WO2023198059A1 - Procédé et appareil de communication, système, et support de stockage - Google Patents

Procédé et appareil de communication, système, et support de stockage Download PDF

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Publication number
WO2023198059A1
WO2023198059A1 PCT/CN2023/087618 CN2023087618W WO2023198059A1 WO 2023198059 A1 WO2023198059 A1 WO 2023198059A1 CN 2023087618 W CN2023087618 W CN 2023087618W WO 2023198059 A1 WO2023198059 A1 WO 2023198059A1
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WIPO (PCT)
Prior art keywords
resources
resource
prach
csi
terminal
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PCT/CN2023/087618
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English (en)
Chinese (zh)
Inventor
刘云
李强
薛丽霞
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华为技术有限公司
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Priority claimed from CN202210585953.3A external-priority patent/CN116963115A/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2023198059A1 publication Critical patent/WO2023198059A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present application relates to the field of communication technology, and in particular, to a communication method, device, system and storage medium.
  • terminals access network equipment through a random access channel (RACH) process.
  • RACH random access channel
  • Embodiments of the present application provide a communication method, device, system and storage medium to enhance uplink coverage during random access.
  • a communication method is provided, which is applied to a network device.
  • the method includes: the network device determines configuration information, and the network device sends the configuration information.
  • the configuration information is used to indicate N associated resources, and the N associated resources include first resources and second resources; the first resource corresponds to a first physical random access channel (PRACH) resource, and the third The second resource corresponds to the second PRACH resource; N is a positive integer greater than or equal to 2.
  • PRACH physical random access channel
  • the N associated resources are N associated beams.
  • the configuration information indicates N associated resources.
  • the first resource among the N associated resources corresponds to the first PRACH resource, and the second resource corresponds to the second PRACH resource. Since the PRACH resource is used by the terminal for Uplink signals are transmitted during the random access process. Therefore, by configuring multiple associated resources, uplink signals can be sent on multiple PRACH resources corresponding to the multiple associated resources to enhance uplink coverage during the random access process.
  • the method further includes: the network device receives a first signal sent by the terminal on the first PRACH resource, and receives a second signal sent by the terminal on the second PRACH resource. Signal.
  • the terminal may send uplink signals on multiple PRACH resources corresponding to the multiple associated resources during the random access process to enhance uplink coverage during the random access process.
  • the first resource also corresponds to a third PRACH resource.
  • the method further includes: the network device receiving a third signal sent by the terminal on the third PRACH resource.
  • the method further includes: the network device based on the received at least Two signals, the at least two signals are combined to obtain signal gain, thereby enhancing uplink coverage.
  • the first PRACH resource includes a first time domain resource, a first frequency domain resource and a first code domain resource.
  • the first code domain resource includes a first preamble sequence.
  • SSB synchronization signal block
  • CSI -RS channel state information reference signals
  • the N associated resources may all be SSB resources (beams), or all be CSI-RS resources (beams), or part of them may be SSB resources (beams) and part of them may be CSI-RS resources (beams), This provides a flexible configuration method.
  • the configuration information when the N associated resources include SSB resources, the configuration information includes the index of the SSB resources, thereby providing a way to explicitly indicate the associated SSB resources.
  • the configuration information includes PRACH resource location information corresponding to the SSB resources. Since there is a corresponding relationship between SSB resources and PRACH resources, the associated SSB resources can be determined through the PRACH resource location information, thus providing a way to implicitly indicate the associated SSB resources.
  • the configuration information when the N associated resources include CSI-RS resources, the configuration information includes an index of the CSI-RS resource, thereby providing an explicit indication of the associated CSI-RS resource. RS resource way.
  • the configuration information includes indication information, and the indication information is used to indicate one of the N CSI-RS resources.
  • Combination mode can save signaling overhead.
  • the configuration information further includes indication information of the first code domain resource.
  • the indication information of the first code domain resource includes: an index or index range of the first code domain resource.
  • a communication method is provided, applied to a terminal.
  • the method includes: the terminal receives configuration information from a network device, and sends a first signal on a first PRACH resource according to the configuration information, and sends a first signal on a second PRACH resource according to the configuration information. Send a second signal.
  • the configuration information is used to indicate N associated resources, the N associated resources include first resources and second resources; the first resource corresponds to the first PRACH resource, and the second resource corresponds to the second PRACH resource; N is a positive integer greater than or equal to 2.
  • the N associated resources are N associated beams.
  • the configuration information indicates N associated resources.
  • the first resource among the N associated resources corresponds to the first PRACH resource, and the second resource corresponds to the second PRACH resource. Since the PRACH resource is used by the terminal for Uplink signals are transmitted during the random access process. Therefore, by configuring multiple associated resources, uplink signals can be sent on multiple PRACH resources corresponding to the multiple associated resources to enhance uplink coverage during the random access process.
  • the first resource also corresponds to a third PRACH resource.
  • the method further includes: on the third PRACH resource, the terminal sends a third signal.
  • the terminal on the first PRACH resource, the terminal sends a first signal, including: if the N associated resources meet the first requirement, then on the first PRACH resource , the terminal sends the first signal. Since the first PRACH resource meets the first requirement, the terminal sends a signal on the first PRACH resource, Signal performance can be improved, which in turn can increase the likelihood of accessing network devices.
  • the method further includes: obtaining at least two signal strength values, the at least two signal strength values being used to indicate signal strengths of signals received on the N associated resources;
  • the N associated resources meeting the first requirement includes: determining that the N associated resources meet the first requirement based on the at least two signal strength values and a set threshold.
  • the N associated resources Meeting the first requirement can improve the performance of signals sent by the terminal, thereby improving the possibility of accessing network equipment.
  • the signal strength value is used to indicate equivalent signal strength; the signal strength value is based on the reference signal received power (RSRP) and signal repetition of the signals received on the N associated resources. The number of times is determined.
  • RSRP reference signal received power
  • the first PRACH resource includes a first time domain resource, a first frequency domain resource and a first code domain resource.
  • the first code domain resource includes a first preamble sequence.
  • the N associated resources include N associated SSB resources; or the N associated resources include N associated CSI-RS resources; or the N associated resources
  • the configuration information includes an index of the SSB resource.
  • the configuration information includes PRACH resource location information corresponding to the SSB resources.
  • the configuration information includes an index of the CSI-RS resource.
  • the configuration information includes indication information, and the indication information is used to indicate one of the N CSI-RS resources. Combination method.
  • the configuration information further includes indication information of the first code domain resource.
  • the indication information of the first code domain resource includes: an index or index range of the first code domain resource.
  • a communication system in a third aspect, includes a network device (such as a base station) and a terminal (such as a mobile phone).
  • the network device is used to perform any one of the methods in the first aspect.
  • the terminal uses In performing the method described in any one of the second aspects.
  • a fourth aspect provides a network device, including: a processor, a memory, and a computer program; the computer program is stored on the memory, and when the computer program is executed by the processor, the network device The method as described in any one of the above first aspects is performed.
  • a terminal including: a processor, a memory, and a computer program; the computer program is stored on the memory, and when the computer program is executed by the processor, the terminal is caused to execute as follows: The method according to any one of the above second aspects.
  • a sixth aspect provides a computer-readable storage medium, including a computer program, which when the computer program is run on an electronic device, causes the electronic device to perform the method described in any one of the above first aspects, or The method as described in any one of the above second aspects is performed.
  • a seventh aspect provides a computer program product that, when run on an electronic device, causes the electronic device to perform the method described in any one of the above first aspects, or to perform the method described in any one of the above second aspects. method described in the item.
  • a chip including: a memory for storing a computer program; a processor; when the processor calls and runs the computer program from the memory, the electronic device installed with the chip executes the above-mentioned first aspect.
  • Figure 1 is a schematic diagram of the communication system architecture applicable to the embodiment of the present application.
  • Figure 2 is a schematic diagram of a four-step random access process
  • Figure 3 is a schematic diagram of the mapping relationship between PRACH RO and SSB resources in the embodiment of this application;
  • Figure 4 is a schematic flow chart of a communication method implemented on the network side provided by an embodiment of the present application.
  • Figure 5 is a schematic diagram of a transmission method in which three SSB beams are used as associated beams in an embodiment of the present application;
  • Figure 6 is a schematic diagram of a transmission method in which part of the CSI-RS beam corresponding to an SSB beam is used as an associated beam in an embodiment of the present application;
  • Figure 7 is a schematic diagram of the corresponding relationship between SSB beams and PRACH resources in the embodiment of the present application.
  • Figure 8 is a schematic diagram of the associated CSI-RS beam group in this embodiment of the present application.
  • Figure 9 is a schematic diagram of a communication method implemented on the terminal side provided by an embodiment of the present application.
  • Figure 10 is a schematic diagram of the correspondence between SSB beams, CSI-RC beams and PRACH resources in the embodiment of the present application;
  • Figure 11 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • Figure 12 is a schematic structural diagram of a terminal provided by an embodiment of the present application.
  • Figure 13 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • one or more refers to one, two or more than two; "and/or” describes the association relationship of associated objects, indicating that three relationships can exist; for example, A and/or B can mean: A alone exists, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural.
  • the character "/" generally indicates that the related objects are in an "or” relationship.
  • the communication system 100 includes: a terminal 101 and a network device 102.
  • the terminal 101 and the network device 102 may interact through an air interface.
  • the air interface may be called a Uu (UTRAN-to-UE) interface, where UTRAN is the English abbreviation of UMTS terrestrial radio access network, that is, Universal Mobile Telecommunications System (UMTS) terrestrial wireless access network.
  • UTRAN is the English abbreviation of UMTS terrestrial radio access network, that is, Universal Mobile Telecommunications System (UMTS) terrestrial wireless access network.
  • UMTS Universal Mobile Telecommunications System
  • the terminal 101 in order to establish a connection with the network device 102 and request the network device 102 to allocate corresponding resources to the terminal 101 for normal service transmission, the terminal 101 usually first needs to perform random access to the network device 102. That is, the terminal 101 accesses the network device 102 through a random access process.
  • uplink transmission and downlink transmission can be performed between the terminal 101 and the network device 102.
  • the uplink transmission refers to the terminal 101 sending control information and/or data to the network device 102 through the air interface (such as the Uu interface); the downlink transmission refers to the network device 102 sending the port to the terminal 101 through the air interface (such as the Uu interface). Control information and/or data.
  • Network equipment has equipment that can provide random access functions for terminals or chips that can be set on the equipment.
  • the equipment includes but is not limited to: evolved node B (evolved Node B, eNB), wireless network controller (radio network controller) , RNC), Node B (Node B, NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved, NodeB, or home Node B, HNB), baseband unit (BBU), remote radio unit (RRU), access point (AP), wireless relay node in the wireless fidelity (wireless fidelity, WIFI) system , wireless backhaul node, transmission point (transmission and reception point, TRP or transmission point, TP), etc., can also be 5G, such as 5G new communication protocol (new radio, NR), gNB in the system, or transmission point (TRP or TP), one or a group (including multiple antenna panels) of antenna panels of a base station in a 5G system, or it can also be
  • a terminal also known as user equipment (UE), mobile station (MS), mobile terminal (MT), etc.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • the terminal includes a handheld device with a wireless connection function, a vehicle-mounted device, and the like.
  • vehicle-mounted device is a vehicle terminal (vehicle UE).
  • terminals can be: mobile phones, tablets, laptops, PDAs, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (Augmented) reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid Terminals, wireless terminals in transportation safety, wireless terminals in smart cities, or wireless terminals in smart homes Terminal etc.
  • the terminal may also be a vehicle-mounted communication module or other embedded communication module.
  • the fifth generation mobile communication system can use high-frequency communication, that is, high-frequency band signals are used to transmit data.
  • high-frequency communications A major problem with high-frequency communications is that signal energy drops sharply with transmission distance, resulting in short signal transmission distances.
  • high-frequency communications use analog beam technology. By weighting the antenna array, the signal energy is concentrated in a smaller angular range to form a signal similar to a beam (called an analog beam, or beam for short). , thereby improving the transmission distance. Beams are used for transmission between network equipment and terminals.
  • a beam is a communication resource.
  • the beam can be a wide beam, a narrow beam, or other types of beams.
  • the technology for forming beams may be beam forming technology or other technical means.
  • the beamforming technology can be specifically digital beamforming technology, analog beamforming technology, hybrid digital beamforming technology or hybrid analog beamforming technology, etc. Different beams can be considered as different resources.
  • a beam can be called a spatial domain filter, a spatial filter, a spatial domain parameter, a spatial parameter, a spatial domain setting, a spatial setting. , quasi-colocation (QCL) information, QCL assumption, or QCL indication, etc.
  • Beams can be indicated by a transmission configuration indicator state (TCI-state) parameter, or by a spatial relation parameter. Therefore, in this application, the beam can be replaced by spatial filter, spatial filter, spatial parameter, spatial parameter, spatial setting, spatial setting, QCL information, QCL assumption, QCL indication, TCI-state (including uplink TCI-state, downlink TCI-state). TCI-state), or spatial relationship, etc.
  • TCI-state including uplink TCI-state, downlink TCI-state. TCI-state
  • TCI-state TCI-state
  • Beam can also be replaced by other terms indicating beam, which is not limited in this application.
  • the beam used to transmit signals can be called transmission beam (transmission beam, Tx beam), spatial domain transmission filter (spatial domain transmission filter), spatial transmission filter (spatial transmission filter), spatial domain transmission parameter (spatial domain transmission parameter), spatial transmission parameter, spatial domain transmission setting, or spatial transmission setting.
  • the beam used to receive the signal may be called a reception beam (reception beam, Rx beam), spatial domain reception filter (spatial domain reception filter), spatial reception filter (spatial reception filter), spatial domain reception parameter (spatial domain reception parameter) or spatial reception parameter, spatial domain reception setting, or spatial reception setting.
  • the transmitting beam may refer to the distribution of signal strength in different directions in space after the signal is emitted by the antenna
  • the receiving beam may refer to the signal strength distribution of the wireless signal received from the antenna in different directions in space.
  • One beam may include one or more antenna ports, which are used to transmit data channels, control channels, reference signals, etc., for example, in the embodiment of the present application, they may be used to transmit random access signals.
  • One or more antenna ports forming a beam can also be regarded as a set of antenna ports.
  • Beams generally correspond to resources.
  • each beam corresponds to a resource.
  • a synchronization signal block (SSB) resource corresponds to an SSB beam; for another example, a "channel state information-reference signal (CSI-RS) resource" corresponds to A "CSI-RS beam”.
  • CSI-RS channel state information-reference signal
  • a beam can be uniquely identified by its index.
  • 5G NR introduces synchronization system/physical broadcast channel block (SS/PBCH block), which can be referred to as SSB for short.
  • SS/PBCH block synchronization system/physical broadcast channel block
  • the network device sends multiple SSBs in a scanning manner in one cycle, and different SSBs correspond to different spatial directions (for example, corresponding to different beams).
  • the number of SSBs is configured by the network device to the terminal through system messages.
  • NR supports three SSB numbers: 4, 8, and 64. Generally, the higher the frequency, the greater the number of SSBs, and the narrower the beam used to send SSBs.
  • the terminal measures the reference signal receiving power (RSRP) of the SSB sent by the network device.
  • RSRP reference signal receiving power
  • the terminal can select the SSB.
  • the mapped random access resources perform a random access (random access channel, RACH) process.
  • mobility management, beam management and other functions can be realized through CSI-RS.
  • network equipment such as base stations
  • the terminal obtains the weights of simulated beamforming by scanning CSI-RS. .
  • One SSB beam can correspond to multiple CSI-RS beams.
  • one SSB beam corresponds to four CSI-RS beams.
  • the random access process is introduced below.
  • Scenario 1 The terminal’s initial radio resource control (RRC) connection is established. When the terminal changes from idle state to connected state, the terminal will initiate random access.
  • RRC radio resource control
  • Scenario 2 Terminal RRC connection reestablishment.
  • the wireless connection fails and the terminal needs to re-establish the RRC connection, it will initiate random access.
  • Scenario 3 When the terminal performs cell switching, the terminal will initiate random access in the target cell.
  • Scenario 4 Downlink data arrives.
  • the network device When the terminal is in the connected state and the network device has downlink data that needs to be transmitted to the terminal, but it is found that the terminal is out of synchronization in the uplink, the network device will control the terminal to initiate random access. Among them, the network device maintains an uplink timer. If the uplink timer times out and the network device does not receive a response signal from the terminal, the network device considers that the terminal is out of sync in the uplink.
  • Scenario 5 Uplink data arrives. When the terminal is in the connected state and has uplink data that needs to be transmitted to the network device, but it is found that the uplink is out of sync, the terminal will initiate random access. Among them, the terminal maintains an uplink timer. If the uplink timer times out and the terminal does not receive a command to adjust the network device value (such as time advance TA (timing advance)), the terminal considers the uplink to be out of sync.
  • TA timing advance
  • Figure 2 shows a traditional four-step random access method (4-step RA).
  • the network device configures the terminal, including but not limited to configuration: preamble sequence set and physical random access channel (PRACH) time and frequency for sending message 1 (Msg1) resource.
  • PRACH physical random access channel
  • the four-step random access method includes the following steps:
  • the terminal sends message 1 (Msg1) to the network device on the PRACH time-frequency resource.
  • the network device receives message 1 from the terminal on the PRACH resource.
  • Message 1 contains a random access preamble, which includes a preamble sequence (also called a preamble) selected by the terminal from the preamble sequence set.
  • the network device sends message 2 (Msg2) to the terminal according to message 1.
  • the terminal receives the message from Network device messages 2.
  • the message 2 includes the identifier of the preamble sequence (random access preamble identifier, RAPID) received by the network device and the uplink grant used to schedule the message 3, such as the physical uplink shared channel (PUSCH) used to schedule the message 3. )resource.
  • RAPID random access preamble identifier
  • PUSCH physical uplink shared channel
  • the message 2 includes a random access response (RAR).
  • RAR random access response
  • the network device determines the wireless network temporary identifier (radio network temporary identifier, RNTI) used for scrambling DCI based on the time and frequency resources of message 1, for example, it can be a random access radio network temporary identifier (RA-RNTI). ).
  • RNTI wireless network temporary identifier
  • the network device carries the received preamble identifier and the uplink authorization used for scheduling message 3 in message 2 and sends it to the terminal.
  • Message 2 is carried in the physical downlink shared channel (PDSCH), and the scrambling code sequence used to scramble the PDSCH can be generated based on the RA-RNTI.
  • the terminal first determines the RA-RNTI using the same method, uses the RA-RNTI to descramble the received DCI, receives the PDSCH according to the received DCI, and obtains message 2.
  • the terminal sends message 3 (Msg3) to the network device on the resources allocated by the network device, and accordingly, the network device receives message 3 from the terminal.
  • Msg3 message 3
  • the terminal sends message 3 to the network device on the PUSCH resources allocated by the network device.
  • the terminal parses the identifier of the preamble sequence sent by itself in the received message 2, it is considered that the preamble sequence sent by itself is received by the network device.
  • the terminal may send message 3 according to the uplink authorization carried in message 2.
  • the message 3 includes a demodulation reference signal (DMRS) and random access data, such as control plane data and/or user plane data.
  • DMRS demodulation reference signal
  • the random access data includes the identification of the terminal (UE- ID).
  • the network device sends message 4 (Msg4) to the terminal.
  • the terminal receives message 4 from the network device.
  • Message 4 can also be understood as a contention resolution message.
  • the network device demodulates message 3 sent by one of the terminals and sends message 4 to the terminal.
  • the message 4 includes the demodulated The identification of the terminal.
  • This message 4 is used to indicate the terminal that has completed the random access process.
  • message 4 may carry control plane data and/or user plane data.
  • All terminals that send message 3 will receive message 4.
  • the terminal will match the terminal identifier in message 4 with its own identifier.
  • the terminal that successfully matches is the terminal that has successfully accessed randomly.
  • the terminal If the terminal does not receive message 2 corresponding to itself from the network device in a preset time window (such as the RAR window), it can resend message 1.
  • a PRACH time-frequency resource can be called a physical random access channel opportunity (PRACH RO, where RO is the English abbreviation of Occasion, which is the opportunity).
  • PRACH RO physical random access channel opportunity
  • PRACH RO there is a mapping relationship between PRACH RO and SSB resources.
  • the PRACH ROs mapped to different SSB resources may be time-divided. For example, as shown in Figure 3, SSB1 is mapped to PRACH RO1, and SSB2 is mapped to PRACH RO2.
  • PRACH repetition is used to improve uplink coverage.
  • the number of repetitions varies according to different levels. For example, as shown in Table 1, level 1 means that PRACH has no repetitions, level 2 corresponds to the number of repetitions up to 4 times, and level 3 corresponds to the number of repetitions up to 32 times.
  • Table 1 Number of PRACH repetitions corresponding to each level
  • embodiments of the present application provide a communication method and a device and system for implementing the method, so as to enhance uplink coverage in the random access process.
  • the communication method provided by the embodiment of this application can be applied to the fourth generation (4th generation, 4G) communication system, such as long term evolution (long term evolution, LTE), and can also be applied to the fifth generation (5th generation, 5G) communication system.
  • 4G long term evolution
  • 5th generation, 5G 5th generation
  • 5G new radio NR
  • 6G sixth generation (6th generation, 6G) communication system.
  • FIG 4 is a schematic flow chart of a communication method provided by an embodiment of the present application.
  • the process can include the following steps:
  • the network device (such as the base station) determines the configuration information.
  • the configuration information is used to indicate N associated resources, where N is a positive integer greater than or equal to 2.
  • the N associated resources include a first resource and a second resource, the first resource corresponds to a first PRACH resource, and the second resource corresponds to a second PRACH resource. It can be understood that PRACH resources are also called PRACH RO.
  • the mapping relationship between any one of the N associated resources and the PRACH resource may be a one-to-one relationship, that is, one resource corresponds to one PRACH resource.
  • the first resource among the N associated resources corresponds to the first PRACH resource.
  • the mapping relationship between any one of the N associated resources and the PRACH resources may also be a one-to-many relationship, that is, one resource corresponds to multiple PRACH resources, such as , the first resource among the N associated resources not only corresponds to the first PRACH resource but also corresponds to the third PRACH resource.
  • the first resource may also correspond to a larger number of PRACH resources, such as a fourth PRACH resource, etc., which will not be listed here.
  • the N associated resources may not only include the One resource and the second resource may also include more resources.
  • the PRACH resources corresponding to the N associated resources may not only include the first PRACH resource and the second PRACH resource, but may also include More PRACH resources, for example, the N associated resources correspond to M (M is a positive integer greater than 2) PRACH resources.
  • M is a positive integer greater than 2 PRACH resources.
  • the N associated resources may include N associated SSB resources, such as For example, N associated SSB beams are included.
  • Figure 5 shows a schematic diagram of a transmission method using three SSB beams as associated beams.
  • Tx SSB 1, Tx SSB 2 and Tx SSB 3 respectively represent three different beams for transmitting SSB.
  • the three Tx SSB beams are configured to be associated on the base station side; on the terminal side, the terminal sends the preamble sequence on the PRACH resources corresponding to the three associated Tx SSB beams.
  • the terminal receives the preamble sequence according to the three SSB reception beams corresponding to the three associated Tx SSB beams (Rx SSB 1, Rx SSB 2 and Rx SSB 3 as shown in the figure).
  • the parameters of the receive beam on the PRACH are determined by the parameters of the previous transmit beam.
  • the signal sent by SSB1 indicates that the signal is received on a certain resource.
  • the receive beam used is determined based on the transmit beam of SSB1. It can be understood that when the terminal sends signals on the above resources, it means that the terminal defaults that the receiving beam on the resource is associated with the transmitting beam of SSB1.
  • the SSB receiving beam can be determined based on the SSB transmitting beam.
  • Rx SSB1 is determined based on Tx SSB1
  • Rx SSB2 is determined based on Tx SSB2
  • Rx SSB3 is determined based on Tx SSB3.
  • the "determination" behavior here belongs to the specific implementation.
  • the N associated resources may include N associated CSI-RS resources, such as N associated CSI-RS beams.
  • the N associated CSI-RS resources may include N CSI-RS resources corresponding to one SSB resource, and the N CSI-RS resources may be all or all of all CSI-RS resources corresponding to the SSB. part.
  • the four CSI-RS resources are represented as CSI-RS 1, CSI-RS 2, CSI-RS 3 and CSI-RS 4 respectively.
  • the SSB corresponding CSI-RS resources are configured as associated CSI-RS resources, which can include the following situations:
  • the four CSI-RS resources (including CSI-RS 1, CSI-RS 2, CSI-RS 3 and CSI-RS 4) corresponding to the SSB can be configured as 4 associated CSI-RS resources.
  • FIG. 6 shows a schematic diagram of a transmission method in which part of the CSI-RS beam corresponding to one SSB beam is used as an associated beam.
  • the SSB beam corresponds to 4 CSI-RS beams, which are represented as CSI-RS 1, CSI-RS 2, CSI-RS 3 and CSI-RS 4 respectively.
  • the four associated Tx CSI-RS beams configured on the base station side are transmitting beams.
  • the terminal receives four CSI-RS beams corresponding to the four associated Tx CSI-RS beams (as shown in the figure) Rx CSI-RS1 ⁇ 4 shown in , the preamble sequence is sent on the PRACH RO corresponding to the four CSI-RS receive beams.
  • the parameters of the receiving beam on the PRACH are determined by the parameters of the previously transmitted beam. For example, the signal sent by CSI-RS2 indicates that the signal is received on a certain resource. On this resource, the receiving beam used is based on the transmission of CSI-RS2. Beam determined.
  • the CSI-RS receiving beam can be determined based on the CSI-RS transmitting beam.
  • Rx CSI-RS1 is determined based on Tx CSI-RS1
  • Rx CSI-RS2 is determined based on Tx CSI-RS2
  • Rx CSI-RS3 is determined based on Tx CSI-RS3.
  • the "determined" behavior belongs to the specific implementation.
  • 3 of the 4 CSI-RS resources corresponding to the SSB can be configured as three associated CSI-RS resources.
  • three associated CSI-RS resources may include CSI-RS 1, CSI-RS 2, CSI-RS 3, or CSI-RS 1, CSI-RS 2, CSI-RS 4, or CSI-RS 1 , CSI-RS 3, CSI-RS 4, or including CSI-RS 2, CSI-RS 3, CSI-RS 4.
  • Two of the four CSI-RS resources corresponding to the SSB can be configured as two associated CSI-RS resources.
  • two associated CSI-RS resources may include CSI-RS 1 and CSI-RS 2, or CSI-RS 1 and CSI-RS 3, or CSI-RS 1 and CSI-RS 4, or CSI-RS RS 2, CSI-RS 3, or These include CSI-RS 2 and CSI-RS 4, or CSI-RS 3 and CSI-RS 4.
  • the N associated CSI resources may include CSI-RS resources respectively corresponding to multiple (at least two) SSB resources.
  • the N associated CSI resources may include one or more CSI-RS resources corresponding to the first SSB resource, and one or more CSI-RS resources corresponding to the second SSB.
  • the N associated resources may include both SSB resources and CSI-RS resources.
  • the SSB resources corresponding to the N2 CSI-RS resources and the N1 SSB resources are different SSB resources.
  • the N associated resources may include SSB resource 1, and also include CSI-RS resource 1, CSI-RS resource 2, and CSI-RS resource 3 corresponding to SSB resource 2; for another example, the N associated resources It may include SSB resource 1 and SSB resource 2, and also includes CSI-RS resource 1 and CSI-RS resource 2 corresponding to SSB resource 3.
  • the PRACH resources may include time domain resources of the PRACH and frequency domain resources of the PRACH.
  • the first PRACH resource may include a first time domain resource and a first frequency domain resource
  • the second PRACH resource may include a second time domain resource and a first frequency domain resource. Second frequency domain resources.
  • the time domain resources of the PRACH may include symbols, time slots, etc. occupied by the PRACH.
  • the time domain resources of the PRACH may include subcarriers occupied by the PRACH, physical resource blocks (physical resource blocks, PRBs), etc.
  • the multiple PRACH resources corresponding to the N associated resources may be frequency division multiplexed, may be time division multiplexed, or may be frequency division multiplexed and time division multiplexed.
  • the time-frequency resources of the first PRACH resource and the second PRACH resource may include the following situations:
  • Case 1 The first time domain resource position of the first PRACH resource does not overlap with the second time domain resource position of the second PRACH resource, and the first frequency domain position of the first PRACH resource does not overlap with the first frequency domain position of the second PRACH resource.
  • the second frequency domain positions of the two PRACH resources do not overlap. That is to say, the first PRACH resource and the second PRACH resource are both time division multiplexed and frequency division multiplexed.
  • Case 2 The first time domain resource position of the first PRACH resource does not overlap with the second time domain resource position of the second PRACH resource, and the first frequency domain position of the first PRACH resource does not overlap with the second time domain resource position of the first PRACH resource.
  • the second frequency domain position of the PRACH resources is the same. That is to say, the first PRACH resource and the second PRACH resource are time-division multiplexed.
  • Case 3 The first time domain resource position of the first PRACH resource is the same as the second time domain resource position of the second PRACH resource, and the first frequency domain position of the first PRACH resource is the same as the second time domain resource position. There is no overlap in the second frequency domain position of the PRACH resources. That is to say, the first PRACH resource and the second PRACH resource are frequency division multiplexed.
  • the PRACH resources may also include code domain resources of the PRACH.
  • the first PRACH resource may also include a first code domain resource
  • the second PRACH resource may further include a second code domain resource.
  • the code domain resource of the PRACH may include a preamble sequence (preamble).
  • the first code domain resource corresponding to the first PRACH resource and the code domain resource corresponding to the second PRACH resource belong to the same code domain resource set.
  • the first PRACH resource and the second PRACH resource The resources correspond to the same code domain resource set.
  • the code domain resource as a preamble sequence (preamble) as an example
  • the first PRACH and the second PRACH correspond to the same preamble sequence set
  • the preamble sequence set includes at least one preamble sequence.
  • the preamble The column set may be a subset of the preamble sequence and is independent of preamble sequences used by other access methods in order to avoid mutual interference with preamble sequences used by other access methods.
  • the index values of the leading sequences in the leading sequence set are consecutive.
  • the terminal may select a preamble sequence from the preamble sequence set and send the selected preamble sequence on the first PRACH resource and the second PRACH resource.
  • the network device may configure a preamble sequence group, and the preamble sequences included in the preamble sequence group are a subset of the preamble sequence set.
  • the M PRACH resources are all associated with the preamble sequence group. That is to say, the code domain resources of the M PRACH resources are within the preamble sequence group. leader sequence.
  • the terminal can select a preamble sequence from the preamble sequence group according to the preamble sequence group associated with the M PRACH resources, and can send the selected preamble sequence on the time-frequency resources of the M PRACH resources. Since the N associated resources correspond to the M PRACH resources, sending the selected preamble sequence on the M PRACH resources is equivalent to using the N associated resources to send the selected preamble sequence.
  • the configuration information includes indication information of the first code domain resource of the first PRACH resource, for example, the configuration The information includes indication information of the preamble sequence associated with the first PRACH resource, used to indicate one or more preamble sequences associated with the first PRACH resource. It can be understood that for other PRACH resources corresponding to the N associated resources (such as the second PRACH resource), the configuration information may also include indication information of code domain resources of the other PRACH resources.
  • the indication information of the first code domain resource of the first PRACH resource includes an index of the first code domain resource.
  • the configuration information includes the index of the preamble sequence in the preamble sequence group associated with the first PRACH resource.
  • the indication information of the first code domain resource of the first PRACH resource includes an index range of the first code domain resource.
  • the configuration information includes the index range of the preamble sequence in the preamble sequence group associated with the first PRACH resource.
  • the index range is indicated by the index of the starting preamble sequence and the index of the ending preamble sequence; in another example, the index range is indicated by the index of the starting preamble sequence and the number of preamble sequences.
  • the configuration information does not directly indicate the index or index range of the preamble sequence in the preamble sequence group, but indirectly indicates it through other information.
  • the terminal can determine or calculate based on the other information. Obtain the index or index range of the preamble sequence in the preamble sequence group.
  • the configuration information when the N associated resources include SSB resources, the configuration information includes an index of the SSB resource. For example, if the N associated resources include N SSB resources, the configuration information includes the index of the N SSB resources, so that the terminal can determine the corresponding N associated SSB beams according to the index of the N SSB resources. .
  • the configuration information when the N associated resources include SSB resources, includes PRACH resource location information corresponding to the SSB resources. For example, if the N associated resources include N SSB resources, the configuration information includes the resource location information of the M PRACH resources corresponding to the N SSB resources, so that the terminal can determine based on the resource locations of the M PRACH resources.
  • indicating the N associated SSB beams through PRACH resource location information may include: The following situations:
  • the configuration information includes the time-frequency position of each PRACH RO among the N PRACH ROs. Since each PRACH RO among the N PRACH ROs corresponds to an SSB beam, this method can indicate that the N SSB beams are associated.
  • Case 2 The configuration information includes the time domain range and the first frequency domain position of N PRACH ROs. In this way, it can be indicated that the time domain is within the time domain range and the frequency domain is associated with the SSB beam corresponding to the PRACH RO at the first frequency domain position.
  • the configuration information contains the frequency domain location information of PRACH RO 1, it can indicate PRACH RO 1, PRACH RO 3, PRACH RO 5.
  • PRACH RO 7 is associated, that is, the corresponding SSB beam 1, SSB beam 3, SSB beam 5, and SSB beam 7 are associated beams.
  • the terminal can determine the frequency domain position of PRACH RO 1 based on the configuration information, and determine the SSB beam corresponding to the PRACH RO at the frequency domain position.
  • the configuration information may also include the preamble sequence index range 40 to 50, and the associated PRACH resources corresponding to SSB beam 1, SSB beam 3, SSB beam 5, and SSB beam 7, which are associated with the preamble sequence index range 40 to 50. .
  • Case 3 The configuration information includes the time domain starting position and the first frequency domain position of N PRACH ROs. In this way, it can be indicated that the SSB beam corresponding to the PRACH RO whose time domain is at the time domain starting position and after the time domain starting position and whose frequency domain is the first frequency domain position is associated.
  • the configuration information includes the time domain position of a certain PRACH RO within the access resource cycle.
  • the time domain is at and after the time domain position of the PRACH RO, and the frequency domain position is associated with the SSB beam corresponding to the PRACH RO.
  • the PRACH RO may be the first PRACH RO in the access resource period.
  • the length of an access resource cycle may be 160 milliseconds, and the 160 milliseconds may include multiple PRACH ROs.
  • Each PRACH RO has a different label for distinction.
  • the configuration information includes the frequency domain position of a certain PRACH RO within the access resource period.
  • the SSB beam corresponding to the frequency domain position corresponding to the PRACH RO is associated with the time domain range of the access resource cycle and the frequency domain position.
  • the PRACH RO may be the first PRACH RO in the access resource period.
  • the configuration information includes the time domain position and frequency domain position of a certain PRACH RO within the access resource period.
  • the time domain is at and after the time domain position
  • the frequency domain position is associated with the SSB beam corresponding to the PRACH RO at the frequency domain position.
  • the PRACH RO may be the first PRACH RO in the access resource period.
  • the configuration information when the N associated resources include CSI-RS resources, the configuration information includes an index of the CSI-RS resource. For example, if the N associated resources include N CSI-RS resources, the configuration information includes the indexes of the N CSI-RS resources, so that the terminal can determine the corresponding N CSI-RS resources based on the indexes. N associated SSB beams.
  • the configuration information includes indication information
  • the indication information is used to indicate a combination method of CSI-RS resources
  • the terminal can obtain the index of the CSI-RS resource corresponding to each PRACH resource according to the indication information. Considering that the number of CSI-RS resources is large (for example, up to 32), correspondingly, there will be more combinations of CSI-RS resources and PRACH resources. Instruction information is used to indicate the combination of associated CSI-RS resources. , compared with including the index of CSI-RS resources in the configuration information, the signaling overhead can be reduced.
  • each of the four PRACH ROs can correspond to one of the four CSI-RS beams, or not correspond to any beam, as an example.
  • the four CSI beams are CSI-RS1 and CSI-RS2 respectively.
  • CSI-RS3, CSI-RS4 the four PRACH ROs are RO1_1, RO2_1, RO3_1, and RO4_1 respectively.
  • there are a total of 120 possible combinations of CSI-RS beams and PRACH ROs (5! 120).
  • Each combination method can be indicated by a value of the above indication information.
  • each combination method can be indicated by a value of the above indication information.
  • the terminal can determine the index of the CSI-RS beam corresponding to each PRACH RO according to the value of the indication information. For example, according to the value of the indication information, determine the beam on PRACH RO1_1 to be CSI-RS1 and the beam on PRACH RO2_1 to be CSI. -The beams on RS2 and PRACH RO3_1 are CSI-RS3, and the beams on PRACH RO4_1 are CSI-RS4.
  • the configuration information includes configuration information of three groups of associated CSI-RS beams (respectively referred to as associated beam group 1, associated beam group 2, and associated beam group 3), where the indication information 1 It is used to indicate the combination mode of the CSI-RS beams in the associated beam group 1, the indication information 2 is used to indicate the combination mode of the CSI-RS beams in the associated beam group 2, and the indication information 3 is used to indicate the CSI in the associated beam group 3. -How RS beams are combined.
  • the combination of the CSI-RS beams indicated by the indication information 1 is: the 4 PRACH ROs corresponding to the associated 4 CSI-RS beams correspond to the following beams in sequence: CSI-RS beam 1, CSI-RS beam 2, CSI-RS beam 3. CSI-RS beam 4.
  • the terminal can determine that the four PRACH ROs include PRACH RO1_1, PRACH RO2_1, PRACH RO3_1, and PRACH RO4_1 based on the time domain and/or frequency domain location information of the PRACH RO, and determine the corresponding CSI-RS beams 1 and 1 of PRACH RO1_1 based on the indication information.
  • PRACH RO2_1 corresponds to CSI-RS beam 2
  • PRACH RO3_1 corresponds to CSI-RS beam 3
  • PRACH RO4_1 corresponds to CSI-RS beam 4.
  • the combination method of the CSI-RS beams indicated by the indication information 2 is: the two PRACH ROs corresponding to the two associated CSI-RS beams correspond to the following beams in sequence: CSI-RS beam 2, CSI-RS beam 3.
  • the terminal can determine that the two PRACH ROs include PRACH RO2_1 and PRACH RO2_2 based on the time domain and/or frequency domain location information of the PRACH RO, and determine that PRACH RO2_1 corresponds to CSI-RS beam 2 and PRACH RO2_2 corresponds to CSI-RS based on the indication information.
  • the combination method of the CSI-RS beams indicated by the indication information 3 is: the two PRACH ROs corresponding to the two associated CSI-RS beams correspond to the following beams in sequence: CSI-RS beam 4, CSI-RS beam 1.
  • the terminal can determine that the two PRACH ROs include PRACH RO2_3 and PRACH RO2_4 based on the time domain and/or frequency domain location information of the PRACH RO, and determine that PRACH RO2_3 corresponds to CSI-RS beam 4 and PRACH RO2_4 corresponds to CSI-RS based on the indication information.
  • the configuration information may also include a preamble sequence index range.
  • the preamble sequence index range is 45 to 50, then the index range of the preamble sequence corresponding to each associated beam group is 45 to 50, and the terminal can select from this range.
  • a preamble sequence is sent on the PRACH RO corresponding to one of the associated beam groups.
  • the terminal may send the preamble sequence with index 43 on PRACH RO1_1, PRACH RO2_1, PRACH RO3_1, and PRACH RO4_1 corresponding to associated beam group 1.
  • S402 The network device sends the configuration information.
  • the network device may send the configuration information through a broadcast channel.
  • the network device may send the configuration information in a system information block (SIB) or other broadcast message.
  • SIB system information block
  • the terminal can receive the configuration information sent by the network device through the broadcast channel, and obtain the associated N resources according to the configuration information.
  • the configuration information indicates N associated resources.
  • the first resource among the N associated resources corresponds to the first PRACH resource, and the second resource corresponds to the second PRACH resource. Since the PRACH resource It is used for the terminal to transmit uplink signals during the random access process. Therefore, by configuring multiple associated resources, uplink signals can be sent on multiple PRACH resources corresponding to the multiple associated resources to enhance the uplink signal during the random access process. cover.
  • the process shown in Figure 4 above may also include the following steps:
  • the network device receives signals on the PRACH resources corresponding to the N associated resources.
  • the signal is a random access signal, such as message 1 (Msg1) in four-step random access (4-step RA).
  • the terminal can determine N associated resources based on the received configuration information, and send random access signals on the PRACH resources corresponding to the N associated resources.
  • the network device can The random access signal sent by the terminal is received on the PRACH resource corresponding to the N associated resources.
  • the network device can receive the first signal sent by the terminal on the first PRACH resource, and in the Receive the second signal sent by the terminal on the second PRACH resource. If the terminal sends signals on more PRACH resources (the PRACH resources are PRACH resources corresponding to the N associated resources), the network device can receive the signal sent by the terminal on each of the PRACH resources. For example, if the first resource among the associated N resources also corresponds to a third PRACH resource, the terminal may also send a third signal on the third PRACH resource. Correspondingly, the network device may also receive the third signal sent by the terminal on the third PRACH resource.
  • the process shown in Figure 4 above may also include the following steps:
  • the network device Based on the received at least two signals sent by the terminal, the network device combines the at least two signals to obtain a gain after the signal combination.
  • the network device receives the first signal on the first PRACH resource corresponding to the first resource.
  • the second signal is received on the second PRACH resource corresponding to the second resource, and the first signal and the second signal are combined to obtain the advantages of combining the received signals on the associated resources. gain.
  • the terminal can send random access signals on multiple PRACH ROs corresponding to the N associated SSB beams.
  • the network device can receive the random access signals sent by the terminal on the multiple PRACH ROs, and combine the random access signals sent by the terminal received on the multiple PRACH resources.
  • the base station may perform random access signals based on the same preamble sequence among the random access signals received on the multiple PRACH resources. merge.
  • FIG. 9 is a schematic diagram of a communication method implemented on the terminal side provided by an embodiment of the present application.
  • the method may include the following steps:
  • S901 The terminal receives configuration information from the network device.
  • the configuration information is used to indicate N associated resources, the N associated resources include first resources and second resources; the first resource corresponds to the first PRACH resource, and the second resource corresponds to the second physical randomness Access channel PRACH resource; N is a positive integer greater than or equal to 2.
  • S902 The terminal sends a first signal on the first PRACH resource and a second signal on the second PRACH resource.
  • the first signal and the second signal are random access signals, such as message 1 (Msg1) in four-step random access (4-step RA).
  • the terminal can determine N associated resources based on the received configuration information, and send random access signals on the PRACH resources corresponding to the N associated resources.
  • the configuration information includes a first code domain resource range of the first PRACH resource and a second code domain resource range corresponding to the second PRACH resource.
  • the first code domain resource range and the The second code domain resource range is the same, such as the same preamble sequence group.
  • the terminal selects a preamble sequence from the preamble sequence group, and sends a random access signal on the first PRACH resource and the second PRACH resource according to the preamble sequence.
  • the terminal accesses multiple associated resources (beams) indicated by the configuration information, and the preamble sequence used is a sequence within the preamble sequence group.
  • the terminal uses the preamble sequence in the above-mentioned separate group to send signals, and the preamble sequences sent on each resource are related to each other. For example, if the preamble sequence range corresponding to the associated beam group obtained through the S901 terminal is 40 to 45, then the access request (Msg1) will be sent using the sequence in the preamble sequence range 40 to 45 on the PRACH RO corresponding to the associated beam group.
  • the preamble sequence 43 is randomly selected from the preamble sequence group, and the preamble sequence 43 is used to send access requests on the above-mentioned PRACH RO.
  • the terminal randomly selects sequences from the preamble sequence group to avoid conflicts with sequences selected by other terminals.
  • the terminal sends the first signal on the first PRACH resource, and/or sends the first signal on the second PRACH resource. Two signals.
  • the first resource may also correspond to a third PRACH resource.
  • the process may also include the following step: the terminal sends a third signal on the third PRACH resource, and an example of the third signal is a random access signal.
  • the terminal may use the following method to determine whether the N associated resources meet the first requirement: obtain at least two signal strength values, and the at least two signal strength values are used to indicate the The signal strength of the signals received on the N associated resources is determined to meet the first requirement based on the at least two signal strength values and the set threshold.
  • the method of obtaining at least two signal strength values may include: receiving signals sent by network devices on the N associated resources, and measuring the signal strength of the received signals.
  • the terminal can The signal sent by the network device is received on the receiving resource (beam) corresponding to the sending resource (beam). Therefore, the "signal strength of the signals received on the N associated resources" in the above process can be understood as: the N The signal strength of the signal received on the receiving resource corresponding to the associated sending resource.
  • the terminal determines that the N associated resources meet the first requirement.
  • the signal strength value may be RSRP or a received signal strength indication (received signal strength indicator). strength indicator, RSSI).
  • the signal strength value is used to indicate equivalent signal strength.
  • the signal strength value is determined based on the RSRP of signals received on the N associated resources and the number of signal repetitions.
  • the terminal can obtain the RSRP of the signal received on the N associated resources, and determine the equivalent signal strength of the signal received on the N associated resources based on the RSRP received on each resource and the number of signal repetitions.
  • the method for determining the equivalent signal strength of the N signals may include the following method 1 or method 2:
  • Method 1 The number of repetitions of the N received signals on the N associated resources (beams) is a single time.
  • the equivalent signal strength of the N received signals satisfies the following formula (1):
  • equivalent RSRP is the equivalent signal strength of N signals received on the associated N resources
  • RSRP i is the received signal strength on the i-th resource (beam) among the N resources (beams).
  • Method 2 The number of repetitions of the N received signals on the N associated resources (beams) is greater than 1. In this case, the equivalent signal strength of the N received signals satisfies the following formula (2):
  • equivalent RSRP is the equivalent signal strength of N signals received on the associated N resources
  • RSRP i is the received signal strength on the i-th resource (beam) among the N resources (beams).
  • RSRP,K i represents the number of repetitions of the i-th resource (beam). Since the reference signal on one resource (beam) may correspond to multiple uplink PRACH ROs, multiple uplink PRACH ROs are calculated into the equivalent RSRP.
  • the RSRP of the terminal receiving SSB1 is -60dBm, and there is only one corresponding PRACH RO.
  • the sequence in which the PRACH length is doubled can be interpreted as an increase in the "number of repetitions".
  • the number of PRACH ROs can reflect the duration of the PRACH RO from one side. If the duration of some PRACH ROs is multiple times that of other PRACH ROs, this needs to be calculated into the equivalent RSRP. For example, in the above example, there are 4 PRACH ROs corresponding to receiving SSB2. These 4 PRACH ROs can bring a gain of 6dB.
  • the resources configured by the network device may include, in addition to the above N associated resources (such as associated N beams), one or more other resources (beams) that have no associated relationship.
  • the terminal can obtain the received signal strength values on N associated resources and the received signal strength values on resources with no associated relationship, and then determine which resource or resources meet the requirements based on the set criteria.
  • Send signals (such as random access signals) on resources that meet the requirements.
  • a signal is sent on the PRACH resources corresponding to the N associated resources.
  • the PRACH resource corresponding to the resource that meets the requirements is sent.
  • Send signal Send signals on resources (beams) above a set threshold.
  • a preamble sequence is randomly selected from the preamble sequence group, and the PRACH resource corresponding to the N associated resources is The signal is sent (i.e., the preamble sequence is sent) to avoid collision with other terminals.
  • the signal is sent on the PRACH resource corresponding to the resource.
  • the base station is configured with SSB beam, CSI-RS beam 1, CSI-RS beam 2, CSI-RS beam 3, CSI-RS beam 4, where CSI-RS beam 3 and CSI-RS Beam 4 is associated.
  • the corresponding relationship between each beam and PRACH RO can be shown in the figure.
  • the equivalent signal strength satisfies the following formula:
  • Equivalent RSRP measured RSRP_1 (dBm) + 10log 10 (number of repetitions) (dB).
  • the equivalent signal strength satisfies the above formula (1).
  • the terminal receives the CSI-RS signal on PRACH RO2_4.
  • the number of repetitions of the signal is 1.
  • the equivalent signal strength RSRP_csi1’ corresponding to CSI-RS beam 1 is:
  • RSRP_csi1’ RSRP_csi1.
  • RSRP_csi1 is the RSRP measured on CSI-RS beam 1.
  • the terminal receives the CSI-RS signal on PRACH RO1_3 and PRACH RO1_4.
  • the number of repetitions of the signal is 2.
  • the equivalent signal strength RSRP_csi2’ corresponding to CSI-RS beam 2 is:
  • RSRP_csi2’ RSRP_csi2+3dB.
  • RSRP_csi2 is the signal strength measured on CSI-RS beam 2.
  • the terminal receives the CSI-RS signal on PRACH RO2_2 and PRACH RO2_3.
  • the number of repetitions of the signal is 1.
  • RSRP_csi3 is the RSRP measured on CSI-RS beam 3
  • RSRP_csi4 is the RSRP measured on CSI-RS beam 4
  • w is the abbreviation of Watt, that is, the unit of power is watt.
  • the terminal compares the equivalent signal strength of each PRACH RO, selects the PRACH RO where the beam whose equivalent signal strength is greater than the threshold is located, and initiates random access (such as sending Msg1) on the PRACH RO. For example, if the equivalent signal strength of each resource is: RSRP_csi2'>RSRP_ssb'>threshold>RSRP_csi3/4'>RSRP_csi1', the terminal initiates random access on the PRACH RO corresponding to RSRP_csi2' or RSRP_ssb' which is higher than the threshold. , or initiate random access (such as sending Msg1) on the PRACH RO corresponding to CSI-RS2 with the highest equivalent signal strength.
  • the gain of PRACH access resources can be harvested.
  • inventions of the present application also provide a network device.
  • the network device can execute the process performed by the network device in Figure 4.
  • the network device may include: a processing unit 1101, a receiving unit 1102, and a sending unit 1103.
  • the receiving unit 1102 and the sending unit 1103 are respectively coupled to the processing unit 1101.
  • the receiving unit 1102 is used to determine configuration information.
  • the configuration information is used to indicate N associated resources.
  • the N associated resources include first resources and second resources; the first resource corresponds to the first physical random access.
  • the sending unit 1103 is used to send the configuration information.
  • the receiving unit 1102 is configured to: receive the first signal sent by the terminal on the first PRACH resource; receive the second signal sent by the terminal on the second PRACH resource.
  • the processing unit 1101 is further configured to: combine the at least two signals based on the at least two received signals from the terminal.
  • the above network device can implement the method steps in the above method embodiment and can achieve the same technical effect.
  • the parts and beneficial effects in this embodiment that are the same as those in the method embodiment will not be described in detail here.
  • inventions of the present application also provide a terminal.
  • the terminal can execute the process executed by the terminal in Figure 4 or Figure 9.
  • the network device may include: a processing unit 1201, a receiving unit 1202, and a sending unit 1203.
  • the receiving unit 1202 and the sending unit 1203 are respectively coupled to the processing unit 1201.
  • the receiving unit 1202 is configured to receive configuration information from a network device.
  • the configuration information is used to indicate N associated resources.
  • the N associated resources include first resources and second resources; the first resource corresponds to the first resource. Physical random access channel PRACH resource, the second resource corresponds to the second PRACH resource; N is a positive integer greater than or equal to 2.
  • the sending unit 1203 is configured to send a first signal on the first PRACH resource and send a second signal on the second PRACH resource.
  • the sending unit 1203 is specifically configured to: if the N associated resources meet the first requirement, the terminal sends the first signal on the first PRACH resource.
  • the processing unit 1201 is also configured to: obtain at least two signal strength values, the at least two signal strength values are used to indicate the signal strength of signals received on the N associated resources; according to the at least two signal strength values signal strength values and set thresholds to determine that the N associated resources meet the first requirement.
  • the signal strength value is used to indicate equivalent signal strength; the signal strength value is determined based on the RSRP of signals received on the N associated resources and the number of signal repetitions.
  • the above-mentioned terminal can implement the method steps in the above-mentioned method embodiments and can achieve the same technical effects.
  • the parts and beneficial effects in this embodiment that are the same as those in the method embodiments will not be described in detail here.
  • FIG. 13 only shows the structure required for the communication device 1300 to perform the method shown in this application. This application does not limit the communication device to be equipped with more components.
  • the communication device 1300 may be used to perform the steps performed by the network device or terminal in the above method embodiment.
  • the communication device 1300 may include a communication interface 1301, a memory 1302 and a processor 1303.
  • the communication interface 1301 can be used for communication by a communication device, such as for sending or receiving signals.
  • the memory 1302 is coupled to the processor 1303 and can be used to store programs and data necessary for the communication device 1300 to implement various functions.
  • the processor 1303 is configured to support the communication device 1300 to perform the processing functions performed by the network device or terminal in the above method.
  • the above memory 1302 and processor 1303 can be integrated into one body or independent of each other.
  • the communication interface 1301 may be a communication port, such as a communication port (or interface) used for communication between network elements.
  • the communication interface 1301 may also be called a transceiver unit or a communication unit.
  • the processor 1303 can be implemented by a processing chip or a processing circuit.
  • the communication interface 1301 can receive or send information in a wireless or wired manner.
  • the communication device may include a processor, and the processor calls an external transceiver and/or memory to implement the above functions or steps or operations.
  • the communication device may also include a memory, and the processor calls and executes the program stored in the memory to implement the above functions or steps or operations.
  • the communication device may also include a processor and a transceiver (or communication interface), and the processor calls and executes a program stored in an external memory to implement the above functions or steps or operations.
  • the communication device may include a processor, memory, and a transceiver.
  • the embodiment of the present application also provides a computer-readable storage medium, Program instructions (or computer programs, instructions) are stored thereon. When executed by the processor, the program instructions cause the computer to execute the above method embodiments and any possible implementation of the method embodiments by the network device or terminal. The operation performed.
  • Program instructions or computer programs, instructions
  • this application also provides a computer program product, including program instructions.
  • the computer program product When the computer program product is called and executed by a computer, it can cause the computer to implement any of the above method embodiments and method embodiments. An operation performed by a network device or terminal in a possible implementation.
  • this application also provides a chip or chip system, the chip is coupled with a transceiver, and is used to implement the above method embodiments and the network device in any possible implementation manner of the method embodiments. or operations performed by the terminal.
  • the chip system may include the chip, as well as components such as memory and communication interfaces.
  • embodiments of the present application also provide a communication system, where the communication system includes a network device and a terminal.
  • embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment that combines software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory that causes a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction means, the instructions
  • the device implements the functions specified in a process or processes of the flowchart and/or a block or blocks of the block diagram.
  • These computer program instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operating steps to be performed on the computer or other programmable device to produce computer-implemented processing, thereby executing on the computer or other programmable device.
  • Instructions provide steps for implementing the functions specified in a process or processes of a flowchart diagram and/or a block or blocks of a block diagram.

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

Abstract

L'invention concerne un procédé et un appareil de communication, un système, et un support de stockage, qui se rapportent à des systèmes de communication sans fil. Le procédé comprend les étapes suivantes : un dispositif de réseau détermine des informations de configuration et envoie les informations de configuration. Les informations de configuration sont utilisées pour indiquer N ressources associées, les N ressources associées comprennent une première ressource et une seconde ressource, la première ressource correspond à une première ressource de canal d'accès aléatoire physique (PRACH) et la seconde ressource correspond à une seconde ressource de canal PRACH, N étant un nombre entier positif supérieur ou égal à 2. Au moyen de la configuration d'une pluralité de ressources associées, des signaux de liaison montante peuvent être envoyés sur une pluralité de ressources de canal PRACH correspondant à la pluralité de ressources associées de façon à améliorer la couverture de liaison montante pendant un processus d'accès aléatoire.
PCT/CN2023/087618 2022-04-16 2023-04-11 Procédé et appareil de communication, système, et support de stockage WO2023198059A1 (fr)

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CN202210400399 2022-04-16
CN202210400399.7 2022-04-16
CN202210585953.3 2022-05-26
CN202210585953.3A CN116963115A (zh) 2022-04-16 2022-05-26 一种通信方法、装置、系统及存储介质

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110351877A (zh) * 2018-04-04 2019-10-18 维沃移动通信有限公司 非竞争随机接入资源配置方法和设备
WO2021229537A1 (fr) * 2020-05-15 2021-11-18 Telefonaktiebolaget Lm Ericsson (Publ) Signalisation de prise en charge pour saut de fréquence amélioré pour srs ap
CN113767707A (zh) * 2019-06-14 2021-12-07 Oppo广东移动通信有限公司 随机接入的方法和设备
WO2022061555A1 (fr) * 2020-09-22 2022-03-31 华为技术有限公司 Procédé et appareil de communication

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110351877A (zh) * 2018-04-04 2019-10-18 维沃移动通信有限公司 非竞争随机接入资源配置方法和设备
CN113767707A (zh) * 2019-06-14 2021-12-07 Oppo广东移动通信有限公司 随机接入的方法和设备
WO2021229537A1 (fr) * 2020-05-15 2021-11-18 Telefonaktiebolaget Lm Ericsson (Publ) Signalisation de prise en charge pour saut de fréquence amélioré pour srs ap
WO2022061555A1 (fr) * 2020-09-22 2022-03-31 华为技术有限公司 Procédé et appareil de communication

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