System information transmission method and apparatus

Abstract

The present application relates to the technical field of wireless communications. Provided are a system information transmission method and apparatus, which save on resource overheads and network energy consumption. In the method, a terminal receives, in a first cell, first system information of a first radio access technology, wherein the first system information carries configuration information of a control channel for scheduling second system information of a second radio access technology. Therefore, the terminal can receive, in a second cell, the control channel for scheduling the second system information on the basis of the configuration information. In the method, the second cell and the first cell share a frequency-domain resource. On the basis of the solution, configuration information of a control channel for scheduling second system information is carried in first system information, such that a terminal can receive the second system information by means of the first system information. Therefore, always-sent signals sent by a base station in a second cell can be reduced, thereby lowering network energy consumption and reducing resource overheads.

Description

A method and apparatus for transmitting system information

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411758558.6, filed on December 2, 2024, entitled "A Method and Apparatus for Transmitting System Information", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of wireless communication technology, and in particular to a method and apparatus for transmitting system information. Background Technology

[0004] Existing standards define dynamic spectrum sharing between the Long Term Evolution (LTE) system in 4th generation (4G) mobile communication systems and the New Radio (NR) system in 5th generation (5G) mobile communication systems. Dynamic spectrum sharing allows for the transmission of 4G and 5G data in the same frequency band through frequency division multiplexing (FDM) or time division multiplexing (TDM). Dynamic spectrum sharing enables smooth evolution between different standards, ensures the performance of 4G terminal devices, minimizes the impact on 4G terminal devices, and accelerates the pace of 5G deployment.

[0005] The standard has not yet defined how 5G cells and 6th generation (6G) mobile communication system cells share spectrum. Summary of the Invention

[0006] This application provides a method and apparatus for transmitting system information, which saves resource consumption and network energy consumption.

[0007] Firstly, a method for transmitting system information is provided. This method can be executed by a terminal or by components within the terminal (e.g., a processor, a chip, etc.). In this method, the terminal receives first system information in a first cell, which is information about the first cell in a first communication standard. The first system information carries configuration information for a control channel used to schedule second system information, and the second system information is information about a second cell in a second communication standard. Based on the configuration information, the terminal receives the control channel in the second cell. The second cell and the first cell share frequency domain resources. In this method, the second communication standard differs from the first communication standard.

[0008] Based on the above scheme, the configuration information of the control channel for scheduling the second system information is carried by the first system information. Therefore, the terminal can receive the second system information through the first system information. The base station does not need to send the synchronization signal / physical broadcast channel block (SSB) of the second cell, which reduces network energy consumption and resource overhead.

[0009] In one possible implementation, the first system information may further include one or more of the following: the subcarrier spacing of the second cell, the time-domain position of the pre-demodulation reference signal of the physical downlink shared channel carrying the second system information, the cell prohibition information of the second cell, the co-frequency cell reselection information of the second cell, or the timing offset between the second cell and the first cell.

[0010] Based on the above scheme, the relevant information of the second cell can be obtained through the information of the first system, which reduces the resource overhead and network energy consumption of the SSB. Furthermore, the terminal can access the second cell through the relevant information of the second cell without having to obtain the relevant information of the second cell through a random access process, which can reduce the access latency of the terminal accessing the second cell.

[0011] In one possible implementation, the configuration information includes information on the time-domain resources and / or frequency-domain resources of the control channel used to schedule the second system information.

[0012] In one possible implementation, the configuration information includes a time-domain resource offset between the control channel used for scheduling the second system information and the control channel used for scheduling the first system information. And / or, the configuration information includes a frequency-domain resource offset between the control channel used for scheduling the second system information and the control channel used for scheduling the first system information.

[0013] In one possible implementation, the first system information also carries first instruction information, which instructs the second cell and the first cell to share frequency domain resources.

[0014] In one possible implementation, the first system information further includes second indication information, which is used to indicate the time-frequency resources carrying the first request information, and the first request information is used to request the transmission of the second system information.

[0015] Based on the above scheme, the information of the second system can be requested by the terminal, that is, sent on demand, which can further save resource consumption and network energy consumption.

[0016] In one possible implementation, the first request information is carried in message 1 or message 3 of the random access procedure. Based on the above scheme, sending the first request information through the random access procedure can reduce the implementation complexity.

[0017] In one possible implementation, when the first request information carries message 1 in the random access procedure, the second indication information is also used to indicate the sequence adopted by the first request information.

[0018] Based on the above scheme, the second indication information indicates the sequence used in the first request information. This allows the base station to distinguish whether the terminal is requesting the transmission of second system information or the transmission of the first communication standard based on the sequence used in the first request information sent by the terminal. Furthermore, by indicating the sequence used in the first request information through the second indication information, the base station can instruct the terminal whether to use the resources of the first cell or the second cell.

[0019] In one possible implementation, the time-domain resources of the control channel for scheduling the second system information are predefined by the protocol and / or the frequency-domain resources of the control channel for scheduling the second system information are predefined by the protocol.

[0020] In one possible implementation, the first system information also carries the correspondence between the beam corresponding to the second system information and the SSB beam of the first cell.

[0021] Secondly, a method for transmitting system information is provided. This method can be executed by a base station or by components within the base station (e.g., processors, chips, etc.). In this method, the base station transmits first system information in a first cell, which is information about the first cell in a first communication standard. The first system information carries configuration information for a control channel used to schedule second system information, and the second system information is information about a second cell in a second communication standard. The base station then transmits the control channel for scheduling the second system information in the second cell. In this method, the first and second communication standards are different.

[0022] In one possible implementation, the first system information may further include one or more of the following: the subcarrier spacing of the second cell, the time-domain position of the pre-demodulation reference signal of the physical downlink shared channel carrying the second system information, the cell prohibition information of the second cell, the co-frequency cell reselection information of the second cell, or the timing offset between the second cell and the first cell.

[0023] In one possible implementation, the configuration information includes information on the time-domain resources and / or frequency-domain resources of the control channel used to schedule the second system information.

[0024] In one possible implementation, the configuration information includes a time-domain resource offset between the control channel used for scheduling the second system information and the control channel used for scheduling the first system information. And / or, the configuration information includes a frequency-domain resource offset between the control channel used for scheduling the second system information and the control channel used for scheduling the first system information.

[0025] In one possible implementation, the first system information also carries first instruction information, which instructs the second cell and the first cell to share frequency domain resources.

[0026] In one possible implementation, the first system information further includes second indication information, which is used to indicate the time-frequency resources carrying the first request information, and the first request information is used to request the transmission of the second system information.

[0027] In one possible implementation, the first request information is carried in message 1 or message 3 of the random access procedure.

[0028] In one possible implementation, when the first request information carries message 1 in the random access procedure, the second indication information is also used to indicate the sequence adopted by the first request information.

[0029] In one possible implementation, the time-domain resources of the control channel for scheduling the second system information are predefined by the protocol and / or the frequency-domain resources of the control channel for scheduling the second system information are predefined by the protocol.

[0030] In one possible implementation, the first system information also carries the correspondence between the beam corresponding to the second system information and the SSB beam of the first cell.

[0031] Thirdly, a communication device is provided, including a processing unit and a transceiver unit.

[0032] The transceiver unit is used to receive first system information in a first cell, which is information about the first cell in a first communication standard. The first system information carries configuration information for a control channel used to schedule second system information, and the second system information is information about a second cell in a second communication standard. The processing unit is used to determine the location of the control channel based on the configuration information. The transceiver unit is also used to receive the control channel in the second cell. The second cell and the first cell share frequency domain resources, and the first communication standard is different from the second communication standard.

[0033] In one possible implementation, the first system information may further include one or more of the following: the subcarrier spacing of the second cell, the time-domain position of the pre-demodulation reference signal of the physical downlink shared channel carrying the second system information, the cell prohibition information of the second cell, the co-frequency cell reselection information of the second cell, or the timing offset between the second cell and the first cell.

[0034] In one possible implementation, the configuration information includes information on the time-domain resources and / or frequency-domain resources of the control channel used to schedule the second system information.

[0035] In one possible implementation, the configuration information includes a time-domain resource offset between the control channel used for scheduling the second system information and the control channel used for scheduling the first system information. And / or, the configuration information includes a frequency-domain resource offset between the control channel used for scheduling the second system information and the control channel used for scheduling the first system information.

[0036] In one possible implementation, the first system information also carries first instruction information, which instructs the second cell and the first cell to share frequency domain resources.

[0037] In one possible implementation, the first system information further includes second indication information, which is used to indicate the time-frequency resources carrying the first request information, and the first request information is used to request the transmission of the second system information.

[0038] In one possible implementation, the first request information is carried in message 1 or message 3 of the random access procedure.

[0039] In one possible implementation, when the first request information carries message 1 in the random access procedure, the second indication information is also used to indicate the sequence adopted by the first request information.

[0040] In one possible implementation, the time-domain resources of the control channel for scheduling the second system information are predefined by the protocol and / or the frequency-domain resources of the control channel for scheduling the second system information are predefined by the protocol.

[0041] In one possible implementation, the first system information also carries the correspondence between the beam corresponding to the second system information and the SSB beam of the first cell.

[0042] Fourthly, a communication device is provided, including a processing unit and a transceiver unit.

[0043] A processing unit is used to generate first system information, which is information about a first cell in a first communication standard. The first system information carries configuration information for a control channel used to schedule second system information, and the second system information is information about a second cell in a second communication standard. A transceiver unit is used to transmit the first system information in the first cell. The transceiver unit is also used to transmit the control channel for scheduling the second system information in the second cell. The first communication standard and the second communication standard are different.

[0044] In one possible implementation, the first system information may further include one or more of the following: the subcarrier spacing of the second cell, the time-domain position of the pre-demodulation reference signal of the physical downlink shared channel carrying the second system information, the cell prohibition information of the second cell, the co-frequency cell reselection information of the second cell, or the timing offset between the second cell and the first cell.

[0045] In one possible implementation, the configuration information includes information on the time-domain resources and / or frequency-domain resources of the control channel used to schedule the second system information.

[0046] In one possible implementation, the configuration information includes a time-domain resource offset between the control channel used for scheduling the second system information and the control channel used for scheduling the first system information. And / or, the configuration information includes a frequency-domain resource offset between the control channel used for scheduling the second system information and the control channel used for scheduling the first system information.

[0047] In one possible implementation, the first system information also carries first instruction information, which instructs the second cell and the first cell to share frequency domain resources.

[0048] In one possible implementation, the first system information further includes second indication information, which is used to indicate the time-frequency resources carrying the first request information, and the first request information is used to request the transmission of the second system information.

[0049] In one possible implementation, the first request information is carried in message 1 or message 3 of the random access procedure.

[0050] In one possible implementation, when the first request information carries message 1 in the random access procedure, the second indication information is also used to indicate the sequence adopted by the first request information.

[0051] In one possible implementation, the time-domain resources of the control channel for scheduling the second system information are predefined by the protocol and / or the frequency-domain resources of the control channel for scheduling the second system information are predefined by the protocol.

[0052] In one possible implementation, the first system information also carries the correspondence between the beam corresponding to the second system information and the SSB beam of the first cell.

[0053] Fifthly, a communication device is provided for implementing the various methods described above. This communication device can be the first device described in the first aspect, such as a chip; or, the communication device can be the second device described in the second aspect. The communication device includes modules, units, or means that implement the methods described above. These modules, units, or means can be implemented in hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the functions described above.

[0054] A sixth aspect provides a communication device, comprising: a processor and a communication interface; the communication interface being used to communicate with a module outside the communication device; the processor being used to execute a computer program or instructions to cause the method described in any of the preceding aspects to be performed. The communication device may be the first device of the first aspect, such as a chip; or, the communication device may be the second device of the second aspect.

[0055] A seventh aspect provides a communication device comprising: at least one processor; said processor being configured to execute a computer program or instructions stored in a memory to implement the method described in any of the preceding aspects. The memory may be coupled to the processor, or may be independent of the processor. The communication device may be a first device as described in the first aspect, such as a chip; or the communication device may be a second device as described in the second aspect.

[0056] Eighthly, this application provides a communication system that may include a first means for performing the method described in the first aspect and a second means for performing the method described in the second aspect.

[0057] Ninthly, this application provides a computer-readable storage medium storing computer-readable instructions that, when read and executed by a computer, cause the computer to perform a method in any possible implementation of any of the first to second aspects described above.

[0058] In a tenth aspect, this application provides a computer program product that, when read and executed by a computer, causes the computer to perform a method in any possible implementation of any of the first to second aspects described above.

[0059] In one aspect, this application provides a chip for reading a computer program stored in a memory to execute the method in any possible implementation of any of the first to second aspects described above.

[0060] It is understandable that the technical effects of the second to eleventh aspects can refer to the technical effects of the first aspect, and will not be elaborated here. Attached Figure Description

[0061] Figure 1 is a schematic diagram of a communication system provided in an embodiment of this application;

[0062] Figure 2 is a schematic diagram of LTE and NR dynamic spectrum sharing provided in an embodiment of this application;

[0063] Figure 3 is an exemplary flowchart of a system information transmission method provided in an embodiment of this application;

[0064] Figure 4A is a schematic diagram of the frequency domain resources of a 6G PDCCH provided in an embodiment of this application;

[0065] Figure 4B is a schematic diagram of a time-domain resource of a 6G PDCCH provided in an embodiment of this application;

[0066] Figure 4C is a schematic diagram of the time-domain and frequency-domain resources of a 6G PDCCH provided in an embodiment of this application;

[0067] Figure 5 is a schematic diagram of a scenario in which a 5G cell and a 6G cell share frequency domain resources, as provided in an embodiment of this application.

[0068] Figure 6 is a schematic diagram of a communication device provided in an embodiment of this application;

[0069] Figure 7 is a schematic diagram of another communication device provided in an embodiment of this application;

[0070] Figure 8 is a schematic diagram of another communication device provided in an embodiment of this application;

[0071] Figure 9 is a schematic diagram of another communication device provided in an embodiment of this application. Detailed Implementation

[0072] Figure 1 is a schematic diagram of the architecture of a communication system 1000 provided in an embodiment of this application. As shown in Figure 1, the communication system 1000 includes a radio access network (RAN) 100, wherein the RAN 100 includes at least one RAN node (110a and 110b in Figure 1, collectively referred to as 110), and may also include at least one terminal (120a-120j in Figure 1, collectively referred to as 120). The RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1). The terminal 120 is wirelessly connected to the RAN node 110. Terminals and RAN nodes can be interconnected via wired or wireless means. The communication system 1000 may also include a core network 200. The RAN node 110 is connected to the core network 200 via wireless or wired means. The core network equipment in core network 200 and the RAN node 110 in RAN 100 can be independent and different physical devices, or they can be the same physical device that integrates the logical functions of the core network equipment and the logical functions of the RAN node. The communication system 1000 may also include the Internet (not shown in Figure 1).

[0073] RAN100 can be an evolved universal terrestrial radio access (E-UTRA) system, an NR system, a 6th generation (6G) radio access system, or a future radio access system as defined in the 3rd generation partnership project (3GPP). RAN100 can also include two or more of the above-mentioned different radio access systems. RAN100 can also be an open RAN (O-RAN).

[0074] RAN nodes, also known as radio access network devices, RAN entities, or access nodes, are used to help terminals access communication systems wirelessly. In one application scenario, an RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a 5G mobile communication system, or a base station in a future mobile communication system. RAN nodes can be macro base stations (as shown in Figure 1, 110a), micro base stations or indoor stations (as shown in Figure 1, 110b), relay nodes, or donor nodes.

[0075] In another application scenario, multiple RAN nodes can collaborate to help terminals achieve wireless access, with different RAN nodes implementing different functions of the base station. For example, a RAN node can be a central unit (CU), a distributed unit (DU), or a radio unit (RU). Here, the CU performs the functions of the base station's Radio Resource Control (RRC) and Packet Data Convergence Protocol (PDCP), and can also perform the functions of the Service Data Adaptation Protocol (SDAP). The DU performs the functions of the base station's Radio Link Control (RANC) and Medium Access Control (MAC) layers, and can also perform some or all of the physical layer functions. For specific descriptions of these protocol layers, refer to the relevant 3GPP technical specifications. The RU can be used to implement radio frequency signal transmission and reception. The CU and DU can be two independent RAN nodes or integrated into the same RAN node, such as within a baseband unit (BBU). The RU can be included in radio frequency equipment, such as in a remote radio unit (RRU) or an active antenna unit (AAU). The CU can be further divided into two types of RAN nodes: CU-control plane and CU-user plane.

[0076] In different systems, RAN nodes may have different names. For example, in an O-RAN system, a CU can be called an open CU (O-CU), a DU can be called an open DU (O-DU), and an RU can be called an open RU (O-RU). The RAN nodes in the embodiments of this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules. For example, a RAN node can be a server loaded with the corresponding software modules. The embodiments of this application do not limit the specific technology or device form used in the RAN nodes. For ease of description, a base station is used as an example of a RAN node in the following description.

[0077] A terminal is a device with wireless transceiver capabilities, capable of sending signals to or receiving signals from a base station. Terminals can also be called terminal equipment, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc. Terminals can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiments of this application do not limit the specific technology or device form used in the terminal.

[0078] Base stations and terminals can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can be deployed on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the base stations and terminals.

[0079] The roles of base stations and terminals can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile base station. For terminals 120j that access the wireless access network 100 through 120i, terminal 120i is a base station; however, for base station 110a, 120i is a terminal, meaning that 110a and 120i communicate via a wireless air interface protocol. Of course, 110a and 120i can also communicate via a base station-to-base station interface protocol. In this case, relative to 110a, 120i is also a base station. Therefore, both base stations and terminals can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be called communication devices with base station functions, and 120a-120j in Figure 1 can be called communication devices with terminal functions.

[0080] Communication between base stations and terminals, between base stations, and between terminals can be conducted using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication can be conducted using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. The embodiments of this application do not limit the spectrum resources used for wireless communication.

[0081] In the embodiments of this application, the functions of the base station can be executed by modules (such as chips) within the base station, or by a control subsystem that includes base station functions. This control subsystem, including base station functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal can be executed by modules (such as chips or modems) within the terminal, or by a device that includes terminal functions.

[0082] In this application, the base station sends downlink signals or downlink information to the terminal, with the downlink information carried on the downlink channel; the terminal sends uplink signals or uplink information to the base station, with the uplink information carried on the uplink channel. To communicate with the base station, the terminal needs to establish a radio connection on a cell controlled by the base station. The cell with which the terminal has established a radio connection is called the terminal's serving cell. When the terminal communicates with this serving cell, it is also susceptible to interference from signals from neighboring cells.

[0083] It is understood that in the embodiments of this application, the physical downlink control channel (PDCCH) and physical downlink shared channel (PDSCH) are only examples of downlink control channels and downlink data channels. In different systems and different scenarios, data channels and control channels may have different names, and the embodiments of this application do not limit this.

[0084] In this application, entity A sends information to entity B, either directly or indirectly through other entities. Similarly, entity B receives information from entity A, either directly or indirectly through other entities. Entities A and B can be RAN nodes or terminals, or modules within RAN nodes or terminals. Information transmission and reception can be between RAN nodes and terminals, such as between a base station and a terminal; between two RAN nodes, such as between a CU and a DU; or between different modules within a single device, such as between a terminal chip and other modules of the terminal, or between a base station chip and other modules of the base station.

[0085] The communication systems and service scenarios described in the embodiments of 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 the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0086] In the early stages of NR network construction, on the one hand, operators wanted to quickly introduce NR networks, and on the other hand, the overall penetration rate of NR terminals was low, and the growth rate of NR traffic was inconsistent in different regions. This brought great planning difficulties to the LTE frequency band refarming to NR, affecting the progress of NR network construction.

[0087] Referring to Figure 2, the existing standard therefore introduces dynamic spectrum sharing between LTE and NR. Dynamic spectrum sharing allows 4G and 5G data to be transmitted on the same frequency band through frequency division multiplexing or time division multiplexing. Dynamic spectrum sharing enables smooth evolution between different standards, ensures the performance of 4G terminals, minimizes the impact on 4G terminals, and accelerates the pace of 5G deployment.

[0088] In 5G, always-on signals include SSBs (Service Signals Blocks). During initial access, the terminal uses SSBs to perform cell search, time-frequency synchronization, and automatic gain control (AGC) adjustments. Additionally, SSBs can carry master information blocks (MIBs). The terminal receives the PDCCH (Plan-Do-Chat Communication) of system information block 1 (SIB1) based on the MIB information. SIB1 is carried by the PDSCH (Plan-Do-Chat Communication) scheduled by the PDCCH. The terminal can receive the PDCCH based on the MIB information and receive SIB1 based on the information carried by the PDCCH. After receiving SIB1, the terminal can obtain the necessary system information for the access cell and complete the initial access.

[0089] SSBs are transmitted periodically, typically with a period of 20ms, but other values ​​are also possible, such as 5ms, 10ms, 40ms, 80ms, or 160ms. In the frequency domain, one SSB can occupy 20 resource blocks, and in the time domain, an SSB can occupy 4 consecutive orthogonal frequency division multiplexing (OFDM) symbols.

[0090] SIB1 carries a significant amount of information. Since SIB1 carries system information, it needs to be designed so that all terminals, including those in the cell center and at the cell edge, can receive it. Therefore, the base station may allocate more time-frequency resources to transmit SIB1 to improve reliability. For example, in the frequency domain, SIB1 typically occupies a large bandwidth, such as the full bandwidth part (BWP) or full bandwidth scheduling; in the time domain, SIB1 may occupy a large number of symbols, such as 12 symbols. The PDCCH scheduling SIB1 occupies 2 symbols, so transmitting SIB1 may require one time slot in the time domain.

[0091] To enable initial terminal access, base stations periodically broadcast SSB and SIB1, which incurs some time-frequency resource overhead. Additionally, the periodic broadcast signals also contribute to network power consumption. This network power consumption primarily includes baseband power consumption and radio frequency (RF) power consumption. Once a 5G cell is activated, the base station's baseband module typically remains active, resulting in baseband power consumption. Furthermore, during broadcast signals, the base station transmits RF signals via its RF module, incurring RF module overhead.

[0092] In this embodiment of the application, to facilitate a smooth evolution from 5G to 6G, spectrum sharing between 5G and 6G cells is proposed. This spectrum sharing between 5G and 6G cells can also be referred to as dynamic spectrum sharing or multi-radio access technology spectrum sharing (MRSS). Once MRSS is enabled on a carrier, both 5G and 6G terminals can access that carrier. For ease of description, this carrier can be referred to as an MRSS carrier. On the MRSS carrier, the base station transmits both 5G SSB and SIB1 signals as well as 6G SSB and SIB1 signals.

[0093] In a 5G single-mode scenario, the base station can broadcast 5G SSB and SIB1 to support initial terminal access. Compared to the 5G single-mode scenario, in the MRSS scenario, the base station must broadcast both 5G and 6G SSB and SIB1. It can be seen that in the MRSS scenario, the number of transmitted signals always increases, thus increasing both network energy consumption and resource overhead.

[0094] Therefore, embodiments of this application provide a method for transmitting system information. In this method, a terminal can receive first system information of a first communication standard in a first cell. The first system information may carry configuration information of a control channel used for scheduling second system information of a second communication standard. Therefore, the terminal can receive the control channel in the second cell based on the configuration information.

[0095] In this method, the second cell and the first cell share frequency domain resources, such as shared carriers. In one possible scenario, the frequency domain resources of the second cell and the first cell can be completely identical. In another possible scenario, the frequency domain resources of the second cell and the first cell can be partially identical.

[0096] Based on the above scheme, the configuration information of the control channel for scheduling the second system information is carried by the first system information. Therefore, the base station does not need to send the SSB of the second cell, which reduces network energy consumption and resource overhead.

[0097] Referring to Figure 3, which is an exemplary flowchart of a system information transmission method provided in an embodiment of this application, the method may include the following steps:

[0098] S301: The base station sends the first system information in the first cell.

[0099] Accordingly, the terminal receives the first system information in the first cell. The first system information may carry configuration information for the control channel used to schedule the second system information.

[0100] S302: Control channel for the base station to send scheduling information for the second system in the second cell.

[0101] Correspondingly, the terminal receives control channel information for scheduling the second system in the second cell based on configuration information.

[0102] In this application, the first system information refers to the information of the first cell in the first communication standard, and the second system information refers to the information of the second cell in the second communication standard, which is different from the first communication standard. For example, the first communication standard is 5G, the first system information is 5G SIB1, and the first cell is a 5G cell; the second communication standard is 6G, the second system information is 6G SIB1, and the second cell is a 6G cell. That is, 5G SIB1 can carry configuration information for the control channel (such as PDCCH) used to schedule 6G SIB1. For ease of description, the control channel for scheduling 5G SIB1 is referred to as 5G PDCCH, and the control channel for scheduling 6G SIB1 is referred to as 6G PDCCH. The embodiments of this application will be described in detail below using this as an example.

[0103] In S302, the terminal can receive the 6G PDCCH in the 6G cell based on the configuration information in 5G SIB1. This 6G PDCCH can indicate the time-frequency resources of 6G SIB1. Then the base station can transmit 6G SIB1 on the time-frequency resources of 6G SIB1, and the corresponding terminal can receive 6G SIB1 on the time-frequency resources of 6G SIB1.

[0104] It should be understood that the term "transmit control channel" as used herein can be interpreted as transmitting the information carried by the control channel on the control channel. Similarly, the term "receive control channel" as used herein can be interpreted as receiving the information carried by the control channel on the control channel.

[0105] In the embodiment shown in Figure 3, the configuration information in 5G SIB1 may include information on the time-domain resources of the control channel of the 6G PDCCH and / or information on the frequency-domain resources of the 6G PDCCH. For example, 5G SIB1 may indicate the frequency-domain resources (such as 6GCORESET) and / or time-domain resources (6G search space) of the 6G PDCCH.

[0106] In some embodiments, 5G SIB1 can indicate the frequency domain resources of the 6G PDCCH. For example, referring to Figure 4A, 5G SIB1 can indicate the frequency domain offset between the frequency domain resources of the 6G PDCCH and the frequency domain resources of the 5G PDCCH (such as 5G CORESET#0). The 5G PDCCH can be used to schedule first system information, such as 5G SIB1. Optionally, the time domain resources of the 6G PDCCH can be predefined by the protocol, such as the time domain resources of the 6G PDCCH being the same as those of the 5G PDCCH (such as the 5G search space). The terminal can determine the frequency domain location of the 6G PDCCH based on the frequency domain resources of the 6G PDCCH indicated by 5G SIB1, such as the frequency domain offset between the frequency domain resources of the 6G PDCCH and the frequency domain resources of the 5G PDCCH.

[0107] In other embodiments, 5G SIB1 can indicate the time-domain resources of the 6G PDCCH. For example, referring to Figure 4B, 5G SIB1 can indicate the time-domain offset between the time-domain resources of the 6G PDCCH and the time-domain resources of the 5G PDCCH. Optionally, the frequency-domain resources of the 6G PDCCH can be predefined by the protocol, such as the frequency-domain resources of the 6G PDCCH being the same as those of the 5G PDCCH. The terminal can determine the time-domain location of the 6G PDCCH based on the time-domain resources of the 6G PDCCH indicated by 5G SIB1, such as the time-domain offset between the time-domain resources of the 6G PDCCH and the time-domain resources of the 5G PDCCH.

[0108] In other embodiments, 5G SIB1 can indicate the frequency domain resources and time domain resources of the 6G PDCCH. For example, referring to FIG4C, 5G SIB1 can indicate the frequency domain offset between the frequency domain resources of the 6G PDCCH and the frequency domain resources of the 5G PDCCH, and 5G SIB1 can indicate the time domain offset between the time domain resources of the 6G PDCCH and the time domain resources of the 5G PDCCH. The terminal can determine the time domain position and frequency domain position of the 6G PDCCH based on the frequency domain resources and time domain resources of the 6G PDCCH indicated by 5G SIB1.

[0109] In one possible implementation, the transmission period of 6G SIB1 can be predefined by the protocol or indicated by 5G SIB1. For example, the period of 6G SIB1 can be predefined by the protocol to be the same as the period of 5G SIB1, or the period of 6G SIB1 can be predefined by the protocol, such as 20ms or 40ms. As another example, 5G SIB1 can indicate that the period of 6G SIB1 is the same as the period of 5G SIB1, or 5G SIB1 can indicate the period of 6G SIB1, such as 20ms or 40ms.

[0110] Referring to Figure 5, a schematic diagram illustrating a scenario of the 6G SIB1 transmission method in an embodiment of this application is provided. As shown in Figure 5, the terminal can receive a 5G SSB. This 5G SSB can carry a MIB, and the terminal receives the 5G PDCCH that schedules 5G SIB1 according to the information carried in the MIB. The terminal can receive 5G SIB1 according to the scheduling information indicated by the 5G PDCCH. The 5G SIB1 can contain configuration information indicating the 6G PDCCH that schedules 6G SIB1. The terminal can receive the 6G PDCCH according to the configuration information carried by the 5G SIB1, and receive 6G SIB1 according to the scheduling information of the 6G PDCCH, thereby completing the initial access with the 6G cell.

[0111] Based on the above scheme, according to the definition in the standard, the information of the control channel for scheduling 6G SIB1 should be carried by 6G SSB. In the above scheme provided in the embodiments of this application, the configuration information of the control channel for scheduling 6G SIB1 can be obtained through 5G SIB1, which reduces the resource overhead and network energy consumption of 6G SSB. Since the terminal does not need to receive 6G SSB, the latency of the terminal accessing the 6G cell can be reduced.

[0112] In one possible implementation, the 5G SIB1 may also carry one or more of the following information:

[0113] 1) Sub-carrier spacing (SCS) of a 6G cell. For example, a first field, such as `subCarrierSpacingCommon-6G`, can be carried in the 5G SIB1, indicating the sub-carrier spacing of the 6G cell. For instance, the first field can be 1 bit of information, indicating 15kHz or 30kHz in the FR1 band, and 60kHz or 120kHz in the FR2 band.

[0114] 2) Time-domain position of the demodulation reference signal (DMRS) of the PDSCH carrying 6G SIB1. For example, 5G SIB1 may carry a second field, such as dmrs-TypeA-Position-6G, which indicates the time-domain position of the DMRS of the PDSCH carrying 6G SIB1. The DMRS can be located at X symbols of the PDSCH carrying 6G SIB1. The second field can indicate the time-domain start position of these X symbols. Optionally, the second field can also indicate the value of X, or the value of X can be predefined by the protocol, for example, X can be 1, or other values, such as 2. For example, the time-domain start position of the X symbols can start from the 3rd symbol or the 4th symbol. Assuming that the symbol numbering in the time slot starts from 0, then the second field can indicate "pos2" or "pos3", that is, the symbols of the PDSCH carrying 6G SIB1 start from the third or fourth symbol.

[0115] 3) 6G Cell Barrier Information. This 6G cell barrier information can indicate whether or not to prohibit 6G terminals from accessing the 6G cell. For example, the 5G SIB1 can carry a third field, such as cellBarred-6G. This third field can be a 1-bit information; a value of 0 indicates that 6G terminals are not prohibited from accessing the 6G cell, and a value of 1 indicates that 6G terminals are prohibited from accessing the 6G cell; conversely, a value of 1 indicates that 6G terminals are not prohibited from accessing the 6G cell, and a value of 0 indicates that 6G terminals are prohibited from accessing the 6G cell.

[0116] 4) Cell reselection information for 6G cells on the same frequency. For example, 5G SIB1 can carry a fourth field, such as intraFreqReselection-6G, indicating whether a 6G terminal is allowed to access a neighboring cell on the same frequency. For instance, this fourth field can be a 1-bit information. When this 1-bit information is 0, it indicates that the 6G terminal is allowed to access the neighboring cell on the same frequency; when the 1-bit information is 1, it indicates that the 6G terminal is not allowed to access the neighboring cell on the same frequency. Conversely, when the 1-bit information is 1, it indicates that the 6G terminal is allowed to access the neighboring cell on the same frequency; when the 1-bit information is 0, it indicates that the 6G terminal is not allowed to access the neighboring cell on the same frequency.

[0117] 5) Timing offset between 6G and 5G cells. Although 5G and 6G cells are on the same carrier, timing offsets may exist between them due to hardware differences or imperfections. A 6G terminal receives the 5G SSB first, initially accesses the 5G cell, and achieves downlink timing synchronization with the 5G cell. However, at this point, the 6G terminal has not yet achieved timing synchronization with the 6G cell. Therefore, the timing offset between the 6G and 5G cells is indicated via 5G SIB1, such as the downlink timing offset (DL time offset), enabling the 6G terminal to achieve downlink timing synchronization with the 6G cell.

[0118] In some embodiments, 5G SIB1 can indicate whether the carrier of the 5G cell shares spectrum with the 6G cell. Since the 6G SSB may not exist on the carrier, the terminal will search for the SSB of the 5G cell on the carrier. Therefore, 5G SIB1 can indicate whether the carrier only deploys 5G cells, or deploys both 5G and 6G cells. Thus, upon receiving 5G SIB1, the terminal can determine whether a 6G cell exists, and when 6G service demand arises, it can switch to the 6G cell on that carrier for data transmission.

[0119] For example, 5G SIB1 can explicitly indicate whether the carrier of the 5G cell is an MRSS carrier, or in other words, 5G SIB1 can explicitly indicate whether the 5G cell and the 6G cell share frequency domain resources, such as sharing a carrier. For example, 5G SIB1 can carry first indication information, which can indicate that the second cell and the first cell share frequency domain resources. For example, the first indication information can be 1 bit of indication information. When the value of this 1 bit of indication information is 0, it indicates that the carrier of the 5G cell is not an MRSS carrier, or in other words, it indicates that the 5G cell and the 6G cell do not share frequency domain resources, that is, only the 5G cell is deployed on the carrier. When the value of this 1 bit of indication information is 1, it indicates that the carrier of the 5G cell is an MRSS carrier, or in other words, it indicates that the 5G cell and the 6G cell share frequency domain resources, that is, both the 5G cell and the 6G cell are deployed on the carrier. Conversely, when the value of this 1-bit indication information is 1, it indicates that the carrier of the 5G cell is not an MRSS carrier, or that the 5G cell and the 6G cell do not share frequency domain resources, meaning that only a 5G cell is deployed on this carrier. When the value of this 1-bit indication information is 0, it indicates that the carrier of the 5G cell is an MRSS carrier, or that the 5G cell and the 6G cell share frequency domain resources, meaning that both a 5G cell and a 6G cell are deployed on this carrier.

[0120] For example, 5G SIB1 can implicitly indicate whether the carrier of a 5G cell is an MRSS carrier, or in other words, 5G SIB1 can implicitly indicate whether a 5G cell and a 6G cell share frequency domain resources, such as sharing a carrier. For instance, when 5G SIB1 carries 6G PDCCH configuration information, it indicates that the carrier is an MRSS carrier, or in other words, it indicates that a 5G cell and a 6G cell share frequency domain resources, meaning that both 5G and 6G cells are deployed on that carrier. Conversely, when 5G SIB1 does not carry 6G PDCCH configuration information, it indicates that the carrier is not an MRSS carrier, or in other words, it indicates that a 5G cell and a 6G cell do not share frequency domain resources, meaning that only a 5G cell is deployed on that carrier.

[0121] In some embodiments, the transmission beam information of 6G SIB1 can be indicated by 5G SIB1 or can be predefined by the protocol. A 5G SSB cycle may transmit multiple SSBs, which form a synchronization signal (SS) burst. Multiple SSBs within an SS burst may be transmitted by different beams, each corresponding to different precoding. There is a one-to-one correspondence between the beams of 5G SIB1 and 5G SSBs. Since the base station does not transmit 6G SSBs, a correspondence may exist between the beams of 6G SIB1 and the beams of 5G SSB / 5G SIB1.

[0122] For example, the number of beams in 6G SIB1 is the same as that in 5G SSB / 5G SIB1, and the beam direction corresponds one-to-one with the beam direction of 5G SSB / 5G SIB1.

[0123] For example, to improve coverage or save network energy, the 6G SIB1 beams may be more numerous and narrower, or fewer and wider, compared to the 5G SSB / 5G SIB1 beams. Currently, the maximum number of 5G SSB / 5G SIB1 beams in the FR1 band is 8. 5G SIB1 can indicate the correspondence between the 6G SIB1 beams and the 5G SSB / 5G SIB1 beams. For instance, one 5G SSB / 5G SIB1 beam corresponds to m 6G SIB1 beams; when m is greater than 1, the 6G SIB1 beams are more numerous than the 5G SSB / 5G SIB1 beams. Conversely, n 5G SSB / 5G SIB1 beams correspond to one 6G SIB1 beam; when n is greater than 1, the 6G SIB1 beams are fewer than the 5G SSB / 5G SIB1 beams.

[0124] It should be noted that m and n are both positive integers.

[0125] In the embodiment shown in Figure 3 above, 6G SIB1 can be transmitted on demand. For example, 6G SIB1 is not transmitted periodically, but based on terminal requests. This can further save resource overhead and network energy consumption. In addition, during periods when 6G SIB1 is not being transmitted, the base station can temporarily disable the 6G baseband function, which can save baseband energy consumption.

[0126] In one possible implementation, the terminal can send a first request message to the base station. This first request message can request the base station to transmit 6G SIB1 in the 6G cell. For example, upon receiving 5G SIB1, the terminal can determine that the 5G cell carrier is an MRSS carrier, and that the carrier also has a 6G cell deployed. Therefore, the terminal can send the first request message to the base station, requesting the base station to transmit 6G SIB1. Then, in S302, upon receiving the first request message, the base station can transmit a control channel, and the base station can also transmit 6G SIB1.

[0127] In one possible scenario, the first request information can be carried in message 1 (MSG1) during the random access procedure. For example, the terminal can send MSG1 to the base station via the physical random access channel (PRACH). MSG1 may carry a preamble sequence. The terminal can receive a 5G SSB from the base station. The terminal can detect the power of the 5G SSB and select the 5G SSB with the highest power. The terminal can randomly select an RO from the random access channel occasions (ROs) associated with the 5G SSB with the highest power and send MSG1. MSG1 may carry the first request information.

[0128] In the above example, the 5G SIB1 can carry second indication information. This second indication information can instruct the terminal to send a preamble sequence of the first request information, or it can instruct the terminal to send a preamble sequence of MSG1 carrying the first request information. For example, the preamble sequence is still based on the 5G standard protocol, and the second indication information indicates that at least one of the preamble sequences is used to indicate the sending of the first request information. The base station can distinguish whether the current terminal is requesting to send 6G SIB1 or requesting traditional 5G transmission based on different preamble sequences. For example, accessing a 5G cell or obtaining uplink synchronization from a 5G cell.

[0129] For example, 5G SIB1 can carry second indication information, which refers to a portion of the RO resources on the 5G cell. If the terminal sends MSG1 on the specified RO resources, it indicates a request for the base station to send 6G SIB1. It is understood that 5G terminals that do not support 6G will not be configured with such RO resources.

[0130] For example, the terminal can use the RO of the 6G cell to send a first request message to the base station. For instance, a preamble sequence and / or RO of the 6G cell can be defined. The 5G SIB1 can carry second indication information, indicating the 6G cell preamble sequence and / or RO of the 6G cell. Upon receiving the 5G SIB1, the terminal determines that the 5G cell carrier is an MRSS carrier, and then the terminal can use the RO of the 6G cell to send MSG1 to the base station.

[0131] The preamble sequence of a 6G cell corresponds to the RO of the 6G cell and can be predefined in the protocol.

[0132] In another possible scenario, the first request information can be carried in message 3 (MSG3) during the random access procedure. The resource carrying MSG3 can be indicated by message 2 (MSG2). For example, after receiving MSG1, the base station sends MSG2 to the terminal; MSG2 is also known as a random access response (RAR) message. The RAR message can indicate the time-domain resource carrying MSG3. The terminal can then send MSG3 carrying the first request information on the time-frequency resource indicated by the RAR message.

[0133] In this case, it is not necessary to configure dedicated time-frequency resources for carrying the first request information in the 5G SIB1 configuration.

[0134] Optionally, 5G SIB1 may instruct the first request information to be carried via MSG1 or via MSG3. For example, when 5G SIB1 instructs the first request information to be carried via MSG1, the terminal may carry the first request information in MSG1. As another example, when 5G SIB1 instructs the first request information to be carried via MSG3, the terminal may carry the first request information in MSG3.

[0135] In another possible scenario, the terminal can carry the first request information through a 6G-dedicated scheduling request (SR) resource. The 5G SIB1 can carry second indication information, which indicates the 6G-dedicated SR resource, or the 6G-dedicated SR resource carrying the first request information can be predefined by the protocol.

[0136] Optionally, a wake-up signal (WUS) can be used to request the base station to transmit 6G SIB1 in the 6G cell. The WUS can be an uplink sounding reference signal (SRS), a peak-to-average power ratio (PAPR) sequence, a Zadoff-Chu (ZC) sequence, or a pseudo-random sequence (gold sequence), etc. The 5G SIB1 can carry second indication information, which can indicate the time-frequency resources carrying the WUS.

[0137] Based on the above scheme, by configuring resources carrying the first request information through 5G SIB1, the terminal is enabled to send the first request information and request the base station to send 6G SIB1 as needed, which further saves resource overhead and network energy consumption.

[0138] Based on the following embodiments, a communication device provided in this application is described. Figure 6 is a schematic block diagram of a communication device 600 provided in an embodiment of this application. This communication device 600 can correspondingly implement the functions or steps implemented by a terminal or base station in the various method embodiments described above. The communication device may include a processing unit 610 and a transceiver unit 620. Optionally, it may also include a storage unit, which can be used to store instructions (code or program) and / or data. The processing unit 610 and the transceiver unit 620 may be coupled to the storage unit. For example, the processing unit 610 can read instructions (code or program) and / or data from the storage unit to implement the corresponding method. The above-mentioned units can be set independently, or partially or completely integrated.

[0139] Optionally, the transceiver unit 620 may include a transmitting unit and a receiving unit. The transmitting unit can perform all transmitting operations performed by the communication device 600, and the receiving unit can perform all receiving operations performed by the communication device 600.

[0140] In some possible implementations, the communication device 600 can correspondingly implement the behavior and functions of the terminal, etc., in the above method embodiments. For example, the communication device 600 can be a terminal or a component (e.g., a chip or circuit) applied in the terminal. The transceiver unit 620 can be used to execute all the receiving or sending operations performed by the terminal in the embodiment shown in FIG3. For example, S301, S302 in the embodiment shown in FIG3, and / or other processes used to support the technology described herein; wherein, the processing unit 610 is used to execute all operations performed by the terminal in the embodiment shown in FIG3 except for the receiving and sending operations.

[0141] For example, transceiver unit 620 is used to receive first system information in a first cell, where the first system information is information about the first cell in a first communication standard. The first system information carries configuration information for a control channel used to schedule second system information, and the second system information is information about a second cell in a second communication standard. Processing unit 610 is used to determine the location of the control channel based on the configuration information. Transceiver unit 620 is also used to receive the control channel in the second cell. The second cell and the first cell share frequency domain resources.

[0142] In some possible implementations, the communication device 600 can correspondingly implement the behavior and functions of the base station in the above method embodiments. For example, the communication device 600 can be a base station or a component (e.g., a chip or circuit) applied in the base station. The transceiver unit 620 can be used to perform all the receive or transmit operations performed by the base station in the embodiment shown in FIG3. For example, S301, S302 in the embodiment shown in FIG3, and / or other processes used to support the technology described herein; wherein, the processing unit 610 is used to perform all operations performed by the base station in the embodiment shown in FIG3 except for the receive and transmit operations.

[0143] For example, processing unit 610 is used to generate first system information, which is information about a first cell in a first communication standard. The first system information carries configuration information for a control channel used to schedule second system information, and the second system information is information about a second cell in a second communication standard. Transceiver unit 620 is used to transmit the first system information in the first cell. Transceiver unit 620 is also used to transmit the second system information in the second cell.

[0144] For details regarding the operations performed by the processing unit 610 and the transceiver unit 620, please refer to the relevant descriptions in the foregoing method embodiments.

[0145] It should be understood that the processing unit 610 in the embodiments of this application can be implemented by a processor or processor-related circuit components, and the transceiver unit 620 can be implemented by a transceiver or transceiver-related circuit components or a communication interface.

[0146] Based on the same concept, as shown in FIG7, this application embodiment provides a communication device 700. The communication device 700 includes a processor 710. Optionally, the communication device 700 may further include a memory 720 for storing instructions executed by the processor 710, or storing input data required by the processor 710 to execute the instructions, or storing data generated after the processor 710 executes the instructions. The processor 710 can implement the method shown in the above method embodiment through the instructions stored in the memory 720.

[0147] Based on the same concept, as shown in FIG8, this application embodiment provides a communication device 800, which may be a chip or a chip system. Optionally, in this application embodiment, the chip system may be composed of chips, or may include chips and other discrete components.

[0148] The communication device 800 may include at least one processor 810 coupled to a memory, which may optionally be located within or outside the device. For example, the communication device 800 may also include at least one memory 820. The memory 820 stores computer programs, configuration information, computer programs or instructions and / or data necessary for implementing any of the above embodiments; the processor 810 may execute the computer programs stored in the memory 820 to perform the methods in any of the above embodiments.

[0149] The coupling in this embodiment is an indirect coupling or communication connection between devices, units, or modules, which can be electrical, mechanical, or other forms, used for information exchange between devices, units, or modules. The processor 810 may operate in conjunction with the memory 820. This embodiment does not limit the specific connection medium between the transceiver 830, processor 810, and memory 820.

[0150] The communication device 800 may also include a transceiver 830, through which the communication device 800 can interact with other devices. The transceiver 830 can be a circuit, a bus, a transceiver itself, or any other device capable of information interaction, also referred to as a signal transceiver unit. As shown in Figure 8, the transceiver 830 includes a transmitter 831, a receiver 832, and an antenna 833. Furthermore, when the communication device 800 is a chip-type device or circuit, the transceiver in the communication device 800 can also be an input / output circuit and / or a communication interface, capable of inputting data (or receiving data) and outputting data (or transmitting data). The processor is an integrated processor, a microprocessor, or an integrated circuit, and the processor can determine the output data based on the input data.

[0151] In one possible implementation, the communication device 800 can be applied to a terminal. Specifically, the communication device 800 can be a terminal or a device capable of supporting the terminal in implementing the functions of the terminal in any of the above embodiments. The memory 820 stores the necessary computer programs, computer programs or instructions and / or data for implementing the functions of the communication device in any of the above embodiments. The processor 810 can execute the computer programs stored in the memory 820 to complete the methods executed by the terminal in any of the above embodiments.

[0152] In one possible implementation, the communication device 800 can be applied to a base station. Specifically, the communication device 800 can be a base station or a device capable of supporting the base station in implementing the functions of the base station in any of the above embodiments. The memory 820 stores the necessary computer programs, computer programs or instructions and / or data for implementing the functions of the base station in any of the above embodiments. The processor 810 can execute the computer programs stored in the memory 820 to complete the methods executed by the base station in any of the above embodiments.

[0153] Since the communication device 800 provided in this embodiment can be applied to a terminal to complete the method executed by the terminal, or it can be applied to a base station to complete the method executed by the base station, the technical effects it can achieve can be referred to the above method embodiments, and will not be repeated here.

[0154] In the embodiments of this application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components, and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly manifested as being executed by a hardware processor, or executed by a combination of hardware and software modules within the processor.

[0155] In the embodiments of this application, the memory can be non-volatile memory, such as a hard disk or solid-state drive, or it can be volatile memory, such as random-access memory (RAM). The memory can also be any other medium capable of carrying or storing desired program code in the form of instructions or data structures, and accessible by a computer, but is not limited thereto. The memory in the embodiments of this application can also be a circuit or any other device capable of implementing storage functions, used to store computer programs, computer program or instruction and / or data.

[0156] Based on the above embodiments, referring to FIG9, this application embodiment also provides another communication device 900, including: an input / output interface 910 and a logic circuit 920; the input / output interface 910 is used to receive code instructions and transmit them to the logic circuit 920; the logic circuit 920 is used to run the code instructions to execute the method executed by the terminal or base station in any of the above embodiments.

[0157] Optionally, the input / output interface 910 can be an on-chip interface, and the logic circuit 920 can be one or more processors. Optionally, the one or more processors can be located within the device or outside the device.

[0158] The following provides a detailed description of the operations performed by this communication device when applied to a terminal or base station.

[0159] In one alternative implementation, the communication device 900 can be applied to a terminal to execute the methods performed by the terminal, specifically, for example, the methods performed by the terminal in the embodiment shown in FIG3 above.

[0160] For example, input / output interface 910 is used to receive first system information in a first cell, where the first system information is information about the first cell in a first communication standard. The first system information carries configuration information for a control channel used to schedule second system information, where the second system information is information about a second cell in a second communication standard. Logic circuit 920 is used to determine the location of the control channel based on the configuration information. Input / output interface 910 is also used to receive the control channel in the second cell. The second cell and the first cell share frequency domain resources.

[0161] Since the communication device 900 provided in this embodiment can be applied to a terminal to complete the method executed by the terminal described above, the technical effects it can achieve can be referred to the above method embodiment, and will not be repeated here.

[0162] In one optional implementation, the communication device 900 can be applied to a base station to execute the methods performed by the base station, specifically, for example, the methods performed by the base station in the embodiment shown in FIG3 above.

[0163] For example, logic circuit 920 is used to generate first system information, which is information about a first cell in a first communication standard. The first system information carries configuration information for a control channel used to schedule second system information, which is information about a second cell in a second communication standard. Input / output interface 910 is used to transmit the first system information in the first cell. Input / output interface 910 is also used to transmit the second system information in the second cell.

[0164] Since the communication device 900 provided in this embodiment can be applied to a base station to complete the method executed by the base station described above, the technical effects it can achieve can be referred to the above method embodiment, and will not be repeated here.

[0165] Based on the above embodiments, this application also provides a communication system. This communication system includes at least one communication device applied to a terminal and at least one communication device applied to a base station. The technical effects obtained can be referred to the above method embodiments, and will not be repeated here.

[0166] Based on the above embodiments, this application also provides a system. The communication system includes at least one base station and a terminal.

[0167] Based on the above embodiments, this application also provides a computer-readable storage medium storing a computer program or instructions. When the instructions are executed, the method executed by the terminal or the method executed by the base station in any of the above embodiments is implemented. The computer-readable storage medium may include various media capable of storing program code, such as a USB flash drive, portable hard drive, read-only memory, random access memory, magnetic disk, or optical disk.

[0168] To achieve the functions of the communication devices shown in Figures 6 to 9, this application embodiment also provides a chip, including a processor, for supporting the communication device in implementing the functions involved in the terminal or base station in the above method embodiments. In one possible design, the chip is connected to a memory or the chip includes a memory for storing necessary computer programs, instructions, and data for the communication device.

[0169] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0170] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer programs or instructions. These computer programs or instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more blocks of the flowchart illustrations and / or one or more blocks of the block diagrams.

[0171] These computer programs or instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more block diagrams.

[0172] These computer programs or instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

Claims

1. A method for transmitting system information, characterized in that, include: The system receives first system information in a first cell, which is information about the first cell in a first communication standard; wherein the first system information carries configuration information of a control channel for scheduling second system information, and the second system information is information about a second cell in a second communication standard, which is different from the first communication standard. Based on the configuration information, the control channel is received in the second cell; wherein the second cell and the first cell share frequency domain resources.

2. The method according to claim 1, characterized in that, The first system information also includes one or more of the following: The subcarrier spacing of the second cell, the time-domain position of the pre-demodulation reference signal of the physical downlink shared channel carrying the information of the second system, the cell prohibition information of the second cell, the co-frequency cell reselection information of the second cell, or the timing offset between the second cell and the first cell.

3. The method according to claim 1 or 2, characterized in that, The configuration information includes information on the time-domain resources and / or frequency-domain resources of the control channel used for scheduling the second system information.

4. The method according to any one of claims 1 to 3, characterized in that, The configuration information includes the time-domain resource offset between the control channel used for scheduling the second system information and the control channel used for scheduling the first system information; and / or, The configuration information includes the frequency domain resource offset between the control channel used for scheduling the second system information and the control channel used for scheduling the first system information.

5. The method according to any one of claims 1 to 4, characterized in that, The first system information also carries first indication information, which indicates that the second cell and the first cell share frequency domain resources.

6. The method according to any one of claims 1 to 5, characterized in that, The first system information also includes second indication information, which is used to indicate the time-frequency resources carrying the first request information, and the first request information is used to request the sending of the second system information.

7. The method of claim 6, wherein, The first request information is carried in message 1 or message 3 during the random access procedure.

8. The method of claim 7, wherein, When the first request information is carried in message 1, the second indication information is also used to indicate the sequence adopted by the first request information.

9. A method of transmission of system information, characterized in that, include: First system information is transmitted in the first cell, which is the information of the first cell in the first communication standard; wherein, the first system information carries configuration information of the control channel for scheduling the second system information, and the second system information is the information of the second cell in the second communication standard, which is different from the first communication standard; In the second cell, a control channel is used to send and schedule information for the second system.

10. The method of claim 9, wherein, The first system information also includes one or more of the following: The subcarrier spacing of the second cell, the time-domain position of the pre-demodulation reference signal of the physical downlink shared channel carrying the information of the second system, the cell prohibition information of the second cell, the co-frequency cell reselection information of the second cell, or the timing offset between the second cell and the first cell.

11. The method according to claim 9 or 10, characterized in that, The configuration information includes information on the time-domain resources and / or frequency-domain resources of the control channel used for scheduling the second system information.

12. The method of any one of claims 9-11, wherein, The configuration information includes the time-domain resource offset between the control channel used for scheduling the second system information and the control channel used for scheduling the first system information; and / or, The configuration information includes the frequency domain resource offset between the control channel used for scheduling the second system information and the control channel used for scheduling the first system information.

13. The method according to any one of claims 9 to 12, characterized in that, The first system information also carries first indication information, which indicates that the second cell and the first cell share frequency domain resources.

14. The method according to any one of claims 9 to 13, characterized in that, The first system information also includes second indication information, which is used to indicate the time-frequency resources carrying the first request information, and the first request information is used to request the sending of the second system information.

15. The method according to claim 14, characterized in that, The first request information is carried in message 1 or message 3 during the random access procedure.

16. The method according to claim 15, characterized in that, When the first request information carries message 1 in the random access procedure, the second indication information is also used to indicate the sequence adopted by the first request information.

17. A communication device, characterized in that, The device includes a processor coupled to a memory for storing programs or instructions that, when executed by the processor, cause the device to perform the method as claimed in any one of claims 1 to 8, or cause the device to perform the method as claimed in any one of claims 9 to 16.

18. A computer program product, characterized in that, Includes computer instructions that, when executed on a communication device, cause the communication device to perform the method as described in any one of claims 1 to 8, or cause the communication device to perform the method as described in any one of claims 9 to 16.

19. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed on the communication device, cause the communication device to perform the method as described in any one of claims 1 to 8, or cause the communication device to perform the method as described in any one of claims 9 to 16.

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