WO2022068795A1 - 随机接入方法、装置、终端及可读存储介质 - Google Patents

随机接入方法、装置、终端及可读存储介质 Download PDF

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Publication number
WO2022068795A1
WO2022068795A1 PCT/CN2021/121244 CN2021121244W WO2022068795A1 WO 2022068795 A1 WO2022068795 A1 WO 2022068795A1 CN 2021121244 W CN2021121244 W CN 2021121244W WO 2022068795 A1 WO2022068795 A1 WO 2022068795A1
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Prior art keywords
reference signal
sfn
rach resource
cell
target
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PCT/CN2021/121244
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English (en)
French (fr)
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陈力
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维沃移动通信有限公司
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Priority to EP21874455.5A priority Critical patent/EP4216638A4/en
Publication of WO2022068795A1 publication Critical patent/WO2022068795A1/zh
Priority to US18/123,326 priority patent/US20230232459A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application belongs to the field of communication technologies, and in particular relates to a random access method, device, terminal and readable storage medium.
  • TRP transmission reception point
  • cell free cell free
  • single frequency network single frequency Newtork, SFN
  • the purpose of the embodiments of the present application is to provide a random access method, device, terminal, and readable storage medium, which can solve the problem of how to perform random access after SFN is introduced.
  • a random access method applied to a terminal, including:
  • the first reference signal is a reference signal unique to the single frequency network SFN
  • the second reference signal is a reference signal unique to a cell or a transmission and reception point cell/TRP.
  • a random access device applied to a terminal, including:
  • a selection module configured to select a target random access channel RACH resource associated with the first reference signal and/or the second reference signal
  • an access module configured to initiate random access by using the target RACH resource
  • the first reference signal is a reference signal specific to the single frequency network SFN
  • the second reference signal is a reference signal specific to a cell or a transmission and reception point cell/TRP.
  • a terminal including a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction when executed by the processor implements the following The steps of the random access method described in the first aspect.
  • a readable storage medium wherein a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the random access method according to the first aspect are implemented.
  • a fifth aspect provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a network-side device program or instruction, implementing the method described in the first aspect. The steps of the random access method described above.
  • a program product is provided, the program product is stored in a non-volatile storage medium, the program product is executed by at least one processor to implement the steps of the random access method according to the first aspect .
  • random access is initiated by using RACH resources associated with SFN-specific reference signals and/or cell/TRP-specific reference signals, which can implement RACH fast access and effectively save terminal power consumption.
  • Figure 1a is a schematic diagram of an SFN architecture
  • Figure 1b is a schematic diagram of a dense network architecture
  • Fig. 1c is a schematic diagram of the random access flow of contention
  • FIG. 1d is a schematic diagram of a non-contention random access process
  • FIG. 2 is a schematic flowchart of a random access method provided by an embodiment of the present application
  • FIG. 3 is a schematic structural diagram of a random access apparatus provided by an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • first, second and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and "first”, “second” distinguishes Usually it is a class, and the number of objects is not limited.
  • the first object may be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the associated objects are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • system and “network” in the embodiments of the present application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies.
  • NR New Radio
  • NR terminology is used in most of the following description, although these techniques are also applicable to applications other than NR system applications, such as 6th generation ( 6th Generation, 6G) communication system.
  • the terminal may also be referred to as a terminal device or a user terminal (User Equipment, UE), and the terminal may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, Personal Digital Assistant (PDA), PDA, Netbook, Ultra-mobile Personal Computer (UMPC), Mobile Internet Device (MID), Wearable Device (Wearable Device) or Vehicle-mounted equipment (VUE), pedestrian terminal (PUE) and other terminal-side equipment, wearable equipment includes: bracelets, headphones, glasses, etc. It should be noted that, the embodiment of the present application does not limit the specific type of the terminal.
  • the network side may be a base station, wherein the base station may be referred to as a Node B, an evolved Node B, an access point, a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a Basic Service Set (Basic Service Set) , BSS), Extended Service Set (Extended Service Set, ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, WiFi Node, Transmitting Receiving Point Point, TRP) or any other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiments of this application, only the base station in the NR system is used. For example, but the specific type of the base station is not limited.
  • SFN transmission scheme Multiple cells or multiple transmission points send the same signal, there is no co-channel interference between different cells, and multiple signals can improve Signal to Interference plus Noise Ratio (SINR), transmission quality and overlay effects.
  • Multiple cells forming an SFN can share a cell ID, that is, the ID of a super cell.
  • Multiple cells can transmit signals by means of SFN transmission. For example, each cell transmits with a wide beam, and a terminal can receive the wide beam sent by multiple cells at a certain moment, thereby obtaining diversity gain. In the SFN transmission scheme, the terminal does not need to frequently perform cell reselection or handover between cells.
  • a SFN super cell consisting of 7 cells is shown.
  • the network In the process of IDLE or INACTIVE UE moving, the network provides the priority of each frequency point.
  • the measurement evaluation value of the target (or neighbor) cell (calculated according to the measurement result of the target (or neighbor) cell after adding the offset) is higher than the measurement evaluation value of the serving cell (according to the measurement result of the serving cell)
  • the measurement result is calculated after adding the offset), and it lasts for a period of time (eg, the duration configured by the network), and the UE stays in the current serving cell for more than a period of time (eg, 1s as agreed in the protocol), then the UE restarts.
  • the target (or neighbor) cell is selected.
  • inter-frequency ie, inter-frequency
  • inter-RAT different technology
  • inter-frequency inter-frequency
  • inter-RAT different technology
  • inter-frequency ie inter-frequency
  • ie inter-RAT different technology
  • IDLE/INACTIVE UE triggers the connection establishment process by receiving the paging message sent by the network side, so as to send and receive data.
  • a low frequency (eg FR1) cell has a larger coverage area than a high frequency (eg FR2) cell.
  • the terminal When the terminal moves within the coverage area of FR1, it may continuously change the FR2 cell, but the FR1 cell will not be changed.
  • a terminal When a terminal initially activates an FR2 cell or switches an FR2 cell, it needs to continuously measure the signal quality of each beam. Due to the large number of beams, it will lead to an excessively long cell activation time or cell switching time. For example, when certain conditions are met, the measurement time can reach the level of seconds, as follows:
  • the above-mentioned long measurement time will also lead to large power consumption of the UE.
  • the base station can place its protocol stack entities on different control units. For example, radio resource control (Radio Resource Control, RRC) and packet data convergence protocol (Packet Data Convergence Protocol, PDCP) are placed on the CU, radio link layer control (Radio Link Control, RLC) and media access control layer (Media Access Control, MAC)/port physical layer (Physical Layer, PHY) is placed on the DU.
  • RRC Radio Resource Control
  • RLC Radio Link Control
  • MAC Media Access Control
  • PHY Physical Layer
  • CU and DU have certain management rights of radio resources.
  • the CU can manage the cells connected to it through the RRC message
  • the DU can manage the cells connected to it through the MAC CE message.
  • Multiple DUs are connected to one CU, and the CU is connected to the core network and other CUs.
  • Initial search network including synchronization signal block (Synchronization Signal Block, SSB) synchronization and reception of system information. Specifically, first receive the primary synchronization signal (Primary Synchronization Signals, PSS), then receive the secondary synchronization signal (Secondary Synchronization Signals, SSS), and then receive the physical broadcast channel (Physical Broadcast Channel, PBCH): obtain the SSB index, and the PBCH RMRS and PBCH Information in the Master Information Block (MIB).
  • PSS Primary Synchronization Signals
  • SSS Secondary Synchronization Signals
  • PBCH Physical Broadcast Channel
  • system information system information, SI
  • SI broadcasted system information
  • Random Access (RACH) procedure :
  • the RACH process is divided into a contention random access process and a non-contention random access process.
  • the contention random access process is four steps: message 1-message 4 four-step access, as shown in Figure 1c, and non-competitive only requires two-step access of message 1 and message 2, as shown in Figure 1d.
  • Both the contention random access and the non-contention random access message 2 send a random access response (Random Access Response, RAR).
  • RAR Random Access Response
  • the UE monitors the RAR corresponding to the random access radio network temporary identity (Radio access Radio Network Tempory Identity, RA-RNTI) in the RAR window.
  • RA-RNTI Radio access Radio Network Tempory Identity
  • the competing random access Since the competing random access has the problem that the UE sends the same preamble in the same PRACH resource, after receiving the message 2, it needs to send the message 3 according to the UL grant in the message, and the UE will send the message 3 in the message.
  • 3 carries the identity of the UE, and starts the contention resolution timer when message 3 is sent. If the message 4 sent by the base station is received before the contention resolution timer expires, the UE contention resolution is successful. The base station will carry the UE identifier in the message. The UE can judge whether it is its own message 4 according to the UE identity carried in the message 4, so as to judge whether the competition is successful.
  • 2-step RACH is cited: that is, the RACH process includes two steps: the terminal sends message A to the network side, and then receives the message B sent by the network side.
  • message A includes the functions of the above-mentioned message 1 or message 1 and message 3
  • message B includes the functions of the above-mentioned message 2 or message 2 and message 4.
  • an embodiment of the present application provides a random access method, which is applied to a terminal, and the method includes:
  • Step 201 Select a target random access channel RACH resource associated with the first reference signal and/or the second reference signal;
  • Step 202 use the target RACH resource to initiate random access
  • the first reference signal is an SFN-specific (may be called SFN specific or SFN super cell specific) reference signal
  • the second reference signal is a cell/TRP-specific (may be called cell/TRP specific) reference signal
  • an SFN-specific cell may be called an SFN layer cell
  • a cell/TRP-specific cell may be called a cell/TRP layer cell.
  • SFN is the scope of a Super cell, which includes several cells or TRPs, usually called SFN super cell as SFN layer.
  • the cell corresponding to the Super cell or the SFN layer is a specific cell of the SFN; and several cells or TRPs included in the SFN range are the cell/TRP layer, or the cells or TRPs within the SFN range.
  • the cell/TRP corresponding to this layer is a specific cell or TRP of the cell/TRP.
  • the reference signal RS, system message SI, paging message Paging, etc. on the SFN layer are called SFN-specific RS, SI, paging, etc.
  • the reference signal RS, system message SI, paging message Paging, etc. in the cell/TRP layer are all called cell/TRP-specific RS, SI, paging, etc.
  • cell/TRP specific That is, the relevant configuration corresponding to each cell/TRP is independent.
  • the configuration in the cell/TRP scope is the same.
  • SFN/super cell specific that is, the related configuration corresponding to each SFN or super cell is independent.
  • the configuration in the SFN scope or the super cell scope is the same.
  • the above-mentioned types of the first reference signal and the second reference signal may include multiple types.
  • the reference signal may be SSB, that is, SFN specific SSB and cell/TRP specific SSB, and the reference signal may also be channel state information reference.
  • Signal Channel-State Information reference Signal, CSI-RS), Cell Reference Signal (CRS), Sounding Reference Signal (Sounding Reference Signal, SRS), Demodulation Reference Signal (Demodulation Reference Signal, DMRS), etc. reference signal.
  • the SFN-specific cells when the network is deployed with high-frequency and low frequency layers, include cells in the low-frequency range, and the cell/TRP-specific cells include high-frequency ranges or, when the network includes a satellite communication network (satellite or HAPS), the SFN-specific cell includes a High Altitude Platform Station (HAPS) cell or a high-orbit satellite cell, cell/TRP-specific cells
  • HAPS High Altitude Platform Station
  • the cells include low-orbit satellite cells or cells covered by ground base stations.
  • the RACH resource is shared by all cells/TRPs within the SFN (super cell) range.
  • the terminal selects a target RACH resource, which is the RACH resource associated with the SFN-specific reference signal and/or the cell/TRP-specific reference signal, and the terminal uses the target RACH resource to initiate random access.
  • the existing RACH resource configuration and random access method may be used, which will not be repeated here.
  • the target RACH resource is configured through the SFN-specific system message or the cell/TRP-specific system message.
  • the terminal selects the target random access channel RACH resource associated with the first reference signal and/or the second reference signal, including at least one of the following:
  • selecting RACH resources based on preset priority criteria includes:
  • the RACH resource associated with the first reference signal is preferentially selected, that is, the RACH resource associated with the SFN specific reference signal is given priority;
  • the RACH resource associated with the second reference signal is preferentially selected, and the RACH resource associated with the cell/TRP specific reference signal is given priority;
  • the target RACH resource according to the preset priority order, which is equivalent to the combination of the above-mentioned mode a and mode b, specifically the CFRA RACH resource associated with the SFN specific reference signal, prior to the CFRA RACH resource associated with the cell/TRP specific reference signal , prior to the CBRA RACH resource associated with the SFN specific reference signal, prior to the CBRA RACH resource associated with the cell/TRP specific reference signal.
  • the measurement result includes the reference signal received power (Reference Signal Receiving Power, RSRP), the reference signal receiving quality (Reference Signal Receiving Quality, RSRQ), the signal to interference plus noise ratio (Signal to interference plus noise ratio) measured on the reference signal At least one item such as Interference plus Noise Ratio, SINR), Received Signal Strength Indication (RSSI), etc., and selecting RACH resources based on the measurement results includes:
  • the mode e can be combined with the above-mentioned preset priority criteria, that is, combined with the modes a-d:
  • the RACH resource associated with the SFN-specific reference signal has priority
  • the CFRA RACH resource has priority
  • the RACH resources associated with the cell/TRP specific reference signals have priority;
  • e+d Among the RACH resources corresponding to the reference signal whose measurement result is higher than the first threshold, select the target RACH resource according to the preset priority order, specifically the CFRA RACH resource associated with the SFN specific reference signal, which takes precedence over the cell/TRP specific reference.
  • the CFRA RACH resource associated with the signal takes precedence over the CBRA RACH resource associated with the SFN specific reference signal, and takes precedence over the CBRA RACH resource associated with the cell/TRP specific reference signal;
  • the measurement result of the third reference signal is higher than the fifth threshold of the measurement result of the fourth reference signal, select the RACH resource associated with the third reference signal, the fifth threshold is greater than or equal to 0, and the third reference signal is the first the reference signal or the second reference signal, and the fourth reference signal is the first reference signal or the second reference signal;
  • the third reference signal and the fourth reference signal may be of the same type, for example, both are cell/TRP specific reference signals, or both are SFN specific reference signals; the third reference signal and the fourth reference signal are also It can be of different types, for example, the third reference signal is a cell/TRP specific reference signal, the fourth reference signal is an SFN specific reference signal, or the third reference signal is an SFN specific reference signal, and the fourth reference signal is a cell/TRP specific reference signal Signal.
  • the RACH resource corresponding to the reference signal with the best measurement result is selected, that is, the cell/TRP specific reference signal and the SFN specific reference signal are put together to compare and select the best one.
  • selecting RACH resources based on the time domain, frequency domain or space domain includes:
  • the RACH resource associated with the most recent (latest tone) reference signal received before the RACH is initiated is selected; specifically, the last reference signal may be the first reference signal or the second reference signal.
  • a reference signal whose newly received measurement result is greater than the first threshold before random access is initiated is selected, that is, the RACH resource associated with the closest reference signal whose measurement result is higher than the first threshold is selected.
  • selection based on the type of the terminal, different states of the terminal, and service type (type) includes:
  • the terminal type that supports SFN SSB uses the RACH resource corresponding to the SFN specific reference signal.
  • a terminal (camped) in the state of the SFN supercell uses the RACH resource corresponding to the SFN specific reference signal.
  • the method further includes: when the measurement result of the first reference signal is lower than a preset reference threshold, receiving or measuring the second reference signal, that is If the SFN specific reference signal measurement result is lower than a certain reference threshold, the cell/TRP specific reference signal is received or measured.
  • the method further includes: before initiating random access, receiving an SFN-specific system message and/or a cell/TRP-specific system message; And/or, before initiating random access, receive or measure the second reference signal, that is, before RACH, the terminal always receives SFN specific and/or cell/TRP specific SI, and/or, before RACH, the terminal always receives or Measure cell specific reference signals.
  • the configuration of the RACH resource corresponding to the above-mentioned SFN specific reference signal may be one of the following:
  • the configuration information is included in SFN specific SI, or cell/TRP speific SI.
  • the RACH resources of all cells within the SFN range are the same, and are configured by the SFN-specific system message, or the same content is configured by the cell/TRP-specific system message.
  • the RACH process continues to be performed based on the RACH resources associated with the SFN-specific reference signal, that is, if the SFN (super cell) changes during the RACH process Or cell changes between SFNs (super cells), including cell selection reselection or handover (synchronized reconfiguration), etc., the RACH process based on the SFN specific reference signal continues.
  • the RACH resources of all cells within the range of the SFN are independent, and are configured by the system message specific to the SFN, or individually configured by the system message specific to the cell/TRP.
  • the RACH process is suspended or the RACH process is restarted based on the RACH resource associated with the SFN-specific reference signal, that is, the RACH of all cells/TRPs within the SFN range. It is individual (individual), that is, it is configured within the scope of the SFN super cell, but the RACH resources between each cell/TRP may be different. Specifically, the corresponding configuration is configured in the SFN specific SI (all cells/TRPs within the scope of the SFN super cell need to be configured), or all cell/TRP specific SIs are configured separately.
  • the SFN (super cell) change or the cell change between SFN (super cells) occurs during the RACH process, including cell selection reselection or handover (synchronized reconfiguration), etc.
  • the SFN SSB-based RACH process is suspended or restarted .
  • the method also includes:
  • a cell change occurs within the SFN range before preamble transmission, a cell/TRP specific system message is received.
  • a system message specific to SFNs is received.
  • the execution subject may be a random access device, or a control module in the random access device for executing the random access method.
  • the random access device provided by the embodiment of the present application is described by taking the random access method performed by the random access device as an example.
  • an embodiment of the present application provides a random access apparatus 300, applied to a terminal, including:
  • a selection module 301 configured to select a target random access channel RACH resource associated with the first reference signal and/or the second reference signal;
  • the first reference signal is a reference signal specific to the single frequency network SFN
  • the second reference signal is a reference signal specific to a cell or a transmission and reception point cell/TRP.
  • the target RACH resource when the target RACH resource is the RACH resource associated with the first reference signal, the target RACH resource is configured through an SFN-specific system message or a cell/TRP-specific system message.
  • the selection module is further used for at least one of the following:
  • the target RACH resource is selected according to the type of the terminal or the state of the terminal or the type of service.
  • the selection module is further used for at least one of the following:
  • the target RACH resource is selected according to a preset priority order.
  • the selection module is further used for at least one of the following:
  • the RACH resource associated with the third reference signal is selected, the fifth threshold is greater than or equal to 0, and the third reference The signal is the first reference signal or the second reference signal, and the fourth reference signal is the first reference signal or the second reference signal;
  • the RACH resource associated with the reference signal with the highest measurement result among the first reference signal and the second reference signal is selected.
  • the selection module is further used to:
  • the RACH resource associated with the target reference signal is selected, and the target reference signal is the reference signal received most recently before the random access is initiated.
  • the selection module is further used to:
  • a RACH resource associated with a target reference signal is selected, where the target reference signal is a reference signal with a newly received measurement result greater than a first threshold before random access is initiated.
  • the apparatus when the first reference signal and the second reference signal exist simultaneously, the apparatus further comprises:
  • a first processing module configured to receive or measure the second reference signal when the measurement result of the first reference signal is lower than a preset reference threshold.
  • the apparatus when the first reference signal and the second reference signal exist simultaneously, the apparatus further comprises:
  • a second processing module configured to receive SFN-specific system messages and/or cell/TRP-specific system messages before initiating random access; and/or, before initiating random access, receive or measure the second reference Signal.
  • the RACH resources of all cells within the SFN range are the same, and are configured by SFN-specific system messages, or the same content is configured by cell/TRP-specific system messages.
  • the access module is further configured to:
  • the RACH process is continued based on the RACH resource associated with the SFN-specific reference signal.
  • the RACH resources of all cells within the SFN range are independent and configured by SFN-specific system messages, or individually configured by cell/TRP-specific system messages.
  • the access module is further configured to:
  • the RACH process is suspended or the RACH process is restarted based on the RACH resource associated with the SFN-specific reference signal.
  • the apparatus further comprises:
  • the second processing module is used to receive a cell/TRP-specific system message if a cell change within the SFN range occurs before the preamble preamble transmission; Changed to receive SFN-specific system messages.
  • SFN-specific cells when the network is deployed with a high frequency range and a low frequency range, SFN-specific cells include cells in the low-frequency range, and cell/TRP-specific cells include cells in the high-frequency range;
  • SFN-specific cells include HAPS cells or high-orbit satellite cells
  • cell/TRP-specific cells include low-orbit satellite cells or cells covered by ground base stations
  • random access is initiated by using RACH resources associated with SFN-specific reference signals and/or cell/TRP-specific reference signals, which can implement RACH fast access and effectively save terminal power consumption.
  • the random access device in this embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal.
  • the device may be a mobile terminal or a non-mobile terminal.
  • the mobile terminal may include but not limited to the types of terminals listed above, and the non-mobile terminal may be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television (television) , TV), teller machine or self-service machine, etc., which are not specifically limited in the embodiments of the present application.
  • Network Attached Storage NAS
  • personal computer personal computer
  • TV television
  • teller machine or self-service machine etc.
  • the random access device in this embodiment of the present application may be a device having an operating system.
  • the operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.
  • FIG. 4 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.
  • the terminal 400 includes but is not limited to: a radio frequency unit 401, a network module 402, an audio output unit 403, an input unit 404, a sensor 405, a display unit 406, a user input unit 407, an interface unit 408, a memory 409, a processor 410 and other components .
  • the terminal 400 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 410 through a power management system, so as to manage charging, discharging, and power consumption through the power management system management and other functions.
  • a power source such as a battery
  • the terminal structure shown in FIG. 4 does not constitute a limitation on the terminal, and the terminal may include more or less components than shown, or combine some components, or arrange different components, which will not be repeated here.
  • the input unit 404 may include a graphics processor (Graphics Processing Unit, GPU) 4041 and a microphone 4042. Such as camera) to obtain still pictures or video image data for processing.
  • the display unit 406 may include a display panel 4061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 407 includes a touch panel 4071 and other input devices 4072 .
  • the touch panel 4071 is also called a touch screen.
  • the touch panel 4071 may include two parts, a touch detection device and a touch controller.
  • Other input devices 4072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which are not described herein again.
  • the radio frequency unit 401 receives the downlink data from the wireless access network side device, and then processes it to the processor 410; in addition, sends the uplink data to the wireless access network side device.
  • the radio frequency unit 401 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • Memory 409 may be used to store software programs or instructions as well as various data.
  • the memory 409 may mainly include a storage program or instruction area and a storage data area, wherein the stored program or instruction area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.) and the like.
  • the memory 409 may include a high-speed random access memory, and may also include a non-volatile memory, wherein the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • ROM Read-Only Memory
  • PROM programmable read-only memory
  • PROM erasable programmable read-only memory
  • Erasable PROM Erasable PROM
  • EPROM electrically erasable programmable read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • flash memory for example at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
  • the processor 410 may include one or more processing units; optionally, the processor 410 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, application programs or instructions, etc., Modem processors mainly deal with wireless communications, such as baseband processors. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 410.
  • the processor 410 is configured to select a target random access channel RACH resource associated with the first reference signal and/or the second reference signal;
  • the processor 410 is further configured to initiate random access by using the target RACH resource;
  • the first reference signal is a reference signal unique to the single frequency network SFN
  • the second reference signal is a reference signal unique to a cell or a transmission and reception point cell/TRP.
  • the target RACH resource is the RACH resource associated with the first reference signal
  • the target RACH resource is configured through an SFN-specific system message or a cell/TRP-specific system message.
  • processor 410 is further used for at least one of the following:
  • the target RACH resource is selected according to the type of the terminal or the state of the terminal or the type of service.
  • processor 410 is further used for at least one of the following:
  • the target RACH resource is selected according to a preset priority order.
  • processor 410 is further used for at least one of the following:
  • the third threshold is greater than or equal to 0, the third reference signal
  • the signal is the first reference signal or the second reference signal
  • the fourth reference signal is the first reference signal or the second reference signal
  • the RACH resource associated with the reference signal with the highest measurement result among the first reference signal and the second reference signal is selected.
  • the processor 410 is further configured to:
  • the RACH resource associated with the target reference signal is selected, and the target reference signal is the reference signal received most recently before the random access is initiated.
  • the processor 410 is further configured to:
  • a RACH resource associated with a target reference signal is selected, where the target reference signal is a reference signal with a newly received measurement result greater than a first threshold before random access is initiated.
  • the processor 410 is further configured to receive or measure the first reference signal when the measurement result of the first reference signal is lower than a preset reference threshold. Two reference signals.
  • the processor 410 is further configured to receive an SFN-specific system message and/or a cell/TRP-specific system message before initiating random access; and/or, before initiating random access, the second reference signal is received or measured.
  • the RACH resources of all cells within the SFN range are the same, and are configured by a system message specific to the SFN, or the same content is configured by a system message specific to the cell/TRP.
  • the processor 410 is further configured to:
  • the RACH process continues to be performed based on the RACH resource associated with the SFN-specific reference signal.
  • the RACH resources of all cells within the range of the SFN are independent and configured by the SFN-specific system message, or individually configured by the cell/TRP-specific system message.
  • the processor 410 is further configured to:
  • the RACH process is suspended or the RACH process is restarted based on the RACH resource associated with the SFN-specific reference signal.
  • the processor 410 is further configured to receive a cell/TRP-specific system message if a cell change within the SFN range occurs before the preamble preamble transmission; or, if the SFN change occurs before the preamble preamble transmission or Cell changes between SFNs, receive SFN-specific system messages.
  • the SFN-specific cells include cells in the low-frequency range
  • the cell/TRP-specific cells include cells in the high-frequency range
  • SFN-specific cells include HAPS cells or high-orbit satellite cells
  • cell/TRP-specific cells include low-orbit satellite cells or cells covered by ground base stations
  • Embodiments of the present application further provide a readable storage medium, where a program or an instruction is stored on the readable storage medium.
  • a program or an instruction is stored on the readable storage medium.
  • the processor is the processor in the terminal described in the foregoing embodiment.
  • the readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
  • An embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a terminal program or instruction, and the implementation is as described in the first aspect or to implement the various processes of the above random access method embodiments; or to run wireless access network side equipment programs or instructions to implement the various processes of the above random access method embodiments; or to run core network side equipment
  • the program or instruction may implement each process of the above-mentioned random access method embodiments, and can achieve the same technical effect. To avoid repetition, details are not repeated here.
  • the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.

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Abstract

本申请公开了一种随机接入方法、装置、终端及可读存储介质，属于通信技术领域。该方法包括：选择与第一参考信号和/或第二参考信号关联的目标RACH资源；使用目标RACH资源发起随机接入；其中，第一参考信号为SFN特有的参考信号，第二参考信号为小区或传输接收点cell/TRP特有的参考信号。

Description

随机接入方法、装置、终端及可读存储介质
相关申请的交叉引用
本申请主张在2020年9月29日在中国提交的中国专利申请号No.202011053343.6的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域，具体涉及一种随机接入方法、装置、终端及可读存储介质。
背景技术
随着未来通信系统部署频段越来越高，一个小区(cell)或者传输接收点(transmission reception point，TRP)的覆盖范围越来越小。同时，未来移动通信系统支持的应用场景也越来越丰富，包括更多的高速场景。这就带来了频繁的移动性(包括连接态(connected mode)的切换(handover)和空闲态(idle)或非激活态(inactive mode)的小区选择和重选(cell selection/reselection))。从而引入更多的终端测量，这会增大终端的耗电。
为了降低终端的耗电，将会引入无小区化(cell free)，或者单频网络(single frequency Newtork,SFN)，目前缺少针对该场景的随机接入方法。
发明内容
本申请实施例的目的是提供一种随机接入方法、装置、终端及可读存储介质，能够解决如何在引入SFN后进行随机接入的问题。
为了解决上述技术问题，本申请是这样实现的：
第一方面，提供了一种一种随机接入方法，应用于终端，包括：
选择与第一参考信号和/或第二参考信号关联的目标随机接入信道RACH资源；
使用所述目标RACH资源发起随机接入；
其中，所述第一参考信号为单频网SFN特有的参考信号，所述第二参考 信号为小区或传输接收点cell/TRP特有的参考信号。
第二方面，提供了一种随机接入装置，应用于终端，包括：
选择模块，用于选择与第一参考信号和/或第二参考信号关联的目标随机接入信道RACH资源；
接入模块，用于使用所述目标RACH资源发起随机接入；
其中，所述第一参考信号为单频网SFN特有的参考信号，所述第二参考信号为小区或传输接收点cell/TRP特有的参考信号。
第三方面，提供了一种终端，包括处理器，存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面所述的随机接入方法的步骤。
第四方面，一种可读存储介质，其中，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如第一方面所述的随机接入方法的步骤。
第五方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行网络侧设备程序或指令，实现如第一方面所述的随机接入方法的步骤。
第六方面，提供一种程序产品，所述程序产品被存储在非易失的存储介质中，所述程序产品被至少一个处理器执行以实现如第一方面所述的随机接入方法的步骤。
在本申请实施例中，使用与SFN特有的参考信号和/或cell/TRP特有的参考信号关联的RACH资源发起随机接入，能够实现RACH快速接入，有效节省终端功耗。
附图说明
图1a为一种SFN架构示意图；
图1b为一种密集网络架构示意图；
图1c为竞争的随机接入流程示意图；
图1d为非竞争的随机接入流程示意图；
图2为本申请实施例提供的随机接入方法的流程示意图；
图3为本申请实施例提供的随机接入装置的结构示意图；
图4为本申请实施例提供的终端结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”所区别的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。然而，以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，尽管这些技术也可应用于NR系统应用以外的应用，如第6代(6th Generation，6G)通信系统。
本申请实施例中，终端也可以称作终端设备或者用户终端(User Equipment，UE)，终端可以是手机、平板电脑(Tablet Personal Computer)、 膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、可穿戴式设备(Wearable Device)或车载设备(VUE)、行人终端(PUE)等终端侧设备，可穿戴式设备包括：手环、耳机、眼镜等。需要说明的是，在本申请实施例并不限定终端的具体类型。网络侧可以是基站，其中，基站可被称为节点B、演进节点B、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、B节点、演进型B节点(eNB)、家用B节点、家用演进型B节点、WLAN接入点、WiFi节点、发送接收点(Transmitting Receiving Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR系统中的基站为例，但是并不限定基站的具体类型。
为更好理解本申请提供的方案，首先对以下内容进行描述：
单频网(Single-Frequency Network，SFN)介绍：
SFN传输方案：多个小区或多个发送点发送同样的信号，不同小区间没有同频干扰，且多个信号可提升信号与干扰加噪声比(Signal to Interference plus Noise Ratio，SINR)、传输质量和覆盖效果。组成SFN的多个小区可以共用一个cell ID，即超级小区(super cell)的ID。多个小区可以通过SFN传输的方式进行信号的发送，例如其中每个小区以宽波束发送，某一时刻终端可以接收到多个小区发送的宽波束，从而获得分集增益。SFN传输方案中，终端不需要在小区间频繁的进行小区重选或者切换。
参加图1a，图中示出一种有7个小区构成的SFN super cell。
IDLE或INACTIVE UE移动性：
IDLE或INACTIVE UE在移动的过程中，网络提供各频点的优先级。
对于同频邻小区，如果，目标(或邻居)小区的测量评估值(根据目标(或邻居)小区的测量结果加入偏移量后计算得出)比服务小区的测量评估值(根据服务小区的测量结果加入偏移量后计算得出)好，且持续一段时长(如，网络配置的时长)，且UE在当前服务小区驻留时间超过一段时长(如， 协议约定的1s)，则UE重选到该目标(或邻居)小区。
对于高优先级异频(即inter-frequency)或异技术(即inter-RAT)邻小区，如果，目标(或邻居)小区的测量评估值超过门限值，且持续一段时长(如，网络配置的时长)，则UE重选到该目标(或邻居)小区。
对于低优先级异频(即inter-frequency)或异技术(即inter-RAT)邻小区，如果，目标(或邻居)小区的测量评估值大于门限值且当前服务小区的测量评估值小于门限值，且持续一段时长(如，网络配置的时长)，则UE重选到该目标(或邻居)小区。
对于异频(即inter-frequency)或异技术(即inter-RAT)邻小区，在目标(或邻居)频点优先级与当前服务(或驻留)频点优先级相同的时候，小区重选的方法与同频小区的小区重选方法。
IDLE/INACTIVE UE通过接收网络侧发送的寻呼消息，触发连接建立过程，从而进行数据的收发。
Cell free或密集网络：
参见图1b，低频(例如FR1)小区相比高频(例如FR2)小区覆盖范围大。
终端在FR1覆盖范围内移动时，可能会不断更换FR2小区，但是FR1小区不更换。
终端在初始激活一个FR2小区或者切换FR2小区时，需要不断测量各个波束的信号质量，由于波束数量较多，会导致过长的小区激活时间，或者小区切换时间。例如，在满足一定条件时，测量时间可以达到秒级别，如下：
8ms+24*T rs+T uncertainty_MAC+T L1-RSRP,measure+T L1-RSRP,report+T HARQ+T FineTiming；
上述较长的测量时间同时会导致UE功耗较大。
集中控制单元(Centralized Unit，CU)、分布式单元(Distributed Unit，DU)分离简介：
在5G系统中，基站(gNB)可以将其协议栈实体分别放在不同的控制单元上。如，无线资源控制(Radio Resource Control，RRC)和分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)放置在CU上，无线链路层控制(Radio Link Control，RLC)和媒体介入控制层(Media Access Control， MAC)/端口物理层(Physical Layer，PHY)放置在DU上。其中，CU和DU有一定的无线资源的管理权限。如，CU可以通过RRC消息进行其下连接的小区的管理，DU可以通过MAC CE消息进行其下连接的小区的管理。多个DU与1个CU连接，而CU则与核心网以及其他CU连接。
终端系统接入基本流程：
1.初始搜网：包括同步信号块(Synchronization Signal Block，SSB)同步和系统信息的接收。具体地，先接收主同步信号(Primary Synchronization Signals，PSS)，再接收辅同步信号(Secondary Synchronization Signals，SSS)，再接收物理广播信道(Physical Broadcast Channel，PBCH)：获取SSB index，以及PBCH RMRS和主信息块(Master information Block，MIB)中的信息。
2.根据上述获取到的信息再接收广播的系统信息(system information,SI)，其中包括接入系统所需信息。
3.根据上述所获得的系统接入所需信息进行随机接入。
随机接入(RACH)过程：
目前RACH过程分成竞争的随机接入和非竞争的随机接入过程。竞争的随机接入过程为4步为message 1–message 4四步接入，如图1c所示，非竞争的只需要message 1和message 2两步接入，如图1d所示。
message 1-4:
竞争的随机接入和非竞争的随机接入的message 2都是发送随机接入响应(Random Access Response，RAR)。UE在RAR窗口内监听对应随机接入无线网络临时标识(Radio access Radio Network Tempory Identity，RA-RNTI)的RAR。
由于竞争的随机接入存在UE在同样的PRACH资源发送同样的前导码(preamble)的问题，因此在接收完message 2后还需要在根据在message里的UL grant发送message 3，并且UE会在message 3上携带UE的标识，在message 3发送时同时启动竞争解决timer。在竞争解决timer没超时前如果收到基站发送的message 4这UE竞争解决成功。message中基站会携带UE标识下来。UE根据message 4中携带的UE标识就可以判断是不是自己的message 4，从而判断是否竞争成功。
进一步，为了缩短接入系统时延，引用了2-step RACH：即包括两个步骤的RACH过程：分别是终端向网络侧发送message A，再接收网络侧下发的message B。其中的message A包括上述message 1或message 1与message 3的功能，message B包括上述message 2或message 2与message 4的功能。
下面结合附图，通过具体的实施例及其应用场景对本申请实施例提供的随机接入方法进行详细地说明。
参见图2，本申请实施例提供一种随机接入方法，应用于终端，该方法包括：
步骤201：选择与第一参考信号和/或第二参考信号关联的目标随机接入信道RACH资源；
步骤202：使用目标RACH资源发起随机接入；
在本申请实施例中，第一参考信号为SFN特有的(可称为SFN specific或者SFN super cell specific)参考信号，第二参考信号为cell/TRP特有的(可称为cell/TRP specific)参考信号，相应地，SFN特有的小区可称为SFN layer小区，cell/TRP特有的小区可称为cell/TRP layer小区。
具体地，在实际部署时，SFN是一个Super cell的范围，它包括若干个cell或TRP，通常称SFN super cell为SFN layer。Super cell或者SFN layer对应的小区为SFN特有的(specific)小区；而SFN范围内包括的若干个cell或TRP，为cell/TRP layer，或者SFN范围内的cell或TRP。此layer对应的cell/TRP为cell/TRP特有的(specific)小区或TRP。相应的，在SFN layer上的参考信号RS、系统消息SI、寻呼消息Paging等，都称为SFN特有的RS、SI、paging等。在cell/TRP layer的参考信号RS、系统消息SI、寻呼消息Paging等，都称为cell/TRP特有的RS、SI、paging等。
首先对上述部分术语进行解释：
cell/TRP specific:即每个cell/TRP对应的相关配置是独立的。在cell/TRP范围内的配置是一样的。
SFN/super cell specific：即每个SFN或super cell对应的相关配置是独立的。在SFN范围内或super cell范围内的配置是一样。
需要说明的是，上述第一参考信号和第二参考信号的种类可以包括多种， 例如：参考信号可以是SSB，即SFN specific SSB和cell/TRP specific SSB，参考信号也可以是信道状态信息参考信号(Channel-State Information reference Signal，CSI-RS)、小区参考信号(Cell Reference Signal，CRS)、探测参考信号(Sounding Reference Signal，SRS)、解调参考信号(Demodulation Reference Signal，DMRS)等各类参考信号。
在一些实施方式中，当网络部署有高频范围和低频范围(high-frequency and low frequency layers)时，SFN特有的小区中包括低频范围内的小区，cell/TRP特有的小区中包括高频范围内的小区；或者，当网络包括卫星通信网络((satellite or HAPS))时，SFN特有的小区中包括高空平台站(High Altitude Platform Station，HAPS)小区或高轨卫星小区，cell/TRP特有的小区中包括低轨卫星小区或地面基站覆盖的小区。
在本申请实施例中，当SFN specific参考信号有关联(associated)的RACH资源时，此RACH资源对于SFN(super cell)范围内的所有cell/TRP都是共享的。
终端选择目标RACH资源，该目标RACH资源为与SFN特有的参考信号和/或cell/TRP特有的参考信号关联的RACH资源，终端使用目标RACH资源发起随机接入。
具体地，针对终端使用cell/TRP specific参考信号关联的RACH资源的情况，可以采用现有的RACH资源配置以及随机接入方法，在此不再赘述。
针对终端使用SFN specific SSB参考信号的RACH资源的情况，即当目标RACH资源为与第一参考信号关联的RACH资源时，目标RACH资源通过SFN特有的系统消息或者cell/TRP特有的系统消息配置。
进一步地，在一些实施方式中，终端选择与第一参考信号和/或第二参考信号关联的目标随机接入信道RACH资源，包括以下至少一项：
(1)根据预设优先级准则，选择目标RACH资源：
在本申请实施例中，基于预设优先级准则选择RACH资源包括：
a.优先选择与第一参考信号关联的RACH资源，即SFN specific参考信号关联的RACH资源优先；
b.优先选择非竞争随机接入(Contention Free Random Access，CFRA) RACH资源，即CFRA RACH资源优先；
c.优先选择与第二参考信号关联的RACH资源，cell/TRP specific参考信号关联的RACH资源优先；
d.按照预设优先级顺序选择目标RACH资源，即相当于上述方式a和方式b的组合，具体为SFN specific参考信号关联的CFRA RACH资源，优先于cell/TRP specific参考信号关联的CFRA RACH资源，优先于SFN specific参考信号关联的CBRA RACH资源，优先于cell/TRP specific参考信号关联的CBRA RACH资源。
(2)根据第一参考信号和/或第二参考信号的测量结果，选择所述目标RACH资源：
在本申请实施例中，测量结果包括对参考信号测量的参考信号接收功率(Reference Signal Receiving Power，RSRP)、参考信号接收质量(Reference Signal Receiving Quality，RSRQ)、信号与干扰加噪声比(Signal to Interference plus Noise Ratio，SINR)、接收的信号强度指示(Received Signal Strength Indication，RSSI)等至少一项，基于测量结果选择RACH资源包括：
e.当第一参考信号的测量结果高于第一门限时，选择与第一参考信号关联的RACH资源，具体在选择时，选择高于第一门限的参考信号中对应的任意一个RACH资源；或者，当第一参考信号的测量结果不高于第二门限时，选择与第二参考信号关联的RACH资源；
进一步地，方式e可与与上述预设优先级准则相结合，即与方式a-d相结合：
e+a：测量结果高于第一门限的参考信号对应的RACH资源中，SFN specific参考信号关联的RACH资源优先；
e+b：测量结果高于第一门限的参考信号对应的RACH资源中，CFRA RACH资源优先；
e+c：测量结果高于第一门限的参考信号对应的RACH资源中，cell/TRP specific参考信号关联的RACH资源优先；
e+d：测量结果高于第一门限的参考信号对应的RACH资源中，按照预设优先级顺序选择目标RACH资源，具体为SFN specific参考信号关联的CFRA  RACH资源，优先于cell/TRP specific参考信号关联的CFRA RACH资源，优先于SFN specific参考信号关联的CBRA RACH资源，优先于cell/TRP specific参考信号关联的CBRA RACH资源；
f.当所述第二参考信号的测量结果高于第三门限时，选择与所述第二参考信号关联的RACH资源；或者，当所述第二参考信号的测量结果不高于第四门限时，选择与所述第一参考信号关联的RACH资源；
g.当第三参考信号的测量结果高于第四参考信号的测量结果第五门限时，选择与第三参考信号关联的RACH资源，第五门限大于或等于0，第三参考信号为第一参考信号或者第二参考信号，第四参考信号为第一参考信号或者第二参考信号；
在本申请实施例中，第三参考信号与第四参考信号可以是同一类的，比如都是cell/TRP specific参考信号，或都是SFN specific参考信号；第三参考信号与第四参考信号也可以是不同类的，比如第三参考信号是cell/TRP specific参考信号，第四参考信号是SFN specific参考信号，或者第三参考信号是SFN specific参考信号，第四参考信号是cell/TRP specific参考信号。
h.选择与第一参考信号和第二参考信号中测量结果最高的参考信号关联的RACH资源；
在本申请实施例中，选择测量结果最好的参考信号对应的RACH资源，即将cell/TRP specific参考信号与SFN specific参考信号放在一起比较选择最好的。
(3)根据时域、频域或空域，选择所述目标RACH资源：
在本申请实施例中，基于时域、频域或空域选择RACH资源包括：
i.选择与目标参考信号关联的RACH资源，目标参考信号为在发起随机接入前最新接收到参考信号；
在本申请实施例中，选择发起RACH前最近接到的一个(latest one)参考信号关联的RACH资源；具体地，最后的参考信号可以是第一参考信号或者第二参考信号。
进一步地，选择在发起随机接入前最新接收到的测量结果大于第一门限的参考信号，即选择最接近的且测量结果高于第一门限的参考信号关联的 RACH资源。
(4)根据终端的类型或终端的状态或业务的类型，选择所述目标RACH资源：
在本申请实施例中，基于终端的类型(type)，终端的不同状态，业务类型(type)等选择，包括：
j.不同终端类型或业务类似对应的不同的SFN specific参考信号或cell/TRP specific参考信号；
例如：支持SFN SSB的终端类型(优先)使用SFN specific参考信号对应的RACH资源。又例如：驻留(camp)在SFN super cell的状态的终端(优先)使用SFN specific参考信号对应的RACH资源。
在一些实施方式中，上述几种方式还可以进一步组合：
例如：选择测量结果高于第一门限且，SSB specific参考信号测量结果高于cell/TRP specific参考信号测量结果，且差值大于第二门限的的参考信号对应的CFRA RACH资源。
在一些实施方式中，当同时存在第一参考信号和第二参考信号时，本方法还包括：当第一参考信号的测量结果低于预设参考门限时，接收或测量第二参考信号，即如果SFN specific参考信号测量结果低于某一参考门限，则对cell/TRP specific参考信号进行接收或者测量。
在一些实施方式中，当同时存在第一参考信号和第二参考信号时，所述方法还包括：在发起随机接入之前，接收SFN特有的系统消息和/或cell/TRP特有的系统消息；和/或，在发起随机接入之前，接收或测量第二参考信号，即在RACH前，终端always接收SFN specific和/或者cell/TRP specific SI，和/或，在RACH前，终端always接收或测量cell specific参考信号。
在一些实施方式中，对于上述SFN specific参考信号对应的RACH资源的配置可以是如下之一：
其中配置信息包括在SFN specific SI，或者cell/TRP speific SI中。
1.SFN范围内的所有小区的RACH资源相同，并由SFN特有的系统消息配置，或者由cell/TRP特有的系统消息配置相同的内容。
进一步地，当在RACH过程中发生SFN变化或者SFN范围内的小区变 化时，基于SFN特有的参考信号关联的RACH资源继续执行RACH过程，即如果在RACH过程，发生了SFN(super cell)的改变或SFN(super cell)之间的小区改变，包括小区选择重选或者切换(同步重配)等，则基于SFN specific参考信号的RACH过程继续。
2.SFN范围内的所有小区的RACH资源独立，并由SFN特有的系统消息配置，或者由cell/TRP特有的系统消息单独配置。
进一步地，当在RACH过程中发生SFN变化或者SFN范围内的小区变化时，中止该RACH过程或基于SFN特有的参考信号关联的RACH资源重启RACH过程，即SFN范围内所有的cell/TRP的RACH是单独(individual)的，即是SFN super cell范围内配置的，但是各个cell/TRP之间的RACH资源可以是不同的。具体地，对应的配置在SFN specific SI中配置(需要配置SFN super cell范围内所有的cell/TRP)，或者，所有的cell/TRP specific SI单独配置。如果在RACH过程，发生了SFN(super cell)的改变或SFN(super cell)之间的小区改变，包括小区选择重选或者切换(同步重配)等，则基于SFN SSB的RACH过程中止或者重启。
进一步地，本方法还包括：
在前导码(preamble)传输之前如果发生SFN范围内的小区改变，接收cell/TRP特有的系统消息。或者，在前导码(preamble)传输之前如果发生SFN的改变或者SFN之间的小区改变，接收SFN特有的系统消息。
需要说明的是，本申请实施例提供的随机接入方法，执行主体可以为随机接入装置，或者，该随机接入装置中的用于执行随机接入方法的控制模块。本申请实施例中以随机接入装置执行随机接入方法为例，说明本申请实施例提供的随机接入装置。
参见图3，本申请实施例提供一种随机接入装置300，应用于终端，包括：
选择模块301，用于选择与第一参考信号和/或第二参考信号关联的目标随机接入信道RACH资源；
接入模块302，用于使用所述目标RACH资源发起随机接入；
其中，所述第一参考信号为单频网SFN特有的参考信号，所述第二参考信号为小区或传输接收点cell/TRP特有的参考信号。
在一些实施方式中，当目标RACH资源为与第一参考信号关联的RACH资源时，所述目标RACH资源通过SFN特有的系统消息或者cell/TRP特有的系统消息配置。
在一些实施方式中，所述选择模块，进一步地用于以下至少一项：
根据预设优先级准则，选择所述目标RACH资源；
根据第一参考信号和/或第二参考信号的测量结果，选择所述目标RACH资源；
根据时域、频域或空域，选择所述目标RACH资源；
根据所述终端的类型或终端的状态或业务的类型，选择所述目标RACH资源。
在一些实施方式中，所述选择模块，进一步地用于以下至少一项：
优先选择与所述第一参考信号关联的RACH资源；
优先选择非竞争随机接入CFRA RACH资源；
优先选择与所述第二参考信号关联的RACH资源；
按照预设优先级顺序选择所述目标RACH资源。
在一些实施方式中，所述选择模块，进一步地用于以下至少一项：
当所述第一参考信号的测量结果高于第一门限时，选择与所述第一参考信号关联的RACH资源；或者，当所述第一参考信号的测量结果不高于第二门限时，选择与所述第二参考信号关联的RACH资源；
当所述第二参考信号的测量结果高于第三门限时，选择与所述第二参考信号关联的RACH资源；或者，当所述第二参考信号的测量结果不高于第四门限时，选择与所述第一参考信号关联的RACH资源；
当第三参考信号的测量结果高于第四参考信号的测量结果第五门限时，选择与所述第三参考信号关联的RACH资源，所述第五门限大于或等于0，所述第三参考信号为所述第一参考信号或者所述第二参考信号，所述第四参考信号为所述第一参考信号或者所述第二参考信号；
选择与所述第一参考信号和所述第二参考信号中测量结果最高的参考信号关联的RACH资源。
在一些实施方式中，所述选择模块，进一步地用于：
选择与目标参考信号关联的RACH资源，所述目标参考信号为在发起随机接入前最新接收到参考信号。
在一些实施方式中，所述选择模块，进一步地用于：
选择与目标参考信号关联的RACH资源，所述目标参考信号为在发起随机接入前最新接收到的测量结果大于第一门限的参考信号。
在一些实施方式中，当同时存在第一参考信号和第二参考信号时，所述装置还包括：
第一处理模块，用于当所述第一参考信号的测量结果低于预设参考门限时，接收或测量所述第二参考信号。
在一些实施方式中，当同时存在第一参考信号和第二参考信号时，所述装置还包括：
第二处理模块，用于在发起随机接入之前，接收SFN特有的系统消息和/或cell/TRP特有的系统消息；和/或，在发起随机接入之前，接收或测量所述第二参考信号。
在一些实施方式中，SFN范围内的所有小区的RACH资源相同，并由SFN特有的系统消息配置，或者由cell/TRP特有的系统消息配置相同的内容。
在一些实施方式中，所述接入模块还用于：
当在RACH过程中发生SFN变化或者SFN范围内的小区变化时，基于SFN特有的参考信号关联的RACH资源继续RACH过程。
在一些实施方式中，SFN范围内的所有小区的RACH资源独立，并由SFN特有的系统消息配置，或者由cell/TRP特有的系统消息单独配置。
在一些实施方式中，所述接入模块还用于：
当在RACH过程中发生SFN变化或者SFN范围内的小区变化时，中止所述RACH过程或基于SFN特有的参考信号关联的RACH资源重启RACH过程。
在一些实施方式中，所述装置还包括：
第二处理模块，用于在前导码preamble传输之前如果发生SFN范围内的小区改变，接收cell/TRP特有的系统消息；或者，在前导码preamble传输之前如果发生SFN的改变或者SFN之间的小区改变，接收SFN特有的系统消 息。
在一些实施方式中，当网络部署有高频范围和低频范围时，SFN特有的小区中包括所述低频范围内的小区，cell/TRP特有的小区中包括所述高频范围内的小区；
或者，
当网络包括卫星通信网络时，SFN特有的小区中包括HAPS小区或高轨卫星小区，cell/TRP特有的小区中包括低轨卫星小区或地面基站覆盖的小区
在本申请实施例中，使用与SFN特有的参考信号和/或cell/TRP特有的参考信号关联的RACH资源发起随机接入，能够实现RACH快速接入，有效节省终端功耗。
本申请实施例中的随机接入装置可以是装置，也可以是终端中的部件、集成电路、或芯片。该装置可以是移动终端，也可以为非移动终端。示例性的，移动终端可以包括但不限于上述所列举的终端的类型，非移动终端可以为服务器、网络附属存储器(Network Attached Storage，NAS)、个人计算机(personal computer，PC)、电视机(television，TV)、柜员机或者自助机等，本申请实施例不作具体限定。
本申请实施例中的随机接入装置可以为具有操作系统的装置。该操作系统可以为安卓(Android)操作系统，可以为ios操作系统，还可以为其他可能的操作系统，本申请实施例不作具体限定。
图4为实现本申请实施例的一种终端的硬件结构示意图。
该终端400包括但不限于：射频单元401、网络模块402、音频输出单元403、输入单元404、传感器405、显示单元406、用户输入单元407、接口单元408、存储器409、以及处理器410等部件。
本领域技术人员可以理解，终端400还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器410逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图4中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元404可以包括图形处理器 (Graphics Processing Unit，GPU)4041和麦克风4042，图形处理器4041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元406可包括显示面板4061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板4061。用户输入单元407包括触控面板4071以及其他输入设备4072。触控面板4071，也称为触摸屏。触控面板4071可包括触摸检测装置和触摸控制器两个部分。其他输入设备4072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元401将来自无线接入网侧设备的下行数据接收后，给处理器410处理；另外，将上行的数据发送给无线接入网侧设备。通常，射频单元401包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器409可用于存储软件程序或指令以及各种数据。存储器409可主要包括存储程序或指令区和存储数据区，其中，存储程序或指令区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器409可以包括高速随机存取存储器，还可以包括非易失性存储器，其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。
处理器410可包括一个或多个处理单元；可选的，处理器410可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序或指令等，调制解调处理器主要处理无线通信，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器410中。
其中，处理器410，用于选择与第一参考信号和/或第二参考信号关联的目标随机接入信道RACH资源；
处理器410，还用于使用所述目标RACH资源发起随机接入；
其中，所述第一参考信号为单频网SFN特有的参考信号，所述第二参考 信号为小区或传输接收点cell/TRP特有的参考信号。
可选地，当目标RACH资源为与第一参考信号关联的RACH资源时，所述目标RACH资源通过SFN特有的系统消息或者cell/TRP特有的系统消息配置。
可选地，所述处理器410，进一步地用于以下至少一项：
根据预设优先级准则，选择所述目标RACH资源；
根据第一参考信号和/或第二参考信号的测量结果，选择所述目标RACH资源；
根据时域、频域或空域，选择所述目标RACH资源；
根据所述终端的类型或终端的状态或业务的类型，选择所述目标RACH资源。
可选地，所述处理器410，进一步地用于以下至少一项：
优先选择与所述第一参考信号关联的RACH资源；
优先选择非竞争随机接入CFRA RACH资源；
优先选择与所述第二参考信号关联的RACH资源；
按照预设优先级顺序选择所述目标RACH资源。
可选地，所述处理器410，进一步地用于以下至少一项：
当所述第一参考信号的测量结果高于第一门限时，选择与所述第一参考信号关联的RACH资源；或者，当所述第一参考信号的测量结果不高于第二门限时，选择与所述第二参考信号关联的RACH资源；
当所述第二参考信号的测量结果高于第三门限时，选择与所述第二参考信号关联的RACH资源；或者，当所述第二参考信号的测量结果不高于第四门限时，选择与所述第一参考信号关联的RACH资源；
当第三参考信号的测量结果高于第四参考信号的测量结果第五门限时，选择与所述第三参考信号关联的RACH资源，所述第三门限大于或等于0，所述第三参考信号为所述第一参考信号或者所述第二参考信号，所述第四参考信号为所述第一参考信号或者所述第二参考信号；
选择与所述第一参考信号和所述第二参考信号中测量结果最高的参考信号关联的RACH资源。
可选地，所述处理器410，进一步地用于：
选择与目标参考信号关联的RACH资源，所述目标参考信号为在发起随机接入前最新接收到参考信号。
可选地，所述处理器410，进一步地用于：
选择与目标参考信号关联的RACH资源，所述目标参考信号为在发起随机接入前最新接收到的测量结果大于第一门限的参考信号。
可选地，当同时存在第一参考信号和第二参考信号时，所述处理器410还用于当所述第一参考信号的测量结果低于预设参考门限时，接收或测量所述第二参考信号。
可选地，当同时存在第一参考信号和第二参考信号时，所述处理器410还用于在发起随机接入之前，接收SFN特有的系统消息和/或cell/TRP特有的系统消息；和/或，在发起随机接入之前，接收或测量所述第二参考信号。
可选地，SFN范围内的所有小区的RACH资源相同，并由SFN特有的系统消息配置，或者由cell/TRP特有的系统消息配置相同的内容。
可选地，所述处理器410还用于：
当在RACH过程中发生SFN变化或者SFN范围内的小区变化时，基于SFN特有的参考信号关联的RACH资源继续执行RACH过程。
可选地，SFN范围内的所有小区的RACH资源独立，并由SFN特有的系统消息配置，或者由cell/TRP特有的系统消息单独配置。
可选地，所述处理器410还用于：
当在RACH过程中发生SFN变化或者SFN范围内的小区变化时，中止所述RACH过程或基于SFN特有的参考信号关联的RACH资源重启RACH过程。
可选地，所述处理器410还用于在前导码preamble传输之前如果发生SFN范围内的小区改变，接收cell/TRP特有的系统消息；或者，在前导码preamble传输之前如果发生SFN的改变或者SFN之间的小区改变，接收SFN特有的系统消息。
可选地，当网络部署有高频范围和低频范围时，SFN特有的小区中包括所述低频范围内的小区，cell/TRP特有的小区中包括所述高频范围内的小区；
或者，当网络包括卫星通信网络时，SFN特有的小区中包括HAPS小区或高轨卫星小区，cell/TRP特有的小区中包括低轨卫星小区或地面基站覆盖的小区
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述随机接入方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行终端程序或指令，实现如第一方面所述的方法，或实现上述随机接入方法实施例的各个过程；或者用于运行无线接入网侧设备程序或指令，实现上述随机接入方法实施例的各个过程；或者用于运行核心网侧设备程序或指令或，实现上述随机接入方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通 过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (34)

  1. 一种随机接入方法，应用于终端，包括：
    选择与第一参考信号和/或第二参考信号关联的目标随机接入信道RACH资源；
    使用所述目标RACH资源发起随机接入；
    其中，所述第一参考信号为单频网SFN特有的参考信号，所述第二参考信号为小区或传输接收点cell/TRP特有的参考信号。
  2. 根据权利要求1所述的方法，其中，当目标RACH资源为与第一参考信号关联的RACH资源时，所述目标RACH资源通过SFN特有的系统消息或者cell/TRP特有的系统消息配置。
  3. 根据权利要求1所述的方法，其中，所述选择与第一参考信号和/或第二参考信号关联的目标随机接入信道RACH资源，包括以下至少一项：
    根据预设优先级准则，选择所述目标RACH资源；
    根据第一参考信号和/或第二参考信号的测量结果，选择所述目标RACH资源；
    根据时域、频域或空域，选择所述目标RACH资源；
    根据所述终端的类型或终端的状态或业务的类型，选择所述目标RACH资源。
  4. 根据权利要求3所述的方法，其中，所述根据预设优先级准则，选择所述目标RACH资源，包括以下至少一项：
    优先选择与所述第一参考信号关联的RACH资源；
    优先选择非竞争随机接入CFRA RACH资源；
    优先选择与所述第二参考信号关联的RACH资源；
    按照预设优先级顺序选择所述目标RACH资源。
  5. 根据权利要求3所述的方法，其中，所述根据第一参考信号和/或第二参考信号的测量结果，选择所述目标RACH资源，包括以下至少一项：
    当所述第一参考信号的测量结果高于第一门限时，选择与所述第一参考信号关联的RACH资源；或者，当所述第一参考信号的测量结果不高于第二 门限时，选择与所述第二参考信号关联的RACH资源；
    当所述第二参考信号的测量结果高于第三门限时，选择与所述第二参考信号关联的RACH资源；或者，当所述第二参考信号的测量结果不高于第四门限时，选择与所述第一参考信号关联的RACH资源；
    当第三参考信号的测量结果高于第四参考信号的测量结果第五门限时，选择与所述第三参考信号关联的RACH资源，所述第五门限大于或等于0，所述第三参考信号为所述第一参考信号或者所述第二参考信号，所述第四参考信号为所述第一参考信号或者所述第二参考信号；
    选择与所述第一参考信号和所述第二参考信号中测量结果最高的参考信号关联的RACH资源。
  6. 根据权利要求3所述的方法，其中，所述根据时域、频域或空域，选择所述目标RACH资源，包括：
    选择与目标参考信号关联的RACH资源，所述目标参考信号为在发起随机接入前最新接收到的参考信号。
  7. 根据权利要求3所述的方法，其中，所述根据时域、频域或空域，选择所述目标RACH资源，包括：
    选择与目标参考信号关联的RACH资源，所述目标参考信号为在发起随机接入前最新接收到的测量结果大于第一门限的参考信号。
  8. 根据权利要求1所述的方法，其中，当同时存在第一参考信号和第二参考信号时，所述方法还包括：
    当所述第一参考信号的测量结果低于预设参考门限时，接收或测量所述第二参考信号。
  9. 根据权利要求1所述的方法，其中，当同时存在第一参考信号和第二参考信号时，所述方法还包括：
    在发起随机接入之前，接收SFN特有的系统消息和/或cell/TRP特有的系统消息；
    和/或，
    在发起随机接入之前，接收或测量所述第二参考信号。
  10. 根据权利要求2所述的方法，其中，
    SFN范围内的所有小区的RACH资源相同，并由SFN特有的系统消息配置，或者由cell/TRP特有的系统消息配置相同的内容。
  11. 根据权利要求10所述的方法，其中，
    当在RACH过程中发生SFN变化或者SFN范围内的小区变化时，基于SFN特有的参考信号关联的RACH资源继续执行RACH过程。
  12. 根据权利要求2所述的方法，其中，
    SFN范围内的所有小区的RACH资源独立，并由SFN特有的系统消息配置，或者由cell/TRP特有的系统消息单独配置。
  13. 根据权利要求12所述的方法，其中，
    当在RACH过程中发生SFN变化或者SFN范围内的小区变化时，中止所述RACH过程或基于SFN特有的参考信号关联的RACH资源重启RACH过程。
  14. 根据权利要求12所述的方法，还包括：
    在前导码preamble传输之前如果发生SFN范围内的小区改变，接收cell/TRP特有的系统消息；或者，
    在前导码preamble传输之前如果发生SFN的改变或者SFN之间的小区改变，接收SFN特有的系统消息。
  15. 根据权利要求1所述的方法，其中，
    当网络部署有高频范围和低频范围时，SFN特有的小区中包括所述低频范围内的小区，cell/TRP特有的小区中包括所述高频范围内的小区；
    或者，
    当网络包括卫星通信网络时，SFN特有的小区中包括HAPS小区或高轨卫星小区，cell/TRP特有的小区中包括低轨卫星小区或地面基站覆盖的小区。
  16. 一种随机接入装置，应用于终端，包括：
    选择模块，用于选择与第一参考信号和/或第二参考信号关联的目标随机接入信道RACH资源；
    接入模块，用于使用所述目标RACH资源发起随机接入；
    其中，所述第一参考信号为单频网SFN特有的参考信号，所述第二参考信号为小区或传输接收点cell/TRP特有的参考信号。
  17. 根据权利要求16所述的装置，其中，当目标RACH资源为与第一参考信号关联的RACH资源时，所述目标RACH资源通过SFN特有的系统消息或者cell/TRP特有的系统消息配置。
  18. 根据权利要求16所述的装置，其中，所述选择模块，进一步地用于以下至少一项：
    根据预设优先级准则，选择所述目标RACH资源；
    根据第一参考信号和/或第二参考信号的测量结果，选择所述目标RACH资源；
    根据时域、频域或空域，选择所述目标RACH资源；
    根据所述终端的类型或终端的状态或业务的类型，选择所述目标RACH资源。
  19. 根据权利要求18所述的装置，其中，所述选择模块，进一步地用于以下至少一项：
    优先选择与所述第一参考信号关联的RACH资源；
    优先选择非竞争随机接入CFRA RACH资源；
    优先选择与所述第二参考信号关联的RACH资源；
    按照预设优先级顺序选择所述目标RACH资源。
  20. 根据权利要求18所述的装置，其中，所述选择模块，进一步地用于以下至少一项：
    当所述第一参考信号的测量结果高于第一门限时，选择与所述第一参考信号关联的RACH资源；或者，当所述第一参考信号的测量结果不高于第二门限时，选择与所述第二参考信号关联的RACH资源；
    当所述第二参考信号的测量结果高于第三门限时，选择与所述第二参考信号关联的RACH资源；或者，当所述第二参考信号的测量结果不高于第四门限时，选择与所述第一参考信号关联的RACH资源；
    当第三参考信号的测量结果高于第四参考信号的测量结果第五门限时，选择与所述第三参考信号关联的RACH资源，所述第五门限大于或等于0，所述第三参考信号为所述第一参考信号或者所述第二参考信号，所述第四参考信号为所述第一参考信号或者所述第二参考信号；
    选择与所述第一参考信号和所述第二参考信号中测量结果最高的参考信号关联的RACH资源。
  21. 根据权利要求18所述的装置，其中，所述选择模块，进一步地用于：
    选择与目标参考信号关联的RACH资源，所述目标参考信号为在发起随机接入前最新接收到的参考信号。
  22. 根据权利要求18所述的装置，其中，所述选择模块，进一步地用于：
    选择与目标参考信号关联的RACH资源，所述目标参考信号为在发起随机接入前最新接收到的测量结果大于第一门限的参考信号。
  23. 根据权利要求16所述的装置，其中，当同时存在第一参考信号和第二参考信号时，所述装置还包括：
    第一处理模块，用于当所述第一参考信号的测量结果低于预设参考门限时，接收或测量所述第二参考信号。
  24. 根据权利要求16所述的装置，其中，当同时存在第一参考信号和第二参考信号时，所述装置还包括：
    第二处理模块，用于在发起随机接入之前，接收SFN特有的系统消息和/或cell/TRP特有的系统消息；和/或，在发起随机接入之前，接收或测量所述第二参考信号。
  25. 根据权利要求17所述的装置，其中，
    SFN范围内的所有小区的RACH资源相同，并由SFN特有的系统消息配置，或者由cell/TRP特有的系统消息配置相同的内容。
  26. 根据权利要求25所述的装置，其中，所述接入模块还用于：
    当在RACH过程中发生SFN变化或者SFN范围内的小区变化时，基于SFN特有的参考信号关联的RACH资源继续执行RACH过程。
  27. 根据权利要求17所述的装置，其中，
    SFN范围内的所有小区的RACH资源独立，并由SFN特有的系统消息配置，或者由cell/TRP特有的系统消息单独配置。
  28. 根据权利要求27所述的装置，其中，所述接入模块还用于：
    当在RACH过程中发生SFN变化或者SFN范围内的小区变化时，中止所述RACH过程或基于SFN特有的参考信号关联的RACH资源重启RACH 过程。
  29. 根据权利要求27所述的装置，还包括：
    第二处理模块，用于在前导码preamble传输之前如果发生SFN范围内的小区改变，接收cell/TRP特有的系统消息；或者，在前导码preamble传输之前如果发生SFN的改变或者SFN之间的小区改变，接收SFN特有的系统消息。
  30. 根据权利要求16所述的装置，其中，
    当网络部署有高频范围和低频范围时，SFN特有的小区中包括所述低频范围内的小区，cell/TRP特有的小区中包括所述高频范围内的小区；
    或者，
    当网络包括卫星通信网络时，SFN特有的小区中包括HAPS小区或高轨卫星小区，cell/TRP特有的小区中包括低轨卫星小区或地面基站覆盖的小区。
  31. 一种终端，包括处理器，存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求1至15任一项所述的随机接入方法的步骤。
  32. 一种可读存储介质，其中，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1至15任一项所述的随机接入方法的步骤。
  33. 一种芯片，包括处理器和通信接口，其中，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如权利要求1至15任一项所述的随机接入方法的步骤。
  34. 一种程序产品，所述程序产品被存储在非易失的存储介质中，所述程序产品被配置成被至少一个处理器执行以实现如权利要求1至15任一项所述的随机接入方法的步骤。
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