Random access method, device and related equipment

Abstract

The present application discloses a random access method, apparatus and related equipment, belonging to the field of communication technology. The random access method includes: when a terminal moves within at least one single frequency network SFN during the execution of a first random access RACH process, a first operation is performed; wherein the first operation includes any one of the following: continuing to execute the first RACH process; terminating the first RACH process and starting to execute the second RACH process; terminating the RACH process. The present application provides an implementation scheme of the RACH process in the SFN scenario, which effectively combines the RACH process with the SFN, can achieve the purpose of fast access to the network, thereby effectively saving terminal power consumption and access delay.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a random access method, device and related equipment. Background Art

[0002] As the frequency bands of future communication systems are deployed at higher and higher frequencies, the coverage of a single cell or Transmission Reception Point (TRP) is getting smaller and smaller. At the same time, future mobile communication systems support more high-speed scenarios, which brings frequent mobility to the terminal, thereby introducing more terminal measurements and causing higher power consumption of the terminal.

[0003] In order to reduce the power consumption of the terminal, cell free or single frequency network (SFN) will be an important deployment scenario in dense network or high-speed scenarios. However, in the prior art, there is no relevant solution for how to perform the random access channel (RACH) process when the SFN design is introduced. Summary of the invention

[0004] The embodiments of the present application provide a random access method, apparatus and related equipment, which can implement the RACH process when the SFN design is introduced.

[0005] In a first aspect, a random access method is provided, which is performed by a terminal, and the method includes:

[0006] When the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process, performing a first operation;

[0007] The first operation includes any one of the following:

[0008] Continue to perform the first RACH process;

[0009] terminating the first RACH process and starting to execute the second RACH process;

[0010] Abort the RACH procedure.

[0011] In a second aspect, a random access method is provided, which is performed by a network side device, and the method includes:

[0012] When the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process, performing a first operation;

[0013] The first operation includes any one of the following:

[0014] Continue to perform the first RACH process;

[0015] terminating the first RACH process and starting to execute the second RACH process;

[0016] Abort the RACH procedure.

[0017] According to a third aspect, a random access device is provided, the random access device comprising:

[0018] A first execution module, configured to execute a first operation when the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process;

[0019] The first operation includes any one of the following:

[0020] Continue to perform the first RACH process;

[0021] terminating the first RACH process and starting to execute the second RACH process;

[0022] Abort the RACH procedure.

[0023] In a fourth aspect, a random access device is provided, the random access device comprising:

[0024] A fourth execution module, configured to execute a first operation when the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process;

[0025] The first operation includes any one of the following:

[0026] Continue to perform the first RACH process;

[0027] terminating the first RACH process and starting to execute the second RACH process;

[0028] Abort the RACH procedure.

[0029] In a fifth aspect, a communication device is provided, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the first aspect, or implements the steps of the method described in the second aspect.

[0030] In a sixth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0031] In the seventh aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a network-side device program or instruction to implement the method described in the first aspect, or to implement the method described in the second aspect.

[0032] In an embodiment of the present application, if the terminal moves within at least one SFN during the execution of the first RACH process, then the terminal or the network side device can perform a first operation; wherein the first operation includes any one of the following: continuing to execute the first RACH process; terminating the first RACH process and starting to execute the second RACH process; terminating the RACH process. It can be seen that the embodiment of the present application provides an implementation scheme of the RACH process in the SFN scenario, which effectively combines the RACH process with the SFN, and can achieve the purpose of quickly accessing the network, thereby effectively saving terminal power consumption and access delay. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0034] Figure 2 is a schematic diagram of a SFN provided in an embodiment of the present application;

[0035] Figure 3 is a schematic diagram of a dense network provided in an embodiment of the present application;

[0036] Figure 4a This is one of the schematic diagrams of the random access process provided in the embodiment of the present application;

[0037] Figure 4b This is the second schematic diagram of the random access process provided in the embodiment of the present application;

[0038] Figure 5 This is one of the flow charts of the random access method provided in the embodiment of the present application;

[0039] Figure 6 This is the second flowchart of the random access method provided in the embodiment of the present application;

[0040] Figure 7 It is one of the structural diagrams of the random access device provided in the embodiment of the present application;

[0041] Figure 8This is the second structural diagram of the random access device provided in the embodiment of the present application;

[0042] Fig. 9 is a structural diagram of a communication device provided in an embodiment of the present application;

[0043] Fig.10 is a structural diagram of a terminal provided in an embodiment of the present application;

[0044] Fig.11 It is a structural diagram of the network side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally represents that the objects associated with each other are in an "or" relationship.

[0047] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. However, the following description describes a New Radio (NR) system for illustrative purposes, and NR terms are used in most of the following descriptions. These technologies can also be applied to applications other than NR system applications, such as the 6th generation (6 th Generation, 6G) communication system.

[0048] Figure 1A block diagram of a wireless communication system applicable to an embodiment of the present application is shown. The wireless communication system includes a terminal 11 and a network side device 12. Among them, the terminal 11 can also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), a wearable device (Wearable Device) or a vehicle-mounted device (VUE), a pedestrian terminal (PUE) and other terminal side devices, and the wearable device includes: a bracelet, a headset, glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 can be a base station or a core network, wherein the base station can 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), an extended service set (Extended Service Set, ESS), a B node, an evolved B node (eNB), a home B node, a home evolved B node, a WLAN access point, a WiFi node, a TRP or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary.

[0049] For ease of understanding, some contents involved in the embodiments of the present invention are described below:

[0050] 1. SFN.

[0051] SFN transmission solution: Multiple cells or multiple transmission points send the same signal. There is no co-channel interference between different cells, and multiple signals can improve the signal to interference plus noise ratio (SINR), transmission quality and coverage effect.

[0052] Multiple cells that make up SFN can share a cell ID, which is the ID of the super cell. Therefore, in some cases, SFN can also be called a super cell. Figure 2 , Figure 2The figure shows a SFN consisting of 7 cells, namely a super cell.

[0053] Multiple cells can transmit signals through SFN transmission. For example, each cell transmits with a wide beam. At a certain moment, the terminal can receive wide beams transmitted by multiple cells, thereby obtaining diversity gain. In the SFN transmission scheme, the terminal does not need to frequently reselect or switch cells between cells.

[0054] 2. IDLE or INACTIVE UE mobility.

[0055] When an IDLE or INACTIVE UE is moving, the network provides the priority of each frequency point.

[0056] For a co-frequency neighboring cell, if the measurement evaluation value of the target (or neighboring) cell (calculated by adding an offset to the measurement result of the target (or neighboring) cell) is better than the measurement evaluation value of the serving cell (calculated by adding an offset to the measurement result of the serving cell), and lasts for a period of time (e.g., a period configured by the network), and the UE stays in the current serving cell for more than a period of time (e.g., 1s agreed by the protocol), the UE reselects to the target (or neighboring) cell.

[0057] For a high priority inter-frequency or inter-system (inter Radio Access Technology, inter-RAT) neighbor cell, if the measurement evaluation value of the target (or neighbor) cell exceeds the threshold and lasts for a period of time (e.g., the period configured by the network), the UE reselects to the target (or neighbor) cell.

[0058] For a low priority inter-frequency or inter-RAT neighboring cell, if the measurement evaluation value of the target (or neighboring) cell is greater than the threshold value and the measurement evaluation value of the current serving cell is less than the threshold value, and lasts for a period of time (e.g., the period configured by the network), the UE reselects to the target (or neighboring) cell.

[0059] For inter-frequency or inter-RAT neighbor cells, when the target (or neighbor) frequency priority is the same as the current serving (or resident) frequency priority, the cell reselection method is the same as the cell reselection method for the same-frequency cell.

[0060] The IDLE / INACTIVE UE triggers the connection establishment process by receiving the paging message sent by the network side, thereby sending and receiving data.

[0061] 3. Cell free or dense network.

[0062] like Figure 3 As shown, the coverage of low frequency (eg FR1) cells is larger than that of high frequency (eg FR2) cells. When a terminal moves within the coverage of FR1, it may continuously change FR2 cells, but the FR1 cell does not change.

[0063] When the terminal initially activates an FR2 cell or switches to an FR2 cell, it needs to continuously measure the signal quality of each beam. Due to the large number of beams, it will lead to a long cell activation time or cell switching time. For example, when certain conditions are met, the measurement time can reach the second level. The above-mentioned long measurement time will also lead to high UE power consumption.

[0064] 4. Centralized Control Unit (CU) and Distributed Unit (DU).

[0065] In the fifth generation (5 th -Generation, 5G) system, the base station (gNB) can place its protocol stack entities on different control units respectively. For example, Radio Resource Control (RRC) and Packet Data Convergence Protocol (PDCP) are placed on the CU, and Radio Link Control (RLC) and Media Access Control (MAC) / Physical Layer (PHY) are placed on the DU. Among them, the CU and DU have certain management rights of wireless resources. For example, the CU can manage the cells connected to it through RRC messages, and the DU can manage the cells connected to it through MAC control element (CE) messages. Multiple DUs are connected to one CU, and the CU is connected to the core network and other CUs.

[0066] 5. Basic process of terminal system access.

[0067] The following steps may be included:

[0068] Step 1: Initial network search: including synchronization of synchronization signal / physical broadcast channel signal block (SynchronizationSignal and PBCH block, SSB) and reception of system information.

[0069] Specifically, the primary synchronization signal (PSS) can be received first, then the secondary synchronization signal (SSS) can be received, and then the physical broadcast channel (PBCH) can be received: the SSB index (index), and the information in the demodulation reference signal (DMRS) and the master information block (MIB) of the PBCH can be obtained.

[0070] Step 2: Receive broadcasted system information (SI) based on the information obtained above, which includes information required for accessing the system.

[0071] Step 3: Perform random access based on the information required for system access obtained above.

[0072] 6. Random Access Channel (RACH) process.

[0073] Currently, the RACH process is divided into contention random access and non-contention random access. The contention random access process has four steps, namely, messages (Msg.) 1 to Msg.4, while the non-contention random access process only requires two steps, Msg.1 and Msg.2.

[0074] like Figure 4a As shown, the contention-based random access process may include the following steps:

[0075] Step 1: UE sends Msg.1 to eNB.

[0076] Msg.1 may include a random access preamble (Random Access Preamble).

[0077] Step 2: The eNB sends Msg.2 to the UE.

[0078] Msg.2 may include a Random Access Response (RAR).

[0079] Step 3: UE sends message 3 to eNB.

[0080] Msg.3 may include scheduled transmission.

[0081] Step 4: eNB sends Msg.4 to UE.

[0082] Msg.4 may include contention resolution.

[0083] like Figure 4b As shown, the non-contention random access process may include the following steps:

[0084] Step 0: The eNB sends a random access preamble assignment to the UE.

[0085] Step 1: UE sends Msg.1 to eNB.

[0086] Msg.1 may include a random access preamble.

[0087] Step 2: eNB sends message 2 to UE.

[0088] Msg.2 may include a random access response.

[0089] Msg.2 of both contention random access and non-contention random access sends RAR. The UE monitors the RAR corresponding to the Random Access-Radio Network Temporary Identifier (RA-RNTI) in the RAR window.

[0090] Since there is a problem of UE sending the same preamble on the same PRACH resource in competitive random access, after receiving Msg.2, it is necessary to send Msg.3 according to the uplink grant (UL grant) in Msg.2, and the UE will carry the UE identifier on message3, and start the contention resolution timer (timer) at the same time when Msg.3 is sent. If the UE receives Msg.4 sent by the base station before the contention resolution timer times out, the contention resolution is successful. The base station will carry the UE identifier in Msg.4. The UE can determine whether it is its own message 4 based on the UE identifier carried in message4, and thus determine whether the contention is successful.

[0091] Furthermore, in order to shorten the access system delay, a two-step RACH process is used, that is, a RACH process including two steps: the terminal sends Msg.A to the network side, and then receives Msg.B sent by the network side. Among them, Msg.A has Figure 4a The functions of Msg.1 and Msg.3, Msg.B has Figure 4aThe functions of Msg.2 and Msg.4; or, Msg.A has Figure 4b The function of Msg.1 in Msg.B is Figure 4b The function of Msg.2.

[0092] In the embodiments of the present application:

[0093] SFN specific can be understood as: the relevant configuration corresponding to each SFN is independent, and the configuration within the SFN range is the same. Cell or TRP specific can also be called: SFN specific, Super cell specific, Super cell specific, first layer specific; where the first layer is the SFN layer.

[0094] Cell / TRP specific can be understood as: the relevant configuration corresponding to each Cell / TRP is independent, and the configuration within the Cell / TRP range is the same. Cell / TRP specific can also be called: cell or TRP corresponding, second layer corresponding; where the second layer is the cell layer or TRP layer.

[0095] The reference signal (RS) can be any of the following: SSB, channel state information (CSI)-RS, cell specific RS (CRS), sounding reference signal (SRS), demodulation reference signal (DMRS) and other reference signals.

[0096] Specifically, in actual deployment, SFN is the range of a Super cell. The range of an SFN includes several cells or TRPs, and the SFN super cell is usually called the SFN layer. The cell corresponding to the Super cell or SFN layer is a SFN-specific (specific) cell; and the several cells or TRPs included in the SFN range are the cell / TRP layer. The cell / TRP corresponding to this layer is a cell / TRP-specific (specific) cell or TRP. Correspondingly, the reference signal RS, system message SI, paging message Paging, etc. on the SFN layer are all called SFN-specific RS, SI, paging, etc. The reference signal RS, system message SI, paging message Paging, etc. on the cell / TRP layer are all called cell / TRP-specific RS, SI, paging, etc.

[0097] See also Figure 5 , Figure 5 This is one of the flow charts of the random access method provided in the embodiment of the present application. The random access method in the embodiment of the present application can be executed by a terminal.

[0098] like Figure 5 As shown, the random access method may include the following steps:

[0099] Step 501: When a terminal moves within at least one single frequency network SFN during a first random access RACH process, a first operation is performed.

[0100] In the embodiment of the present disclosure, the first operation may include any one of the following:

[0101] Continue to perform the first RACH process;

[0102] terminating the first RACH process and starting to execute the second RACH process;

[0103] Abort the RACH procedure.

[0104] In the scenario where the first operation includes continuing to execute the first RACH process, even if the terminal moves within at least one SFN during the execution of the first RACH process, the terminal can continue to execute the first RACH process. It can be seen that in this case, the RACH process executed by the terminal will not be interrupted due to the movement of the terminal, thereby improving the smoothness of random access.

[0105] In a scenario where the first operation includes terminating the first RACH process and starting to execute the second RACH process, if the terminal moves within at least one SFN during the execution of the first RACH process, the terminal can restart the RACH process, that is, terminate the currently executed RACH process and start a new RACH process, thereby improving the reliability of random access.

[0106] In a scenario where the first operation includes terminating the RACH process, if the terminal moves within at least one SFN during execution of the first RACH process, the terminal may terminate all RACH processes including the first RACH process, thereby reducing terminal power consumption.

[0107] In the random access method of the embodiment of the present application, if the terminal moves within at least one SFN during the execution of the first RACH process, then the terminal can perform a first operation; wherein the first operation includes any one of the following: continuing to execute the first RACH process; terminating the first RACH process and starting to execute the second RACH process; terminating the RACH process. It can be seen that the embodiment of the present application provides an implementation scheme of the RACH process in the SFN scenario, which effectively combines the RACH process with the SFN, and can achieve the purpose of quickly accessing the network, thereby effectively saving terminal power consumption and access delay.

[0108] In the embodiment of the present application, during implementation, in one implementation mode, as long as the terminal moves within at least one SFN during the execution of the first RACH process, the terminal can perform the first operation.

[0109] In another implementation, when the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process, a certain condition needs to be met before the terminal can execute the first operation.

[0110] Optionally, the performing the first operation includes:

[0111] In a case where the reference signal RS received by the terminal includes an SFN-specific RS, a first operation is performed.

[0112] In this optional implementation, when the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process, the terminal will perform the first operation only if the RS received by the terminal includes an RS specific to the SFN.

[0113] In a specific implementation, the RS received by the terminal includes an SFN-specific RS, which may include at least one of the following: the RS received by the terminal includes an SFN-specific RS and a Cell / TRP-specific RS; the RS received by the terminal includes only an SFN-specific RS.

[0114] In this optional implementation, if the RS received by the terminal does not include an SFN-specific RS, that is, the RS received by the terminal does not include an SFN-specific RS, such as: the RS received by the terminal only includes a Cell / TRP-specific RS, then even if the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process, the terminal may not perform the first operation. In this case, optionally, the terminal may implement an object change based on the measurement result of the RS; and / or, the terminal may select a RACH resource for random access based on the RS measurement result. In specific implementation, the object change may be specifically manifested as any of the following: object selection, object reselection, object switching (synchronous reconfiguration), etc.

[0115] The above-mentioned SFN-specific RS can also be understood as the RS corresponding to the SFN.

[0116] The measurement results include at least one of the following: Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Received Signal Strength Indication (RSSI), Signal-to-Noise and Interference Ratio (SINR), Block Error Rate (BLER).

[0117] In the embodiment of the present application, optionally, the movement occurs within at least one SFN, including any one of the following:

[0118] a) moving from a first object to a second object within a first SFN;

[0119] b) moving from the second SFN to the third SFN, and the terminal accessing the SFN layer;

[0120] c) moving from a third object in a fourth SFN to a fourth object in a fifth SFN;

[0121] Among them, the object includes any of the following items: a cell unique to an SFN, a cell or a transceiver point TRP unique to a cell, a TRP.

[0122] In a), the terminal changes an object within the first SFN (range), moving from a first object included in the first SFN to a second object included in the first SFN.

[0123] In b), the terminal changes SFN and moves from the second SFN to the third SFN. In this case, the terminal accesses the SFN layer, or does not access the cell or TRP layer. In other words, the terminal resides in or is connected to the cell of the SFN layer, and does not reside in or is connected to the cell of the cell / TRP layer.

[0124] In c), the terminal changes the object between SFNs, and moves from the third object in the fourth SFN to the fourth object in the fifth SFN.

[0125] In an embodiment of the present application, in a scenario where the first operation includes continuing to execute the first RACH process, the RACH resources used by the terminal to continue to execute the first RACH process may be the same as or different from the RACH resources used by the terminal to execute the first RACH process before the terminal moves within at least one SFN. The specific decision may be based on actual conditions, and the embodiment of the present application does not limit this.

[0126] Optionally, the continuing to perform the first RACH process includes:

[0127] The first RACH process continues to be performed according to the first RACH resource.

[0128] In specific implementation, optionally, the first RACH resource can be configured by any one of the following: SFN-specific system information (System Information, SI), cell or TRP-specific SI.

[0129] As can be seen from the foregoing, the movement within at least one SFN may include multiple forms of expression, and the RS received by the terminal may include multiple forms of expression. In the embodiment of the present application, for the movement within at least one SFN of different forms and / or the RS received by the terminal of different forms, the expression forms of the first RACH resource may be different or the same, as described in detail as follows:

[0130] Case 1: The movement occurs within at least one SFN, including: moving from a first object to a second object within a first SFN.

[0131] For case 1, the first RACH resource may be any one of the following: a RACH resource corresponding to the second object, a RACH resource corresponding to the first object, and a RACH resource related to an RS specific to the first SFN. That is, the terminal may continue to perform the first RACH process by using: a RACH resource corresponding to a source object (i.e., the first object), or a RACH resource corresponding to a target object (or referred to as a new object, i.e., the second object), or a RACH resource related to an RS specific to the SFN (i.e., the first SFN) where the terminal is located.

[0132] Furthermore, the first RACH resource satisfies any of the following:

[0133] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource corresponding to the second object, and a RACH resource corresponding to the first object;

[0134] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to an RS specific to the first SFN, a RACH resource corresponding to the second object, and a RACH resource corresponding to the first object;

[0135] In a case where the RS received by the terminal includes only the first RS, and the first RS has a related RACH resource, the first RACH resource is: a RACH resource related to an RS specific to the first SFN;

[0136] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, a TRP; the first RS is an RS specific to an SFN; or the second RS is an RS specific to a cell or TRP.

[0137] In specific implementation, the first RACH resource may be determined by a protocol agreement, configured by a network side device, or coordinated by the first object and the second object, which may be determined according to actual conditions, and the embodiment of the present application does not limit this.

[0138] Case 2: the movement occurs within at least one SFN, including: moving from the second SFN to the third SFN, and the terminal accesses the SFN layer.

[0139] For situation 2, since the terminal is not connected to the Cell / TRP layer, the terminal cannot use the object-specific RACH resources. The first RACH resource can be any one of the following: RACH resources configured by the target system information SI in the second SFN, RACH resources configured by the target SI in the third SFN, RACH resources related to the RS specific to the second SFN, and RACH resources related to the RS specific to the third SFN. That is, the terminal can continue to perform the first RACH process using: RACH resources configured by the target SI in the source SFN (i.e., the second SFN), or, RACH resources configured by the target SI in the target SFN (i.e., the third SFN), or, RACH resources related to the RS specific to the source SFN (i.e., the second SFN), or, RACH resources related to the RS specific to the target SFN (i.e., the third SFN).

[0140] Furthermore, the first RACH resource satisfies any of the following:

[0141] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource configured by target system information SI in the second SFN, and a RACH resource configured by target SI in the third SFN;

[0142] In a case where the RS received by the terminal includes a first RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to the RS specific to the second SFN, and a RACH resource related to the RS specific to the third SFN;

[0143] The first RS is an RS specific to the SFN, or the second RS is an RS specific to the cell or TRP; the target SI is: SI specific to the SFN, or SI specific to the cell or TRP.

[0144] In specific implementation, the first RACH resource may be determined by protocol agreement, by network side device configuration, or by coordination between the second SFN and the third SFN, which may be determined according to actual conditions and is not limited in this embodiment of the present application.

[0145] Case three: the movement occurs within at least one SFN, including: moving from a third object within a fourth SFN to a fourth object within a fifth SFN.

[0146] For case 3, the first RACH resource may be any one of the following: a RACH resource associated with an RS specific to the fourth SFN, a RACH resource associated with an RS specific to the fifth SFN, a RACH resource corresponding to the third object, and a RACH resource corresponding to the fourth object. That is, the terminal may continue to perform the first RACH process by using: a RACH resource corresponding to a source object (i.e., the third object), or a RACH resource corresponding to a target object (or referred to as a new object, i.e., the fourth object), or a RACH resource associated with an RS specific to the source SFN (i.e., the fourth SFN), or a RACH resource associated with an RS specific to the target SFN (i.e., the fifth SFN).

[0147] Furthermore, the first RACH resource satisfies any of the following:

[0148] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource corresponding to the third object, and a RACH resource corresponding to the fourth object;

[0149] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to an RS specific to the fourth SFN, a RACH resource related to an RS specific to the fifth SFN, a RACH resource corresponding to the third object, and a RACH resource corresponding to the fourth object;

[0150] In a case where the RS received by the terminal includes only the first RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to the RS specific to the fourth SFN, and a RACH resource related to the RS specific to the fifth SFN;

[0151] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

[0152] In specific implementation, the first RACH resource may be determined by protocol agreement, by network side device configuration, or by coordination between the third object and the fourth object, which may be determined according to actual conditions and is not limited in this embodiment of the present application.

[0153] In an embodiment of the present application, in a scenario where the first operation includes terminating the first RACH process and starting to execute the second RACH process, the RACH resources used by the terminal to execute the second RACH process may be the same as or different from the RACH resources used to execute the first RACH process before the terminal moves within at least one SFN. The specific decision may be based on actual conditions, and the embodiment of the present application does not limit this.

[0154] Optionally, the starting to execute the second RACH process includes:

[0155] A second RACH procedure begins to be executed according to the second RACH resource.

[0156] In specific implementation, optionally, the second RACH resource can be configured by any one of the following: SFN-specific system information (System Information, SI), cell or TRP-specific SI.

[0157] As can be seen from the foregoing, the movement within at least one SFN may include multiple forms of expression, and the RS received by the terminal may include multiple forms of expression. In the embodiment of the present application, for the movement within at least one SFN of different forms and / or the RS received by the terminal of different forms, the expression forms of the second RACH resource may be different or the same, as described in detail as follows:

[0158] Case 1: The movement occurs within at least one SFN, including: moving from a first object to a second object within a first SFN.

[0159] For case 1, the second RACH resource may be any one of the following: a RACH resource associated with an RS specific to the first SFN, or a RACH resource corresponding to the second object. That is, the terminal may use, when performing the second RACH process, a RACH resource corresponding to a target object (or a new object, i.e., the second object), or a RACH resource associated with an RS specific to the SFN where the terminal is located (i.e., the first SFN).

[0160] Furthermore, the second RACH resource satisfies any one of the following:

[0161] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: a RACH resource corresponding to the second object;

[0162] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has a related RACH resource, the second RACH resource is any one of the following: a RACH resource related to an RS specific to the first SFN, and a RACH resource corresponding to the second object;

[0163] In a case where the RS received by the terminal includes only the first RS, and the first RS has related RACH resources, the second RACH resources are: RACH resources related to the RS specific to the first SFN;

[0164] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

[0165] In specific implementation, the first RACH resource may be determined by a protocol agreement, configured by a network side device, or coordinated by the first object and the second object, which may be determined according to actual conditions, and the embodiment of the present application does not limit this.

[0166] Case 2: Movement occurs within at least one SFN, including: movement from the second SFN to the third SFN, and the terminal accesses the SFN layer.

[0167] For case 2, since the terminal is not connected to the Cell / TRP layer, the terminal cannot use the object-specific RACH resources. The second RACH resource can be any of the following: the RACH resource configured by the target SI in the third SFN, the RACH resource related to the RS specific to the third SFN. That is, the terminal can use the following to perform the second RACH process: the RACH resource configured by the target SI in the target SFN (i.e., the third SFN), or the RACH resource related to the RS specific to the target SFN (i.e., the third SFN).

[0168] Furthermore, the second RACH resource satisfies any one of the following:

[0169] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: a RACH resource configured by a target SI in the third SFN;

[0170] In a case where the RS received by the terminal includes a first RS, and the first RS has a related RACH resource, the second RACH resource is: a RACH resource related to an RS specific to the third SFN;

[0171] The first RS is an RS specific to the SFN, or the second RS is an RS specific to the cell or TRP; the target SI is: SI specific to the SFN, or SI specific to the cell or TRP.

[0172] In specific implementation, the first RACH resource may be determined by protocol agreement, by network side device configuration, or by coordination between the second SFN and the third SFN, which may be determined according to actual conditions and is not limited in this embodiment of the present application.

[0173] Case three: the movement occurs within at least one SFN, including: moving from a third object within a fourth SFN to a fourth object within a fifth SFN.

[0174] For case 3, the second RACH resource may be any one of the following: a RACH resource associated with an RS specific to the fifth SFN, or a RACH resource corresponding to the fourth object. That is, the terminal may continue to perform the first RACH process by using: a RACH resource corresponding to a target object (or a new object, i.e., the fourth object), or a RACH resource associated with an RS specific to the target SFN (i.e., the fifth SFN).

[0175] Furthermore, the second RACH resource satisfies any one of the following:

[0176] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: a RACH resource corresponding to the fourth object;

[0177] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has a related RACH resource, the second RACH resource is any one of the following: a RACH resource related to an RS specific to the fifth SFN, and a RACH resource corresponding to the fourth object;

[0178] In a case where the RS received by the terminal includes only the first RS, and the first RS has related RACH resources, the second RACH resources are: RACH resources related to the RS specific to the fifth SFN;

[0179] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

[0180] In specific implementation, the first RACH resource may be determined by protocol agreement, by network side device configuration, or by coordination between the third object and the fourth object, which may be determined according to actual conditions and is not limited in this embodiment of the present application.

[0181] It should be noted that, in the embodiment of the present application, the RACH resources corresponding to the object (such as the first object or the second object) can be configured by any of the following: SFN-specific SI, cell-specific SI or TRP-specific SI. The RACH resources related to the RS specific to the SFN (such as the first SFN) can be configured by any of the following: SFN-specific SI, cell-specific SI or TRP-specific SI.

[0182] In the embodiment of the present application, the specific implementation method of the first operation can be determined by protocol agreement, network side device configuration or based on conditions, which can be determined according to actual conditions, and the embodiment of the present application does not limit this.

[0183] The following describes a specific implementation of the first operation based on a conditional determination:

[0184] 1) Optionally, when the first condition is met, the first operation includes: terminating the RACH process. That is, when the first condition is met, if the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process, then the terminal can terminate the RACH process.

[0185] In specific implementation, whether the first condition is satisfied may be determined based on actual conditions, and the present application embodiment does not limit this. Optionally, the first condition may include at least one of the following:

[0186] The first RACH process uses a RACH resource related to the second RS;

[0187] The RACH resources configured by the second SI corresponding to different objects are different or independent;

[0188] Among them, the second RS is an RS specific to a cell or TRP; the object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, and a TRP; the second SI is an SI specific to a cell or TRP.

[0189] The different or independent RACH resources configured by the second SI corresponding to different objects can be understood as: the RACH resources configured by the SI corresponding to each object are independent or different from each other, and the RACH resources configured by the SI corresponding to the same object can be the same.

[0190] 2) Optionally, when the second condition is met, the first operation includes: terminating the first RACH process and starting to execute the second RACH process. That is, when the second condition is met, if the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process, then the terminal may terminate the first RACH process and start to execute the second RACH process.

[0191] In specific implementation, whether the second condition is satisfied may be determined based on actual conditions, and the present application embodiment does not limit this. Optionally, the second condition may include at least one of the following:

[0192] The first RACH process uses a RACH resource related to the second RS;

[0193] The RACH resources configured by the second SI corresponding to different objects are different or independent;

[0194] Among them, the second RS is an RS specific to a cell or TRP; the object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, and a TRP; the second SI is an SI specific to a cell or TRP.

[0195] 3) Optionally, when the third condition is met, the first operation includes: continuing to perform the first RACH process. That is, when the third condition is met, if the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process, then the terminal can continue to perform the first RACH process.

[0196] In specific implementation, whether the third condition is satisfied can be determined based on actual conditions, and the present application embodiment does not limit this. Optionally, the third condition is satisfied including at least one of the following:

[0197] The first RACH process uses a RACH resource related to the first RS;

[0198] The RACH resource used by the first RACH process is determined by the at least one SFN coordination or by the object coordination within the SFN range;

[0199] The first RS is an RS specific to SFN.

[0200] The third condition is satisfied when: the RACH resource used by the first RACH process is determined by the at least one SFN coordination or by an object within the SFN range:

[0201] If the movement occurs within at least one SFN, including: moving from a first object to a second object within a first SFN, then the third condition is met and can be specifically manifested as: the RACH resources used by the first RACH process are determined by coordination between the first object and the second object.

[0202] If the movement occurs within at least one SFN, including: moving from the second SFN to the third SFN, and the terminal accesses the SFN layer, then the third condition is met and can be specifically manifested as: the RACH resources used by the first RACH process are determined by coordination between the second SFN and the third SFN.

[0203] If the movement occurs within at least one SFN, including: moving from a third object within a fourth SFN to a fourth object within a fifth SFN, then the third condition is met and can be specifically manifested as: the RACH resources used by the first RACH process are determined by coordination between the third object and the fourth object.

[0204] In the embodiment of the present application, the terminating RACH process may also be referred to as: stopping (Stop) RACH process, releasing (Release) RACH process.

[0205] Optionally, the terminating the RACH process includes at least one of the following:

[0206] Stop sending uplink messages during the RACH process;

[0207] Stop receiving downlink messages during the RACH process;

[0208] Release the resources related to the RACH process;

[0209] Stop or reset the timers and counters related to the RACH process.

[0210] In a specific implementation, the uplink message may include at least one of the following items in the RACH process: Msg.1, Msg.3, Msg.A, and Msg.5. The downlink message may include at least one of the following items in the RACH process: Msg.2, Msg.4, and Msg.B.

[0211] In the embodiment of the present application, optionally, before performing the first operation, the method further includes:

[0212] Acquire a candidate RACH resource according to the first information;

[0213] performing the first RACH process according to the candidate RACH resource;

[0214] The first information includes at least one of the following: SI specific to a cell or TRP; SI specific to an SFN; a Radio Resource Control (RRC) message; or a paging message.

[0215] In specific implementation, before initiating the first RACH, the terminal may first receive first information and obtain candidate RACH resources from the first information; then, the first RACH process may be started according to the candidate RACH resources. It is understandable that the above steps occur before the terminal moves within at least one SFN.

[0216] In the case where the first information includes an RRC message, the RRC message may be a dedicated RRC message sent by a network side device during the previous RRC release or suspension (Suspend), but is not limited to this.

[0217] Optionally, the candidate RACH resources include at least one of the following: RS-related RACH resources specific to a cell or TRP, and RS-related RACH resources specific to a SFN.

[0218] In specific implementation, the candidate RACH resource may be related to the representation form of the RS received by the terminal, as described below:

[0219] In the case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no associated RACH resources, the candidate RACH resources include: RACH resources associated with RS specific to a cell or TRP. That is, when initiating random access, the terminal may use RACH resources associated with RS specific to a cell / TRP; or, the terminal may perform random access based on RS specific to a cell / TRP.

[0220] In the case where the RS received by the terminal includes a first RS and a second RS, and the first RS has related RACH resources, the candidate RACH resources include at least one of the following: a RACH resource related to a cell or TRP-specific RS, and a RACH resource related to a SFN-specific RS. That is, when initiating random access, the terminal can use a RACH resource associated with a cell / TRP-specific RS and / or a RACH resource associated with a SFN-specific RS.

[0221] When the RS received by the terminal includes only the first RS and the first RS has related RACH resources, the candidate RACH resources include at least one of the following: SFN-specific RS-related RACH resources. That is, when initiating random access, the terminal can use the RACH resources associated with the SFN specific SSB.

[0222] Optionally, performing the first RACH process according to the candidate RACH resource includes:

[0223] selecting a third RACH resource from the candidate RACH resources according to the second information;

[0224] performing the first RACH process according to the third RACH resource;

[0225] The second information includes at least one of the following: a preset rule, a measurement result of an RS specific to a cell or TRP, and a measurement result of an RS specific to an SFN.

[0226] In specific implementation, the preset rules may be agreed upon by a protocol or configured by a network-side device, and the specific configuration may depend on actual conditions, and the embodiments of the present application do not limit this.

[0227] In the embodiment of the present application, optionally, the method further includes:

[0228] When the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process, performing a second operation;

[0229] The second operation includes at least one of the following:

[0230] Receive SI specific to the cell or TRP;

[0231] Receive SFN-specific SI;

[0232] Receive RS specific to the cell or TRP;

[0233] Receive SFN-specific RS.

[0234] In a specific implementation, the specific manifestation of the second operation may be related to the specific manifestation of the movement within the at least one SFN and / or the specific manifestation of the RS received by the terminal, which is specifically described as follows:

[0235] 1) When the RS received by the terminal includes a first RS and a second RS, and the first RS has no associated RACH resources, the second operation includes at least one of the following: receiving SI specific to a cell or TRP; receiving SI specific to an SFN.

[0236] 2) The RS received by the terminal includes a first RS and a second RS, and the first RS has related RACH resources; the movement occurs within at least one SFN, including: when moving from a first object to a second object within the first SFN, the second operation includes at least one of the following: receiving SI specific to a cell or TRP; receiving SI specific to an SFN.

[0237] 3) The RS received by the terminal includes a first RS and a second RS, and the first RS has related RACH resources; the movement occurs within at least one SFN, including: when moving from the second SFN to the third SFN and the terminal accesses the SFN layer, or, moving from the third object in the fourth SFN to the fourth object in the fifth SFN, the second operation includes at least one of the following: receiving SI specific to the cell or TRP; receiving SI specific to the SFN; receiving RS specific to the SFN.

[0238] 4) The RS received by the terminal only includes the first RS, and the first RS has related RACH resources; the movement occurs within at least one SFN, including: when moving from a first object to a second object within the first SFN, the second operation includes at least one of the following: receiving SI specific to a cell or TRP; receiving SI specific to an SFN.

[0239] 5) When the RS received by the terminal includes only the first RS, and the first RS has related RACH resources, the movement occurs within at least one SFN, including: when moving from the second SFN to the third SFN and the terminal accesses the SFN layer, or, moving from the third object in the fourth SFN to the fourth object in the fifth SFN, the second operation includes at least one of the following: receiving SI specific to the cell or TRP; receiving SI specific to the SFN; receiving RS specific to the SFN.

[0240] In the embodiment of the present application, optionally, the method further includes:

[0241] receiving a RS specific to a cell or TRP according to the third information;

[0242] The third information includes at least one of the following: a Paging message, SI corresponding to a cell or TRP, and SI corresponding to SFN.

[0243] In specific implementation, the third information may carry relevant information of RS specific to the cell or TRP. In this way, after receiving the third information, the terminal can receive RS specific to the cell or TRP based on the relevant information of RS specific to the cell or TRP obtained from the third information.

[0244] The terminal can receive the RS specific to the cell or TRP according to the third information before initiating random access each time, or before sending the preamble code each time. Of course, the reception of the RS specific to the cell or TRP in other cases can also be received according to the third information.

[0245] In an embodiment of the present application, the coverage of a cell specific to an SFN is greater than the coverage of a cell specific to a TRP.

[0246] Optionally, when the network is deployed with a high frequency range and a low frequency range, the SFN-specific cells include cells in the low frequency range, and the cells or TRP-specific cells include cells in the high frequency range; or,

[0247] When the network includes a satellite communication network, the SFN-specific cells include high altitude platform station (HAPS) cells or high-orbit satellite cells, and the cells or TRP-specific cells include low-orbit satellite cells or cells covered by ground base stations.

[0248] See also Figure 6 , Figure 6 This is the second flowchart of the random access method provided in the embodiment of the present application. The random access method in the embodiment of the present application is executed by a network side device.

[0249] like Figure 6 As shown, the random access method may include the following steps:

[0250] Step 601: When a terminal moves within at least one single frequency network SFN during a first random access RACH process, a first operation is performed.

[0251] The first operation includes any one of the following:

[0252] Continue to perform the first RACH process;

[0253] terminating the first RACH process and starting to execute the second RACH process;

[0254] Abort the RACH procedure.

[0255] In the random access method of the embodiment of the present application, if the terminal moves within at least one SFN during the execution of the first RACH process, then the terminal or the network side device can perform a first operation; wherein the first operation includes any one of the following: continuing to execute the first RACH process; terminating the first RACH process and starting to execute the second RACH process; terminating the RACH process. It can be seen that the embodiment of the present application provides an implementation scheme of the RACH process in the SFN scenario, which effectively combines the RACH process with the SFN, can achieve the purpose of fast access to the network, thereby effectively saving terminal power consumption and access delay.

[0256] Optionally, the movement occurs within at least one SFN, including any one of the following:

[0257] moving from a first object to a second object within a first SFN;

[0258] Moving from the second SFN to a third SFN, and the terminal accessing the SFN layer;

[0259] moving from a third object within a fourth SFN to a fourth object within a fifth SFN;

[0260] Among them, the object includes any of the following items: a cell unique to an SFN, a cell or a transceiver point TRP unique to a cell, a TRP.

[0261] Optionally, the performing the first operation includes:

[0262] In a case where the reference signal RS sent by the network side device includes an RS specific to the SFN, a first operation is performed.

[0263] Optionally, the continuing to perform the first RACH process includes:

[0264] The first RACH process continues to be performed according to the first RACH resource.

[0265] Optionally, the movement within at least one SFN includes: in a case where the movement is from a first object to a second object within a first SFN, the first RACH resource satisfies any one of the following:

[0266] When the RS sent by the network side device includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource corresponding to the second object, and a RACH resource corresponding to the first object;

[0267] In a case where the RS sent by the network side device includes a first RS and a second RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to an RS specific to the first SFN, a RACH resource corresponding to the second object, and a RACH resource corresponding to the first object;

[0268] In a case where the RS sent by the network side device includes only the first RS, and the first RS has related RACH resources, the first RACH resources are: RACH resources related to the RS specific to the first SFN;

[0269] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, a TRP; the first RS is an RS specific to an SFN; or the second RS is an RS specific to a cell or TRP.

[0270] Optionally, when the movement occurs within the at least one SFN, including: moving from the second SFN to the third SFN, and the terminal accesses the SFN layer, the first RACH resource satisfies any one of the following:

[0271] When the RS sent by the network side device includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource configured by the target system information SI in the second SFN, and a RACH resource configured by the target SI in the third SFN;

[0272] In a case where the RS sent by the network side device includes a first RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to the RS specific to the second SFN, and a RACH resource related to the RS specific to the third SFN;

[0273] The first RS is an RS specific to the SFN, or the second RS is an RS specific to the cell or TRP; the target SI is: SI specific to the SFN, or SI specific to the cell or TRP.

[0274] Optionally, when the movement occurs within the at least one SFN, including: moving from a third object within a fourth SFN to a fourth object within a fifth SFN, the first RACH resource satisfies any one of the following:

[0275] When the RS sent by the network side device includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource corresponding to the third object, and a RACH resource corresponding to the fourth object;

[0276] In a case where the RS sent by the network side device includes a first RS and a second RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to an RS specific to the fourth SFN, a RACH resource related to an RS specific to the fifth SFN, a RACH resource corresponding to the third object, and a RACH resource corresponding to the fourth object;

[0277] In a case where the RS sent by the network side device includes only the first RS, and the first RS has related RACH resources, the first RACH resources are any one of the following: a RACH resource related to the RS specific to the fourth SFN, and a RACH resource related to the RS specific to the fifth SFN;

[0278] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

[0279] Optionally, the first RACH resource is configured by any one of the following: SFN-specific SI, cell- or TRP-specific SI.

[0280] Optionally, the starting to execute the second RACH process includes:

[0281] A second RACH procedure begins to be executed according to the second RACH resource.

[0282] Optionally, the movement within at least one SFN includes: in a case where the movement occurs from a first object to a second object within a first SFN, the second RACH resource satisfies any one of the following:

[0283] When the RS sent by the network side device includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: a RACH resource corresponding to the second object;

[0284] In a case where the RS sent by the network side device includes a first RS and a second RS, and the first RS has a related RACH resource, the second RACH resource is any one of the following: a RACH resource related to an RS specific to the first SFN, and a RACH resource corresponding to the second object;

[0285] In a case where the RS sent by the network side device includes only the first RS, and the first RS has related RACH resources, the second RACH resources are: RACH resources related to the RS specific to the first SFN;

[0286] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

[0287] Optionally, when the movement occurs within the at least one SFN, including: moving from the second SFN to the third SFN, and the terminal accesses the SFN layer, the second RACH resource satisfies any one of the following:

[0288] When the RS sent by the network side device includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: a RACH resource configured by the target SI in the third SFN;

[0289] In a case where the RS sent by the network side device includes a first RS, and the first RS has a related RACH resource, the second RACH resource is: a RACH resource related to an RS specific to the third SFN;

[0290] The first RS is an RS specific to the SFN, or the second RS is an RS specific to the cell or TRP; the target SI is: SI specific to the SFN, or SI specific to the cell or TRP.

[0291] Optionally, when the movement occurs within the at least one SFN, including: moving from a third object within a fourth SFN to a fourth object within a fifth SFN, the second RACH resource satisfies any one of the following:

[0292] When the RS sent by the network side device includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: the RACH resource corresponding to the fourth object;

[0293] In the case where the RS sent by the network side device includes a first RS and a second RS, and the first RS has a related RACH resource, the second RACH resource is any one of the following: a RACH resource related to the RS specific to the fifth SFN, and a RACH resource corresponding to the fourth object;

[0294] In a case where the RS sent by the network side device includes only the first RS, and the first RS has related RACH resources, the second RACH resources are: RACH resources related to the RS specific to the fifth SFN;

[0295] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

[0296] Optionally, the second RACH resource is configured by any one of the following: SFN-specific SI, cell- or TRP-specific SI.

[0297] Optionally, when the first condition is met, the first operation includes: terminating the RACH process.

[0298] Optionally, the first condition satisfies at least one of the following:

[0299] The first RACH process uses a RACH resource related to the second RS;

[0300] The RACH resources configured by the second SI corresponding to different objects are different or independent;

[0301] Among them, the second RS is an RS specific to a cell or TRP; the object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, and a TRP; the second SI is an SI specific to a cell or TRP.

[0302] Optionally, the terminating the RACH process includes at least one of the following:

[0303] Stop receiving uplink messages during the RACH process;

[0304] Stop sending downlink messages during the RACH process;

[0305] Release the resources related to the RACH process;

[0306] Stop or reset the timers and counters related to the RACH process.

[0307] Optionally, when the second condition is met, the first operation includes: terminating the first RACH process and starting to execute the second RACH process.

[0308] Optionally, the second condition satisfies at least one of the following:

[0309] The first RACH process uses a RACH resource related to the second RS;

[0310] The RACH resources configured by the second SI corresponding to different objects are different or independent;

[0311] Among them, the second RS is an RS specific to a cell or TRP; the object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, and a TRP; the second SI is an SI specific to a cell or TRP.

[0312] Optionally, when the third condition is met, the first operation includes: continuing to execute the first RACH process.

[0313] Optionally, the third condition satisfies at least one of the following:

[0314] The first RACH process uses a RACH resource related to the first RS;

[0315] The RACH resource used by the first RACH process is determined by the at least one SFN coordination or by the object coordination within the SFN range;

[0316] The first RS is an RS specific to SFN.

[0317] Optionally, before performing the first operation, the method further includes:

[0318] Acquire a candidate RACH resource according to the first information;

[0319] performing the first RACH process according to the candidate RACH resource;

[0320] The first information includes at least one of the following: SI specific to a cell or TRP; SI specific to an SFN; a radio resource control RRC message; or a paging message.

[0321] Optionally, the candidate RACH resources include at least one of the following: RS-related RACH resources specific to a cell or TRP, and RS-related RACH resources specific to a SFN.

[0322] Optionally, performing the first RACH process according to the candidate RACH resource includes:

[0323] selecting a third RACH resource from the candidate RACH resources according to the second information;

[0324] performing the first RACH process according to the third RACH resource;

[0325] The second information includes at least one of the following: a preset rule, a measurement result of the RS corresponding to the cell or TRP, and a measurement result of the RS corresponding to the SFN.

[0326] Optionally, the method further includes:

[0327] When the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process, performing a second operation;

[0328] The second operation includes at least one of the following:

[0329] Send cell or TRP-specific SI;

[0330] Send SFN-specific SI;

[0331] Sending cell or TRP-specific RS;

[0332] Send SFN-specific RS.

[0333] Optionally, the method further includes:

[0334] Sending a cell or TRP-specific RS according to the third information;

[0335] The third information includes at least one of the following: a Paging message, SI corresponding to a cell or TRP, and SI corresponding to SFN.

[0336] Optionally, when the network is deployed with a high frequency range and a low frequency range, the SFN-specific cells include cells in the low frequency range, and the cells or TRP-specific cells include cells in the high frequency range; or,

[0337] When the network includes a satellite communication network, the SFN-specific cells include high-altitude platform station HAPS cells or high-orbit satellite cells, and the cells or TRP-specific cells include low-orbit satellite cells or cells covered by ground base stations.

[0338] It should be noted that this embodiment is Figure 5 The embodiments of the network side device corresponding to the method embodiments can therefore be found in Figure 5 The relevant descriptions in the method embodiment can achieve the same beneficial effects. In order to avoid repeated descriptions, they will not be repeated here.

[0339] It should be noted that the various optional implementations introduced in the embodiments of the present application can be implemented in combination with each other or can be implemented separately, and the embodiments of the present application are not limited to this.

[0340] For ease of understanding, the following examples are provided:

[0341] It should be noted that in the following examples, RS is expressed as SSB, but it should be understood that the specific expression form of RS is not limited thereby.

[0342] Case 1: The system includes SFN specific SSB and cell / TRP specific SSB. That is, the SSB received by the terminal includes SFN specific SSB and cell / TRP specific SSB, and the SSB sent by the network side device includes SFN specific SSB and cell / TRP specific SSB.

[0343] Case 1-1: SFN specific SSB has no associated RACH resources.

[0344] When initiating random access, the terminal uses the RACH resources associated with the cell / TRP specific SSB; or the terminal performs random access according to the cell / TRP specific SSB. The specific instructions are as follows:

[0345] Before initiating RACH:

[0346] 1. The terminal obtains RACH resources. Specifically, the RACH resources here are cell specific and can be obtained by at least one of the following methods:

[0347] a) obtained from cell / TRP specific SI;

[0348] b) obtained from SFN specific SI;

[0349] c) During the previous RRC release / suspend, the network sends a dedicated RRC message to the UE;

[0350] d) Obtained in the paging message.

[0351] 2. Optionally, the terminal receives cell specific SI, if any.

[0352] 3. Optionally, the terminal receives a cell-specific SSB, if any. Further, the cell-specific SSB related information is obtained by at least one of the following methods:

[0353] a) Obtained from paging message

[0354] b) Obtained from cell / TRP specific SI.

[0355] c) Obtained from SFN specific SI.

[0356] During the RACH process:

[0357] 1. Based on the cell / TRP specific SSB measurement results, select the associated RACH resources to initiate RACH, including sending preamble, receiving RAR, sending Msg.3, and receiving Msg.4.

[0358] For example, the RACH resource corresponding to the SSB with the best measurement result is selected to send the preamble or Msg.3, and Msg.2 or Msg.4 is received on the SSB with the best measurement result.

[0359] 2. If a cell change occurs within the SFN (super cell) range during the RACH process, including cell selection reselection or handover (synchronous reconfiguration), perform one of the following operations:

[0360] a) Continue the RACH process, where the RACH resources can be the RACH resources of the new cell, or continue to use the RACH resources of the source cell.

[0361] Furthermore, for a), the RACH resources of the UE need to be coordinated between network SFNs (super cells).

[0362] b) Restart the RACH process, where the RACH resources may be the RACH resources of the new cell.

[0363] c) Terminate the RACH procedure.

[0364] For 2, further, when a cell change occurs within the SFN range, it is necessary to re-receive cell / TRP-specific SI and / or SFN-specific SI.

[0365] 3. If during the RACH process, a change of SFN (super cell) or a cell change between SFNs (super cells), including cell selection reselection or handover (synchronous reconfiguration), occurs, perform one of the following operations:

[0366] a) Continue the RACH process, where the RACH resources can be the RACH resources of the new cell, or continue to use the RACH resources of the source cell.

[0367] Furthermore, for the process a), the RACH resources of the UE need to be coordinated between network SFNs (super cells).

[0368] b) Restart the RACH process, where the RACH resources may be the RACH resources of the new cell.

[0369] c) Stop / release the RACH process.

[0370] For 3, further, when a SFN (super cell) change or a cell change between SFNs (super cells) occurs, it is necessary to re-receive cell / TRP specific SI and / or SFN specific SI.

[0371] Case 1-2: SFN specific SSB has associated RACH resources.

[0372] The RACH resources associated with the SFN specific SSB are shared by all Cells / TRPs within the SFN (super cell).

[0373] When initiating random access, the terminal uses the RACH resources associated with the cell / TRP specific SSB and / or the RACH resources associated with the SFN specific SSB. The specific instructions are as follows:

[0374] Before initiating RACH:

[0375] 1. The terminal obtains RACH resources.

[0376] Specifically, the RACH resource here corresponds to a cell / TRP specific SSB and / or corresponds to an SFN specific SSB, and can be obtained by at least one of the following methods:

[0377] a) obtained from cell / TRP specific SI;

[0378] b) obtained from SFN specific SI;

[0379] c) During the previous RRC release / suspend, the network sends a dedicated RRC message to the UE;

[0380] d) Obtained in the paging message.

[0381] 2. Optionally, the terminal receives cell specific SI, if any.

[0382] 3. Optionally, the terminal receives a cell-specific SSB, if any. Further, the cell-specific SSB related information is obtained by at least one of the following methods:

[0383] a) Obtained from paging message;

[0384] b) obtained from cell / TRP specific SI;

[0385] c) Obtained from SFN specific SI.

[0386] During the RACH process:

[0387] 1. Based on preset rules, and / or cell / TRP specific SSB measurement results, and / or SFN specific SSB measurement results, select the associated RACH resources to initiate RACH, including sending preamble, receiving RAR, sending Msg.3, and receiving Msg.4.

[0388] For example, the RACH resource corresponding to the SSB with the best measurement result is selected to send the preamble or Msg.3, and Msg.2 or Msg.4 is received on the SSB with the best measurement result.

[0389] 2. If a cell change occurs within the SFN (super cell) range during the RACH process, including cell selection reselection or handover (synchronous reconfiguration), perform one of the following operations:

[0390] a) Continue the RACH process, where the RACH resources are the RACH resources corresponding to the SFN super cell, or can be the RACH resources of the new cell, or continue to use the RACH resources of the source cell.

[0391] Furthermore, the RACH process is continued only when the RACH resources corresponding to the SFN specific SSB are used.

[0392] Furthermore, for the process a), the network SFN (super cell) needs to coordinate the cell / TRP-specific RACH resources of the UE.

[0393] b) Restart the RACH process, where the RACH resources may be the RACH resources of the new cell.

[0394] Furthermore, the RACH process is restarted only when the RACH resources corresponding to the cell / TRP specific SSB are used.

[0395] c) Terminate the RACH procedure.

[0396] Furthermore, the RACH process is terminated only when the RACH resources corresponding to the cell / TRP specific SSB are used.

[0397] For 2, further, when a cell change occurs within the SFN range, it is necessary to re-receive cell / TRP-specific SI and / or SFN-specific SI.

[0398] 3. If during the RACH process, a change of SFN (super cell) or a cell change between SFNs (super cells), including cell selection reselection or handover (synchronous reconfiguration), occurs, perform one of the following operations:

[0399] a) Continue the RACH process, where the RACH resources can be the RACH resources of the new SFN super cell, or the RACH resources of the new cell, or continue to use the RACH resources of the source cell.

[0400] Furthermore, for the process a), the RACH resources of the UE need to be coordinated between the network SFN (super cells)

[0401] b) Restarting the RACH process, where the RACH resources may be the RACH resources of the new SFN super cell or the RACH resources of the new cell.

[0402] c) Terminate the RACH procedure.

[0403] For 3, further, when the SFN (super cell) is changed or the cell between SFNs (super cells) is changed, it is necessary to re-receive the SFN specific SSB, cell / TRP specific SI and / or SFN specific SI.

[0404] Case 2: All SSBs in the system are SFN SPECIFIC SSBs. That is, all SSBs received by the terminal are SFN SPECIFIC SSBs, and all SSBs sent by the network side equipment are SFN SPECIFIC SSBs.

[0405] The RACH resources corresponding to the SFN SPECIFIC SSB are shared by all Cells / TRPs within the SFN (super cell) range.

[0406] When the terminal initiates random access, it uses the RACH resources associated with the SFN specific SSB. Specifically:

[0407] Before initiating RACH:

[0408] 1. The terminal obtains RACH resources. Specifically, the RACH resources here correspond to the SFN SPECIFIC SSB and can be obtained by at least one of the following methods:

[0409] a) obtained from cell / TRP specific SI;

[0410] b) obtained from SFN specific SI;

[0411] c) During the previous RRC release / suspend, the network sends a dedicated RRC message to the UE;

[0412] d) Obtained in the paging message.

[0413] 2. Optionally, the terminal receives cell specific SI, if any.

[0414] During the RACH process:

[0415] 1. Based on preset rules and (optionally, SFN specific SSB measurement results), select RACH resources associated with SFN SPECIFICSSB to initiate RACH, including sending preamble, receiving RAR, sending Msg.3, and receiving Msg.4.

[0416] For example, the RACH resource corresponding to the SSB with the best measurement result is selected to send the preamble or Msg.3, and Msg.2 or Msg.4 is received on the SSB with the best measurement result.

[0417] 2. If a cell change occurs within the SFN (super cell) range during the RACH process, including cell selection reselection or handover (synchronous reconfiguration), perform one of the following operations:

[0418] a) Continue the RACH process, where the RACH resources are the RACH resources corresponding to the SFN super cell, which can be the RACH configured by the SFN specific SI, or the RACH resources configured by the new cell SI.

[0419] Furthermore, the RACH process is continued only when the RACH resources are configured using SFN specific SI, or when the resources configured by cell / TRP specific SI are the same.

[0420] Furthermore, for the process a), the network SFN (super cell) needs to coordinate the cell / TRP-specific RACH resources of the UE.

[0421] b) Restart the RACH process, where the RACH resources can be the RACH configured by the SFN specific SI, or the RACH resources configured by the new cell SI.

[0422] Furthermore, the RACH procedure is restarted only when the resources configured using the cell / TRP specific SI are independent or different.

[0423] c) Terminate the RACH procedure.

[0424] Furthermore, the RACH procedure is terminated only when the resources configured using the cell / TRP specific SI are independent or different.

[0425] For 2, further, when a cell change occurs within the SFN range, it is necessary to re-receive cell / TRP-specific SI and / or SFN-specific SI.

[0426] 3. If during the RACH process, a change of SFN (super cell) or a cell change between SFNs (super cells), including cell selection reselection or handover (synchronous reconfiguration), occurs, perform one of the following operations:

[0427] a) Continue the RACH process, where the RACH resources can be the RACH resources of the new SFN super cell, or the RACH resources of the new cell, or continue to use the RACH resources of the source cell.

[0428] Furthermore, for the process a), the RACH resources of the UE need to be coordinated between the network SFN (super cells)

[0429] b) Restarting the RACH process, where the RACH resources may be the RACH resources of the new SFN super cell or the RACH resources of the new cell.

[0430] c) Terminate the RACH procedure.

[0431] For 3, further, when the SFN (super cell) is changed or the cell between SFNs (super cells) is changed, it is necessary to re-receive the SFN specific SSB, cell / TRP specific SI and / or SFN specific SI.

[0432] Furthermore, before each preamble transmission, cell / TRP specific SI needs to be received.

[0433] Case 3: All SSBs in the system are cell specific SSBs. That is, all SSBs received by the terminal are cell specific SSBs, and all SSBs sent by the network side equipment are cell specific SSBs.

[0434] 1. The terminal implements cell selection and reselection based on SSB measurement;

[0435] 2. The terminal selects RACH resources for random access based on SSB measurement.

[0436] When the network is deployed with a high-frequency layer and a low-frequency layer, the cell / TRP corresponding to the low frequency layer can be regarded as an SFN or a super cell, and the cell / TRP corresponding to the high frequency layer can be regarded as a cell / TRP in the SFN / super cell.

[0437] For satellite communications (satellite or HAPS), the HAPS / satellite cell can be regarded as the SFN / super cell, and the cell / TRP corresponding to the low-orbit satellite within this range, or other ordinary cells / TRPs within this range, can be regarded as the cell / TRP within the SFN / super cell.

[0438] Through the embodiments of the present application, the power consumption of the terminal can be effectively saved; and the interruption caused by mobility during the RACH access process can be reduced.

[0439] It should be noted that the random access method provided in the embodiment of the present application may be executed by a random access device, or a control module in the random access device for executing the random access method. In the embodiment of the present application, the random access device provided in the embodiment of the present application is described by taking the random access device executing the random access method as an example.

[0440] See also Figure 7 , Figure 7 This is one of the structural diagrams of the random access device provided in the embodiment of the present application.

[0441] like Figure 7 As shown, the random access device 700 includes:

[0442] The first execution module 701 is configured to execute a first operation when the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process;

[0443] The first operation includes any one of the following:

[0444] Continue to perform the first RACH process;

[0445] terminating the first RACH process and starting to execute the second RACH process;

[0446] Abort the RACH procedure.

[0447] Optionally, the movement occurs within at least one SFN, including any one of the following:

[0448] moving from a first object to a second object within a first SFN;

[0449] Moving from the second SFN to a third SFN, and the terminal accessing the SFN layer;

[0450] moving from a third object within a fourth SFN to a fourth object within a fifth SFN;

[0451] Among them, the object includes any of the following items: a cell unique to an SFN, a cell or a transceiver point TRP unique to a cell, a TRP.

[0452] Optionally, the first execution module 701 is specifically configured to:

[0453] In a case where the reference signal RS received by the terminal includes an SFN-specific RS, a first operation is performed.

[0454] Optionally, the continuing to perform the first RACH process includes:

[0455] The first RACH process continues to be performed according to the first RACH resource.

[0456] Optionally, the movement within at least one SFN includes: in a case where the movement is from a first object to a second object within a first SFN, the first RACH resource satisfies any one of the following:

[0457] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource corresponding to the second object, and a RACH resource corresponding to the first object;

[0458] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to an RS specific to the first SFN, a RACH resource corresponding to the second object, and a RACH resource corresponding to the first object;

[0459] In a case where the RS received by the terminal includes only the first RS, and the first RS has a related RACH resource, the first RACH resource is: a RACH resource related to an RS specific to the first SFN;

[0460] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, a TRP; the first RS is an RS specific to an SFN; or the second RS is an RS specific to a cell or TRP.

[0461] Optionally, when the movement occurs within the at least one SFN, including: moving from the second SFN to the third SFN, and the terminal accesses the SFN layer, the first RACH resource satisfies any one of the following:

[0462] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource configured by target system information SI in the second SFN, and a RACH resource configured by target SI in the third SFN;

[0463] In a case where the RS received by the terminal includes a first RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to the RS specific to the second SFN, and a RACH resource related to the RS specific to the third SFN;

[0464] The first RS is an RS specific to the SFN, or the second RS is an RS specific to the cell or TRP; the target SI is: SI specific to the SFN, or SI specific to the cell or TRP.

[0465] Optionally, when the movement occurs within the at least one SFN, including: moving from a third object within a fourth SFN to a fourth object within a fifth SFN, the first RACH resource satisfies any one of the following:

[0466] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource corresponding to the third object, and a RACH resource corresponding to the fourth object;

[0467] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to an RS specific to the fourth SFN, a RACH resource related to an RS specific to the fifth SFN, a RACH resource corresponding to the third object, and a RACH resource corresponding to the fourth object;

[0468] In a case where the RS received by the terminal includes only the first RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to the RS specific to the fourth SFN, and a RACH resource related to the RS specific to the fifth SFN;

[0469] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

[0470] Optionally, the first RACH resource is configured by any one of the following: SFN-specific SI, cell- or TRP-specific SI.

[0471] Optionally, the starting to execute the second RACH process includes:

[0472] A second RACH procedure begins to be executed according to the second RACH resource.

[0473] Optionally, the movement within at least one SFN includes: in a case where the movement occurs from a first object to a second object within a first SFN, the second RACH resource satisfies any one of the following:

[0474] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: a RACH resource corresponding to the second object;

[0475] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has a related RACH resource, the second RACH resource is any one of the following: a RACH resource related to an RS specific to the first SFN, and a RACH resource corresponding to the second object;

[0476] In a case where the RS received by the terminal includes only the first RS, and the first RS has related RACH resources, the second RACH resources are: RACH resources related to the RS specific to the first SFN;

[0477] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

[0478] Optionally, when the movement occurs within the at least one SFN, including: moving from the second SFN to the third SFN, and the terminal accesses the SFN layer, the second RACH resource satisfies any one of the following:

[0479] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: a RACH resource configured by a target SI in the third SFN;

[0480] In a case where the RS received by the terminal includes a first RS, and the first RS has a related RACH resource, the second RACH resource is: a RACH resource related to an RS specific to the third SFN;

[0481] The first RS is an RS specific to the SFN, or the second RS is an RS specific to the cell or TRP; the target SI is: SI specific to the SFN, or SI specific to the cell or TRP.

[0482] Optionally, when the movement occurs within the at least one SFN, including: moving from a third object within a fourth SFN to a fourth object within a fifth SFN, the second RACH resource satisfies any one of the following:

[0483] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: a RACH resource corresponding to the fourth object;

[0484] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has a related RACH resource, the second RACH resource is any one of the following: a RACH resource related to an RS specific to the fifth SFN, and a RACH resource corresponding to the fourth object;

[0485] In a case where the RS received by the terminal includes only the first RS, and the first RS has related RACH resources, the second RACH resources are: RACH resources related to the RS specific to the fifth SFN;

[0486] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

[0487] Optionally, the second RACH resource is configured by any one of the following: SFN-specific SI, cell- or TRP-specific SI.

[0488] Optionally, when the first condition is met, the first operation includes: terminating the RACH process.

[0489] Optionally, the first condition satisfies at least one of the following:

[0490] The first RACH process uses a RACH resource related to the second RS;

[0491] The RACH resources configured by the second SI corresponding to different objects are different or independent;

[0492] Among them, the second RS is an RS specific to a cell or TRP; the object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, and a TRP; the second SI is an SI specific to a cell or TRP.

[0493] Optionally, the terminating the RACH process includes at least one of the following:

[0494] Stop sending uplink messages during the RACH process;

[0495] Stop receiving downlink messages during the RACH process;

[0496] Release the resources related to the RACH process;

[0497] Stop or reset the timers and counters related to the RACH process.

[0498] Optionally, when the second condition is met, the first operation includes: terminating the first RACH process and starting to execute the second RACH process.

[0499] Optionally, the second condition satisfies at least one of the following:

[0500] The first RACH process uses a RACH resource related to the second RS;

[0501] The RACH resources configured by the second SI corresponding to different objects are different or independent;

[0502] Among them, the second RS is an RS specific to a cell or TRP; the object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, and a TRP; the second SI is an SI specific to a cell or TRP.

[0503] Optionally, when the third condition is met, the first operation includes: continuing to execute the first RACH process.

[0504] Optionally, the third condition satisfies at least one of the following:

[0505] The first RACH process uses a RACH resource related to the first RS;

[0506] The RACH resource used by the first RACH process is determined by the at least one SFN coordination or by the object coordination within the SFN range;

[0507] The first RS is an RS specific to SFN.

[0508] Optionally, the random access device 700 further includes:

[0509] A first acquisition module, configured to acquire a candidate RACH resource according to the first information;

[0510] A second execution module, configured to execute the first RACH process according to the candidate RACH resource;

[0511] The first information includes at least one of the following: SI specific to a cell or TRP; SI specific to an SFN; a radio resource control RRC message; or a paging message.

[0512] Optionally, the candidate RACH resources include at least one of the following: RS-related RACH resources specific to a cell or TRP, and RS-related RACH resources specific to a SFN.

[0513] Optionally, the second execution module includes:

[0514] A first selection unit, configured to select a third RACH resource from the candidate RACH resources according to the second information;

[0515] A first execution unit, configured to execute the first RACH process according to the third RACH resource;

[0516] The second information includes at least one of the following: a preset rule, a measurement result of the RS corresponding to the cell or TRP, and a measurement result of the RS corresponding to the SFN.

[0517] Optionally, the random access device 700 further includes:

[0518] A third execution module, configured to execute a second operation when the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process;

[0519] The second operation includes at least one of the following:

[0520] Receive SI specific to the cell or TRP;

[0521] Receive SFN-specific SI;

[0522] Receive RS specific to the cell or TRP;

[0523] Receive SFN-specific RS.

[0524] Optionally, the random access device 700 further includes:

[0525] A receiving module, configured to receive a RS specific to a cell or TRP according to the third information;

[0526] The third information includes at least one of the following: a Paging message, SI corresponding to a cell or TRP, and SI corresponding to SFN.

[0527] Optionally, when the network is deployed with a high frequency range and a low frequency range, the SFN-specific cells include cells in the low frequency range, and the cells or TRP-specific cells include cells in the high frequency range; or,

[0528] When the network includes a satellite communication network, the SFN-specific cells include high-altitude platform station HAPS cells or high-orbit satellite cells, and the cells or TRP-specific cells include low-orbit satellite cells or cells covered by ground base stations.

[0529] The random access device in the embodiment of the present application may be a device, or a component in a terminal, a circuit, or a chip. The device may be a mobile terminal or a non-mobile terminal. For example, the mobile terminal may include but is not limited to the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television (television, TV), a teller machine or a self-service machine, etc., which is not specifically limited in the embodiment of the present application.

[0530] The random access device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0531] The random access device 700 provided in the embodiment of the present application can achieve Figure 5 The various processes implemented in the method embodiment achieve the same technical effect and will not be described again here to avoid repetition.

[0532] It should be noted that the random access method provided in the embodiment of the present application may be executed by a random access device, or a control module in the random access device for executing the random access method. In the embodiment of the present application, the random access device provided in the embodiment of the present application is described by taking the random access device executing the random access method as an example.

[0533] See also Figure 8 , Figure 8 This is the second structural diagram of the random access device provided in the embodiment of the present application.

[0534] like Figure 8 As shown, the random access device 800 includes:

[0535] The fourth execution module 801 is configured to execute a first operation when the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process;

[0536] The first operation includes any one of the following:

[0537] Continue to perform the first RACH process;

[0538] terminating the first RACH process and starting to execute the second RACH process;

[0539] Abort the RACH procedure.

[0540] Optionally, the movement occurs within at least one SFN, including any one of the following:

[0541] moving from a first object to a second object within a first SFN;

[0542] Moving from the second SFN to a third SFN, and the terminal accessing the SFN layer;

[0543] moving from a third object within a fourth SFN to a fourth object within a fifth SFN;

[0544] Among them, the object includes any of the following items: a cell unique to an SFN, a cell or a transceiver point TRP unique to a cell, a TRP.

[0545] Optionally, the fourth execution module 801 is specifically configured to:

[0546] In a case where the reference signal RS sent by the network side device includes an RS specific to the SFN, a first operation is performed.

[0547] Optionally, the continuing to perform the first RACH process includes:

[0548] The first RACH process continues to be performed according to the first RACH resource.

[0549] Optionally, the movement within at least one SFN includes: in a case where the movement is from a first object to a second object within a first SFN, the first RACH resource satisfies any one of the following:

[0550] When the RS sent by the network side device includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource corresponding to the second object, and a RACH resource corresponding to the first object;

[0551] In a case where the RS sent by the network side device includes a first RS and a second RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to an RS specific to the first SFN, a RACH resource corresponding to the second object, and a RACH resource corresponding to the first object;

[0552] In a case where the RS sent by the network side device includes only the first RS, and the first RS has related RACH resources, the first RACH resources are: RACH resources related to the RS specific to the first SFN;

[0553] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, a TRP; the first RS is an RS specific to an SFN; or the second RS is an RS specific to a cell or TRP.

[0554] Optionally, when the movement occurs within the at least one SFN, including: moving from the second SFN to the third SFN, and the terminal accesses the SFN layer, the first RACH resource satisfies any one of the following:

[0555] When the RS sent by the network side device includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource configured by the target system information SI in the second SFN, and a RACH resource configured by the target SI in the third SFN;

[0556] In a case where the RS sent by the network side device includes a first RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to the RS specific to the second SFN, and a RACH resource related to the RS specific to the third SFN;

[0557] The first RS is an RS specific to the SFN, or the second RS is an RS specific to the cell or TRP; the target SI is: SI specific to the SFN, or SI specific to the cell or TRP.

[0558] Optionally, in a case where the movement occurs within the at least one SFN, including: moving from a third object within a fourth SFN to a fourth object within a fifth SFN, the first RACH resource satisfies any one of the following:

[0559] When the RS sent by the network side device includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource corresponding to the third object, and a RACH resource corresponding to the fourth object;

[0560] In a case where the RS sent by the network side device includes a first RS and a second RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to an RS specific to the fourth SFN, a RACH resource related to an RS specific to the fifth SFN, a RACH resource corresponding to the third object, and a RACH resource corresponding to the fourth object;

[0561] In a case where the RS sent by the network side device includes only the first RS, and the first RS has related RACH resources, the first RACH resources are any one of the following: a RACH resource related to the RS specific to the fourth SFN, and a RACH resource related to the RS specific to the fifth SFN;

[0562] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

[0563] Optionally, the first RACH resource is configured by any one of the following: SFN-specific SI, cell- or TRP-specific SI.

[0564] Optionally, the starting to execute the second RACH process includes:

[0565] A second RACH procedure begins to be executed according to the second RACH resource.

[0566] Optionally, the movement within at least one SFN includes: in a case where the movement occurs from a first object to a second object within a first SFN, the second RACH resource satisfies any one of the following:

[0567] When the RS sent by the network side device includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: a RACH resource corresponding to the second object;

[0568] In a case where the RS sent by the network side device includes a first RS and a second RS, and the first RS has a related RACH resource, the second RACH resource is any one of the following: a RACH resource related to an RS specific to the first SFN, and a RACH resource corresponding to the second object;

[0569] In a case where the RS sent by the network side device includes only the first RS, and the first RS has related RACH resources, the second RACH resources are: RACH resources related to the RS specific to the first SFN;

[0570] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

[0571] Optionally, when the movement occurs within the at least one SFN, including: moving from the second SFN to the third SFN, and the terminal accesses the SFN layer, the second RACH resource satisfies any one of the following:

[0572] When the RS sent by the network side device includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: a RACH resource configured by the target SI in the third SFN;

[0573] In a case where the RS sent by the network side device includes a first RS, and the first RS has a related RACH resource, the second RACH resource is: a RACH resource related to an RS specific to the third SFN;

[0574] The first RS is an RS specific to the SFN, or the second RS is an RS specific to the cell or TRP; the target SI is: SI specific to the SFN, or SI specific to the cell or TRP.

[0575] Optionally, when the movement occurs within the at least one SFN, including: moving from a third object within a fourth SFN to a fourth object within a fifth SFN, the second RACH resource satisfies any one of the following:

[0576] When the RS sent by the network side device includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: the RACH resource corresponding to the fourth object;

[0577] In the case where the RS sent by the network side device includes a first RS and a second RS, and the first RS has a related RACH resource, the second RACH resource is any one of the following: a RACH resource related to the RS specific to the fifth SFN, and a RACH resource corresponding to the fourth object;

[0578] In a case where the RS sent by the network side device includes only the first RS, and the first RS has related RACH resources, the second RACH resources are: RACH resources related to the RS specific to the fifth SFN;

[0579] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

[0580] Optionally, the second RACH resource is configured by any one of the following: SFN-specific SI, cell- or TRP-specific SI.

[0581] Optionally, when the first condition is met, the first operation includes: terminating the RACH process.

[0582] Optionally, the first condition satisfies at least one of the following:

[0583] The first RACH process uses a RACH resource related to the second RS;

[0584] The RACH resources configured by the second SI corresponding to different objects are different or independent;

[0585] Among them, the second RS is an RS specific to a cell or TRP; the object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, and a TRP; the second SI is an SI specific to a cell or TRP.

[0586] Optionally, the terminating the RACH process includes at least one of the following:

[0587] Stop receiving uplink messages during the RACH process;

[0588] Stop sending downlink messages during the RACH process;

[0589] Release the resources related to the RACH process;

[0590] Stop or reset the timers and counters related to the RACH process.

[0591] Optionally, when the second condition is met, the first operation includes: terminating the first RACH process and starting to execute the second RACH process.

[0592] Optionally, the second condition satisfies at least one of the following:

[0593] The first RACH process uses a RACH resource related to the second RS;

[0594] The RACH resources configured by the second SI corresponding to different objects are different or independent;

[0595] Among them, the second RS is an RS specific to a cell or TRP; the object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, and a TRP; the second SI is an SI specific to a cell or TRP.

[0596] Optionally, when the third condition is met, the first operation includes: continuing to execute the first RACH process.

[0597] Optionally, the third condition satisfies at least one of the following:

[0598] The first RACH process uses a RACH resource related to the first RS;

[0599] The RACH resource used by the first RACH process is determined by the at least one SFN coordination or by the object coordination within the SFN range;

[0600] The first RS is an RS specific to SFN.

[0601] Optionally, the random access device 800 further includes:

[0602] A second acquisition module, configured to acquire a candidate RACH resource according to the first information;

[0603] a fifth execution module, configured to execute the first RACH process according to the candidate RACH resource;

[0604] The first information includes at least one of the following: SI specific to a cell or TRP; SI specific to an SFN; a radio resource control RRC message; or a paging message.

[0605] Optionally, the candidate RACH resources include at least one of the following: RS-related RACH resources specific to a cell or TRP, and RS-related RACH resources specific to a SFN.

[0606] Optionally, the fifth execution module includes:

[0607] A second selection unit, configured to select a third RACH resource from the candidate RACH resources according to the second information;

[0608] A second execution unit, configured to execute the first RACH process according to the third RACH resource;

[0609] The second information includes at least one of the following: a preset rule, a measurement result of the RS corresponding to the cell or TRP, and a measurement result of the RS corresponding to the SFN.

[0610] Optionally, the random access device 800 further includes:

[0611] A sixth execution module, configured to execute a second operation when the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process;

[0612] The second operation includes at least one of the following:

[0613] Send cell or TRP-specific SI;

[0614] Send SFN-specific SI;

[0615] Sending cell or TRP-specific RS;

[0616] Send SFN-specific RS.

[0617] Optionally, the random access device 800 further includes:

[0618] A sending module, configured to send a cell- or TRP-specific RS according to the third information;

[0619] The third information includes at least one of the following: a Paging message, SI corresponding to a cell or TRP, and SI corresponding to SFN.

[0620] Optionally, when the network is deployed with a high frequency range and a low frequency range, the SFN-specific cells include cells in the low frequency range, and the cells or TRP-specific cells include cells in the high frequency range; or,

[0621] When the network includes a satellite communication network, the SFN-specific cells include high-altitude platform station HAPS cells or high-orbit satellite cells, and the cells or TRP-specific cells include low-orbit satellite cells or cells covered by ground base stations.

[0622] The random access device in the embodiment of the present application may be a device, or a component, integrated circuit, or chip in a network side device. The network side device may include but is not limited to the types of network side devices 12 listed above, and the embodiment of the present application does not specifically limit it.

[0623] The random access device 800 provided in the embodiment of the present application can realize Figure 6 The various processes implemented in the method embodiment achieve the same technical effect and will not be described again here to avoid repetition.

[0624] Optional, such as Fig. 9 As shown, the embodiment of the present application further provides a communication device 900, including a processor 901, a memory 902, and a program or instruction stored in the memory 902 and executable on the processor 901. For example, when the communication device 900 is a terminal, the program or instruction is executed by the processor 901 to implement the above Figure 5 When the communication device 900 is a network side device, the program or instruction is executed by the processor 901 to implement the above Figure 6 The various processes of the method embodiments can achieve the same technical effect, and will not be described again here to avoid repetition.

[0625] Fig.10 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0626] The terminal 1000 includes but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, and a processor 1010 and other components.

[0627] Those skilled in the art will appreciate that the terminal 1000 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 1010 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Fig.10 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0628] It should be understood that in the embodiment of the present application, the input unit 1004 may include a graphics processor (Graphics Processing Unit, GPU) 10041 and a microphone 10042, and the graphics processor 10041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1007 includes a touch panel 10071 and other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include two parts: a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0629] In the embodiment of the present application, the radio frequency unit 1001 receives downlink data from the network side device and sends it to the processor 1010 for processing; in addition, the uplink data is sent to the network side device. Generally, the radio frequency unit 1001 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0630] The memory 1009 can be used to store software programs or instructions and various data. The memory 1009 can mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area can 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.), etc. In addition, the memory 1009 can include a high-speed random access memory, and can also include a non-volatile memory, wherein the non-volatile memory can be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or a flash memory. For example, at least one disk storage device, a flash memory device, or other non-volatile solid-state storage devices.

[0631] The processor 1010 may include one or more processing units; optionally, the processor 1010 may be integrated into an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, and application programs or instructions, etc., and the modem processor mainly processes wireless communications, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1010.

[0632] The processor 1010 is configured to:

[0633] When the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process, performing a first operation;

[0634] The first operation includes any one of the following:

[0635] Continue to perform the first RACH process;

[0636] terminating the first RACH process and starting to execute the second RACH process;

[0637] Abort the RACH procedure.

[0638] Optionally, the movement occurs within at least one SFN, including any one of the following:

[0639] moving from a first object to a second object within a first SFN;

[0640] Moving from the second SFN to a third SFN, and the terminal accessing the SFN layer;

[0641] moving from a third object within a fourth SFN to a fourth object within a fifth SFN;

[0642] Among them, the object includes any of the following items: a cell unique to an SFN, a cell or a transceiver point TRP unique to a cell, a TRP.

[0643] Optionally, the processor 1010 is specifically configured to:

[0644] In a case where the reference signal RS received by the terminal includes an SFN-specific RS, a first operation is performed.

[0645] Optionally, the continuing to perform the first RACH process includes:

[0646] The first RACH process continues to be performed according to the first RACH resource.

[0647] Optionally, the movement within at least one SFN includes: in a case where the movement is from a first object to a second object within a first SFN, the first RACH resource satisfies any one of the following:

[0648] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource corresponding to the second object, and a RACH resource corresponding to the first object;

[0649] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to an RS specific to the first SFN, a RACH resource corresponding to the second object, and a RACH resource corresponding to the first object;

[0650] In a case where the RS received by the terminal includes only the first RS, and the first RS has a related RACH resource, the first RACH resource is: a RACH resource related to an RS specific to the first SFN;

[0651] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, a TRP; the first RS is an RS specific to an SFN; or the second RS is an RS specific to a cell or TRP.

[0652] Optionally, when the movement occurs within the at least one SFN, including: moving from the second SFN to the third SFN, and the terminal accesses the SFN layer, the first RACH resource satisfies any one of the following:

[0653] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource configured by target system information SI in the second SFN, and a RACH resource configured by target SI in the third SFN;

[0654] In a case where the RS received by the terminal includes a first RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to the RS specific to the second SFN, and a RACH resource related to the RS specific to the third SFN;

[0655] The first RS is an RS specific to the SFN, or the second RS is an RS specific to the cell or TRP; the target SI is: SI specific to the SFN, or SI specific to the cell or TRP.

[0656] Optionally, when the movement occurs within the at least one SFN, including: moving from a third object within a fourth SFN to a fourth object within a fifth SFN, the first RACH resource satisfies any one of the following:

[0657] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource corresponding to the third object, and a RACH resource corresponding to the fourth object;

[0658] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to an RS specific to the fourth SFN, a RACH resource related to an RS specific to the fifth SFN, a RACH resource corresponding to the third object, and a RACH resource corresponding to the fourth object;

[0659] In a case where the RS received by the terminal includes only the first RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to the RS specific to the fourth SFN, and a RACH resource related to the RS specific to the fifth SFN;

[0660] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

[0661] Optionally, the first RACH resource is configured by any one of the following: SFN-specific SI, cell- or TRP-specific SI.

[0662] Optionally, the starting to execute the second RACH process includes:

[0663] A second RACH procedure begins to be executed according to the second RACH resource.

[0664] Optionally, the movement within at least one SFN includes: in a case where the movement occurs from a first object to a second object within a first SFN, the second RACH resource satisfies any one of the following:

[0665] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: a RACH resource corresponding to the second object;

[0666] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has a related RACH resource, the second RACH resource is any one of the following: a RACH resource related to an RS specific to the first SFN, and a RACH resource corresponding to the second object;

[0667] In a case where the RS received by the terminal includes only the first RS, and the first RS has related RACH resources, the second RACH resources are: RACH resources related to the RS specific to the first SFN;

[0668] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

[0669] Optionally, when the movement occurs within the at least one SFN, including: moving from the second SFN to the third SFN, and the terminal accesses the SFN layer, the second RACH resource satisfies any one of the following:

[0670] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: a RACH resource configured by a target SI in the third SFN;

[0671] In a case where the RS received by the terminal includes a first RS, and the first RS has a related RACH resource, the second RACH resource is: a RACH resource related to an RS specific to the third SFN;

[0672] The first RS is an RS specific to the SFN, or the second RS is an RS specific to the cell or TRP; the target SI is: SI specific to the SFN, or SI specific to the cell or TRP.

[0673] Optionally, when the movement occurs within the at least one SFN, including: moving from a third object within a fourth SFN to a fourth object within a fifth SFN, the second RACH resource satisfies any one of the following:

[0674] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: a RACH resource corresponding to the fourth object;

[0675] In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has a related RACH resource, the second RACH resource is any one of the following: a RACH resource related to an RS specific to the fifth SFN, and a RACH resource corresponding to the fourth object;

[0676] In a case where the RS received by the terminal includes only the first RS, and the first RS has related RACH resources, the second RACH resources are: RACH resources related to the RS specific to the fifth SFN;

[0677] The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

[0678] Optionally, the second RACH resource is configured by any one of the following: SFN-specific SI, cell- or TRP-specific SI.

[0679] Optionally, when the first condition is met, the first operation includes: terminating the RACH process.

[0680] Optionally, the first condition satisfies at least one of the following:

[0681] The first RACH process uses a RACH resource related to the second RS;

[0682] The RACH resources configured by the second SI corresponding to different objects are different or independent;

[0683] Among them, the second RS is an RS specific to a cell or TRP; the object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, and a TRP; the second SI is an SI specific to a cell or TRP.

[0684] Optionally, the terminating the RACH process includes at least one of the following:

[0685] Stop sending uplink messages during the RACH process;

[0686] Stop receiving downlink messages during the RACH process;

[0687] Release the resources related to the RACH process;

[0688] Stop or reset the timers and counters related to the RACH process.

[0689] Optionally, when the second condition is met, the first operation includes: terminating the first RACH process and starting to execute the second RACH process.

[0690] Optionally, the second condition satisfies at least one of the following:

[0691] The first RACH process uses a RACH resource related to the second RS;

[0692] The RACH resources configured by the second SI corresponding to different objects are different or independent;

[0693] Among them, the second RS is an RS specific to a cell or TRP; the object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, and a TRP; the second SI is an SI specific to a cell or TRP.

[0694] Optionally, when the third condition is met, the first operation includes: continuing to execute the first RACH process.

[0695] Optionally, the third condition satisfies at least one of the following:

[0696] The first RACH process uses a RACH resource related to the first RS;

[0697] The RACH resource used by the first RACH process is determined by the at least one SFN coordination or by the object coordination within the SFN range;

[0698] The first RS is an RS specific to SFN.

[0699] Optionally, the processor 1010 is configured to:

[0700] Acquire a candidate RACH resource according to the first information;

[0701] performing the first RACH process according to the candidate RACH resource;

[0702] The first information includes at least one of the following: SI specific to a cell or TRP; SI specific to an SFN; a radio resource control RRC message; or a paging message.

[0703] Optionally, the candidate RACH resources include at least one of the following: RS-related RACH resources specific to a cell or TRP, and RS-related RACH resources specific to a SFN.

[0704] Optionally, the processor 1010 is configured to:

[0705] selecting a third RACH resource from the candidate RACH resources according to the second information;

[0706] performing the first RACH process according to the third RACH resource;

[0707] The second information includes at least one of the following: a preset rule, a measurement result of the RS corresponding to the cell or TRP, and a measurement result of the RS corresponding to the SFN.

[0708] Optionally, the radio frequency unit 1001 is configured to:

[0709] When the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process, performing a second operation;

[0710] The second operation includes at least one of the following:

[0711] Receive SI specific to the cell or TRP;

[0712] Receive SFN-specific SI;

[0713] Receive RS specific to the cell or TRP;

[0714] Receive SFN-specific RS.

[0715] Optionally, the radio frequency unit 1001 is configured to:

[0716] receiving a RS specific to a cell or TRP according to the third information;

[0717] The third information includes at least one of the following: a Paging message, SI corresponding to a cell or TRP, and SI corresponding to SFN.

[0718] Optionally, when the network is deployed with a high frequency range and a low frequency range, the SFN-specific cells include cells in the low frequency range, and the cells or TRP-specific cells include cells in the high frequency range; or,

[0719] When the network includes a satellite communication network, the SFN-specific cells include high-altitude platform station HAPS cells or high-orbit satellite cells, and the cells or TRP-specific cells include low-orbit satellite cells or cells covered by ground base stations.

[0720] It should be noted that the terminal 1000 in this embodiment can implement the embodiment of the present invention. Figure 5 Each process in the method embodiment achieves the same beneficial effect, and will not be described again here to avoid repetition.

[0721] Specifically, the embodiment of the present application also provides a network side device. Fig.11 As shown, the network device 1100 includes: an antenna 111, a radio frequency device 112, and a baseband device 113. The antenna 111 is connected to the radio frequency device 112. In the uplink direction, the radio frequency device 112 receives information through the antenna 111 and sends the received information to the baseband device 113 for processing. In the downlink direction, the baseband device 113 processes the information to be sent and sends it to the radio frequency device 112, and the radio frequency device 112 processes the received information and sends it out through the antenna 111.

[0722] The frequency band processing device may be located in the baseband device 113 . The method performed by the network-side device in the above embodiment may be implemented in the baseband device 113 . The baseband device 113 includes a processor 114 and a memory 115 .

[0723] The baseband device 113 may include, for example, at least one baseband board on which a plurality of chips are arranged. Fig.11 As shown, one of the chips is, for example, a processor 114, which is connected to a memory 115 to call a program in the memory 115 to execute the network device operations shown in the above method embodiment.

[0724] The baseband device 113 may further include a network interface 116 for exchanging information with the radio frequency device 112 . The interface may be, for example, a common public radio interface (CPRI).

[0725] Specifically, the network side device of the embodiment of the present invention further includes: instructions or programs stored in the memory 115 and executable on the processor 114, and the processor 114 calls the instructions or programs in the memory 115 to execute Figure 6 Each process in the method embodiment achieves the same technical effect and will not be described here to avoid repetition.

[0726] The embodiment of the present invention further provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, each process of the above-mentioned random access method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. The readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0727] The embodiment of the present application also provides a readable storage medium on which a program or instruction is stored. When the program or instruction is executed by a processor, the above Figure 5 or Figure 6 The various processes of the method embodiments can achieve the same technical effect, and will not be described again here to avoid repetition.

[0728] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a readable storage medium, such as a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0729] The present application also provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a network side device program or instruction to implement the above Figure 5 or Figure 6 The various processes of the method embodiments can achieve the same technical effect, and will not be described again here to avoid repetition.

[0730] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0731] It should be noted that, in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes one..." does not exclude that the RS received by the terminal in the process, method, article or device including the element also includes other identical elements. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0732] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0733] The above-mentioned drawings are used to describe the embodiments of the present application, but the present application is not limited to the above-mentioned specific implementation modes. The above-mentioned specific implementation modes are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A random access method, performed by a terminal, characterized in that: The method comprises: When the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process, performing a first operation; The first operation includes any one of the following: Continue to perform the first RACH process; terminating the first RACH process and starting to execute the second RACH process; Abort the RACH process; The movement occurs within at least one SFN, including any of the following: moving from a first object to a second object within a first SFN; Moving from the second SFN to a third SFN, and the terminal accessing the SFN layer; moving from a third object within a fourth SFN to a fourth object within a fifth SFN; Among them, the object includes any of the following items: a cell unique to an SFN, a cell or a transceiver point TRP unique to a cell, a TRP.

2. The method according to claim 1, characterized in that The performing of the first operation includes: In a case where the reference signal RS received by the terminal includes an SFN-specific RS, a first operation is performed.

3. The method according to claim 1, characterized in that The continuing to perform the first RACH process includes: The first RACH process continues to be performed according to the first RACH resource.

4. The method according to claim 3, characterized in that The movement within at least one SFN includes: in a case where the movement occurs from a first object to a second object within a first SFN, the first RACH resource satisfies any one of the following: In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource corresponding to the second object, and a RACH resource corresponding to the first object; In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to an RS specific to the first SFN, a RACH resource corresponding to the second object, and a RACH resource corresponding to the first object; In a case where the RS received by the terminal includes only the first RS, and the first RS has a related RACH resource, the first RACH resource is: a RACH resource related to an RS specific to the first SFN; The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, a TRP; the first RS is an RS specific to an SFN; or the second RS is an RS specific to a cell or TRP.

5. The method according to claim 3, characterized in that: In the case where the movement occurs within the at least one SFN, including: moving from the second SFN to the third SFN, and the terminal accesses the SFN layer, the first RACH resource satisfies any one of the following items: In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource configured by target system information SI in the second SFN, and a RACH resource configured by target SI in the third SFN; In a case where the RS received by the terminal includes a first RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to the RS specific to the second SFN, and a RACH resource related to the RS specific to the third SFN; The first RS is an RS specific to the SFN, or the second RS is an RS specific to the cell or TRP; the target SI is: SI specific to the SFN, or SI specific to the cell or TRP.

6. The method according to claim 3, characterized in that In the case where the movement occurs within the at least one SFN, including: moving from a third object within a fourth SFN to a fourth object within a fifth SFN, the first RACH resource satisfies any of the following: In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource corresponding to the third object, and a RACH resource corresponding to the fourth object; In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to an RS specific to the fourth SFN, a RACH resource related to an RS specific to the fifth SFN, a RACH resource corresponding to the third object, and a RACH resource corresponding to the fourth object; In a case where the RS received by the terminal includes only the first RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to the RS specific to the fourth SFN, and a RACH resource related to the RS specific to the fifth SFN; The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

7. The method according to any one of claims 3 to 6, characterized in that The first RACH resource is configured by any one of the following: SFN-specific SI, cell- or TRP-specific SI.

8. The method according to claim 1, characterized in that: The starting to execute the second RACH process includes: A second RACH procedure begins to be executed according to the second RACH resource.

9. The method according to claim 8, characterized in that The movement within at least one SFN includes: in a case where the movement occurs from a first object to a second object within a first SFN, the second RACH resource satisfies any one of the following: In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: a RACH resource corresponding to the second object; In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has a related RACH resource, the second RACH resource is any one of the following: a RACH resource related to an RS specific to the first SFN, and a RACH resource corresponding to the second object; In a case where the RS received by the terminal includes only the first RS, and the first RS has related RACH resources, the second RACH resources are: RACH resources related to the RS specific to the first SFN; The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

10. The method according to claim 8, characterized in that In the case where the movement occurs within the at least one SFN, including: moving from the second SFN to the third SFN, and the terminal accesses the SFN layer, the second RACH resource satisfies any one of the following: In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: a RACH resource configured by a target SI in the third SFN; In a case where the RS received by the terminal includes a first RS, and the first RS has a related RACH resource, the second RACH resource is: a RACH resource related to an RS specific to the third SFN; The first RS is an RS specific to the SFN, or the second RS is an RS specific to the cell or TRP; the target SI is: SI specific to the SFN, or SI specific to the cell or TRP.

11. The method according to claim 8, characterized in that In the case where the movement occurs within the at least one SFN, including: moving from a third object within a fourth SFN to a fourth object within a fifth SFN, the second RACH resource satisfies any one of the following: In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: a RACH resource corresponding to the fourth object; In a case where the RS received by the terminal includes a first RS and a second RS, and the first RS has a related RACH resource, the second RACH resource is any one of the following: a RACH resource related to an RS specific to the fifth SFN, and a RACH resource corresponding to the fourth object; In a case where the RS received by the terminal includes only the first RS, and the first RS has related RACH resources, the second RACH resources are: RACH resources related to the RS specific to the fifth SFN; The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

12. The method according to any one of claims 8 to 11, characterized in that The second RACH resource is configured by any one of the following: SFN-specific SI, cell- or TRP-specific SI.

13. The method according to claim 1, characterized in that When the first condition is met, the first operation includes: terminating the RACH process.

14. The method according to claim 13, characterized in that The first condition includes at least one of the following: The first RACH process uses a RACH resource related to the second RS; The RACH resources configured by the second SI corresponding to different objects are different or independent; Among them, the second RS is an RS specific to a cell or TRP; the object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, and a TRP; the second SI is an SI specific to a cell or TRP.

15. The method according to claim 1, characterized in that The terminating the RACH process includes at least one of the following: Stop sending uplink messages during the RACH process; Stop receiving downlink messages during the RACH process; Release the resources related to the RACH process; Stop or reset the timers and counters related to the RACH process.

16. The method according to claim 1, characterized in that When the second condition is met, the first operation includes: terminating the first RACH process and starting to execute the second RACH process.

17. The method according to claim 16, characterized in that The second condition satisfies at least one of the following: The first RACH process uses a RACH resource related to the second RS; The RACH resources configured by the second SI corresponding to different objects are different or independent; Among them, the second RS is an RS specific to a cell or TRP; the object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, and a TRP; the second SI is an SI specific to a cell or TRP.

18. The method according to claim 1, characterized in that When the third condition is met, the first operation includes: continuing to execute the first RACH process.

19. The method according to claim 18, characterized in that The third condition satisfies at least one of the following: The first RACH process uses a RACH resource related to the first RS; The RACH resource used by the first RACH process is determined by the at least one SFN coordination or by the object coordination within the SFN range; The first RS is an RS specific to SFN.

20. The method according to claim 1, characterized in that Before performing the first operation, the method further includes: Acquire a candidate RACH resource according to the first information; performing the first RACH process according to the candidate RACH resource; The first information includes at least one of the following: SI specific to a cell or TRP; SI specific to an SFN; a radio resource control RRC message; or a paging message.

21. The method according to claim 20, characterized in that The candidate RACH resources include at least one of the following: RS-related RACH resources specific to a cell or TRP, and RS-related RACH resources specific to a SFN.

22. The method according to claim 20, characterized in that The performing the first RACH process according to the candidate RACH resource includes: selecting a third RACH resource from the candidate RACH resources according to the second information; performing the first RACH process according to the third RACH resource; The second information includes at least one of the following: a preset rule, a measurement result of the RS corresponding to the cell or TRP, and a measurement result of the RS corresponding to the SFN.

23. The method according to claim 1, characterized in that The method further comprises: When the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process, performing a second operation; The second operation includes at least one of the following: Receive SI specific to the cell or TRP; Receive SFN-specific SI; Receive RS specific to the cell or TRP; Receive SFN-specific RS.

24. The method according to claim 1, characterized in that The method further comprises: receiving a RS specific to a cell or TRP according to the third information; The third information includes at least one of the following: a Paging message, SI corresponding to a cell or TRP, and SI corresponding to SFN.

25. The method according to claim 1, characterized in that When the network is deployed with a high frequency range and a low frequency range, the SFN-specific cells include cells in the low frequency range, and the cells or TRP-specific cells include cells in the high frequency range; or, When the network includes a satellite communication network, the SFN-specific cells include high-altitude platform station HAPS cells or high-orbit satellite cells, and the cells or TRP-specific cells include low-orbit satellite cells or cells covered by ground base stations.

26. A random access method, executed by a network side device, characterized in that: The method comprises: When the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process, performing a first operation; The first operation includes any one of the following: Continue to perform the first RACH process; terminating the first RACH process and starting to execute the second RACH process; Abort the RACH process; The movement occurs within at least one SFN, including any of the following: moving from a first object to a second object within a first SFN; Moving from the second SFN to a third SFN, and the terminal accessing the SFN layer; moving from a third object within a fourth SFN to a fourth object within a fifth SFN; Among them, the object includes any of the following items: a cell unique to an SFN, a cell or a transceiver point TRP unique to a cell, a TRP.

27. The method according to claim 26, characterized in that The performing of the first operation includes: In a case where the reference signal RS sent by the network side device includes an RS specific to the SFN, a first operation is performed.

28. The method according to claim 26, characterized in that The continuing to perform the first RACH process includes: The first RACH process continues to be performed according to the first RACH resource.

29. The method according to claim 28, characterized in that The movement within at least one SFN includes: in a case where the movement occurs from a first object to a second object within a first SFN, the first RACH resource satisfies any one of the following: When the RS sent by the network side device includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource corresponding to the second object, and a RACH resource corresponding to the first object; In a case where the RS sent by the network side device includes a first RS and a second RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to an RS specific to the first SFN, a RACH resource corresponding to the second object, and a RACH resource corresponding to the first object; In a case where the RS sent by the network side device includes only the first RS, and the first RS has related RACH resources, the first RACH resources are: RACH resources related to the RS specific to the first SFN; The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, a TRP; the first RS is an RS specific to an SFN; or the second RS is an RS specific to a cell or TRP.

30. The method according to claim 28, characterized in that In the case where the movement occurs within the at least one SFN, including: moving from the second SFN to the third SFN, and the terminal accesses the SFN layer, the first RACH resource satisfies any one of the following items: When the RS sent by the network side device includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource configured by the target system information SI in the second SFN, and a RACH resource configured by the target SI in the third SFN; In a case where the RS sent by the network side device includes a first RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to the RS specific to the second SFN, and a RACH resource related to the RS specific to the third SFN; The first RS is an RS specific to the SFN, or the second RS is an RS specific to the cell or TRP; the target SI is: SI specific to the SFN, or SI specific to the cell or TRP.

31. The method according to claim 28, characterized in that In the case where the movement occurs within the at least one SFN, including: moving from a third object within a fourth SFN to a fourth object within a fifth SFN, the first RACH resource satisfies any of the following: When the RS sent by the network side device includes a first RS and a second RS, and the first RS has no related RACH resource, the first RACH resource is any one of the following: a RACH resource corresponding to the third object, and a RACH resource corresponding to the fourth object; In a case where the RS sent by the network side device includes a first RS and a second RS, and the first RS has a related RACH resource, the first RACH resource is any one of the following: a RACH resource related to an RS specific to the fourth SFN, a RACH resource related to an RS specific to the fifth SFN, a RACH resource corresponding to the third object, and a RACH resource corresponding to the fourth object; In a case where the RS sent by the network side device includes only the first RS, and the first RS has related RACH resources, the first RACH resources are any one of the following: a RACH resource related to the RS specific to the fourth SFN, and a RACH resource related to the RS specific to the fifth SFN; The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

32. The method according to any one of claims 28 to 31, characterized in that The first RACH resource is configured by any one of the following: SFN-specific SI, cell- or TRP-specific SI.

33. The method according to claim 26, characterized in that The starting to execute the second RACH process includes: A second RACH procedure begins to be executed according to the second RACH resource.

34. The method according to claim 33, characterized in that The movement within at least one SFN includes: in a case where the movement occurs from a first object to a second object within a first SFN, the second RACH resource satisfies any one of the following: When the RS sent by the network side device includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: a RACH resource corresponding to the second object; In a case where the RS sent by the network side device includes a first RS and a second RS, and the first RS has a related RACH resource, the second RACH resource is any one of the following: a RACH resource related to an RS specific to the first SFN, and a RACH resource corresponding to the second object; In a case where the RS sent by the network side device includes only the first RS, and the first RS has related RACH resources, the second RACH resources are: RACH resources related to the RS specific to the first SFN; The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

35. The method according to claim 33, characterized in that In the case where the movement occurs within the at least one SFN, including: moving from the second SFN to the third SFN, and the terminal accesses the SFN layer, the second RACH resource satisfies any one of the following: When the RS sent by the network side device includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: a RACH resource configured by the target SI in the third SFN; In a case where the RS sent by the network side device includes a first RS, and the first RS has a related RACH resource, the second RACH resource is: a RACH resource related to an RS specific to the third SFN; The first RS is an RS specific to the SFN, or the second RS is an RS specific to the cell or TRP; the target SI is: SI specific to the SFN, or SI specific to the cell or TRP.

36. The method according to claim 33, characterized in that In the case where the movement occurs within the at least one SFN, including: moving from a third object within a fourth SFN to a fourth object within a fifth SFN, the second RACH resource satisfies any one of the following: When the RS sent by the network side device includes a first RS and a second RS, and the first RS has no related RACH resource, the second RACH resource is: the RACH resource corresponding to the fourth object; In the case where the RS sent by the network side device includes a first RS and a second RS, and the first RS has a related RACH resource, the second RACH resource is any one of the following: a RACH resource related to the RS specific to the fifth SFN, and a RACH resource corresponding to the fourth object; In a case where the RS sent by the network side device includes only the first RS, and the first RS has related RACH resources, the second RACH resources are: RACH resources related to the RS specific to the fifth SFN; The object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, or a TRP; the first RS is an RS specific to an SFN, or the second RS is an RS specific to a cell or TRP.

37. The method according to any one of claims 33 to 35, characterized in that The second RACH resource is configured by any one of the following: SFN-specific SI, cell- or TRP-specific SI.

38. The method according to claim 26, characterized in that When the first condition is met, the first operation includes: terminating the RACH process.

39. The method according to claim 38, characterized in that The first condition includes at least one of the following: The first RACH process uses a RACH resource related to the second RS; The RACH resources configured by the second SI corresponding to different objects are different or independent; Among them, the second RS is an RS specific to a cell or TRP; the object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, and a TRP; the second SI is an SI specific to a cell or TRP.

40. The method according to claim 26, characterized in that The terminating the RACH process includes at least one of the following: Stop receiving uplink messages during the RACH process; Stop sending downlink messages during the RACH process; Release the resources related to the RACH process; Stop or reset the timers and counters related to the RACH process.

41. The method according to claim 26, characterized in that When the second condition is met, the first operation includes: terminating the first RACH process and starting to execute the second RACH process.

42. The method according to claim 41, characterized in that The second condition satisfies at least one of the following: The first RACH process uses a RACH resource related to the second RS; The RACH resources configured by the second SI corresponding to different objects are different or independent; Among them, the second RS is an RS specific to a cell or TRP; the object includes any one of the following: a cell specific to an SFN, a cell specific to a cell or TRP, and a TRP; the second SI is an SI specific to a cell or TRP.

43. The method according to claim 26, characterized in that When the third condition is met, the first operation includes: continuing to execute the first RACH process.

44. The method according to claim 43, characterized in that The third condition satisfies at least one of the following: The first RACH process uses a RACH resource related to the first RS; The RACH resource used by the first RACH process is determined by the at least one SFN coordination or by the object coordination within the SFN range; The first RS is an RS specific to SFN.

45. The method according to claim 26, characterized in that Before performing the first operation, the method further includes: Acquire a candidate RACH resource according to the first information; performing the first RACH process according to the candidate RACH resource; The first information includes at least one of the following: SI specific to a cell or TRP; SI specific to an SFN; a radio resource control RRC message; or a paging message.

46. ​​The method according to claim 45, characterized in that The candidate RACH resources include at least one of the following: RS-related RACH resources specific to a cell or TRP, and RS-related RACH resources specific to a SFN.

47. The method according to claim 45, characterized in that The performing the first RACH process according to the candidate RACH resource includes: selecting a third RACH resource from the candidate RACH resources according to the second information; performing the first RACH process according to the third RACH resource; The second information includes at least one of the following: a preset rule, a measurement result of the RS corresponding to the cell or TRP, and a measurement result of the RS corresponding to the SFN.

48. The method according to claim 26, characterized in that The method further comprises: When the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process, performing a second operation; The second operation includes at least one of the following: Send cell or TRP-specific SI; Send SFN-specific SI; Sending cell or TRP-specific RS; Send SFN-specific RS.

49. The method according to claim 26, characterized in that The method further comprises: Sending a cell or TRP-specific RS according to the third information; The third information includes at least one of the following: a Paging message, SI corresponding to a cell or TRP, and SI corresponding to SFN.

50. The method of claim 26, wherein: When the network is deployed with a high frequency range and a low frequency range, the SFN-specific cells include cells in the low frequency range, and the cells or TRP-specific cells include cells in the high frequency range; or, When the network includes a satellite communication network, the SFN-specific cells include high-altitude platform station HAPS cells or high-orbit satellite cells, and the cells or TRP-specific cells include low-orbit satellite cells or cells covered by ground base stations.

51. A random access device, characterized in that: The random access device comprises: A first execution module, configured to execute a first operation when the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process; The first operation includes any one of the following: Continue to perform the first RACH process; terminating the first RACH process and starting to execute the second RACH process; Abort the RACH process; The movement occurs within at least one SFN, including any of the following: moving from a first object to a second object within a first SFN; Moving from the second SFN to a third SFN, and the terminal accessing the SFN layer; moving from a third object within a fourth SFN to a fourth object within a fifth SFN; Among them, the object includes any of the following items: a cell unique to an SFN, a cell or a transceiver point TRP unique to a cell, a TRP.

52. A random access device, characterized in that: The random access device comprises: A fourth execution module, configured to execute a first operation when the terminal moves within at least one single frequency network SFN during the execution of the first random access RACH process; The first operation includes any one of the following: Continue to perform the first RACH process; terminating the first RACH process and starting to execute the second RACH process; Abort the RACH process; The movement occurs within at least one SFN, including any of the following: moving from a first object to a second object within a first SFN; Moving from the second SFN to a third SFN, and the terminal accessing the SFN layer; moving from a third object within a fourth SFN to a fourth object within a fifth SFN; Among them, the object includes any of the following items: a cell unique to an SFN, a cell or a transceiver point TRP unique to a cell, a TRP.

53. A communication device, characterized in that: The method comprises a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the random access method as described in any one of claims 1 to 25, or implements the steps of the random access method as described in any one of claims 26 to 50.

54. A readable storage medium, characterized in that The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the steps of the random access method according to any one of claims 1 to 25 are implemented, or the steps of the random access method according to any one of claims 26 to 50 are implemented.

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