System information acquisition method, data transmission method, and related device

Abstract

Embodiments of the present application relate to the technical field of communications, and provide a system information acquisition method, a data transmission method, and a related device. The method is applied to a terminal device that supports a first on-demand system information block type 1 (OD-SIB1). The method comprises: receiving a request configuration parameter, wherein the request configuration parameter is used for requesting acquisition of a first system information block type 1 (SIB1) of a target cell, and the target cell supports a first OD-SIB1; and if there is uplink data that needs to be transmitted in the target cell, on the basis of the request configuration parameter, requesting acquisition of the first SIB1 of the target cell. In the embodiments of the present application, when there is an uplink data transmission requirement, a terminal device directly requests an SIB1 from a target cell, and the terminal device does not need to detect and determine a current transmission status of the SIB1, thereby improving the UE data transmission efficiency in a scenario where the SIB1 is not being transmitted.

Description

Method for acquiring system information, data transmission method and related device

[0001] The present application claims priority from the Chinese patent application No. 202411346388.0 filed on September 25, 2024, and entitled "Method for acquiring system information, data transmission method and related device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, in particular to a method for acquiring system information, a data transmission method and related devices. BACKGROUND

[0003] With the large-scale construction of the fifth generation (5th Generation, 5G) mobile network, the energy consumption of the wireless communication network has increased significantly. Based on the demand for green energy saving of the 5G network, a scheme of non-continuous transmission of the first system information block (System Information Block Type1, SIB1) is provided in the network energy saving (Network Energy Saving, NES) issue. The scheme allows the SIB1 to be transmitted after receiving the request of the user equipment (User Equipment, UE), and the scheme can also be called on-demand first system information block (On Demand SIB1, OD-SIB1). By reducing the transmission occasion of SIB1 on the network side, the purpose of network energy saving can be achieved. The cell based on the request of the UE to transmit SIB1 is called network energy saving cell (NES Cell).

[0004] However, since the transmission of SIB1 in the NES Cell needs to be based on the request of the UE, for the UE that has uplink data to be transmitted, the UE needs to first detect the transmission state of SIB1 in the current network, and if SIB1 is not in the transmission state, the UE needs to request to acquire SIB1 to realize data transmission. In this way, the acquisition time of SIB1 causes the transmission delay of uplink data, which may affect the service experience of the user. SUMMARY

[0005] The present application provides a method for acquiring system information, a data transmission method and related devices, aiming to improve the data transmission efficiency of terminal devices in the scenario of supporting on-demand first system information block.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] The first aspect of the present application provides a system information acquisition method, which is applied to a terminal device supporting on-demand first system information block (OD-SIB1), and the method comprises the following steps: receiving a request configuration parameter, wherein the request configuration parameter is used to request acquisition of first system information block (SIB1) of a target cell, and the target cell supports OD-SIB1; and if there is uplink data to be transmitted in the target cell, the first system information block (SIB1) of the target cell is requested to be acquired based on the request configuration parameter.

[0008] In the present application, when the terminal device determines that there is uplink data to be transmitted in the target cell, the terminal device does not need to detect and determine whether the first system information SIB1 is in a transmitting state, and directly requests the SIB1 from the target cell. Compared with the method of detecting and determining that the first system information SIB1 of the target cell is not in a transmitting state and then requesting the first system information SIB1 from the target cell, the first system information SIB1 of the target cell can be more efficiently acquired for uplink data transmission, and the data transmission efficiency of the terminal device in the scenario of supporting OD-SIB1 can be improved.

[0009] It can be understood that after the terminal device acquires the SIB1 of the target cell, the terminal device can establish a radio resource control (RRC) connection with the target cell based on the SIB1 to carry out subsequent uplink data transmission services, because the SIB1 provides necessary system information and resource configuration.

[0010] Unless otherwise specified, the terminal device in the present application can refer to the terminal device itself, a component (for example, a processor, a chip, or a chip system) in the terminal device, or a logic module or software capable of realizing all or part of the functions of the terminal device. The execution subject of the system information acquisition method in the present application is not limited.

[0011] In some possible implementation manners, the request configuration parameter comprises a first request configuration parameter and a second request configuration parameter, the first request configuration parameter is used to request acquisition of the first system information block (SIB1) of the target cell based on uplink data transmission demand, and the request acquisition of the first system information block (SIB1) of the target cell based on the request configuration parameter comprises: requesting acquisition of the first system information block (SIB1) of the target cell based on a target request configuration parameter, and the target request configuration parameter comprises the first request configuration parameter.

[0012] In the embodiments of the present application, the request configuration parameter includes a first request configuration parameter and a second request configuration parameter, and the first request configuration parameter is used to request to acquire the first system information block SIB1 of the target cell based on the uplink data transmission requirement. It can be seen that in the embodiments of the present application, the terminal device is configured with at least two sets of request configuration parameters, and the terminal device can request to acquire the SIB1 based on the target request configuration parameter including the first set of request configuration parameters (i.e. the first request configuration parameter) in the case of having uplink data transmission requirement. Compared with the second set of request configuration parameters (i.e. the second request configuration parameter), the target request configuration parameter including the first request configuration parameter can more quickly acquire the first system information block SIB1, thereby improving the data transmission efficiency of the terminal device in the scenario of having uplink data transmission requirement.

[0013] It should be noted that the first request configuration parameter and the second request configuration parameter can be indicated and configured by the network device.

[0014] In some possible implementation manners, the target request configuration parameter further includes the second request configuration parameter.

[0015] In the embodiments of the present application, the target parameter used to request to acquire the first system information block SIB1 includes various information such as an access preamble, an access occasion, a power ramping step and the like. When the terminal device has uplink data to be transmitted in the target cell, the terminal device requests to acquire the first system information block SIB1 of the target cell based on the target request configuration parameter. The target request configuration parameter should at least include a first request configuration parameter. At this time, the target request configuration parameter can further include a second request configuration parameter. For example, the target request configuration parameter includes a first access preamble, a second access occasion and a second power ramping step. The first access preamble belongs to the first request configuration parameter, and the second access occasion and the second power ramping step belong to the second request configuration parameter.

[0016] It can be understood that the target request configuration parameter can only include the first request configuration parameter and does not include the second request configuration parameter. The embodiments of the present application do not make any limitation, and the skilled person can make corresponding settings based on the business requirement.

[0017] In some possible implementation manners, if the terminal device has uplink data to be transmitted in the target cell, the terminal device includes that the target cell meets a data transmission measurement threshold.

[0018] In the embodiments of the present application, the condition that the terminal device determines that there is uplink data to be transmitted in the target cell can include that the measurement result of the target cell meets a data transmission measurement threshold. The data transmission measurement threshold can indicate the minimum transmission rate and / or reception and transmission quality requirement that the terminal device needs to meet for transmitting data in the target cell, wherein the transmission quality requirement can be a measurement result such as a reference signal received power (RSRP), a reference signal receiving quality (RSRQ), and the like. The data transmission measurement threshold can be set according to the actual needs of the service. Alternatively, the condition that the terminal device determines that there is uplink data to be transmitted in the target cell can also include that the target cell meets the cell reselection criteria, such as a path loss criterion, a signal strength criterion, a quality criterion, a priority criterion, and the like, which are not limited in the embodiments of the present application. It can be understood that the specific value of the data transmission measurement threshold is not limited in the embodiments of the present application, and a skilled person can set it according to the actual needs of the service.

[0019] In the embodiments of the present application, the uplink data transmission requirement of the terminal device can include that the terminal device receives an indication of an upper layer, that the terminal device has data to be transmitted in an access stratum (AS), that the terminal device receives an indication of the network side, such as paging, that the terminal device needs to receive downlink data, that the terminal device needs to receive emergency system information such as a public warning system (PWS), and the like, which are not limited in the embodiments of the present application.

[0020] In some possible implementation manners, the method further includes: if there is no uplink data to be transmitted in the target cell, requesting to acquire a first system information block (SIB1) of the target cell based on the second request configuration parameter.

[0021] In the embodiments of the present application, if there is no uplink data to be transmitted in the target cell, the terminal device can select the second request configuration parameter to request to acquire the first system information block (SIB1) of the target cell. Since the terminal device has no data transmission requirement in the target cell, the terminal device can request the first system information block (SIB1) of the target cell based on the second request configuration parameter. Compared with requesting the first system information block (SIB1) based on the first request configuration parameter, the target cell can quickly respond to the SIB1 acquisition request with uplink data transmission requirement, and the fast response here is relative to the response to the SIB1 acquisition request based on the second request configuration parameter, which can ensure that the requirement of the terminal device to acquire the SIB1 is responded in time, and does not affect the business development of the terminal device in the target cell.

[0022] Therefore, in the embodiment of the present application, the terminal device is configured with the first request configuration parameter and the second request configuration parameter, the priority degree of the terminal device requesting the first system information block SIB1 based on the first request configuration parameter is higher than the priority degree of the terminal device requesting the first system information block SIB1 based on the second request configuration parameter, and the terminal device can select the corresponding request configuration parameter to request to acquire the first system information block SIB1 based on the current data transmission requirement, thereby ensuring the data transmission efficiency of the terminal device.

[0023] In some possible implementation manners, the request configuration parameter comprises at least one of the following information: an access preamble, an access occasion, a power ramping step, a repetition number of the access preamble, a first system information block SIB1 request number, a transmission period of the first system information block SIB1, a time interval from transmitting the access preamble to a response of the network, a duration of a response window, and a reception window duration of the first system information block SIB1.

[0024] In the embodiment of the present application, the request configuration parameter can be sent by the network device to the terminal device for configuration, and a person skilled in the art can set the request configuration parameter according to the service requirement. For example, different first request configuration parameters and second request configuration parameters can be set for different uplink service transmission requirements. For example, for the access preamble, the first request configuration parameter can be set as a first access preamble, and the second request configuration parameter can be set as a second access preamble. The first access preamble and the second access preamble can be different in format, or the cyclic prefix of the access preamble is different, or the sequence of the access preamble is different. For the power ramping step, the first request configuration parameter can be set as a first power ramping step, and the second request configuration parameter can be set as a second power ramping step. The first power ramping step is greater than the second power ramping step. In the embodiment of the present application, the first request configuration parameter and the second request configuration parameter are different in parameter configuration, and the present application does not limit the specific setting mode of the first request configuration parameter and the second request configuration parameter, and a person skilled in the art can set them in combination with the actual communication service.

[0025] In some possible implementation manners, the first request configuration parameter comprises a first access preamble, and the second request configuration parameter comprises a second access preamble. The requesting to acquire the first system information block SIB1 of the target cell based on the target request configuration parameter comprises: transmitting the first access preamble. The requesting to acquire the first system information block SIB1 of the target cell based on the second request configuration parameter comprises: transmitting the second access preamble.

[0026] In the embodiments of the present application, the terminal device realizes different acquisition rates of SIB1 by sending different access preambles. When the terminal device sends the first access preamble, the target cell receiving the first access preamble can know that the terminal device currently has the transmission demand of uplink data, at this time, the target cell can respond to the SIB1 acquisition demand of the terminal device more quickly, so as to ensure that the terminal device can acquire SIB1 more quickly. When the terminal device sends the second access preamble, the target cell receiving the second access preamble can know that the terminal device currently does not have the transmission demand of uplink data, that is, the timeliness demand of the terminal device for acquiring SIB1 is lower than the timeliness demand of the terminal device for acquiring SIB1 when the terminal device has the transmission demand of uplink data, at this time, the target cell can first respond to the service demand with higher priority or higher emergency, and then respond to the acquisition request of SIB1 of the terminal device. It can be understood that when there is no service demand with higher priority or higher emergency in the target cell, the target cell can directly respond to the acquisition request of SIB1 of the terminal device.

[0027] In some possible implementation ways, the first request configuration parameter comprises a first access occasion, and the second request configuration parameter comprises a second access occasion; the acquiring the first system information block SIB1 of the target cell based on the target request configuration parameter comprises: sending a first system information request at the first access occasion; and the acquiring the first system information block SIB1 of the target cell based on the second request configuration parameter comprises: sending a first system information request at the second access occasion; wherein the first system information request is used to request to acquire the first system information block SIB1 of the target cell.

[0028] In the embodiments of the present application, the terminal device can select to send the first system information request at different access occasions, so as to realize different acquisition rates of SIB1. When the terminal device sends the first system information request at the first access occasion, the target cell determines that the terminal device currently has the transmission demand of uplink data based on the time of acquiring the first system information request, at this time, the target cell can respond to the SIB1 acquisition demand of the terminal device more quickly, so as to ensure that the terminal device can acquire SIB1 more quickly. When the terminal device sends the first system information request at the second access occasion, the target cell determines that the terminal device currently does not have the transmission demand of uplink data based on the time of acquiring the first system information request, at this time, the target cell can first respond to the service demand with higher priority or higher emergency, and then respond to the acquisition request of SIB1 of the terminal device.

[0029] In some possible implementation manners, the first request configuration parameter comprises a first power ramping step, and the second request configuration parameter comprises a second power ramping step; the first power ramping step is greater than the second power ramping step; the obtaining, based on the target request configuration parameter, of the first system information block SIB1 of the target cell comprises: determining a first sending power based on the first power ramping step, and sending a first system information request based on the first sending power; the obtaining, based on the second request configuration parameter, of the first system information block SIB1 of the target cell comprises: determining a second sending power based on the second power ramping step, and sending a first system information request based on the second sending power; the first system information request is used to request the first system information block SIB1 of the target cell.

[0030] In the embodiments of the present application, the terminal device can determine the sending power of the first system information request based on different power ramping steps, so as to achieve different obtaining rates of the SIB1. After a round of request for obtaining the SIB1 fails, the terminal device will determine a new sending power based on the power ramping step, and request the SIB1 based on the newly determined sending power. Since the first power ramping step is greater than the second power ramping step, the sending power determined based on the first power ramping step is greater than the sending power determined based on the second power ramping step. That is, the terminal device can determine the sending power of the first system information request based on a greater power ramping step in the case of having uplink data transmission demand. The greater sending power can make the signal penetrate more obstacles and cover a wider area, so that the success rate of the target cell receiving the first system information request is higher, thereby making the rate of obtaining the SIB1 based on the sending power determined based on the first power ramping step faster than the rate of obtaining the SIB1 based on the sending power determined based on the second power ramping step.

[0031] In some possible implementation manners, the first request configuration parameter comprises a first repetition number of an access preamble, and the second request configuration parameter comprises a second repetition number of an access preamble; the first repetition number is greater than the second repetition number; the obtaining, based on the target request configuration parameter, of the first system information block SIB1 of the target cell comprises: sending the access preamble according to the first repetition number; the obtaining, based on the second request configuration parameter, of the first system information block SIB1 of the target cell comprises: sending the access preamble according to the second repetition number.

[0032] In the embodiments of the present application, the terminal device can send the access preamble based on different repetition numbers of the access preamble, so as to achieve different acquisition rates of the SIB1. When the terminal device has an uplink data transmission requirement, the terminal device can send the access preamble according to the first repetition number; when the terminal device does not have an uplink data transmission requirement, the terminal device can send the access preamble according to the second repetition number. Since the first repetition number is greater than the second repetition number, that is, the terminal device in the case of having an uplink data transmission requirement can select a transmission mode of the access preamble with more repetition numbers than in the case of not having an uplink data transmission requirement, the transmission mode of the access preamble with more repetition numbers can ensure that the target cell receives the access preamble in time and feeds back the SIB1 in time, so that the terminal device in the case of having an uplink data transmission requirement can acquire the SIB1 more quickly by sending the access preamble with the first repetition number.

[0033] In some possible implementation ways, the first request configuration parameter includes a first request number of a first system information block SIB1, and the second request configuration parameter includes a second request number of the first system information block SIB1; the first request number is greater than the second request number; the acquiring the first system information block SIB1 of the target cell based on the target request configuration parameter includes sending a first system information request according to a requirement of the first request number; and the acquiring the first system information block SIB1 of the target cell based on the second request configuration parameter includes sending a first system information request according to a requirement of the second request number; the first request number and the second request number are used to limit a sending number of the first system information request, and the first system information request is used to request to acquire the first system information block SIB1 of the target cell.

[0034] In the embodiments of the present application, the terminal device can send the access preamble based on different repetition numbers of the access preamble, so as to achieve different acquisition rates of the SIB1. When the terminal device has an uplink data transmission requirement, the terminal device can send the access preamble according to the first repetition number; when the terminal device does not have an uplink data transmission requirement, the terminal device can send the access preamble according to the second repetition number. Since the first repetition number is greater than the second repetition number, that is, the terminal device in the case of having an uplink data transmission requirement can select a transmission mode of the access preamble with more repetition numbers than in the case of not having an uplink data transmission requirement, the transmission mode of the access preamble with more repetition numbers can ensure that the target cell receives the access preamble in time and feeds back the SIB1 in time, so that the terminal device in the case of having an uplink data transmission requirement can acquire the SIB1 more quickly by sending the access preamble with the first repetition number.

[0035] In some possible implementation manners, the first request configuration parameter comprises a first time interval for sending an access preamble to a network response and a first response window duration, and the second request configuration parameter comprises a second time interval for sending an access preamble to a network response and a second response window duration; the first time interval is less than the second time interval, and / or the first response window duration is less than the second response window duration; the requesting for obtaining the first system information block SIB1 of the target cell based on the target request configuration parameter comprises determining a first response receiving opportunity according to the first time interval and the first response window duration, and receiving a response for requesting for obtaining the first system information block SIB1 of the target cell at the first response receiving opportunity; the requesting for obtaining the first system information block SIB1 of the target cell based on the second request configuration parameter comprises determining a second response receiving opportunity according to the second time interval and the second response window duration, and receiving a response for requesting for obtaining the first system information block SIB1 of the target cell at the second response receiving opportunity.

[0036] In the embodiments of the present application, the terminal device realizes different obtaining rates of SIB1 based on different time intervals for sending an access preamble to a network response and response window durations. When the terminal device has an uplink data transmission requirement, the terminal device determines a first response receiving opportunity according to the first time interval and the first response window duration, and receives a response for requesting for obtaining SIB1 at the first response receiving opportunity; when the terminal device does not have an uplink data transmission requirement, the terminal device determines a second response receiving opportunity according to the second time interval and the second response window duration, and receives a response for requesting for obtaining SIB1 at the second response receiving opportunity; since the first time interval is less than the second time interval and / or the first response window duration is less than the second response window duration, the first response receiving opportunity is earlier than the second response receiving opportunity, and compared with receiving a response for requesting for obtaining SIB1 based on the second response receiving opportunity, the terminal device can receive the response for requesting for obtaining SIB1 based on the first response receiving opportunity more quickly, and accordingly can obtain SIB1 more quickly.

[0037] In some possible implementation manners, the first request configuration parameter comprises a first receiving window duration of the first system information block SIB1, and the second request configuration parameter comprises a second receiving window duration of the first system information block SIB1; the first receiving window duration is less than the second receiving window duration; the requesting for obtaining the first system information block SIB1 of the target cell based on the target request configuration parameter comprises receiving the first system information block SIB1 of the target cell within the first receiving window duration; the requesting for obtaining the first system information block SIB1 of the target cell based on the second request configuration parameter comprises receiving the first system information block SIB1 of the target cell within the second receiving window duration.

[0038] In the embodiments of the present application, the terminal device realizes different acquisition rates of acquiring SIB1 based on different receiving window durations. When the terminal device has uplink data transmission demand, the terminal device selects to receive SIB1 within the first receiving window duration; when the terminal device does not have uplink data transmission demand, the terminal device selects to receive SIB1 within the second receiving window duration; since the first receiving window duration is less than the second receiving window duration, the terminal device can receive SIB1 within a shorter time window and perform subsequent data transmission procedures, and accordingly can acquire SIB1 more quickly.

[0039] In some possible implementation ways, the first request configuration parameter includes a first transmission period of a first system information block SIB1, and the second request configuration parameter includes a second transmission period of the first system information block SIB1; wherein the first transmission period is less than the second transmission period; the acquiring the first system information block SIB1 of the target cell based on the target request configuration parameter includes acquiring the first system information block SIB1 of the target cell according to the first transmission period; and the acquiring the first system information block SIB1 of the target cell based on the second request configuration parameter includes acquiring the first system information block SIB1 of the target cell according to the second transmission period.

[0040] In the embodiments of the present application, the terminal device acquires SIB1 based on different SIB1 transmission periods, to realize different acquisition rates of acquiring SIB1. When the terminal device has uplink data transmission demand, the terminal device can receive and acquire SIB1 based on a first transmission period; when the terminal device does not have uplink data transmission demand, the terminal device can receive and acquire SIB1 based on a second transmission period; since the first transmission period is less than the second transmission period, that is, under the first transmission period, the terminal device receives and acquires SIB1 at a higher frequency, compared with receiving and acquiring SIB1 according to the second transmission period, the terminal device can acquire SIB1 more quickly by receiving and acquiring SIB1 according to the first transmission period.

[0041] In some possible implementation ways, the method further includes: if there is no uplink data to be transmitted in the target cell, and the first system information block SIB1 of the target cell is in a transmission state, receiving the first system information block SIB1 of the target cell; and if there is no uplink data to be transmitted in the target cell, and the first system information block SIB1 of the target cell is not in a transmission state, acquiring the first system information block SIB1 of the target cell based on the request configuration parameter.

[0042] In the embodiments of the present application, when the terminal device has no uplink data transmission requirement, the terminal device can further detect and determine whether the SIB1 of the target cell is in a sending state, for example, other terminal devices in the target cell request the SIB1, the current SIB1 is in a sending state, for example, the SIB1 of the target cell is changed in the previous change period, and the current SIB1 is in a sending state, and the like; when the terminal device determines that the current SIB1 is in a sending state, the terminal device does not need to separately request to acquire the SIB1, and directly receives the SIB1; when the terminal device determines that the current SIB1 is not in a sending state, the terminal device requests to acquire the SIB1 based on the request configuration parameter again.

[0043] In some possible implementation manners, the request configuration parameter includes a first request configuration parameter and a second request configuration parameter; the first request configuration parameter is used to request to acquire the first system information block SIB1 of the target cell based on the uplink data transmission requirement; the step of requesting to acquire the first system information block SIB1 of the target cell based on the request configuration parameter if there is uplink data to be transmitted in the target cell includes the following steps: requesting to acquire the first system information block SIB1 based on the first request configuration parameter if there is uplink data to be transmitted in the target cell; the step of requesting to acquire the first system information block SIB1 of the target cell based on the request configuration parameter if there is no uplink data to be transmitted in the target cell and the first system information block SIB1 of the target cell is not in a sending state includes the following step: requesting to acquire the first system information block SIB1 based on the second request configuration parameter if there is no uplink data to be transmitted in the target cell and the first system information block SIB1 of the target cell is not in a sending state.

[0044] In the embodiments of the present application, the request configuration parameter includes a first request configuration parameter and a second request configuration parameter, the first request configuration parameter is used to request to acquire a first system information block (SIB1) of a target cell based on uplink data transmission demand, when the terminal device has uplink data transmission demand, the terminal device can request to acquire the SIB1 based on the target request configuration parameter including the first request configuration parameter, when the terminal device does not have uplink data transmission demand, and it is judged that the current SIB1 is not in a sending state, the terminal device can request to acquire the SIB1 based on the second request configuration parameter. As can be seen, in the embodiments of the present application, the terminal device acquires the SIB1 based on the first request configuration parameter in the case of having uplink data transmission demand, thereby the data transmission efficiency of the terminal device in the case of having uplink data transmission demand can be improved; in the case of not having uplink data transmission demand, and the current SIB1 is not in a sending state, the terminal device requests to acquire the SIB1 based on the second request configuration parameter, compared with requesting the first system information block (SIB1) based on the first request configuration parameter, the resources of the target cell can respond to the service demand with higher priority first, and then respond to the SIB1 acquisition request based on the second request configuration parameter, so that the demand of the terminal device for acquiring the SIB1 is responded without affecting the business development of the target cell.

[0045] The second aspect of the present application provides a data transmission method, the method is applied to a terminal device, the terminal device supports on-demand first system information block (OD-SIB1), and the method includes: if there is uplink data to be transmitted in a target cell, and the first system information block (SIB1) of the target cell needs to be acquired or has not been acquired, the uplink data is transmitted through the serving cell; wherein the serving cell is a cell currently serving the terminal device, the target cell supports on-demand first system information block (OD-SIB1), and the serving cell meets a data transmission measurement threshold.

[0046] In the embodiments of the present application, when the terminal device has uplink data transmission demand and has not acquired or needs to acquire the SIB1 of the target cell, the terminal device directly transmits the uplink data through the serving cell currently providing service for the terminal device. As can be seen, in the embodiments of the present application, in order to quickly respond to the uplink data transmission demand, the terminal device temporarily suspends the acquisition of the SIB1 of the target cell, and first transmits the uplink data through the current serving cell, thereby ensuring the data transmission efficiency of the terminal device. The serving cell satisfies a data transmission measurement threshold, and the data transmission measurement threshold can indicate the minimum transmission rate and / or reception and transmission quality requirement that the terminal device needs to satisfy when transmitting data on the serving cell, wherein the transmission quality requirement can be a measurement result such as RSRP, RSRQ, and the like, and the data transmission measurement threshold can be set according to actual business requirements. Optionally, the target cell can also satisfy the cell reselection criteria, such as the path loss criterion, the signal strength criterion, the quality criterion, the priority criterion, and the like, which are not limited in the embodiments of the present application. It can be understood that the embodiments of the present application do not limit the specific value of the data transmission measurement threshold, and the skilled in the art can set it according to actual business requirements.

[0047] Unless specifically stated otherwise, the "terminal device" in the present application can refer to the terminal device itself, a component (for example, a processor, a chip, or a chip system, etc.) in the terminal device, or a logical module or software capable of realizing all or part of the sending end function. The present application does not limit the execution subject of the data transmission method.

[0048] In some possible implementation manners, the target cell satisfies a signal quality measurement threshold.

[0049] Further, the terminal device has uplink data transmission demand in the target cell, and therefore, the target cell should satisfy the signal quality measurement threshold. In the case where the target cell satisfies the signal quality measurement threshold, the terminal device can reselect to the target cell for data transmission.

[0050] Optionally, the condition that the terminal device determines that there is uplink data to be transmitted in the target cell can also include that the target cell satisfies the cell reselection criteria or the quality measurement requirement for uplink data transmission, such as the path loss criterion, the signal strength criterion, the quality criterion, the priority criterion, and the like, which are not limited in the embodiments of the present application. It can be understood that the embodiments of the present application do not limit the specific value of the signal quality measurement threshold, and the skilled in the art can set it according to actual business requirements. It should be noted that the signal quality measurement threshold in the embodiments of the present application can be configured as the same threshold value as the data transmission measurement threshold, or can be configured as different threshold values, for example, the data transmission measurement threshold is set to be higher than the signal quality measurement threshold.

[0051] In some possible implementation manners, the method further includes: sending first indication information based on radio resource control (RRC) signaling, where the first indication information is used to indicate at least one of the following: the target cell is a candidate cell, a signal quality measurement result of the target cell, and the terminal device needs to acquire a first system information block (SIB1) of the target cell.

[0052] In the embodiments of the present application, the terminal device can indicate, through RRC signaling, that the target cell is a candidate cell, that is, the target cell meets the data transmission measurement threshold and / or the cell reselection criterion. The terminal device can also indicate, through RRC signaling, the signal measurement result of the target cell or indicate that the terminal device needs to acquire the SIB1 of the target cell, that is, inform the serving cell that the terminal device currently intends to reselect to the target cell, but due to the timeliness requirement of data transmission, the terminal device currently establishes a connection with the serving cell for transmission, so as to avoid affecting the service.

[0053] It can be understood that, before the terminal device transmits uplink data through the serving cell, the terminal device needs to first establish or resume the RRC connection with the serving cell, so as to subsequently carry out the uplink data transmission service.

[0054] The third aspect of the present application provides a system information acquisition method, which is applied to a network device, the network device belongs to a serving cell, the serving cell is a cell currently serving a terminal device, and the method includes the following steps.

[0055] sending a request configuration parameter, where the request configuration parameter is used for the terminal device to request to acquire a first system information block (SIB1) of a target cell, the access parameter includes a first request configuration parameter and a second request configuration parameter, the first request configuration parameter is used for the terminal device to request to acquire the first system information block (SIB1) of the target cell based on an uplink data transmission requirement, and the target cell supports on-demand first system information (OD-SIB1).

[0056] In the embodiments of the present application, the network device can send a request configuration parameter to the terminal device, the request configuration parameter includes at least two sets of request configuration parameters, so that the terminal device can configure the two sets of request configuration parameters, where the first set of request configuration parameters (that is, the first request configuration parameter) can be used to request the target cell to acquire the SIB1 when the terminal device has an uplink data transmission requirement, and compared with the second set of request configuration parameters (that is, the second request configuration parameter), the target request configuration parameter including the first request configuration parameter can more quickly acquire the first system information block (SIB1), thereby improving the data transmission efficiency of the terminal device in the scenario of having an uplink data transmission requirement.

[0057] In the case where it is not specially stated, the "network device" in the present application can refer to the network device itself, a component (for example, a processor, a chip, or a chip system, etc.) in the network device, or a logic module or software capable of realizing all or part of the sending end function. The present application does not limit the execution subject of the system information acquisition method.

[0058] In some possible implementation manners, the request configuration parameter comprises at least one of the following information: an access preamble, an access occasion, a power ramping step, a repetition number of the access preamble, a first system information block SIB1 request number, a transmission period of the first system information block SIB1, a time interval from sending the access preamble to a response of the network, a length of a response window, and a length of a reception window of the first system information block SIB1.

[0059] In the embodiments of the present application, the request configuration parameter can be sent by the network device to the terminal device for configuration. A person skilled in the art can set the request configuration parameter according to the business requirement, and accordingly set the corresponding first request configuration parameter and the second request configuration parameter. For example, for the access preamble, the first request configuration parameter can be set as a first access preamble, and the second request configuration parameter can be set as a second access preamble. The first access preamble and the second access preamble can be different in format, or the cyclic prefix of the access preamble, or the sequence of the access preamble. For the power ramping step, the first request configuration parameter can be set as a first power ramping step, and the second request configuration parameter can be set as a second power ramping step. The first power ramping step is greater than the second power ramping step. In the embodiments of the present application, the first request configuration parameter and the second request configuration parameter are different in parameter configuration. The present application does not limit the specific setting mode of the first request configuration parameter and the second request configuration parameter, and a person skilled in the art can set them in combination with the actual communication business.

[0060] The fourth aspect of the present application provides a terminal device supporting on-demand first system information block OD-SIB1, the terminal device comprising:

[0061] a parameter receiving module configured to receive a request configuration parameter, the request configuration parameter being used to request to acquire a first system information block SIB1 of a target cell, the target cell supporting on-demand first system information block OD-SIB1;

[0062] an information acquisition module configured to, when there is uplink data to be transmitted in the target cell, request to acquire the first system information block SIB1 of the target cell based on the request configuration parameter.

[0063] In a fourth aspect of the present disclosure, the terminal device can further perform the steps described in the first aspect and the possible implementation manners, details of which are described above in the first aspect and the possible implementation manners.

[0064] In a fifth aspect of the present disclosure, a terminal device is provided, which supports on-demand first system information block (OD-SIB1), and the terminal device comprises:

[0065] a data transmission module, configured to, when there is uplink data to be transmitted in a target cell and the first system information block (SIB1) of the target cell needs to be acquired or has not been acquired, transmit the uplink data through the serving cell, wherein the serving cell is a cell currently serving the terminal device, the target cell supports the OD-SIB1, and the serving cell satisfies a data transmission measurement threshold.

[0066] In the fifth aspect of the present disclosure, the terminal device can further perform the steps described in the second aspect and the possible implementation manners, details of which are described above in the second aspect and the possible implementation manners.

[0067] In a sixth aspect of the present disclosure, a network device is provided, which belongs to a serving cell, the serving cell is a cell currently serving a terminal device, and the network device comprises:

[0068] a parameter sending module, configured to send a request configuration parameter, the request configuration parameter being used for the terminal device to request to acquire the first system information block (SIB1) of the target cell, and the access parameter comprising a first request configuration parameter and a second request configuration parameter; wherein the first request configuration parameter is used for the terminal device to request to acquire the first system information block (SIB1) of the target cell based on uplink data transmission demand, and the target cell supports the OD-SIB1.

[0069] In the sixth aspect of the present disclosure, the terminal device can further perform the steps described in the third aspect and the possible implementation manners, details of which are described above in the third aspect and the possible implementation manners.

[0070] In a seventh aspect of the present disclosure, a communication apparatus is provided, comprising a processor and a memory, the memory is configured to store a computer program, and the processor is configured to execute the computer program stored in the memory, so that the communication apparatus implements the system information acquisition method provided in the first aspect or the second aspect or the third aspect of the present disclosure.

[0071] In a seventh aspect of the present application, the constituent module of the communication apparatus can also perform the steps described in the first aspect or the second aspect or the third aspect and various possible implementation manners, for details, refer to the description of the first aspect or the second aspect or the third aspect and various possible implementation manners.

[0072] An eighth aspect of the present application provides a computer storage medium for storing a computer program, when the computer program is executed, a method for acquiring system information provided by the first aspect or the second aspect or the third aspect of the present application.

[0073] A ninth aspect of the present application provides a computer program product containing instructions, when the computer program product is executed on a computer, the computer is caused to execute the method for acquiring system information provided by the first aspect or the second aspect or the third aspect. BRIEF DESCRIPTION OF DRAWINGS

[0074] FIG. 1 is a system architecture diagram of a communication system provided by an embodiment of the present application;

[0075] FIG. 2 is an interaction diagram of a system information acquisition process provided by an embodiment of the present application;

[0076] FIG. 3 is a flow diagram of a system information acquisition method provided by an embodiment of the present application;

[0077] FIG. 4 is a flow diagram of a system information acquisition method provided by an embodiment of the present application;

[0078] FIG. 5 is a flow diagram of a data transmission method provided by an embodiment of the present application;

[0079] FIG. 6 is a flow diagram of a system information acquisition method provided by an embodiment of the present application;

[0080] FIG. 7 is a structural diagram of a terminal device provided by an embodiment of the present application;

[0081] FIG. 8 is a structural diagram of a terminal device provided by an embodiment of the present application;

[0082] FIG. 9 is a structural diagram of a network device provided by an embodiment of the present application;

[0083] FIG. 10 is a structural diagram of a communication apparatus provided by an embodiment of the present application;

[0084] FIG. 11 is a structural diagram of a communication apparatus provided by an embodiment of the present application;

[0085] FIG. 12 is a structural diagram of a computer program product provided by an embodiment of the present application. DETAILED DESCRIPTION

[0086] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The terms used in the following embodiments are only for the purpose of describing the specific embodiments and are not intended to be limiting to the present application. As used in the specification and the appended claims of the present application, the singular forms “a,” “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term “one or more” as used in the embodiments of the present application refers to one, two or more than two; “and / or” describes the associated relationship of associated objects, which means that there can be three relationships; for example, A and / or B can represent the following cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character “ / ” generally represents an “or” relationship between the associated objects.

[0087] In the present specification, the reference to “one embodiment” or “some embodiments” etc. means that a particular feature, structure or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Therefore, the statements “in one embodiment”, “in some embodiments”, “in other some embodiments”, “in yet some embodiments” etc. appearing in different places in the present specification are not necessarily all referring to the same embodiment, but mean “one or more but not all embodiments”, unless otherwise specifically emphasized. The terms “include”, “contain”, “have” and their variants mean “including but not limited to”, unless otherwise specifically emphasized.

[0088] In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the terms “first”, “second” etc. are used to distinguish the same or similar items with basically the same function and role. Those skilled in the art can understand that the terms “first”, “second” etc. do not limit the quantity and execution order, and the terms “first”, “second” etc. also do not necessarily mean different.

[0089] In the embodiments of the present application, the words “exemplary” or “for example” are used to mean serving as an example, instance or illustration. Any embodiment or design presented as “exemplary” or “for example” in the embodiments of the present application should not be interpreted as being more preferred or advantageous than other embodiments or design solutions. Rather, the use of the words “exemplary” or “for example” is intended to present related concepts in a specific manner, which is convenient for understanding.

[0090] It can be understood that the "embodiments" mentioned throughout the specification mean that the specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the present application. Therefore, the various embodiments throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It can be understood that in various embodiments of the present application, the size of the sequence number of each process does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0091] It can be understood that in the present application, "…", "if" and "when" all refer to the corresponding processing under certain objective conditions, not limited by time, and do not require judgment actions when implementing, nor mean that there are other limitations.

[0092] It can be understood that some optional features in the embodiments of the present application can be implemented independently in some scenarios without relying on other features, such as the scheme currently based on, to solve the corresponding technical problems and achieve the corresponding effects. In some scenarios, it can also be combined with other features according to the needs. Correspondingly, the devices given in the embodiments of the present application can also realize these features or functions, which will not be described here.

[0093] In the present application, except for special description, the same or similar parts of each embodiment can be mutually referred. In various embodiments of the present application, if there is no special description and logical conflict, the terms and / or descriptions of different embodiments are consistent and can be mutually referred, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship. The implementation modes of the present application described below do not constitute a limitation on the protection scope of the present application.

[0094] The embodiments of the present application are applied to various communication systems, which can be a second generation (2G) communication system, a third generation (3G) communication system, which can be an LTE system, or a fifth generation (5G) communication system, or a new radio (5G NR) system, and a new communication system in future communication development.

[0095] The communication system includes a first device and a second device. The first device can be a device for providing network communication function at the network side, also referred to as a network device or a network element in some cases. The network device can be a base station (including a functional unit of the base station or a combination of functional units of the base station) or a core network unit in general. The core network unit can be a functional unit in the core network, including but not limited to an Access and Mobility Management Function (AMF) unit or a Session Management Function (SMF) unit. The second device can be a device accessing the network, which can be a terminal in general. An example of the communication system is shown in FIG. 1, which includes a base station 1 and a terminal 2.

[0096] In embodiments provided in the present application, the base station can be any device with wireless transceiving function, including but not limited to: an evolved Node B (eNB or e-NodeB) in long term evolution (LTE), a base station (gNodeB or gNB) or a transmission receiving point (TRP) in new radio (NR), a base station in subsequent evolution of 3GPP, an access node in a Wi-Fi system, a wireless relay node, a wireless backhaul node, etc. The base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. The base station can include one or more co-sited or non-co-sited transmission points (TRPs). The base station can also be a wireless controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The base station can communicate with the terminal, or communicate with the terminal through a relay station. The terminal can communicate with multiple base stations of different technologies, for example, the terminal can communicate with a base station supporting an LTE network, and can also communicate with a base station supporting a 5G network, and can also communicate with a base station supporting an LTE network and a base station supporting a 5G network in dual connectivity.

[0097] In the embodiments provided in the present application, the terminal can be various forms, for example, a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a vehicle-mounted terminal device, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a wearable terminal device, and the like. The terminal can also be referred to as a terminal device, a user equipment (UE), an access terminal device, a vehicle-mounted terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal device, a mobile device, a UE terminal device, a terminal device, a wireless communication device, a UE agent, or a UE apparatus, and the like. The terminal can also be a fixed terminal or a mobile terminal.

[0098] It should be noted that the communication system described in the embodiments of the present application is for more clearly illustrating the technical solutions of the embodiments of the present application, and does not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those skilled in the art can know that, with the evolution of network architecture and the appearance of new business scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0099] FIG. 2 shows an interaction diagram of a system information acquisition process, wherein Cell A is a cell that periodically transmits a first system information block (SIB1) persistently, and NES Cell is a network energy saving cell that can obtain energy saving gain by non-persistently transmitting the first system information block (SIB1), and the NES Cell is also referred to as a cell supporting on-demand first system information block (On Demand SIB1).

[0100] In step S1, the terminal device receives uplink wake-up signal (WUS) configuration information (Configuration), i.e., first system information request configuration information, in Cell A; in step S2, the terminal device sends an uplink wake-up signal WUS to the network energy saving cell NES Cell to request the first system information block SIB1; and in step S3, the terminal device obtains the first system information block SIB1 transmitted by the network energy saving cell NES Cell.

[0101] It should be noted that the interaction diagram shown in FIG. 2 does not constitute a limitation of the application embodiments.

[0102] Optionally, in step S1, the terminal device can also receive the uplink wake-up signal configuration information in the network energy saving cell NES Cell; in steps S2 and S3, the terminal device can also send the uplink wake-up signal to request the first system information block SIB1 from the Cell A, and acquire the SIB1 sent by the Cell A.

[0103] In the network energy saving cell scenario, the cell no longer periodically issues the first system information SIB1, and the terminal device can request and receive the first system information of the network energy saving cell according to the demand, as shown in FIG. 2. When the terminal device reselects to the network energy saving cell NES Cell, if the terminal device has uplink data to be transmitted in the network energy saving cell, the terminal device needs to detect and determine whether the SIB1 of the current network energy saving cell is in the sending state, wherein the SIB1 of the current network energy saving cell may be in the sending state due to the request of other terminal devices or the change of the SIB1 of the network energy saving cell. When it is determined that the SIB1 of the network energy saving cell is not in the sending state, the terminal device needs to request the first system information block SIB1 from the network energy saving cell through the uplink wake-up signal WUS, and after the network energy saving cell feeds back the first system information block SIB1, the uplink data transmission link is established with the network energy saving cell to transmit the uplink data. As can be seen, in the scenario where the terminal device reselects to the network energy saving cell, if there is an uplink data transmission requirement, the time to acquire the first system information block SIB1 of the network energy saving cell causes a certain uplink data transmission delay, and further affects the experience of the communication service.

[0104] It can be understood that when the terminal device reselects to the network energy saving cell NES Cell, it means that the network energy saving cell NES Cell meets the data transmission measurement threshold, and / or the network energy saving cell NES Cell meets the cell reselection criteria, such as the path loss criterion, the signal strength criterion, the quality criterion, the priority criterion, etc., which are not limited in the application embodiments.

[0105] In order to reduce the uplink data transmission delay in the scenario that the terminal device reselects to the network energy saving cell, and improve the data transmission efficiency of the terminal device, an embodiment of the present application provides a system information acquisition method, which can be applied to a terminal device supporting on-demand first system information block (OD-SIB1). The method comprises: receiving a request configuration parameter, the request configuration parameter being used to request to acquire a first system information block SIB1 of a target cell, the target cell supporting the on-demand first system information block OD-SIB1; and if there is uplink data to be transmitted in the target cell, requesting to acquire the first system information block SIB1 of the target cell based on the request configuration parameter. In the embodiment of the present application, when the terminal device determines that there is uplink data to be transmitted in the target cell, the terminal device does not need to detect and judge whether the first system information SIB1 of the target cell is in a sending state, and directly requests the SIB1 from the target cell. Compared with the way of detecting and judging whether the first system information SIB1 of the target cell is not in the sending state and then requesting the first system information SIB1 from the target cell, the first system information SIB1 of the target cell can be more efficiently acquired for uplink data transmission, and the data transmission efficiency of the terminal device in the scenario of supporting the on-demand first system information block is improved.

[0106] In order to make the technical solutions of the present application clearer and easier to understand, the system information acquisition method provided by the embodiments of the present application will be introduced below with reference to the accompanying drawings.

[0107] Referring to a flowchart of a system information acquisition method shown in FIG. 3, the method comprises:

[0108] Step 301: The terminal device receives a request configuration parameter sent by a first cell.

[0109] Specifically, the request configuration parameter is used for the terminal device to request to acquire the first system information block SIB1 of a target cell, the terminal device supports the on-demand first system information block OD-SIB1, the target cell is a cell supporting the on-demand first system information block OD-SIB1, and the terminal device receives the request configuration parameter from the first cell. The first cell can be an auxiliary cell of the target cell, and the first cell can be a cell supporting OD-SIB1 or a cell not supporting OD-SIB1, and the present application does not limit the nature of the first cell.

[0110] Optionally, receiving the request configuration parameter from the first cell can specifically comprise that the network device of the first cell sends the request configuration parameter to the terminal device.

[0111] It can be understood that the target cell can also be referred to as a network energy saving cell, or an on-demand first system information block cell, or a first system information non-periodic sending cell, and the present application does not limit it.

[0112] It should be noted that the terminal device or the target cell "supports on-demand first system information block OD-SIB1" in the embodiments of the present application refers to the behavior that the terminal device or the target cell can obtain SIB1 or send SIB1 based on the demand, which does not constitute a limitation on the present application, and the above description can be replaced by "supports SIB1 non-periodic transmission" or other descriptions.

[0113] Step 302: If there is uplink data to be transmitted in the target cell, obtain the first system information block SIB1 of the target cell based on the request configuration parameter.

[0114] Specifically, if the terminal device has the demand of uplink data to be transmitted in the target cell, the terminal device does not need to judge the transmission state of the SIB1 of the target cell, and directly requests the target cell to obtain the SIB1 of the target cell based on the request configuration parameter. Compared with the way of detecting and judging that the SIB1 of the target cell is not in the transmission state and then requesting the SIB1 of the target cell, the SIB1 of the target cell can be more efficiently obtained for the transmission of uplink data, and the data transmission efficiency of the terminal device in the scenario of supporting on-demand first system information block is improved.

[0115] In the embodiments of the present application, the demand of uplink data transmission of the terminal device can include: the terminal device receives an indication of an upper layer, the terminal device has data transmission of an access layer (Access Stratum, AS), the terminal device receives an indication of a network side, such as paging, needs to receive downlink data, the terminal device needs to receive emergency system information such as public warning system (Public Warning System, PWS), etc., which is not limited in the embodiments of the present application.

[0116] It should be noted that if there is uplink data to be transmitted in the target cell, it includes that the target cell meets the quality requirement of uplink data transmission and / or the service requirement of uplink data transmission.

[0117] It can be understood that after the terminal device obtains the SIB1 of the target cell, since the SIB1 provides necessary system information and resource configuration, the terminal device can establish a radio resource control (Radio Resource Control, RRC) connection with the target cell based on the SIB1 to carry out subsequent uplink data transmission service.

[0118] In an optional implementation, the request configuration parameters sent by the first cell can include first request configuration parameters and second request configuration parameters, the first request configuration parameters being used to request to acquire SIB1 of the target cell based on uplink data transmission demand; the requesting to acquire SIB1 of the target cell based on the request configuration parameters includes: requesting to acquire SIB1 of the target cell based on target request configuration parameters, the target request configuration parameters including the first request configuration parameters.

[0119] Specifically, in the embodiments of the present application, the request configuration parameters include first request configuration parameters and second request configuration parameters, the first request configuration parameters being used to request to acquire SIB1 of the target cell based on uplink data transmission demand, i.e., the first request configuration parameters are parameters used by the terminal device to acquire SIB1 of the target cell when there is uplink data transmission demand. As can be seen, in the embodiments of the present application, the terminal device is configured with at least two sets of request configuration parameters, and the terminal device can request to acquire SIB1 based on target request configuration parameters including the first set of request configuration parameters (i.e., the first request configuration parameters) when there is uplink data transmission demand. Compared with the second set of request configuration parameters (i.e., the second request configuration parameters), the target request configuration parameters including the first request configuration parameters can be used to more quickly acquire the first system information block SIB1, thereby improving the data transmission efficiency of the terminal device in the scenario of uplink data transmission demand.

[0120] It should be noted that the first request configuration parameters and the second request configuration parameters can be indicated and configured by the network device, and the SIB1 acquisition based on the first request configuration parameters is faster than the SIB1 acquisition based on the second request configuration parameters, which can include, for example, that the target cell can respond more quickly to the SIB1 acquisition demand of the terminal device when receiving the SIB1 acquisition request based on the first request configuration parameters, and the power of the SIB1 acquisition request of the terminal device based on the first request configuration parameters is higher to ensure that the target cell can receive the acquisition request.

[0121] In an optional implementation, the target request configuration parameters further include the second request configuration parameters.

[0122] In the embodiments of the present application, the target parameter for requesting to acquire the first system information block SIB1 includes various information, such as an access preamble, an access occasion, a power ramping step, and the like. When the terminal device has uplink data to be transmitted in the target cell, the terminal device requests to acquire the first system information block SIB1 of the target cell based on the target request configuration parameter. The target request configuration parameter should at least include a first request configuration parameter. At this time, the target request configuration parameter can also include other second request configuration parameters. For example, the target request configuration parameter includes a first access preamble and a second access occasion and a second power ramping step. The first access preamble belongs to the first request configuration parameter, and the second access occasion and the second power ramping step belong to the second request configuration parameter.

[0123] It can be understood that the target request configuration parameter can only include the first request configuration parameter and does not include the second request configuration parameter. The embodiments of the present application do not make a limitation, and the skilled in the art can make a corresponding setting based on the business requirements.

[0124] In an optional embodiment, if there is uplink data to be transmitted in the target cell, the target cell satisfies a data transmission measurement threshold.

[0125] In the embodiments of the present application, the condition that the terminal device determines that there is uplink data to be transmitted in the target cell can include that the measurement result of the target cell satisfies a data transmission measurement threshold. The data transmission measurement threshold can indicate the minimum transmission rate and / or reception and transmission quality requirement that the terminal device needs to satisfy for transmitting data in the target cell. The transmission quality requirement can be a measurement result such as RSRP, RSRQ, and the like. The data transmission measurement threshold can be set according to the actual business requirements.

[0126] Optionally, the condition that the terminal device determines that there is uplink data to be transmitted in the target cell can also include that the target cell satisfies a cell reselection criterion or satisfies a quality measurement requirement for uplink data transmission, such as a path loss criterion, a signal strength criterion, a quality criterion, a priority criterion, and the like. The embodiments of the present application do not make a limitation. It can be understood that the embodiments of the present application do not make a limitation on the specific value of the data transmission measurement threshold, and the skilled in the art can set it according to the actual business requirements.

[0127] In an optional embodiment, the system information acquisition method provided by the embodiments of the present application further includes: if there is no uplink data to be transmitted in the target cell, requesting to acquire the first system information block SIB1 of the target cell based on the second request configuration parameter.

[0128] Specifically, if there is no uplink data to be transmitted in the target cell, the terminal device can select the second request configuration parameter to request the first system information block SIB1 of the target cell. Since the terminal device has no data transmission requirement in the target cell, the terminal device can request the first system information block SIB1 from the target cell based on the second request configuration parameter. Compared with requesting the first system information block SIB1 based on the first request configuration parameter, the target cell can quickly respond to the SIB1 acquisition request with service transmission requirement. The fast response here is relative to the response to the SIB1 acquisition request based on the second request configuration parameter, which can ensure that the terminal device's requirement for acquiring SIB1 is responded in time and does not affect the terminal device's service development in the target cell.

[0129] It should be noted that the terminal device has no data transmission requirement in the target cell specifically includes that the terminal device has no data transmission requirement in the cell reselection process or in the process of evaluating whether the cell can be camped.

[0130] As can be seen, in the embodiments of the present application, the terminal device is configured with the first request configuration parameter and the second request configuration parameter, the priority of the terminal device requesting the first system information block SIB1 based on the first request configuration parameter is higher than the priority of the terminal device requesting the first system information block SIB1 based on the second request configuration parameter, and the terminal device can select the corresponding request configuration parameter to request the first system information block SIB1 based on the current data transmission requirement, thereby ensuring the data transmission efficiency of the terminal device.

[0131] In an optional implementation, the request configuration parameter includes at least one of the following information: an access preamble, an access occasion, a power ramping step, a repetition number of the access preamble, a first system information block SIB1 request number, a first system information block SIB1 transmission period, a time interval from sending the access preamble to the network response, a response window duration, and a first system information block SIB1 reception window duration.

[0132] The request configuration parameter can be sent by the network device to the terminal device for configuration. The request configuration parameter can be set according to the service requirement, and the corresponding first request configuration parameter and the second request configuration parameter can be set. For example, for the access preamble, the first request configuration parameter can be set as the first access preamble, and the second request configuration parameter can be set as the second access preamble. The first access preamble and the second access preamble can be different in format, or the cyclic prefix of the access preamble is different, or the sequence of the access preamble is different. For the power ramping step, the first request configuration parameter can be set as the first power ramping step, and the second request configuration parameter can be set as the second power ramping step. The first power ramping step is greater than the second power ramping step. The first request configuration parameter and the second request configuration parameter are different in parameter configuration in the embodiment of the application. The specific setting mode of the first request configuration parameter and the second request configuration parameter is not limited in the application, and the setting can be made according to the actual communication service by the person skilled in the art.

[0133] In an optional embodiment, the first request configuration parameter includes a first access preamble, and the second request configuration parameter includes a second access preamble. The step of requesting to acquire the first system information block SIB1 of the target cell based on the target request configuration parameter includes the step of sending the first access preamble. The step of requesting to acquire the first system information block SIB1 of the target cell based on the second request configuration parameter includes the step of sending the second access preamble.

[0134] The terminal device can achieve different acquisition rates of SIB1 by sending different access preambles. When the terminal device sends the first access preamble, the target cell receiving the first access preamble can know that the terminal device currently has the transmission requirement of uplink data. At this time, the target cell can respond to the SIB1 acquisition requirement of the terminal device more quickly, so that the terminal device can acquire the SIB1 more quickly. When the terminal device sends the second access preamble, the target cell receiving the second access preamble can know that the terminal device currently does not have the transmission requirement of uplink data, that is, the time efficiency requirement of the terminal device for acquiring SIB1 is lower than the time efficiency requirement of the terminal device for acquiring SIB1 when the terminal device has the transmission requirement of uplink data. At this time, the target cell can first respond to the service requirement with higher priority or higher emergency, and then respond to the acquisition request of SIB1 of the terminal device. It can be understood that when there is no service requirement with higher priority or higher emergency in the target cell, the target cell can directly respond to the acquisition request of SIB1 of the terminal device.

[0135] It can be understood that the terminal device currently does not have the transmission requirement of uplink data means that the terminal device reselects to the target cell and needs to acquire the SIB1 of the target cell, but the terminal device does not have uplink data to be transmitted at the moment.

[0136] In an optional implementation, the first request configuration parameter comprises a first access occasion, the second request configuration parameter comprises a second access occasion; the acquiring the first system information block SIB1 of the target cell based on the target request configuration parameter comprises: sending a first system information request at the first access occasion; the acquiring the first system information block SIB1 of the target cell based on the second request configuration parameter comprises: sending a first system information request at the second access occasion; and the first system information request is used to request the acquiring the first system information block SIB1 of the target cell.

[0137] The terminal device can select to send the first system information request at different access occasions, so as to achieve different acquiring rates of the SIB1. When the terminal device sends the first system information request at the first access occasion, the target cell determines that the terminal device currently has a transmission demand for uplink data based on the time of acquiring the first system information request, so that the target cell can respond to the SIB1 acquiring demand of the terminal device more quickly, and the terminal device can acquire the SIB1 more quickly. When the terminal device sends the first system information request at the second access occasion, the target cell determines that the terminal device currently does not have a transmission demand for uplink data based on the time of acquiring the first system information request, so that the target cell can respond to other service demands with higher priority or higher emergency level first, and then respond to the acquiring request of the SIB1 of the terminal device.

[0138] In an optional implementation, the first request configuration parameter comprises a first power ramping step, the second request configuration parameter comprises a second power ramping step; the first power ramping step is greater than the second power ramping step; the acquiring the first system information block SIB1 of the target cell based on the target request configuration parameter comprises: determining a first sending power based on the first power ramping step, and sending a first system information request based on the first sending power; the acquiring the first system information block SIB1 of the target cell based on the second request configuration parameter comprises: determining a second sending power based on the second power ramping step, and sending a first system information request based on the second sending power; and the first system information request is used to request the acquiring the first system information block SIB1 of the target cell.

[0139] The terminal device can determine the transmission power of the first system information request based on different power ramping steps to achieve different acquisition rates of SIB1. After a round of request for acquiring SIB1 fails, the terminal device will determine a new transmission power based on the power ramping step, and request to acquire SIB1 with the newly determined transmission power. Since the first power ramping step is greater than the second power ramping step, the transmission power determined based on the first power ramping step is greater than the transmission power determined based on the second power ramping step. That is, the terminal device can determine the transmission power of the first system information request based on a larger power ramping step when there is an uplink data transmission requirement. The larger transmission power can enable the signal to penetrate more obstacles and cover a wider area, and the target cell has a higher success rate of receiving the first system information request, so that the rate of acquiring SIB1 based on the transmission power determined based on the first power ramping step is faster than the rate of acquiring SIB1 based on the transmission power determined based on the second power ramping step.

[0140] In an optional implementation, the first request configuration parameter includes a first repetition number of the access preamble, and the second request configuration parameter includes a second repetition number of the access preamble; the first repetition number is greater than the second repetition number; the request for acquiring the first system information block SIB1 of the target cell based on the target request configuration parameter includes transmitting the access preamble according to the first repetition number; and the request for acquiring the first system information block SIB1 of the target cell based on the second request configuration parameter includes transmitting the access preamble according to the second repetition number.

[0141] The terminal device can transmit the access preamble based on different repetition numbers of the access preamble to achieve different acquisition rates of SIB1. When the terminal device has an uplink data transmission requirement, the terminal device can transmit the access preamble according to the first repetition number; when the terminal device does not have an uplink data transmission requirement, the terminal device can transmit the access preamble according to the second repetition number; since the first repetition number is greater than the second repetition number, that is, the terminal device can select a transmission mode of the access preamble with more repetition numbers when there is an uplink data transmission requirement, compared to when there is no uplink data transmission requirement, the transmission mode of the access preamble with more repetition numbers can ensure that the target cell receives the access preamble in time and feeds back SIB1 in time. Therefore, the terminal device can acquire SIB1 more quickly by transmitting the access preamble according to the first repetition number when there is an uplink data transmission requirement.

[0142] In an optional implementation, the first request configuration parameter comprises a first request number of a first system information block SIB1, and the second request configuration parameter comprises a second request number of the first system information block SIB1; the first request number is greater than the second request number; the acquiring the first system information block SIB1 of the target cell based on the target request configuration parameter comprises: sending a first system information request according to the first request number; the acquiring the first system information block SIB1 of the target cell based on the second request configuration parameter comprises: sending a first system information request according to the second request number; the first request number and the second request number are used to limit the sending number of the first system information request, and the first system information request is used to request the first system information block SIB1 of the target cell.

[0143] The terminal device can achieve different acquisition rates of the SIB1 based on different SIB1 request numbers. When the terminal device has an uplink data transmission requirement, the terminal device can send a first system information request according to the first request number; when the terminal device does not have an uplink data transmission requirement, the terminal device can send a first system information request according to the second request number; because the first request number is greater than the second request number, the terminal device with an uplink data transmission requirement can send the first system information request more times than the terminal device without an uplink data transmission requirement, thereby improving the success rate of the terminal device with an uplink data transmission requirement to acquire the SIB1 and improving the acquisition rate of the SIB1.

[0144] In an optional implementation, the first request configuration parameter comprises a first time interval of sending an access preamble to a network response and a first response window duration, and the second request configuration parameter comprises a second time interval of sending an access preamble to a network response and a second response window duration; the first time interval is less than the second time interval, and / or the first response window duration is less than the second response window duration; the acquiring the first system information block SIB1 of the target cell based on the target request configuration parameter comprises: determining a first receiving response opportunity according to the first time interval and the first response window duration, and receiving a response of requesting the first system information block SIB1 of the target cell at the first receiving response opportunity; the acquiring the first system information block SIB1 of the target cell based on the second request configuration parameter comprises: determining a second receiving response opportunity according to the second time interval and the second response window duration, and receiving a response of requesting the first system information block SIB1 of the target cell at the second receiving response opportunity.

[0145] The terminal device obtains different acquisition rates of the SIB1 based on different time intervals of sending an access preamble to the network and responding and different response window durations. When the terminal device has an uplink data transmission requirement, the terminal device determines a first reception response occasion according to a first time interval and a first response window duration, and receives a response for requesting acquisition of the SIB1 at the first reception response occasion. When the terminal device does not have an uplink data transmission requirement, the terminal device determines a second reception response occasion according to a second time interval and a second response window duration, and receives a response for requesting acquisition of the SIB1 at the second reception response occasion. Since the first time interval is shorter than the second time interval and / or the first response window duration is shorter than the second response window duration, the first reception response occasion is earlier than the second reception response occasion. Compared with receiving the response for requesting acquisition of the SIB1 based on the second reception response occasion, the terminal device can receive the response for requesting acquisition of the SIB1 based on the first reception response occasion more quickly, and accordingly can acquire the SIB1 more quickly.

[0146] In an optional implementation, the first request configuration parameter includes a first reception window duration of the first system information block SIB1, and the second request configuration parameter includes a second reception window duration of the first system information block SIB1. The first reception window duration is shorter than the second reception window duration. The acquiring the first system information block SIB1 of the target cell based on the target request configuration parameter includes receiving the first system information block SIB1 of the target cell within the first reception window duration. The acquiring the first system information block SIB1 of the target cell based on the second request configuration parameter includes receiving the first system information block SIB1 of the target cell within the second reception window duration.

[0147] The terminal device obtains different acquisition rates of the SIB1 based on different reception window durations. When the terminal device has an uplink data transmission requirement, the terminal device selects to receive the SIB1 within a first reception window duration. When the terminal device does not have an uplink data transmission requirement, the terminal device selects to receive the SIB1 within a second reception window duration. Since the first reception window duration is shorter than the second reception window duration, the terminal device can receive the SIB1 within a shorter time window and perform a subsequent data transmission process, and accordingly can acquire the SIB1 more quickly.

[0148] In an optional implementation, the first request configuration parameter comprises a first transmission period of a first system information block SIB1, and the second request configuration parameter comprises a second transmission period of the first system information block SIB1; the first transmission period is less than the second transmission period; the first system information block SIB1 of the target cell is requested to be acquired based on the target request configuration parameter, comprising: the first system information block SIB1 of the target cell is acquired according to the first transmission period; the first system information block SIB1 of the target cell is requested to be acquired based on the second request configuration parameter, comprising: the first system information block SIB1 of the target cell is acquired according to the second transmission period.

[0149] The terminal device acquires the SIB1 based on different SIB1 transmission periods to achieve different acquisition rates of acquiring the SIB1. When the terminal device has an uplink data transmission requirement, the terminal device can receive and acquire the SIB1 based on the first transmission period; when the terminal device does not have an uplink data transmission requirement, the terminal device can receive and acquire the SIB1 based on the second transmission period; since the first transmission period is less than the second transmission period, that is, the terminal device receives and acquires the SIB1 at a higher frequency under the first transmission period, compared with receiving and acquiring the SIB1 based on the second transmission period, the terminal device can more quickly acquire the SIB1 by receiving and acquiring the SIB1 based on the first transmission period.

[0150] It should be noted that the configuration of the first request configuration parameter and the second request configuration parameter in the embodiments of the present application is set based on the requirement that the speed of requesting to acquire the SIB1 based on the first request configuration parameter is faster than the speed of requesting to acquire the SIB1 based on the second request configuration parameter, for example, the first transmission period is less than the second transmission period. It can be understood that the configuration of the first request configuration parameter and the second request configuration parameter can also be set based on other requirements, for example, it can be set based on the reliability requirement of acquiring the SIB1, at this time, the first transmission period can be set to be greater than the second transmission period, and a longer transmission period can ensure that the terminal device more accurately and reliably acquires the SIB1. As can be seen, the configuration of the first request configuration parameter and the second request configuration parameter in the embodiments of the present application can be set in combination with the acquisition requirement of the SIB1, and the embodiments of the present application are not limited.

[0151] It should also be noted that the embodiments of the present application are described based on acquiring the first system information block SIB1, and it can be understood that in some other optional implementations, the embodiments of the present application can also acquire other system information based on the request configuration parameter, such as the second system information block SIB2, the third system information block SIB3, and the like. Under different service requirements, those skilled in the art can acquire other system information based on the system information acquisition method provided in the embodiments of the present application.

[0152] With reference to the flowchart of the system information acquisition method provided in FIG. 4, on the basis of the scheme provided in FIG. 3, the system information acquisition method provided in the embodiment of the present application further includes the following steps.

[0153] Step 403: If there is no uplink data to be transmitted in the target cell, and the SIB1 of the target cell is in a transmitting state, receiving the SIB1 of the target cell.

[0154] Specifically, when the terminal device has no uplink data to be transmitted in the target cell, the terminal device can determine whether the SIB1 of the target cell in the current network environment is in a transmitting state. If the SIB1 of the target cell is in a transmitting state, the terminal device can directly receive the SIB1 of the target cell, thereby omitting the step of requesting the SIB1 of the target cell and simplifying the SIB1 acquisition process.

[0155] Step 404: If there is no uplink data to be transmitted in the target cell, and the SIB1 of the target cell is not in a transmitting state, acquiring the SIB1 of the target cell based on the request configuration parameter.

[0156] Specifically, when the terminal device has no uplink data to be transmitted in the target cell, and the SIB1 of the target cell is not in a transmitting state, the terminal device requests the SIB1 of the target cell based on the request configuration parameter sent by the first cell.

[0157] It should be noted that the step 403 and the step 404 do not constitute a limitation on the execution order of the system information acquisition method provided in the embodiment of the present application. The step number is only used to distinguish different technical processes, and does not constitute a limitation on the execution order.

[0158] In the embodiment of the present application, when the terminal device has no uplink data transmission requirement, the terminal device can further detect and determine whether the SIB1 of the target cell is in a transmitting state. For example, the SIB1 of the target cell is requested by other terminal devices, the current SIB1 is in a transmitting state, or the SIB1 is in a transmitting state due to SIB1 change. When the terminal device determines that the current SIB1 is in a transmitting state, the terminal device does not need to separately request to acquire the SIB1, but directly acquires the SIB1. When the terminal device determines that the current SIB1 is not in a transmitting state, the terminal device requests to acquire the SIB1 based on the request configuration parameter.

[0159] It should be noted that whether the SIB1 is in a transmitting state, the terminal device can confirm according to the SIB1 transmitting state indication in the master information block (MIB), or can detect whether there is SIB1 being transmitted in the corresponding scheduling position according to the scheduling parameter of the SIB1.

[0160] In an optional embodiment, the request configuration parameter comprises a first request configuration parameter and a second request configuration parameter; the first request configuration parameter is used to request obtaining a first system information block SIB1 of the target cell based on the uplink data transmission requirement; if there is uplink data to be transmitted in the target cell, the request configuration parameter is used to request obtaining the first system information block SIB1 of the target cell, comprising: if there is uplink data to be transmitted in the target cell, the first request configuration parameter is used to request obtaining the first system information block SIB1; if there is no uplink data to be transmitted in the target cell and the first system information block SIB1 of the target cell is not in a sending state, the request configuration parameter is used to request obtaining the first system information block SIB1, comprising: if there is no uplink data to be transmitted in the target cell and the first system information block SIB1 of the target cell is not in a sending state, the second request configuration parameter is used to request obtaining the first system information block SIB1.

[0161] Specifically, in the embodiment of the application, the request configuration parameter comprises a first request configuration parameter and a second request configuration parameter; the first request configuration parameter is used to request obtaining a first system information block SIB1 of the target cell based on the uplink data transmission requirement; when the terminal device has an uplink data transmission requirement, the target request configuration parameter comprising the first request configuration parameter is used to request obtaining the SIB1; when the terminal device has no uplink data transmission requirement and it is judged that the current SIB1 is not in a sending state, the second request configuration parameter is used to request obtaining the SIB1.

[0162] Therefore, in the embodiment of the application, the terminal device obtains the SIB1 of the target cell based on the first request configuration parameter when there is an uplink data transmission requirement, thereby improving the data transmission efficiency of the terminal device in the scenario of having an uplink data transmission requirement; the terminal device requests obtaining the SIB1 of the cell based on the second request configuration parameter when there is no uplink data transmission requirement and the SIB1 of the target cell is not in a sending state at present, compared with requesting the first system information block SIB1 based on the first request configuration parameter, the target cell can quickly respond to the SIB1 obtaining request of having an uplink data transmission requirement, the quick response here is relative to responding to the SIB1 obtaining request based on the second request configuration parameter, which can ensure that the requirement of the terminal device for obtaining the SIB1 is responded in time and does not affect the business development of the terminal device in the target cell.

[0163] The embodiment of the application further provides a data transmission method, referring to a flowchart of a data transmission method shown in FIG. 5, the method is applied to a terminal device supporting on-demand first system information block OD-SIB1, and the method comprises the following steps:

[0164] Step 501: If there is uplink data to be transmitted in the target cell and the SIB1 of the target cell needs to be acquired or has not been acquired, the uplink data is transmitted through the serving cell.

[0165] The serving cell is a cell currently providing service for the terminal device, the target cell supports on-demand first system information block (OD-SIB1), and the serving cell satisfies a data transmission measurement threshold.

[0166] Specifically, if the terminal device has a demand for uplink data transmission in the target cell and the terminal device has not acquired or needs to acquire the SIB1 of the target cell, the terminal device temporarily gives up acquiring the SIB1 of the target cell and directly transmits the uplink data through the serving cell currently providing service for the terminal device.

[0167] It can be seen that, in the embodiment of the application, the terminal device temporarily acquires the SIB1 of the target cell to transmit the uplink data through the current serving cell, thereby ensuring the data transmission efficiency of the terminal device. The serving cell satisfies a data transmission measurement threshold, which can indicate a minimum transmission rate and / or reception and transmission quality requirement that the terminal device needs to satisfy when transmitting data in the serving cell. The transmission quality requirement can be a measurement result such as RSRP and RSRQ, and the data transmission measurement threshold can be set according to actual business requirements.

[0168] Optionally, the target cell can also satisfy a cell reselection criterion, such as a path loss criterion, a signal strength criterion, a quality criterion, a priority criterion, and the like. The embodiment of the application does not limit the target cell. It can be understood that the embodiment of the application does not limit the specific value of the data transmission measurement threshold, and a technician can set the data transmission measurement threshold according to actual business requirements.

[0169] It should be noted that the target cell is marked with a dashed line in FIG. 5, which is only used to indicate that the terminal device does not transmit uplink data by establishing a communication link with the target cell in the current uplink data transmission process of the terminal device, and does not constitute other limitations on the target cell.

[0170] In an optional embodiment, the target cell satisfies a signal quality measurement threshold.

[0171] Further, the terminal device has an uplink data transmission requirement in the target cell, and therefore the target cell should meet the signal quality measurement threshold. In the case where the target cell meets the signal quality measurement threshold, the terminal device can reselect to the target cell for data transmission. It can be understood that the present application does not limit the specific value of the signal quality measurement threshold, and the skilled person can set it according to the actual business requirements. It should be noted that the signal quality measurement threshold in the present application can be configured as the same threshold value as the data transmission measurement threshold, or can be configured as a different threshold value, for example, the data transmission measurement threshold is set to be higher than the signal quality measurement threshold.

[0172] In an optional implementation, the data transmission method provided by the present application further includes: transmitting first indication information based on radio resource control (RRC) signaling, the first indication information being used to indicate at least one of the following information: a signal quality measurement result of the target cell as a candidate cell, the terminal device needing to acquire SIB1 of the target cell, and the terminal device needing to acquire the first system information block (SIB1) of the target cell but not having acquired it.

[0173] In the present application, the terminal device can indicate that the target cell is a candidate cell through RRC signaling, that is, the target cell meets the data transmission measurement threshold and / or the cell reselection criterion. The terminal device can also indicate the signal measurement result of the target cell or indicate that it needs to acquire the SIB1 of the target cell or needs to acquire the SIB1 of the target cell but not having acquired it through RRC signaling, that is, inform the serving cell that the terminal device currently has the intention to reselect to the target cell, but due to the timeliness requirement of data transmission, it currently builds a connection for transmission in the serving cell to avoid affecting the business.

[0174] It can be understood that before the terminal device transmits uplink data through the serving cell, it needs to first establish or restore the RRC connection with the serving cell in order to subsequently carry out the uplink data transmission business.

[0175] Referring to the flowchart of a system information acquisition method shown in FIG. 6, the method is applied to a network device belonging to a serving cell, the serving cell being a cell currently serving the terminal device, and the method includes the following steps:

[0176] Step 601: Transmit a request configuration parameter, the request configuration parameter being used for the terminal device to request to acquire the SIB1 of the target cell, the access parameter including a first request configuration parameter and a second request configuration parameter, the first request configuration parameter being used for the terminal device to request to acquire the SIB1 of the target cell based on the uplink data transmission requirement.

[0177] The target cell supports on-demand first system information block (OD-SIB1).

[0178] In the embodiments of the present application, the network device can send a request configuration parameter to the terminal device, the request configuration parameter including at least two sets of request configuration parameters, so that the terminal device can configure the two sets of request configuration parameters, wherein the first set of request configuration parameters (i.e., the first request configuration parameter) can be used to request a target cell to obtain SIB1 when the terminal device has uplink data transmission demand, and compared with the second set of request configuration parameters (i.e., the second request configuration parameter), the target request configuration parameter including the first request configuration parameter can be used to more quickly obtain the first system information block SIB1, thereby improving the data transmission efficiency of the terminal device in the scenario of uplink data transmission demand. It can be understood that in the embodiments of the present application, the network side can pre-set two sets of request configuration parameters and send the two sets of request configuration parameters to the terminal device, so that the terminal device can obtain the SIB1 of the target cell based on different request configuration parameters according to its own data transmission demand, ensuring the efficiency of system information acquisition and not affecting the normal business development of the network side device.

[0179] In some possible implementation manners, the request configuration parameter includes at least one of the following information: an access preamble, an access occasion, a power ramping step, a repetition number of the access preamble, a first system information block SIB1 request number, a transmission period of the first system information block SIB1, a time interval from sending the access preamble to a response of the network, a time length of a response window, and a reception window time length of the first system information block SIB1.

[0180] In the embodiments of the present application, the request configuration parameter can be sent by the network device to the terminal device for configuration. The person skilled in the art can set the request configuration parameter according to the business demand, and correspondingly set the first request configuration parameter and the second request configuration parameter. For example, for the access preamble, the first request configuration parameter can be set as the first access preamble, and the second request configuration parameter can be set as the second access preamble. The first access preamble and the second access preamble can be different in format, or the cyclic prefix of the access preamble is different, or the sequence of the access preamble is different. For the power ramping step, the first request configuration parameter can be set as the first power ramping step, and the second request configuration parameter can be set as the second power ramping step. The first power ramping step is greater than the second power ramping step. In the embodiments of the present application, the first request configuration parameter and the second request configuration parameter are different in parameter configuration. The present application does not limit the specific setting mode of the first request configuration parameter and the second request configuration parameter, and the person skilled in the art can set them according to the actual communication business.

[0181] Referring to FIG. 7, a structure schematic diagram of a terminal device is shown, which supports on-demand first system information block OD-SIB1. The terminal device includes:

[0182] The parameter receiving module 701 is configured to receive a request configuration parameter, and the request configuration parameter is used to request to acquire a first system information block (SIB1) of a target cell, and the target cell supports on-demand first system information block (OD-SIB1).

[0183] The information acquiring module 702 is configured to, when there is uplink data to be transmitted in the target cell, request to acquire the first system information block (SIB1) of the target cell based on the request configuration parameter.

[0184] Optionally, the request configuration parameter includes a first request configuration parameter and a second request configuration parameter, and the first request configuration parameter is used to request to acquire the first system information block (SIB1) of the target cell based on uplink data transmission demand.

[0185] The information acquiring module 702 is specifically configured to request to acquire the first system information block (SIB1) of the target cell based on the target request configuration parameter, and the target request configuration parameter includes the first request configuration parameter.

[0186] Optionally, the target request configuration parameter further includes the second request configuration parameter.

[0187] Optionally, when there is uplink data to be transmitted in the target cell, the target cell meets a data transmission measurement threshold.

[0188] Optionally, the information acquiring module 702 is further configured to, when there is no uplink data to be transmitted in the target cell, request to acquire the first system information block (SIB1) of the target cell based on the second request configuration parameter.

[0189] Optionally, the request configuration parameter includes at least one of the following information: an access preamble, an access occasion, a power ramping step, a repetition number of the access preamble, a first system information block (SIB1) request number, a first system information block (SIB1) transmission period, a time interval from transmitting the access preamble to a network response, a response window duration, and a first system information block (SIB1) reception window duration.

[0190] It should be noted that the steps performed by each module of the terminal device provided in the embodiments of the present application and the related technical features correspond to the method for acquiring system information of a terminal device provided in the foregoing embodiments, and the description of the device part can be referred to the foregoing method part embodiments, which will not be described here.

[0191] Referring to FIG. 8, a structural schematic diagram of a terminal device is shown, and the terminal device supports on-demand first system information block (OD-SIB1), and the terminal device includes:

[0192] The data transmission module 801 is configured to, when there is uplink data to be transmitted in the target cell and the first system information block SIB1 of the target cell needs to be acquired or has not been acquired, transmit the uplink data through the serving cell; the serving cell is a cell currently serving the terminal device, and the target cell supports on-demand first system information block OD-SIB1; and the serving cell satisfies a data transmission measurement threshold.

[0193] Optionally, the target cell satisfies a signal quality measurement threshold.

[0194] Optionally, the terminal device further comprises an information sending module configured to send first indication information based on radio resource control RRC signaling, the first indication information being used to indicate at least one of the following information: the target cell is an alternative cell, a signal quality measurement result of the target cell, the terminal device needs to acquire the first system information block SIB1 of the target cell, and the terminal device needs to acquire the SIB1 of the target cell but has not acquired the SIB1.

[0195] It should be noted that the steps performed by the modules in the terminal device and the related technical features provided in the embodiments of the present application correspond to the data transmission method applied to the terminal device provided in the foregoing embodiments of the present application, and the description of the device part can be referred to the foregoing embodiments of the method part, which will not be described herein.

[0196] Referring to FIG. 9, a structural schematic diagram of a network device is shown, the network device belongs to a serving cell, the serving cell is a cell currently serving a terminal device, and the network device comprises:

[0197] The parameter sending module 901 is configured to send a request configuration parameter, the request configuration parameter being used for the terminal device to request to acquire the first system information block SIB1 of the target cell, and the access parameter comprising a first request configuration parameter and a second request configuration parameter; the first request configuration parameter is used for the terminal device to request to acquire the first system information block SIB1 of the target cell based on uplink data transmission demand, and the target cell supports on-demand first system information OD-SIB1.

[0198] Optionally, the request configuration parameter comprises at least one of the following information: an access preamble, an access occasion, a power ramping step, a repetition number of the access preamble, a first system information block SIB1 request number, a transmission period of the first system information block SIB1, a time interval from sending the access preamble to a network response, a time length of a response window, and a reception window time length of the first system information block SIB1.

[0199] It should be noted that the steps performed by the modules in the network device and the related technical features provided in the embodiments of the present application correspond to the method for acquiring system information applied to the network device provided in the foregoing embodiments of the present application, and the description of the device part can be referred to the foregoing embodiments of the method part, which will not be described herein.

[0200] FIG. 10 is a structural schematic diagram of a communication apparatus provided by an embodiment of the present application. The communication apparatus can be a network device, including but not limited to a base station, a core network unit. FIG. 10 shows a simplified structural schematic diagram of a base station. The base station 1000 includes a processor 1010 part, a memory 1020 part, and a transceiver 1030 part. The processor 1010 part is mainly used for baseband processing, controlling the base station, etc.; the processor 1010 part is usually the control center of the base station, and can be usually referred to as a processor, used for controlling the base station to perform the processing operation of the first device side in the above method embodiments. The memory 1020 part is mainly used for storing computer program codes and data. The transceiver 1030 part is mainly used for transceiving radio frequency signals and converting radio frequency signals and baseband signals; the transceiver 1030 part can be usually referred to as a transceiving module, a transceiver, a transceiving circuit, or a transceiver, etc. The transceiving module of the transceiver 1030 part, which can also be referred to as a transceiver or a transceiver, etc., includes an antenna 1033 and a radio frequency circuit (not shown in the figure), wherein the radio frequency circuit is mainly used for radio frequency processing. Optionally, the devices for realizing the receiving function in the transceiver 1030 part can be regarded as a receiver, and the devices for realizing the sending function can be regarded as a transmitter, that is, the transceiver 1030 part includes a receiver 1032 and a transmitter 1031. The receiver can also be referred to as a receiving module, a receiver, or a receiving circuit, etc., and the transmitter can be referred to as a transmitting module, a transmitter, or a transmitting circuit, etc.

[0201] The processor 1010 part and the memory 1020 part can include one or more single boards, each of which can include one or more processors and one or more memories. The processor is used to read and execute the program in the memory to realize the baseband processing function and the control of the base station. If there are multiple single boards, the single boards can be interconnected to enhance the processing capability. As an optional implementation, the multiple single boards can also share one or more processors, or share one or more memories, or share one or more processors at the same time.

[0202] For example, in an implementation, the transceiving module of the transceiver 1030 part is used to execute the transceiving-related processes performed by the network device in the above method embodiments. The processor of the processor 1010 part is used to execute the processing-related processes performed by the network device in the above method embodiments.

[0203] It should be understood that FIG. 10 is merely an example but not a limitation, and the above network device including the processor, the memory, and the transceiver can not depend on the structure shown in FIG. 10.

[0204] FIG. 11 is a structural diagram of another communication apparatus provided by the embodiments of the present application. The communication apparatus can be a terminal device, which can be a terminal, including but not limited to a mobile phone, a smart wearable device (such as a smart watch), and the like. Taking a mobile phone as an example, the communication apparatus can include a processor 1110, an external memory interface 1120, an internal memory 1121, a display screen 1130, a camera 1140, an antenna 1, an antenna 2, a mobile communication module 1150, a wireless communication module 1160, and the like.

[0205] It can be understood that the structure illustrated in the embodiments does not constitute a specific limitation on the communication apparatus. In other embodiments, the communication apparatus can include more or fewer components than those illustrated, or combine certain components, or split certain components, or different arrangement of components. The illustrated components can be implemented in hardware, software, or a combination of software and hardware.

[0206] The processor 1110 can include one or more processing units. For example, the processor 1110 can include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Different processing units can be independent devices or integrated into one or more processors.

[0207] It can be understood that the interface connection relationship between the modules illustrated in the embodiments is only illustrative and does not constitute a structural limitation on the communication apparatus. In other embodiments of the present application, the communication apparatus can also use different interface connection manners or a combination of multiple interface connection manners.

[0208] The external memory interface 1120 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the communication apparatus. The external memory card communicates with the processor 1110 through the external memory interface 1120 to realize a data storage function. For example, files such as music and videos are saved in the external memory card.

[0209] The internal memory 1121 can be used to store computer executable program codes, which include instructions. The processor 1110 performs various function applications and data processing of the communication device by running the instructions stored in the internal memory 1121. The internal memory 1121 can include a program storage area and a data storage area. The program storage area can store an operating system, at least one application program required by a function (such as a sound playing function, an image playing function, etc.), and the like. The data storage area can store data created during the use of the communication device (such as audio data, a phone book, etc.), and the like. In addition, the internal memory 1121 can include a high-speed random access memory, and can further include a non-volatile memory such as at least one magnetic disk storage device, a flash memory device, a universal flash storage (UFS), and the like. The processor 1110 performs various function applications and data processing of the communication device by running the instructions stored in the internal memory 1121 and / or the instructions stored in the memory disposed in the processor.

[0210] The wireless communication function of the communication device can be implemented by the antenna 1, the antenna 2, the mobile communication module 1150, the wireless communication module 1160, a modem processor, and a baseband processor, and the like.

[0211] The antenna 1 and the antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in the communication device can be used to cover a single or multiple communication frequency bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example, the antenna 1 can be multiplexed as a diversity antenna of a wireless local area network. In some other embodiments, the antennas can be used in combination with a tuning switch.

[0212] The mobile communication module 1150 can provide a solution including 2G / 3G / 4G / 5G wireless communication applied to the communication device. The mobile communication module 1150 can include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), and the like. The mobile communication module 1150 can receive electromagnetic waves by the antenna 1, and perform filtering, amplification, and the like on the received electromagnetic waves, and transmit the processed electromagnetic waves to the modem processor for demodulation. The mobile communication module 1150 can also amplify the signals modulated by the modem processor, and convert the signals into electromagnetic waves to be radiated out through the antenna 1. In some embodiments, at least part of the function modules of the mobile communication module 1150 can be disposed in the processor 1110. In some embodiments, at least part of the function modules of the mobile communication module 1150 and at least part of the modules of the processor 1110 can be disposed in the same device.

[0213] In some embodiments of the present application, the communication device initiates or receives a call request through the mobile communication module 1150 and the antenna 1.

[0214] In addition, on the above components, an operating system runs. For example, IOS operating system, Android operating system, Windows operating system, etc. Application programs can be installed and run on the operating system. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the explanation and beneficial effects of the above-mentioned related content in any of the communication devices can refer to the corresponding method embodiments provided above, and will not be repeated here.

[0215] Referring to FIG. 12, the present application also provides a schematic diagram of a computer program product. In some embodiments, the method disclosed in FIG. 3 or FIG. 4 or FIG. 5 or FIG. 6 can be implemented as computer program instructions encoded in a computer readable storage medium or other non-transitory medium or article in a machine readable format.

[0216] FIG. 12 schematically illustrates a conceptual partial view of an example computer program product arranged in accordance with at least some embodiments presented herein, the example computer program product including a computer program for executing a computer process on a computing device.

[0217] In one embodiment, the computer program product 1200 is provided using a signal bearing medium 1201. The signal bearing medium 1201 can include one or more program instructions 1202 which, when executed by one or more processors, can provide at least some of the functionality described above with respect to FIG. 3 or FIG. 4 or FIG. 5 or FIG. 6. Thus, for example, with reference to the embodiment illustrated in FIG. 3, one or more features of steps 301 and 302 can be undertaken by one or more instructions associated with the signal bearing medium 1201. Further, the program instructions 1202 in FIG. 12 also describe example instructions.

[0218] In some examples, the signal bearing medium 1201 can comprise a computer- readable medium 1203, such as, but not limited to, a hard disk drive, a compact disc (CD), a digital video disc (DVD), a memory, a ROM, a RAM, or the like.

[0219] In some implementations, the signal bearing medium 1201 can comprise a computer recordable medium 1204, such as, but not limited to, a memory, a read / write (R / W) CD, a R / W DVD, etc. In some implementations, the signal bearing medium 1201 can comprise a communication medium 1205, such as, but not limited to, a digital and / or an analog communication medium (e.g., a fiber optic cable, a waveguide, a wired communication link, a wireless communication link, etc.). Thus, for example, the signal bearing medium 1201 can be conveyed by a wireless form of the communication medium 1205 (e.g., a wireless communication medium complying with the IEEE 802.15 standard or other transmission protocol).

[0220] The one or more program instructions 1202 can be, for example, computer-executable instructions or logic-implementing instructions. In some examples, a computing device of a computing device can be configured to provide various operations, functions, or actions in response to program instructions 1202 being communicated to the computing device by one or more of a computer-readable medium 1203, a computer-recordable medium 1204, and / or a communication medium 1205.

[0221] It is to be understood that the arrangements described herein are for purposes of example only. As such, those skilled in the art will appreciate that other arrangements and other elements (e.g. machines, interfaces, functions, orders, and groupings of functions, etc.) can be used instead, and some elements can be omitted altogether according to the desired results. Additionally, many of the described elements can be implemented as functional entities which can be realized as discrete or distributed components, or as components integrated in any suitable combination and location of hardware, software, or both.

[0222] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the systems, devices and modules described above can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0223] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only schematic. The division of the modules is only a logical function division. In actual implementation, another division mode can be used, for example, a plurality of modules or components can be combined or integrated into another system, or some features can be omitted or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed elements can be indirect coupling or communication connection through some interfaces, devices or modules, which can be electrical, mechanical or other forms.

[0224] The modules described as separate components can or can not be physically separate, and the components displayed as modules can or can not be physical modules, that is, they can be located in one place, or can be distributed on a plurality of network modules. Some or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0225] In addition, the functional modules in each embodiment of the present application can be integrated in one processing module, or each module can exist physically, or two or more modules can be integrated in one module. The integrated module can be realized in the form of hardware or in the form of a software functional module.

[0226] The integrated module, if implemented in the form of a software function module and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such an understanding, the part of the technical solutions of the present application that essentially makes a contribution or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the processes of the methods described in the various embodiments of the present application. The aforementioned storage medium includes various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk.

[0227] The above-described embodiments are merely used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features thereof can be replaced by equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

A method of acquiring system information, characterized in that The method is applied to a terminal device supporting on-demand first system information block (OD-SIB1), and the method comprises: receiving a request configuration parameter used for requesting to acquire first system information block (SIB1) of a target cell supporting OD-SIB1; if there is uplink data to be transmitted in the target cell, requesting to acquire SIB1 of the target cell based on the request configuration parameter. The method of claim 1, wherein The request configuration parameter comprises a first request configuration parameter and a second request configuration parameter, and the first request configuration parameter is used for requesting to acquire SIB1 of the target cell based on uplink data transmission demand. The target request configuration parameter comprises the first request configuration parameter and the second request configuration parameter. The method according to claim 2, characterized in that If there is uplink data to be transmitted in the target cell, the target cell satisfies a data transmission measurement threshold. The method according to claim 1 or 2, characterized in that The method further comprises: The method according to claim 2 or 3, characterized in that if there is no uplink data to be transmitted in the target cell, requesting to acquire SIB1 of the target cell based on the second request configuration parameter. The request configuration parameter comprises at least one of the following information: access preamble, access occasion, power ramping step, repetition number of access preamble, SIB1 request number, SIB1 transmission period, time interval from sending access preamble to network response, response window duration, and SIB1 reception window duration. The method according to claim 5, characterized in that The first request configuration parameter comprises a first access preamble, and the second request configuration parameter comprises a second access preamble. The method according to claim 6, characterized in that The target request configuration parameter comprises the first request configuration parameter and the second request configuration parameter. The first request configuration parameter comprises a first access occasion, and the second request configuration parameter comprises a second access occasion. The target request configuration parameter comprises the first request configuration parameter and the second request configuration parameter. The method according to claim 6, characterized in that The first request configuration parameter comprises a first power ramping step, and the second request configuration parameter comprises a second power ramping step. The first power ramping step is greater than the second power ramping step. ​ The method according to claim 6, characterized in that ​ The first system information block SIB1 of the target cell is requested based on the target request configuration parameter, including: determining a first sending power based on the first power ramping step, and sending a first system information request based on the first sending power. The first system information block SIB1 of the target cell is requested based on the second request configuration parameter, including: determining a second sending power based on the second power ramping step, and sending a first system information request based on the second sending power. The first system information request is used to request the first system information block SIB1 of the target cell. The method according to claim 6, characterized in that The first request configuration parameter includes a first repetition number of an access preamble, and the second request configuration parameter includes a second repetition number of an access preamble; wherein the first repetition number is greater than the second repetition number. The first system information block SIB1 of the target cell is requested based on the first repetition number of the access preamble. The first system information block SIB1 of the target cell is requested based on the second repetition number of the access preamble. The method according to claim 6, characterized in that The first request configuration parameter includes a first request number of the first system information block SIB1, and the second request configuration parameter includes a second request number of the first system information block SIB1; wherein the first request number is greater than the second request number. The first system information block SIB1 of the target cell is requested based on the first request number of the first system information request. The first system information block SIB1 of the target cell is requested based on the second request number of the first system information request. The first request number and the second request number are used to limit the sending number of the first system information request, and the first system information request is used to request the first system information block SIB1 of the target cell. The method according to claim 6, characterized in that The first request configuration parameter includes a first time interval and a first response window duration of a response to the sending of the access preamble to the network, and the second request configuration parameter includes a second time interval and a second response window duration of a response to the sending of the access preamble to the network; wherein the first time interval is less than the second time interval, and / or the first response window duration is less than the second response window duration. The first system information block SIB1 of the target cell is requested based on the first time interval and the first response window duration, including: determining a first receiving response occasion, and receiving a response for requesting the first system information block SIB1 of the target cell at the first receiving response occasion. The acquiring the first system information block SIB1 of the target cell based on the second request configuration parameter comprises: determining a second receiving response opportunity according to the second time interval and the second response window duration, and receiving a response for acquiring the first system information block SIB1 of the target cell at the second receiving response opportunity. The method according to claim 6, characterized in that The first request configuration parameter comprises a first receiving window duration of the first system information block SIB1, and the second request configuration parameter comprises a second receiving window duration of the first system information block SIB1; the first receiving window duration is less than the second receiving window duration. The acquiring the first system information block SIB1 of the target cell based on the target request configuration parameter comprises: receiving the first system information block SIB1 of the target cell within the first receiving window duration. The acquiring the first system information block SIB1 of the target cell based on the second request configuration parameter comprises: receiving the first system information block SIB1 of the target cell within the second receiving window duration. The method according to claim 6, characterized in that The first request configuration parameter comprises a first transmission period of the first system information block SIB1, and the second request configuration parameter comprises a second transmission period of the first system information block SIB1; the first transmission period is less than the second transmission period. The acquiring the first system information block SIB1 of the target cell based on the target request configuration parameter comprises: acquiring the first system information block SIB1 of the target cell according to the first transmission period. The acquiring the first system information block SIB1 of the target cell based on the second request configuration parameter comprises: acquiring the first system information block SIB1 of the target cell according to the second transmission period. The method of claim 1, wherein The method further comprises: if there is no uplink data to be transmitted in the target cell, and the first system information block SIB1 of the target cell is in a transmitting state, receiving the first system information block SIB1 of the target cell; if there is no uplink data to be transmitted in the target cell, and the first system information block SIB1 of the target cell is not in a transmitting state, acquiring the first system information block SIB1 of the target cell based on the request configuration parameter. The method of claim 15, wherein The request configuration parameter comprises a first request configuration parameter and a second request configuration parameter; the first request configuration parameter is used for acquiring the first system information block SIB1 of the target cell based on uplink data transmission demand; The acquiring the first system information block SIB1 of the target cell based on the request configuration parameter if there is uplink data to be transmitted in the target cell comprises: acquiring the first system information block SIB1 based on the first request configuration parameter if there is uplink data to be transmitted in the target cell. The method is applied to a terminal device, and the terminal device supports on-demand first system information block (OD-SIB1). The method comprises: A data transmission method, characterized in that If uplink data needs to be transmitted in the target cell and the first system information block (SIB1) of the target cell needs to be acquired or has not been acquired, the uplink data is transmitted through the serving cell; wherein the serving cell is a cell currently providing services for the terminal device, the target cell supports OD-SIB1, and the serving cell satisfies a data transmission measurement threshold. The target cell satisfies a signal quality measurement threshold. The method of claim 17, wherein The method further comprises: The method according to claim 17 or 18, characterized in that sending first indication information based on radio resource control (RRC) signaling, wherein the first indication information is used to indicate at least one of the following information: the target cell is a candidate cell, a signal quality measurement result of the target cell, the terminal device needs to acquire the first system information block (SIB1) of the target cell, and the terminal device needs to acquire the first system information block (SIB1) of the target cell but has not acquired it. The method is applied to a network device, and the network device belongs to a serving cell, which is a cell currently providing services for a terminal device. The method comprises: A method of acquiring system information, characterized in that sending request configuration parameters, wherein the request configuration parameters are used for the terminal device to request to acquire the first system information block (SIB1) of the target cell, and the access parameters comprise first request configuration parameters and second request configuration parameters; wherein the first request configuration parameters are used for the terminal device to request to acquire the first system information block (SIB1) of the target cell based on uplink data transmission requirements, and the target cell supports OD-SIB1. The request configuration parameters comprise at least one of the following information: an access preamble, an access occasion, a power ramping step, a repetition number of the access preamble, a first system information block (SIB1) request number, a first system information block (SIB1) transmission period, a time interval from sending the access preamble to a network response, a response window duration, and a first system information block (SIB1) reception window duration. The method of claim 20, wherein The terminal device supports OD-SIB1, and the terminal device comprises: A terminal device characterized by comprising: a parameter receiving module configured to receive request configuration parameters, wherein the request configuration parameters are used for requesting to acquire the first system information block (SIB1) of the target cell, and the target cell supports OD-SIB1; an information acquiring module configured to request to acquire the first system information block (SIB1) of the target cell based on the request configuration parameters if uplink data needs to be transmitted in the target cell. ​ A terminal device, characterized by comprising: The terminal device supports on-demand first system information block OD-SIB1, and the terminal device comprises: The data transmission module is configured to, when there is uplink data to be transmitted in a target cell and the first system information block SIB1 of the target cell needs to be acquired or has not been acquired, transmit the uplink data through the serving cell; wherein the serving cell is a cell currently serving the terminal device, the target cell supports on-demand first system information block OD-SIB1, and the target cell satisfies a data transmission measurement threshold. A network device, characterized in that The network device belongs to a serving cell, the serving cell is a cell currently serving a terminal device, and the network device comprises: The parameter sending module is configured to send a request configuration parameter, the request configuration parameter being used for the terminal device to request to acquire the first system information block SIB1 of a target cell, and the access parameter comprising a first request configuration parameter and a second request configuration parameter; wherein the first request configuration parameter is used for the terminal device to request to acquire the first system information block SIB1 of the target cell based on uplink data transmission demand, and the target cell supports on-demand first system information block OD-SIB1. A communication device, characterized by The communication device comprises: A memory for storing computer programs or computer instructions; A processor for executing the computer programs or computer instructions stored in the memory, so that the communication device executes the method of any one of claims 1-16, or 17-19, or 20-21. A computer storage medium for storing a computer program, the computer program being executed to implement the method of any one of claims 1-16, or 17-19, or 20-21. A computer program product comprising instructions which, when executed on a computer, cause the computer to carry out the method of any one of claims 1-16, or 17-19, or 20-21.

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