according to the PDCCH, so as to Obtain the RAR corresponding to the Preamble included in the PDSCH.
  • the first RNTI is used to scramble the PDCCH carrying the RAR in the two-step random access process. More specifically, the first RNTI is used to scramble the CRC of the PDCCH carrying the RAR. In this case, the first RNTI is MSGB-RNTI.
  • the first information includes MsgB, where the MsgB includes a PDCCH for scheduling RAR and a PDSCH for carrying RAR.
  • the RAPID of the terminal device may be configured according to the type or capability of the terminal device.
  • the network device may configure a corresponding Preamble set according to the type or capability of the terminal device, that is, terminals of different types or capabilities may use Preambles in different Preamble sets to send the PRACH.
  • the type of the terminal device may include two types, such as a reduced capability terminal and a non-reduced capability terminal, or may include more types, for example, a reduced capability terminal, a normal terminal and an enhanced capability terminal Etc., wherein, the capability of the enhanced capability terminal is higher than that of the normal terminal, and the capability of the normal terminal is higher than that of the reduced capability terminal, or the reduced capability terminal can also be divided into multiple types, for example, according to the receiving antenna of the terminal device The number will divide the terminal with reduced capability into multiple types, and this application does not limit the way of dividing the types of terminal equipment.
  • two types of terminals that is, a terminal with reduced capability and a terminal without reduced capability
  • the type of the terminal device may be classified according to the capability of the terminal device.
  • the capability of the terminal device may include but not limited to at least one of the following: supported bandwidth, data processing capability, Maximum modulation order, number of receiving antennas, receiving antenna gain and coverage level.
  • the network device may configure a first Preamble set for a terminal with a reduced capability, and configure a second Preamble set for a terminal with a non-reduced capability, where the Preambles included in the first Preamble set and the second Preamble set do not overlap.
  • the terminal device receives first configuration information sent by the network device, the first configuration information is used to configure a first Preamble set, and the first Preamble set includes at least one RAPID, so the first Preamble set is also called is a first RAPID set, and the first Preamble set corresponds to the type to which the terminal device belongs, for example, a terminal type with reduced capability.
  • the reduced capability terminal and the non-reduced capability terminal share RO resources. That is, the terminal with reduced capability and the terminal without reduced capability can use the same RO resource to send the Preamble.
  • the terminal device may determine the first RNTI according to the information of the PRACH resource where the Preamble is located and the RAPID of the terminal device. Since different types of terminals are configured with different RAPIDs, even if the reduced capability terminal and the non-reduced capability terminal share RO resources, by calculating the first RNTI according to the PRACH resource information and RAPID, different types of terminals can be distinguished through the first RNTI .
  • the network device can know the RAPID of the terminal device and the PRACH resource used by the terminal device to send the Preamble, and the terminal device can also know its own RAPID and the PRACH resource used to send the Preamble, then the network device can Calculate the first RNTI according to the PRACH resource information used by the terminal device to send the Preamble and the RAPID corresponding to the Preamble sent by the terminal device, and further send the first information according to the first RNTI.
  • the terminal device can also send the Preamble according to the The information of the PRACH resource and the RAPID corresponding to the Preabmle sent by the terminal device calculate the first RNTI, and further receive the first information according to the first RNTI.
  • the network device can distinguish the first information of different types of terminals through different first RNTIs, so that the network device can adopt corresponding downlink channel transmission methods according to different types of terminals, for example Modulation and coding scheme, scheduling resource size, etc.
  • the information of the PRACH resource where the Preamble is located includes at least one of the following:
  • the reduced-capability terminal and the non-reduced-capability terminal may determine the first RNTI according to the RAPID and the information of the PRACH resource for sending the Preamble, where different types of terminals correspond to different RAPIDs, and different types of The first RNTI corresponding to the terminal is also different.
  • the terminal with reduced capability determines the first RNTI according to the RAPID and the information of the PRACH resource for sending the Preamble
  • the terminal with the reduced capability determines the first RNTI according to the information of the PRACH resource for sending the Preamble.
  • the terminal with reduced capability determines the first RNTI according to the information of the PRACH resource for sending the Preamble, and the terminal with the reduced capability determines the first RNTI according to the information of the RAPID and the PRACH resource for sending the Preamble. In this way, even if the The capability terminal and the non-reduced capability terminal use the shared RO resources, and the calculated first RNTI is also different.
  • the first RNTI is the RA-RNTI and the MSGB-RNTI
  • the manner of determining the first RNTI will be described respectively.
  • Case 1 The first RNTI is RA-RNTI
  • the terminal device calculates the RA-RNTI according to the following formula (1):
  • RA-RNTI 1+RAPID+64 ⁇ s_id+64 ⁇ 14 ⁇ t_id+64 ⁇ 14 ⁇ 80 ⁇ f_id+64 ⁇ 14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id
  • RAPID is the index of the Preamble
  • s_id is the index of the first OFDM symbol occupied by the PRACH resource, 0 ⁇ s_id ⁇ 14
  • t_id is the index of the first slot occupied by the PRACH resource, 0 ⁇ t_id ⁇ 80
  • f_id is the index of the PRACH resource in the frequency domain, 0 ⁇ f_id ⁇ 8
  • ul_carrier_id is the uplink carrier (UL carrier) where the PRACH resource is located.
  • the terminal device calculates the RA-RNTI according to the following formula (2):
  • RA-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id+14 ⁇ 80 ⁇ 8 ⁇ 2 ⁇ RAPID Formula (2)
  • RAPID is the index of the Preamble
  • s_id is the index of the first OFDM symbol occupied by the PRACH resource, 0 ⁇ s_id ⁇ 14
  • t_id is the index of the first slot occupied by the PRACH resource, 0 ⁇ t_id ⁇ 80
  • f_id is the index of the PRACH resource in the frequency domain, 0 ⁇ f_id ⁇ 8
  • ul_carrier_id is the UL carrier where the PRACH resource is located.
  • the terminal device calculates the RA-RNTI according to the following formula (3):
  • RAPID-RedCap is the index of the Preamble used by the RedCap terminal
  • RedCap-TotalNumberOfRA-Preambles indicates the maximum number of Preambles used for random access of the terminal with reduced capability
  • s_id is the number of the first OFDM symbol occupied by the PRACH resource index, 0 ⁇ s_id ⁇ 14
  • t_id is the index of the first slot occupied by the PRACH resource, 0 ⁇ t_id ⁇ 80
  • f_id is the index of the PRACH resource in the frequency domain, 0 ⁇ f_id ⁇ 8
  • ul_carrier_id is the location of the PRACH resource Uplink carrier (UL carrier).
  • UL carrier Uplink carrier
  • RedCap-TotalNumberOfRA-Preambles may be configured through a higher layer parameter (RedCap-TotalNumberOfRA-Preambles).
  • the Preamble in the Preamble set configured for the RedCap terminal can be numbered, the RAPID-RedCap can be the number of the Preamble, and the value of the RAPID-RedCap can be 1, 2, ..., RedCap-TotalNumberOfRA- Preambles.
  • the value of RedCap-TotalNumberOfRA-Preambles may be 64, that is, the maximum number of Preambles used for random access of a terminal with reduced capabilities is 64, and RAPID-RedCap may include 64 values.
  • the terminal device calculates the MSGB-RNTI according to the following formula (4):
  • RA-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id+14 ⁇ 80 ⁇ 8 ⁇ 2 ⁇ RAPID-RedCap Formula (4)
  • RAPID-RedCap is the index of the Preamble used by the RedCap terminal
  • s_id is the index of the first OFDM symbol occupied by the PRACH resource, 0 ⁇ s_id ⁇ 14
  • t_id is the index of the first slot occupied by the PRACH resource, 0 ⁇ t_id ⁇ 80
  • f_id is the index of the PRACH resource in the frequency domain, 0 ⁇ f_id ⁇ 8
  • ul_carrier_id is the UL carrier where the PRACH resource is located.
  • RAPID-RedCap refers to the related implementation of the third method, for the sake of brevity, it will not be repeated here.
  • the terminal device calculates the RA-RNTI according to the following formula (5):
  • RA-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id Formula (5)
  • the reduced capability terminal and the non-reduced capability terminal may calculate the RA-RNTI according to formula (1). Since different types of terminals correspond to different RAPIDs, the RA-RNTI calculated according to the formula (1) is also different.
  • the reduced capability terminal and the non-reduced capability terminal may calculate the RA-RNTI according to formula (2). Since different types of terminals correspond to different RAPIDs, the RA-RNTI calculated according to the formula (2) is also different.
  • the reduced capability terminal may calculate the RA-RNTI according to formula (1), and the non-reduced capability terminal may calculate the RA-RNTI according to formula (5).
  • the non-capability-reduced terminal may calculate the RA-RNTI according to formula (1), and the reduced-capability terminal may calculate the RA-RNTI according to formula (5).
  • the value of RAPID used to calculate the RA-RNTI is not zero.
  • the reduced capability terminal may calculate the RA-RNTI according to formula (2), and the non-reduced capability terminal may calculate the RA-RNTI according to formula (5).
  • the non-capability-reduced terminal may calculate the RA-RNTI according to formula (2), and the reduced-capability terminal may calculate the RA-RNTI according to formula (5).
  • the value of RAPID used to calculate the RA-RNTI is not zero.
  • the reduced capability terminal may calculate the RA-RNTI according to formula (3), and the non-reduced capability terminal may calculate the RA-RNTI according to formula (5).
  • a non-reduced capability terminal can calculate RA-RNTI according to formula (3), and a reduced capability terminal can calculate RA-RNTI according to formula (5).
  • TotalNumberOfRA-Preambles needs to be replaced with the maximum number of Preambles used for random access by non-reduced capability terminals.
  • the reduced capability terminal may calculate the RA-RNTI according to formula (4), and the non-reduced capability terminal may calculate the RA-RNTI according to formula (5).
  • the non-reduced capability terminal can calculate RA-RNTI according to formula (4), and the reduced capability terminal can calculate RA-RNTI according to formula (5).
  • RAPID-RedCap needs to be replaced with the RAPID of the non-reduced capability terminal.
  • the value of RAPID used to calculate the RA-RNTI is not zero.
  • the terminal device calculates the MSGB-RNTI according to the following formula (6):
  • MSGB-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id+14 ⁇ 80 ⁇ 8 ⁇ 2 ⁇ RAPID Formula (6)
  • RAPID is the index of the Preamble
  • s_id is the index of the first OFDM symbol occupied by the PRACH resource, 0 ⁇ s_id ⁇ 14
  • t_id is the index of the first slot occupied by the PRACH resource, 0 ⁇ t_id ⁇ 80
  • f_id is the index of the PRACH resource in the frequency domain, 0 ⁇ f_id ⁇ 8
  • ul_carrier_id is the UL carrier where the PRACH resource is located.
  • the terminal device calculates the MSGB-RNTI according to the following formula (7):
  • MSGB-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id+14 ⁇ 80 ⁇ 8 ⁇ 2 ⁇ RAPID-RedCap Formula (7)
  • RAPID-RedCap is the index of the Preamble used by the RedCap terminal
  • s_id is the index of the first OFDM symbol occupied by the PRACH resource, 0 ⁇ s_id ⁇ 14
  • t_id is the index of the first slot occupied by the PRACH resource, 0 ⁇ t_id ⁇ 80
  • f_id is the index of the PRACH resource in the frequency domain, 0 ⁇ f_id ⁇ 8
  • ul_carrier_id is the UL carrier where the PRACH resource is located.
  • RAPID-RedCap refers to the related implementation of the third method, for the sake of brevity, it will not be repeated here.
  • the terminal device calculates the MSGB-RNTI according to the following formula (8):
  • MSGB-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id+14 ⁇ 80 ⁇ 8 ⁇ 2 formula (8)
  • the reduced capability terminal and the non-reduced capability terminal can calculate MSGB-RNTI according to formula (6). Since different types of terminals correspond to different RAPIDs, the MSGB-RNTI calculated according to formula (6) is also different.
  • the reduced capability terminal may calculate RA-RNTI according to formula (6), and the non-reduced capability terminal may calculate MSGB-RNTI according to formula (8).
  • the non-reduced capability terminal may calculate the MSGB-RNTI according to formula (8), and the reduced capability terminal may calculate the RA-RNTI according to formula (6).
  • the value of RAPID used to calculate the MSGB-RNTI is not 1.
  • the reduced capability terminal and the non-reduced capability terminal can calculate MSGB-RNTI according to formula (7). Since different types of terminals correspond to different RAPIDs, the MSGB-RNTI calculated according to formula (7) is also different.
  • the reduced capability terminal may calculate RA-RNTI according to formula (7), and the non-reduced capability terminal may calculate MSGB-RNTI according to formula (8).
  • the non-reduced capability terminal can calculate MSGB-RNTI according to formula (8), and the reduced capability terminal can calculate RA-RNTI according to formula (7).
  • RAPID-RedCap needs to be replaced with the RAPID of the non-reduced capability terminal.
  • the value of RAPID used to calculate the MSGB-RNTI is not 1.
  • the first RNTI corresponding to the first information is generated according to the RAPID of the terminal device, and at the same time, because the network device configures different RAPIDs for different types of terminal devices, it can ensure that the network device passes Different first RNTIs carry the first information of different types of terminal devices, so that the second step of the network device in the random access process can optimize the transmission of different types of terminal devices, for example, set the downlink according to the type of terminal Channel transmission methods, such as scheduling resource size, modulation and coding scheme, etc., are conducive to improving downlink spectrum efficiency.
  • FIG. 5 is a schematic interaction diagram of a wireless communication method 300 according to an embodiment of the present application. As shown in FIG. 5, the method 300 includes at least part of the following content:
  • the network device determines the first wireless network temporary identifier RNTI according to the first identification information
  • the terminal device determines the first radio network temporary identifier RNTI according to the first identification information
  • the network device sends first information scrambled by the first RNTI, where the first information is downlink information in a random access process.
  • the terminal device receives the first information sent by the network device according to the first RNTI.
  • the terminal device may execute S311 after sending Msg1, and the network device may execute S301 after receiving Msg1, but this embodiment of the present application does not limit the execution order of S301 and S311.
  • the RAPID is an index of a random access preamble, or Preamble Index.
  • the network device before the network device sends the first information, the network device already knows the type or capability of the terminal device.
  • the terminal device may indicate the type or capability of the terminal device to the network device through a first message, where the first message is the first message in a random access procedure.
  • the terminal device may indicate the type of the terminal device by using a random access preamble, an initial uplink BWP for sending the first message, and at least one item of PRACH resources for sending the first message.
  • different types of terminal equipment may use different random access preambles to indicate the type of the terminal equipment to the network equipment.
  • different types of terminal devices may indicate the type of the terminal device to the network device by using different initial uplink BWPs to send random access preambles.
  • different types of terminal devices may send a random access preamble to indicate the type of the terminal device to the network device through different PRACH resources (such as time domain resources, frequency domain resources, or code domain resources, etc.).
  • PRACH resources such as time domain resources, frequency domain resources, or code domain resources, etc.
  • the first information may be downlink information in a four-step random access process, such as Msg2, or downlink information in a two-step random access process, such as MsgB.
  • the first information is scrambled by the first RNTI.
  • the first information includes information scrambled by the first RNTI.
  • the CRC of the first information is scrambled by the first RNTI.
  • the first RNTI is used to scramble the PDCCH carrying the RAR in the four-step random access process.
  • the first RNTI is used to scramble the CRC of the PDCCH carrying the RAR.
  • the first RNTI may be an RA-RNTI.
  • the first information may include a PDCCH for scheduling the RAR and/or a PDSCH for carrying the RAR.
  • the terminal device can detect the PDCCH sent by the network device according to the RA-RNTI, and if the terminal device detects the PDCCH scrambled by the RA-RNTI, it can receive the PDSCH scheduled by the PDCCH according to the PDCCH, so as to Obtain the RAR corresponding to the Preamble included in the PDSCH.
  • the first RNTI is used to scramble the PDCCH carrying the RAR in the two-step random access process. More specifically, the first RNTI is used to scramble the CRC of the PDCCH carrying the RAR. In this case, the first RNTI is MSGB-RNTI.
  • the first information includes MsgB, where the MsgB includes a PDCCH for scheduling RAR and a PDSCH for carrying RAR.
  • the RAPID of the terminal device may be configured according to the type or capability of the terminal device.
  • the network device may configure a corresponding Preamble set according to the type or capability of the terminal device, that is, terminals of different types or capabilities may use Preambles in different Preamble sets to send the PRACH.
  • the type of the terminal device may include two types, such as a reduced capability terminal and a non-reduced capability terminal, or may include more types, for example, a reduced capability terminal, a normal terminal and an enhanced capability terminal Etc., wherein, the capability of the enhanced capability terminal is higher than that of the normal terminal, and the capability of the normal terminal is higher than that of the reduced capability terminal, or the reduced capability terminal can also be divided into multiple types, for example, according to the receiving antenna of the terminal device The number will divide the terminal with reduced capability into multiple types, and this application does not limit the way of dividing the types of terminal equipment.
  • two types of terminals that is, a terminal with reduced capability and a terminal without reduced capability
  • the type of the terminal device may be classified according to the capability of the terminal device.
  • the capability of the terminal device may include but not limited to at least one of the following: supported bandwidth, data processing capability, Maximum modulation order, number of receiving antennas, receiving antenna gain and coverage level.
  • the network device may configure a first Preamble set for a terminal with a reduced capability, and configure a second Preamble set for a terminal with a non-reduced capability, where the Preambles included in the first Preamble set and the second Preamble set do not overlap.
  • the terminal device receives first configuration information sent by the network device, the first configuration information is used to configure a first Preamble set, and the first Preamble set includes at least one RAPID, so the first Preamble set is also called is a first RAPID set, and the first Preamble set corresponds to the type to which the terminal device belongs, for example, a terminal type with reduced capability.
  • association between the first identification information and the type of the terminal device may mean that different types of terminals correspond to different first identification information, that is, different types of terminals can be distinguished through the first identification information, and the first identification information It may refer to any identification information used to distinguish different types of terminals, which is not limited in this application.
  • the first identification information is the RAPID of the terminal device
  • the RAPID of the terminal device can be configured according to the type or capability of the terminal device.
  • the type or capability of the terminal device can be distinguished according to the RAPID of the terminal device, so the first identification information can be passed through the RAPID of the terminal device.
  • RAPID implementation
  • the specific implementation of determining the first RNTI according to the RAPID of the terminal device may refer to related implementations of manners 1 to 6 in the method 200, and details are not repeated here for brevity.
  • the first identification information is the identification information of the Preamble set of the terminal device.
  • the Preamble set of the terminal device is configured according to the type or capability of the terminal device, therefore, terminals of different types or capabilities can be distinguished according to the identification information of the Preamble set.
  • terminals of the same type or capability can be configured with the same Preamble set, so that for terminals of the same type or capability, the network device can use the same first RNTI to transmit the first information of the terminal of this type or capability , which is beneficial to avoid resource waste caused by using different RNTIs to transmit the first information of terminals of the same type or capability but using different Preambles.
  • the first RNTI is the RA-RNTI and the MSGB-RNTI
  • the manner of determining the first RNTI will be described respectively.
  • Case 1 the first RNTI is RA-RNTI
  • the terminal device calculates the RA-RNTI according to the following formula (9):
  • RA-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id+14 ⁇ 80 ⁇ 8 ⁇ 2 ⁇ P formula (9)
  • P is the identification information of the Preamble set
  • s_id is the index of the first OFDM symbol occupied by the PRACH resource, 0 ⁇ s_id ⁇ 14
  • t_id is the index of the first slot occupied by the PRACH resource, 0 ⁇ t_id ⁇ 80
  • f_id is the index of the PRACH resource in the frequency domain, 0 ⁇ f_id ⁇ 8
  • ul_carrier_id is the UL carrier where the PRACH resource is located.
  • the multiple Preamble sets may correspond to multiple identification information, that is, the parameter P may have multiple values.
  • the multiple Preamble sets may correspond to RedCap terminals with different numbers of receiving antennas. For example, in some frequency bands, the minimum number of receiving antennas supported by non-RedCap terminals is 4, and for RedCap terminals, the number of receiving antennas can be reduced to 2 or 1. Then, for RedCap terminals with receiving antennas 2 and 1, if different Preamble sets are used to distinguish on one RO, each Preamble set can be set to correspond to an identification information for calculating RA-RNTI.
  • the value of the above parameter P may include, for example, 2 and 3, which respectively correspond to different Preamble sets.
  • the terminal device calculates the MSGB-RNTI according to the following formula (10):
  • MSGB-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id+14 ⁇ 80 ⁇ 8 ⁇ 2 ⁇ P formula (10)
  • P is the identification information of the Preamble set
  • s_id is the index of the first OFDM symbol occupied by the PRACH resource, 0 ⁇ s_id ⁇ 14
  • t_id is the index of the first slot occupied by the PRACH resource, 0 ⁇ t_id ⁇ 80
  • f_id is the index of the PRACH resource in the frequency domain, 0 ⁇ f_id ⁇ 8
  • ul_carrier_id is the UL carrier where the PRACH resource is located.
  • the terminal device calculates the MSGB-RNTI according to the following formula (11):
  • MSGB-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id+14 ⁇ 80 ⁇ 8 ⁇ 2+14 ⁇ 80 ⁇ 8 ⁇ 2 ⁇ P Formula (11)
  • P is the identification information of the Preamble set
  • s_id is the index of the first OFDM symbol occupied by the PRACH resource, 0 ⁇ s_id ⁇ 14
  • t_id is the index of the first slot occupied by the PRACH resource, 0 ⁇ t_id ⁇ 80
  • f_id is the index of the PRACH resource in the frequency domain, 0 ⁇ f_id ⁇ 8
  • ul_carrier_id is the UL carrier where the PRACH resource is located.
  • both the reduced capability terminal and the non-reduced capability terminal calculate the RA-RNTI according to formula (9). Since the Preamble sets corresponding to different types of terminals are different, correspondingly, the identification information of the Preamble sets is also different, therefore, the RA-RNTI calculated according to the formula (9) is also different.
  • the reduced capability terminal calculates the RA-RNTI according to formula (9), and the non-reduced capability terminal calculates the RA-RNTI according to the aforementioned formula (5), or, the non-reduced capability terminal calculates the RA-RNTI according to the formula (9). Both the RNTI and the reduced capability terminal calculate the RA-RNTI according to the aforementioned formula (5). In this case, the value of P is not 0.
  • both the reduced-capability terminal and the non-reduced-capability terminal can calculate the MSGB-RNTI according to the formula (10). Since the Preamble sets corresponding to different types of terminals are different, correspondingly, the identification information of the Preamble sets is also different, therefore, the MSGB-RNTI calculated according to the formula (10) is also different.
  • the reduced capability terminal calculates the MSGB-RNTI according to formula (10), and the non-reduced capability terminal calculates the MSGB-RNTI according to the aforementioned formula (8), or, the non-reduced capability terminal calculates the RA-RNTI according to the formula (10). Both the RNTI and the reduced capability terminal calculate the RA-RNTI according to the aforementioned formula (8). In this case, the value of P is not 1.
  • both the reduced-capability terminal and the non-reduced-capability terminal can calculate the MSGB-RNTI according to the formula (11). Since the Preamble sets corresponding to different types of terminals are different, correspondingly, the identification information of the Preamble sets is also different, therefore, the MSGB-RNTI calculated according to formula (11) is also different.
  • the reduced capability terminal calculates the MSGB-RNTI according to formula (11), and the non-reduced capability terminal calculates the RA-RNTI according to the above formula (8).
  • P is not equal to 0.
  • non-capability-reduced terminals calculate MSGB-RNTI according to formula (11), and all terminals with reduced capabilities calculate RA-RNTI according to formula (8).
  • P is not equal to 0.
  • the first identification information is the identification information of the type of the terminal device.
  • the terminal device is a terminal with a reduced capability
  • the value of the first identification information is a first value
  • the terminal device is a terminal with a non-reduced capability
  • the value of the first identification information is a second value, so The first value is different from the second value.
  • the first RNTI is the RA-RNTI and the MSGB-RNTI
  • the manner of determining the first RNTI will be described respectively.
  • Case 1 the first RNTI is RA-RNTI
  • the terminal device calculates the RA-RNTI according to the following formula (12):
  • RA-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id+14 ⁇ 80 ⁇ 8 ⁇ 2 ⁇ R formula (12)
  • R is the identification information of the type of terminal equipment
  • s_id is the index of the first OFDM symbol occupied by the PRACH resource, 0 ⁇ s_id ⁇ 14
  • t_id is the index of the first slot occupied by the PRACH resource, 0 ⁇ t_id ⁇ 80
  • f_id is the index of the PRACH resource in the frequency domain, 0 ⁇ f_id ⁇ 8
  • ul_carrier_id is the UL carrier where the PRACH resource is located.
  • the terminal device calculates the MSGB-RNTI according to the following formula (13):
  • MSGB-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id+14 ⁇ 80 ⁇ 8 ⁇ 2 ⁇ R formula (13)
  • R is the identification information of the type of terminal equipment
  • s_id is the index of the first OFDM symbol occupied by the PRACH resource, 0 ⁇ s_id ⁇ 14
  • t_id is the index of the first slot occupied by the PRACH resource, 0 ⁇ t_id ⁇ 80
  • f_id is the index of the PRACH resource in the frequency domain, 0 ⁇ f_id ⁇ 8
  • ul_carrier_id is the UL carrier where the PRACH resource is located.
  • the terminal device calculates the MSGB-RNTI according to the following formula (14):
  • MSGB-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id+14 ⁇ 80 ⁇ 8 ⁇ 2+14 ⁇ 80 ⁇ 8 ⁇ 2 ⁇ 2 ⁇ R Formula (14)
  • R is the identification information of the type of terminal equipment
  • s_id is the index of the first OFDM symbol occupied by the PRACH resource, 0 ⁇ s_id ⁇ 14
  • t_id is the index of the first slot occupied by the PRACH resource, 0 ⁇ t_id ⁇ 80
  • f_id is the index of the PRACH resource in the frequency domain, 0 ⁇ f_id ⁇ 8
  • ul_carrier_id is the UL carrier where the PRACH resource is located.
  • both the reduced capability terminal and the non-reduced capability terminal calculate the RA-RNTI according to formula (12). Since different types of terminals correspond to different type identifiers, the RA-RNTI calculated according to formula (12) is also different.
  • the reduced capability terminal calculates the RA-RNTI according to formula (12).
  • Non-reduced capability terminals calculate RA-RNTI according to formula (5). In this case, R is not equal to zero.
  • the non-reduced capability terminal calculates the RA-RNTI according to formula (12). All terminals with reduced capabilities calculate RA-RNTI according to formula (5). In this case, R is not equal to 0.
  • both the reduced-capability terminal and the non-reduced-capability terminal calculate the MSGB-RNTI according to the formula (13). Since different types of terminals correspond to different type identifiers, the MSGB-RNTI calculated according to formula (13) is also different.
  • the capability-reduced terminal calculates MSGB-RNTI according to formula (13), and all non-capability-reduced terminals calculate RA-RNTI according to formula (8).
  • R is not equal to 1.
  • non-capability-reduced terminals calculate MSGB-RNTI according to formula (13), and all terminals with reduced capabilities calculate RA-RNTI according to formula (8).
  • R is not equal to 1.
  • both the reduced-capability terminal and the non-reduced-capability terminal calculate MSGB-RNTI according to the formula (14). Since different types of terminals correspond to different type identifiers, the MSGB-RNTI calculated according to formula (14) is also different.
  • the capability-reduced terminal calculates MSGB-RNTI according to formula (14), and all non-capability-reduced terminals calculate RA-RNTI according to formula (8). In this case, R is not equal to zero.
  • non-capability-reduced terminals calculate MSGB-RNTI according to formula (14), and all terminals with reduced capabilities calculate RA-RNTI according to formula (8).
  • R is not equal to zero.
  • the first identification information is identification information related to the transmission mode requested by the terminal device, which is recorded as the transmission mode identification.
  • the terminal device may request the network device for a downlink transmission mode and/or coverage level through an uplink message in the random access process (for example, the first message in the random access process, such as Msg1 or MsgA).
  • an uplink message in the random access process for example, the first message in the random access process, such as Msg1 or MsgA.
  • a terminal device with limited coverage such as a terminal with a reduced capability, it may request a certain downlink transmission mode and/or coverage level from the network device according to the measurement result of the downlink reference signal, so as to improve network coverage.
  • terminal devices of different types request different downlink transmission modes and/or coverage levels from the network device. Therefore, network devices can distinguish different types of terminals based on this. Different transmission modes are further used to identify terminals representing different transmission modes or coverage levels, and then RA-RNTI or MSGB-RNTI is calculated through the transmission mode identification, and different types of terminals can be distinguished through RA-RNTI or MSGB-RNTI.
  • the downlink transmission manner may include a transmission manner of the first information, for example, a transmission manner of RAR, or a transmission manner of MsgB.
  • the transmission mode of the RAR or the transmission mode of the MsgB may include a transmission mode of a PDCCH scheduling the RAR and/or a transmission mode of a PDSCH bearing the RAR.
  • the PDCCH transmission manner may include a PDCCH repeated transmission manner
  • the PDSCH transmission manner may include a PDSCH repeated transmission manner
  • the transmission mode may include scheduling resource size, modulation and coding scheme and other information related to transmission.
  • the first RNTI is the RA-RNTI and the MSGB-RNTI
  • the manner of determining the first RNTI will be described respectively.
  • Case 1 the first RNTI is RA-RNTI
  • the terminal device calculates the RA-RNTI according to the following formula (15):
  • RA-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id+14 ⁇ 80 ⁇ 8 ⁇ 2 ⁇ Q formula (15)
  • Q is the transmission mode identifier
  • s_id is the index of the first OFDM symbol occupied by the PRACH resource, 0 ⁇ s_id ⁇ 14
  • t_id is the index of the first slot occupied by the PRACH resource, 0 ⁇ t_id ⁇ 80
  • f_id is the index of the PRACH resource in the frequency domain, 0 ⁇ f_id ⁇ 8
  • ul_carrier_id is the UL carrier where the PRACH resource is located.
  • the terminal device calculates the MSGB-RNTI according to the following formula (16):
  • MSGB-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id+14 ⁇ 80 ⁇ 8 ⁇ 2 ⁇ Q formula (16)
  • Q is the transmission mode identifier
  • s_id is the index of the first OFDM symbol occupied by PRACH resources, 0 ⁇ s_id ⁇ 14
  • t_id is the index of the first slot occupied by PRACH resources, 0 ⁇ t_id ⁇ 80
  • f_id is PRACH
  • ul_carrier_id is the UL carrier where the PRACH resource is located.
  • the terminal device calculates the MSGB-RNTI according to the following formula (17):
  • MSGB-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id+14 ⁇ 80 ⁇ 8 ⁇ 2+14 ⁇ 80 ⁇ 8 ⁇ 2 ⁇ Q Formula (17)
  • Q is the transmission mode identifier
  • s_id is the index of the first OFDM symbol occupied by PRACH resources, 0 ⁇ s_id ⁇ 14
  • t_id is the index of the first slot occupied by PRACH resources, 0 ⁇ t_id ⁇ 80
  • f_id is PRACH
  • ul_carrier_id is the UL carrier where the PRACH resource is located.
  • both the reduced capability terminal and the non-reduced capability terminal calculate the RA-RNTI according to formula (15). Since the downlink transmission modes requested by different types of terminals are different, the corresponding transmission mode identifiers are different, therefore, the RA-RNTI calculated according to the formula (15) is also different.
  • the reduced capability terminal calculates the RA-RNTI according to formula (15).
  • Non-reduced capability terminals calculate RA-RNTI according to formula (5). In this case, Q is not equal to zero.
  • the non-reduced capability terminal calculates the RA-RNTI according to formula (15). All terminals with reduced capabilities calculate RA-RNTI according to formula (5). In this case, Q is not equal to zero.
  • both the reduced capability terminal and the non-reduced capability terminal calculate MSGB-RNTI according to the formula (16). Since the downlink transmission modes requested by different types of terminals are different, the corresponding transmission mode identifiers are different, therefore, the MSGB-RNTI calculated according to the formula (16) is also different.
  • the capability-reduced terminal calculates MSGB-RNTI according to formula (16), and all non-capability-reduced terminals calculate RA-RNTI according to formula (8).
  • Q is not equal to 1.
  • non-capability-reduced terminals calculate MSGB-RNTI according to formula (16), and all terminals with reduced capabilities calculate RA-RNTI according to formula (8).
  • Q is not equal to 1.
  • both the reduced capability terminal and the non-reduced capability terminal calculate the MSGB-RNTI according to the formula (17). Since the downlink transmission modes requested by different types of terminals are different, the corresponding transmission mode identifiers are different, therefore, the MSGB-RNTI calculated according to the formula (17) is also different.
  • the reduced-capability terminal calculates the MSGB-RNTI according to formula (17), and the non-reduced-capability terminal calculates the RA-RNTI according to the above-mentioned formula (8).
  • Q is not equal to zero.
  • non-capability-reduced terminals calculate MSGB-RNTI according to formula (17), and all terminals with reduced capabilities calculate RA-RNTI according to formula (8).
  • Q is not equal to zero.
  • the first RNTI corresponding to the first information is generated according to the first identification information associated with the type of terminal equipment. Since the first identification information corresponding to different types of terminal equipment is different, thus It can ensure that the network device carries the first information of different types of terminal devices through different first RNTIs, so that the network device can optimize the transmission of different types of terminal devices in the second step in the random access process, for example, according to The type of terminal sets the transmission mode of the downlink channel, such as the size of the scheduling resource, the modulation and coding scheme, etc., which is conducive to improving the efficiency of the downlink spectrum.
  • FIG. 6 is a schematic interaction diagram of a wireless communication method 400 according to an embodiment of the present application. As shown in FIG. 6, the method 400 includes at least part of the following content:
  • the network device uses the first resource to send the first information in the random access process
  • the terminal device uses the first resource to receive the first information sent by the network device during the random access process
  • the first resource is a resource corresponding to the type of the terminal device.
  • the network device may configure corresponding resources for receiving the first information for terminal devices of different types or capabilities.
  • the terminal device receives second configuration information of the network device, where the second configuration information is used to configure resources used by terminal devices of the type to which the terminal device belongs to receive the first information.
  • the second configuration information is sent through a system message, such as through SIB1.
  • the type of the terminal device may include two types, such as a reduced capability terminal and a non-reduced capability terminal, or may include more types, for example, a reduced capability terminal, a normal terminal and an enhanced capability terminal Etc., wherein, the capability of the enhanced capability terminal is higher than that of the normal terminal, and the capability of the normal terminal is higher than that of the reduced capability terminal, or the reduced capability terminal can also be divided into multiple types, for example, according to the receiving antenna of the terminal device The number will divide the terminal with reduced capability into multiple types, and this application does not limit the way of dividing the types of terminal equipment.
  • two types of terminals that is, a terminal with reduced capability and a terminal without reduced capability
  • the type of the terminal device may be classified according to the capability of the terminal device, and the capability of the terminal device may include at least one of the following: supported bandwidth size, data processing capability, maximum modulation order number, number of receiving antennas, receiving antenna gain and coverage level.
  • the capability of the terminal device may include at least one of the following: supported bandwidth size, data processing capability, maximum modulation order number, number of receiving antennas, receiving antenna gain and coverage level.
  • other performance indicators may also be included, and the present application is not limited thereto.
  • the terminal device is a terminal with a reduced capability or a terminal with a non-reduced capability.
  • the first information is a PDCCH for scheduling RAR, or the first information is message B. That is, the first resource may be a resource for receiving the PDCCH, or a resource for receiving the MsgB.
  • the first resource includes at least one of the following:
  • the network device can be configured with at least one of the following different:
  • the initial downlink bandwidth part BWP control resource set (Control Resource Set, CORESET), search space (Search Space, SS).
  • the network device may configure a terminal with a reduced capability and a terminal with a non-reduced capability to use different initial downlink BWPs to receive the first information, or to use different CORESETs or SSs to receive the first information.
  • FIG. 7 is a schematic diagram of different CORESETs in the same downlink BWP for distinguishing a terminal with a reduced capability from a terminal with a non-reduced capability.
  • FIG. 8 is a schematic diagram of distinguishing a terminal with reduced capability from a terminal without reduced capability by using different downlink BWPs.
  • the network device before the network device sends the first information, the network device already knows the type or capability of the terminal device.
  • the terminal device may indicate the type or capability of the terminal device to the network device through a first message, where the first message is the first message in a random access procedure.
  • the terminal device may indicate the type of the terminal device by using a random access preamble, an initial uplink BWP for sending the first message, and at least one item of PRACH resources for sending the first message.
  • different types of terminal devices correspond to different resources for sending the first information
  • the network device sends the first information through resources associated with the type of the terminal device, thereby ensuring that the network device
  • the first information sent to different types of terminal devices is carried by different resources, so that the second step in the random access process of the network device can optimize the transmission of different types of terminal devices, for example, according to the type of terminal settings
  • the transmission mode of the downlink channel such as the scheduling resource size, modulation and coding scheme, etc., is conducive to improving the downlink spectrum efficiency.
  • Fig. 9 shows a schematic block diagram of a terminal device 500 according to an embodiment of the present application.
  • the terminal device 500 includes:
  • a processing unit 510 configured to determine a first wireless network temporary identifier RNTI according to the random access preamble identifier RAPID of the terminal device;
  • the communication unit 520 is configured to receive the first information sent by the network device during the random access process according to the first RNTI.
  • the first RNTI includes a random access radio network temporary identifier RA-RNTI.
  • the first information includes a physical downlink control channel PDCCH for scheduling a random access response RAR and/or a physical downlink shared channel PDSCH for carrying the RAR.
  • the first RNTI includes a message B radio network temporary identifier MSGB-RNTI, and the message B is the second message in the two-step random access process.
  • the first information includes message B.
  • the communication unit 520 is also used to:
  • the first configuration information is used to configure a first RAPID set, the first RAPID set includes at least one RAPID, and the first RAPID set corresponds to a first type of terminal device , the first type is the type to which the terminal device belongs.
  • the first type of terminal device is a terminal with reduced capability.
  • none of the RAPIDs included in the first RAPID set is zero.
  • the communication unit 510 is also used to:
  • the communication unit 510 is also used to:
  • the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system-on-chip.
  • the aforementioned processing unit may be one or more processors.
  • terminal device 500 may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 500 are for realizing the method shown in FIG. 4
  • the corresponding process of the terminal device in 200 will not be repeated here.
  • Fig. 10 shows a schematic block diagram of a terminal device 600 according to an embodiment of the present application.
  • the terminal device 600 includes:
  • the processing unit 610 is configured to determine a first wireless network temporary identifier RNTI according to the first identification information, where the first identification information is associated with the type of the terminal device;
  • the communication unit 620 is configured to receive the first information sent by the network device during the random access process according to the first RNTI.
  • the first RNTI includes a random access RA-RNTI.
  • the first information includes a physical downlink control channel PDCCH for scheduling a random access response RAR and/or a physical downlink shared channel PDSCH for carrying the RAR.
  • the first RNTI includes a message B radio network temporary identifier MSGB-RNTI, and the message B is the second message in the two-step random access process.
  • the first information includes message B.
  • the association between the first identification information and the type of the terminal device includes: the first identification information is the random access preamble identifier RAPID of the terminal device, and the RAPID of the terminal device Configure according to the type of the terminal device.
  • the association between the first identification information and the type of the terminal device includes: the first identification information is identification information of a random access preamble set of the terminal device, and the terminal device The random access preamble set is configured according to the type of the terminal device.
  • the association between the first identification information and the type of the terminal device includes: the first identification information is identification information of the type of the terminal device.
  • the first RNTI is RA-RNTI, and the value of the first identification information is not zero;
  • the first RNTI is MSGB-RNTI, and the value of the first identification information is not 0 and 1.
  • the type of the terminal device is a reduced-capability terminal type or a non-reduced-capability terminal type.
  • the communication unit 620 is also used to:
  • the communication unit 620 is also used to:
  • the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system-on-chip.
  • the aforementioned processing unit may be one or more processors.
  • terminal device 600 may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 600 are to realize the method shown in FIG. 5
  • the corresponding process of the terminal device in 300 will not be repeated here.
  • Fig. 11 shows a schematic block diagram of a terminal device 700 according to an embodiment of the present application.
  • the terminal device 700 includes:
  • the communication unit 710 is configured to use a first resource to receive first information sent by a network device during a random access process, where the first resource is a resource corresponding to a type of the terminal device.
  • the first information is a physical downlink control channel PDCCH that schedules a random access response RAR, or the first information is message B.
  • the first resource includes at least one of the following:
  • the communication unit 710 is also used to:
  • the second configuration information is sent through a system message.
  • the communication unit 710 is also used to:
  • the communication unit 710 is also used to:
  • At least one item of the PRACH resource corresponding to the first message indicates the type of the terminal device through the random access preamble, the initial uplink BWP corresponding to the first message, and the PRACH resource corresponding to the first message.
  • the type of the terminal device is a reduced-capability terminal type or a non-reduced-capability terminal type.
  • the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system-on-chip.
  • the aforementioned processing unit may be one or more processors.
  • terminal device 700 may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 700 are for realizing the method shown in FIG. 6
  • the corresponding process of the terminal device in 400 will not be repeated here.
  • Fig. 12 shows a schematic block diagram of a network device 800 according to an embodiment of the present application.
  • the network device 800 includes:
  • the processing unit 810 is configured to determine the first wireless network temporary identifier RNTI according to the random access preamble identifier RAPID of the terminal device;
  • a communication unit 820 configured to send first information in a random access process to the terminal device according to the first RNTI.
  • the first RNTI includes a random access radio network temporary identifier RA-RNTI.
  • the first information includes a physical downlink control channel PDCCH for scheduling a random access response RAR and/or a physical downlink shared channel PDSCH for carrying the RAR.
  • the first RNTI includes a message B radio network temporary identifier MSGB-RNTI, and the message B is the second message in the two-step random access process.
  • the first information includes message B.
  • the communication unit 820 is also used to:
  • the first configuration information is used to configure a first RAPID set, where the first RAPID set includes at least one RAPID, and the first RAPID set corresponds to a first type of terminal device,
  • the first type is the type to which the terminal device belongs.
  • the first type of terminal device is a terminal with reduced capability.
  • none of the RAPIDs included in the first RAPID set is zero.
  • processing unit 810 is further configured to:
  • processing unit 810 is further configured to:
  • the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system-on-chip.
  • the aforementioned processing unit may be one or more processors.
  • the network device 800 may correspond to the network device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the network device 800 are to realize the method shown in FIG. 4
  • the corresponding processes of the network devices in 200 will not be repeated here.
  • Fig. 13 shows a schematic block diagram of a network device 900 according to an embodiment of the present application.
  • the network device 900 includes:
  • the processing unit 910 is configured to determine a first wireless network temporary identifier RNTI according to the first identification information, where the first identification information is associated with the type of the terminal device;
  • the communication unit 920 is configured to send first information of a random access procedure to the terminal device according to the first RNTI.
  • the first RNTI includes a random access RA-RNTI.
  • the first information includes a physical downlink control channel PDCCH for scheduling a random access response RAR and/or a physical downlink shared channel PDSCH for carrying the RAR.
  • the first RNTI includes a message B radio network temporary identifier MSGB-RNTI, and the message B is the second message in the two-step random access process.
  • the first information includes message B.
  • the association between the first identification information and the type of the terminal device includes: the first identification information is the random access preamble identifier RAPID of the terminal device, and the RAPID of the terminal device Configure according to the type of the terminal device.
  • the association between the first identification information and the type of the terminal device includes: the first identification information is identification information of a random access preamble set of the terminal device, and the terminal device The random access preamble set is configured according to the type of the terminal device.
  • the association between the first identification information and the type of the terminal device includes: the first identification information is identification information of the type of the terminal device.
  • the first RNTI is RA-RNTI, and the value of the first identification information is not zero;
  • the first RNTI is MSGB-RNTI, and the value of the first identification information is not 0 and 1.
  • the type of the terminal device is a reduced-capability terminal type or a non-reduced-capability terminal type.
  • processing unit 910 is further configured to:
  • processing unit 910 is further configured to:
  • the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system-on-chip.
  • the aforementioned processing unit may be one or more processors.
  • the network device 900 may correspond to the network device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the network device 900 are to realize the method shown in FIG. 5
  • the corresponding processes of the network devices in 300 will not be repeated here.
  • Fig. 14 shows a schematic block diagram of a network device 1000 according to an embodiment of the present application.
  • the network device 1000 includes:
  • the communication unit 1010 is configured to use the first resource to send the first information in the random access process to the terminal device, where the first resource is a resource corresponding to the type of the terminal device.
  • the first information is a physical downlink control channel PDCCH that schedules a random access response RAR, or the first information is message B.
  • the first resource includes at least one of the following:
  • the communication unit 1010 is also used to:
  • the second configuration information is sent through a system message.
  • the network device further includes:
  • a processing unit configured to determine the type of the terminal device according to a first message sent by the terminal device, where the first message is a first message in a random access process.
  • the processing unit is specifically used for:
  • the type of the terminal device is a reduced-capability terminal type or a non-reduced-capability terminal type.
  • the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system-on-chip.
  • the aforementioned processing unit may be one or more processors.
  • the network device 1000 may correspond to the network device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the network device 1000 are for realizing the method shown in FIG. 6
  • the corresponding flow of the network device in 400 will not be repeated here.
  • Fig. 15 is a schematic structural diagram of a communication device 1100 provided by an embodiment of the present application.
  • the communication device 1100 shown in FIG. 15 includes a processor 1110, and the processor 1110 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
  • the communication device 1100 may further include a memory 1120 .
  • the processor 1110 can invoke and run a computer program from the memory 1120, so as to implement the method in the embodiment of the present application.
  • the memory 1120 may be an independent device independent of the processor 1110 , or may be integrated in the processor 1110 .
  • the communication device 1100 may further include a transceiver 1130, and the processor 1110 may control the transceiver 1130 to communicate with other devices, specifically, to send information or data to other devices, or to receive other Information or data sent by the device.
  • the processor 1110 may control the transceiver 1130 to communicate with other devices, specifically, to send information or data to other devices, or to receive other Information or data sent by the device.
  • the transceiver 1130 may include a transmitter and a receiver.
  • the transceiver 1130 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 1100 may specifically be the network device of the embodiment of the present application, and the communication device 1100 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, details are not repeated here. .
  • the communication device 1100 may specifically be the mobile terminal/terminal device of the embodiment of the present application, and the communication device 1100 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, for the sake of brevity , which will not be repeated here.
  • FIG. 16 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 1200 shown in FIG. 16 includes a processor 1210, and the processor 1210 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
  • the chip 1200 may further include a memory 1220 .
  • the processor 1210 can invoke and run a computer program from the memory 1220, so as to implement the method in the embodiment of the present application.
  • the memory 1220 may be an independent device independent of the processor 1210 , or may be integrated in the processor 1210 .
  • the chip 1200 may also include an input interface 1230 .
  • the processor 1210 can control the input interface 1230 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.
  • the chip 1200 may also include an output interface 1240 .
  • the processor 1210 can control the output interface 1240 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in the methods of the embodiment of the present application.
  • the chip can implement the corresponding processes implemented by the network device in the methods of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application.
  • the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application.
  • the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application.
  • the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.
  • FIG. 17 is a schematic block diagram of a communication system 1300 provided by an embodiment of the present application. As shown in FIG. 17 , the communication system 1300 includes a terminal device 1310 and a network device 1320 .
  • the terminal device 1310 can be used to realize the corresponding functions realized by the terminal device in the above method
  • the network device 1320 can be used to realize the corresponding functions realized by the network device in the above method.
  • the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Program logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash.
  • the volatile memory can be Random Access Memory (RAM), which acts as external cache memory.
  • RAM Static Random Access Memory
  • SRAM Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • Synchronous Dynamic Random Access Memory Synchronous Dynamic Random Access Memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM, DDR SDRAM enhanced synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM synchronous connection dynamic random access memory
  • Synchlink DRAM, SLDRAM Direct Memory Bus Random Access Memory
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the methods of the embodiments of the present application.
  • the computer program enables the computer to execute the corresponding processes implemented by the network device in the methods of the embodiments of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application , for the sake of brevity, it is not repeated here.
  • the embodiment of the present application also provides a computer program product, including computer program instructions.
  • the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the Let me repeat for the sake of brevity, the Let me repeat.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods of the embodiments of the present application, For the sake of brevity, details are not repeated here.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program executes the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program executes the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application.
  • the computer program executes each method in the embodiment of the present application to be implemented by the mobile terminal/terminal device
  • the corresponding process will not be repeated here.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

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

Abstract

La présente invention concerne un procédé de communication sans fil, un équipement terminal et un dispositif de réseau. Le procédé comprend les étapes suivantes : un équipement terminal détermine un premier identifiant temporaire de réseau radio (RNTI) selon un identifiant de préambule d'accès aléatoire (RAPID) de l'équipement terminal ; et selon le premier RNTI, il reçoit des premières informations qui sont envoyées par un dispositif de réseau pendant un processus d'accès aléatoire. Différents types d'équipements terminaux correspondent à des RAPID différents, de telle sorte qu'il peut être garanti qu'un dispositif de réseau transporte des premières informations de différents types d'équipements terminaux au moyen de différents premiers RNTI, et ainsi le dispositif de réseau peut optimiser des transmissions de différents types d'équipements terminaux dans la seconde étape d'un procédé d'accès aléatoire, tel que le réglage du mode de transmission d'un canal descendant selon le type d'un terminal, la taille d'une ressource de planification, et un schéma de modulation et de codage, facilitant ainsi l'amélioration de l'efficacité du spectre de liaison descendante.
PCT/CN2021/095408 2021-05-24 2021-05-24 Procédé de communication sans fil, équipement terminal et dispositif de réseau WO2022246588A1 (fr)

Priority Applications (2)

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PCT/CN2021/095408 WO2022246588A1 (fr) 2021-05-24 2021-05-24 Procédé de communication sans fil, équipement terminal et dispositif de réseau
CN202180090566.6A CN116803141A (zh) 2021-05-24 2021-05-24 无线通信的方法、终端设备和网络设备

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PCT/CN2021/095408 WO2022246588A1 (fr) 2021-05-24 2021-05-24 Procédé de communication sans fil, équipement terminal et dispositif de réseau

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WO2020020278A1 (fr) * 2018-07-25 2020-01-30 Oppo广东移动通信有限公司 Procédé d'accès aléatoire et dispositif de communication
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