Communication method and communication device

Abstract

The invention discloses a communication method and a communication device, and relates to the technical field of communication. In the method, a network device sends first information to a terminal device, the first information comprises first configuration information, a synchronization signal and an identifier of a first cell, and the first configuration information configures a time-frequency resource of random access information of the first cell; and the terminal equipment sends the random access information of the first cell according to the time-frequency resource configured by the first configuration information. Thus, the terminal equipment can be supported to access the first cell. Compared with the terminal equipment which needs to receive the SSB firstly and then receive the SIB1 so as to obtain the information related to the cell access, the scheme provided by the invention can simplify the process of obtaining the information related to the cell access by the terminal equipment, for example, the terminal equipment can not receive the SIB1, so that the power consumption when the terminal equipment performs the cell access process can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and more particularly, to a communication method and a communication device. BACKGROUND

[0002] In order to ensure that a terminal device searches for a cell and accesses a new radio (NR) network, a network device needs to periodically send a synchronization signal block (SSB) and a system information block (SIB) 1. The SSB includes a physical downlink control channel (PDCCH) configuration of the SIB 1, and the PDCCH configuration of the SIB 1 can be used by the terminal device to search for and detect the SIB 1. The SIB 1 includes information related to cell access.

[0003] Currently, when performing a cell initial access process, the terminal device needs to first receive the SSB, search for and detect the SIB 1 in the SSB through the PDCCH configuration of the SIB 1, and obtain information related to cell access based on the SIB 1. However, the above process can cause high power consumption of the terminal device when performing the cell initial access process. For example, the terminal device needs to receive at least three times of information to obtain random access channel (RACH) resource information of the cell. Therefore, how to reduce the power consumption of the terminal device when performing the cell initial access process is a technical problem to be solved at present. SUMMARY

[0004] The present application provides a communication method and a communication device, which can reduce the power consumption of a terminal device when performing a cell initial access process.

[0005] In a first aspect, a communication method is provided, comprising: receiving first information, the first information comprising first configuration information, a synchronization signal, and an identifier of a first cell, the first configuration information being used to configure a time-frequency resource of random access information of the first cell; and sending the random access information of the first cell on the time-frequency resource.

[0006] The scheme of the first aspect can be executed by a device on a terminal device side. The device on the terminal device side can be a terminal device, a module (such as a chip system) in the terminal device, or a logic node, a logic module, or software capable of realizing all or part of the functions of the terminal device. For ease of description, the terminal device is taken as an example in the following description.

[0007] In the method, the configuration information of the time-frequency resource of the random access information of the first cell and the synchronization signal are both carried in the first information, and the terminal device can obtain the synchronization signal and the time-frequency resource of the random access information simultaneously according to the first information. Compared with the NR, the terminal device needs to receive the SSB first, then receive the SIB1, and obtain the information related to cell access. The above scheme can simplify the process of obtaining the information related to cell access by the terminal device. For example, the terminal device can not receive the SIB1, thereby reducing the power consumption of the terminal device in the cell access process.

[0008] In a second aspect, a communication method is provided, including: determining first information, the first information including first configuration information, a synchronization signal, and an identifier of a first cell, the first configuration information being used for configuring a time-frequency resource of random access information of the first cell; and transmitting the first information.

[0009] The scheme in the second aspect can be executed by a device on a network equipment side. The device on the network equipment side can be a network equipment, a module (such as a chip system) in the network equipment, or a logic node, a logic module, or software that can realize all or part of the functions of the network equipment. For the convenience of description, the network equipment is taken as an example in the following description.

[0010] Through the above method, the network equipment can indicate the synchronization signal and the time-frequency resource of the random access information of the first cell to the terminal device through the first information. Compared with the network equipment that needs to transmit the SSB first, and then transmit the SIB1 to indicate the time-frequency resource of the random access information, the above scheme can simplify the process of obtaining the information related to cell access by the terminal device. For example, the network equipment can not transmit the SIB1, thereby reducing the power consumption of the terminal device in the cell access process, and also reducing the power consumption of the network equipment, achieving network energy saving.

[0011] In combination with any one of the first aspect and the second aspect, the first information further includes paging configuration information of the first cell.

[0012] In this way, the synchronization signal, the configuration information of the random access information, and the paging configuration information are carried in the same information, and the terminal device can receive the paging information transmitted by the network equipment to which the first cell belongs according to the paging configuration information of the first cell in the first information, thereby supporting the terminal device to successfully access the first cell and complete camping.

[0013] In combination with any one of the first aspect and the second aspect, the first information further includes N second configuration information and identifiers of N second cells, the second configuration information being used for configuring a time-frequency resource of random access information of the second cell, and N is a positive integer.

[0014] The first information includes N second configuration information entries and N identifiers of the second cell. The network device to which the second cell belongs does not need to send the corresponding second configuration information. When the terminal device moves to the second cell, the terminal device sends the random access information of the second cell to the network device to which the second cell belongs, based on the second configuration information. The network device to which the second cell belongs can receive the random access information of the second cell, thereby supporting the terminal device to randomly access the second cell.

[0015] Combining either the first aspect or the second aspect, the first cell is the cell where the terminal device is currently located, and the second cell is a neighboring cell of the first cell.

[0016] Combining either the first aspect or the second aspect, the first information also includes paging configuration information for N second cells.

[0017] Thus, when the first information also includes paging configuration information for the second cell, the terminal device can receive the paging information sent by the network device corresponding to the second cell based on the paging configuration information of the second cell, thereby enabling the terminal device to successfully access the second cell and complete camping. Furthermore, the terminal device does not need to receive SIB1, which also helps reduce the power consumption of the terminal device.

[0018] Combining either the first aspect or the second aspect, the random access information of the first cell includes at least one of the terminal device's identification information and the terminal device's tracking area information.

[0019] When the random access information of the first cell includes the identification information of the terminal device, the network device belonging to the first cell can determine that the terminal device has a data transmission requirement based on the identification information, and thus can initiate a radio resource control (RRC) connection to the terminal device, or initiate data transmission to the terminal device. Alternatively, the network device belonging to the first cell can determine that the random access information of the first cell originates from the terminal device based on its identification.

[0020] When the random access information of the first cell includes the tracking area information of the terminal device, the network device to which the first cell belongs determines whether the terminal device belongs to the tracking area of ​​the network device corresponding to the first cell based on the tracking area information of the terminal device.

[0021] In conjunction with either the first aspect or the second aspect, the first information also includes physical downlink control channel configuration information for system messages.

[0022] Thus, by carrying physical downlink control channel configuration information in the first message, network devices and terminal devices can be supported in updating system messages.

[0023] Combining either the first or the second aspect, the transmission period of the first message is greater than 160ms.

[0024] Combining either the first or the second aspect, the transmission period of the first message is 320ms, 640ms, or 1280ms.

[0025] In NR, the maximum transmission period of SSB is 160ms. However, in this embodiment, the transmission period of the first information is greater than 160ms. By lengthening the transmission period of the first information, the frequency of the network device sending the first information can be reduced, which is beneficial to reducing the energy consumption of the network device.

[0026] Combining either the first or the second aspect, the synchronization signal includes a primary synchronization signal and a secondary synchronization signal.

[0027] Thirdly, a communication device is provided, which may be a terminal device, or a device or module for performing terminal device functions, etc.

[0028] One possible implementation is that the communication device may include modules or units corresponding to the methods / operations / steps / actions described in the first aspect, which may be hardware circuits, software, or a combination of hardware circuits and software.

[0029] For example, the communication device includes a transceiver unit and a processing unit.

[0030] Fourthly, a communication device is provided, which may be a network device, or a device or module for performing network device functions, etc.

[0031] One possible implementation is that the communication device may include modules or units corresponding to the methods / operations / steps / actions described in the second aspect, which may be hardware circuits, software, or a combination of hardware circuits and software.

[0032] For example, the communication device includes a transceiver unit and a processing unit.

[0033] Fifthly, a communication device is provided, including a processor configured to, by executing a computer program or instructions, or by logic circuitry, cause the communication device to perform the method described in the first aspect and any possible manner of the first aspect; or to cause the communication device to perform the method described in the second aspect and any possible manner of the second aspect.

[0034] In one possible implementation, the communication device also includes a memory for storing the computer program or instructions.

[0035] In one possible implementation, the communication device also includes a communication interface for inputting and / or outputting signals.

[0036] A sixth aspect provides a communication device including logic circuitry and an input / output interface for inputting and / or outputting signals, the logic circuitry being configured to perform the method described in the first aspect and any possible mode of the first aspect; or, the logic circuitry being configured to perform the method described in the second aspect and any possible mode of the second aspect.

[0037] In a seventh aspect, a computer-readable storage medium is provided, on which a computer program or instructions are stored, which, when executed on a computer, cause the method described in the first aspect and any possible manner of the first aspect to be performed; or cause the method described in the second aspect and any possible manner of the second aspect to be performed.

[0038] Eighthly, a computer program product is provided, comprising instructions that, when executed on a computer, cause the method described in the first aspect and any possible mode of the first aspect to be performed; or cause the method described in the second aspect and any possible mode of the second aspect to be performed.

[0039] A ninth aspect provides a chip or chip system comprising: one or more processors configured to execute computer programs or instructions in the memory, such that the chip or chip system implements the methods of the first aspect and any possible implementation thereof; or, such that the chip or chip system implements the methods of the second aspect and any possible implementation thereof.

[0040] In a tenth aspect, a chip is provided, which is installed in a communication device. The chip includes a processor and a communication interface. The processor reads and executes instructions through the communication interface, causing the communication device to perform a method as described in the first aspect and any possible implementation thereof, or to perform a method as described in the second aspect and any possible implementation thereof.

[0041] For a description of the beneficial effects of any of the third to tenth aspects, please refer to the description of the beneficial effects of the first to second aspects, which will not be repeated here. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of a communication system to which embodiments of this application are applicable.

[0043] Figure 2 This is a schematic diagram of the interaction flow of a communication method according to an embodiment of this application.

[0044] Figure 3 This is a schematic diagram of a cyclic shift.

[0045] Figure 4 This is a schematic block diagram of a communication device according to an embodiment of this application.

[0046] Figure 5 This is a schematic block diagram of another communication device according to an embodiment of this application. Detailed Implementation

[0047] To facilitate understanding of the embodiments of this application, the following points will be explained first.

[0048] 1. Unless otherwise stated, “multiple” means two or more.

[0049] 2. Unless otherwise specified or in case of logical conflict, the terms and / or descriptions in different embodiments of this application are consistent and can be referenced in each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0050] III. The various numerical designations used in this application are merely for descriptive convenience and are not intended to limit the scope of protection of this application. The magnitude of the serial numbers used in this application does not imply a sequential order of execution; the execution order of each process should be determined by its function and internal logic. For example, the terms "first," "second," "third," "fourth," and other various terminology (if present) in the specification, claims, and drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.

[0051] Furthermore, any embodiment or design described in this application as "exemplary" or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner for ease of understanding.

[0052] IV. The terms “comprising” and “having” and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may include other steps or units that are not expressly listed or that are inherent to such process, method, product or device.

[0053] V. In this application, "for indicating" can be understood as "enabling", and "enabling" includes direct enabling and indirect enabling. When describing information for enabling A, it may include whether the information directly enables A or indirectly enables A, but it does not mean that the information necessarily carries A.

[0054] The information that enables the information is called the information to be enabled. In the specific implementation process, there are many ways to enable the information to be enabled, such as, but not limited to, directly enabling the information to be enabled, such as the information to be enabled itself or its index. It can also be indirectly enabled by enabling other information, where there is a relationship between the other information and the information to be enabled. It can also enable only a part of the information to be enabled, while the other parts are known or pre-agreed upon. For example, enabling specific information can be achieved by using a pre-agreed (e.g., protocol-defined) arrangement of various pieces of information, thereby reducing enabling overhead to some extent. Simultaneously, common parts of various pieces of information can be identified and enabled uniformly to reduce the enabling overhead caused by individually enabling the same information.

[0055] In addition, "instruction" can include direct instruction, indirect instruction, explicit instruction, and implicit instruction. When describing a certain instruction information to indicate A, it can be understood that the instruction information carries A, directly indicates A, or indirectly indicates A.

[0056] In this application, the information indicated by the instruction information is called the information to be instructed. In specific implementations, there are many ways to indicate the information to be instructed, such as, but not limited to, directly indicating the information to be instructed, such as the information to be instructed itself or its index. It can also indirectly indicate the information to be instructed by indicating other information, where there is a relationship between the other information and the information to be instructed. It can also indicate only a part of the information to be instructed, while the other parts are known or pre-agreed upon. For example, the instruction of specific information can be achieved by using a pre-agreed (e.g., protocol-defined) arrangement of various pieces of information, thereby reducing instruction overhead to some extent. Furthermore, the information to be instructed can be sent as a whole or divided into multiple sub-information pieces, and the sending period and / or timing of these sub-information pieces can be the same or different.

[0057] VI. The term "storage" or "preservation" in this application can refer to storage in one or more memory devices. These memory devices can be separately configured or integrated into an encoder, decoder, processor, or communication device. Alternatively, some memory devices can be separately configured, while others can be integrated into a decoder, processor, or communication device. The type of memory can be any form of storage medium, and this is not limited.

[0058] VII. The "protocol" used in this application may refer to standard protocols in the field of communications, for example, it may include fourth-generation (4G) protocols. th Generation 4G network, fifth generation (5G) network th This application does not limit the scope to network protocols such as 5G (generation, 5G), New Radio (NR), 5.5G, and related protocols applied in future communication networks.

[0059] 8. In the schematic diagrams in the accompanying drawings of this application, the dashed arrows or boxes indicate optional steps or optional modules.

[0060] 9. Unless otherwise stated, " / " indicates that the objects before and after are in an "or" relationship. For example, A / B can mean A or B. In this application, "and / or" is merely a description of the relationship between the related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. A and B can be singular or plural.

[0061] 10. In this application, "send" and "receive" indicate the direction of signal transmission. For example, "send information to XX" can be understood as the destination of the information being XX, which may include direct transmission via the air interface or indirect transmission by other units or modules via the air interface. "Receive information from YY" can be understood as the source of the information being YY, which may include direct reception from YY via the air interface or indirect reception from YY by other units or modules via the air interface. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface. In other words, sending and receiving can occur between devices, such as between network devices and terminal devices, or within a device, such as between components, modules, chips, software modules, or hardware modules within the device via a bus, wiring, or interface.

[0062] First, the communication system to which the embodiments of this application are applicable will be described.

[0063] Figure 1 This is a schematic diagram of a communication system to which embodiments of this application apply. For example... Figure 1As shown, the communication system includes a radio access network (RAN) 100 and a core network (CN) 200. RAN 100 includes at least one RAN node (such as 110a and 110b, collectively referred to as 110) and at least one terminal device (such as 120a-120j, collectively referred to as 120). RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices. Figure 1 (Not shown). Terminal device 120 is connected to RAN node 110 wirelessly. RAN node 110 is connected to CN200 wirelessly or via wired connection. The core network equipment in CN200 and RAN node 110 in RAN 100 can be different physical devices, or they can be the same physical device integrating CN logical functions and RAN logical functions.

[0064] RAN 100 can be used for third-generation partner projects (3 rd RAN 100 can be a cellular system related to the Generation Partnership Project (3GPP), such as 4G, 5G communication systems, or future-oriented evolution systems. RAN 100 can also be an open radio access network (O-RAN or ORAN), a cloud radio access network (C-RAN or CRAN), or a wireless fidelity (Wi-Fi) system. RAN 100 can also be a communication system that integrates two or more of the above systems.

[0065] RAN node 110, also known as access network equipment, RAN entity, or access node, is used to help terminal devices achieve wireless access. Multiple RAN nodes 110 in communication system 100 can be of the same type or different types. In some scenarios, the roles of RAN node 110 and terminal device 120 are relative. For example, network element 120i can be a helicopter or drone, which can be configured as a mobile base station. For terminal devices 120j accessing RAN 100 through network element 120i, network element 120i is a base station; however, for base station 110a, network element 120i is a terminal device. RAN node 110 and terminal 120 are sometimes referred to as communication devices. For example, network elements 110a and 110b can be understood as communication devices with base station functions, and network elements 120a-120j can be understood as communication devices with terminal functions.

[0066] In one possible scenario, a RAN node can be a base station (BS), an evolved NodeB (eNB), an access point (AP), a transmission point (TP), a transmission reception point (TRP), a next-generation NodeB (gNB), a next-generation base station in a future communication network, or an access node in a Wi-Fi system. A RAN node can also be a macro base station (such as...). Figure 1 110a), micro base stations or indoor stations (such as Figure 1 (110b) in the context of relay nodes or donor nodes, or wireless controllers in CRAN scenarios.

[0067] RAN nodes can also be servers, wearable devices, vehicles, or in-vehicle equipment, etc. All or part of the functionality of the RAN node in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (e.g., a cloud platform). The RAN node in this application can also be a logical node, logical module, or software capable of implementing all or part of the RAN node's functionality.

[0068] In another possible scenario, multiple RAN nodes collaborate to assist terminal devices in achieving wireless access, with different RAN nodes each implementing some of the base station's functions. For example, RAN nodes can be central units (CUs), distributed units (DUs), CU-control plane (CPs), CU-user plane (UPs), or radio units (RUs). CUs and DUs can be separate entities or included in the same network element, such as a baseband unit (BBU). RUs can be included in radio frequency equipment or radio frequency units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs).

[0069] In different communication systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called O-CU (open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules.

[0070] The number of devices in the communication system described above is for illustrative purposes only and is not limited to this. In actual applications, the communication system may include more terminal devices, more RAN devices, and other devices.

[0071] In this application embodiment, the terminal device is a device with wireless transceiver function, which may refer to user equipment (UE), access terminal, subscriber unit, user station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user equipment.

[0072] In this application embodiment, the terminal device can also be a satellite phone, cellular phone, smartphone, wireless data card, wireless modem, machine-type communication device, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), customer-premises equipment (CPE), point of sale (POS) machine, handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, vehicle-mounted device, communication device mounted on a high-altitude aircraft, wearable device, drone, robot, terminal in device-to-device (D2D) communication, terminal in vehicle-to-everything (V2X) communication, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal in industrial control, or self-driving vehicle. Wireless terminals in applications such as driving, telemedicine or telehealth services, smart grids, transportation safety, smart cities, smart homes, or terminal devices in communication networks that evolve after 5G are not subject to any restrictions.

[0073] In this embodiment of the application, the terminal device may also be a device with communication function in a future communication network, and the form or type of the terminal device in the future communication network is not limited.

[0074] In this application embodiment, the communication device used to implement the functions of the terminal device can be the terminal device itself, or it can be a device capable of supporting the terminal device in implementing the functions, such as a chip system. This device can be installed in the terminal device or used in conjunction with the terminal device. In this application, the chip system can be composed of chips, or it can include chips and other discrete components.

[0075] In this embodiment, the network device is a device with wireless transceiver capabilities used to communicate with terminal devices. The network device can be a node in the RAN, also known as a base station or RAN node. It can be an eNB in ​​Long Term Evolution (LTE); a base station in a 5G network such as a gNB; a base station in a Public Land Mobile Network (PLMN) evolving after 5G; a Broadband Network Gateway (BNG); an aggregation switch; or a network device in 3GPP, etc.

[0076] Network equipment can also include various forms of base stations, such as macro base stations, micro base stations (also known as small stations), relay stations, TRPs, transmission points (TPs), mobile switching centers, and equipment that performs base station functions in D2D, V2X, and machine-to-machine (M2M) communications, as well as network equipment in non-terrestrial networks (NTNs), etc., without specific limitations.

[0077] In this embodiment, the communication device used to implement the functions of the network device can be the network device itself, or it can be a device that supports the network device in implementing those functions, such as a chip system. This device can be installed in the network device or used in conjunction with the network device. The chip system in this embodiment can be composed of chips, or it can include chips and other discrete components.

[0078] The network architecture and service scenarios described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in this application. Those skilled in the art will understand that, with the evolution of communication network architectures and the emergence of new service scenarios, the technical solutions provided in this application are also applicable to similar technical problems. For example, this application can be applied to V2X scenarios.

[0079] The following is a brief description of the main terms involved in the embodiments of this application.

[0080] I. SSB

[0081] SSB includes primary synchronization signals (PSS), secondary synchronization signals (SSS), and physical broadcast channel (PBCH).

[0082] PSS and SSS can be used to determine the physical cell identifier (PCI) of a cell. PCI is related to N... ID 1 and N ID 2 Related. For example, PSS is used to determine N. ID 2 N ID 2 The value of is {0, 1, 2}; SSS is used to determine N. ID 1 N ID 1 The value of is {0, 1, ..., 334, 335}.

[0083] The PBCH primarily carries the master information block (MIB), which includes information related to SIB1, such as the SIB1 PDCCH configuration, used for SIB1 search and detection. Additionally, SIB1 includes information related to cell access, such as random access parameters. Descriptions of SIB1 and MIB can be found in existing standards and will not be repeated here.

[0084] II. Initial Access Procedure for the Community

[0085] In the current NR (Network Node) system, the initial access process for terminal devices is as follows:

[0086] a. Network devices periodically send SSBs to terminal devices. Correspondingly, terminal devices receive SSBs according to the SSB sending cycle.

[0087] b. Since PSS and SSS have fixed positions in time-frequency resources, by detecting PSS and SSS, terminal devices can achieve symbol synchronization, frame synchronization and obtain PCI with network devices.

[0088] c. The terminal device decodes the PBCH and obtains the MIB message based on the information provided by the PSS and SSS. The MIB message includes key parameters required for decoding other system information (SI), such as the PDCCH configuration information of SIB1.

[0089] d. The terminal device searches for the control resource set (CORSET) 0 and the search space (SS) based on the PDCCH configuration of SIB1 in the MIB message.

[0090] e. The terminal device uses blind decoding in the configured SS to schedule downlink control information (DCI) 1_0 for SIB1.

[0091] f. Upon detecting DCI 1_0, the terminal device uses the system information radio network temporary identifier (RNTI) to further verify and obtain the specific content of DCI 1_0.

[0092] g. The terminal device uses the information provided in DCI 1_0 to find and decode the SIB1 message carried on the physical downlink shared channel (PDSCH).

[0093] h. The terminal device obtains the key parameters required for decoding other SIB messages based on SIB1.

[0094] i. The terminal device obtains RACH resources based on the RACH-related information included in SIB1. It can also continue to decode other SIB messages based on the key parameters required for decoding other SIB messages in SIB1 to obtain complete network configuration and random access information.

[0095] In the current initial cell access procedure, the terminal device needs to obtain the PDCCH configuration information of SIB1 from the PBCH in the SSB, and perform SIB1 search and detection based on the PDCCH configuration of SIB1. Upon receiving SIB1, the terminal device obtains cell access-related information based on SIB1, and completes the initial cell access procedure (or achieves initial cell access) based on this information.

[0096] However, the above process may result in high power consumption for the terminal device. For example, the terminal device needs to receive information at least three times to obtain the RACH resource information of the cell. In view of this, this application provides a communication method and communication apparatus that can reduce the power consumption of the terminal device during initial cell access.

[0097] The communication method of the present application embodiment is described below with reference to the accompanying drawings.

[0098] For ease of understanding and explanation, the communication method of this application embodiment is described below using network-side devices and terminal-side devices as examples, but this should not constitute any limitation on the executing entity of the communication method of this application embodiment. For example, the network-side device may be a network device 110, or a functional module (such as a circuit, chip, or chip system), or a logical node, logical module, or software that can implement all or part of the functions of the network-side device. Similarly, the terminal-side device may be a terminal device 120, or a functional module (such as a circuit, chip, or chip system), or a logical node, logical module, or software that can implement all or part of the functions of the terminal-side device.

[0099] When the steps involving sending or receiving are performed by modules (such as circuits, chips, or chip systems), logic nodes, logic modules, or software in network-side devices and terminal-side devices, sending / receiving can be understood as communicating through communication interfaces, input / output interfaces, pins, or circuits.

[0100] Figure 2 This is a schematic diagram of the interaction flow of a communication method according to an embodiment of this application. For example... Figure 2 As shown, the method includes:

[0101] S201, Network device 110 determines the first information.

[0102] To reduce power consumption during cell access procedures, the first information determined (or generated) by network device 110 may include first configuration information, synchronization information, and the identifier of the first cell. The first configuration information is used to configure the time-frequency resources of the random access information of the first cell, and the synchronization signal is used for synchronization between the terminal device and the network device. Alternatively, the time-frequency resources of the random access information of the first cell included in the first information can be used by the terminal device to send the random access information of the first cell to the network device to which the first cell belongs, thereby enabling the terminal device to access the first cell.

[0103] When the configuration information of time-frequency resources and the synchronization signal of random access information in the first cell are both carried in the first information, the terminal device can simultaneously know the synchronization signal and the time-frequency resources of random access information based on the first information.

[0104] In one possible implementation, the aforementioned synchronization signals may include PSS and SSS. The identifier of the first cell may be represented by PCI or other terms, without limitation. As a possible example, the random access information of the first cell may also be replaced by terms such as the uplink random access signal of the first cell or the random access signal of the first cell, without limitation.

[0105] In this embodiment of the application, the random access information of the first cell can be composed of a set of orthogonal sequences (such as a preamble sequence or an M-sequence). For example, the preamble sequence can be generated as follows:

[0106] 1) Use prach-RootSequenceIndex to generate a ZC root sequence.

[0107] 2) 64 different leader sequences are generated by cyclically shifting the ZC root sequence.

[0108] The first ZC root sequence index of each cell can be indicated by prach-RootSequenceIndex. If the number of leading sequences generated by cyclic shifting the ZC root sequence corresponding to the ZC root sequence index is less than 64, then the leading sequence can be generated by using the ZC root sequence corresponding to the next ZC root sequence index until 64 leading sequences are generated.

[0109] The formula for generating the ZC root sequence is as follows:

[0110]

[0111] μ: The index value of the ZC root sequence is related to the length of the preceding sequence. For example, the length L of the preceding sequence... RA The value of μ is 839, and the value of μ ranges from 1 to 838; or, the length of the leader sequence L... RA The value is 139, and the value of μ ranges from 1 to 138.

[0112] 3GPP TS 38.211V15.7.0 defines the index table of ZC root sequences, which can be found in Table 1. Table 1 is based on L... RA For example, 139.

[0113] Table 1

[0114]

[0115] As shown in Table 1, for example, if prach-RootSequenceIndex indicates i = 0, then μ = 1; if prach-RootSequenceIndex indicates i = 1, then μ = 138.

[0116] Based on a specific ZC root sequence, more zero-correlation leading sequences can be generated through cyclic shifting. Cyclic shifting involves moving the ZC root sequence by concatenating its ends and shifting it by a certain number of positions. (See also...) Figure 3 .

[0117] Figure 3 This is a schematic diagram of a cyclic shift. (For example...) Figure 3 As shown, the length L of the ZC root sequenceRA The value is 10. The first and last bits are connected and shifted by 3 bits and 6 bits respectively. Before the shift, the ZC root sequence is: {X1(0), X1(1), X1(2), X1(3), X1(4), X1(5), X1(6), X1(7), X1(8), X1(9)}. After shifting by three bits, the ZC root sequence is: {X1(3), X1(4), X1(5), X1(6), X1(7), X1(8), X1(9), X1(0), X1(1), X1(2)}. After shifting by three more bits, the ZC root sequence is: {X1(6), X1(7), X1(8), X1(9), X1(0), X1(1), X1(2), X1(3), X1(4), X1(5)}.

[0118] The formula for circular shift can be:

[0119]

[0120] Where, N CS represents the cyclic shift length, configured via zeroCorrelationZoneConfig. Network device 110 can send zeroCorrelationZoneConfig as a random access configuration for the cell to terminal device 120. v represents the number of preamble sequences that a ZC root sequence can generate, equal to L. RA / N CS Round down, for example, L RA For 139, N CS If the value is 19, then v = 7.

[0121] Example of generating 64 leader sequences:

[0122] 1) Calculate N based on the cell radius CS Assuming the cell radius is set to R, N is calculated. CS The value is 19, according to 3GPP TS 38.211.

[0123] In version 6.3.3.1-7 of V15.7.0, the corresponding zeroCorrelationZoneConfig is 10, as shown in Table 2.

[0124] Table 2

[0125]

[0126]

[0127] 2) Determine the index of the first ZC root sequence: Assume the length of the preceding sequence is L. RAThe value is 139, the first ZC root sequence index is 0 (indicated by prach-RootSequenceIndex), and terminal device 120 obtains μ=1 by looking up table 1.

[0128] 3) Calculate the number of leading sequences generated for each root sequence: based on LRA = 139 and N CS =19, calculating a ZC root sequence can generate A leading sequence.

[0129] 4) Calculate the number of root sequences and their corresponding indices required: One cell requires 64 leader sequences, therefore... The ZC root sequences are indexed as follows: 1, 138, 2, 137, 3, 136, 4, 135, 5 and 134.

[0130] 5) Generate 64 corresponding leader sequences according to formulas (1) and (2).

[0131] In this way, different terminal devices can choose different sequences to avoid conflicts.

[0132] One possible implementation is that the random access information of the first cell includes at least one of the identification information of the terminal device 120 and the tracking area information of the terminal device 120. The tracking area information of the terminal device 120 may include a tracking area identifier or a tracking area index of the terminal device 120, etc.

[0133] For example, when the random access information of the first cell includes the identification information of terminal device 120 (such as the identifier or index of terminal device 120), the network device to which the first cell belongs (which can be network device 110) can determine that terminal device 120 has a data transmission requirement based on the identification information of terminal device 120, and thus can initiate a radio resource control (RRC) connection to terminal device 120, or initiate data transmission to terminal device 120. Alternatively, the network device to which the first cell belongs can determine that the random access information of the first cell comes from terminal device 120 based on the identifier of terminal device 120.

[0134] For example, when the random access information of the first cell includes the tracking area information of the terminal device 120, the network device to which the first cell belongs determines whether the terminal device 120 belongs to the tracking area of ​​the network device to which the first cell belongs based on the tracking area information of the terminal device 120.

[0135] Furthermore, when the network device to which the first cell belongs determines that the terminal device 120 belongs to the tracking area of ​​the network device to which the first cell belongs, the network device to which the first cell belongs can initiate an RRC connection to the terminal device 120.

[0136] Furthermore, when the network device to which the first cell belongs determines that the terminal device 120 is not within the tracking area of ​​the network device to which the first cell belongs, the network device to which the first cell belongs may not initiate an RRC connection to the terminal device 120.

[0137] One possible implementation is that the first information may include first configuration information and a synchronization signal, which may indicate the identifier of the first cell. This reduces the signaling overhead used to indicate the identifier of the first cell.

[0138] One possible implementation is that the first information may also include the paging configuration information of the first cell.

[0139] For example, the paging configuration information of the first cell may include, but is not limited to: paging cycle (discontinuous reception (DRX) cycle), paging frame (PF) offset within the paging cycle, and the starting position of paging occasion (PO). A DRX cycle includes at least one PF. One PF corresponds to at least one PO. Terminal device 120 only needs to wake up once within one DRX cycle to monitor one PO. Furthermore, the DRX cycle represents the period during which terminal device 120 detects paging, the PF represents the system frame for paging detection by terminal device 120, and the PO represents the specific PDCCH monitoring occasions for paging detection by the terminal device.

[0140] Terminal device 120 can calculate and determine the positions of PF and PO using relevant formulas. For example,

[0141] PF: (SFN+PF_offset)mod T=(T div N)*(UE_ID mod N);

[0142] i_s:floor(UE_ID / N)mod N S =0.

[0143] Here, SFN represents the system frame number. T represents the DRX period. Generally, the system information will contain a cell-level T. c At the same time, there may also be UE-level T. UE If there is no instruction T UEThen T = T UE If T is indicated UE Then T = min{T} c T UE}. N represents the total number of PFs in T. N S This indicates the number of POs corresponding to a PF. PF_offset represents the offset of the PF. UE_ID represents the remainder of the UE's International Mobile Subscriber Identifier (IMSI) modulo 1024, where mod is the modulo operation. floor represents the floor function. i_s represents the index of the PO corresponding to the PF.

[0144] For a description of the paging configuration information for the first cell, please refer to Table 3.

[0145] Table 3

[0146]

[0147] Based on the information shown in Table 3, terminal device 120 needs to wake up every 320ms (T*10ms) and attempt to receive paging information. Within the DRX cycle, one PF (Power Point) is available to send paging information in every two system frames (N=16). Different terminal devices can select one of the 16 POs within the aforementioned DRX cycle to receive paging information based on their different UE_IDs.

[0148] Thus, when the first information also includes paging configuration information for the first cell, the terminal device 120 can receive the paging information sent by the network device to which the first cell belongs, based on the paging configuration information of the first cell in the first information. This enables the terminal device 120 to successfully access the first cell and complete its camping. Furthermore, the terminal device 120 does not need to receive SIB1, which also helps reduce the power consumption of the terminal device 120.

[0149] S202, network device 110 sends first information to terminal device 120. Correspondingly, terminal device 120 receives the first information.

[0150] For example, the first information can be carried in downlink signals, such as SSB or other signals. Alternatively, the first information can be carried in dedicated signaling, such as RRC signaling.

[0151] It should be noted that when the first information is carried in the SSB, the SSB is a newly designed SSB, which includes the time and frequency resources of the cell's random access information.

[0152] Specifically, network device 110 can periodically send first information to terminal device 120.

[0153] One possible implementation is that the first message is sent over a period of more than 160 milliseconds, such as 320ms, 640ms, 1280ms, etc.

[0154] In NR, the maximum transmission period of SSB is 160ms. However, in this embodiment, the transmission period of the first information is greater than 160ms. By lengthening the transmission period of the first information, the frequency at which network device 110 transmits the first information can be reduced, which helps to reduce the power consumption of network device 110. S203, terminal device 120 transmits the random access information of the first cell. Correspondingly, the network device to which the first cell belongs receives the random access information of the first cell.

[0155] After receiving the first information, the terminal device 120 determines the time-frequency resources of the random access information of the first cell according to the first configuration information, and sends the random access information of the first cell to the network device to which the first cell belongs through the time-frequency resources. The network device to which the first cell belongs can correctly detect the random access information of the first cell and can determine the terminal device 120's request to access the first cell based on the random access information of the first cell.

[0156] Using the above method, terminal device 120 can determine the time-frequency resources for sending random access information of the first cell based on the first configuration information in the first information, and can send the random access information of the first cell to the network device to which the first cell belongs based on the time-frequency resources, thereby enabling terminal device 120 to access the first cell. Compared to the previous method where terminal device 120 needs to receive SSB first and then SIB1 to obtain information related to cell access, the above scheme simplifies the process of terminal device 120 obtaining information related to cell access. For example, terminal device 120 does not need to receive SIB1 again, thereby reducing the power consumption of terminal device 120 during the cell access process.

[0157] One possible implementation is that the terminal device 120 periodically sends random access information of the first cell to the network device to which the first cell belongs. For example, after moving for a period of time, the terminal device 120 sends the random access information of the first cell to the network device to which the first cell belongs.

[0158] One possible implementation is that the terminal device 120 periodically sends the random access information of the first cell to the network device to which the first cell belongs. For example, when the terminal device 120 moves outside the coverage area of ​​the network device to which the first cell belongs or moves outside the tracking area, the terminal device 120 sends the random access information of the first cell to the network device to which the first cell belongs. In this way, the power consumption of the terminal device 120 can be effectively reduced.

[0159] One possible implementation includes at least N second configuration information entries and N identifiers of the second cells. The second configuration information is used to configure the random access information of the second cells. A description of the second configuration information and the identifiers of the second cells can be found in Table 4. However, the content in Table 4 is only an example and not a final limitation.

[0160] Table 4

[0161] Configuration information Identity of a cell Configuration information 1 Cell identity 1 Configuration information 2 Cell identity 2 Configuration information 3 Cell identity 3

[0162] As shown in Table 4, N = 3:

[0163] The first and second configuration information is configuration information 1, which is associated with cell identifier 1. Cell identifier 1 is the identifier of the first and second cells.

[0164] Used to identify the first second cell;

[0165] The second configuration information is configuration information 2, which is associated with cell identifier 2. Cell identifier 1 is the identifier of the second cell.

[0166] Used to identify the second secondary cell;

[0167] The third second configuration information is configuration information 3, which is associated with cell identifier 3. Cell identifier 1 is the identifier of the third second cell.

[0168] Used to identify the third second cell.

[0169] Wherein, the first cell is the cell where the terminal device is currently located, and the second cell is a neighboring cell of the first cell, or the second cell is the territory of the cell where the terminal device is currently located.

[0170] In one possible implementation, the N second cells and the first cell can belong to network device 110, that is, network device 110 manages the first cell and the N second cells. In this way, network device 110 can carry the time-frequency resources of random access information for multiple cells in the first information. Network device 110 does not need to indicate the time-frequency resources of the corresponding random access information for each of the N second cells, which can reduce the power consumption of network device 110.

[0171] In another possible implementation, the N second cells and the first cell can belong to different network devices, that is, the first cell belongs to network device 110, and some or all of the N second cells belong to network device 220. Figure 1 (Not shown). In this way, network device 110 can carry the time-frequency resources and the corresponding cell identifier of the random access information of the cell managed by other network devices in the first information, which can reduce the energy consumption of other network devices.

[0172] The first information includes N second configuration information entries and N identifiers of the second cells. The network device to which the second cell belongs (which can be network device 110 or a network device different from network device 110) does not need to send the corresponding second configuration information and the corresponding cell identifier. When the terminal device 120 moves to the second cell, the terminal device 120 can send the random access information of the second cell to the network device to which the second cell belongs, according to the time-frequency resources of the random access information of the second cell configured in the second configuration information in the first information. The network device to which the second cell belongs can receive the random access information of the second cell, thereby supporting the terminal device 120 to randomly access the second cell.

[0173] It should be noted that when the network equipment of the first cell is different from that of the second cell, the network equipment of the first cell and the network equipment of the second cell can be synchronized or aligned.

[0174] When the network device belonging to the first cell is different from the network device belonging to the second cell, the network device belonging to the first cell and the network devices belonging to the N second cells can be located in the same tracking area (TA), for example, TA1. When the terminal device 120 moves to TA1, the terminal device 120 sends the random access information of the corresponding cell to the corresponding network device according to the first configuration information or the second configuration information in the first information. Among them, the network device 110 broadcasts the configuration information (such as the first configuration information and the N second configuration information) corresponding to each cell (which may include the first cell and the N second cells) in TA1 to the terminal device 120. Other network devices in TA1 (excluding network device 110) may not broadcast the time-frequency resources of the random access information of the cells they manage, which can reduce the energy consumption of the network devices.

[0175] One possible implementation is that the first information may also include paging configuration information for N second cells.

[0176] When the first information also includes paging configuration information for the second cell, the terminal device 120 can receive paging information sent by the network device to which the second cell belongs, based on the paging configuration information of the second cell. This enables the terminal device 120 to successfully access the second cell and complete its camping. Furthermore, the terminal device 120 does not need to receive SIB1, which also helps reduce the power consumption of the terminal device 120.

[0177] One possible implementation is that the first information may also include the PDCCH configuration of system messages, such as the PDCCH configuration of SIB1. Alternatively, the first information may also include the PBCH, where the PBCH is used to schedule the PDCCH configuration of SIB1.

[0178] When the first information also includes the PDCCH configuration of the system message, the terminal device 120 can receive the system message according to the PDCCH configuration of the system message. This allows the terminal device 120 to update the system message. Alternatively, when the network device 110 determines that a system message update is needed, the first information sent by the network device 110 to the terminal device 120 can also include the PDCCH configuration of the system message, which facilitates the terminal device 120 in updating the system message.

[0179] In summary, this application supports configuring first configuration information, synchronization signals, and the identifier of the first cell in the first information. This allows the terminal device 120 to obtain time-frequency resources and synchronization signals for sending random access information of the first cell based on the first configuration information, thereby enabling the terminal device 120 to perform the initial cell access process with lower power consumption.

[0180] To implement the functions of the methods provided in this application, both the terminal device 120 and the network device 110 may include hardware structures and / or software modules, implementing the aforementioned functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Whether a particular function is implemented in the form of hardware structures, software modules, or a combination of hardware structures and software modules depends on the specific application and design constraints of the technical solution.

[0181] Figure 4 This is a schematic block diagram of a communication device according to an embodiment of this application. The communication device includes a processing circuit 410 and a transceiver circuit 420, which can be interconnected or coupled, for example, interconnected via a bus 430. The communication device can be a terminal device 120 or a network device 110.

[0182] Optionally, the communication device may further include a memory 440. The memory 440 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or compact disc read-only memory (CD-ROM). The memory 440 is any other medium capable of carrying or storing desired program code in the form of instructions or data structures that can be accessed by a computer, but is not limited thereto. The memory in the embodiments of this application may also be a circuit or any other device capable of implementing a storage function for storing computer programs or instructions, and / or data.

[0183] The processing circuit 410 may be all or part of the processing circuitry in one or more processors, or it may be one or more processors. The processor may be a central processing unit (CPU). If the processing circuit 410 is a CPU, the CPU may be a single-core CPU or a multi-core CPU. The processing circuit 410 may be a signal processor, a chip, or other integrated circuit capable of implementing the methods of this application, or a portion of the circuitry within the aforementioned processor, chip, or integrated circuit that performs processing functions. Additionally, the transceiver circuit 420 may be a transceiver, or an input / output interface. An input / output interface is used for inputting or outputting signals or data and may also be referred to as an input / output circuit.

[0184] When the communication device is terminal device 120, for example, the processing circuit 410 is used to perform the following operations: receive first information; send random access information of the first cell to the network device corresponding to the first cell, etc.

[0185] When the communication device is a network device 110, for example, the processing circuit 410 is used to perform the following operations: determine first information; send the first information, etc.

[0186] When the communication device is a terminal device 120 or a network device 110, it will be responsible for executing the methods or steps related to the terminal device 120 or the network device 110 in the aforementioned method embodiments.

[0187] When the communication device is a terminal device 120 or a network device 110, the transceiver circuit 420 can be a transceiver.

[0188] When the communication device is a chip used in terminal device 120 or network device 110, the transceiver circuit 420 can be an input / output circuit.

[0189] The above description is merely exemplary. For details, please refer to the content shown in the above method embodiments.

[0190] Figure 4 The implementation of each operation can also be found by referring to... Figure 2 The corresponding description of the method embodiments shown.

[0191] Figure 5 This is a schematic block diagram of another communication device according to an embodiment of this application. The communication device can be a terminal device 120 or a network device 110, used to implement the methods involved in the above embodiments.

[0192] The communication device includes a transceiver unit 510 and a processing unit 520. The transceiver unit 510 may include a sending unit and a receiving unit. The sending unit is used to perform the sending action of the communication device, and the receiving unit is used to perform the receiving action of the communication device. For ease of description, the sending unit and the receiving unit are combined into one transceiver unit in this embodiment. This will be explained uniformly here and will not be repeated later.

[0193] When the communication device is a terminal device 120, for example, the transceiver unit 510 is used to receive first information and send random access information of the first cell to the network device to which the first cell belongs; the processing unit 520 is used to determine to send the random access information of the first cell to the network device to which the first cell belongs, etc.

[0194] When the communication device is a network device 110, for example, the transceiver unit 510 is used to: send first information; the processing unit 520 is used to determine the first information, etc.

[0195] When the communication device is a terminal device 120 or a network device 110, it will be responsible for executing one or more of the methods or steps related to the terminal device 120 or the network device 110 in the aforementioned method embodiments.

[0196] Optionally, the communication device further includes a storage unit 530 for storing programs or code for performing the aforementioned methods.

[0197] Figure 5 The transceiver unit in the middle can correspond to Figure 4 The transceiver circuit in the middle, Figure 5 The processing unit in the middle can correspond to Figure 4 The processing circuitry within.

[0198] Figure 4 and Figure 5 The illustrated device embodiment is used to implement Figure 2 The content described. Figure 4 and Figure 5 The specific execution steps and methods of the device shown can be found in the content described in the foregoing method embodiments.

[0199] This application also provides a chip, including a processor, for calling and executing instructions stored in a memory, causing a communication device on which the chip is installed to perform the methods described in the examples above. The memory may be integrated within the chip or located externally.

[0200] This application also provides another chip, including: an input interface, an output interface, and a processing circuit, wherein the input interface, the output interface, and the processor are connected through an internal connection path, and the processing circuit is used to execute code in memory. When the code is executed, the processing circuit is used to execute the methods in the above examples.

[0201] Optionally, the chip also includes a memory for storing computer programs or code. The input and output interfaces can be independent of each other, or they can be integrated into a single input / output interface.

[0202] The processing circuitry can be all or part of the processing circuitry in one or more processors, or one or more processors.

[0203] This application also provides a processor for coupling with a memory for performing the methods and functions of a network device or terminal device involved in any of the above embodiments.

[0204] In another embodiment of this application, a computer program product containing instructions is provided, which, when run on a computer, enables the implementation of the methods of the foregoing embodiments.

[0205] This application also provides a computer program that, when run on a computer, enables the implementation of the methods described in the foregoing embodiments.

[0206] In another embodiment of this application, a computer-readable storage medium is provided, which stores a computer program that, when executed by a computer, implements the methods described in the foregoing embodiments.

[0207] It should be understood that in the embodiments of this application, the processor can be a central processing unit (CPU), but it can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0208] In addition, the processor may include one or more of the following: a central processing unit (CPU), a baseband processor, a digital signal processor (DSP), a microprocessor unit (MPU), a microcontroller unit (MCU), a graphics processing unit (GPU), a field programmable gate array (FPGA), an artificial intelligence processor (AI processor), or a neural processing unit (NPU).

[0209] It should also be understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced synchronous SDRAM (ESDRAM), synchronous linked DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0210] The above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more sets of available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. A semiconductor medium can be a solid-state drive.

[0211] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0212] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative; for example, the division of units is merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms.

[0213] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. If the above functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory, random access memory, magnetic disks, or optical disks.

[0214] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

Claims

1. A communication method, characterized in that, Applied to terminal devices, including: Receive first information, the first information including first configuration information, synchronization signal and identifier of first cell, the first configuration information being used to configure the time and frequency resources of random access information of the first cell; The random access information of the first cell is transmitted on the time-frequency resources.

2. The method according to claim 1, characterized in that, The first information also includes the paging configuration information of the first cell.

3. The method according to claim 1 or 2, characterized in that, The first information also includes N second configuration information and N identifiers of the second cell. The second configuration information is used to configure the time-frequency resources of the random access information of the second cell, where N is a positive integer. The first cell is the cell where the terminal device is currently located, and the second cell is a neighboring cell of the first cell.

4. The method according to claim 3, characterized in that, The first information also includes paging configuration information for N second cells.

5. The method according to any one of claims 1 to 4, characterized in that, The random access information of the first cell includes at least one of the terminal device's identification information or the terminal device's tracking area information.

6. The method according to any one of claims 1 to 5, characterized in that, The first information also includes physical downlink control channel configuration information for system messages.

7. The method according to any one of claims 1 to 6, characterized in that, The transmission period of the first information is greater than 160 milliseconds.

8. The method according to any one of claims 1 to 7, characterized in that, The synchronization signal includes a primary synchronization signal and a secondary synchronization signal.

9. A communication method, characterized in that, include: First information is determined, which includes first configuration information, synchronization signal and identifier of first cell. The first configuration information is used to configure the time and frequency resources of random access information of the first cell. Send the first message.

10. The method according to claim 9, characterized in that, The first information also includes the paging configuration information of the first cell.

11. The method according to claim 9 or 10, characterized in that, The first information also includes N second configuration information and N identifiers of the second cell. The second configuration information is used to configure the time-frequency resources of the random access information of the second cell, where N is a positive integer. The first cell is the cell where the terminal device is currently located, and the second cell is a neighboring cell of the first cell.

12. The method according to claim 11, characterized in that, The first information also includes paging configuration information for N second cells.

13. The method according to any one of claims 9 to 12, characterized in that, The random access information of the first cell includes at least one of the terminal device's identification information or the terminal device's tracking area information.

14. The method according to any one of claims 9 to 13, characterized in that, The first information also includes physical downlink control channel configuration information for system messages.

15. The method according to any one of claims 9 to 14, characterized in that, The transmission period of the first information is greater than 160 milliseconds.

16. The method according to any one of claims 9 to 15, characterized in that, The synchronization signal includes a primary synchronization signal and a secondary synchronization signal.

17. A communication device, characterized in that, Includes a processor, the processor being configured to cause the communication device to perform the method of any one of claims 1 to 16 by executing a computer program or instructions, or by using logic circuitry.

18. The communication device according to claim 17, characterized in that, The communication device further includes a memory for storing the computer program or instructions.

19. The communication device according to claim 17 or 18, characterized in that, The communication device further includes a communication interface for inputting and / or outputting signals.

20. A communication device, characterized in that, It includes logic circuitry and input / output interfaces, the input / output interfaces being used to input and / or output signals, and the logic circuitry being used to perform the method of any one of claims 1 to 16.

21. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program or instructions, which, when executed on a computer... This causes the method of any one of claims 1 to 8 or 9 to 16 to be performed.

22. A computer program product, characterized in that, Includes instructions that, when executed on a computer, This causes the method of any one of claims 1 to 8 or 9 to 16 to be performed.

23. A chip, characterized in that, The chip is installed in a communication device. The chip includes a processor and a communication interface. The processor reads and executes instructions through the communication interface. The communication device is made to perform the method according to any one of claims 1 to 16.

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