Communication method and device

Abstract

A communication method and apparatus, relating to the field of communication technology, helps to enable network equipment to achieve the purpose of supporting communication of new terminal equipment without having to send an additional complete set of system information. Specifically, the method includes: the network equipment sends SIB1 and supplementary information; wherein, the maximum transmission bandwidth of the first terminal device is different from that of the second terminal device; the supplementary information includes the first information and / or the second information, SIB1 does not include the first information, and the parameter value of the second information included in the supplementary information is different from the parameter value of the second information included in SIB1. After receiving SIB1 and the supplementary information, the second terminal device accesses the network based on the partial information and supplementary information in SIB1 except the second information. The technical solution provided by the present application can save resource consumption of downlink transmission.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to a communication method and device. Background Art

[0002] In new radio (NR), base stations broadcast system information block 1 (SIB1), which contains the system information required to access the network. Therefore, terminal devices such as smartphones and tablets can receive SIB1 and access the network based on the system information in SIB1, enabling communication between the terminal device and the base station. However, for new terminal devices such as machine type communication (MTC) terminals and Internet of Things (IoT) devices, the system information required to access the network is likely to be different from that required by terminal devices such as smartphones. Therefore, they cannot access the network based on SIB1, resulting in the current NR not supporting communication with new terminal devices. Summary of the Invention

[0003] The present application provides a communication method and apparatus, which eliminates the need for network devices to send a complete set of system information to instruct new terminal devices (such as MTC terminals, IoT devices, terminals with reduced capabilities, etc.) to communicate, thereby improving the resource utilization of the communication system.

[0004] In the first aspect, an embodiment of the present application provides a communication method, specifically including: a network device sends SIB1 and supplementary information; wherein, SIB1 includes access configuration information of a first terminal device and / or scheduling information of other system information blocks; the supplementary information is used to indicate access of a second terminal device, and the maximum transmission bandwidth of the first terminal device is different from that of the second terminal device; the supplementary information includes at least one of the first information and the second information, SIB1 does not include the first information, and the parameter value of the second information included in the supplementary information is different from the parameter value of the corresponding second information in SIB1.

[0005] After receiving SIB1 and the supplementary information, the second terminal device accesses the network according to SIB1 and the supplementary information.

[0006] In the embodiment of the present application, the network device transmits SIB1 and supplementary information, allowing the second terminal device to access the network based on the SIB1 and supplementary information, thereby achieving the purpose of supporting the second terminal device without affecting the communication support of the first terminal device. Moreover, the supplementary information may not include information used by the second terminal device and included in the SIB1, thus helping to save downlink resource overhead compared to sending a complete new SIB1.

[0007] It should be noted that the first information or the second information can be understood as information that the second terminal device needs to apply and is not included in SIB1, or information that the second terminal device needs to apply and is different from information included in SIB1.

[0008] In one possible design, the supplementary information further includes first indication information, and the first indication information is used to instruct the second terminal device not to apply the third information in SIB1. In this case, for example, the second terminal device accesses the network based on the partial information and supplementary information in SIB1 except the second information and the third information.

[0009] Since the supplementary information includes the first indication information, it helps the second terminal device to easily determine which information in SIB1 should not be applied.

[0010] In one possible design, the supplementary information further includes second indication information, and the second indication information is used to instruct the second terminal device to apply the fourth information in SIB 1. In this case, for example, the second terminal device accesses the network according to the fourth information and the supplementary information in SIB 1.

[0011] Since the supplementary information includes the second indication information, it helps the second terminal device to easily determine which information in SIB1 to apply.

[0012] In one possible design, the second information includes random access configuration information of the second terminal device, and / or the second information includes scheduling information of other system information blocks of the second terminal device.

[0013] In one possible design, the first information includes time domain resource indication information, where the time domain resource indication information is used to indicate valid time domain resources for the second terminal device to receive and / or send information. The valid time domain resources are a subset of the time domain resources for the first terminal device to receive or send information. This facilitates the second terminal device to identify which time domain resources can be used to receive and / or send information, thereby preventing the second terminal device's receipt and / or transmission of information from affecting the first terminal device's receipt and / or transmission of information.

[0014] In one possible design, the supplementary information is sent via SIB1. The above technical solution eliminates the need to change the existing SIB1 scheduling method; instead, the supplementary information needs to be added to SIB1. While this increases the payload compared to the existing SIB1, it requires minimal changes to the existing wireless communication system's communication methods, simplifying the implementation of sending the supplementary information.

[0015] In one possible design, the transmission resources for the supplemental information are predefined. This technical solution eliminates the need to change the existing SIB1 scheduling method, requiring minimal changes to the existing wireless communication system's communication methods, thereby simplifying the implementation of the supplemental information transmission. Furthermore, this technical solution also maintains the size of the SIB1 payload, thereby helping to minimize the impact of the supplemental information transmission on the SIB1 transmission.

[0016] In one possible design, the transmission resources for the supplementary information are scheduled using first resource indication information, and the transmission resources for SIB1 are scheduled using second resource indication information. The first resource indication information and the second resource indication information are carried in the first downlink control information. With the above technical solution, the supplementary information and SIB1 can be scheduled using the same downlink control information, which simplifies the implementation of scheduling the supplementary information and helps improve the flexibility of scheduling the supplementary information.

[0017] In one possible design, the transmission resources for the supplementary information are scheduled using first resource indication information, and the transmission resources for SIB1 are scheduled using second resource indication information. The first resource indication information is carried in the first downlink control information, and the second resource indication information is carried in the second downlink control information. With the above technical solution, the supplementary information and SIB1 can be scheduled separately using two different downlink control information, which can simplify the impact of scheduling the supplementary information on scheduling SIB1 and help improve the flexibility of scheduling the supplementary information.

[0018] In one possible design, the second terminal device is an Internet of Things terminal, a machine type communication terminal, or a terminal with reduced capabilities.

[0019] In a second aspect, an embodiment of the present application provides a communication device, which includes a processor and a communication interface.

[0020] The processor is configured to control or trigger the communication interface to send SIB1 and supplementary information. The communication interface is configured to send SIB1 and supplementary information.

[0021] In one possible design, the communication device may further include a memory for storing program instructions and data. The memory is coupled to the processor, and when the processor executes the program instructions stored in the memory, it is used to control or trigger the communication interface to send SIB1 and supplementary information.

[0022] The communication interface is used for the apparatus to communicate with other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module or other type of communication interface, and the other devices may be network devices or terminal devices.

[0023] In a third aspect, an embodiment of the present application provides another communication device, comprising a processing module and a transceiver module. The processing module is configured to control or trigger the transceiver module to send SIB1 and supplementary information. The transceiver module is configured to send SIB1 and supplementary information.

[0024] In a fourth aspect, an embodiment of the present application provides another communication device, comprising a processor and a communication interface. The communication interface is configured to receive SIB1 and supplementary information. The processor is configured to access a network based on the SIB1 and the supplementary information.

[0025] In one possible design, the communication device may further include a memory for storing program instructions and data. The memory is coupled to the processor, and when the processor executes the program instructions stored in the memory, it is used to access the network according to SIB1 and the supplementary information.

[0026] The communication interface is used for the apparatus to communicate with other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module or other type of communication interface, and the other devices may be network devices or terminal devices.

[0027] In a fifth aspect, an embodiment of the present application provides another communication device, comprising a processing module and a transceiver module, wherein the transceiver module is configured to receive SIB1 and supplementary information, and the transceiver processing module is configured to access a network based on the SIB1 and supplementary information.

[0028] It should be noted that, for the relevant introduction about SIB1 and supplementary information in the second to fourth aspects and any possible design of the communication device, please refer to the relevant introduction in the first aspect, which will not be repeated here.

[0029] In a sixth aspect, an embodiment of the present application also provides a computer-readable storage medium comprising instructions, which, when executed on a computer, enables the computer to execute the steps executed by the network device in the first aspect and any possible design of the first aspect, or the steps executed by the second terminal device.

[0030] In the seventh aspect, an embodiment of the present application also provides a chip, which includes a processor, a communication interface and a memory, and is used to implement the steps performed by the network device in the first aspect and any possible design of the first aspect, or the steps performed by the second terminal device.

[0031] In the eighth aspect, an embodiment of the present application also provides a computer program product, including instructions, which, when running on a computer, enables the computer to execute the steps executed by the network device in the first aspect and any possible design of the first aspect, or the steps executed by the second terminal device.

[0032] In addition, the technical effects brought about by any possible design method in the second to eighth aspects can be referred to the technical effects brought about by different design methods in the method part, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1a A schematic diagram of a SIB1 transmission resource according to an embodiment of the present application;

[0034] Figure 1b This is a schematic diagram of another SIB1 transmission resource according to an embodiment of the present application;

[0035] Figure 1c This is a schematic diagram of another SIB1 transmission resource according to an embodiment of the present application;

[0036] Figure 1d This is a schematic diagram of another SIB1 transmission resource according to an embodiment of the present application;

[0037] Figure 2 A network architecture diagram of a communication system according to an embodiment of the present application;

[0038] Figure 3 This application is a flow chart of a communication method according to an embodiment;

[0039] Figure 4 A schematic diagram of the structure of a wireless frame according to an embodiment of the present application;

[0040] Figure 5 A schematic diagram of supplementary information and SIB1 according to an embodiment of the present application;

[0041] Figure 6 This is a schematic structural diagram of a communication device according to an embodiment of the present application;

[0042] Figure 7 This is a structural diagram of another communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0043] It should be understood that in the embodiments of the present application, "at least one" refers to one or more. "Multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. Among them, A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can represent seven situations: a, b, c, a and b, a and c, b and c, or a, b and c. Among them, each of a, b, and c can be an element itself, or a set containing one or more elements.

[0044] Throughout this application, the terms "exemplary," "in some embodiments," and "in other embodiments" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "exemplary" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the word "exemplary" is intended to present concepts in a concrete manner.

[0045] In this application, "of" and "corresponding" may sometimes be used interchangeably. It should be noted that when the distinction is not emphasized, the meanings they intend to express are consistent. In the embodiments of this application, "communication" and "transmission" may sometimes be used interchangeably. It should be noted that when the distinction is not emphasized, the meanings they intend to express are consistent. For example, transmission may include sending and / or receiving, and may be a noun or a verb.

[0046] It should be pointed out that the words "first", "second", etc. involved in the embodiments of the present application are only used for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order.

[0047] Wireless communication systems generally support communication with traditional terminal devices such as mobile phones and tablets. Specifically, network devices can broadcast system information clock 1 (SIB1), which includes system information required for accessing the network, so that terminal devices can access the network according to the system information in SIB1 and achieve communication. However, for new terminal devices such as machine type communication (MTC) terminals, Internet of Things (IoT) devices, and lightweight terminals, since the transmission characteristics of new terminal devices are different from those of traditional terminal devices, for example, lower transmission capacity, slower movement speed, or poor coverage, and SIB1 is configured by network devices based on the transmission characteristics of traditional terminal devices, new terminal devices cannot access the network according to SIB1, resulting in the wireless communication system being unable to support communication with new terminal devices.

[0048] In LTE, in order to support MTC terminal communications without affecting the communications of traditional terminal devices, network devices, in addition to sending SIB1 to traditional terminal devices, also send a bandwidth-reduced (BR) SIB1 (abbreviated as SIB1-BR) to MTC terminals. Among them, SIB1-BR can have the same structure as SIB1, but the specific internal parameter values may be different. In other words, in LTE, the network device is equivalent to sending two complete sets of SIB1, which can easily lead to high downlink resource overhead.

[0049] In NR, network devices can send synchronization signal blocks (SSBs) in different beam directions to obtain transmit beam gain in different directions and increase coverage. The SSBs sent in different beam directions are different. Each SSB corresponds to a control resource set (CORESET) that carries the DCI for scheduling SIB1, so that the terminal device can receive SIB1 on the corresponding downlink resources according to the DCI for scheduling SIB1. The CORESET corresponding to an SSB is often indicated by the pdcch-ConfigSIB1 information included in the MIB in the SSB. In other words, the network device needs to send SIB1 on the downlink resources indicated by each DCI for scheduling SIB1. It should be noted that in a time slot, the downlink resources indicated by the DCI for scheduling SIB1 in the CORESETs corresponding to different SSBs can be the same or different, which is determined by the network device. However, the content of SIB1 carried on the downlink resources indicated by the DCI for scheduling SIB1 in the CORESETs corresponding to different SSBs is the same.

[0050] For example, taking the SSBs sent for different beam directions in NR as SSB0, SSB1, SSB2 and SSB3 as an example, in one slot, the CORESET corresponding to SSB0 and the downlink resources indicated by the DCI for scheduling SIB1 carried on the CORESET corresponding to SSB0 are as follows: Figure 1a As shown, the CORESET corresponding to SSB1 and the downlink resources indicated by the DCI for scheduling SIB1 carried on the CORESET corresponding to SSB1 are as follows Figure 1b As shown, the CORESET corresponding to SSB2 and the downlink resources indicated by the DCI for scheduling SIB1 carried on the CORESET corresponding to SSB2 are as follows Figure 1c As shown, the CORESET corresponding to SSB3 and the downlink resources indicated by the DCI for scheduling SIB1 carried on the CORESET corresponding to SSB3 are as follows Figure 1d shown.

[0051] Generally speaking, when the SIB1 payload size remains unchanged, the more downlink resources used to transmit SIB1, the lower the transmission code rate that can be used, thereby improving the reliability of transmission and decoding; similarly, when the downlink resources used to transmit SIB1 remain unchanged, the smaller the SIB1 payload, the lower the transmission code rate and the higher the decoding reliability. In NR, SIB1 is usually sent on the initial bandwidth part (initial BWP), that is, the downlink resources indicated by the DCI for scheduling SIB1 carried on the CORESET corresponding to the SSB do not exceed the bandwidth range of the initial BWP in the frequency domain. Among them, the SIB1 payload can be up to nearly 3000 bits. For the initial BWP with a bandwidth of 5MHz, in order to ensure a more reliable code rate, the frequency domain resources occupied by SIB1 in a slot may need to occupy the bandwidth of the entire initial BWP.

[0052] Therefore, if the network equipment in NR sends a new SIB1 (such as SIB1-light or SIB1-MTC) to new terminal devices in addition to sending SIB1 to traditional terminal devices to support the access and communication of new terminal devices, it is easy to cause the overhead of downlink resources to increase exponentially, affecting the communication of traditional terminal devices.

[0053] In view of this, an embodiment of the present application provides a communication method, which sends information applied by new terminal devices and not included in SIB1 in addition to sending SIB1 to traditional terminal devices, so that network devices do not need to send a complete new SIB1 to achieve the purpose of supporting communication of new terminal devices while supporting communication of traditional terminal devices. Compared with sending a complete new SIB1, it helps to save downlink resource overhead.

[0054] The following explains some of the terms used in the embodiments of the present application to facilitate understanding by those skilled in the art.

[0055] 1. Network equipment. The network equipment in the embodiment of the present application is a device that provides wireless communication functions for terminal devices, and may also be referred to as a radio access network (RAN) device, etc. Network equipment includes but is not limited to: next generation base stations (next generation nodeB, gNB) in 5G, evolved node B (evolved node B, eNB), baseband units (baseband unit, BBU), transmitting and receiving points (transmitting and receiving point, TRP), transmitting points (transmitting point, TP), relay stations, access points, etc. The network equipment can also be a wireless controller, a centralized unit (CU), a distributed unit (DU), etc. in a cloud radio access network (CRAN) scenario. Among them, the network equipment can support at least one wireless communication technology, such as NR, LTE, etc.

[0056] 2. First terminal device. In the embodiment of the present application, the first terminal device is a device with wireless transceiver functions, which can be called a traditional terminal device, an ordinary terminal device, a terminal, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc. The specific form of the first terminal device can be a mobile phone, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wearable device, a tablet computer (pad), a desktop computer, a laptop computer, an all-in-one computer, a vehicle-mounted terminal, a wireless local loop (WLL) station, a personal digital assistant (PDA), etc. The first terminal device can be applied to the following scenarios: virtual reality (VR), augmented reality (AR), industrial control (industrial control), self-driving, etc. The first terminal device can be fixed or mobile. It should be noted that the first terminal device can support at least one wireless communication technology, such as NR, LTE, etc.

[0057] 3. Second terminal device. In the embodiment of the present application, the second terminal device is also a device with wireless transceiver functions, which can be called a new terminal device, a new UE, etc. The specific form of the second terminal device can be a terminal with reduced capability (also called a low-capability terminal, such as NR-light terminal, Reduced Capability NR Devices, etc.), an Internet of Things terminal (such as an IoT device), a machine type communication terminal (such as an MTC device), etc. It should be noted that in the embodiment of the present application, the terminal with reduced capability can also be called a lightweight terminal. The second terminal device can be applied to the following scenarios: smart grid, smart city, smart home, industrial sensor network, sports and fitness, etc. The second terminal device can be fixed or mobile. It should be noted that the second terminal device can support at least one wireless communication technology, such as NR, LTE, etc.

[0058] It should be noted that the transmission characteristics of the first terminal device are different from the transmission characteristics of the second terminal device. For example, the transmission characteristics of the first terminal device are different from the transmission characteristics of the second terminal device, which can be understood as: there is at least one transmission performance parameter that is different between the first terminal device and the second terminal device. For example, the maximum transmission bandwidth of the first terminal device is different from the maximum transmission bandwidth of the second terminal device, and / or the peak rate of the first terminal device is different from the peak rate of the second terminal device. For example, the maximum transmission bandwidth of the first terminal device is 100MHz, while the maximum transmission bandwidth of the second terminal device is 20MHz or 5MHz; for another example, the peak rate of the first terminal device is 500MHz / s, while the peak rate of the second terminal device is 50Mbps or 10bps.

[0059] 4. SIB1. In the embodiment of the present application, SIB1 includes the access configuration information of the first terminal device and / or the scheduling information of other system information blocks (such as SIB2, SIB3, etc.). For example, SIB1 or other system information blocks (such as SIB2, SIB3, etc.) can be carried on the physical downlink shared channel (PDSCH). The network device can carry the DCI for scheduling SIB1 on the CORESET corresponding to the SSB. Among them, the CORESET corresponding to the SSB can be indicated to the first terminal device and / or the second terminal device by the network device through the master information block (MIB) in the SSB. The MIB is usually carried on the physical broadcast channel (PBCH). For example, the CORESET corresponding to the SSB can be CORESET0. In addition, the SSB can also include a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). PSS and SSS can be used for synchronization of the first terminal device and / or the second terminal device.

[0060] For example, the information included in SIB1 may be as shown in Table 1.

[0061] Table 1

[0062]

[0063]

[0064] It should be noted that Table 1 is only an exemplary description of the information included in SIB1 and does not constitute a limitation on the information included in SIB1. In addition, SIB1 may also include other information in addition to the information involved in Table 1, for example, extended discontinuous reception (eDRX) permission information, superframe number, etc., without limitation. In addition, it should be noted that the terminal devices involved in Table 1 may include a first terminal device and / or a second terminal device.

[0065] 5. Transmission resources. In the embodiments of the present application, transmission resources may include time domain resources and / or frequency domain resources. Time domain resources and frequency domain resources may be referred to as time-frequency resources. For example, the transmission resources of SIB1 may be understood as downlink resources that carry SIB1, i.e., downlink time-frequency resources used by a network device when transmitting SIB1.

[0066] 6. Time domain resources. In the embodiment of the present application, the time domain resources may include one or more time units. For example, communication between the network device and the first terminal device, or between the network device and the second terminal device, or between the first terminal device and the first terminal device, or between the first terminal device and the second terminal device, or between the second terminal device and the second terminal device is carried out in time units. The time unit may be a radio frame, a subframe, a slot, a micro-slot, a mini-slot, or a symbol, etc. It should be noted that in the embodiment of the present application, the duration of different time units may be the same or different, and there is no limitation on this. For example, different subcarrier spacings correspond to time units of different durations. Take the time unit as a time slot as an example. For example, when the subcarrier spacing is 15kHz, the duration of a time slot may be 1ms; when the subcarrier spacing is 30kHz, the duration of a time slot may be 0.5ms.

[0067] The embodiments of the present application can be applied to NR communication systems, LTE communication systems, or other communication systems, such as future mobile communication systems (such as 6G communication systems). Figure 2 , which is a schematic diagram of a network architecture of a communication system according to an embodiment of the present application, includes a network device, terminal device 01, terminal device 02, terminal device 03, terminal device 04, terminal device 05, terminal device 06, terminal device 07, and terminal device 08. Terminal device 01, terminal device 03, terminal device 05, and terminal device 07 are first terminal devices, and terminal device 02, terminal device 04, terminal device 06, and terminal device 08 are second terminal devices.

[0068] Among them, Figure 2 In the communication system shown, terminal device 03, terminal device 05, and terminal device 06 can also form a communication system, in which terminal device 03 can send downlink information to terminal device 05 and terminal device 06. The communication method of the embodiment of the present application can also be applied to the communication system composed of terminal device 03, terminal device 05, and terminal device 06. In the communication system composed of terminal device 03, terminal device 05, and terminal device 06, terminal device 03 can be regarded as a network device, terminal device 05 is a first terminal device, and terminal device 06 is a second terminal device. Similarly, the embodiment of the present application can also be applied to a communication system composed of terminal device 04, terminal device 07, and terminal device 08.

[0069] It should be understood that Figure 2The network architecture of the communication system shown is only an example and does not limit the network architecture of the communication system in the embodiment of the present application. The embodiment of the present application does not limit the number of network devices, the number of first terminal devices, and the number of second terminal devices in the communication system. For example, when the communication system of the embodiment of the present application includes multiple network devices, multi-point coordinated communication can be performed between the network devices. For example, the communication system includes multiple macro base stations and multiple micro base stations, wherein multi-point coordinated communication can be performed between macro base stations and macro base stations, micro base stations and micro base stations, and macro base stations and micro base stations.

[0070] It should be noted that, in the embodiment of the present application, the network device and the first terminal device, the network device and the second terminal device, the first terminal device and the first terminal device, the first terminal device and the second terminal device, or the second terminal device and the second terminal device can communicate through a licensed spectrum (licensed spectrum), or can communicate through an unlicensed spectrum (unlicensed spectrum), or can communicate through both a licensed spectrum and an unlicensed spectrum at the same time, and there is no limitation on this. The network device and the first terminal device, the network device and the second terminal device, the first terminal device and the first terminal device, the first terminal device and the second terminal device, or the second terminal device and the second terminal device can communicate through a spectrum below 6 gigahertz (GHz), or can communicate through a spectrum above 6 GHz, or can use a spectrum below 6 GHz and a spectrum above 6 GHz at the same time. That is, the present application is applicable to both low-frequency scenarios (such as sub 6G) and high-frequency scenarios (above 6G).

[0071] by Figure 2 Taking the network architecture of the communication system shown in FIG. 1 as an example, the communication method of an embodiment of the present application is introduced in detail.

[0072] For example, Figure 3 As shown, a communication method according to an embodiment of the present application specifically includes the following steps.

[0073] Step 301: The network device sends SIB1 and supplementary information. The supplementary information is used to instruct a second terminal device to access, wherein the supplementary information includes: information that indicates application of the second terminal device and is not included in SIB1.

[0074] Specifically, the information applied by the second terminal device and not included in SIB1 may include at least one of the first information and the second information, wherein SIB1 does not include the first information, and the parameter value corresponding to the second information in SIB1 is different from the parameter value of the second information included in the supplementary information.

[0075] Among them, the first information can be understood as information that is not included in SIB1 but is required for the second terminal device to access. For example, when sending and / or receiving information, the second terminal device may not be able to use certain time domain resources available to the first terminal device. For example, in order to avoid the transmission of the second terminal device from adversely affecting the transmission of the first terminal device, the second terminal device should avoid using high-load time domain resources among the available time domain resources of the first terminal device, that is, the high-load time domain resources among the available time domain resources of the first terminal device are unavailable to the second terminal device. However, SIB1 does not include information indicating which time domain resources are available or unavailable to the second terminal device. Therefore, the first information may include time domain resource indication information. The time domain resource indication information is used to indicate the effective time domain resources for the second terminal device to send and / or receive information. By indicating the effective time domain resources for the second terminal device to send and / or receive information, unnecessary transmission can be reduced, energy consumption can be saved, and the transmission of the second terminal device can be prevented from adversely affecting the transmission of the first terminal device. For example, the effective time domain resources can be a subset of the time domain resources for the first terminal device to receive and / or send information.

[0076] It should be noted that the time domain resource indication information may also be referred to as a valid time domain resource indication (validtimeresourseinfo) or a valid time slot indication (validSlotLight), etc., and this is not limited.

[0077] For example, the time domain resource indication can be indicated in the form of a bitmap. Taking the time domain resource for receiving and / or sending information by the first terminal device as the first time domain resource as an example, for example, the first time domain resource can be a radio frame, or N time units included in a radio frame. N is a positive integer. For example, taking the first time resource as radio frame i and the time unit as a time slot as an example, Figure 4As shown, the radio frame i includes time slots 1 to 10, and the first terminal device can use time slots 1 to 10 in the radio frame i to receive and / or send information. If the valid time domain resources are time slots 3 to 5, the second terminal device can use time slots 3 to 5 in the radio frame i to receive and / or send information. For example, when the second terminal device can use a certain time slot in the radio frame i to receive and / or send information, it can be indicated by a bit value of 1. When the second terminal device cannot use a certain time slot in the radio frame i to receive and / or send information, it can be indicated by a bit value of 0. The time domain resource indication can be 0011100000, indicating the valid time domain resources in the radio frame i. For example, in an embodiment of the present application, the duration of a radio frame can be 10ms, and the number of time slots included in a radio frame is different for different subcarrier spacings. For example, for a subcarrier spacing of 15kHz, a radio frame includes 10 time slots; and for a subcarrier spacing of 30kHz, a radio frame includes 20 time slots. In the case where the radio frame i includes 20 time slots, the time domain resource indication may indicate the valid time domain resource through a 20-bit value.

[0078] The above is only an exemplary description of a time domain resource indication. The embodiments of the present application may also indicate valid time domain resources in other ways, which is not limited to this.

[0079] It is understandable that Figure 4 In the example, time slots 3 to 5 are a subset of time domain resources of wireless frame i.

[0080] It should be noted that, in the embodiment of the present application, the information received and / or sent by the second terminal device using effective time domain resources may be data, control information, or system information, etc., and there is no limitation on this.

[0081] Specifically, the second information can be understood as information required by both the first terminal device and the second terminal device when accessing, but the parameter values of the information used by the first terminal device and the second terminal device when accessing are different. That is, the information included in SIB1 and the supplementary information has the same meaning but different parameter values. For example, when the transmission mode or transmission content of other system information blocks in the second terminal device is different from the transmission mode or transmission content of other system information blocks in the first terminal device, the second information may include scheduling information of other system information blocks. Among them, the scheduling information of other system information blocks in the supplementary information is the scheduling information of other system information blocks of the second terminal device, and SIB1 also includes scheduling information of other system information blocks, which is the scheduling information of other system information blocks of the first terminal device, wherein the parameter value of the scheduling information of other system information blocks of the second terminal device is different from the parameter value of the scheduling information of other system information blocks of the first terminal device.

[0082] As another example, when the random access method of the second terminal device, or the resources or configuration used for random access, etc., are different from the random access method of the first terminal device, or the resources or configuration used for random access, etc., the second information may include random access configuration information. The random access configuration information in the supplementary information is the random access configuration information of the second terminal device, and SIB1 also includes random access configuration information, which is the random access configuration information of the first terminal device, wherein the parameter value of the random access configuration information of the second terminal device is different from the parameter value of the random access configuration information of the first terminal device. For example, the random access configuration information may be a random access configuration index, and the random access configuration index in the supplementary information is used to indicate the time domain resources and format for sending the random access pilot by the second terminal device.

[0083] Among them, when the second terminal device receives SIB1 and the supplementary information, it uses the parameter value of the second information in the supplementary information to perform corresponding communication or configuration, and may ignore the parameter value of the second information in SIB1. When the first terminal device receives SIB1, it uses the parameter value of the second information in SIB1 to perform corresponding communication or configuration; even if the first terminal device receives SIB1 and the supplementary information, it will ignore the parameter value of the second information in the supplementary information.

[0084] In other embodiments, the second terminal device may not support some services supported by the first terminal device. Therefore, some information included in SIB1 is not necessary for the second terminal device. For example, in an embodiment of the present application, the network device may indicate to the second terminal device explicitly or implicitly which information in SIB1 the second terminal device does not apply. In one possible implementation, the network device explicitly indicates to the second terminal device which information in SIB1 is not applied. Specifically, the network device indicates to the second terminal device by adding first indication information in the supplementary information. That is, the supplementary information may also include the first indication information. For example, the first indication information is used to indicate that the second terminal device does not apply the third information in SIB1. For example, the network device may indicate that the second terminal device does not inherit the fourth information in SIB1 through a bit in the supplementary information. For example, for parameters not defined in the supplementary information, the network device may indicate to the second terminal device through the first indication information that the information of the corresponding parameter in SIB1 does not apply.

[0085] For example, the first terminal device may support two sets of RF modules with different frequencies to perform uplink transmission on the cell carrier and the supplementary carrier. However, due to cost and complexity constraints, the second terminal device may not support two sets of RF modules. Therefore, the third information may include supplementary uplink configuration information (supplementaryUplink) in SIB1, where the parameter value of the supplementary uplink configuration information is used to indicate the supplementary uplink carrier.

[0086] In another possible implementation, when the network device implicitly indicates to the second terminal device that the second terminal device does not apply the third information in SIB1, specifically, the first indication information may not be included in the supplementary information. For example, through a predefined method, when the supplementary information does not include the first indication information, the second terminal device may directly ignore or discard the third information in SIB1.

[0087] In addition, in an embodiment of the present application, the network device may explicitly or implicitly indicate to the second terminal device which information in SIB1 the second terminal device applies. In one possible implementation, the network device explicitly indicates to the second terminal device which information in SIB1 the second terminal device applies. Specifically, the network device indicates to the second terminal device by adding second indication information in the supplementary information. That is, the supplementary information may also include the second indication information. For example, the second indication information is used to indicate that the second terminal device applies the fourth information in SIB1. For example, the fourth information may include information related to the characteristics of the cell itself in SIB1, such as information numbered 1, 2, and 3 in Table 1, or information related to the characteristics of the cell itself included in information numbered 5, such as cell TDD configuration information. Since the information related to the characteristics of the cell itself is not related to the services and transmission characteristics supported by the second terminal device, the second terminal device may also use the fourth information in SIB1.

[0088] For example, the network device may instruct the second terminal device to inherit the fourth information in SIB1 through a bit in the supplementary information. For example, for parameters not defined in the supplementary information, the network device may instruct the second terminal device to apply the corresponding parameter information in SIB1 through the second indication information.

[0089] In another possible implementation, when the network device implicitly instructs the second terminal device to apply the fourth information in SIB1, the second terminal device may not include the second indication information in the supplementary information. For example, in a predefined manner, when the supplementary information does not include the second indication information, the second terminal device may directly obtain the fourth information from SIB1 according to its own needs.

[0090] It should be noted that, in the embodiment of the present application, the access of the second terminal device may include initial access, reaccess, or random access of the second terminal device. After the second terminal device accesses the network, the network device may identify and serve the second terminal device.

[0091] In addition, the supplementary information in the embodiment of the present application may also be referred to as SIB1-supplement information (SIB1-sup) or other names. The embodiment of the present application does not limit the name of the supplementary information.

[0092] Step 302: After receiving the SIB1 and the supplementary information, the second terminal device accesses the network according to the SIB1 and the supplementary information. After receiving the SIB1 and the supplementary information, the first terminal device accesses the network according to the SIB1.

[0093] For example, the second terminal device accesses the network according to the fourth information and the supplementary information in SIB1, wherein the fourth information in SIB1 is the information in SIB1 that the second terminal device needs to inherit when accessing the network.

[0094] For example, Figure 5 As shown, SIB1 includes information 1, information 2, information 3, information 4, information 5, and information 6, and the supplementary information includes information 3, information 4, and information 7. Information 3, information 4, and information 7 are information not included in SIB1 applied by the second terminal device. Specifically, information 3 and information 4 are second information, and information 7 is first information. Information 6 is information that the second terminal device does not apply in SIB1, i.e., third information. Information 1, information 2, and information 5 are information that the second terminal device applies in SIB1, i.e., fourth information. The second terminal device then accesses the network based on information 1, information 2, and information 5 in SIB1, as well as information 3, information 4, and information 7 in the supplementary information. Information 1, information 2, and information 5 in SIB1, as well as information 3, information 4, and information 7 in the supplementary information, can be understood as information included in SIB1 of the second terminal device. In this case, the second terminal device accesses the network based on information 1, information 2, information 5 in SIB1, as well as information 3, information 4, and information 7 in the supplementary information.

[0095] In the embodiment of the present application, the network device may periodically broadcast SIB1 and supplementary information. The period of broadcasting SIB1 and the period of broadcasting supplementary information may be the same or different.

[0096] Specifically, the SIB1 and the supplementary information in the embodiment of the present application may be two pieces of system information sent independently, or may be sent through one message, that is, the supplementary information is sent through SIB1.

[0097] When the supplementary information is sent through SIB1, there is no need to change the existing SIB1 scheduling method. It is only necessary to add the supplementary information to SIB1. Although the load of the corresponding message of SIB1 is increased, the communication method of the existing wireless communication system is slightly changed, which helps to simplify the implementation method of sending the supplementary information.

[0098] In the case where SIB1 and the supplementary information are two pieces of system information sent independently, the transmission resources of the supplementary information may be predefined. For example, the transmission resources of the supplementary information are indicated by a predefined transmission resource offset, for example, the transmission resource offset may be the offset of the transmission resources of the supplementary information relative to the transmission resources of SIB1 in the time domain. The second terminal device may determine on which time domain resources to receive the supplementary information based on the transmission resource offset and the transmission resources of SIB1. Alternatively, the transmission resources of the supplementary information are indicated by predefined time domain resource positions and / or frequency domain resource positions. For example, the time domain resource position may be a time slot number, the frequency domain resource position may be a position of a physical resource block (PRB), etc. In the embodiment of the present application, the transmission resources of the supplementary information may be predefined directly or indirectly. The above is only an example and does not constitute a limitation to the embodiment of the present application. The embodiment of the present application may also predefine the transmission resources of the supplementary information in other ways.

[0099] In other embodiments, the transmission resources for the supplemental information are scheduled using first resource indication information, and the transmission resources for SIB1 are scheduled using second resource indication information. The first resource indication information and the second resource indication information are carried in the first downlink control information. That is, the first downlink control information includes the first resource indication information and the second resource indication information. In other words, the transmission resources for the first supplemental information and the transmission resources for SIB1 are scheduled using the same downlink control information.

[0100] For example, the transmission method of the first downlink control information can be the transmission method of the existing DCI for scheduling SIB1, and the first downlink control information can be implemented by adding the first resource indication information to the existing DCI for scheduling SIB1. For example, the first resource indication information is transmitted through reserved bits or unused redundant bits in the DCI for scheduling SIB1. This method makes relatively small changes to the existing communication method, which helps to simplify the implementation. The second terminal device can receive the supplementary information based on the first resource indication information in the first downlink control information, and receive SIB1 based on the second resource indication in the first downlink control information. As for the first terminal device, although the first downlink control information includes the first resource indication information and the second resource indication information, the first terminal device receives SIB1 based on the second resource indication information in the first downlink control information, and can discard or ignore the first resource indication information in the first downlink control information.

[0101] In some other embodiments, the transmission resources of the supplementary information are scheduled via the first resource indication information, and the transmission resources of SIB1 are scheduled via the second resource indication information. The first resource indication information is carried in the first downlink control information, and the second resource indication information is carried in the second downlink control information. That is, the transmission resources of the supplementary information and the transmission resources of SIB1 can be scheduled via two different downlink control information. In this case, the second terminal device needs to detect both the downlink control information that schedules SIB1 and the downlink control information that schedules the supplementary information, and receive SIB1 and the supplementary information according to the two downlink control information respectively.

[0102] For example, the transmission resource of the first downlink control information may be the same as the transmission resource of the second downlink control information. For example, the transmission resource of the first downlink control information and the transmission resource of the second downlink control information are both the CORESET corresponding to the SSB. The CORESET corresponding to the SSB can refer to the above-mentioned related introduction and will not be repeated here. Alternatively, the transmission resource of the first downlink control information may also be indicated to the second terminal device through the second downlink control information, or indicated to the second terminal device through other means, which is not limited. In this way, there is no need to change the existing SIB1 transmission method, or the change to the SIB1 transmission method is relatively small, and the supplementary information and SIB1 are transmitted on different transmission resources, which helps to avoid the reliability of sending SIB1 affected by sending the supplementary information.

[0103] As another example, the transmission resource of the first downlink control information may also be predefined.

[0104] In addition, the embodiment of the present application is directed to how to send system information so that the wireless communication system can support communication with both the first terminal device and the second terminal device when the SIB1 of the first terminal device and the SIB1 of the second terminal device are different. It should be noted that the embodiment of the present application can also be applied to scenarios involving other system information blocks (such as SIB2, or SIB3, etc.) of the first terminal device and other system information blocks (such as SIB2 or SIB3, etc.) of the second terminal device.

[0105] The above embodiments can be used alone or in combination with each other to achieve different technical effects, which is not limited.

[0106] In the embodiments provided above, the communication method provided in the embodiments of the present application is introduced from the perspective of the network device and the second terminal device as the execution subject. In order to implement the various functions in the communication method provided in the embodiments of the present application, the network device or the second terminal device may include a hardware structure and / or a software module to implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether a function of the above functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.

[0107] Same as above idea, Figure 6 As shown, an embodiment of the present application further provides a communication device 600 , which includes a transceiver module 602 and a processing module 601 .

[0108] In one example, a communication device 600 is used to implement the functions of the second terminal device in the above method. The communication device 600 can be the second terminal device, or a device in the second terminal device. The communication device can be a chip.

[0109] The transceiver module 602 is used to receive SIB1 and supplementary information. The processing module 601 is used to access the network according to SIB1 and supplementary information.

[0110] In one example, a communication device 600 is used to implement the functions of the network device in the above method. The device can be a network device or a device in a network device. The device can be a chip.

[0111] The processing module 601 is used to trigger or control the transceiver module 602 to send SIB1 and supplementary information.

[0112] For the specific execution process of the processing module 601 and the transceiver module 602, please refer to the description in the above method embodiment. The division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, the functional modules in the various embodiments of the present application can be integrated into a processor, or they can exist separately physically, or two or more modules can be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software functional modules.

[0113] Same as above idea, Figure 7 As shown, an embodiment of the present application further provides a communication device 700.

[0114] In one example, the communication device 700 is used to implement the functions of the terminal device in the above method. The communication device 700 can be a second terminal device or a device in the second terminal device. The communication device 700 includes at least one processor 701, which is used to implement the functions of the second terminal device in the above method. For example, the processor 701 can be used to access the network based on SIB1 and supplementary information. For details, please refer to the detailed description of the method and will not be explained here.

[0115] In some embodiments, the communication device 700 may further include at least one memory 702 for storing program instructions and / or data. The memory 702 is coupled to the processor 701. The coupling in the embodiment of the present application is an interval coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. As another implementation, the memory 702 may also be located outside the communication device 700. The processor 701 can operate in conjunction with the memory 702. The processor 701 may execute program instructions stored in the memory 702. At least one of the at least one memory may be included in the processor.

[0116] In some embodiments, the communication device 700 may further include a communication interface 703 for communicating with other devices via a transmission medium, thereby enabling the devices in the communication device 700 to communicate with the other devices. For example, the communication interface 703 may be a transceiver, circuit, bus, module, or other type of communication interface, and the other device may be a network device or other terminal device. The processor 7001 utilizes the communication interface 703 to send and receive information and implement the methods in the above embodiments. For example, the communication interface 703 may be used to receive SIB1 and supplementary information.

[0117] In one example, the communication device 700 is used to implement the network device functions described in the above method. The communication device 700 can be a network device or a device within the network device. The communication device 700 includes at least one processor 701, which is used to implement the network device functions described in the above method. For example, the processor 701 can be used to control the transmission of SIB1 and supplementary information. For details, please refer to the detailed description of the method and will not be further described here.

[0118] In some embodiments, the communication device 700 may further include at least one memory 702 for storing program instructions and / or data. The memory 702 is coupled to the processor 701. The coupling in the embodiment of the present application is an interval coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. As another implementation, the memory 702 may also be located outside the communication device 700. The processor 701 can operate in conjunction with the memory 702. The processor 701 may execute program instructions stored in the memory 702. At least one of the at least one memory may be included in the processor.

[0119] In some embodiments, the communication device 700 may further include a communication interface 703 for communicating with other devices via a transmission medium, thereby enabling the devices in the communication device 700 to communicate with the other devices. For example, the communication interface 703 may be a transceiver, circuit, bus, module, or other type of communication interface, and the other device may be a network device or other terminal device. The processor 701 utilizes the communication interface 703 to send and receive information and implement the methods of the above embodiments. For example, the communication interface 703 may transmit SIB1 and supplementary information.

[0120] The embodiment of the present application does not limit the connection medium between the communication interface 703, the processor 701 and the memory 702. Figure 7 The memory 702, the processor 701 and the communication interface 703 may be connected via a bus, which may be divided into an address bus, a data bus, a control bus and the like.

[0121] In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of the present application may be directly implemented as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

[0122] In an embodiment of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), such as a random-access memory (RAM). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory in an embodiment of the present application may also be a circuit or any other device that can implement a storage function, for storing program instructions and / or data.

[0123] The methods provided in the embodiments of the present application can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, they can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, 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 computer-readable storage medium. 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 a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, an SSD).

[0124] Obviously, those skilled in the art may make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include these modifications and variations.

Claims

1. A communication method, characterized in that: The method comprises: Sending a system information block SIB1; the SIB1 includes access configuration information of the first terminal device and / or scheduling information of other system information blocks; Sending supplementary information, where the supplementary information is used to indicate access of a second terminal device, where the first terminal device and the second terminal device have different maximum transmission bandwidths; The supplementary information includes at least one of the first information and the second information, the SIB1 does not include the first information, and the parameter value of the second information included in the supplementary information is different from the parameter value corresponding to the second information in the SIB1; the SIB1 and the supplementary information are used for the second terminal device to access the network.

2. The method according to claim 1, wherein The supplementary information also includes first indication information, and the first indication information is used to instruct the second terminal device not to apply the third information in the SIB1.

3. The method according to claim 1, wherein The supplementary information also includes second indication information, and the second indication information is used to instruct the second terminal device to apply the fourth information in the SIB1.

4. The method according to claim 1, wherein The second information includes random access configuration information of the second terminal device, and / or the second information includes scheduling information of other system information blocks of the second terminal device.

5. The method according to claim 1, wherein The first information includes time domain resource indication information, and the time domain resource indication information is used to indicate the effective time domain resources for the second terminal device to receive and / or send information. The effective time domain resources are a subset of the time domain resources for the first terminal device to receive or send information.

6. The method according to any one of claims 1 to 5, characterized in that The supplementary information is sent via the SIB1.

7. The method according to any one of claims 1 to 5, characterized in that The transmission resource of the supplementary information is determined by at least one of the following methods: The transmission resource of the supplementary information is predefined; The transmission resources of the supplementary information are scheduled by first resource indication information, the transmission resources of the SIB1 are scheduled by second resource indication information, and the first resource indication information and the second resource indication information are carried in the first downlink control information; The transmission resources of the supplementary information are scheduled through first resource indication information, and the transmission resources of the SIB1 are scheduled through second resource indication information. The first resource indication information is carried in the first downlink control information, and the second resource indication information is carried in the second downlink control information.

8. The method according to any one of claims 1 to 5, characterized in that The second terminal device is an Internet of Things terminal, a machine type communication terminal, or a terminal with reduced capabilities.

9. A communication method, characterized in that: The method is applicable to a second terminal device, and includes: Receive a system information block SIB1; the SIB1 includes access configuration information of the first terminal device and / or scheduling information of other system information blocks; receiving supplementary information, where the supplementary information is used to indicate access of the second terminal device, and the maximum transmission bandwidth of the first terminal device is different from that of the second terminal device; The supplementary information includes at least one of first information and second information, the SIB1 does not include the first information, and a parameter value of the second information included in the supplementary information is different from a parameter value corresponding to the second information in the SIB1; Access a network according to the SIB1 and the supplementary information.

10. The method according to claim 9, wherein The supplementary information also includes first indication information, and the first indication information is used to instruct the second terminal device not to apply the third information in the SIB1.

11. The method according to claim 9, wherein The supplementary information also includes second indication information, and the second indication information is used to instruct the second terminal device to apply the fourth information in the SIB1.

12. The method according to claim 9, wherein The second information includes random access configuration information of the second terminal device, and / or the second information includes scheduling information of other system information blocks of the second terminal device.

13. The method according to claim 9, wherein The first information includes time domain resource indication information, and the time domain resource indication information is used to indicate the effective time domain resources for the second terminal device to receive and / or send information. The effective time domain resources are a subset of the time domain resources for the first terminal device to receive or send information.

14. The method according to any one of claims 9 to 13, characterized in that The supplementary information is sent via the SIB1.

15. The method according to any one of claims 9 to 13, characterized in that The transmission resource of the supplementary information is determined by at least one of the following methods: The transmission resource of the supplementary information is predefined; The transmission resources of the supplementary information are scheduled by first resource indication information, the transmission resources of the SIB1 are scheduled by second resource indication information, and the first resource indication information and the second resource indication information are carried in the first downlink control information; The transmission resources of the supplementary information are scheduled through first resource indication information, and the transmission resources of the SIB1 are scheduled through second resource indication information. The first resource indication information is carried in the first downlink control information, and the second resource indication information is carried in the second downlink control information.

16. The method according to any one of claims 9 to 13, wherein The second terminal device is an Internet of Things terminal, a machine type communication terminal, or a terminal with reduced capabilities.

17. A communication device, characterized in that: including a processor and a communication interface; The processor is used to control the transmission and reception of the communication interface; The communication interface is used to send the system information block SIB1 and supplementary information; In which, the SIB1 includes access configuration information of the first terminal device and / or scheduling information of other system information blocks; the supplementary information is used to indicate the access of the second terminal device, and the maximum transmission bandwidth of the first terminal device is different from that of the second terminal device; the supplementary information includes at least one of the first information and the second information, the SIB1 does not include the first information, and the parameter value of the second information included in the supplementary information is different from the parameter value corresponding to the second information in the SIB1; the SIB1 and the supplementary information are used for the second terminal device to access the network.

18. The communication device according to claim 17, wherein: The second information includes random access configuration information of the second terminal device, and / or the second information includes scheduling information of other system information blocks of the second terminal device.

19. The communication device according to claim 17, wherein: The first information includes time domain resource indication information, and the time domain resource indication information is used to indicate the effective time domain resources for the second terminal device to receive and / or send information. The effective time domain resources are a subset of the time domain resources for the first terminal device to receive or send information.

20. The communication device according to any one of claims 17 to 19, characterized in that: The supplementary information is sent via the SIB1.

21. The communication device according to any one of claims 17 to 19, wherein: The transmission resource of the supplementary information is determined by at least one of the following methods: The transmission resource of the supplementary information is predefined; The transmission resources of the supplementary information are scheduled by first resource indication information, the transmission resources of the SIB1 are scheduled by second resource indication information, and the first resource indication information and the second resource indication information are carried in the first downlink control information; The transmission resources of the supplementary information are scheduled through first resource indication information, and the transmission resources of the SIB1 are scheduled through second resource indication information. The first resource indication information is carried in the first downlink control information, and the second resource indication information is carried in the second downlink control information.

22. The communication device according to any one of claims 17 to 19, wherein: The second terminal device is an Internet of Things terminal, a machine type communication terminal, or a terminal with reduced capabilities.

23. A communication device, characterized in that: including a processor and a communication interface; The communication interface is configured to receive a system information block SIB1 and supplementary information; the SIB1 including access configuration information of a first terminal device and / or scheduling information of other system information blocks; the supplementary information is configured to indicate access of the communication device, the first terminal device and the communication device having different maximum transmission bandwidths; The supplementary information includes at least one of first information and second information, the SIB1 does not include the first information, and a parameter value of the second information included in the supplementary information is different from a parameter value corresponding to the second information in the SIB1; The processor is configured to access a network according to the SIB1 and the supplementary information.

24. The communication device according to claim 23, wherein: The second information includes random access configuration information of the communication device, and / or the second information includes scheduling information of other system information blocks of the communication device.

25. The communication device according to claim 23, wherein The first information includes time domain resource indication information, and the time domain resource indication information is used to indicate the effective time domain resources for the communication interface to receive and / or send information. The effective time domain resources are a subset of the time domain resources for the first terminal device to receive or send information.

26. The communication device according to any one of claims 23 to 25, characterized in that: The supplementary information is sent via the SIB1.

27. The communication device according to any one of claims 23 to 25, characterized in that: The transmission resource of the supplementary information is determined by at least one of the following methods: The transmission resource of the supplementary information is predefined; The transmission resources of the supplementary information are scheduled by first resource indication information, the transmission resources of the SIB1 are scheduled by second resource indication information, and the first resource indication information and the second resource indication information are carried in the first downlink control information; The transmission resources of the supplementary information are scheduled through first resource indication information, and the transmission resources of the SIB1 are scheduled through second resource indication information. The first resource indication information is carried in the first downlink control information, and the second resource indication information is carried in the second downlink control information.

28. The communication device according to any one of claims 23 to 25, characterized in that The communication device is an Internet of Things terminal, a machine type communication terminal, or a terminal with reduced capabilities.

29. A computer-readable storage medium, characterized in that The computer-readable storage medium stores program instructions, and when the program instructions are executed on a computer, the computer is caused to execute the method according to any one of claims 1 to 8 or the method according to any one of claims 9 to 16.

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