System message transmission, reception method and apparatus, base station, terminal

Abstract

The application provides a system message sending and receiving method and device, a base station and a terminal, wherein the sending method comprises the following steps: the base station configures a radio frame for sending a system message in a system message window SI-Window through a system message repetition mode; and the base station starts sending the system message in the available radio subframes of the radio frame configured by the system message repetition mode, and if the radio frame configured by the system message repetition mode does not have enough available radio subframes for sending the system message once or multiple times, the system message is continuously sent in the available radio subframes in the specified radio frame for one or more times of repeated sending. By using the above technical scheme, the problem that the existing technology cannot send the system message with the increase of the number of radio subframes occupied by the system message SI in the related art is solved, and no matter how large the system message is, appropriate radio subframes can be selected for sending, and network resources are reasonably utilized.

Description

[0001] This application is a divisional application of Chinese patent application No. 201610323477.2, filed on May 13, 2016, entitled "Method and apparatus for sending and receiving system messages, base station, terminal". Technical Field

[0002] This invention relates to the field of communications, and more specifically, to a method and apparatus for sending and receiving system messages, a base station, and a terminal. Background Technology

[0003] Machine-to-machine (M2M) communication is a crucial research topic in 5G (5th Generation) mobile communication technology and a significant application area for future wireless communication. Within the M2M field, the 3rd Generation Partnership Project (3GPP) proposed a sub-project on Narrow Band Internet of Things (NB-IoT) systems to address the characteristics of low-cost, low-throughput terminals. The goal is to build a system similar to LTE within the 200 kHz frequency band, providing low-throughput wireless communication services for low-cost terminals.

[0004] System information (SI) is common information for a cell, used to indicate the cell's system parameters. User equipment (UE) camped in the cell must maintain consistency with the latest system information. System information is typically transmitted on the cell's broadcast channel. In LTE and NB-IoT systems, system information is divided into two categories: master information blocks (MIBs) and system information blocks (SIBs). SIBs are further subdivided into system information blocks with different numbers, such as SIB1, SIB2, and SIB3. System information blocks other than SIB1 constitute one or more SIs. SIB1 carries the scheduling information of the constituent SIs, which indicates the number of the system information blocks contained in each SI, the transmission period, and the time window for the UE to receive these SIs.

[0005] Each SI has its own transmission period. Within the time interval of each SI transmission period, the system configures a transmission window for each SI, called the SI-Window. SI information is scheduled to be transmitted within this window, and the SI-windows of multiple SIs are transmitted sequentially according to the configured order, such as... Figure 1As shown, SI-1 and SI-2 are configured with transmission periods, and the period of SI-2 is twice that of SI-1. Within the transmission period of SI, if both SI-1 and SI-2 meet their periods, their SI-Window will be arranged sequentially within the time interval of the period.

[0006] In 3GPP's conclusions, the transmission of SI information within an SI-Window follows this method: the system configures each SI with a radio frame for repeated transmission within the SI-Window. The repetition pattern specifies the subframe resources of the Mth radio frame out of every N radio frames in the SI-Window used by the SI. Downlink valid subframes are configured to specify the radio subframes that can be used within a given radio frame. Furthermore, it is agreed that radio subframes occupied by specific system control information are invalid. This specific system control information includes the Physical Broadcast Channel (PBCH), Primary Synchronization Symbol (PSS), Secondary Synchronization Symbol (SSS), and System Message Block Type 1 (SIB1).

[0007] Therefore, the available radio subframes for transmitting SI refer to all radio subframes except those occupied by specific system control information and invalid radio subframes.

[0008] Therefore, as Figure 2 The diagram illustrates the radio subframe resources configured for a System Message (SI) using the method described above. Within the SI-window of this SI, the Mth radio frame out of every N radio frames is configured to transmit the radio frame for this SI. For example... Figure 3 The image shows an example of a valid radio subframe that can be used to transmit SI information within a radio frame.

[0009] On the other hand, in NB-IoT or enhanced mobile network technology solutions, some UEs are located in areas with weak wireless signal coverage. To address this need, the network side repeatedly transmits the same information, which the UE then merges to improve signal reception quality. Therefore, in the transmission of system messages, the base station repeatedly transmits the SI in the aforementioned radio subframes where SI can be used, thereby enhancing the quality of SI reception by the UE.

[0010] In eMTC, an SI message only requires one radio subframe. Therefore, in the radio subframe resources configured by the base station, the SI is transmitted repeatedly in each radio subframe. In NB-IoT, however, depending on the size of the SI message, one SI message may require 8, 4, or 2 radio subframes to complete one transmission.

[0011] In NB-IoT, the number of radio subframes required to transmit SI information is greater than 1. This leads to the following problem: In the radio frames configured to transmit SI in the above method, there may not be enough available radio subframes for a complete SI transmission, or the number of available radio subframes may be greater than the resources required for a complete SI transmission, but not an integer multiple of the resources required for a complete SI transmission.

[0012] Regarding the issue that existing technologies cannot transmit system messages (SI) as the number of radio subframes required to send SI increases, no effective solution has yet been proposed. Summary of the Invention

[0013] This invention provides a method and apparatus for sending and receiving system messages, a base station, and a terminal, to at least solve the problem in related technologies that the existing technology cannot send system messages as the number of radio subframes required for system messages SI increases.

[0014] According to one aspect of the present invention, a method for sending system messages is provided, comprising:

[0015] The base station configures a radio frame for sending system messages in the system message window (SI-Window) through a system message repetition mode. The base station starts sending system messages in the available radio subframes of the radio frame configured in the system message repetition mode. If the radio frame configured in the system message repetition mode does not have enough available radio subframes to send the system message once or multiple times, the system message is resent once or multiple times in the available radio subframes of the specified radio frame.

[0016] Optionally, the designated radio frame includes at least one of the following: a subsequent radio frame of the radio frame configured in the system message repeat mode; or the next radio frame configured in the system message repeat mode.

[0017] Optionally, the method further includes: determining, based on the size of the system message to be sent, the number of times the system message will be repeatedly sent starting from each radio frame configured for the system message repetition mode, and instructing the terminal to repeatedly send the system message starting from each radio frame configured for the system message repetition mode by at least one of the following: specifying a protocol agreement; specifying a signaling notification.

[0018] Optionally, the method further includes:

[0019] If there are not enough available radio subframes in the radio frame configured in the last system message repeat mode in SI-Window to send a complete system message, then the available radio subframes in the last radio frame that are insufficient to send a complete system message are prohibited from sending system messages.

[0020] According to another aspect of the present invention, a method for receiving system messages is also provided, comprising:

[0021] The terminal begins receiving system messages in the available radio subframes of the radio frame configured in the system message repetition mode. If there are not enough available radio subframes in the radio frame configured in the system message repetition mode to receive the system message once or multiple times, the terminal continues to receive the system message once or multiple times in the available radio subframes of the specified radio frame.

[0022] Optionally, the designated radio frame includes at least one of the following: a subsequent radio frame of the radio frame configured in the system message repeat mode; or the next radio frame configured in the system message repeat mode.

[0023] Optionally, based on the size of the system message to be sent, the number of times the system message will be repeatedly sent starting from each radio frame configured for the system message repetition mode is determined, and the terminal is instructed on the number of times the system message will be repeatedly sent starting from each radio frame configured for the system message repetition mode by at least one of the following: specifying a protocol agreement; specifying a signaling notification.

[0024] According to another aspect of the present invention, a system message transmitting apparatus is also provided, applied to a base station, comprising: a configuration module, configured in a system message window (SI-Window) to configure a radio frame for transmitting system messages in a system message repetition mode; and a transmitting module, configured to start transmitting system messages in available radio subframes of the radio frame configured in the system message repetition mode, wherein if the radio frame configured in the system message repetition mode does not have enough available radio subframes for transmitting the system message once or multiple times, then the system message is repeatedly transmitted once or multiple times in available radio subframes of a specified radio frame.

[0025] According to another aspect of the present invention, a system message receiving apparatus is also provided, applied to a terminal, comprising: a receiving module, configured to receive system messages at the beginning of an available radio subframe of a radio frame configured in a system message repetition mode, and if there are not enough available radio subframes in the radio frame configured in the system message repetition mode for receiving the system message once or multiple times, to continue receiving the system message once or multiple times in an available radio subframe of a specified radio frame.

[0026] According to another aspect of the present invention, a base station is also provided, characterized in that it includes the above-described means for transmitting system messages.

[0027] According to another aspect of the present invention, a terminal is also provided, including the system message receiving device described above.

[0028] This invention addresses the problem in related technologies where, if there are not enough available radio subframes in a radio frame configured by the system message repetition mode to send the system message once or multiple times, an available radio subframe required for sending the system message is selected from a specified radio frame to continue sending the system message. This solves the problem that, as the number of radio subframes required for the system message SI increases, existing technologies cannot send the system message. It ensures that regardless of the size of the system message, a suitable radio subframe can be selected for transmission, thus making reasonable use of network resources. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0030] Figure 1 This is a schematic diagram of SI-window technology for system messages in related technologies;

[0031] Figure 2 A schematic diagram of radio frame resources configured for the repetition mode of system messages in NB-IoT technology;

[0032] Figure 3 This is a schematic diagram of a valid wireless subframe in a wireless frame in NB-IoT technology.

[0033] Figure 4 This is a flowchart of a system message sending method according to an embodiment of the present invention;

[0034] Figure 5 This is a flowchart of a system message receiving method according to an embodiment of the present invention;

[0035] Figure 6 This is a structural block diagram of a system message sending device according to an embodiment of the present invention;

[0036] Figure 7 This is a structural block diagram of a system message receiving device according to an embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of system message transmission according to a preferred embodiment of the present invention;

[0038] Figure 9This is a schematic diagram of system message transmission according to a preferred embodiment 2 of the present invention;

[0039] Figure 10 This is a schematic diagram of the transmission of system messages according to a preferred embodiment 3 of the present invention. Detailed Implementation

[0040] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the present application can be combined with each other.

[0041] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0042] Example 1

[0043] This embodiment provides a method for sending system messages. Figure 4 This is a flowchart of a system message sending method according to an embodiment of the present invention, such as... Figure 4 As shown, the process includes the following steps:

[0044] In step S402, the base station configures the radio frame for sending system messages in the system message window SI-Window through the system message repetition mode;

[0045] In step S404, the base station begins transmitting system messages in the available radio subframes of the radio frame configured in the system message repetition mode. If there are not enough available radio subframes in the radio frame configured in the system message repetition mode to transmit system messages once or multiple times, the system message continues to be transmitted once or multiple times in the available radio subframes of the specified radio frame.

[0046] Through the above steps, if there are not enough available radio subframes in the radio frames configured by the system message repetition mode to send one or more system messages, then an available radio subframe required for sending the system message is selected from the specified radio frames to continue sending the system message. This solves the problem in related technologies where the number of radio subframes required for the system message SI increases, making it impossible to send the system message using existing technologies. This ensures that regardless of the size of the system message, a suitable radio subframe can be selected for transmission, making reasonable use of network resources.

[0047] That is, starting from the radio frame configured for the system message repetition mode, the available radio subframes in these radio frames are used continuously until one or more complete repetitions of the system message are completed.

[0048] The statement in step S404, "If there are not enough available radio subframes to send one or more system messages, then select the available radio subframes required to send the system messages from the specified radio frame," can be understood as follows: If an integer number of system messages cannot be sent in the initial radio frame, meaning there is a situation where a system message is not sent completely, then the required radio subframes for sending the system messages will be selected from the specified radio frame. For example, if the system message needs to be sent through A radio subframes, and the initial radio frame contains B available radio subframes for sending the system message, if A is greater than B, then the difference between A and B available radio subframes will be selected from the specified radio frame to send the system message.

[0049] For the specified radio frame, at least one of the following is included: a subsequent radio frame of the radio frame configured in the system message repeat mode; or the next radio frame configured in the system message repeat mode.

[0050] It can be understood as the Mth radio frame in the next group of N radio frames in the group containing the Mth radio frame of the current system message; or the subsequent radio frames of the Mth radio frame of the current system message, i.e., M+1, M+2, and so on, until one or more system messages are sent. M takes a value greater than or equal to 1 and less than or equal to N.

[0051] It should be noted that if the specified radio frame refers to the Mth radio frame in the next group of N radio frames in the group containing the Mth radio frame currently transmitting the system message, then if the number of available radio subframes in the last group is insufficient to transmit a complete system message, then the available radio subframes in the last group that are insufficient to transmit a complete system message are prohibited from transmitting system messages.

[0052] The above method further includes: determining the number of times to repeatedly transmit the system message starting from the radio frame configured for each system message repetition mode, based on the size of the system message to be transmitted, and instructing the terminal system message to repeatedly transmit the system message starting from the radio frame configured for each system message repetition mode in at least one of the following forms: specifying a protocol agreement; specifying a signaling notification.

[0053] In this embodiment of the invention, the number of times the system message is repeated, starting from each repetition pattern configured radio frame, or in other words, from every N radio frames, is determined by the protocol or signaling instruction to the terminal.

[0054] The methods agreed upon in the agreement include:

[0055] The protocol defines the mapping relationship between message size (TBS, Transport Block Size) and the number of repetitions.

[0056] The protocol defines the mapping relationship between message size and the number of radio subframes required for a single retransmission, and also defines the mapping relationship between the number of radio subframes required for a single retransmission and the number of repetitions.

[0057] Example 2

[0058] This embodiment provides a method for receiving system messages. Figure 5 This is a flowchart of a system message receiving method according to an embodiment of the present invention, such as... Figure 5 As shown, the process includes the following steps:

[0059] Step S502: The terminal starts receiving system messages in the available radio subframes of the radio frame configured in the system message repetition mode. If there are not enough available radio subframes in the radio frame configured in the system message repetition mode to receive one or more system messages, the terminal continues to receive one or more repeated transmissions of system messages in the available radio subframes of the specified radio frame.

[0060] Through the above steps, if there are not enough available radio subframes in the radio frames configured by the system message repetition mode to send one or more system messages, then an available radio subframe required for sending the system message is selected from the specified radio frames to continue sending the system message. This solves the problem in related technologies where the number of radio subframes required for the system message SI increases, making it impossible to send the system message using existing technologies. This ensures that regardless of the size of the system message, a suitable radio subframe can be selected for transmission, making reasonable use of network resources.

[0061] The specified radio frame includes at least one of the following: a subsequent radio frame of the radio frame configured in the system message repeat mode; or the next radio frame configured in the system message repeat mode.

[0062] The specified radio frame can also be understood as: the Mth radio frame in the next group of N radio frames in the group to which the Mth radio frame of the current system message is being sent; the subsequent radio frames of the Mth radio frame of the current system message, i.e., M+1, M+2, and so on, until one or more system messages have been sent.

[0063] It should be noted that how to configure the radio frame for starting to send system messages in system message repeat mode is not the focus of this invention. Therefore, the content of this invention applies to different methods of configuring the radio frame for sending system messages in system message repeat mode.

[0064] In the embodiments of the present invention, dividing the radio frames in the SI-Window into N groups, with the Mth radio frame of each group being the radio frame for sending system messages, is only an example used to illustrate the method of the present invention.

[0065] The embodiments of the present invention are also applicable to other system message repetition mode configuration methods, such as the following method: starting from the Lth radio frame of SI-Window, the base station designates every N radio frames as radio frames for sending system messages.

[0066] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of the present invention.

[0067] Example 3

[0068] This embodiment also provides a system message sending device applied to a base station. This device is used to implement the above embodiments and preferred embodiments, and details already described will not be repeated. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0069] Figure 6 This is a structural block diagram of a system message sending device according to an embodiment of the present invention, such as... Figure 6 As shown, the device includes:

[0070] Configuration module 60 is used to configure the wireless frame for sending system messages in the system message window SI-Window through the system message repeat mode;

[0071] The transmitting module 62 is used to start transmitting system messages in the available radio subframes of the radio frame configured in system message repetition mode, wherein if there are not enough available radio subframes in the radio frame configured in system message repetition mode to transmit system messages once or multiple times, the system message is continued to be transmitted once or multiple times in the available radio subframes of the specified radio frame.

[0072] Through the combined effect of the above modules, if there are not enough available radio subframes in the radio frame configured in the repeating mode to send one or more system messages, then an available radio subframe required for sending the system message is selected in the specified radio frame to continue sending the system message. This solves the problem in related technologies where the number of radio subframes required for the system message SI increases, making it impossible to send the system message using existing technologies. This ensures that regardless of the size of the system message, a suitable radio subframe can be selected for transmission, making reasonable use of network resources.

[0073] For the specified radio frame mentioned above, at least one of the following is included: the next radio frame configured in the system message repetition mode; the subsequent radio frame of the currently transmitted system message, that is, if the radio frame of the currently transmitted system message is M, then the subsequent radio frames are M+1, M+2, and so on, until one or more repetitions of the transmitted system message are completed.

[0074] It should be noted that in the last group of multiple groups containing N radio frames, if the number of available radio subframes in the last group is insufficient to send a complete system message, then the available radio subframes in the last group that are insufficient to send a complete system message are prohibited from sending system messages.

[0075] Example 4

[0076] This embodiment also provides a system message receiving device applied to a terminal. This device is used to implement the above embodiments and preferred embodiments, and details already described will not be repeated. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0077] Figure 7 This is a structural block diagram of a system message receiving device according to an embodiment of the present invention, such as... Figure 7 As shown, the device includes:

[0078] The receiving module 70 is configured to begin receiving system messages in the available radio subframes of a radio frame configured in the system message repetition mode. If there are not enough available radio subframes in the radio frame configured in the system message repetition mode to receive one or more repetitions of system messages, it continues to receive one or more repetitions of system messages in the available radio subframes of the specified radio frame.

[0079] Through the functions of the above modules, the receiving module 70 receives system messages sent by the base station. In the radio frame configured by the system message repetition mode, if there are not enough available radio subframes to receive one or more system messages, the available radio subframes required for receiving the system messages are selected in the specified radio frame to continue receiving the system messages one or more times. This solves the problem in related technologies where the number of radio subframes required for system messages SI increases, making it impossible to send system messages using existing technologies. It enables the selection of appropriate radio subframes for transmission regardless of the size of the system message, thus making reasonable use of network resources.

[0080] In this embodiment of the invention, a base station is also provided, including the above-mentioned base station-side system message sending device.

[0081] In this embodiment of the invention, a terminal is also provided, including the above-mentioned terminal-side system message receiving device.

[0082] It should be noted that the above modules can be implemented by software or hardware. For the latter, they can be implemented in the following ways, but are not limited to: all the above modules are located in the same processor; or, the above modules are located in different processors in any combination.

[0083] The technical solutions of the above embodiments will be described in detail below with reference to preferred embodiments.

[0084] Preferred embodiment 1

[0085] Figure 8 This is a schematic diagram of system message transmission according to a preferred embodiment of the present invention, such as... Figure 8 As shown

[0086] The main inventive idea of ​​the preferred embodiment 1 of the present invention is as follows: the base station starts to transmit the system message SI in the available radio subframes of the radio frame that transmits the SI message configured by the repetition pattern. If there are not enough available radio subframes to transmit the SI message once or multiple times in a configured radio frame that transmits the SI message, the base station transmits the SI message once or multiple times in the available radio subframes of the radio frame that transmits the SI message and the subsequent radio frames (equivalent to the specified radio frames in the above embodiments).

[0087] like Figure 8As shown, the repetition pattern configures the radio frame for sending the SI message to be the Nth radio frame out of every N radio frames. Therefore, within the SI-Window of this SI, every N radio frames form a group, and the Nth radio frame in each group of N radio frames is the radio frame for sending the SI as configured by the repetition pattern parameter. Within each group's Nth radio frame, there are 6 valid radio subframes available for sending the SI message. The SI message, depending on its size, requires 8, 4, or 2 radio frames to complete one transmission.

[0088] For cases requiring 8 radio subframes to complete an SI transmission, the base station uses the Nth radio frame in each group of radio frames and 8 consecutive valid radio subframes from its subsequent radio frames to complete a full transmission of the SI message. In a preferred embodiment of the invention, the valid radio subframes in each radio frame are subframe numbers 1, 2, 3, 6, 7, and 8. Therefore, in the Nth radio frame, radio subframes 1, 2, 3, 6, 7, and 8 are used, and in the next radio frame, radio subframes 1 and 2 are used, for a total of 8 consecutive valid radio subframes.

[0089] It should be noted that, in the preferred embodiment of the present invention, this SI message is sent only once in the transmission of SI at the beginning of each repetition pattern configured for sending SI. That is, the SI message is sent only once every N radio frames.

[0090] For cases where a single SI transmission requires 4 or 2 radio subframes, there are two options:

[0091] Option 1: In the radio frame configured to transmit SI in the repetition pattern, the base station transmits the SI message only once. If the configured radio frame for transmitting SI does not have enough valid radio subframes to transmit a complete SI message, the base station uses the radio frame and valid radio subframes in subsequent radio frames to complete its transmission.

[0092] Option 2 involves retransmitting the SI a certain number of times starting from the radio frame configured in the repetition pattern. Specifically, the SI is retransmitted a certain number of times every N radio frames, and the number of repetitions is related to the SI size. For example, if the SI size is 2, requiring 2 valid radio subframes to complete one transmission, then the SI is retransmitted M1 times every N radio frames, where M1 can be 4. Conversely, if the SI size is 4, requiring 4 valid radio subframes to complete one transmission, then the SI is retransmitted M2 times every N radio frames, where M2 can also be 2.

[0093] After determining the number of repetitions in every N radio frames, the effective radio subframes used to transmit the SI also follow the method of this embodiment of the invention. That is, if there are not enough available radio subframes to transmit the SI message once or multiple times in a radio frame configured to transmit the SI message, the base station transmits the SI once or multiple times in the available radio subframes in the radio frame transmitting the SI message and in subsequent radio frames.

[0094] Preferred embodiment 2

[0095] Figure 9 This is a schematic diagram of system message transmission according to a preferred embodiment 2 of the present invention, as shown below. Figure 9 As shown, the difference between preferred embodiment 2 and preferred embodiment 1 lies only in the position of the radio frame used to send the SI in the repetition pattern configuration. In preferred embodiment 2 of the present invention, every N radio frames form a group, and the Mth radio frame in each group of N radio frames is configured as the starting radio frame for sending the SI message.

[0096] Preferred Example 3

[0097] Figure 10 This is a schematic diagram of the transmission of system messages according to a preferred embodiment 3 of the present invention, as shown below. Figure 10 As shown,

[0098] The technical solution of the preferred embodiment of the present invention can be understood as follows: the base station continuously transmits SI messages on the effective radio subframe of the radio frame used for transmitting SI, which is configured by the repetition pattern.

[0099] In the preferred embodiment 3 of the present invention, every N radio frames form a group, and the Mth radio frame in each group is the radio frame for transmitting the SI. A complete transmission of the SI requires S radio subframes. The base station starts with the first radio frame used to transmit the SI within the SI-window of the SI, and continuously uses the valid radio subframes configured in the SI-window for transmitting the SI, wherein every S radio subframes are used to transmit a complete SI message.

[0100] like Figure 10 As shown, the first transmission of the SI message uses 6 valid subframes from the Mth radio frame of the first group of N radio frames, and 2 radio subframes from the Mth radio frame of the second group of N radio frames. The second transmission of the SI message uses 4 radio subframes from the Mth radio frame of the second group of N radio frames, and 4 radio subframes from the Mth radio frame of the third group of N radio frames, and so on.

[0101] In the SI-Window, the number of valid radio subframes in all radio frames used to send the SI is configured as Q. When Q is not an integer multiple of the number of radio subframes S required for a single SI transmission, radio subframes that are insufficient to send a complete SI message are not used to send the SI message. For example, in this case, the last two radio subframes of the Mth radio frame in the third group of N radio frames are insufficient to send a complete SI message (S=8), so these two radio subframes are not used to send the SI message.

[0102] In summary, the embodiments of the present invention achieve the following technical effects: they solve the problem in related technologies that, as the number of radio subframes required for system messages SI increases, existing technologies cannot send system messages, enabling the selection of appropriate radio subframes for transmission regardless of the size of the system message, thus making reasonable use of network resources.

[0103] Embodiments of the present invention also provide a storage medium. Optionally, in this embodiment, the storage medium may be configured to store program code for performing the following steps:

[0104] S1, Configure the wireless frame for sending system messages in the system message window SI-Window through the system message repeat mode;

[0105] S2, start transmitting system messages in the available radio subframes of the radio frame configured in system message repetition mode, wherein if the radio frame configured in system message repetition mode does not have enough available radio subframes for transmitting one or more system messages, then continue transmitting one or more repetitions of system messages in the available radio subframes of the specified radio frame.

[0106] Embodiments of the present invention also provide a storage medium. Optionally, in this embodiment, the storage medium may be configured to store program code for performing the following steps:

[0107] S1, begin receiving system messages in the available radio subframes of the radio frame configured in the system message repeat mode. If the radio frame configured in the system message repeat mode does not have enough available radio subframes to receive one or more system messages, continue receiving one or more repeated transmissions of system messages in the available radio subframes of the specified radio frame.

[0108] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0109] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated here.

[0110] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. Optionally, they can be implemented using computer-executable program code, thereby storing them in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0111] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for wireless communication, characterized in that, include: The base station sends a system message to the terminal in a system message window, wherein the system message is carried in one or more radio subframes of a first radio frame, the first radio frame is indicated by a system message repetition mode and the one or more radio subframes are valid for carrying transmissions from the base station to the terminal, and the system message repetition mode specifies that the system message is sent in the Mth radio frame of every N radio frames, where M is greater than or equal to 1 and less than N. as well as When there are not enough available radio subframes in the first radio frame to transmit the system message, the base station continues to transmit the system message in one or more available radio subframes in the specified radio frame of the system message window. The specified radio frame includes at least the next radio frame indicated by the system message repeating mode.

2. The method according to claim 1, characterized in that, The method further includes: Based on the size of the system message to be sent, determine the number of times the system message will be repeatedly sent starting from each radio frame configured for the system message repetition mode, and instruct the terminal to repeat the system message the number of times starting from each radio frame configured for the system message repetition mode by at least one of the following: specifying a protocol agreement; specifying a signaling notification.

3. The method according to claim 1 or 2, characterized in that, The method further includes: If there are not enough available radio subframes in the last system message repeat mode configured in the system message window to send a complete system message, then the system message cannot be sent if there are not enough available radio subframes in the last radio frame to send a complete system message.

4. A method for wireless communication, characterized in that, include: The terminal receives a system message from the base station in a system message window, wherein the system message is carried in one or more radio subframes of a first radio frame, the first radio frame is indicated by a system message repetition mode and the one or more radio subframes are valid for carrying transmissions from the base station to the terminal, and the system message repetition mode specifies that the system message is sent in the Mth radio frame of every N radio frames, where M is greater than or equal to 1 and less than N. as well as When there are not enough available radio subframes in the first radio frame for receiving the system message, the terminal continues to receive the system message in one or more available radio subframes in the specified radio frame of the system message window. The specified radio frame includes at least the next radio frame indicated by the system message repeating mode.

5. The method according to claim 4, characterized in that, Based on the size of the system message to be sent, determine the number of times the system message will be repeatedly sent starting from each radio frame configured for the system message repetition mode, and instruct the terminal on the number of times the system message will be repeatedly sent starting from each radio frame configured for the system message repetition mode by at least one of the following: specifying a protocol agreement; specifying a signaling notification.

6. A device for wireless communication, characterized in that, include: A sending module is configured to send a system message to a terminal in a system message window, wherein the system message is carried in one or more radio subframes of a first radio frame, the first radio frame being indicated by a system message repetition mode and the one or more radio subframes being valid for carrying a transmission from the device to the terminal, the system message repetition mode specifying that the system message is sent in the Mth radio frame of every N radio frames, where M is greater than or equal to 1 and less than N. The transmitting module is further configured to continue transmitting the system message in one or more available radio subframes within a specified radio frame in the system message window when there are not enough available radio subframes in the first radio frame for transmitting the system message. The specified radio frame includes at least the next radio frame indicated by the system message repeating mode.

7. A device for wireless communication, characterized in that, include: A receiving module is configured to receive system messages from a base station in a system message window, wherein the system messages are carried in one or more radio subframes of a first radio frame, the first radio frame being indicated by a system message repetition mode and the one or more radio subframes being valid for carrying a transmission from the base station to the device, the system message repetition mode specifying that the system messages are sent in the Mth radio frame of every N radio frames, where M is greater than or equal to 1 and less than N. The receiving module is further configured to continue receiving the system message in one or more available radio subframes in a specified radio frame of the system message window when there are not enough available radio subframes in the first radio frame for receiving the system message. The specified radio frame includes at least the next radio frame indicated by the system message repeating mode.

8. A base station, characterized in that, include: The apparatus for wireless communication as described in claim 6.

9. A terminal, characterized in that, include: The apparatus for wireless communication as described in claim 7.

10. A computer-readable storage medium having program code stored thereon, the program code causing the processor to perform the method as described in any one of claims 1-5 when executed by a processor.

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