Patent Application
20250133480
The disclosure relates to a field of communication technologies, and more particularly to a method and an apparatus for sending system information, a method and an apparatus for receiving system information, and a storage medium.
In the related art, configuration information of positioning system information can be sent through a system information block 1 (SIB1). The configuration information refers to a sending period, a mapping mode and the like of the positioning system information.
A disadvantage in the related art is that: sending the positioning system information by using a modulation mode and a number of multiple input multiple output (MIMO) layers of ordinary system information may cause a greater overhead.
A method for sending system information includes:
A method for receiving system information includes:
A network side device includes:
A terminal includes:
The accompanying drawings herein are used to provide a further understanding for the disclosure, and constitute a part of the specification. Illustrative embodiments of the disclosure and descriptions thereof are used to explain the disclosure, and do not constitute a limitation for the disclosure.
In a creating process of the disclosure, the inventor notices that:
In the embodiments and description, positioning system information and first information thereof are mainly taken as examples. It is more typical to apply a same modulation and coding scheme and a same number of MIMO layers to both the positioning system information and common system information, so the positioning system information and the first information thereof are taken as examples. However, other similar messages and first information of the similar message may also be used. In fact, as long as the modulation and coding mode and the number of MIMO layers of the ordinary system information are used for sending, a greater overhead is likely caused, and even large positioning system information exceeding a limit of a maximum bit number of the system information may also be used. The positioning system information and the first information thereof are merely used to teach those skilled in the art how to implement the disclosure, but not mean that the disclosure is merely applicable to the positioning system information and the first information thereof. An applicable message may be determined with reference to a practical requirement in an implementation process.
In the related art, the same modulation and coding mode and the number of MIMO layers are applied to both the positioning system information and the ordinary system information. However, with the development of a positioning technology, the positioning system information becomes more and more huge. When the modulation mode and the number of MIMO layers of the ordinary system information are also used for sending, a greater overhead may be caused, and even the large positioning system information exceeding the limit of the maximum number of bits of the system information is caused.
Compared with the ordinary system information, the positioning system information has different characteristics.
It needs to be ensured that, all terminals in a cell may receive the ordinary system information at any position and at any moment.
As auxiliary information of the positioning technology, the positioning system information may be used all valid time after being received, without repeated reception.
Based on the above analysis, the positioning system information has characteristics of a large amount of data and not needing to be received by the terminal at any time and any position. Therefore, the positioning system information may be configured with a higher modulation order and/or a larger number of MIMO layers.
Therefore, the embodiments of the disclosure provide methods for sending and receiving the system information. Detailed embodiments of the disclosure are described below with reference to the accompanying drawings.
In the process of description, description is made respectively to implementations of a terminal and a network side, and then an implementation of a cooperation of the terminal and the network side is given to better understand the implementations of the solution given in the embodiments of the disclosure. Such description way does not mean that the terminal and the network side must be implemented together or separately. In fact, the terminal and the network side also solve their own problems when the terminal and the network side are implemented separately, and a better technical effect may be acquired when the terminal and the network side are used together.
At block 101, the network side sends first system information to a terminal, in which the first system information includes first information of a group of second system information, and the first information includes one or a combination of: a control information aggregation level of the second system information, a number of MIMO layers of the second system information, a valid area of the second system information, valid time of the second system information, receiving condition information of the second system information, a modulation and coding scheme (MCS) index indicating a modulation and coding strategy of a PDCCH or a PDSCH of the second system information, a modulation mode of the second system information, a subcarrier spacing for sending the second system information, a sending period of the second system information, encrypted information of the second system information, an encrypted public key of the second system information, and a number of sending repetitions of the second system information.
At block 102, the network side sends the group of second system information to the terminal based on the first information.
At block 201, the terminal receives first system information sent by a network side, in which the first system information includes first information of a group of second system information, and the first information includes one or a combination of: a control information aggregation level of the second system information, a number of MIMO layers of the second system information, a valid area of the second system information, valid time of the second system information, receiving condition information of the second system information, an MCS index indicating a modulation and coding strategy of a PDCCH or a PDSCH of the second system information, a modulation mode of the second system information, a subcarrier spacing for sending the second system information, a sending period of the second system information, encrypted information of the second system information, an encrypted public key of the second system information, and a number of sending repetitions of the second system information.
At block 202, the terminal receives the group of second system information sent by the network side based on the first information.
In detail, the terminal receives the first system information (such as, the ordinary system information) sent by the network side. The first system information includes the first information of the group of second system information, and the group of second system information includes at least one piece of second system information (such as, the positioning system information). That is, several pieces of second system information may also be included, which combine into one group of second system information.
The control information aggregation level refers to an aggregation level of the PDCCH of the second system information, that is, a CCE aggregation level.
The first information may be shared by a part of the group of second system information, or may be applied to a certain piece of system information in the group of second system information alone. In practice, the first information may be named as configuration information, scheduling information, or other names, but there is no doubt that no matter how the first information is named, the implementation of the solution will not be affected.
In detail, the network side sends at least one group of parameters. For example, if the network side sends one modulation order, the modulation order is applied to the second system information. If the network side sends two modulation orders, the two modulation orders are applied to the first system information and the second system information respectively. Because of the characteristic that the positioning system information has a large amount of data, the positioning system information may use the modulation order, the number of MIMO layers and the like which are different from those of the first system information. Therefore, specific parameters may be configured for the second system information, and the first system information may also be configured with parameters or use default parameters.
The first information of the system information may be one or a combination of following information.
1. An MCS index, that is, an MCS identification. The MCS is configured to indicate the modulation and coding scheme of the PDCCH or the PDSCH of the second system information, such as, an MCS-1, an MCS-5, etc. Different MCSs represents different modulation and coding schemes.
2. A modulation mode, that is, a modulation mode of the system information, which may be the modulation mode of the PDCCH and/or the PDSCH, for example, a binary phase shift keying (BPSK), a quadrature phase shift keying (QPSK), a 16 quadrature amplitude modulation (QAM), a 64QAM, a 256QAM, a 1024QAM, etc.
3. The CCE aggregation level. The CCE aggregation level refers to a PDCCH aggregation level of the system information. The CCE aggregation level may affect a coverage of the system information, and the CCE aggregation level may be adjusted based on a target coverage range. For the second system information, due to the large amount of data, a resource overhead may be reduced by configuring an appropriate CCE aggregation level.
4. The number of MIMO layers, that is, the number of MIMO layers of the system information.
5. The subcarrier spacing.
6. A sending period. The sending period refers to the sending period of the system information.
7. Encrypted information, that is, it indicates whether the system information is encrypted and what encrypted way or algorithm is used.
8. An encrypted public key. The encrypted public key is configured for the terminal to decode the second system information.
9. The number of sending repetitions, that is, indicating how many times the system information is repeatedly sent. By repeatedly sending the system information, the terminal receives the system information for many times and joint decodes the system information, which can achieve a better coverage. The number of sending repetitions may be adjusted and reduced based on an actual channel condition to save resources.
10. A valid area, that is, in which area the system information is valid. The valid area may be at least one of: a cell identification, or a tracking area (TA) identification, a geographical area identification, or an altitude or height identification. It may be ensured that the second system information (i.e., the positioning system information) is valid in a specific geographical space, and if the terminal leaves the geographical space, the terminal needs to re-acquire updated second system information.
11. Valid time, that is, the system information is valid within the valid time.
12. Receiving condition information. The “receiving condition information” means that the terminal may receive the second system information only when a receiving condition is met, and does not need to receive the second system information when the receiving condition is not met. The receiving condition includes at least one of: a reference signal received power (RSRP) threshold and a timing advance (TA) threshold. In case that the receiving condition is the RSRP threshold, the terminal may receive the second system information only when an RSRP measured by the terminal exceeds the RSRP threshold. In case that the receiving condition is the TA threshold, the terminal may receive the second system information only when a TA of the terminal is lower than the TA threshold. The second system information may carry a large amount of data by using a higher-order modulation than the first system information. Therefore, the second system information may be received only when the terminal is in a center of a cell with a good signal coverage, and the reception may fail even if the reception is performed at an edge of the cell, so the terminal at the edge of the cell does not need to receive the second system information. That is, in an implementation, after receiving the first system information sent by the network side, the terminal may further perform:
In the embodiments, when the receiving condition information of the second system information includes: the RSRP threshold and/or the TA threshold, the method further includes:
The terminal may use the configuration to receive the system information after receiving the above information in the items 1-9.
After the above information in the items 10 and 11 is received, the terminal may determine whether the second system information stored currently is valid, and whether the second system information is needed to be received again. That is, as long as the second system information stored in the terminal is still valid, the terminal does not need to receive the second system information repeatedly.
For example, the group of second system information includes three pieces of second system information A/B/C. The first information of the second system information carried in the first system information includes the following.
A modulation order of the second system information A is BPSK, and the number of MIMO layers is 2.
A modulation order of the second system information B is 16QAM, and the number of MIMO layers is 4.
A modulation order of the second system information Cis 64QAM, and the number of MIMO layers is 8.
The terminal receives the second system information A/B/C respectively by using the first information after receiving the above information.
In the embodiments, before the terminal receives the first system information sent by the network side, the method further includes:
sending, by the terminal, a request message of the system information or terminal auxiliary information to the network side.
Correspondingly, before the network side sends the first system information to the terminal, the method further includes:
receiving the request message of the system information or the terminal auxiliary information sent by the terminal.
In the embodiments, the request message of the system information or the terminal auxiliary information includes one or a combination of:
In the embodiments, the method further includes:
In a detailed implementation, configuring the first information based on the request message of the system information or the terminal auxiliary information includes:
In detail, the terminal may send the request message of the system information, or called the terminal auxiliary information, to the network side. The request message of the system information is configured to request, such as, one or more pieces of second system information in the group of second system information. Alternatively, the terminal auxiliary information is configured to assist the network side to send the system information.
Accordingly, the network side configures the first information based on the request message of the system information or the terminal auxiliary information.
The request message of the system information includes one or a combination of the following.
Specified system information requested by the terminal.
An MCS request. The terminal requests a specific MCS from the network side or sends a maximum MCS. Requesting the specific MCS refers to requesting the network side to modulate the PDCCH or PDSCH by using the specific MCS. Sending the maximum MCS refers to that the terminal sends the maximum MCS of the terminal in a current channel condition to the network side. The network side receives the MCS requests sent by the plurality of terminals, and the network may select the minimum MCS to modulate the PDCCH or PDSCH, to ensure that as many terminals as possible may decode correctly.
A CCE aggregation level request, configured to assist the network side to select an appropriate CCE aggregation level to send the second system information. What the terminal sends may be its own preferred CCE aggregation level or a minimum CCE aggregation level requirement for ensuring the terminal to correctly decode. The higher the CCE aggregation level, the better the coverage of the PDCCH. The terminal with a good signal may request a lower CCE, and the terminal with a poor signal may request a higher CCE. The network side determines to use a specific CCE aggregation level for sending the second system information after receiving the CCE aggregation level request. One possibility is that the network side may use a maximum CCE aggregation level to ensure that the terminals with good and bad signals may receive the signal.
The modulation order request, configured to the terminal to request the network side to send system information with a specific modulation order. The modulation order may be a modulation order desired by the terminal or a maximum modulation order, that is, the terminal may not decode correctly in the current channel condition when the maximum modulation order is exceeded. After the requests from the plurality of terminals are received, the network side may select the minimum modulation order for sending to ensure that all the terminals may receive the system information, or the network side may select an MCS corresponding to the modulation order. The higher the modulation order, the terminal with a good channel may demodulate correctly, but the terminal with a poor channel may not demodulate correctly. The network side is requested to send the system information using a specific number of MIMO layers.
Request for the network side to send the system information using a specific subcarrier spacing.
Request for the network side to send the system information using a specific period.
Request for the network side to send the system information using a specific encrypted mode.
Request for the network side to send the system information using a specific number of sending repetitions.
In the embodiments, after sending the request message of the system information or the terminal auxiliary information to the network side, the method further includes:
In detail, the terminal may receive the first information of the group of second system information sent by the network side after the terminal sends the request message of the system information. In this way, the terminal may know whether requested system information starts to be broadcast, and if not, the terminal enters the connection state and sends the request message of the system information.
For example, a relationship between the MCS and the modulation order may be:
The terminal may directly request the specific MCS or request the specific modulation order.
When the specific modulation order is requested, a group of MCSs corresponding to the specific modulation order may be applied to the terminal, such as, MCS 10˜16 corresponding to a modulation order 4.
Based on a same inventive concept, the embodiments of the disclosure also provide a network side device, a terminal, and a computer-readable storage medium. Since a principle of solving problems by these devices is similar to that of the method for sending and receiving the system information, implementations of these devices may refer to the implementations of the method, which is not elaborated herein.
The technical solution according to the embodiments of the disclosure may be implemented as follows.
A processor 300 is configured to read a program in a memory 320 to execute:
A transceiver 310 is configured to receive and send data under the control of the processor 300.
In the embodiments, the receiving condition information of the second system information includes: a RSRP threshold and/or a TA threshold.
In the embodiments, before sending the first system information to the terminal, the device further includes:
In the embodiments, the request message of the system information or the terminal auxiliary information includes one or a combination of:
In the embodiments, the device further performs:
In the embodiments, configuring the first information based on the request message of the system information or the terminal auxiliary information includes:
In
The embodiments of the disclosure also provide a network side apparatus, including:
In the embodiments, the first sending module is further configured to send the receiving condition information of the second system information including: an RSRP threshold and/or a TA threshold.
In the embodiments, the receiving module is configured to receive a request message of the system information or terminal auxiliary information sent by the terminal before sending the first system information to the terminal.
In the embodiments, the receiving module is configured to receive the request message of the system information or the terminal auxiliary information including one or a combination of:
In the embodiments, the first sending module is further configured to configure the first information based on the request message of the system information or the terminal auxiliary information.
In the embodiments, when the first sending module is further configured to configure the first information based on the request message of the system information or the terminal auxiliary information, the first sending module is configured to:
For the convenience of description, each part of the above apparatus is divided into various modules or units based on functions and described separately. Functions of each module or unit may be implemented in one or more pieces of software or hardware when the disclosure is implemented.
A processor 400 is configured to read a program in a memory 420 to execute:
A transceiver 410 is configured to receive and send data under a control of the processor 400.
In the embodiments, the receiving condition information of the second system information includes: an RSRP threshold and/or a TA threshold.
In the embodiments, the terminal is further configured to:
In the embodiments, before receiving the first system information sent by the network side, the terminal is further configured to:
In the embodiments, the request message of the system information or the terminal auxiliary information includes one or a combination of:
In the embodiments, after sending the request message of the system information or the terminal auxiliary information to the network side, the terminal is further configured to:
In the embodiments, after receiving the first system information sent by the network side, the terminal is further configured to:
In
The processor 400 is responsible for managing the bus architecture and general processing, and the memory 420 may store data used by the processor 400 when performing operations.
The embodiments of the disclosure further provide a terminal, including.
In the embodiments, the first receiving module is further configured to receive the receiving condition information of the second system information including an RSRP threshold and/or a TA threshold.
In the embodiments, the second receiving module is further configured to receive the second system information when an RSRP measured by the terminal exceeds the RSRP threshold; and/or
In the embodiments, the terminal further includes:
In the embodiments, the sending module is further configured to send the request message of the system information or the terminal auxiliary information including one or a combination of:
In the embodiments, the sending module is further configured to receive the first information of the group of second system information sent by the network side after sending the request message of the system information or the terminal auxiliary information to the network side, to enter a connection state when the first system information is not received, and to send the request message of the system information or the terminal auxiliary information to the network side.
In the embodiments, the second receiving module is further configured to determine whether to receive the second system information based on the receiving condition information of the second system information in the first information after receiving the first system information sent by the network side.
For the convenience of description, each part of the above apparatus is divided into various modules or units based on functions and described separately. Functions of each module or unit may be implemented in one or more pieces of software or hardware when the disclosure is implemented.
The embodiments of the disclosure also provide a computer-readable storage medium. The computer-readable storage medium has a computer program stored thereon. The computer program is executed by a processor to implement the method for sending and/or receiving the system information.
For a detailed implementation, please refer to the implementations of the method for sending the system information in the network side and/or the method for receiving the system information in the terminal side.
In conclusion, in the technical solution according to the embodiments of the disclosure, there is provided a solution that the terminal receives the first information of the group of second system information sent by the network side, and the terminal sends the request message of the system information to the network side.
In the related art, the same modulation and coding mode and the same number of MIMO layers are applied to both the positioning system information and an ordinary system information. However, with the development of the positioning technology, the positioning system information becomes more and more huge. If a modulation mode of and a number of MIMO layers the ordinary system information are also used for sending, a greater overhead may be caused, and even large positioning system information exceeding a limit of a maximum bit number of the system information is caused.
For the positioning system information with a large amount of data, but the terminal does not need to receive the positioning system information at any time and any place, the solution configures the positioning system information with a higher modulation order and/or a larger number of MIMO layers, to achieve an efficient sending and reception of the system information.
It should be understood by those skilled in the art that, the embodiments of the disclosure may be provided as a method, a system, or a computer program product. Therefore, the disclosure may use a form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination with software and hardware aspects. Moreover, the disclosure may use a form of a computer program product implemented on one or more computer usable storage medium (including but not limited to, a magnetic disk memory and an optical memory, etc.) including computer usable program codes therein.
The disclosure is described with reference to the flowcharts and/or the block diagrams of methods, devices (systems), and computer program products according to the embodiments of the disclosure. It should be understood that, each flow and/or block in the flowchart and/or block diagram, and combinations of the flow and/or block in the flowchart and/or block diagram may be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, such that the instructions are executed by the processor of the computer or other programmable data processing device to generate a device for implementing a function specified by one or more flows in the flow chart, and/or one or more blocks in the block diagram.
These computer program instructions may also be stored in a computer-readable memory that may direct a computer or other programmable data processing device to work in a particular manner, such that the computer program instructions stored in the computer-readable memory produce a manufacture product including an instruction device that implement the functions specified in one or more flow in the flowchart and/or one or more blocks in the block diagram.
These computer program instructions may also be loaded into the computer or other programmable data processing device, such that a series of operational steps are performed on the computer or other programmable data processing device to produce a computer-implemented process, such that the instructions executed in the computer or other programmable data processing device provide steps for implementing the functions specified by one or more flows in the flowchart and/or one or more blocks in the block diagram. Obviously, those skilled in the art may make various modifications and variations to the disclosure without departing from a spirit and scope of the disclosure. In this way, when these modifications and variations of the disclosure are within a scope of claims of the disclosure and their equivalents, the disclosure is also intended to include these modifications and variations.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202210114405.2 | Jan 2022 | CN | national |
This application is the U.S. national phase application of International Application No. PCT/CN2023/072875, filed on Jan. 18, 2023, which is based upon and claims priority to Chinese Patent Application No. 202210114405.2, filed with the State Intellectual Property Office of P. R. China on Jan. 30, 2022, the entire contents of which are incorporated herein by reference for all purposes.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2023/072875 | 1/18/2023 | WO |
