WO2022068741A1 - 连接建立方法、装置、设备及存储介质 - Google Patents

连接建立方法、装置、设备及存储介质 Download PDF

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Publication number
WO2022068741A1
WO2022068741A1 PCT/CN2021/120763 CN2021120763W WO2022068741A1 WO 2022068741 A1 WO2022068741 A1 WO 2022068741A1 CN 2021120763 W CN2021120763 W CN 2021120763W WO 2022068741 A1 WO2022068741 A1 WO 2022068741A1
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Prior art keywords
sfn
cell
terminal equipment
target cell
connection
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PCT/CN2021/120763
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English (en)
French (fr)
Inventor
陈力
Original Assignee
维沃移动通信有限公司
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Priority to EP21874401.9A priority Critical patent/EP4203563A4/en
Priority to JP2023502987A priority patent/JP2023539991A/ja
Publication of WO2022068741A1 publication Critical patent/WO2022068741A1/zh
Priority to US18/181,677 priority patent/US20230217512A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0077—Transmission or use of information for re-establishing the radio link of access information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H04W36/00692—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink using simultaneous multiple data streams, e.g. cooperative multipoint [CoMP], carrier aggregation [CA] or multiple input multiple output [MIMO]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • 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
    • 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 connection establishment method, apparatus, device and storage medium.
  • TRP transmission reception point
  • cell free or single frequency network SFN single frequency Newtork
  • SFN single frequency Newtork
  • the purpose of the embodiments of the present application is to provide a connection establishment method, apparatus, device, and storage medium, which can enable a terminal device UE to establish a connection with less power consumption.
  • an embodiment of the present application provides a method for establishing a connection, and the method includes:
  • the terminal equipment UE residing on or connected to the SFN cell group SFN receives the access-related information sent by the network side equipment;
  • the target cell is a specific cell or a transceiver point of Cell/TRP.
  • an embodiment of the present application provides a method for establishing a connection, and the method includes:
  • the access-related information is used to instruct the terminal equipment UE to establish a connection with the target cell;
  • the target cell is a specific cell or a transceiver point of Cell/TRP.
  • an embodiment of the present application provides a connection establishment device, the device comprising:
  • the first receiving module is used for the terminal equipment UE residing or connected to the SFN cell group SFN to receive the access related information sent by the network side equipment;
  • connection module configured to establish a connection with the target cell based on the access-related information
  • the target cell is a specific cell or a transceiver point of Cell/TRP.
  • an embodiment of the present application provides a connection establishment device, the device comprising:
  • a first sending module configured to send access-related information to terminal equipment UE that resides or is connected to the SFN cell group SFN;
  • the access-related information is used to instruct the terminal equipment UE to establish a connection with the target cell;
  • the target cell is a specific cell or a transceiver point of Cell/TRP.
  • an embodiment of the present application provides a terminal device UE, including a processor, a memory, and a program or instruction stored in the memory and executable on the processor, the program or instruction being executed by the The processor implements the steps of the connection establishment method described in the first aspect when executed.
  • an embodiment of the present application provides a network-side device, including a processor, a memory, and a program or instruction stored in the memory and executable on the processor, the program or instruction being The processor implements the steps of the connection establishment method described in the second aspect when executed.
  • an embodiment of the present application provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the implementation is as described in the first aspect or the second aspect The steps of the connection establishment method.
  • an embodiment of the present application provides a program product, where the program product is stored in a non-volatile readable storage medium, and when the program product is executed by a processor, the first aspect or the second aspect is implemented The steps of the connection establishment method described above.
  • the terminal equipment UE that resides in or is connected to the SFN cell group SFN when the terminal equipment UE that resides in or is connected to the SFN cell group SFN needs to establish a connection with the target cell, it directly obtains the access-related information for establishing the connection with the target cell from the network side equipment. Establish a connection with the target cell; compared with the prior art, the terminal equipment UE resides in the Cell/TRP to initiate random access or establish a connection, which avoids the terminal equipment UE frequently performing cell measurements and cell changes, effectively saving the power consumption of the terminal equipment UE. Save network overhead.
  • FIG. 1 is a schematic diagram of a single frequency network cell group SFN provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of a random access process provided by an embodiment of the present application.
  • connection establishment method provided by an embodiment of the present application
  • FIG. 4 is a schematic diagram of an application scenario of a high frequency range and a low frequency range provided by an embodiment of the present application
  • connection establishment method provided by an embodiment of the present application.
  • connection establishment method 6 is a schematic flowchart of another connection establishment method provided by an embodiment of the present application.
  • FIG. 7 is a schematic flowchart of still another connection establishment method provided by an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of still another connection establishment method provided by an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of still another connection establishment method provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a connection establishment apparatus provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of another connection establishment apparatus provided by an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a hardware structure of a terminal device UE implementing an embodiment of the present application
  • FIG. 13 is a schematic diagram of a hardware structure of a network side device implementing an embodiment of the present application.
  • 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 device UE may also be referred to as a terminal or a terminal device or a user terminal (User Equipment, UE).
  • the terminal device UE may be a mobile phone, a tablet computer (Tablet Personal Computer), or a laptop computer (Laptop Computer). Or known as notebook computer, personal digital assistant (Personal Digital Assistant, PDA), palmtop computer, netbook, ultra-mobile personal computer (ultra-mobile personal computer, UMPC), mobile Internet Device (Mobile Internet Device, MID), wearable Device (Wearable Device) or Vehicle-mounted Equipment (VUE), Pedestrian Terminal (PUE) and other terminal-side devices, wearable devices include: bracelets, headphones, glasses, etc.
  • the network-side device may be a base station, where the base station may be referred to as a Node B, an evolved Node B, an access point, a base transceiver station (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 Point Receiving 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 specific technical vocabulary.
  • the base station is taken as an example, but the specific type of the base station is not limited.
  • SFN Single-Frequency Network
  • the single frequency network SFN transmission scheme means that multiple cells or multiple transmission points send the same signal, there is no co-frequency interference between different cells, and multiple signals can improve the signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR), transmission quality and coverage effect.
  • SINR Signal to Interference plus Noise Ratio
  • FIG. 1 is a schematic diagram of a single frequency network cell group SFN provided by an embodiment of the present application; as shown in FIG. 1 is a single frequency network cell group SFN super cell composed of 7 cells.
  • multiple cells forming a single frequency network cell group SFN can share one cell ID, that is, the ID of the super cell.
  • Multiple cells can transmit signals by means of SFN transmission. For example, each cell transmits with a wide beam, and a terminal device UE can receive the wide beam sent by multiple cells at a certain moment, thereby obtaining diversity gain.
  • the terminal equipment UE does not need to frequently perform cell reselection or handover related operations between cells.
  • the network For the terminal equipment UE in the Idle state or the Inactive state, the network provides the priority of each frequency point during the moving process.
  • the terminal equipment UE resides in the current serving cell for more than a second time
  • the preset duration stipulates that the second preset duration is 1s, and the terminal equipment UE reselects the target cell or the neighboring cell.
  • the terminal equipment UE reselects to the target cell or the neighboring cell.
  • the terminal equipment UE reselects to the target cell or the neighboring cell.
  • the cell reselection method is the same as the frequency priority of the current serving or camping cell.
  • the cell reselection method of the same-frequency cell is the same.
  • the terminal device UE in the idle state or the Inactive state can trigger the connection establishment process by receiving the paging message sent by the network side device, so as to send and receive data.
  • the base station gNB can put its protocol stack entities on different control units respectively. 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
  • Media Access Control, MAC Media Access 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 network search including synchronization signal block (Synchronization Signal Block, SSB) synchronization and reception of system information. Specifically, you can 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 the information in the Master Information Block (MIB).
  • PSS Primary Synchronization Signals
  • SSS Secondary Synchronization Signals
  • PBCH Physical Broadcast Channel
  • the RACH process is divided into a contention random access process and a non-contention random access process.
  • FIG. 2 is a schematic diagram of a random access process provided by an embodiment of the present application; as shown in FIG. 2 , the contention random access process includes four-step access of Message1-Message4, and the non-contention random access process includes two-step access of Message1-Message2 enter.
  • Both the contention random access and the non-contention random access Message2 are used to 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.
  • radio network temporary identity Radio access Radio Network Tempory Identity, RA-RNTI
  • the terminal equipment UE sends the same preamble preamble in the same PRACH (Physical Random Access Channel) resource, after receiving Message2, it can also be based on the UL grant in Message2.
  • Message3 is sent, and the terminal device UE can carry the identifier of the UE on the Message3, and can simultaneously start the contention resolution timer when the Message3 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 identity in Message4. After receiving the Message4, the terminal device UE can determine whether the Message4 is its own Message4 based on the UE identifier carried therein, so as to determine whether the competition is successful.
  • PRACH Physical Random Access Channel
  • 2-step RACH can be cited: that is, the RACH process includes two steps: the terminal equipment UE sends MessageA to the network side equipment, and then receives the MessageB sent by the network side equipment.
  • the MessageA includes the functions of the above-mentioned Message1 or Message1 and Message3
  • the MessageB includes the functions of the above-mentioned Message2 or Message2 and Message4.
  • a DRX (Discontinuous Reception, discontinuous reception) cycle may be introduced.
  • the terminal equipment UE can monitor the PDCCH (Physical Downlink Control Channel, physical downlink control channel) at the positions corresponding to the PF (Paging Frame) and PO (Paging occasion) calculated according to the terminal identity and several configurations of the network side equipment, so that the PDCCH Receive paging messages on the indicated resource.
  • the terminal identifier may be IMSI (International Mobile Subscriber Identity, International Mobile Subscriber Identity) in LTE, and may be 5G-S-TMSI in NR.
  • the paging message can be sent to the UE through all base stations within a certain range, such as less than or equal to the tracking area. all base stations in a certain area.
  • connection establishment method provided by the embodiment of the present application will be described in detail below through specific embodiments and application scenarios with reference to the accompanying drawings.
  • FIG. 3 is a schematic flowchart of a connection establishment method provided by an embodiment of the present application. As shown in FIG. 3 , the method includes the following steps:
  • Step 300 the terminal equipment UE residing on or connected to the SFN cell group SFN receives the access related information sent by the network side equipment;
  • Step 310 establishing a connection with the target cell based on the access-related information
  • the target cell is a specific cell or a transceiver point of Cell/TRP.
  • SFN is the scope of a super cell, which includes several cells or TRPs, and is usually called an SFN super cell as an 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.
  • the cell/TRP corresponding to this layer is a specific cell or TRP of the cell/TRP.
  • the terminal equipment UE camps on or accesses the SFN or SFN layer, that is, camps on or accesses a cell unique to SFN; the terminal equipment UE camps on or accesses the cell/TRP or cell/TRP layer, that is, camps on or accesses the cell/TRP layer.
  • the terminal equipment UE initiates connection establishment or RACH to the SFN or SFN layer, that is, the terminal equipment initiates the establishment or RACH to the SFN-specific cell; the terminal equipment UE initiates connection establishment or RACH to the cell/TRP layer or cell/TRP, that is, the terminal equipment The establishment or RACH is initiated to the cell/TRP specific cell.
  • the reference signal (RS), system message (SI), paging message (paging), etc. on the SFN layer are called SFN-specific RS, SI, paging, etc.
  • RS, SI, paging, etc. in the cell/TRP layer are 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 reference signals can be SSBs, namely SFN specific SSBs and cell/TRP specific SSBs, and the reference signals can also be channel state information reference signals (Channel-State Information reference Signal, CSI-RS), cell reference signals ( Cell Reference Signal (CRS), sounding reference signal (Sounding Reference Signal, SRS), demodulation reference signal (Demodulation Reference Signal, DMRS) and other reference signals.
  • CSI-RS Channel state information reference Signal
  • CRS Cell Reference Signal
  • SRS Sounding reference signal
  • SRS demodulation reference signal
  • DMRS demodulation Reference Signal
  • the terminal equipment UE in the prior art resides in the cell/TRP layer when initiating random access or connection establishment, it also resides in the cell/TRP layer when initiating RACH or connection establishment. It is impossible to effectively use the SFN layer to reside or establish a connection, so as to achieve the purpose of power saving of the terminal equipment UE, resulting in a very high power consumption of the terminal equipment UE.
  • the terminal equipment UE may reside in the SFN cell group when the terminal equipment UE is in the Idle or Inactive state, and the terminal equipment UE is ready to enter the connected state or has accessed the SFN layer or established a connection with the SFN layer. , access the target cell;
  • the terminal device UE may directly obtain access-related information for establishing a connection with the target cell from the network side device during the process of preparing to enter the connected state or having accessed the SFN layer or establishing a connection with the SFN layer.
  • the access related information may be the physical layer cell identifier PCI of the target cell, the synchronization grid Sync raster of the target cell, the reference signal of the target cell and the random access RACH resources related to the reference signal of the target cell, etc.
  • the terminal equipment UE provides any information or combination of access resources, such as preamble configuration, random access opportunity (RO) resources, and random access to other time domain, frequency domain, or code domain resources.
  • the terminal device UE After acquiring the access-related information, the terminal device UE can establish a connection with the target cell based on the access-related information.
  • the target cell may be a cell or a transceiver point TRP within the SFN range, or may be a cell or a transceiver point TRP outside the SFN range, which is not limited in this embodiment.
  • the terminal equipment UE that resides in or is connected to the SFN cell group SFN when the terminal equipment UE that resides in or is connected to the SFN cell group SFN needs to establish a connection with the target cell, it directly obtains the access-related information for establishing the connection with the target cell from the network side equipment. Establish a connection with the target cell; compared with the prior art, the terminal equipment UE resides in the Cell/TRP to initiate random access or establish a connection, which avoids the terminal equipment UE frequently performing cell measurements and cell changes, effectively saving the power consumption of the terminal equipment UE. Save network overhead.
  • the access-related information includes at least one of the following:
  • Random access RACH resources related to the reference signal of the target cell are Random access RACH resources related to the reference signal of the target cell.
  • the terminal equipment UE camped on the SFN layer is about to access the SFN layer but has not yet accessed, that is, when the terminal equipment UE camped on the SFN establishes a connection with the target cell
  • the connection can be directly established with the target cell; or the access-related information sent by the network side device can be received, and the connection can be established with the target cell based on the access-related information.
  • the terminal equipment UE residing on the SFN layer can receive the access-related information sent by the network-side equipment, and establish a connection with the target cell based on the access-related information; wherein,
  • the access-related information may include at least one of the following:
  • the physical layer cell identifier PCI of the target cell that is, Cell/TRP specific PCI;
  • Sync raster of the target cell that is, Cell/TRP specific Sync raster
  • the reference signal of the target cell which can be Cell/TRP specific SSB related information, such as SSB number, SMTC, etc.;
  • Random access RACH resources related to the reference signal of the target cell such as preamble configuration, random access opportunity (Rach occasion, RO) resources, random access resources in other time domain, frequency domain, or code domain.
  • the terminal equipment UE needs to perform a cell selection or reselection operation before initiating random access.
  • the terminal equipment UE initiates RACH random access or connection establishment on the selected/reselected target cell cell/TRP.
  • the access-related information is indicated by at least one of the following:
  • the SFN-specific system information SI indication (SFN-specific system information SI indication
  • the terminal device UE may first acquire at least one of the following: SFN-specific system information SI, system information SI of the target cell, and reference signal of the target cell; and then based on the indication of the above at least one item to obtain access-related information.
  • the terminal equipment UE may first obtain the reference information of the target cell, obtain the PCI of the target cell based on the reference signal of the target cell, then obtain the system information SI of the target cell based on the PCI of the target cell, and finally obtain the reference signal correlation of the target cell.
  • the random access RACH resource and establish a connection with the target cell based on the RACH resource.
  • the terminal equipment UE may first obtain the cell/TRP specific SI of the target cell, and then obtain the RACH resources associated with the cell/TRP specific SSB of the target cell.
  • the system information SI of the SFN can indicate three types of access-related information: the physical layer cell identifier PCI of the target cell, namely the Cell/TRP specific PCI, and the synchronization grid Sync raster of the target cell, namely the Cell/TRP specific Sync
  • the synchronization signal block SSB related information of the raster and the target cell that is, any one, or any two, or all of the Cell/TRP specific SSB related information.
  • the system information SI corresponding to the single-frequency cell group is only In the case of indicating part of the access-related information, the access-related information that is not indicated can be obtained through blind detection by the terminal equipment UE;
  • the Cell/TRP specific SSB related information of the target cell may be SSB number, SMTC, and the like.
  • the method further includes:
  • the terminal equipment UE camped on the SFN When the terminal equipment UE camped on the SFN establishes a connection with the target cell or before establishing the connection, it receives at least one of the following items:
  • the terminal equipment UE since the access-related information can be indicated by the system information SI of the target cell or the reference signal of the target cell, the terminal equipment UE that is about to establish a connection with the target cell or before the connection is established can first receive The network side device sends the system information SI indication of the target cell or the reference signal of the target cell, and further obtains access-related information, and establishes a connection with the target cell.
  • the receiving network side equipment sends the The access-related information includes:
  • the handover command or the reconfiguration instruction message sent by the network side device is received, and the access related information is acquired based on the handover command or the reconfiguration instruction message.
  • the terminal equipment UE that resides on the SFN layer and the SFN layer, or after the terminal equipment UE has accessed the SFN layer, it can access the target cell of the cell/TRP layer based on the instruction of the network side equipment cell/TRP.
  • the network side equipment may send a handover command or a reconfiguration instruction message to the terminal equipment UE, using It is used to instruct the terminal equipment UE to transfer to the target cell cell/TRP of the cell/TRP layer.
  • the handover command or the reconfiguration instruction message includes access-related information used to provide the terminal equipment UE with establishing a connection with the target cell, such as system information SI of the target cell or random access related to the reference signal of the target cell. RACH resources, etc.
  • the terminal equipment UE can then connect to the target cell cell/TRP based on the access-related information.
  • the handover command or reconfiguration instruction message may be synchronous reconfiguration (reconfiguration with sync or handover command or mobility control information), that is, an instruction message sent by the network side device to the terminal device UE, instructing the terminal device UE to perform Handover operation or cell change.
  • the receiving access-related information sent by the network side equipment includes:
  • the random access related messages include: Message2 in the non-contention random access process, or Message2 or Message4 in the contention random access process, or MessageB in the two-step random access RACH process.
  • the network side equipment may carry the access related information when sending random access related information to the terminal equipment UE, which is used to indicate that the terminal equipment UE is in During the process of establishing a connection with the SFN layer, the target cell cell/TRP connected to the cell/TRP layer is transferred.
  • the terminal device UE when it accesses the SFN layer, it can initiate the RACH through the SFN specific RACH resource. After sending the random access request, the terminal device UE may receive random access related information returned by the network side device, wherein the random access related information carries a handover command or a reconfiguration instruction message, wherein the handover command or reconfiguration
  • the indication message includes access-related information and is used to instruct the terminal equipment UE to transfer to the target cell cell/TRP of the cell/TRP layer. After the terminal equipment UE receives the handover command or the reconfiguration instruction message, it transfers to the target cell cell/TRP connected to the cell/TRP layer to complete the connection establishment.
  • the terminal equipment UE residing in the SFN cell group uses the random access related message in the process of establishing a connection with the SFN layer to directly obtain the information used to communicate with the target cell.
  • the access-related information of the connection established by the cell further saves the power consumption of the terminal equipment UE and saves the network overhead on the basis of avoiding frequent cell measurements by the terminal equipment UE.
  • establishing a connection with the SFN is based on the random access RACH resource associated with the SFN-specific reference signal.
  • the terminal equipment UE when establishing a connection between the terminal equipment UE residing on the SFN layer and the SFN layer, or the terminal equipment UE that has already accessed the SFN layer, it is based on SFN-specific
  • the connection is established with reference to the random access RACH resource associated with the signal.
  • the method further includes: before the terminal device UE establishes a connection with the SFN, obtains from the SFN-specific system information SI or the cell/TRP-specific system information SI the random access RACH resource.
  • the terminal device UE may first obtain the SFN-specific SSB-associated RACH resource from the SFN-specific SI or Cell/TRP-specific SI, and based on The random access RACH resource establishes a connection with the SFN layer.
  • the establishing a connection with the target cell includes: initiating an RRC connection establishment or a RACH process in the target cell.
  • the terminal device UE may initiate an RRC connection establishment or RACH process in the target cell based on the access-related information.
  • the target cell may be a cell/TRP that is currently camping on or accessing SFN, or a cell/TRP that is currently camping or accessing outside of the SFN range, that is, the target cell may belong to the current SFN or another SFN, Or not belong to any SFN.
  • the access-related information includes target data link information
  • Establishing a connection with the target cell based on the access-related information includes: based on the target data link information, sending and receiving all or part of the service data of the terminal equipment UE through the target cell.
  • the terminal equipment UE residing on the SFN layer has successfully accessed the SFN layer, if there is a need for data transmission with the target cell, all or part of the service data can be sent and received through the target cell based on the instructions of the network side equipment.
  • the terminal equipment UE can receive the access-related information sent by the network side equipment, specifically the target data link information; the terminal equipment UE is receiving After the access-related information is obtained, all or part of the service data can be sent and received through the target cell based on the target data link information.
  • all or part of the service data is sent and received through the target cell, which may include configuring the target cell as a secondary cell group (SCG) of the currently connected cell or as a secondary cell (Secondary cell) of the currently connected cell , Scell).
  • SCG secondary cell group
  • Secondary cell secondary cell
  • Several existing protocol layers may also be split into the target cell, and the existing protocol layers include at least one of the following: RRC, SDAP, PDCP, RLC, MAC, PHY.
  • the method further includes:
  • the terminal equipment UE When the terminal equipment UE changes between different cells/TRPs within the SFN range, it does not perform cell selection reselection or cell handover.
  • the terminal equipment UE when the terminal equipment UE changes between different cells/TRPs within the SFN range, it does not need to perform frequent cell reselection or handover related operations between cells, so frequent cell measurements can be avoided, and the energy of the terminal equipment UE can be effectively saved. At the same time, it reduces the signaling interaction when establishing a connection with the target cell and saves network overhead.
  • the method further includes:
  • the terminal equipment UE camps on the SFN in an inactive state or an idle state, and the terminal equipment UE distinguishes the cell/TRP-specific cell from the SFN-specific cell based on at least one of the following:
  • the terminal equipment UE when the terminal equipment UE is in the idle state Idle or Inactive state, it can reside in the SFN layer;
  • the terminal equipment UE supporting the SFN Feature in the idle or inactive state, it can choose to reside in the SFN layer.
  • the terminal equipment UE that does not support the SFN feature in the idle or inactive state, choose to reside in the Cell/TRP layer.
  • the terminal equipment UE can distinguish the SFN layer and the cell/TRP layer based on the cell identity PCI and/or the synchronization grid sync Raster.
  • an SFN-specific cell identifier PCI or a unique synchronization grid sync Raster can be set to distinguish the SFN and the Cell/TRP.
  • the terminal device UE may determine that the cell it resides on is the SFN layer based on the SFN-specific cell identifier PCI or the unique synchronization grid sync Raster.
  • the method further includes at least one of the following:
  • the paging message is an SFN-specific paging message or a cell/TRP-specific paging message
  • a system message is received at the SFN; the system message is an SFN-specific system message or a cell/TRP-specific system message.
  • the terminal device UE when it resides in the SFN layer, it can perform at least one of the following operations:
  • Operation 1 Receive a paging message at the SFN layer.
  • the paging message may be an SFN-specific paging message SFN specific paging, or a cell/TRP-specific paging message cell/TRP specific paging.
  • Operation 2 Receive system messages at the SFN layer.
  • the system message may be the SFN specific system message SFN specific SISI, or the cell/TRP specific system message cell/TRP specific SI.
  • the SFN-specific cells when the network is deployed with a high-frequency range and a low-frequency range, include cells in the low-frequency range; the cells or TRPs in the SFN include the high-frequency range. cells within the frequency range;
  • the SFN-specific cells include high-altitude platform station HAPS cells or high-orbit satellite cells, and the cells or TRPs in the SFN include low-orbit satellite cells or cells covered by ground base stations.
  • FIG. 4 is a schematic diagram of an application scenario of a high frequency range and a low frequency range provided by an embodiment of the present application.
  • a low frequency (eg FR1) cell has a larger coverage than a high frequency (eg FR2) cell.
  • FR2 cell may be continuously replaced, but the FR1 cell is not replaced.
  • the terminal equipment UE initially activates an FR2 cell or switches FR2 cells, 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, the measurement time can reach the level of seconds when certain conditions are met, as follows:
  • the above-mentioned measurement time is long, and at the same time, the UE consumes a large amount of power.
  • the cell/TRP corresponding to the low-frequency layer in the low-frequency range can be regarded as the SFN or super cell
  • the cell corresponding to the high-frequency layer in the high-frequency range can be regarded as the SFN or super cell.
  • cell/TRP is regarded as cell/TRP in SFN/super cell.
  • the high-orbit satellite cell HAPS/satellite cell can be regarded as SFN or super cell, the cell/TRP corresponding to the low-orbit satellite within this range, or this Other ordinary cells/TRPs within the range are regarded as cells/TRPs within the SFN/super cell.
  • the terminal equipment UE that resides in or is connected to the SFN cell group SFN when the terminal equipment UE that resides in or is connected to the SFN cell group SFN needs to establish a connection with the target cell, it directly obtains the access-related information for establishing the connection with the target cell from the network side equipment. Establish a connection with the target cell; compared with the prior art, the terminal equipment UE resides in the Cell/TRP to initiate random access or establish a connection, which avoids the terminal equipment UE frequently performing cell measurements and cell changes, effectively saving the power consumption of the terminal equipment UE. Save network overhead.
  • FIG. 5 is a schematic flowchart of another connection establishment method provided by an embodiment of the present application. As shown in FIG. 5 , the method includes the following steps:
  • Step 500 Send access-related information to terminal equipment UE that resides in or is connected to the SFN cell group SFN;
  • the access-related information is used to instruct the terminal equipment UE to establish a connection with the target cell;
  • the target cell is a specific cell or a transceiver point of Cell/TRP.
  • the terminal equipment UE in the prior art resides in the cell/TRP layer when initiating random access or connection establishment, it also resides in the cell/TRP layer when initiating RACH or connection establishment. It is impossible to effectively use the SFN layer to reside or establish a connection, so as to achieve the purpose of power saving of the terminal equipment UE, resulting in a very high power consumption of the terminal equipment UE.
  • the terminal equipment UE may reside in the SFN cell group when the terminal equipment UE is in the Idle or Inactive state, and the terminal equipment UE is ready to enter the connected state or has accessed the SFN layer or established a connection with the SFN layer. , sending access-related information to the terminal equipment UE, so that the terminal equipment UE accesses the target cell;
  • the network side equipment may send the terminal equipment UE access related information for establishing a connection with the target cell.
  • the access related information may be the physical layer cell identifier PCI of the target cell, the synchronization grid Sync raster of the target cell, the reference signal of the target cell and the random access RACH resources related to the reference signal of the target cell, etc.
  • the terminal equipment UE provides any information or combination of access resources.
  • the terminal device UE After acquiring the access-related information, the terminal device UE can establish a connection with the target cell based on the access-related information.
  • the target cell may be a cell or a transceiver point TRP within the SFN range, or may be a cell or a transceiver point TRP outside the SFN range, which is not limited in this embodiment.
  • the network side equipment when the terminal equipment UE that is camping on or connected to the SFN cell group SFN needs to establish a connection with the target cell, the network side equipment directly sends the terminal equipment UE the access for establishing the connection with the target cell.
  • the terminal equipment UE resides in the Cell/TRP to initiate random access or establish a connection, which avoids the terminal equipment UE frequently performing cell measurement and cell change, effectively saving the terminal equipment UE power consumption and network overhead.
  • the access-related information includes at least one of the following:
  • Random access RACH resources related to the reference signal of the target cell are Random access RACH resources related to the reference signal of the target cell.
  • the access related information can be sent to the terminal equipment UE, so that it can directly establish a connection with the target cell.
  • the network side equipment can send access-related information to the terminal equipment UE, so that the terminal equipment UE can communicate with the target cell based on the access-related information.
  • the access-related information may include at least one of the following:
  • the physical layer cell identifier PCI of the target cell that is, Cell/TRP specific PCI;
  • Sync raster of the target cell that is, Cell/TRP specific Sync raster
  • the reference signal of the target cell which can be Cell/TRP specific SSB related information, such as SSB number, SMTC, etc.;
  • Random access RACH resources related to the reference signal of the target cell such as preamble configuration, random access opportunity (Rach occasion, RO) resources, random access resources in other time domain, frequency domain, or code domain.
  • the terminal equipment UE needs to perform a cell selection or reselection operation before initiating random access.
  • the terminal equipment UE initiates RACH random access or connection establishment on the selected/reselected target cell cell/TRP.
  • the access-related information is indicated by at least one of the following:
  • the SFN-specific system information SI indication (SFN-specific system information SI indication
  • At least one of the following may be sent first: SFN-specific system information SI, system information SI of the target cell, and reference signal of the target cell; According to at least one of the above-mentioned instructions, access-related information is obtained.
  • the reference information of the target cell may be first sent to the terminal equipment UE, so that the terminal equipment UE obtains the PCI of the target cell based on the reference signal of the target cell, then obtains the system information SI of the target cell, and finally obtains the reference signal correlation of the target cell.
  • Random access RACH resource so that the terminal equipment UE establishes a connection with the target cell based on the RACH resource.
  • the cell/TRP specific SI of the target cell may be sent to the terminal equipment UE first, so that the terminal equipment UE obtains the RACH resources associated with the small target cell/TRP specific SSB.
  • the system information SI of the SFN can indicate three types of access-related information: the physical layer cell identifier PCI of the target cell, namely the Cell/TRP specific PCI, and the synchronization grid Sync raster of the target cell, namely the Cell/TRP specific Sync
  • the synchronization signal block SSB related information of the raster and the target cell that is, any one, or any two, or all of the Cell/TRP specific SSB related information.
  • the system information SI corresponding to the single-frequency cell group is only In the case of indicating part of the access-related information, the access-related information that is not indicated can be obtained through blind detection by the terminal equipment UE;
  • the Cell/TRP specific SSB related information of the target cell may be, for example, SSB number, SMTC, and the like.
  • the method further includes:
  • the terminal equipment UE camped on the SFN When the terminal equipment UE camped on the SFN establishes a connection with the target cell or before the connection is established, it sends at least one of the following items to the terminal equipment UE:
  • the network-side device can send a message to the terminal that is about to establish a connection with the target cell or before the connection is established.
  • the equipment UE sends the system information SI indication of the target cell or the reference signal of the target cell, so that the terminal equipment UE obtains access-related information and establishes a connection with the target cell.
  • the sending access related information include:
  • a handover command or a reconfiguration instruction message is sent to the terminal device UE, where the handover command or the reconfiguration instruction message is used for the terminal device UE to acquire the access-related information.
  • the terminal equipment UE that resides on the SFN layer and the SFN layer, or after the terminal equipment UE has accessed the SFN layer, it can access the target cell cell of the cell/TRP layer based on the network side's instruction /TRP.
  • the network side equipment may send a handover command or a reconfiguration instruction message to the terminal equipment UE, using It is used to instruct the terminal equipment UE to transfer to the target cell cell/TRP of the cell/TRP layer.
  • the handover command or the reconfiguration instruction message includes access-related information used to provide the terminal equipment UE with establishing a connection with the target cell, such as system information SI of the target cell or random access related to the reference signal of the target cell. RACH resources, etc.
  • the terminal equipment UE can then connect to the target cell cell/TRP based on the access-related information.
  • the handover command or reconfiguration instruction message may be synchronous reconfiguration (reconfiguration with sync or handover command or mobility control information), that is, an instruction message sent by the network side device to the terminal device UE, instructing the terminal device UE to perform Handover operation or cell change.
  • the sending access-related information includes:
  • the random access related messages include: Message2 in the non-contention random access process, or Message2 or Message4 in the contention random access process, or MessageB in the two-step random access RACH process.
  • the network side equipment may carry the access related information when sending random access related information to the terminal equipment UE, which is used to indicate that the terminal equipment UE is in During the process of establishing a connection with the SFN layer, the target cell cell/TRP connected to the cell/TRP layer is transferred.
  • the terminal device UE when the terminal device UE accesses the SFN layer, it can initiate the RACH through the SFN specific RACH resource.
  • the network side device may return random access related information to the terminal device UE, wherein the random access related information carries a handover command or a reconfiguration instruction message, wherein the handover command Or the reconfiguration instruction message includes access-related information, which is used to instruct the terminal equipment UE to transfer to the target cell cell/TRP of the cell/TRP layer.
  • the terminal equipment UE After the terminal equipment UE receives the handover command or the reconfiguration instruction message, it transfers to the target cell cell/TRP connected to the cell/TRP layer to complete the connection establishment.
  • the network side equipment uses the random access related message in the process of establishing the connection with the SFN layer to carry the terminal equipment
  • the access-related information used by the device UE to establish a connection with the target cell can further save the power consumption of the terminal device UE and save the network overhead on the basis of avoiding frequent cell measurements by the terminal device UE.
  • the access-related information includes target data link information
  • the target data link information is used to indicate that all or part of the service data of the terminal equipment UE is sent and received through the target cell.
  • the network side equipment can instruct the terminal equipment UE to send and receive all or part of the service data through the target cell.
  • the network side equipment may send access-related information to the terminal equipment UE, specifically target data link information; After accessing the relevant information, all or part of the service data can be sent and received through the target cell based on the target data link information.
  • the method further includes at least one of the following:
  • the paging message is a SFN-specific paging message or a cell/TRP-specific paging message
  • a system message is sent to the terminal equipment UE residing in the SFN, where the system message is an SFN-specific system message or a cell/TRP-specific system message.
  • the terminal device UE when the terminal device UE resides in the SFN layer, at least one of the following operations can be performed:
  • Operation 1 Send a paging message to the terminal equipment UE camping on the SFN.
  • the paging message may be an SFN-specific paging message SFN specific paging, or a cell/TRP-specific paging message cell/TRP specific paging.
  • Operation 2 Send a system message to the terminal equipment UE residing in the SFN.
  • the system message may be the SFN specific system message SFN specific SISI, or the cell/TRP specific system message cell/TRP specific SI.
  • the SFN-specific cells when the network is deployed with a high-frequency range and a low-frequency range, include cells in the low-frequency range; the cells or TRPs in the SFN include the high-frequency range. cells within the frequency range;
  • the SFN-specific cells include high-altitude platform station HAPS cells or high-orbit satellite cells, and the cells or TRPs in the SFN include low-orbit satellite cells or cells covered by ground base stations.
  • the cell/TRP corresponding to the low-frequency layer in the low-frequency range can be regarded as the SFN or super cell super cell
  • the cell/TRP corresponding to the low-frequency layer in the low-frequency range can be regarded as the SFN or super cell.
  • the cell/TRP of the cell is regarded as the cell/TRP in the SFN/super cell.
  • the high-orbit satellite cell HAPS/satellite cell can be regarded as SFN or super cell, the cell/TRP corresponding to the low-orbit satellite within this range, or this Other ordinary cells/TRPs within the range are regarded as cells/TRPs within the SFN/super cell.
  • the network side equipment when the terminal equipment UE that is camping on or connected to the SFN cell group SFN needs to establish a connection with the target cell, the network side equipment directly sends the terminal equipment UE the access for establishing the connection with the target cell.
  • the terminal equipment UE resides in the Cell/TRP to initiate random access or establish a connection, which avoids the terminal equipment UE frequently performing cell measurement and cell change, effectively saving the terminal equipment UE power consumption and network overhead.
  • the execution body may be a connection establishment apparatus, or a control module in the connection establishment apparatus for executing the method for loading the connection establishment.
  • the method for establishing a connection establishment by a connection establishment device is used as an example to describe the method for establishing a connection provided by the embodiment of the present application.
  • FIG. 6 is a schematic flowchart of another connection establishment method provided by an embodiment of the present application. As shown in FIG. 6 , the method includes the following steps:
  • Step 600 the terminal equipment UE accesses the SFN layer
  • the terminal equipment UE changes from the state of camping on the single-frequency cell group SFN layer to successfully accessing the single-frequency cell group SFN layer, that is, establishing a connection with the SFN layer or a cell in the SFN layer.
  • Step 610 the terminal device UE receives the handover command or the reconfiguration instruction message sent by the network side device;
  • the network side device may send a handover command or a reconfiguration instruction message to the terminal device UE after the terminal device UE accesses the SFN layer;
  • the terminal After receiving the reconfiguration instruction message, the terminal can obtain access-related information for establishing a connection with the target cell based on the handover command or the reconfiguration instruction message, such as system information SI of the target cell or random access RACH resources related to the reference signal of the target cell. ;
  • Step 620 the terminal equipment UE establishes a connection with the target cell
  • the terminal device UE can initiate an RRC connection establishment or RACH process in the target cell based on the access-related information to establish a connection with the target cell.
  • FIG. 7 is a schematic flowchart of still another connection establishment method provided by an embodiment of the present application. As shown in FIG. 7 , the method includes the following steps:
  • Step 700 the terminal equipment UE accesses the SFN layer
  • the terminal equipment UE changes from the state of staying in the SFN layer to the state of accessing the SFN layer, that is, in the process of establishing a connection with the SFN layer.
  • Step 710 the terminal device UE receives the access related information sent by the network side device
  • the network side device may send random access related information to the terminal device UE during the process of the terminal device UE accessing the SFN layer, that is, in the process of the SFN layer initiating the RACH, and carry the random access related information in the random access related information.
  • handover command or reconfiguration instruction message
  • the terminal equipment UE After the terminal equipment UE receives the random access related information and obtains the handover command or reconfiguration instruction message carried in it, it can obtain the access related information for establishing a connection with the target cell based on the handover command or the reconfiguration instruction message, such as the system of the target cell.
  • the random access related information is Message2; if the random access process of the terminal device UE in the SFN layer is a contention random access process, then The random access related information is Message4; if the random access process of the terminal equipment UE in the SFN layer is a two-step competition random access process RACH, the random access related information is MessageB;
  • Step 720 the terminal equipment UE establishes a connection with the target cell
  • the terminal device UE may initiate an RRC connection establishment or RACH process in the target cell based on the access-related information to establish a connection with the target cell.
  • FIG. 8 is a schematic flowchart of another connection establishment method provided by an embodiment of the present application. As shown in FIG. 8 , the method includes the following steps:
  • Step 800 the terminal equipment UE prepares to access the SFN layer
  • the terminal equipment UE changes from the state of camping on the SFN layer to preparing to access the SFN layer, that is, the terminal equipment UE is in a state of about to establish a connection with a cell in the single-frequency cell group.
  • Step 810 the terminal equipment UE obtains the system information SI specific to the SFN;
  • the network side device may be a terminal device when the terminal device UE is about to access the SFN layer but has not yet accessed, that is, when the terminal device UE camped on the SFN establishes a connection with the target cell
  • the UE provides SFN-specific system information SI or system information SI of a target cell or a reference signal of the target cell for indicating access-related information; in this embodiment, the SFN-specific system information SI can be used as an example for description.
  • Step 820 the terminal equipment UE obtains access-related information for establishing a connection with the target cell
  • the terminal device UE After acquiring the SFN-specific system information SI, the terminal device UE can acquire access-related information based on the SFN-specific system information SI;
  • the access-related information is at least one of the following:
  • Random access RACH resources related to the reference signal of the target cell are Random access RACH resources related to the reference signal of the target cell.
  • Step 830 the terminal equipment UE establishes a connection with the target cell
  • the terminal device UE can initiate an RRC connection establishment or RACH process in the target cell based on the access-related information to establish a connection with the target cell.
  • FIG. 9 is a schematic flowchart of another connection establishment method provided by an embodiment of the present application. As shown in FIG. 9 , the method includes the following steps:
  • Step 900 the terminal equipment UE accesses the SFN layer
  • the terminal equipment UE changes from the state of camping on the single-frequency cell group SFN layer to successfully accessing the SFN layer, that is, establishing a connection with the SFN layer or a cell in the SFN layer.
  • Step 910 the terminal device UE receives the access related information sent by the network side device
  • the network side device may send access-related information to the terminal device UE after the terminal device UE accesses the SFN layer; in this embodiment, the access-related information may be target data link information;
  • the terminal device UE may obtain target data link information for data transmission to the target cell based on the access-related information;
  • Step 920 the terminal equipment UE sends and receives all or part of the service data through the target cell;
  • the terminal device UE can send and receive all or part of the service data through the target cell.
  • the execution body may be a connection establishment device, or a control module in the connection establishment device for executing the connection establishment method.
  • the connection establishment device provided by the embodiment of the present application is described by taking the connection establishment device executing the connection establishment method as an example.
  • FIG. 10 is a schematic structural diagram of a connection establishment apparatus provided by an embodiment of the present application. As shown in FIG. 10 , the apparatus includes: a first receiving module 1010 and a connection module 1020; wherein:
  • the first receiving module 1010 is configured to receive the access related information sent by the network side device, for the terminal device UE residing or connected to the SFN cell group SFN;
  • connection module 1020 configured to establish a connection with the target cell based on the access-related information
  • the target cell is a specific cell or a transceiver point of Cell/TRP.
  • the connection establishment device obtains the access-related information sent by the network-side device through the first receiving module 1010, and uses the connection module 1020 to obtain the access-related information based on the access-related information. Establish a connection with the target cell.
  • the terminal equipment UE that resides in or is connected to the SFN cell group SFN when the terminal equipment UE that resides in or is connected to the SFN cell group SFN needs to establish a connection with the target cell, it directly obtains the access-related information for establishing the connection with the target cell from the network side equipment. Establish a connection with the target cell; compared with the prior art, the terminal equipment UE resides in the Cell/TRP to initiate random access or establish a connection, which avoids the terminal equipment UE frequently performing cell measurements and cell changes, effectively saving the power consumption of the terminal equipment UE. Save network overhead.
  • the access-related information includes at least one of the following:
  • Random access RACH resources related to the reference signal of the target cell are Random access RACH resources related to the reference signal of the target cell.
  • the access-related information is indicated by at least one of the following:
  • the SFN-specific system information SI indication (SFN-specific system information SI indication
  • the apparatus further includes:
  • the second receiving module is configured to receive at least one of the following when the terminal equipment UE camped on the SFN establishes a connection with the target cell or before the connection is established:
  • the receiving module is further configured to: :
  • the handover command or the reconfiguration instruction message sent by the network side device is received, and the access related information is acquired based on the handover command or the reconfiguration instruction message.
  • the receiving module in the process of establishing a connection between the terminal equipment UE camped on the SFN and the SFN, is further configured to:
  • the random access related messages include: Message2 in the non-contention random access process, or Message2 or Message4 in the contention random access process, or MessageB in the two-step random access RACH process.
  • establishing a connection with the SFN is based on the random access RACH resource associated with the SFN-specific reference signal.
  • the apparatus further includes:
  • the obtaining module is used for the terminal equipment UE to obtain the random access RACH resource from the SFN-specific system information SI or the cell/TRP-specific system information SI before establishing a connection with the SFN.
  • the establishing a connection with the target cell includes: initiating an RRC connection establishment or a RACH process in the target cell.
  • the access-related information includes target data link information
  • connection module is further configured to: based on the target data link information, send and receive all or part of the service data of the terminal equipment UE through the target cell.
  • the apparatus further includes:
  • the handover module is used for the terminal equipment UE to not perform cell selection reselection or cell handover when switching between different cells/TRPs within the SFN range.
  • the apparatus further includes:
  • the camping module is used for the terminal equipment UE to camp on the SFN when the terminal equipment UE is in an inactive state or an idle state, and the terminal equipment UE distinguishes the cell/TRP-specific cell from the SFN-specific cell based on at least one of the following Community:
  • the apparatus when the terminal equipment UE resides in the SFN, the apparatus further includes at least one of the following:
  • a third receiving module configured to receive a paging message at the SFN; the paging message is a SFN-specific paging message or a cell/TRP-specific paging message;
  • the fourth receiving module is configured to receive a system message in the SFN; the system message is a system message specific to the SFN or a system message specific to a cell/TRP.
  • the SFN-specific cells when the network is deployed with a high-frequency range and a low-frequency range, include cells in the low-frequency range; the cells or TRPs in the SFN include the high-frequency range. cells within the frequency range;
  • the SFN-specific cells include high-altitude platform station HAPS cells or high-orbit satellite cells, and the cells or TRPs in the SFN include low-orbit satellite cells or cells covered by ground base stations.
  • the terminal equipment UE that resides in or is connected to the SFN cell group SFN when the terminal equipment UE that resides in or is connected to the SFN cell group SFN needs to establish a connection with the target cell, it directly obtains the access-related information for establishing the connection with the target cell from the network side equipment. Establish a connection with the target cell; compared with the prior art, the terminal equipment UE resides in the Cell/TRP to initiate random access or establish a connection, which avoids the terminal equipment UE frequently performing cell measurements and cell changes, effectively saving the power consumption of the terminal equipment UE. Save network overhead.
  • FIG. 11 is a schematic structural diagram of another connection establishment apparatus provided by an embodiment of the present application. As shown in FIG. 11 , the apparatus includes: a first sending module 1110; wherein:
  • a first sending module 1110 configured to send access-related information to terminal equipment UE that resides on or is connected to the SFN cell group SFN;
  • the access-related information is used to instruct the terminal equipment UE to establish a connection with the target cell;
  • the target cell is a specific cell or a transceiver point of Cell/TRP.
  • the connection establishment apparatus sends access-related information to the terminal equipment UE through the first sending module 1110, so that the terminal equipment UE can communicate with the terminal equipment UE based on the access-related information.
  • the target cell establishes a connection.
  • the network side equipment when the terminal equipment UE that is camping on or connected to the SFN cell group SFN needs to establish a connection with the target cell, the network side equipment directly sends the terminal equipment UE the access for establishing the connection with the target cell.
  • the terminal equipment UE resides in the Cell/TRP to initiate random access or establish a connection, which avoids the terminal equipment UE frequently performing cell measurement and cell change, effectively saving the terminal equipment UE power consumption and network overhead.
  • the access-related information includes at least one of the following:
  • Random access RACH resources related to the reference signal of the target cell are Random access RACH resources related to the reference signal of the target cell.
  • the access-related information is indicated by at least one of the following:
  • the SFN-specific system information SI indication (SFN-specific system information SI indication
  • the apparatus further includes:
  • the second sending module is configured to send at least one of the following to the terminal equipment UE when the terminal equipment UE camped on the SFN establishes a connection with the target cell or before the connection is established:
  • the first sending module further Used for:
  • a handover command or a reconfiguration instruction message is sent to the terminal device UE, where the handover command or the reconfiguration instruction message is used for the terminal device UE to acquire the access-related information.
  • the first sending module in the process of establishing a connection between the terminal equipment UE camped on the SFN and the SFN, is further configured to:
  • the random access related messages include: Message2 in the non-contention random access process, or Message2 or Message4 in the contention random access process, or MessageB in the two-step random access RACH process.
  • the access-related information includes target data link information
  • the target data link information is used to indicate that all or part of the service data of the terminal equipment UE is sent and received through the target cell.
  • the apparatus when the terminal equipment UE resides in the SFN, the apparatus further includes at least one of the following:
  • a third sending module configured to send a paging message to the terminal equipment UE residing in the SFN, where the paging message is an SFN-specific paging message or a cell/TRP-specific paging message;
  • the fourth sending module is configured to send a system message to the terminal equipment UE residing in the SFN, where the system message is a SFN-specific system message or a cell/TRP-specific system message.
  • the SFN-specific cells when the network is deployed with a high-frequency range and a low-frequency range, include cells in the low-frequency range; the cells or TRPs in the SFN include the high-frequency range. cells within the frequency range;
  • the SFN-specific cells include high-altitude platform station HAPS cells or high-orbit satellite cells, and the cells or TRPs in the SFN include low-orbit satellite cells or cells covered by ground base stations.
  • the network side equipment when the terminal equipment UE that is camping on or connected to the SFN cell group SFN needs to establish a connection with the target cell, the network side equipment directly sends the terminal equipment UE the access for establishing the connection with the target cell.
  • the terminal equipment UE resides in the Cell/TRP to initiate random access or establish a connection, which avoids the terminal equipment UE frequently performing cell measurement and cell change, effectively saving the terminal equipment UE power consumption and network overhead.
  • the connection establishment apparatus in this embodiment of the present application may be an apparatus, or may be a component, an integrated circuit, or a chip in a terminal device UE.
  • the apparatus may be a mobile electronic device or a non-mobile electronic device.
  • the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palmtop computer, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (personal digital assistant).
  • UMPC ultra-mobile personal computer
  • netbook or a personal digital assistant
  • non-mobile electronic devices can be servers, network attached storage (Network Attached Storage, NAS), personal computer (personal computer, PC), television (television, TV), teller machine or self-service machine, etc., this application Examples are not specifically limited.
  • Network Attached Storage NAS
  • personal computer personal computer, PC
  • television television
  • teller machine or self-service machine etc.
  • the connection establishment device in the embodiment of the present application may be a device with 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.
  • connection establishment apparatus provided in this embodiment of the present application can implement each process implemented by the connection establishment apparatus in the method embodiments of FIG. 3 to FIG. 9 , and to avoid repetition, details are not described here.
  • FIG. 12 is a schematic diagram of a hardware structure of a terminal device UE implementing an embodiment of the present application.
  • the terminal device UE1200 includes but is not limited to: a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1207, an interface unit 1208, a memory 1209, and a processor 1210, etc. part.
  • the terminal device UE1200 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 1210 through a power management system, so that the power management system can be used to manage charging, discharging, and power management. consumption management and other functions.
  • a power source such as a battery
  • the structure of the terminal equipment UE shown in FIG. 12 does not constitute a limitation on the terminal equipment UE.
  • the terminal equipment UE may include more or less components than the one shown in the figure, or combine some components, or arrange different components, here No longer.
  • the input unit 1204 may include a graphics processor (Graphics Processing Unit, GPU) 12041 and a microphone 12042. Such as camera) to obtain still pictures or video image data for processing.
  • the display unit 1206 may include a display panel 12061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 1207 includes a touch panel 12071 and other input devices 12072 .
  • the touch panel 12071 is also called a touch screen.
  • the touch panel 12071 may include two parts, a touch detection device and a touch controller.
  • Other input devices 12072 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 1201 processes the information from the network side device to the processor 1210 after receiving the information.
  • the radio frequency unit 1201 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 1209 may be used to store software programs or instructions as well as various data.
  • the memory 1209 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 1209 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 1210 may include one or more processing units; optionally, the processor 1210 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and 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 1210.
  • the processor 1210 is configured to establish a connection with a target cell based on the access-related information; wherein, the target cell is a cell or a transceiver point specific to Cell/TRP.
  • the processor 1210 is further configured to receive at least one of the following items when the terminal equipment UE camped on the SFN establishes a connection with the target cell or before the connection is established:
  • the processor 1210 is further configured to receive the handover sent by the network side device during the process of establishing a connection between the terminal equipment UE residing on the SFN and the SFN, or after the terminal equipment UE establishes a connection with the SFN.
  • a command or a reconfiguration instruction message, and the access-related information is acquired based on the handover command or the reconfiguration instruction message.
  • the processor 1210 is further configured to receive a random access related message sent by a network side device during the process of establishing a connection between the terminal equipment UE residing on the SFN and the SFN, the random access related message carries the access-related information;
  • the random access related messages include: Message2 in the non-contention random access process, or Message2 or Message4 in the contention random access process, or MessageB in the two-step random access RACH process.
  • the processor 1210 is further configured to obtain the random access RACH from the SFN-specific system information SI or the cell/TRP-specific system information SI before the terminal equipment UE establishes a connection with the SFN. resource.
  • the processor 1210 is further configured to initiate an RRC connection establishment or RACH process in the target cell.
  • the processor 1210 is further configured to, after the terminal equipment UE establishes a connection with the SFN, send and receive all or part of the service data of the terminal equipment UE through the target cell based on the target data link information, wherein:
  • the access-related information includes target data link information.
  • the processor 1210 is further configured to not perform cell selection and reselection or not to perform cell selection when the terminal equipment UE changes between different cells/TRPs within the SFN range when the terminal equipment UE resides in the SFN. switch.
  • the processor 1210 is further configured to camp on the SFN when the terminal equipment UE is in an inactive state or an idle state, and the terminal equipment UE distinguishes between a cell/TRP-specific cell and a cell based on at least one of the following:
  • processor 1210 is further configured to execute at least one of the following:
  • the paging message is an SFN-specific paging message or a cell/TRP-specific paging message
  • a system message is received at the SFN; the system message is an SFN-specific system message or a cell/TRP-specific system message.
  • the terminal equipment UE that resides in or is connected to the SFN cell group SFN when the terminal equipment UE that resides in or is connected to the SFN cell group SFN needs to establish a connection with the target cell, it directly obtains the access-related information for establishing the connection with the target cell from the network side equipment. Establish a connection with the target cell; compared with the prior art, the terminal equipment UE resides in the Cell/TRP to initiate random access or establish a connection, which avoids the terminal equipment UE frequently performing cell measurements and cell changes, effectively saving the power consumption of the terminal equipment UE. Save network overhead.
  • FIG. 13 is a schematic diagram of a hardware structure of a network side device implementing an embodiment of the present application.
  • the network side device 1300 includes: an antenna 1301 , a radio frequency device 1302 , and a baseband device 1303 .
  • the antenna 1301 is connected to the radio frequency device 1302 .
  • the radio frequency device 1302 receives information through the antenna 1301, and sends the received information to the baseband device 1303 for processing.
  • the baseband device 1303 processes the information to be sent and sends it to the radio frequency device 1302
  • the radio frequency device 1302 processes the received information and sends it out through the antenna 1301 .
  • the above-mentioned frequency band processing apparatus may be located in the baseband apparatus 1303 , and the method performed by the network side device in the above embodiments may be implemented in the baseband apparatus 1303 .
  • the baseband apparatus 1303 includes a processor 1304 and a memory 1305 .
  • the baseband device 1303 may include, for example, at least one baseband board on which a plurality of chips are arranged, as shown in FIG. 13 , one of the chips is, for example, the processor 1304 , which is connected to the memory 1305 to call a program in the memory 1305 to execute
  • the network devices shown in the above method embodiments operate.
  • the baseband device 1303 may further include a network interface 1306 for exchanging information with the radio frequency device 1302, and the interface is, for example, a common public radio interface (CPRI for short).
  • CPRI common public radio interface
  • the network-side device in this embodiment of the present invention further includes: instructions or programs that are stored in the memory 1305 and run on the processor 1304, and the processor 1304 invokes the instructions or programs in the memory 1305 to execute the modules shown in FIG. 11 .
  • the network side equipment when the terminal equipment UE that is camping on or connected to the SFN cell group SFN needs to establish a connection with the target cell, the network side equipment directly sends the terminal equipment UE the access for establishing the connection with the target cell.
  • the terminal equipment UE resides in the Cell/TRP to initiate random access or establish a connection, which avoids the terminal equipment UE frequently performing cell measurement and cell change, effectively saving the terminal equipment UE power consumption and network overhead.
  • Embodiments of the present application further provide a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, each process of the foregoing connection establishment method embodiment can be achieved, and can achieve the same In order to avoid repetition, the technical effect will not be repeated here.
  • the processor is the processor in the terminal device UE or the network side device 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 program or an instruction to implement the above connection establishment method embodiment
  • the chip includes a processor and a communication interface
  • the communication interface is coupled to the processor
  • the processor is configured to run a program or an instruction to implement the above connection establishment method embodiment
  • 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-a-chip, or a system-on-a-chip, or the like.
  • An embodiment of the present application provides a program product, where the program product is stored in a non-volatile readable storage medium, and when the program product is executed by a processor, implements each process of the foregoing connection establishment method embodiment, and can achieve The same technical effect, in order to avoid repetition, will not be repeated here.
  • the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform, and of course hardware can also be used, but in many cases the former is better implementation.
  • the technical solution of the present application can be embodied in the form of a software product in essence or in a part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, CD), including several instructions to make a terminal device UE (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of this application.
  • a terminal device UE which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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Abstract

本申请公开了一种连接建立方法、装置、设备及存储介质。该方法包括：驻留或连接到单频网小区组SFN的终端设备UE接收网络侧设备发送的接入相关信息；基于所述接入相关信息与目标小区建立连接；其中，所述目标小区为Cell/TRP特有的小区或收发点。

Description

连接建立方法、装置、设备及存储介质
相关申请的交叉引用
本申请主张在2020年09月29日在中国提交的中国专利申请号No.202011053589.3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，具体涉及一种连接建立方法、装置、设备及存储介质。
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；同时移动通信系统支持的应用场景越来越丰富，包括更多的高速场景；因此终端设备UE需要频繁地进行小区切换或小区重选，即带来更多的终端测量；这对终端设备UE的耗电是一个很大的挑战。
为了降低终端设备UE的耗电，无小区化cell free或者单频网络SFN(single frequency Newtork)将是密集网络dense network或者高速场景下的一种重要的部署场景；但是现有技术中，终端设备UE在建立连接时，仍然是驻留在小区层cell/TRP layer，当发起随机接入RACH或者连接建立时也是在小区层cell/TRP layer，对终端设备UE来说过于耗电。
因此，如何提出一种使终端设备UE省电的连接建立方法，成为亟需解决的问题。
发明内容
本申请实施例的目的是提供一种连接建立方法、装置、设备及存储介质，能够使终端设备UE在耗电量较小的情况下建立连接。
为了解决上述技术问题，本申请是这样实现的：
第一方面，本申请实施例提供了一种连接建立方法，该方法包括：
驻留或连接到单频网小区组SFN的终端设备UE接收网络侧设备发送的接入相关信息；
基于所述接入相关信息与目标小区建立连接；
其中，所述目标小区为Cell/TRP特有的小区或收发点。
第二方面，本申请实施例提供了一种连接建立方法，该方法包括：
向驻留或连接到单频网小区组SFN的终端设备UE发送接入相关信息；
所述接入相关信息用于指示所述终端设备UE与目标小区建立连接；
其中，所述目标小区为Cell/TRP特有的小区或收发点。
第三方面，本申请实施例提供了一种连接建立装置，该装置包括：
第一接收模块，用于驻留或连接到单频网小区组SFN的终端设备UE接收网络侧 设备发送的接入相关信息；
连接模块，用于基于所述接入相关信息与目标小区建立连接；
其中，所述目标小区为Cell/TRP特有的小区或收发点。
第四方面，本申请实施例提供了一种连接建立装置，该装置包括：
第一发送模块，用于向驻留或连接到单频网小区组SFN的终端设备UE发送接入相关信息；
所述接入相关信息用于指示所述终端设备UE与目标小区建立连接；
其中，所述目标小区为Cell/TRP特有的小区或收发点。
第五方面，本申请实施例提供了一种终端设备UE，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连接建立方法的步骤。
第六方面，本申请实施例提供了一种网络侧设备，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二方面所述的连接建立方法的步骤。
第七方面，本申请实施例提供了一种可读存储介质，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或第二方面所述的连接建立方法的步骤。
第八方面，本申请实施例提供了一种程序产品，所述程序产品存储在非易失性的可读存储介质，所述程序产品被处理器执行时实现如第一方面或第二方面所述的连接建立方法的步骤。
在本申请实施例中，驻留或连接到单频网小区组SFN的终端设备UE在需要与目标小区建立连接时，直接从网络侧设备获取用于与目标小区建立连接的接入相关信息后与目标小区建立连接；相比现有技术中终端设备UE驻留在Cell/TRP发起随机接入或建立连接，避免了终端设备UE频繁进行小区测量和小区变换，有效节省终端设备UE功耗并节省网络开销。
附图说明
图1是本申请实施例提供的一种单频网小区组SFN的示意图；
图2是本申请实施例提供的随机接入流程示意图；
图3是本申请实施例提供的一种连接建立方法流程示意图；
图4是本申请实施例提供的一种高频范围和低频范围应用场景示意图；
图5是本申请实施例提供的另一种连接建立方法流程示意图；
图6是本申请实施例提供的又一种连接建立方法流程示意图；
图7是本申请实施例提供的再一种连接建立方法流程示意图；
图8是本申请实施例提供的还一种连接建立方法流程示意图；
图9是本申请实施例提供的还一种连接建立方法流程示意图；
图10是本申请实施例提供的一种连接建立装置结构示意图；
图11是本申请实施例提供的另一种连接建立装置结构示意图；
图12是实现本申请实施例的一种终端设备UE的硬件结构示意图；
图13是实现本申请实施例的一种网络侧设备的硬件结构示意图。
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。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，终端设备UE也可以称作终端或终端设备或者用户终端(User Equipment，UE)，终端设备UE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。网络侧设备可以是基站，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：
1、单频网(Single-Frequency Network，SFN)介绍；
单频网SFN传输方案是指，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。
图1是本申请实施例提供的一种单频网小区组SFN的示意图；如图1所示是一个由7个小区构成的单频网小区组SFN super cell。
可以理解的是，组成单频网小区组SFN的多个小区可以共用一个cell ID，即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，某一时刻终端设备UE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，终端设备UE不需要在小区间频繁的进行小区重选或者切换相关操作。
2、空闲态/非激活态的终端设备UE的移动性；
对于处于空闲态Idle或Inactive状态的终端设备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，根据目标小区或邻小区的测量结果加入偏移量后计算获得目标小区或邻小区的测量评估值，并根据服务小区的测量结果加入偏移量后计算获得服务小区的测量评估值；
如果确定目标小区或邻小区的测量评估值比服务小区的测量评估值更好，且持续超过第一预设时长，例如网络配置的时长，且终端设备UE在当前服务小区驻留时间超过第二预设时长，例如协议约定第二预设时长为1s，则终端设备UE重选到该目标小区或邻小区。
对于高优先级异频(inter-frequency)或异技术(inter-RAT)邻小区，如果目标小区或邻小区的测量评估值超过第一预设门限值，且持续时间超过第三预设时长，例如网络配置的时长，则终端设备UE重选到该目标小区或邻小区。
对于低优先级异频(inter-frequency)或异技术(inter-RAT)邻小区，如果目标小区或邻小区的测量评估值大于第二预设门限值，且当前服务小区的测量评估值小于第二门限值，且持续超过第四预设时长，例如网络配置的时长，则终端设备UE重选到该目标小区或邻小区。
对于异频(inter-frequency)或异技术(inter-RAT)邻小区，在目标小区或邻小区频点优先级与当前服务或驻留小区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相同。
处于空闲态Idle或Inactive状态的终端设备UE可以通过接收网络侧设备发送的寻呼消息，触发连接建立过程，从而进行数据的收发。
3、集中控制单元(Centralized Unit，CU)和分布式单元(Distributed Unit，DU)分离介绍；
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。例如，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。例如，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。
4、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，可以先接收主同步信息(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。
5、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。
图2是本申请实施例提供的随机接入流程示意图；如图2所示，竞争的随机接入过程包括Message1-Message4四步接入，非竞争的随机接入过程包括Message1-Message2两步接入。
竞争的随机接入和非竞争的随机接入的Message2都是用于发送随机接入响应(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终端设备UE在同样的PRACH(Physical Random Access Channel，物理随机接入信道)资源发送同样的前导码preamble的问题，因此在接收完Message2后还可以根据Message2里的UL grant发送Message3，并且终端设备UE可以在Message3上携带UE的标识，在Message3发送时可以同时启动竞争解决timer。在竞争解决timer没超时前如果收到基站发送的Message4，则UE竞争解决成功。基站会在Message4携带UE标识。终端设备UE接收到Message4后可以基于其中携带的UE标识判断Message4是否为自己的Message4，从而判断自己是否竞争成功。
进一步，为了缩短接入系统时延，可以引用了2-step RACH：即包括两个步骤的RACH过程：分别是终端设备UE向网络侧设备发送MessageA，再接收网络侧设备下发的MessageB。其中的MessageA包括上述Message1或Message1与Message3的功能，MessageB包括上述Message2或Message2与Message4的功能。
6、寻呼消息Paging接收；
在LTE(Long Term Evolution，长期演进)或者NR(New Radio,新空口)系统中，为了节省UE的功耗，可以引入DRX(DiscontinuousReception，非连续接收)周期。终端设备UE可以在根据终端标识及网络侧设备的若干配置计算出来的PF(Paging Frame)和PO(Paging occasion)对应的位置去监测PDCCH(Physical Downlink Control Channel，物理下行控制信道)，从而在PDCCH指示的资源上收paging消息。其中，终端标识在LTE中可以是IMSI(International Mobile Subscriber Identity，国际移动用户识别码)，在NR中可以是5G-S-TMSI。
在终端设备UE处于空闲态的情况下，由于网络不知道UE的具体位置，所以核 心网在需要page终端设备UE时，paging消息可以通过一定范围内所有的基站发给UE，比如小于等于tracking area的某个区域内所有的基站。
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连接建立方法进行详细地说明。
图3是本申请实施例提供的一种连接建立方法流程示意图，如图3所示，该方法包括如下步骤：
步骤300，驻留或连接到单频网小区组SFN的终端设备UE接收网络侧设备发送的接入相关信息；
步骤310，基于所述接入相关信息与目标小区建立连接；
其中，所述目标小区为Cell/TRP特有的小区或收发点。
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。此layer对应的cell/TRP为cell/TRP特有的(specific)小区或TRP。终端设备UE驻留在或者接入SFN或者SFN layer，即是驻留在或者接入SFN特有的小区；终端设备UE驻留在或者接入cell/TRP或者cell/TRP layer，即是驻留在或者接入cell/TRP特有的小区。终端设备UE向SFN或者SFN layer发起连接建立或者RACH，即是终端设备向SFN特有的小区发起建立或者RACH；终端设备UE向cell/TRP layer或者cell/TRP发起连接建立或者RACH，即是终端设备向cell/TRP特有的小区发起建立或者RACH。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RS、SI、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。
具体地，由于现有技术中终端设备UE在发起随机接入或者连接建立时都是驻留在cell/TRP layer，当发起RACH或者连接建立时也是在cell/TRP layer。无法有效利用SFN layer驻留或者连接建立，从而达到终端设备UE省电的目的，导致终端设备UE十分耗电。
因此本实施例中，可以在终端设备UE处于空闲态Idle或Inactive状态时驻留在单频网小区组，在终端设备UE准备进入连接态或者已经接入SFN layer或者与SFN layer建立连接的过程中，接入目标小区；
具体地，终端设备UE可以在准备进入连接态或者已经接入SFN layer或者与SFN layer建立连接的过程中，从网络侧设备直接获取用于与目标小区建立连接的接入相关信息。本实施例中，接入相关信息可以是目标小区的物理层小区标识PCI，目标小区的同步栅格Sync raster，目标小区的参考信号以及目标小区的参考信号相关的随机接入RACH资源等可以为终端设备UE提供接入资源的任一项信息或者组合，比如前导码preamble配置、随机接入机会(Rach occasion,RO)资源、随机接入其它时域、频域、或者码域的资源。
终端设备UE获取接入相关信息后，可以基于接入相关信息与目标小区建立连接。
本实施例中，目标小区可以是SFN范围内的小区cell或收发点TRP，也可以是SFN范围外的小区cell或收发点TRP，本实施例对此不作限制。
在本申请实施例中，驻留或连接到单频网小区组SFN的终端设备UE在需要与目标小区建立连接时，直接从网络侧设备获取用于与目标小区建立连接的接入相关信息后与目标小区建立连接；相比现有技术中终端设备UE驻留在Cell/TRP发起随机接入或建立连接，避免了终端设备UE频繁进行小区测量和小区变换，有效节省终端设备UE功耗并节省网络开销。
可选地，基于上述任一实施例，驻留到所述SFN的终端设备UE与所述目标小区建立连接前或者建立连接时，所述接入相关信息包括以下至少一项：
目标小区的物理层小区标识PCI；
目标小区的同步栅格Sync raster；
目标小区的参考信号；
目标小区的参考信号相关的随机接入RACH资源。
具体地，当驻留在SFN layer的终端设备UE即将要接入SFN layer但还未接入的情况下，即当(when)驻留到所述SFN的终端设备UE与所述目标小区建立连接时，可以直接与目标小区建立连接；或者可以接收网络侧设备发送的接入相关信息，并基于接入相关信息与目标小区建立连接。
具体地，驻留在SFN layer的终端设备UE与目标小区建立连接建立连接之前(before)，可以接收网络侧设备发送的接入相关信息，并基于接入相关信息与目标小区建立连接；其中，接入相关信息可以包括以下至少一项：
目标小区的物理层小区标识PCI，即Cell/TRP specific PCI；
目标小区的同步栅格Sync raster，即Cell/TRP specific Sync raster；
目标小区的参考信号，可以是Cell/TRP specific SSB相关信息，例如SSB number，SMTC等；
目标小区的参考信号相关的随机接入RACH资源，比如前导码preamble配置、随机接入机会(Rach occasion,RO)资源、随机接入其它时域、频域、或者码域的资源。
本实施例中，终端设备UE在发起随机接入之前需要执行小区选择或重选操作。终端设备UE在所选择/重选的目标小区cell/TRP上发起RACH随机接入或连接建立。
可选地，基于上述任一实施例，所述接入相关信息通过以下至少一项指示：
所述SFN特有的系统信息SI指示；
目标小区的系统信息SI指示；
目标小区的参考信号指示。
具体地，终端设备UE在获取接入相关信息时，可以首先获取以下至少一项：SFN特有的系统信息SI，目标小区的系统信息SI以及目标小区的参考信号；然后基于上述至少一项的指示，获取接入相关信息。
例如，终端设备UE可以首先获取目标小区的参考信息，并基于目标小区的参考信号获取目标小区的PCI，进而基于目标小区的PCI获取目标小区的系统信息SI，最后获取到目标小区的参考信号相关的随机接入RACH资源；并基于该RACH资源与目标小区建立连接。
例如，终端设备UE可以首先获取目标小区的cell/TRP specific SI，进而获取目标小区的cell/TRP specific SSB关联的RACH资源。
具体地，本实施例中，SFN的系统信息SI可以指示三种接入相关信息目标小区的物理层小区标识PCI即Cell/TRP specific PCI、目标小区的同步栅格Sync raster即Cell/TRP specific Sync raster和目标小区的同步信号块SSB相关信息即Cell/TRP specific SSB相关信息中的任一种，或任两种，或全部都指示，可以理解的是，单频小区组对应的系统信息SI仅指示部分接入相关信息的情况下，其中没有指示的接入相关信息可以通过终端设备UE盲检测获得；
本实施例中，目标小区的Cell/TRP specific SSB相关信息可以是SSB number，SMTC等。
可选地，基于上述任一实施例，所述方法还包括：
驻留到所述SFN的终端设备UE与目标小区建立连接时或者建立连接前，接收以下至少一项：
目标小区的参考信号；
目标小区对应的系统信息SI。
具体地，本实施例中，由于接入相关信息可以通过目标小区的系统信息SI指示或目标小区的参考信号指示，因此，即将与目标小区建立连接时或者建立连接前的终端设备UE可以首先接收网络侧设备发送的目标小区的系统信息SI指示或目标小区的参考信号，并进一步获得接入相关信息，与目标小区建立连接。
可选地，基于上述任一实施例，驻留到所述SFN的终端设备UE与所述SFN建立连接的过程中，或终端设备UE与所述SFN建立连接后，所述接收网络侧设备发送的接入相关信息包括：
接收网络侧设备发送的切换命令或者重配指示消息，基于所述切换命令或者重配指示消息获取所述接入相关信息。
具体地，驻留到SFN layer的终端设备UE与SFN layer建立连接的过程中，或终端设备UE已经接入SFN layer后，可以基于网络侧设备的指示，接入到cell/TRP layer的目标小区cell/TRP。
具体地，驻留到SFN layer的终端设备UE与SFN layer建立连接的过程中，或终端设备UE已经接入SFN layer后，网络侧设备可以向终端设备UE发送切换命令或者重配指示消息，用于指示终端设备UE转移连接到cell/TRP layer的目标小区cell/TRP。
可以理解的是，切换命令或者重配指示消息中包括用于给终端设备UE提供与目 标小区建立连接的接入相关信息，比如目标小区的系统信息SI或目标小区的参考信号相关的随机接入RACH资源等。终端设备UE则可以基于该接入相关信息连接到目标小区cell/TRP。
在一种实现方式中，切换命令或重配指示消息可以是同步重配(reconfiguration with sync或handover command或者mobility control information)，即网络侧设备发送的指示消息给终端设备UE，指示终端设备UE进行切换操作或者变换小区。
可选地，基于上述任一实施例，驻留到所述SFN的终端设备UE与所述SFN建立连接的过程中，所述接收网络侧设备发送的接入相关信息包括：
接收网络侧设备发送的随机接入相关消息，所述随机接入相关消息中携带所述接入相关信息；
所述随机接入相关消息包括：无竞争随机接入过程中的Message2，或竞争随机接入过程中的Message2或Message4，或两步随机接入RACH过程中的MessageB。
具体地，驻留到SFN layer的终端设备UE与SFN layer建立连接的过程中，网络侧设备可以在向终端设备UE发送随机接入相关信息时携带接入相关信息，用于指示终端设备UE在与SFN layer建立连接的过程中转移连接到cell/TRP layer的目标小区cell/TRP。
具体地，终端设备UE在接入SFN layer时，可以通过SFN specific RACH资源发起RACH。在发送了随机接入请求后，终端设备UE可以接收网络侧设备返回的随机接入相关信息，其中，随机接入相关信息中携带有切换命令或者重配指示消息，其中，切换命令或者重配指示消息包括接入相关信息，用于指示终端设备UE转移连接到cell/TRP layer的目标小区cell/TRP。终端设备UE接收到切换命令或者重配指示消息后则转移连接到cell/TRP layer的目标小区cell/TRP完成连接建立。
在本申请实施例中，驻留在单频网小区组的终端设备UE在需要与目标小区建立连接时，利用与SFN layer建立连接的过程中的随机接入相关消息，直接获取用于与目标小区建立连接的接入相关信息，在避免终端设备UE频繁进行小区测量的基础上进一步节省终端设备UE功耗，并节省网络开销。
可选地，基于上述任一实施例，与所述SFN建立连接，是基于所述SFN特有的参考信号关联的随机接入RACH资源建立。
具体地，驻留到SFN layer的终端设备UE与SFN layer建立连接的过程中，或已经接入SFN layer的终端设备UE，在与SFN layer建立连接或发起随机接入时，是基于SFN特有的参考信号关联的随机接入RACH资源来建立连接。
可选地，基于上述任一实施例，所述方法还包括：终端设备UE在与所述SFN建立连接前，从所述SFN特有的系统信息SI，或cell/TRP特有的系统信息SI中获取所述随机接入RACH资源。
具体地，终端设备UE在基于SFN特有的参考信号关联的随机接入RACH资源来建立连接前，可以首先从SFN specific SI，或者Cell/TRP specific SI中获取SFN specific SSB关联的RACH资源，并基于该随机接入RACH资源与SFN layer建立连接。
可选地，基于上述任一实施例，所述与目标小区建立连接包括：在所述目标小区发起RRC连接建立或RACH过程。
具体地，终端设备UE在获取接入相关信息后，可以基于接入相关信息在目标小区发起RRC连接建立或RACH过程。其中的目标小区可以是当前驻留或接入SFN范围内的cell/TRP，也可以是当前驻留或接入SFN范围外的cell/TRP，即目标小区可能属于当前SFN，或者另一个SFN，或者不属于任何一个SFN。
可选地，基于上述任一实施例，终端设备UE与所述SFN建立连接后，所述接入相关信息包括目标数据链路信息；
基于所述接入相关信息与目标小区建立连接包括：基于所述目标数据链路信息，将所述终端设备UE的全部或部分业务数据通过目标小区收发。
具体地，驻留到SFN layer的终端设备UE已经成功接入SFN layer后，若有与目标小区进行数据传输的需求，可以基于网络侧设备的指示将全部或部分业务数据通过目标小区收发。
具体地，当驻留在SFN layer的终端设备UE已经成功接入SFN layer后，终端设备UE可以接收网络侧设备发送的接入相关信息，具体可以是目标数据链路信息；终端设备UE在接收到接入相关信息后，可以基于目标数据链路信息将全部或部分业务数据通过目标小区收发。
具体地，全部或者部分业务数据通过目标小区收发，可以包括将目标小区配置成目前已连接小区的一个辅小区组(Secondary cell group，SCG)或者配置成目前已连接小区的一个辅小区(Secondary cell，Scell)。也可以将现有的若干协议层分裂(split)到目标小区，现有的协议层包括以下至少之一：RRC，SDAP,PDCP,RLC,MAC,PHY。
可选地，基于上述任一实施例，终端设备UE驻留在所述SFN的情况下，所述方法还包括：
终端设备UE在SFN范围内不同cell/TRP之间变换时，不进行小区选择重选或不进行小区切换。
具体地，终端设备UE在SFN范围内不同cell/TRP之间变换时，不需要在小区间频繁的进行小区重选或者切换相关操作，因此可以避免频繁的小区测量，有效节省终端设备UE的能耗，同时降低与目标小区连接建立时的信令交互，节省网络开销。
可选地，基于上述任一实施例，所述方法还包括：
所述终端设备UE在非激活态或空闲态的情况下，驻留在所述SFN，终端设备UE基于以下至少一项区分cell/TRP特有的小区与所述SFN特有的小区：
小区标识PCI；
同步栅格sync Raster。
具体地，为了使终端设备UE能有效节省能耗，在终端设备UE处于空闲态Idle或Inactive状态时，可以驻留在SFN layer；
本实施例中，对于支持SFN Feature的终端设备UE，在idle或inactive态时，可以选择驻留在SFN layer。对于不支持SFN feature的终端设备UE，在idle或inactive态时，选择驻留在Cell/TRP layer。
因此，终端设备UE可以基于小区标识PCI和/或同步栅格sync Raster对SFN layer和cell/TRP layer进行区分。
例如，可以设置SFN特有的小区标识PCI或者特有的同步栅格sync Raster用于区 分所述SFN和所述Cell/TRP。终端设备UE可以基于SFN特有的小区标识PCI或者特有的同步栅格sync Raster确定驻留的小区是SFN layer。
可选地，基于上述任一实施例，终端设备UE驻留在所述SFN的情况下，所述方法还包括以下至少一项：
在所述SFN接收寻呼消息；所述寻呼消息是SFN特有的寻呼消息或者cell/TRP特有的寻呼消息；
在所述SFN接收系统消息；所述系统消息是SFN特有的系统消息或者cell/TRP特有的系统消息。
具体地，终端设备UE驻留在SFN layer时，可以执行如下操作至少之一：
操作一：在SFN layer接收寻呼消息。其中的寻呼消息可以是SFN特有的寻呼消息SFN specific paging，或者cell/TRP特有的寻呼消息cell/TRP specific paging。
操作二：在SFN layer接收系统消息。其中的系统消息可以是SFN特有的系统消息SFN specific SISI，或者cell/TRP特有的系统消息cell/TRP specific SI。
可选地，基于上述任一实施例，当网络部署有高频范围和低频范围的情况下，所述SFN特有的小区包括低频范围内的小区；所述SFN内的小区或TRP包括所述高频范围内的小区；
或者，
网络中包括卫星通信网络的情况下，所述SFN特有的小区包括高空平台站HAPS小区或高轨卫星小区，所述SFN内的小区或TRP包括低轨卫星小区或地面基站覆盖的小区。
具体地，图4是本申请实施例提供的一种高频范围和低频范围应用场景示意图，如图4所示，低频(例如FR1)小区相比高频(例如FR2)小区覆盖范围大。终端设备UE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。终端设备UE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，如下所示：
8ms+24*Trs+Tuncertainty_MAC+TL1-RSRP,measure+TL1-RSRP,report+THARQ+TFineTiming；
上述测量时间较长，同时会导致UE功耗较大。
因此，当网络部署有高频范围high-frequency和低频范围low frequency layers时，可以将低频范围low frequency layer对应的小区cell/TRP当作SFN或者超级小区super cell，高频high frequency layer对应的小区cell/TRP当作SFN/super cell内的cell/TRP。
同样地，对于卫星通信satellite or HAPS(High Altitude Platform Station)，可以将高轨卫星小区HAPS/satellite cell当作SFN或者super cell，在此范围内的低轨卫星对应的小区cell/TRP，或者此范围内的其它普通cell/TRP，当作SFN/super cell内的cell/TRP。
在本申请实施例中，驻留或连接到单频网小区组SFN的终端设备UE在需要与目标小区建立连接时，直接从网络侧设备获取用于与目标小区建立连接的接入相关信息后与目标小区建立连接；相比现有技术中终端设备UE驻留在Cell/TRP发起随机接入或建立连接，避免了终端设备UE频繁进行小区测量和小区变换，有效节省终端设备 UE功耗并节省网络开销。
图5是本申请实施例提供的另一种连接建立方法流程示意图，如图5所示，该方法包括如下步骤：
步骤500，向驻留或连接到单频网小区组SFN的终端设备UE发送接入相关信息；
所述接入相关信息用于指示所述终端设备UE与目标小区建立连接；
其中，所述目标小区为Cell/TRP特有的小区或收发点。
具体地，由于现有技术中终端设备UE在发起随机接入或者连接建立时都是驻留在cell/TRP layer，当发起RACH或者连接建立时也是在cell/TRP layer。无法有效利用SFN layer驻留或者连接建立，从而达到终端设备UE省电的目的，导致终端设备UE十分耗电。
因此本实施例中，可以在终端设备UE处于空闲态Idle或Inactive状态时驻留在单频网小区组，在终端设备UE准备进入连接态或者已经接入SFN layer或者与SFN layer建立连接的过程中，向终端设备UE发送接入相关信息，以使终端设备UE接入目标小区；
具体地，在终端设备UE在准备进入连接态或者已经接入SFN layer或者与SFN layer建立连接的过程中，网络侧设备可以向终端设备UE发送用于与目标小区建立连接的接入相关信息。本实施例中，接入相关信息可以是目标小区的物理层小区标识PCI，目标小区的同步栅格Sync raster，目标小区的参考信号以及目标小区的参考信号相关的随机接入RACH资源等可以为终端设备UE提供接入资源的任一项信息或者组合。
终端设备UE获取接入相关信息后，可以基于接入相关信息与目标小区建立连接。
本实施例中，目标小区可以是SFN范围内的小区cell或收发点TRP，也可以是SFN范围外的小区cell或收发点TRP，本实施例对此不作限制。
在本申请实施例中，在驻留或连接到单频网小区组SFN的终端设备UE需要与目标小区建立连接时，网络侧设备直接向终端设备UE发送用于与目标小区建立连接的接入相关信息；相比现有技术中终端设备UE驻留在Cell/TRP发起随机接入或建立连接，避免了终端设备UE频繁进行小区测量和小区变换，有效节省终端设备UE功耗并节省网络开销。
可选地，基于上述任一实施例，驻留到所述SFN的终端设备UE与所述目标小区建立连接前或者建立连接时，所述接入相关信息包括以下至少一项：
目标小区的物理层小区标识PCI；
目标小区的同步栅格Sync raster；
目标小区的参考信号；
目标小区的参考信号相关的随机接入RACH资源。
具体地，当驻留在SFN layer的终端设备UE即将要接入SFN layer但还未接入的情况下，即当(when)驻留到所述SFN的终端设备UE与所述目标小区建立连接时，可以向终端设备UE发送接入相关信息，使其直接与目标小区建立连接。
具体地，在驻留在SFN layer的终端设备UE与目标小区建立连接之前(before)，网络侧设备可以向终端设备UE发送接入相关信息，以使终端设备UE基于接入相关 信息与目标小区建立连接；其中，接入相关信息可以包括以下至少一项：
目标小区的物理层小区标识PCI，即Cell/TRP specific PCI；
目标小区的同步栅格Sync raster，即Cell/TRP specific Sync raster；
目标小区的参考信号，可以是Cell/TRP specific SSB相关信息，例如SSB number，SMTC等；
目标小区的参考信号相关的随机接入RACH资源，比如前导码preamble配置、随机接入机会(Rach occasion,RO)资源、随机接入其它时域、频域、或者码域的资源。
本实施例中，终端设备UE在发起随机接入之前需要执行小区选择或重选操作。终端设备UE在所选择/重选的目标小区cell/TRP上发起RACH随机接入或连接建立。
可选地，基于上述任一实施例，所述接入相关信息通过以下至少一项指示：
所述SFN特有的系统信息SI指示；
目标小区的系统信息SI指示；
目标小区的参考信号指示。
具体地，在向终端设备UE发送接入相关信息时，可以首先发送以下至少一项：SFN特有的系统信息SI，目标标小区的系统信息SI以及目标小区的参考信号；以使终端设备UE基于上述至少一项的指示，获取接入相关信息。
例如，可以首先向终端设备UE发送目标小区的参考信息，以使终端设备UE基于目标小区的参考信号获取目标小区的PCI，进而获取目标小区的系统信息SI，最后获取到目标小区的参考信号相关的随机接入RACH资源；以使终端设备UE基于该RACH资源与目标小区建立连接。
例如，可以首先向终端设备UE发送目标小区的cell/TRP specific SI，以使终端设备UE获取目标小的cell/TRP specific SSB关联的RACH资源。
具体地，本实施例中，SFN的系统信息SI可以指示三种接入相关信息目标小区的物理层小区标识PCI即Cell/TRP specific PCI、目标小区的同步栅格Sync raster即Cell/TRP specific Sync raster和目标小区的同步信号块SSB相关信息即Cell/TRP specific SSB相关信息中的任一种，或任两种，或全部都指示，可以理解的是，单频小区组对应的系统信息SI仅指示部分接入相关信息的情况下，其中没有指示的接入相关信息可以通过终端设备UE盲检测获得；
本实施例中，目标小区的Cell/TRP specific SSB相关信息，比如可以是SSB number，SMTC等。
可选地，基于上述任一实施例，所述方法还包括：
驻留到所述SFN的终端设备UE与目标小区建立连接时或者建立连接前，向终端设备UE发送以下至少一项：
目标小区的参考信号；
目标小区对应的系统信息SI。
具体地，本实施例中，由于接入相关信息可以通过目标小区的系统信息SI指示或目标小区的参考信号指示，因此，网络侧设备可以向即将与目标小区建立连接时或者建立连接前的终端设备UE发送目标小区的系统信息SI指示或目标小区的参考信号，以使终端设备UE获得接入相关信息，与目标小区建立连接。
可选地，基于上述任一实施例，驻留到所述SFN的终端设备UE与所述SFN建立连接的过程中，或终端设备UE与所述SFN建立连接后，所述发送接入相关信息包括：
向终端设备UE发送切换命令或者重配指示消息，所述切换命令或者重配指示消息用于终端设备UE获取所述接入相关信息。
具体地，驻留到SFN layer的终端设备UE与SFN layer建立连接的过程中，或终端设备UE已经接入SFN layer后，可以基于网络侧的指示，接入到cell/TRP layer的目标小区cell/TRP。
具体地，驻留到SFN layer的终端设备UE与SFN layer建立连接的过程中，或终端设备UE已经接入SFN layer后，网络侧设备可以向终端设备UE发送切换命令或者重配指示消息，用于指示终端设备UE转移连接到cell/TRP layer的目标小区cell/TRP。
可以理解的是，切换命令或者重配指示消息中包括用于给终端设备UE提供与目标小区建立连接的接入相关信息，比如目标小区的系统信息SI或目标小区的参考信号相关的随机接入RACH资源等。终端设备UE则可以基于该接入相关信息连接到目标小区cell/TRP。
在一种实现方式中，切换命令或重配指示消息可以是同步重配(reconfiguration with sync或handover command或者mobility control information)，即网络侧设备发送的指示消息给终端设备UE，指示终端设备UE进行切换操作或者变换小区。
可选地，基于上述任一实施例，驻留到所述SFN的终端设备UE与所述SFN建立连接的过程中，所述发送接入相关信息包括：
向终端设备UE发送随机接入相关消息，所述随机接入相关消息中携带所述接入相关信息；
所述随机接入相关消息包括：无竞争随机接入过程中的Message2，或竞争随机接入过程中的Message2或Message4，或两步随机接入RACH过程中的MessageB。
具体地，驻留到SFN layer的终端设备UE与SFN layer建立连接的过程中，网络侧设备可以在向终端设备UE发送随机接入相关信息时携带接入相关信息，用于指示终端设备UE在与SFN layer建立连接的过程中转移连接到cell/TRP layer的目标小区cell/TRP。
具体地，终端设备UE在接入SFN layer时，可以通过SFN specific RACH资源发起RACH。网络侧设备在接收到了终端设备UE的随机接入请求后，可以向终端设备UE返回随机接入相关信息，其中，随机接入相关信息中携带有切换命令或者重配指示消息，其中，切换命令或者重配指示消息包括接入相关信息，用于指示终端设备UE转移连接到cell/TRP layer的目标小区cell/TRP。终端设备UE接收到切换命令或者重配指示消息后则转移连接到cell/TRP layer的目标小区cell/TRP完成连接建立。
在本申请实施例中，在驻留在单频网小区组的终端设备UE在需要与目标小区建立连接时，网络侧设备利用与SFN layer建立连接的过程中的随机接入相关消息，携带终端设备UE用于与目标小区建立连接的接入相关信息，在避免终端设备UE频繁进行小区测量的基础上进一步节省终端设备UE功耗，并节省网络开销。
可选地，基于上述任一实施例，终端设备UE与所述SFN建立连接后，所述接入相关信息包括目标数据链路信息；
所述目标数据链路信息用于指示所述终端设备UE的全部或部分业务数据通过目标小区收发。
具体地，驻留到SFN layer的终端设备UE已经成功接入SFN layer后，若有与目标小区进行数据传输的需求，网络侧设备可以指示终端设备UE将全部或部分业务数据通过目标小区收发。
具体地，当驻留在SFN layer的终端设备UE已经成功接入SFN layer后，网络侧设备可以向终端设备UE发送接入相关信息，具体可以是目标数据链路信息；终端设备UE在接收到接入相关信息后，可以基于目标数据链路信息将全部或部分业务数据通过目标小区收发。
可选地，基于上述任一实施例，终端设备UE驻留在所述SFN的情况下，所述方法还包括以下至少一项：
向驻留在所述SFN的终端设备UE发送寻呼消息，所述寻呼消息是SFN特有的寻呼消息或者cell/TRP特有的寻呼消息；
向驻留在所述SFN的终端设备UE发送系统消息，所述系统消息是SFN特有的系统消息或者cell/TRP特有的系统消息。
具体地，在终端设备UE驻留在SFN layer时，可以执行如下操作至少之一：
操作一：向驻留在所述SFN的终端设备UE发送寻呼消息。其中的寻呼消息可以是SFN特有的寻呼消息SFN specific paging，或者cell/TRP特有的寻呼消息cell/TRP specific paging。
操作二：向驻留在所述SFN的终端设备UE发送系统消息。其中的系统消息可以是SFN特有的系统消息SFN specific SISI，或者cell/TRP特有的系统消息cell/TRP specific SI。
可选地，基于上述任一实施例，当网络部署有高频范围和低频范围的情况下，所述SFN特有的小区包括低频范围内的小区；所述SFN内的小区或TRP包括所述高频范围内的小区；
或者，
网络中包括卫星通信网络的情况下，所述SFN特有的小区包括高空平台站HAPS小区或高轨卫星小区，所述SFN内的小区或TRP包括低轨卫星小区或地面基站覆盖的小区。
具体地，当网络部署有高频范围high-frequency和低频范围low frequency layers时，可以将低频范围low frequency layer对应的小区cell/TRP当作SFN或者超级小区super cell，高频high frequency layer对应的小区cell/TRP当作SFN/super cell内的cell/TRP。
同样地，对于卫星通信satellite or HAPS(High Altitude Platform Station)，可以将高轨卫星小区HAPS/satellite cell当作SFN或者super cell，在此范围内的低轨卫星对应的小区cell/TRP，或者此范围内的其它普通cell/TRP，当作SFN/super cell内的cell/TRP。
在本申请实施例中，在驻留或连接到单频网小区组SFN的终端设备UE需要与目标小区建立连接时，网络侧设备直接向终端设备UE发送用于与目标小区建立连接的接入相关信息；相比现有技术中终端设备UE驻留在Cell/TRP发起随机接入或建立连 接，避免了终端设备UE频繁进行小区测量和小区变换，有效节省终端设备UE功耗并节省网络开销。
需要说明的是，本申请实施例提供的连接建立方法，执行主体可以为连接建立装置，或者该连接建立装置中的用于执行加载连接建立的方法的控制模块。本申请实施例中以连接建立装置执行加载连接建立的方法为例，说明本申请实施例提供的连接建立的方法。
图6是本申请实施例提供的又一种连接建立方法流程示意图，如图6所示，该方法包括如下步骤：
步骤600，终端设备UE接入到SFN layer；
具体地，终端设备UE从驻留在单频小区组SFN layer的状态变为成功接入单频小区组SFN layer，即与SFN layer或SFN layer内的小区建立连接。
步骤610，终端设备UE接收网络侧设备发送的切换命令或者重配指示消息；
具体地，网络侧设备可以在终端设备UE接入到SFN layer后，向终端设备UE发送切换命令或者重配指示消息；
终端接收到重配指示消息后，可以基于切换命令或者重配指示消息获取与目标小区建立连接的接入相关信息，比如目标小区的系统信息SI或目标小区的参考信号相关的随机接入RACH资源；
步骤620，终端设备UE与目标小区建立连接；
具体地，终端设备UE获取与目标小区建立连接的接入相关信息后，可以基于该接入相关信息在所述目标小区发起RRC连接建立或RACH过程，与目标小区建立连接。
图7是本申请实施例提供的再一种连接建立方法流程示意图，如图7所示，该方法包括如下步骤：
步骤700，终端设备UE接入SFN layer；
具体地，终端设备UE从驻留在SFN layer的状态，变为接入SFN layer的状态，即与SFN layer建立连接的过程中。
步骤710，终端设备UE接收网络侧设备发送的接入相关信息；
具体地，网络侧设备可以在终端设备UE接入到SFN layer的过程中，即在SFN layer发起RACH的过程中，向终端设备UE发送随机接入相关信息，并在随机接入相关信息中携带切换命令或者重配指示消息；
终端设备UE接收到随机接入相关信息并获取其中携带的切换命令或者重配指示消息后，可以基于切换命令或者重配指示消息获取与目标小区建立连接的接入相关信息，比如目标小区的系统信息SI或目标小区的参考信号相关的随机接入RACH资源；
具体地，若终端设备UE在SFN layer随机接入过程为无竞争随机接入过程，则随机接入相关信息为Message2；若终端设备UE在SFN layer随机接入过程为竞争随机接入过程，则随机接入相关信息为Message4；若终端设备UE在SFN layer随机接入过程为两步竞争随机接入过程RACH，则随机接入相关信息为MessageB；
步骤720，终端设备UE与目标小区建立连接；
具体地，终端设备UE获取与目标小区建立连接的接入相关信息后，可以基于该 接入相关信息在所述目标小区发起RRC连接建立或RACH过程，与目标小区建立连接。
图8是本申请实施例提供的还一种连接建立方法流程示意图，如图8所示，该方法包括如下步骤：
步骤800，终端设备UE准备接入SFN layer；
具体地，终端设备UE从驻留在SFN layer的状态变为准备接入SFN layer，即终端设备UE处于即将与单频小区组内的小区建立连接的状态。
步骤810，终端设备UE获取SFN特有的系统信息SI；
具体地，网络侧设备可以在终端设备UE即将接入SFN layer但还未接入时，即当(when)驻留到所述SFN的终端设备UE与所述目标小区建立连接时，为终端设备UE提供用于指示接入相关信息的SFN特有的系统信息SI或目标小区的系统信息SI或目标小区的参考信号；本实施例中，可以以SFN特有的系统信息SI为例进行说明。
步骤820，终端设备UE获取与目标小区建立连接的接入相关信息；
终端设备UE获取到SFN特有的系统信息SI后，可以基于SFN特有的系统信息SI获取接入相关信息；
其中，接入相关信息为以下至少一项：
目标小区的物理层小区标识PCI；
目标小区的同步栅格Sync raster；
目标小区的参考信号；
目标小区的参考信号相关的随机接入RACH资源。
步骤830，终端设备UE与目标小区建立连接；
具体地，终端设备UE获取与目标小区建立连接的接入相关信息后，可以基于该接入相关信息在所述目标小区发起RRC连接建立或RACH过程，与目标小区建立连接。
图9是本申请实施例提供的还一种连接建立方法流程示意图，如图9所示，该方法包括如下步骤：
步骤900，终端设备UE接入到SFN layer；
具体地，终端设备UE从驻留在单频小区组SFN layer的状态变为成功接入SFN layer，即与SFN layer或SFN layer内的小区建立连接。
步骤910，终端设备UE接收网络侧设备发送的接入相关信息；
具体地，网络侧设备可以在终端设备UE接入到SFN layer后，向终端设备UE发送接入相关信息；本实施例中，接入相关信息可以是目标数据链路信息；
终端设备UE接收到接入相关信息后，可以基于接入相关信息获取向目标小区进行数据传输的目标数据链路信息；
步骤920，终端设备UE将全部或部分业务数据通过目标小区收发；
具体地，终端设备UE获取目标数据链路信息后，可以将全部或部分业务数据通过目标小区收发。
需要说明的是，本申请实施例提供的连接建立方法，执行主体可以为连接建立装置，或者，该连接建立装置中的用于执行连接建立方法的控制模块。本申请实施例中 以连接建立装置执行连接建立方法为例，说明本申请实施例提供的连接建立装置。
图10是本申请实施例提供的一种连接建立装置结构示意图，如图10所示，该装置包括：第一接收模块1010和连接模块1020；其中：
第一接收模块1010，用于驻留或连接到单频网小区组SFN的终端设备UE接收网络侧设备发送的接入相关信息；
连接模块1020，用于基于所述接入相关信息与目标小区建立连接；
其中，所述目标小区为Cell/TRP特有的小区或收发点。
具体地，连接建立装置在终端设备UE驻留或连接到单频网小区组SFN时，通过第一接收模块1010获取网络侧设备发送的接入相关信息，并通过连接模块1020基于接入相关信息与目标小区建立连接。
在本申请实施例中，驻留或连接到单频网小区组SFN的终端设备UE在需要与目标小区建立连接时，直接从网络侧设备获取用于与目标小区建立连接的接入相关信息后与目标小区建立连接；相比现有技术中终端设备UE驻留在Cell/TRP发起随机接入或建立连接，避免了终端设备UE频繁进行小区测量和小区变换，有效节省终端设备UE功耗并节省网络开销。
可选地，基于上述任一实施例，驻留到所述SFN的终端设备UE与所述目标小区建立连接前或者建立连接时，所述接入相关信息包括以下至少一项：
目标小区的物理层小区标识PCI；
目标小区的同步栅格Sync raster；
目标小区的参考信号；
目标小区的参考信号相关的随机接入RACH资源。
可选地，基于上述任一实施例，所述接入相关信息通过以下至少一项指示：
所述SFN特有的系统信息SI指示；
目标小区的系统信息SI指示；
目标小区的参考信号指示。
可选地，基于上述任一实施例，所述装置还包括：
第二接收模块，用于驻留到所述SFN的终端设备UE与目标小区建立连接时或者建立连接前，接收以下至少一项：
目标小区的参考信号；
目标小区对应的系统信息SI。
可选地，基于上述任一实施例，驻留到所述SFN的终端设备UE与所述SFN建立连接的过程中，或终端设备UE与所述SFN建立连接后，所述接收模块还用于：
接收网络侧设备发送的切换命令或者重配指示消息，基于所述切换命令或者重配指示消息获取所述接入相关信息。
可选地，基于上述任一实施例，驻留到所述SFN的终端设备UE与所述SFN建立连接的过程中，所述接收模块还用于：
接收网络侧设备发送的随机接入相关消息，所述随机接入相关消息中携带所述接入相关信息；
所述随机接入相关消息包括：无竞争随机接入过程中的Message2，或竞争随机接 入过程中的Message2或Message4，或两步随机接入RACH过程中的MessageB。
可选地，基于上述任一实施例，与所述SFN建立连接，是基于所述SFN特有的参考信号关联的随机接入RACH资源建立。
可选地，基于上述任一实施例，所述装置还包括：
获取模块，用于终端设备UE在与所述SFN建立连接前，从所述SFN特有的系统信息SI，或cell/TRP特有的系统信息SI中获取所述随机接入RACH资源。
可选地，基于上述任一实施例，所述与目标小区建立连接包括：在所述目标小区发起RRC连接建立或RACH过程。
可选地，基于上述任一实施例，终端设备UE与所述SFN建立连接后，所述接入相关信息包括目标数据链路信息；
所述连接模块还用于：基于所述目标数据链路信息，将所述终端设备UE的全部或部分业务数据通过目标小区收发。
可选地，基于上述任一实施例，终端设备UE驻留在所述SFN的情况下，所述装置还包括：
切换模块，用于终端设备UE在SFN范围内不同cell/TRP之间变换时，不进行小区选择重选或不进行小区切换。
可选地，基于上述任一实施例，所述装置还包括：
驻留模块，用于所述终端设备UE在非激活态或空闲态的情况下，驻留在所述SFN，终端设备UE基于以下至少一项区分cell/TRP特有的小区与所述SFN特有的小区：
小区标识PCI；
同步栅格sync Raster。
可选地，基于上述任一实施例，终端设备UE驻留在所述SFN的情况下，所述装置还包括以下至少一项：
第三接收模块，用于在所述SFN接收寻呼消息；所述寻呼消息是SFN特有的寻呼消息或者cell/TRP特有的寻呼消息；
第四接收模块，用于在所述SFN接收系统消息；所述系统消息是SFN特有的系统消息或者cell/TRP特有的系统消息。
可选地，基于上述任一实施例，当网络部署有高频范围和低频范围的情况下，所述SFN特有的小区包括低频范围内的小区；所述SFN内的小区或TRP包括所述高频范围内的小区；
或者，
网络中包括卫星通信网络的情况下，所述SFN特有的小区包括高空平台站HAPS小区或高轨卫星小区，所述SFN内的小区或TRP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，驻留或连接到单频网小区组SFN的终端设备UE在需要与目标小区建立连接时，直接从网络侧设备获取用于与目标小区建立连接的接入相关信息后与目标小区建立连接；相比现有技术中终端设备UE驻留在Cell/TRP发起随机接入或建立连接，避免了终端设备UE频繁进行小区测量和小区变换，有效节省终端设备UE功耗并节省网络开销。
图11是本申请实施例提供的另一种连接建立装置结构示意图，如图11所示，该装置包括：第一发送模块1110；其中：
第一发送模块1110，用于向驻留或连接到单频网小区组SFN的终端设备UE发送接入相关信息；
所述接入相关信息用于指示所述终端设备UE与目标小区建立连接；
其中，所述目标小区为Cell/TRP特有的小区或收发点。
具体地，连接建立装置在终端设备UE驻留或连接到单频网小区组SFN时，通过第一发送模块1110向终端设备UE发送接入相关信息，以使终端设备UE基于接入相关信息与目标小区建立连接。
在本申请实施例中，在驻留或连接到单频网小区组SFN的终端设备UE需要与目标小区建立连接时，网络侧设备直接向终端设备UE发送用于与目标小区建立连接的接入相关信息；相比现有技术中终端设备UE驻留在Cell/TRP发起随机接入或建立连接，避免了终端设备UE频繁进行小区测量和小区变换，有效节省终端设备UE功耗并节省网络开销。
可选地，基于上述任一实施例，驻留到所述SFN的终端设备UE与所述目标小区建立连接前或者建立连接时，所述接入相关信息包括以下至少一项：
目标小区的物理层小区标识PCI；
目标小区的同步栅格Sync raster；
目标小区的参考信号；
目标小区的参考信号相关的随机接入RACH资源。
可选地，基于上述任一实施例，所述接入相关信息通过以下至少一项指示：
所述SFN特有的系统信息SI指示；
目标小区的系统信息SI指示；
目标小区的参考信号指示。
可选地，基于上述任一实施例，所述装置还包括：
第二发送模块，用于驻留到所述SFN的终端设备UE与目标小区建立连接时或者建立连接前，向终端设备UE发送以下至少一项：
目标小区的参考信号；
目标小区对应的系统信息SI。
可选地，基于上述任一实施例，驻留到所述SFN的终端设备UE与所述SFN建立连接的过程中，或终端设备UE与所述SFN建立连接后，所述第一发送模块还用于：
向终端设备UE发送切换命令或者重配指示消息，所述切换命令或者重配指示消息用于终端设备UE获取所述接入相关信息。
可选地，基于上述任一实施例，驻留到所述SFN的终端设备UE与所述SFN建立连接的过程中，所述第一发送模块还用于：
向终端设备UE发送随机接入相关消息，所述随机接入相关消息中携带所述接入相关信息；
所述随机接入相关消息包括：无竞争随机接入过程中的Message2，或竞争随机接入过程中的Message2或Message4，或两步随机接入RACH过程中的MessageB。
可选地，基于上述任一实施例，终端设备UE与所述SFN建立连接后，所述接入相关信息包括目标数据链路信息；
所述目标数据链路信息用于指示所述终端设备UE的全部或部分业务数据通过目标小区收发。
可选地，基于上述任一实施例，终端设备UE驻留在所述SFN的情况下，所述装置还包括以下至少一项：
第三发送模块，用于向驻留在所述SFN的终端设备UE发送寻呼消息，所述寻呼消息是SFN特有的寻呼消息或者cell/TRP特有的寻呼消息；
第四发送模块，用于向驻留在所述SFN的终端设备UE发送系统消息，所述系统消息是SFN特有的系统消息或者cell/TRP特有的系统消息。
可选地，基于上述任一实施例，当网络部署有高频范围和低频范围的情况下，所述SFN特有的小区包括低频范围内的小区；所述SFN内的小区或TRP包括所述高频范围内的小区；
或者，
网络中包括卫星通信网络的情况下，所述SFN特有的小区包括高空平台站HAPS小区或高轨卫星小区，所述SFN内的小区或TRP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，在驻留或连接到单频网小区组SFN的终端设备UE需要与目标小区建立连接时，网络侧设备直接向终端设备UE发送用于与目标小区建立连接的接入相关信息；相比现有技术中终端设备UE驻留在Cell/TRP发起随机接入或建立连接，避免了终端设备UE频繁进行小区测量和小区变换，有效节省终端设备UE功耗并节省网络开销。
本申请实施例中的连接建立装置可以是装置，也可以是终端设备UE中的部件、集成电路、或芯片。该装置可以是移动电子设备，也可以为非移动电子设备。示例性的，移动电子设备可以为手机、平板电脑、笔记本电脑、掌上电脑、车载电子设备、可穿戴设备、超级移动个人计算机(ultra-mobile personal computer，UMPC)、上网本或者个人数字助理(personal digital assistant，PDA)等，非移动电子设备可以为服务器、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。
本申请实施例中的连接建立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。
本申请实施例提供的连接建立装置能够实现图3至图9的方法实施例中连接建立装置实现的各个过程，为避免重复，这里不再赘述。
图12是实现本申请实施例的一种终端设备UE的硬件结构示意图。
该终端设备UE1200包括但不限于：射频单元1201、网络模块1202、音频输出单元1203、输入单元1204、传感器1205、显示单元1206、用户输入单元1207、接口单元1208、存储器1209、以及处理器1210等部件。
本领域技术人员可以理解，终端设备UE1200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1210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12中示出的终端设备UE结构并不构成对终端设备UE的限定，终端设备UE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1204可以包括图形处理器(Graphics Processing Unit，GPU)12041和麦克风12042，图形处理器12041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1206可包括显示面板12061，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12061。用户输入单元1207包括触控面板12071以及其他输入设备12072。触控面板12071，也称为触摸屏。触控面板12071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12072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1201将来自网络侧设备的信息接收后，给处理器1210处理。通常，射频单元1201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1209可用于存储软件程序或指令以及各种数据。存储器1209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1209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1210可包括一个或多个处理单元；可选的，处理器1210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1210中。
其中，处理器1210，用于基于所述接入相关信息与目标小区建立连接；其中，所述目标小区为Cell/TRP特有的小区或收发点。
处理器1210，还用于驻留到所述SFN的终端设备UE与目标小区建立连接时或者建立连接前，接收以下至少一项：
目标小区的参考信号；
目标小区对应的系统信息SI。
可选地，处理器1210，还用于驻留到所述SFN的终端设备UE与所述SFN建立连接的过程中，或终端设备UE与所述SFN建立连接后，接收网络侧设备发送的切换命令或者重配指示消息，基于所述切换命令或者重配指示消息获取所述接入相关信息。
可选地，处理器1210，还用于驻留到所述SFN的终端设备UE与所述SFN建立连接的过程中，接收网络侧设备发送的随机接入相关消息，所述随机接入相关消息中携带所述接入相关信息；
所述随机接入相关消息包括：无竞争随机接入过程中的Message2，或竞争随机接入过程中的Message2或Message4，或两步随机接入RACH过程中的MessageB。
可选地，处理器1210，还用于终端设备UE在与所述SFN建立连接前，从所述SFN特有的系统信息SI，或cell/TRP特有的系统信息SI中获取所述随机接入RACH资源。
可选地，处理器1210，还用于在所述目标小区发起RRC连接建立或RACH过程。
可选地，处理器1210，还用于终端设备UE与所述SFN建立连接后，基于所述目标数据链路信息，将所述终端设备UE的全部或部分业务数据通过目标小区收发，其中，所述接入相关信息包括目标数据链路信息。
可选地，处理器1210，还用于终端设备UE驻留在所述SFN的情况下，终端设备UE在SFN范围内不同cell/TRP之间变换时，不进行小区选择重选或不进行小区切换。
可选地，处理器1210，还用于所述终端设备UE在非激活态或空闲态的情况下，驻留在所述SFN，终端设备UE基于以下至少一项区分cell/TRP特有的小区与所述SFN特有的小区：
小区标识PCI；
同步栅格sync Raster。
可选地，处理器1210，还用于执行以下至少一项：
在所述SFN接收寻呼消息；所述寻呼消息是SFN特有的寻呼消息或者cell/TRP特有的寻呼消息；
在所述SFN接收系统消息；所述系统消息是SFN特有的系统消息或者cell/TRP特有的系统消息。
在本申请实施例中，驻留或连接到单频网小区组SFN的终端设备UE在需要与目标小区建立连接时，直接从网络侧设备获取用于与目标小区建立连接的接入相关信息后与目标小区建立连接；相比现有技术中终端设备UE驻留在Cell/TRP发起随机接入或建立连接，避免了终端设备UE频繁进行小区测量和小区变换，有效节省终端设备UE功耗并节省网络开销。
图13是实现本申请实施例的一种网络侧设备的硬件结构示意图。
如图13所示，该网络侧设备1300包括：天线1301、射频装置1302、基带装置1303。天线1301与射频装置1302连接。在上行方向上，射频装置1302通过天线1301接收信息，将接收的信息发送给基带装置1303进行处理。在下行方向上，基带装置1303对要发送的信息进行处理，并发送给射频装置1302，射频装置1302对收到的信息进行处理后经过天线1301发送出去。
上述频带处理装置可以位于基带装置1303中，以上实施例中网络侧设备执行的方法可以在基带装置1303中实现，该基带装置1303包括处理器1304和存储器1305。
基带装置1303例如可以包括至少一个基带板，该基带板上设置有多个芯片，如图13所示，其中一个芯片例如为处理器1304，与存储器1305连接，以调用存储器1305中的程序，执行以上方法实施例中所示的网络设备操作。
该基带装置1303还可以包括网络接口1306，用于与射频装置1302交互信息，该接口例如为通用公共无线接口(common public radio interface，简称CPRI)。
具体地，本发明实施例的网络侧设备还包括：存储在存储器1305上并可在处理器1304上运行的指令或程序，处理器1304调用存储器1305中的指令或程序执行图11所示各模块执行的方法，并达到相同的技术效果，为避免重复，故不再此赘述。
在本申请实施例中，在驻留或连接到单频网小区组SFN的终端设备UE需要与目标小区建立连接时，网络侧设备直接向终端设备UE发送用于与目标小区建立连接的接入相关信息；相比现有技术中终端设备UE驻留在Cell/TRP发起随机接入或建立连接，避免了终端设备UE频繁进行小区测量和小区变换，有效节省终端设备UE功耗并节省网络开销。
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连接建立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设备UE或网络侧设备中的处理器。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程序或指令，实现上述连接建立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。
本申请实施例提供了一种程序产品，所述程序产品存储在非易失性的可读存储介质，所述程序产品被处理器执行时实现上述连接建立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。
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设备UE(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 (53)

  1. 一种连接建立方法，包括：
    驻留或连接到单频网小区组SFN的终端设备UE接收网络侧设备发送的接入相关信息；
    基于所述接入相关信息与目标小区建立连接；
    其中，所述目标小区为小区或收发点Cell/TRP特有的小区或收发点。
  2. 根据权利要求1所述的连接建立方法，其中，驻留到所述SFN的终端设备UE与所述目标小区建立连接前或者建立连接时，所述接入相关信息包括以下至少一项：
    目标小区的物理层小区标识PCI；
    目标小区的同步栅格Sync raster；
    目标小区的参考信号；
    目标小区的参考信号相关的随机接入RACH资源。
  3. 根据权利要求2所述的连接建立方法，其中，所述接入相关信息通过以下至少一项指示：
    所述SFN特有的系统信息SI指示；
    目标小区的系统信息SI指示；
    目标小区的参考信号指示。
  4. 根据权利要求1所述的连接建立方法，其中，所述方法还包括：
    驻留到所述SFN的终端设备UE与目标小区建立连接时或者建立连接前，接收以下至少一项：
    目标小区的参考信号；
    目标小区对应的系统信息SI。
  5. 根据权利要求1所述的连接建立方法，其中，驻留到所述SFN的终端设备UE与所述SFN建立连接的过程中，或终端设备UE与所述SFN建立连接后，所述接收网络侧设备发送的接入相关信息包括：
    接收网络侧设备发送的切换命令或者重配指示消息，基于所述切换命令或者重配指示消息获取所述接入相关信息。
  6. 根据权利要求1所述的连接建立方法，其中，驻留到所述SFN的终端设备UE与所述SFN建立连接的过程中，所述接收网络侧设备发送的接入相关信息包括：
    接收网络侧设备发送的随机接入相关消息，所述随机接入相关消息中携带所述接入相关信息；
    所述随机接入相关消息包括：无竞争随机接入过程中的Message2，或竞争随机接入过程中的Message2或Message4，或两步随机接入RACH过程中的MessageB。
  7. 根据权利要求5或6所述的连接建立方法，其中，与所述SFN建立连接，是基于所述SFN特有的参考信号关联的随机接入RACH资源建立。
  8. 根据权利要求7所述的连接建立方法，其中，所述方法还包括：终端设备UE在与所述SFN建立连接前，从所述SFN特有的系统信息SI，或cell/TRP特有的系统信息SI中获取所述随机接入RACH资源。
  9. 根据权利要求1至6任一所述的连接建立方法，其中，所述与目标小区建立连接包括：在所述目标小区发起RRC连接建立或RACH过程。
  10. 根据权利要求1所述的连接建立方法，其中，终端设备UE与所述SFN建立连接后，所述接入相关信息包括目标数据链路信息；
    基于所述接入相关信息与目标小区建立连接包括：基于所述目标数据链路信息，将所述终端设备UE的全部或部分业务数据通过目标小区收发。
  11. 根据权利要求1至6任一所述的连接建立方法，其中，终端设备UE驻留在所述SFN的情况下，所述方法还包括：
    终端设备UE在SFN范围内不同cell/TRP之间变换时，不进行小区选择重选或不进行小区切换。
  12. 根据权利要求1所述的连接建立方法，其中，所述方法还包括：
    所述终端设备UE在非激活态或空闲态的情况下，驻留在所述SFN，终端设备UE基于以下至少一项区分cell/TRP特有的小区与所述SFN特有的小区：
    小区标识PCI；
    同步栅格sync Raster。
  13. 根据权利要求1所述的连接建立方法，其中，终端设备UE驻留在所述SFN的情况下，所述方法还包括以下至少一项：
    在所述SFN接收寻呼消息；所述寻呼消息是SFN特有的寻呼消息或者cell/TRP特有的寻呼消息；
    在所述SFN接收系统消息；所述系统消息是SFN特有的系统消息或者cell/TRP特有的系统消息。
  14. 根据权利要求1所述的连接建立方法，其中，当网络部署有高频范围和低频范围的情况下，所述SFN特有的小区包括低频范围内的小区；所述SFN内的小区或TRP包括所述高频范围内的小区；
    或者，
    网络中包括卫星通信网络的情况下，所述SFN特有的小区包括高空平台站HAPS小区或高轨卫星小区，所述SFN内的小区或TRP包括低轨卫星小区或地面基站覆盖的小区。
  15. 一种连接建立方法，包括：
    向驻留或连接到单频网小区组SFN的终端设备UE发送接入相关信息；
    所述接入相关信息用于指示所述终端设备UE与目标小区建立连接；
    其中，所述目标小区为Cell/TRP特有的小区或收发点。
  16. 根据权利要求15所述的连接建立方法，其中，驻留到所述SFN的终端设备UE与所述目标小区建立连接前或者建立连接时，所述接入相关信息包括以下至少一项：
    目标小区的物理层小区标识PCI；
    目标小区的同步栅格Sync raster；
    目标小区的参考信号；
    目标小区的参考信号相关的随机接入RACH资源。
  17. 根据权利要求16所述的连接建立方法，其中，所述接入相关信息通过以下至 少一项指示：
    所述SFN特有的系统信息SI指示；
    目标小区的系统信息SI指示；
    目标小区的参考信号指示。
  18. 根据权利要求15所述的连接建立方法，其中，所述方法还包括：
    驻留到所述SFN的终端设备UE与目标小区建立连接时或者建立连接前，向终端设备UE发送以下至少一项：
    目标小区的参考信号；
    目标小区对应的系统信息SI。
  19. 根据权利要求15所述的连接建立方法，其中，驻留到所述SFN的终端设备UE与所述SFN建立连接的过程中，或终端设备UE与所述SFN建立连接后，所述发送接入相关信息包括：
    向终端设备UE发送切换命令或者重配指示消息，所述切换命令或者重配指示消息用于终端设备UE获取所述接入相关信息。
  20. 根据权利要求15所述的连接建立方法，其中，驻留到所述SFN的终端设备UE与所述SFN建立连接的过程中，所述发送接入相关信息包括：
    向终端设备UE发送随机接入相关消息，所述随机接入相关消息中携带所述接入相关信息；
    所述随机接入相关消息包括：无竞争随机接入过程中的Message2，或竞争随机接入过程中的Message2或Message4，或两步随机接入RACH过程中的MessageB。
  21. 根据权利要求15所述的连接建立方法，其中，终端设备UE与所述SFN建立连接后，所述接入相关信息包括目标数据链路信息；
    所述目标数据链路信息用于指示所述终端设备UE的全部或部分业务数据通过目标小区收发。
  22. 根据权利要求15所述的连接建立方法，其中，终端设备UE驻留在所述SFN的情况下，所述方法还包括以下至少一项：
    向驻留在所述SFN的终端设备UE发送寻呼消息，所述寻呼消息是SFN特有的寻呼消息或者cell/TRP特有的寻呼消息；
    向驻留在所述SFN的终端设备UE发送系统消息，所述系统消息是SFN特有的系统消息或者cell/TRP特有的系统消息。
  23. 根据权利要求15所述的连接建立方法，其中，当网络部署有高频范围和低频范围的情况下，所述SFN特有的小区包括低频范围内的小区；所述SFN内的小区或TRP包括所述高频范围内的小区；
    或者，
    网络中包括卫星通信网络的情况下，所述SFN特有的小区包括高空平台站HAPS小区或高轨卫星小区，所述SFN内的小区或TRP包括低轨卫星小区或地面基站覆盖的小区。
  24. 一种连接建立装置，包括：
    第一接收模块，用于驻留或连接到单频网小区组SFN的终端设备UE接收网络侧 设备发送的接入相关信息；
    连接模块，用于基于所述接入相关信息与目标小区建立连接；
    其中，所述目标小区为Cell/TRP特有的小区或收发点。
  25. 根据权利要求24所述的连接建立装置，其中，驻留到所述SFN的终端设备UE与所述目标小区建立连接前或者建立连接时，所述接入相关信息包括以下至少一项：
    目标小区的物理层小区标识PCI；
    目标小区的同步栅格Sync raster；
    目标小区的参考信号；
    目标小区的参考信号相关的随机接入RACH资源。
  26. 根据权利要求25所述的连接建立装置，其中，所述接入相关信息通过以下至少一项指示：
    所述SFN特有的系统信息SI指示；
    目标小区的系统信息SI指示；
    目标小区的参考信号指示。
  27. 根据权利要求24所述的连接建立装置，其中，所述装置还包括：
    第二接收模块，用于驻留到所述SFN的终端设备UE与目标小区建立连接时或者建立连接前，接收以下至少一项：
    目标小区的参考信号；
    目标小区对应的系统信息SI。
  28. 根据权利要求24所述的连接建立装置，其中，驻留到所述SFN的终端设备UE与所述SFN建立连接的过程中，或终端设备UE与所述SFN建立连接后，所述接收模块还用于：
    接收网络侧设备发送的切换命令或者重配指示消息，基于所述切换命令或者重配指示消息获取所述接入相关信息。
  29. 根据权利要求24所述的连接建立装置，其中，驻留到所述SFN的终端设备UE与所述SFN建立连接的过程中，所述接收模块还用于：
    接收网络侧设备发送的随机接入相关消息，所述随机接入相关消息中携带所述接入相关信息；
    所述随机接入相关消息包括：无竞争随机接入过程中的Message2，或竞争随机接入过程中的Message2或Message4，或两步随机接入RACH过程中的MessageB。
  30. 根据权利要求28或29所述的连接建立装置，其中，与所述SFN建立连接，是基于所述SFN特有的参考信号关联的随机接入RACH资源建立。
  31. 根据权利要求30所述的连接建立装置，其中，所述装置还包括：
    获取模块，用于终端设备UE在与所述SFN建立连接前，从所述SFN特有的系统信息SI，或cell/TRP特有的系统信息SI中获取所述随机接入RACH资源。
  32. 根据权利要求24至29任一所述的连接建立装置，其中，所述与目标小区建立连接包括：在所述目标小区发起RRC连接建立或RACH过程。
  33. 根据权利要求24所述的连接建立装置，其中，终端设备UE与所述SFN建立连接后，所述接入相关信息包括目标数据链路信息；
    所述连接模块还用于：基于所述目标数据链路信息，将所述终端设备UE的全部或部分业务数据通过目标小区收发。
  34. 根据权利要求24至29任一所述的连接建立装置，其中，终端设备UE驻留在所述SFN的情况下，所述装置还包括：
    切换模块，用于终端设备UE在SFN范围内不同cell/TRP之间变换时，不进行小区选择重选或不进行小区切换。
  35. 根据权利要求24所述的连接建立装置，其中，所述装置还包括：
    驻留模块，用于所述终端设备UE在非激活态或空闲态的情况下，驻留在所述SFN，终端设备UE基于以下至少一项区分cell/TRP特有的小区与所述SFN特有的小区：
    小区标识PCI；
    同步栅格sync Raster。
  36. 根据权利要求24所述的连接建立装置，其中，终端设备UE驻留在所述SFN的情况下，所述装置还包括以下至少一项：
    第三接收模块，用于在所述SFN接收寻呼消息；所述寻呼消息是SFN特有的寻呼消息或者cell/TRP特有的寻呼消息；
    第四接收模块，用于在所述SFN接收系统消息；所述系统消息是SFN特有的系统消息或者cell/TRP特有的系统消息。
  37. 根据权利要求24所述的连接建立装置，其中，当网络部署有高频范围和低频范围的情况下，所述SFN特有的小区包括低频范围内的小区；所述SFN内的小区或TRP包括所述高频范围内的小区；
    或者，
    网络中包括卫星通信网络的情况下，所述SFN特有的小区包括高空平台站HAPS小区或高轨卫星小区，所述SFN内的小区或TRP包括低轨卫星小区或地面基站覆盖的小区。
  38. 一种连接建立装置，包括：
    第一发送模块，用于向驻留或连接到单频网小区组SFN的终端设备UE发送接入相关信息；
    所述接入相关信息用于指示所述终端设备UE与目标小区建立连接；
    其中，所述目标小区为Cell/TRP特有的小区或收发点。
  39. 根据权利要求38所述的连接建立装置，其中，驻留到所述SFN的终端设备UE与所述目标小区建立连接前或者建立连接时，所述接入相关信息包括以下至少一项：
    目标小区的物理层小区标识PCI；
    目标小区的同步栅格Sync raster；
    目标小区的参考信号；
    目标小区的参考信号相关的随机接入RACH资源。
  40. 根据权利要求39所述的连接建立装置，其中，所述接入相关信息通过以下至少一项指示：
    所述SFN特有的系统信息SI指示；
    目标小区的系统信息SI指示；
    目标小区的参考信号指示。
  41. 根据权利要求38所述的连接建立装置，其中，所述装置还包括：
    第二发送模块，用于驻留到所述SFN的终端设备UE与目标小区建立连接时或者建立连接前，向终端设备UE发送以下至少一项：
    目标小区的参考信号；
    目标小区对应的系统信息SI。
  42. 根据权利要求38所述的连接建立装置，其中，驻留到所述SFN的终端设备UE与所述SFN建立连接的过程中，或终端设备UE与所述SFN建立连接后，所述第一发送模块还用于：
    向终端设备UE发送切换命令或者重配指示消息，所述切换命令或者重配指示消息用于终端设备UE获取所述接入相关信息。
  43. 根据权利要求38所述的连接建立装置，其中，驻留到所述SFN的终端设备UE与所述SFN建立连接的过程中，所述第一发送模块还用于：
    向终端设备UE发送随机接入相关消息，所述随机接入相关消息中携带所述接入相关信息；
    所述随机接入相关消息包括：无竞争随机接入过程中的Message2，或竞争随机接入过程中的Message2或Message4，或两步随机接入RACH过程中的MessageB。
  44. 根据权利要求38所述的连接建立装置，其中，终端设备UE与所述SFN建立连接后，所述接入相关信息包括目标数据链路信息；
    所述目标数据链路信息用于指示所述终端设备UE的全部或部分业务数据通过目标小区收发。
  45. 根据权利要求38所述的连接建立装置，其中，终端设备UE驻留在所述SFN的情况下，所述装置还包括以下至少一项：
    第三发送模块，用于向驻留在所述SFN的终端设备UE发送寻呼消息，所述寻呼消息是SFN特有的寻呼消息或者cell/TRP特有的寻呼消息；
    第四发送模块，用于向驻留在所述SFN的终端设备UE发送系统消息，所述系统消息是SFN特有的系统消息或者cell/TRP特有的系统消息。
  46. 根据权利要求38所述的连接建立装置，其中，当网络部署有高频范围和低频范围的情况下，所述SFN特有的小区包括低频范围内的小区；所述SFN内的小区或TRP包括所述高频范围内的小区；
    或者，
    网络中包括卫星通信网络的情况下，所述SFN特有的小区包括高空平台站HAPS小区或高轨卫星小区，所述SFN内的小区或TRP包括低轨卫星小区或地面基站覆盖的小区。
  47. 一种终端设备UE，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1-14任一项所述的连接建立方法的步骤。
  48. 一种网络侧设备，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15-23 任一项所述的连接建立方法的步骤。
  49. 一种可读存储介质，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1-23任一项所述的连接建立方法的步骤。
  50. 一种芯片，其特征在于，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程序或指令，实现如权利要求1至23中任一项所述的连接建立方法。
  51. 一种终端设备UE，其特征在于，包括所述终端设备被配置成用于执行如权利要求1至14中任一项所述的连接建立方法。
  52. 一种网络侧设备，其特征在于，包括所述网络侧设备被配置成用于执行如权利要求15至23中任一项所述的连接建立方法。
  53. 一种程序产品，所述程序产品存储在非易失性的可读存储介质，所述程序产品被处理器执行时实现如权利要求1至23中任一项所述的连接建立方法。
PCT/CN2021/120763 2020-09-29 2021-09-26 连接建立方法、装置、设备及存储介质 WO2022068741A1 (zh)

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