WO2018165955A1 - Method, apparatus and system for obtaining system information - Google Patents

Abstract

The present application relates to the field of communication technology application. Provided are a method, apparatus and system for obtaining system information. The method comprises: a terminal receives a system information request response sent by a base station, the system information request response comprising transmission mode information, the transmission mode information being used for providing a transmission mode of the system information, and the transmission mode comprising a unicast mode or a broadcast mode; and the terminal obtains, on the basis of the transmission mode information, the system information sent by the base station. By means of the present application, redundant transmission of unnecessary information can be avoided and the waste of communication resources can be reduced. The present application is used for obtaining system information in a mobile communication system.

Description

System information acquisition method, device and system Technical field

The present disclosure relates to the field of communication technology applications, and in particular, to a method, device, and system for acquiring system information.

Background technique

With the rapid development of mobile communication, mobile Internet and Internet of Things have become the two main driving forces of mobile communication in the future, providing a broad application scenario for the fifth generation mobile communication technology (English: 5th-generation; 5G for short). . The system information in the 5G system (English: System Information; referred to as: SI) can spread the frequency range up to 100GHz (gigahertz). For such high-frequency networks, base stations and terminals (also called user equipment (English: User Equipment; abbreviated as: UE)) needs to use beamforming to transmit data to meet the channel quality requirements in the high-frequency data transmission process. How to transmit data by beamforming is how to Provide system information.

The system information can be transmitted by the main information module (English: Master Information Block; MIB) and multiple system information modules (English: System Information Blocks; referred to as: SIBs). In the related art, system information of a Long Term Evolution (LTE) network is transmitted by a base station through omnidirectional broadcasting. The SIBs and the MIBs each have a fixed transmission period. The SIBs include the SIB1 (the core system information module, also called the basic system information module) and the other (English: other) SIB (also called the SIBx). Usually, the scheduling information of other SIBs is carried. Broadcast in SIB1, where the information transmitted by SIB1 includes basic system information (English: Minimum SI), and the information transmitted by other SIBs includes other system information (English: Other SI).

However, since the current system information is periodically transmitted, it is easy to cause redundant transmission of non-essential system information, which causes waste of communication resources.

Summary of the invention

In order to solve the problem that the current system information acquisition process is easy to cause waste of communication resources, the present invention provides a method, device and system for acquiring system information. The technical solution is as follows:

The first aspect provides a method for obtaining system information, including:

Receiving, by the terminal, a system information request response sent by the base station, where the system information request response includes a transmission mode information, where the transmission mode information is used to provide a transmission mode of the system information, where the transmission mode includes a unicast mode or a broadcast mode;

The terminal acquires system information sent by the base station according to the transmission mode information.

Optionally, before the receiving, by the terminal, the system information request response sent by the base station, the method further includes:

The terminal sends a system information request to the base station, where the system information request is used to indicate attribute information of the system information requested by the terminal in an explicit or implicit manner.

Optionally, the terminal acquires system information sent by the base station according to the transmission mode information, including:

When the transmission mode information represents that the transmission mode of the system information is a unicast mode, the terminal sends a request for specifying a system information to the base station, where the specified system information request indicates the terminal in an explicit or implicit manner. Requested system information;

Receiving, by the terminal, a specified system information request response sent by the base station, where the specified system information request response includes system information requested by the terminal.

Optionally, when the transmission mode information includes an indication identifier of the system information that is sent by the terminal, or an indication that the transmission mode of the system information is a unicast mode, the transmission mode information represents that the system information transmission manner is Unicast mode.

Optionally, the terminal acquires system information sent by the base station according to the transmission mode information, including:

When the transmission mode information represents that the transmission mode of the system information is a broadcast mode, the terminal receives system information that is sent by the base station by using a broadcast manner.

Optionally, when the transmission mode information includes the resource indication information or the indication that the transmission mode of the system information is the broadcast mode, the transmission mode information represents that the transmission mode of the system information is a broadcast mode;

The resource indication information is used to indicate a transmission resource occupied by the system information when it is transmitted in a broadcast manner.

Optionally, the transmission mode information includes the resource indication information.

Receiving, by the terminal, system information that is sent by the base station by using a broadcast, including:

The terminal receives system information that is sent by the base station by using a broadcast manner on the transmission resource.

Optionally, the resource indication information includes at least one of a transmission period, a physical resource block, a modulation and coding manner, and an effective transmission duration.

Optionally, the attribute information is a classification identifier of the system information or a characteristic identifier of the system information.

Optionally, the terminal receives a system information request response sent by the base station, including:

The terminal receives feedback information of a physical random access resource sent by the base station, where the feedback information includes the system information request response.

Optionally, the terminal sends a system information request to the base station, including:

The terminal sends a system information request to the base station by using a physical random access resource.

Optionally, the terminal sends the specified system information request to the base station, including:

The terminal sends a specified system information request to the base station through connection establishment request information or connection establishment recovery or other radio resource control information.

The second aspect provides a method for obtaining system information, including:

The base station generates a system information request response according to the system information request sent by the terminal, where the system information request response includes a transmission mode information, where the transmission mode information is used to provide a transmission mode of the system information, where the transmission mode includes a unicast mode or Broadcast mode

The base station sends the system information request response to the terminal.

Optionally, before the generating, by the base station, the system information request response according to the system information sent by the terminal, the method further includes:

The base station receives a system information request sent by the terminal, where the system information request is used to indicate attribute information of the system information requested by the terminal in an explicit or implicit manner.

Optionally, the base station generates a system information request response according to the system information request sent by the terminal, including:

The base station counts the total number of system information requests that are received within the preset duration and carries the same attribute information;

When the total number of system information requests carrying the same attribute information is greater than a preset number threshold, the base station generates a system information request response, and the transmission mode indicated by the transmission mode information in the system information request response is a broadcast mode;

When the total number of system information requests carrying the same attribute information is not greater than the preset number threshold, the base station generates a system information request response, and the transmission mode indicated by the transmission mode information in the system information request response is unicast the way.

Optionally, after the sending, by the base station, the system information request response to the terminal, the method further includes:

Receiving, by the base station, a specified system information request sent by the terminal, where the specified system information request indicates system information requested by the terminal in an explicit or implicit manner, where the specified system information request is received by the terminal The transmission mode indicated by the transmission mode information in the system information request response is generated when the transmission mode is the unicast mode;

The base station sends a specified system information request response to the terminal, where the specified system information request response includes system information requested by the terminal.

Optionally, when the transmission mode information includes an indication identifier indicating that the terminal sends the required system information or an indication that the transmission mode of the system information is a unicast mode, the transmission mode information represents a transmission manner of the system information. Unicast mode;

When the transmission mode information includes the resource indication information or the indication that the transmission mode of the system information is the broadcast mode, the transmission mode information represents that the transmission mode of the system information is a broadcast mode;

The resource indication information is used to indicate a transmission resource occupied by the system information when it is transmitted in a broadcast manner.

Optionally, the transmission mode information includes the resource indication information, and after the base station sends the system information request response to the terminal, the method further includes:

The base station sends a specified system information request response to the terminal at the transmission resource.

Optionally, the resource indication information includes at least one of a transmission period, a physical resource block, a modulation and coding manner, and an effective transmission duration.

Optionally, the attribute information is a classification identifier of the system information or a characteristic identifier of the system information.

Optionally, the sending, by the base station, the system information request response to the terminal, including:

The base station sends feedback information of the physical random access resource to the terminal, where the feedback information includes the system information request response.

Optionally, the receiving, by the base station, the system information request sent by the terminal, including:

The base station receives a system information request sent by the terminal by using a physical random access resource.

Optionally, the receiving, by the base station, the specified system information request sent by the terminal, includes:

The base station receives a specified system information request sent by the terminal through connection establishment request information or connection establishment recovery or other radio resource control information.

The third aspect provides a device for acquiring system information, including:

a receiving module, configured to receive a system information request response sent by the base station, where the system information request response includes a transmission mode information, where the transmission mode information is used to provide a transmission mode of the system information, where the transmission mode includes a unicast mode or Broadcast mode

And an acquiring module, configured to acquire system information sent by the base station according to the transmission mode information.

Optionally, the device further includes:

a sending module, configured to send, to the base station, a system information request, where the terminal information is used to indicate a system requested by the terminal, in an explicit or implicit manner, before the terminal receives a system information request response sent by the base station Attribute information of the information.

Optionally, the acquiring module includes:

a sending submodule, configured to: when the transmission mode information represents that the transmission mode of the system information is a unicast mode, send a specified system information request to the base station, where the specified system information request is indicated by an explicit or implicit manner System information requested by the terminal;

And a receiving submodule, configured to receive a specified system information request response sent by the base station, where the specified system information request response includes system information requested by the terminal.

Optionally, when the transmission mode information includes an indication identifier of the system information that is sent by the terminal, or an indication that the transmission mode of the system information is a unicast mode, the transmission mode information represents that the system information transmission manner is Unicast mode.

Optionally, the acquiring module is specifically configured to:

And when the transmission mode information represents that the transmission mode of the system information is a broadcast mode, and receiving system information that is sent by the base station by using a broadcast manner.

Optionally, when the transmission mode information includes the resource indication information or the indication that the transmission mode of the system information is the broadcast mode, the transmission mode information represents that the transmission mode of the system information is a broadcast mode;

The resource indication information is used to indicate a transmission resource occupied by the system information when it is transmitted in a broadcast manner.

Optionally, the transmission mode information includes the resource indication information.

The acquiring module is specifically configured to: receive system information that is sent by the base station by using a broadcast manner on the transmission resource.

Optionally, the resource indication information includes at least one of a transmission period, a physical resource block, a modulation and coding manner, and an effective transmission duration.

Optionally, the attribute information is a classification identifier of the system information or a characteristic identifier of the system information.

Optionally, the receiving module is specifically configured to:

Receiving feedback information of the physical random access resource sent by the base station, where the feedback information includes the system information request response.

Optionally, the sending module is specifically configured to:

A system information request is sent to the base station through a physical random access resource.

Optionally, the sending submodule is specifically configured to:

The specified system information request is sent to the base station through connection establishment request information or connection establishment recovery or other radio resource control information.

The fourth aspect provides a device for acquiring system information, including:

a generating module, configured to generate a system information request response according to the system information request sent by the terminal, where the system information request response includes transmission mode information, where the transmission mode information is used to provide a transmission mode of the system information, where the transmission mode includes Unicast or broadcast mode;

The first sending module is configured to send the system information request response to the terminal.

Optionally, the device further includes:

a first receiving module, configured to: before the base station generates a system information request response according to the system information request sent by the terminal, receive a system information request sent by the terminal, where the system information request is used to indicate the mode in an explicit or implicit manner. The attribute information of the system information requested by the terminal.

Optionally, the generating module is specifically configured to:

The total number of system information requests received with the same attribute information received within the preset preset duration;

When the total number of the system information requests carrying the same attribute information is greater than the preset number threshold, the system information request response is generated, and the transmission mode indicated by the transmission mode information in the system information request response is a broadcast mode;

When the total number of the system information requests carrying the same attribute information is not greater than the preset number threshold, the system information request response is generated, and the transmission mode indicated by the transmission mode information in the system information request response is a unicast mode.

Optionally, the device further includes:

a second receiving module, configured to: after the base station sends the system information request response to the terminal, receive a specified system information request sent by the terminal, where the specified system information request is indicated by an explicit or implicit manner System information requested by the terminal, the specified system information request is the end And being generated when the transmission mode indicated by the transmission mode information in the received system information request response is a unicast mode;

And a second sending module, configured to send a specified system information request response to the terminal, where the specified system information request response includes system information requested by the terminal.

Optionally, when the transmission mode information includes an indication identifier indicating that the terminal sends the required system information or an indication that the transmission mode of the system information is a unicast mode, the transmission mode information represents a transmission manner of the system information. Unicast mode;

When the transmission mode information includes the resource indication information or the indication that the transmission mode of the system information is the broadcast mode, the transmission mode information represents that the transmission mode of the system information is a broadcast mode;

The resource indication information is used to indicate a transmission resource occupied by the system information when it is transmitted in a broadcast manner.

Optionally, the transmission mode information includes the resource indication information, and the device further includes:

And a third sending module, configured to send, after the base station sends the system information request response to the terminal, a specified system information request response to the terminal in the transmission resource.

Optionally, the resource indication information includes at least one of a transmission period, a physical resource block, a modulation and coding manner, and an effective transmission duration.

Optionally, the attribute information is a classification identifier of the system information or a characteristic identifier of the system information.

Optionally, the first sending module is specifically configured to:

Sending feedback information of the physical random access resource to the terminal, where the feedback information includes the system information request response.

Optionally, the first receiving module is specifically configured to:

Receiving a system information request sent by the terminal through a physical random access resource.

Optionally, the second receiving module is specifically configured to:

Receiving, by the terminal, a specified system information request sent by connection establishment request information or connection establishment recovery or other radio resource control information.

The fifth aspect provides a system for acquiring system information, including:

a terminal and a base station, the terminal comprising the device for acquiring system information according to any one of the third aspects;

The base station includes the apparatus for acquiring system information according to any one of the fourth aspects.

Method, device and system for acquiring system information provided by embodiments of the present invention, The system information request response carrying the transmission mode information is sent according to the system information request of the terminal, and the terminal may acquire the system information according to the transmission mode information, where the system information is obtained by the terminal according to its own needs, and is not periodically transmitted, so Compared with the prior art, redundant transmission of non-essential information is avoided, and communication resource waste is reduced.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

1-1 is a schematic diagram of an implementation environment involved in a method for acquiring system information provided in some embodiments of the present invention;

Figure 1-2 is a schematic diagram of a conventional transmission method of system information;

2-1 is a schematic flowchart of a method for acquiring system information according to an embodiment of the present invention;

2-2 is a schematic flowchart of a method for generating a system information request response according to an embodiment of the present invention;

2-3 is a schematic flowchart of a method for acquiring system information by a terminal according to an embodiment of the present invention;

3-1 to 3-2 are block diagrams of apparatus for acquiring system information according to an exemplary embodiment of the present invention;

3-3 is a block diagram of an obtaining module according to an exemplary embodiment of the present invention;

4-1 to 4-4 are block diagrams of apparatus for acquiring system information according to another exemplary embodiment of the present invention;

FIG. 5 is a block diagram of an apparatus for acquiring system information according to still another exemplary embodiment of the present invention.

The embodiments of the present invention have been shown in the foregoing drawings and are described in detail herein. The drawings and the written description are not intended to limit the scope of the present invention in any way,

detailed description

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

1-1 is a schematic diagram of an implementation environment involved in a method for acquiring system information provided by an embodiment of the present disclosure. The implementation environment can include at least one base station 101 and a plurality of terminals 102.

In the 5G system, the base station 101 can be a next generation base station (English: generation node B; abbreviated as: gNB). In the LTE system, the base station 101 can be an evolved base station (English: evolved Node B; eNB for short). The terminal 102 can be a smartphone, a computer, a multimedia player, an e-reader, a wearable device, or the like. A connection can be established between the base station 101 and the terminal 102 via a wireless network, and the base station 101 can transmit system information to the terminal 102.

System information can be transmitted by MIBs and SIBs. SIBs include SIB1 and other SIBs, where SIB1 is the carrier of basic system information, and other SIBs are carriers of other system information. In the embodiment of the present invention, the definition of the basic system information and other system information may refer to the definition of the current standard conference.

For example, in the RAN2 #95 meeting in August 2016, the system information in the 5G system can be divided into basic system information and a plurality of other system information, wherein the definitions of the basic system information and other system information are:

"Minimum SI": Minimum SI needs to be broadcasted periodically. Content will at least include information to support cell selection, for acquiring other SI, for accessing the cell. (Chinese: Basic system information needs to be broadcast periodically. The content of the basic system information includes at least information supporting cell selection, obtaining other system information, and accessing cell information.)

"Other SI": Other SI with everything notbroadcasted in minimum SI. (Chinese: Other system information includes everything except information transmitted by the underlying system.)

Referring to Figure 1-2, Figure 1-2 shows the traditional system information transmission mode. The SIBs and the MIBs have fixed transmission periods. Generally, the scheduling information of other SIBs is carried in the SIB1 for broadcast. Figure 1 2 Schematically depicting SIB1 and MIB, as shown in Figure 1-2, SIB1 is periodically transmitted with t1 as the time interval, and MIB is periodically transmitted with t2 as the time interval.

However, since the current system information is periodically transmitted, it is easy to cause redundant transmission of non-essential system information, which causes waste of communication resources.

In order to solve the above technical problem, the embodiment of the present invention provides a method for acquiring system information, which may be related to information in a random access process of an LTE system and a derivative system thereof, and the random access procedure may also be referred to as a 4-step randomization process. In the access process, the 4-step random access process includes: (1) terminal orientation The base station sends a preamble (English: preamble), and the main function is to initiate random access in the uplink to perform uplink information synchronization. The preamble is called information 1 (English: message1; abbreviation: MSG1); (2), the base station sends a random to the terminal. The access response (English: Random Access Response; RAR), the main function is to inform the uplink synchronization time deviation in the downlink information, and configure the resources used for transmission in the subsequent connection establishment process. The RAR is called information 2 (English: message2; referred to as: MSG2); (3) The terminal sends a connection establishment request to the base station, and the main function is to issue a connection establishment request, the connection establishment request carries the connection establishment reason, the identity identifier of the terminal (English: identification; referred to as ID), and the like, the connection The establishment request is called information 3 (English: message 3; abbreviation: MSG3); (4), the base station sends contention resolution (English: contention resolution) information to the terminal, the main function is to perform contention resolution, and the connection establishment request response is called information 4 (English: message4; referred to as: MSG4).

As shown in FIG. 2-1, the method for obtaining system information provided by the embodiment of the present invention includes:

Step 201: The terminal sends a system information request to the base station, where the system information request is used to indicate attribute information of the system information requested by the terminal in an explicit or implicit manner.

Optionally, the terminal may send a system information request to the base station by using a physical random access resource, for example, the system request information may be carried by using the foregoing MSG1.

The attribute information is used to reflect the attribute of the system information, and may be a classification identifier of the system information or a characteristic identifier of the system information. The classification identifier is used to indicate the category of the system information, and the characteristic identifier is used to indicate the characteristics of the system information.

The system information can be divided into different categories according to the difference of the content and the urgency of the terminal to obtain the system information. The system information of different categories can be represented by different classification identifiers. For example, the system information can be divided into: cell selection and reselection according to the category. Related system information, whose classification identifier is 1, that is, the system information is SI1; the wireless channel configuration information has a classification identifier of 2, that is, the system information is SI2; the broadcast multicast service related system information, and its classification The identifier is 3, that is, the system information is SI3; the terminal directly connects to the service system information, and the classification identifier is 4, that is, the system information is SI4. It should be noted that the foregoing classification manner is only a schematic description. The classification of the actual system information and the form of the corresponding classification identifier may be pre-agreed by the base station and the terminal. For example, the system information may be classified into system information of the cell reselection class according to the category. The classification identifier is 00, and the system information related to the broadcast multicast service is classified as 01, and the system information related to the Internet of Vehicles has a classification identifier of 10.

System information can also be classified according to characteristics, and can be divided into system information of different characteristics. System information of different characteristics can be represented by different characteristic identifiers. For example, according to the connection characteristics of the terminal and the base station, system information can be classified into: connected state related systems. Information, whose characteristic identifier is 00; access related system information, Its characteristic identifier is 01; the idle state related system information, its characteristic identifier is 10, and so on.

The system information request may indicate the attribute information of the system information in an explicit or implicit manner, and the system information request indicates the attribute information of the system information in an explicit manner, that is, the system information request explicitly indicates the attribute information by using the identifier or the indication information. For example, the system information request may carry an identifier of the attribute information. For example, if the identifier of the attribute information of the system information that the terminal wants to request is: 2, the identifier of the corresponding system information request is 2. The system information request indicates the attribute information of the system information in an implicit manner, and the system information request indirectly indicates the attribute information of the system information requested by the terminal through a specific physical random access channel (English: Physical Random Access Channel; PRACH). That is, different PRACH resources correspond to different attribute information or different sets of attribute information (each group of attribute information includes at least two types of attribute information), and when the terminal wants to provide one type of attribute information, the corresponding PRACH resource plan is adopted. For example, the identifier of the attribute information corresponding to the PRACH resource 1 is 1, and the identifier of the attribute information corresponding to the PRACH resource 2 is 2. The terminal uses the PRACH resource 2 to send a system information request, that is, the identifier of the attribute information that the terminal wants to request the system information is 2.

Step 202: The base station receives a system information request sent by the terminal.

Optionally, the base station may receive a system information request sent by the terminal by using a physical random access resource. For example, the system request information is carried in the above MSG1.

Step 203: The base station generates a system information request response according to the system information request sent by the terminal, where the system information request response includes transmission mode information, where the transmission mode information is used to provide a transmission mode of the system information.

In the embodiment of the present invention, the transmission mode includes a unicast mode or a broadcast mode. Optionally, as shown in FIG. 2-2, the process for the base station to generate the system information request response according to the system information request sent by the terminal may include:

Step 2031: The base station counts the total number of system information requests that are received within the preset duration and carries the same attribute information. Go to step 2032 or step 2033.

In the embodiment of the present invention, the preset duration is preset by the base station according to a specific implementation scenario, for example, several subframes.

The base station counts the total number of system information requests that are received in the preset duration and carries the same attribute information, and may perform corresponding processing on the system information request carrying the same attribute information according to the comparison result of the total number and the preset number threshold. Referring to step 201, when the system information request indicates the attribute information of the system information in an explicit manner, the base station may count the same identifier or the number of indication information to determine the total number of system information requests carrying the same attribute information; Request by implicit means When the attribute information of the system information is displayed, for example, when different PRACH resources correspond to different attribute information, the base station may count the total number of system information requests transmitted by each PRACH resource, and each channel corresponds to a system information request of one attribute information.

Assuming that the preset duration is a duration of 5 subframes, the base station counts the total number of system information requests that are received in the five subframes that carry the same attribute information. For example, the base station receives five identifiers 00 carrying the attribute information within a preset duration. The system information request receives 22 system information requests for the identifier 01 carrying the attribute information.

Step 2032: When the total number of system information requests carrying the same attribute information is greater than a preset number threshold, the base station generates a system information request response, and the transmission mode represented by the transmission mode information in the system information request response is a broadcast mode.

It should be noted that the preset number threshold may be preset by the base station according to its own transmission capability and the transmission scenario. For example, the preset number threshold is 20. Taking the example in step 2031 as an example, the system information request of the identifier 01 carrying the attribute information is 22, and if it is greater than 20, the transmission mode information in the system information request response for the system information request of the identifier 01 carrying the attribute information is represented. The transmission method is broadcast mode.

In the embodiment of the present invention, the transmission mode information may represent the broadcast mode in multiple manners. For example, when the transmission mode information includes the resource indication information or the indication that the transmission mode of the system information is the broadcast mode, the transmission mode information represents the system information. The transmission mode is a broadcast mode, where the resource indication information is used to indicate the transmission resource occupied by the system information when the system information is transmitted in a broadcast manner. It should be noted that the resource indicated by the resource indication information may be part of resources or all resources. As long as the terminal can ensure that the resources occupied by the information transmission can be effectively determined according to the resource indication information, the terminal can effectively obtain the information.

Step 2033: When the total number of system information requests carrying the same attribute information is not greater than the preset number threshold, the base station generates a system information request response, and the transmission mode indicated by the transmission mode information in the system information request response is a unicast mode.

Taking the example in step 2031 as an example, the system information request of the identifier 00 carrying the attribute information is 5, less than 20, and the transmission mode information in the system information request response for the system information request of the identifier 00 carrying the attribute information is represented. The transmission method is unicast.

In the embodiment of the present invention, the transmission mode information may be represented by the unicast mode in a plurality of manners. When the transmission mode information includes the indication identifier of the system information required by the terminal, or the indication that the transmission mode of the system information is the unicast mode, The transmission mode information represents that the transmission of system information is unicast.

The indication identifier of the system information required by the terminal is used to indicate that the terminal can perform the re-request of the system information required by the terminal.

According to the foregoing steps 2032 and 2033, in the embodiment of the present invention, when the total number of system information requests carrying the same attribute information is large, the base station indicates the transmission mode of the broadcast, that is, the subsequent transmission of the system information by using the broadcast mode, When the total number of system information requests of the attribute information is small, the transmission mode of the unicast is indicated, that is, the system information is transmitted by using the unicast mode, and the transmission mode is dynamically selected according to the comparison result of the total number of system information requests and the preset number threshold. It can realize flexible utilization of transmission resources and achieve compatibility between unicast mode and broadcast mode.

Step 204: The base station sends a system information request response to the terminal.

Optionally, the base station may send, to the terminal, feedback information of the physical random access resource, where the feedback information includes a system information request response. This feedback information can be MSG2.

Step 205: The terminal receives a system information request response sent by the base station.

Optionally, the terminal receives feedback information of the physical random access resource sent by the base station, where the feedback information includes a system information request response. This feedback information can be MSG2.

Step 206: The terminal acquires system information sent by the base station according to the transmission mode information.

In the embodiment of the present invention, the transmission mode represented by the transmission mode information is different, and the acquisition action performed by the terminal is different. Optionally, as shown in FIG. 2-3, the terminal acquires system information sent by the base station according to the transmission mode information. The process can include:

Step 2061: The terminal determines a transmission mode provided by the transmission mode information. Go to step 2062 or 2066.

In the embodiment of the present invention, the transmission mode includes a unicast mode or a broadcast mode. Referring to the above steps 2032 and 2033, when the transmission mode information includes an indication identifier indicating that the terminal transmits the required system information or an indication that the transmission mode of the system information is the unicast mode, the transmission mode information represents that the transmission mode of the system information is single. When the transmission mode information includes the resource indication information or the indication that the transmission mode of the system information is the broadcast mode, the transmission mode information represents the transmission mode of the system information, and the resource indication information is used to indicate the system information to be broadcast. The transmission resource occupied by the mode transmission.

Step 2062: When the transmission mode information represents that the transmission mode of the system information is the unicast mode, the terminal sends a request for specifying the system information to the base station, and the system information request is specified to indicate the system information requested by the terminal in an explicit or implicit manner.

The terminal may indicate the system information requested by the terminal in an explicit or implicit manner, and specify system information. The requesting to indicate in the explicit manner that the system information requested by the terminal refers to the system information that the specified system information request explicitly indicates the terminal request by the identifier or the indication information, for example, the specified system information request may carry the system information that the terminal wants to request. Logo. For example, if the terminal wants to request other system information: SI3, the corresponding specified system information request carries the identifier 3. Specifying the system information request to indicate in the implicit manner that the system information requested by the terminal refers to the system information that the specified system information request indirectly indicates the terminal request through a specific PRACH resource. That is, different PRACH resources correspond to different system information or different groups of system information (each group of system information includes at least two types of system information), and if the terminal requests corresponding system information, the corresponding PRACH resource plan is adopted. For example, if the PRACH resource 1 corresponds to SI1 and the PRACH resource 2 corresponds to SI2, the terminal uses the PRACH resource 2 to send a specified system information request, that is, the representative terminal wants to request SI2.

Optionally, the terminal may send the specified system information request to the base station by using connection establishment request information or connection establishment recovery or other radio resource control information. For example, the terminal may carry the specified system information request through the foregoing MSG3.

Step 2063: The base station receives the specified system information request sent by the terminal.

It should be noted that the base station may receive the specified system information request sent by the terminal through the connection establishment request information or the connection establishment recovery or other radio resource control information. For example, the specified system information request may be carried in the MSG3 described above.

Step 2064: The base station sends a specified system information request response to the terminal, where the specified system information request response includes system information requested by the terminal.

In the foregoing step 203, the transmission mode information further includes resource indication information. Correspondingly, after receiving the specified system information request sent by the terminal, the base station may send a specified system information request response to the terminal in the transmission resource to use the system required by the terminal. The information is transmitted to the terminal.

Step 2065: The terminal receives a specified system information request response sent by the base station, where the specified system information request response includes system information requested by the terminal.

Step 2066: When the transmission mode information represents that the transmission mode of the system information is a broadcast mode, the terminal receives system information that is sent by the base station by using a broadcast manner.

Optionally, in step 203, the transmission mode information in the system information request response generated by the base station further includes resource indication information, in step 2065, the base station sends a specified system information request response to the terminal in the transmission resource, and correspondingly, In step 2066, the terminal receives the system information that the base station sends by the broadcast mode on the transmission resource.

The resource indication information includes a transmission period, a physical resource block, a modulation and coding mode, and an effective transmission. At least one of the length of time lost.

The transmission period is used to indicate the duration of the system information transmission, for example, 5 ms; the physical resource block is used to indicate the resource block occupied by the system information during the transmission process; and the modulation and coding mode is used to indicate the modulation and coding mode of the system information, for example, The Turbo coding mode is adopted; the effective transmission duration is used to indicate the effective duration of transmission of the system information, that is, the system information transmitted during this duration is valid, and the system information exceeding the duration belongs to the invalid system information, for example, the validity is valid. The transmission duration can be 100ms.

Further, the foregoing resource indication information may further include parameters such as the number of transmissions, which is not limited by the embodiment of the present invention.

In practical applications, based on different resource indication information, the base station sends different system information, and correspondingly, the manner in which the terminal receives system information is also different.

For example, when the resource indication information includes a transmission period, the base station performs periodic transmission of system information according to the transmission period, and the terminal periodically receives system information according to the transmission period. For example, the terminal wants to request other system information: SI2. The resource indication information includes a transmission period of 5 ms, and the base station transmits the SI2 every 5 ms. Correspondingly, the terminal receives the SI2 transmitted by the base station every 5 ms.

When the resource indication information includes the number of transmissions, the number of times the base station transmits the system information is equal to the number of transmissions, and the number of times the terminal receives the system information is less than or equal to the number of transmissions, usually the terminal repeatedly performs the action of receiving the system information until the system information is successfully received. Stop receiving system information, or stop receiving system information after the number of times of reception is equal to the number of transmissions. For example, the terminal wants to request other system information: SI4, the resource indication information includes 2 transmission times, and the base station transmits the same. SI4 twice, the terminal repeatedly performs the action of receiving SI4 until the SI4 is successfully received, or after receiving the SI4 action for the second time, the receiving action is stopped even if the SI3 is not successfully received, because the base station no longer performs the transmission of the SI4. Up

When the resource indication information includes a modulation and coding mode, the base station transmits the system information by using the modulation and coding mode to perform modulation and coding of the system information, and the terminal uses the decoding and demodulation method corresponding to the modulation and coding mode to perform decoding and demodulation of the system information, for example, the terminal. What is to be requested is the basic system information: SI1, the resource indication information includes the encoding mode of the Turbo coding mode, and the terminal uses the corresponding decoding mode of the Turbo coding mode to perform the decoding of the SI1;

When the resource indication information includes resources used for transmission, the base station performs system information transmission on the resource, and the terminal performs system information reception on the resource;

When the resource indication information includes the transmission effective duration, the base station performs the system within the effective period of the transmission. After receiving the response to the system information request, the terminal may repeatedly perform the action of receiving the system information until the system information is successfully received, the system information is stopped, or the receiving time reaches the effective transmission duration, and the system information is stopped. The receiving duration is the duration of the receiving operation from the receiving moment of the system information request response. For example, the terminal wants to request other system information: SI3, the resource indication information includes an effective transmission duration of 10 ms, and the base station is within the 10 ms. The SI3 transmission is performed, and the terminal receives the system information in the 10 ms until the system information is successfully received, the receiving operation is stopped, or the receiving operation is stopped until the receiving time exceeds 10 ms.

It should be noted that the foregoing example only takes one parameter in the resource indication information as an example. In actual application, the resource indication information includes at least one of a transmission period, a physical resource block, a modulation and coding mode, and an effective transmission duration. Therefore, it is necessary to appropriately combine the above execution manners according to the specific content in the resource indication information.

For example, when the resource indication information includes: the effective transmission duration and the transmission period, after transmitting the system information request response, the base station may repeatedly perform the transmission of the system information according to the transmission period until the effective transmission duration is reached, and the system information is stopped. The effective transmission duration can be timed from the time when the base station sends a system information request response. Correspondingly, after receiving the system information request response, the terminal may repeatedly perform the action of receiving the system information according to the transmission period until the system information is successfully received, the system information is stopped, or the receiving time reaches the effective transmission duration, and the receiving system is stopped. Information; wherein the reception duration is a duration of performing a reception operation from a reception time of the system information request response.

For example, assuming that the effective transmission duration is 10 ms, the transmission period is 5 ms, and the number of transmissions is 2, the base station needs to transmit system information twice in 5 ms intervals at 10 ms. The terminal needs to repeatedly perform the operation of receiving system information in a time interval of 5 ms within 10 ms until the system information is successfully received, and the system information is stopped, or the receiving time reaches 10 ms, the system information is stopped, or the number of receiving times exceeds 2 times. Stop receiving system information.

Optionally, after successfully receiving the system information, the terminal may send, to the base station, feedback information indicating that the system information is successfully received. Since the base station can periodically send system information, that is, the system information may be sent multiple times, and the terminal does not need to perform the system information receiving action after successfully receiving the system information. Therefore, the terminal may exist in the first execution of the system information receiving action. When the system information has been successfully received, the feedback information plays a corresponding prompting role, and the base station terminal can be prompted to successfully receive the system, so that after receiving the feedback information, the base station can stop the transmission of the corresponding system information, regardless of the system. Whether the number of transmissions of information or the effective transmission duration meets the requirements of the transmission parameters does not need to be performed. The system information is sent until the next system information request is received, which can effectively avoid resource waste.

It should be noted that the sequence of the steps of the system information obtaining method provided by the embodiment of the present invention may be appropriately adjusted, and the steps may also be correspondingly increased or decreased according to the situation, and any person skilled in the art may be within the technical scope disclosed by the present invention. The method that can be easily conceived of the changes should be covered by the scope of the present invention, and therefore will not be described again.

In summary, in the method for acquiring system information provided by the embodiment of the present invention, the base station can send a system information request response carrying the transmission mode information according to the system information of the terminal, and the terminal can acquire system information and system information according to the transmission mode information. The terminal is obtained in a targeted manner according to its own needs, and is not periodically transmitted. Therefore, compared with the prior art, redundant transmission of non-essential information is avoided, and communication resource waste is reduced. And the transmission mode information can be used to indicate the unicast mode and the broadcast mode. The base station can dynamically select the transmission mode according to the comparison between the total number of system information requests and the preset number threshold, thereby enabling flexible use of the transmission resources to achieve unicasting. The mode is compatible with the broadcast mode.

An embodiment of the present invention provides a device for acquiring system information 30, as shown in Figure 3-1, including:

The receiving module 301 is configured to receive a system information request response sent by the base station, where the system information request response includes a transmission mode information, where the transmission mode information is used to provide a transmission mode of the system information, where the transmission mode includes a unicast mode. Or broadcast mode;

The obtaining module 302 is configured to acquire system information sent by the base station according to the transmission mode information.

According to the system information acquiring apparatus provided by the embodiment of the present invention, the base station can send a system information request response carrying the transmission mode information according to the system information of the terminal, and the acquiring module can acquire the system information, the system information according to the transmission mode information acquired by the receiving module. The terminal is obtained in a targeted manner according to its own needs, and is not periodically transmitted. Therefore, compared with the prior art, redundant transmission of non-essential information is avoided, and communication resource waste is reduced.

Optionally, as shown in Figure 3-2, the device further includes:

The sending module 303 is configured to send a system information request to the base station before the terminal receives the system information request response sent by the base station, where the system information request is used to indicate the terminal request by an explicit or implicit manner. Attribute information of system information.

Optionally, as shown in Figure 3-3, the obtaining module 302 includes:

The sending submodule 3021 is configured to: when the transmission mode information represents that the transmission mode of the system information is a unicast mode, send a specified system information request to the base station, where the specified system information request is in an explicit or implicit manner. Instructing system information requested by the terminal;

The receiving submodule 3022 is configured to receive a specified system information request response sent by the base station, where the specified system information request response includes system information requested by the terminal.

Optionally, when the transmission mode information includes an indication identifier of the system information that is sent by the terminal, or an indication that the transmission mode of the system information is a unicast mode, the transmission mode information represents that the system information transmission manner is Unicast mode.

Optionally, the obtaining module 302 is specifically configured to:

And when the transmission mode information represents that the transmission mode of the system information is a broadcast mode, and receiving system information that is sent by the base station by using a broadcast manner.

Optionally, when the transmission mode information includes the resource indication information or the indication that the transmission mode of the system information is the broadcast mode, the transmission mode information represents that the transmission mode of the system information is a broadcast mode;

The resource indication information is used to indicate a transmission resource occupied by the system information when it is transmitted in a broadcast manner.

Optionally, the transmission mode information includes the resource indication information.

The acquiring module 302 is specifically configured to: receive system information that is sent by the base station by using a broadcast manner on the transmission resource.

Optionally, the resource indication information includes at least one of a transmission period, a physical resource block, a modulation and coding manner, and an effective transmission duration.

Optionally, the attribute information is a classification identifier of the system information or a characteristic identifier of the system information.

Optionally, the receiving module 301 is specifically configured to:

Receiving feedback information of the physical random access resource sent by the base station, where the feedback information includes the system information request response.

Optionally, the sending module 303 is specifically configured to:

A system information request is sent to the base station through a physical random access resource.

The sending submodule 3021 is specifically configured to:

The specified system information request is sent to the base station through connection establishment request information or connection establishment recovery or other radio resource control information.

According to the system information acquiring apparatus provided by the embodiment of the present invention, the base station can send a system information request response carrying the transmission mode information according to the system information of the terminal, and the acquiring module can acquire the system information, the system information according to the transmission mode information acquired by the receiving module. The terminal is obtained in a targeted manner according to its own needs, and is not periodically transmitted. Therefore, compared with the prior art, redundant transmission of non-essential information is avoided, and communication resource waste is reduced.

An embodiment of the present invention provides a device 40 for acquiring system information, as shown in Figure 4-1, including:

The generating module 401 is configured to generate a system information request response according to the system information request sent by the terminal, where the system information request response includes transmission mode information, where the transmission mode information is used to provide a transmission mode of the system information, and the transmission mode Including unicast or broadcast mode;

The first sending module 402 is configured to send the system information request response to the terminal.

According to the system information acquiring apparatus provided by the embodiment of the present invention, the first sending module can send a system information request response that carries the transmission mode information generated by the generating module according to the system information of the terminal, and the terminal can acquire the system information according to the transmission mode information. The system information is obtained by the terminal according to its own needs, and is not periodically transmitted. Therefore, compared with the prior art, redundant transmission of non-essential information is avoided, and communication resource waste is reduced.

Optionally, as shown in FIG. 4-2, the device 40 further includes:

The first receiving module 403 is configured to: before the base station generates a system information request response according to the system information request sent by the terminal, receive a system information request sent by the terminal, where the system information request is used to indicate by an explicit or implicit manner. Attribute information of system information requested by the terminal.

Optionally, the generating module 401 is specifically configured to:

The total number of system information requests received with the same attribute information received within the preset preset duration;

When the total number of the system information requests carrying the same attribute information is greater than the preset number threshold, the system information request response is generated, and the transmission mode indicated by the transmission mode information in the system information request response is a broadcast mode;

When the total number of the system information requests carrying the same attribute information is not greater than the preset number threshold, the system information request response is generated, and the transmission mode indicated by the transmission mode information in the system information request response is a unicast mode.

Optionally, as shown in FIG. 4-3, the device 40 further includes:

The second receiving module 404 is configured to: after the base station sends the system information request response to the terminal, receive a specified system information request sent by the terminal, where the specified system information request is passed Explicitly or implicitly indicating the system information requested by the terminal, where the specified system information request is when the transmission mode indicated by the transmission mode information in the system information request response received by the terminal is a unicast mode Generated

The second sending module 405 is configured to send a specified system information request response to the terminal, where the specified system information request response includes system information requested by the terminal.

Optionally, when the transmission mode information includes an indication identifier indicating that the terminal sends the required system information or an indication that the transmission mode of the system information is a unicast mode, the transmission mode information represents a transmission manner of the system information. Unicast mode;

When the transmission mode information includes the resource indication information or the indication that the transmission mode of the system information is the broadcast mode, the transmission mode information represents that the transmission mode of the system information is a broadcast mode;

The resource indication information is used to indicate a transmission resource occupied by the system information when it is transmitted in a broadcast manner.

Optionally, as shown in FIG. 4-4, the transmission mode information includes the resource indication information, and the device 40 further includes:

The third sending module 406 is configured to send, after the base station sends the system information request response to the terminal, a specified system information request response to the terminal in the transmission resource.

Optionally, the resource indication information includes at least one of a transmission period, a physical resource block, a modulation and coding manner, and an effective transmission duration.

Optionally, the attribute information is a classification identifier of the system information or a characteristic identifier of the system information.

Optionally, the first sending module 402 is specifically configured to:

Sending feedback information of the physical random access resource to the terminal, where the feedback information includes the system information request response.

Optionally, the first receiving module 403 is specifically configured to:

Receiving a system information request sent by the terminal through a physical random access resource.

Optionally, the second receiving module 404 is specifically configured to:

Receiving, by the terminal, a specified system information request sent by connection establishment request information or connection establishment recovery or other radio resource control information.

The device for acquiring system information provided by the embodiment of the present invention can send a system information request carrying the transmission mode information generated by the generation module according to the system information request of the terminal. In response, the terminal can obtain system information according to the transmission mode information, and the system information is obtained by the terminal according to its own needs, and is not periodically transmitted. Therefore, redundant transmission of non-essential information is avoided compared with the prior art. , reducing the waste of communication resources.

An embodiment of the present invention provides a system for acquiring system information, including:

An embodiment of the present invention provides a system for acquiring system information, including: a terminal and a base station.

The terminal may include the system information obtaining device 30 shown in Figure 3-1 or 3-2 above;

The base station may include the acquisition device 40 of the system information shown in any of Figures 4-1 to 4-5.

Please refer to FIG. 5, which is a schematic structural diagram of a device for acquiring system information according to an exemplary embodiment of the present invention. The system information acquiring device 50 may be the above-mentioned terminal 40 or the base station 50, and the system information acquiring device 50 includes a processor 52 and a network interface 54.

Processor 52 includes one or more processing cores. The processor 52 executes various functional applications and data processing by running software programs and modules.

There may be multiple network interfaces 54, which are used to communicate with other storage devices or network devices.

Optionally, the system information acquiring device 50 further includes a component such as a memory 56, a bus 58, and the like. The memory 56 and the network interface 54 are connected to the processor 52 via a bus 58 respectively.

Memory 56 can be used to store software programs as well as modules. Specifically, the memory 56 can store the operating system 562, the application module 564 required for at least one function. The operating system 562 can be an operating system such as Real Time eXecutive (RTX), LINUX, UNIX, WINDOWS, or OS X.

In some embodiments, when the system information acquisition device 50 is the base station 40, the network interface 54 can be a transceiver antenna (which can also be considered a transmitter and a receiver), and the application module 564 stored in the memory 56 can perform the above step 202. , steps 203 and 204;

When the system information acquisition device 50 is the terminal 30, the network interface 54 may be a transceiver antenna (which may also be regarded as a transmitter and a receiver), and the application module 564 stored in the memory 56 may perform the above steps 201, 205 and 206. Wait for steps.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the module described above can refer to the corresponding process in the foregoing method embodiments, and details are not described herein again.

Those skilled in the art can understand that all or part of the steps of implementing the above embodiments can be The completion of the hardware may also be performed by a program to instruct related hardware. The program may be stored in a computer readable storage medium. The storage medium mentioned above may be a read only memory, a magnetic disk or an optical disk.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims (47)

A method for acquiring system information, comprising: Receiving, by the terminal, a system information request response sent by the base station, where the system information request response includes a transmission mode information, where the transmission mode information is used to provide a transmission mode of the system information, where the transmission mode includes a unicast mode or a broadcast mode; The terminal acquires system information sent by the base station according to the transmission mode information. The method according to claim 1, wherein before the receiving the system information request response sent by the base station, the method further comprises: The terminal sends a system information request to the base station, where the system information request is used to indicate attribute information of the system information requested by the terminal in an explicit or implicit manner. The method of claim 1 wherein The acquiring, by the terminal, the system information sent by the base station according to the transmission mode information, including: When the transmission mode information represents that the transmission mode of the system information is a unicast mode, the terminal sends a request for specifying a system information to the base station, where the specified system information request indicates the terminal in an explicit or implicit manner. Requested system information; Receiving, by the terminal, a specified system information request response sent by the base station, where the specified system information request response includes system information requested by the terminal. The method according to claim 3, wherein the transmission mode information is included when the transmission mode information includes an indication indication that the terminal transmits the required system information or an indication that the transmission mode of the system information is a unicast mode. The transmission method representing the system information is a unicast mode. The method according to claim 1, wherein the terminal acquires system information sent by the base station according to the transmission mode information, including: When the transmission mode information represents that the transmission mode of the system information is a broadcast mode, the terminal receives system information that is sent by the base station by using a broadcast manner. The method according to claim 5, wherein when the transmission mode information includes resource indication information or an indication that the transmission mode of the system information is a broadcast mode, the transmission mode information represents a transmission mode of the system information. For broadcasting mode; The resource indication information is used to indicate a transmission resource occupied by the system information when it is transmitted in a broadcast manner. The method according to claim 6, wherein the transmission mode information comprises the resource indication information, Receiving, by the terminal, system information that is sent by the base station by using a broadcast, including: The terminal receives system information that is sent by the base station by using a broadcast manner on the transmission resource. The method of claim 6 wherein: The resource indication information includes at least one of a transmission period, a physical resource block, a modulation and coding manner, and an effective transmission duration. The method according to claim 2, wherein the attribute information is a classification identifier of the system information or a characteristic identifier of the system information. A method according to any one of claims 1 to 9, wherein Receiving, by the terminal, a system information request response sent by the base station, including: The terminal receives feedback information of a physical random access resource sent by the base station, where the feedback information includes the system information request response. A method according to any one of claims 2 to 10, characterized in that Sending, by the terminal, a system information request to the base station, including: The terminal sends a system information request to the base station by using a physical random access resource. A method according to any one of claims 3 to 11, wherein Sending, by the terminal, the specified system information request to the base station, including: The terminal sends a specified system information request to the base station through connection establishment request information or connection establishment recovery or other radio resource control information. A method for acquiring system information, comprising: The base station generates a system information request response according to the system information request sent by the terminal, where the system information request response includes a transmission mode information, where the transmission mode information is used to provide a transmission mode of the system information, where the transmission mode includes a unicast mode or Broadcast mode The base station sends the system information request response to the terminal. The method according to claim 13, wherein before the generating, by the base station, the system information request response according to the system information sent by the terminal, the method further includes: The base station receives a system information request sent by the terminal, where the system information request is used to indicate attribute information of the system information requested by the terminal in an explicit or implicit manner. The method of claim 14 wherein: The base station generates a system information request response according to the system information request sent by the terminal, including: The base station counts the total number of system information requests that are received within the preset duration and carries the same attribute information; When the total number of system information requests carrying the same attribute information is greater than a preset number threshold, the base station generates a system information request response, and the transmission mode indicated by the transmission mode information in the system information request response is a broadcast mode; When the total number of system information requests carrying the same attribute information is not greater than the preset number threshold, the base station generates a system information request response, and the transmission mode indicated by the transmission mode information in the system information request response is unicast the way. The method according to claim 13, wherein after the base station sends the system information request response to the terminal, the method further includes: Receiving, by the base station, a specified system information request sent by the terminal, where the specified system information request indicates system information requested by the terminal in an explicit or implicit manner, where the specified system information request is received by the terminal The transmission mode indicated by the transmission mode information in the system information request response is generated when the transmission mode is the unicast mode; The base station sends a specified system information request response to the terminal, where the specified system information request response includes system information requested by the terminal. The method according to claim 13, wherein when the transmission mode information includes an indication identifier indicating that the terminal transmits the required system information or an indication that the transmission mode of the system information is a unicast mode, the transmission mode The information represents that the transmission mode of the system information is a unicast mode; When the transmission mode information includes the resource indication information or the indication that the transmission mode of the system information is the broadcast mode, the transmission mode information represents that the transmission mode of the system information is a broadcast mode; The resource indication information is used to indicate a transmission resource occupied by the system information when it is transmitted in a broadcast manner. The method according to claim 17, wherein the transmission mode information includes the resource indication information, and after the base station sends the system information request response to the terminal, the method further includes: The base station sends a specified system information request response to the terminal at the transmission resource. The method according to claim 17, wherein the resource indication information comprises at least one of a transmission period, a physical resource block, a modulation and coding mode, and an effective transmission duration. The method according to claim 14, wherein the attribute information is a classification identifier of the system information or a characteristic identifier of the system information. A method according to any one of claims 13 to 20, characterized in that Sending, by the base station, the system information request response to the terminal, including: The base station sends feedback information of the physical random access resource to the terminal, where the feedback information includes the system information request response. A method according to any one of claims 13 to 21, wherein Receiving, by the base station, a system information request sent by the terminal, including: The base station receives a system information request sent by the terminal by using a physical random access resource. A method according to any one of claims 16 to 22, wherein Receiving, by the base station, the specified system information request sent by the terminal, including: The base station receives a specified system information request sent by the terminal through connection establishment request information or connection establishment recovery or other radio resource control information. A device for acquiring system information, comprising: a receiving module, configured to receive a system information request response sent by the base station, where the system information request response includes a transmission mode information, where the transmission mode information is used to provide a transmission mode of the system information, where the transmission mode includes a unicast mode or Broadcast mode And an acquiring module, configured to acquire system information sent by the base station according to the transmission mode information. The device according to claim 24, wherein the device further comprises: a sending module, configured to send, to the base station, a system information request, where the terminal information is used to indicate a system requested by the terminal, in an explicit or implicit manner, before the terminal receives a system information request response sent by the base station Attribute information of the information. The device according to claim 24, wherein The obtaining module includes: a sending submodule, configured to: when the transmission mode information represents that the transmission mode of the system information is a unicast mode, send a specified system information request to the base station, where the specified system information request is indicated by an explicit or implicit manner System information requested by the terminal; And a receiving submodule, configured to receive a specified system information request response sent by the base station, where the specified system information request response includes system information requested by the terminal. The device according to claim 26, wherein the transmission mode information is included when the transmission mode information includes an indication identifier of the system information required by the terminal or an indication that the transmission mode of the system information is a unicast mode. The transmission method representing the system information is a unicast mode. The device according to claim 24, wherein the obtaining module is specifically configured to: And when the transmission mode information represents that the transmission mode of the system information is a broadcast mode, and receiving system information that is sent by the base station by using a broadcast manner. The apparatus according to claim 28, wherein said transmission mode information comprises When the resource indication information or the indication mode of the system information is the identifier of the broadcast mode, the transmission mode information represents that the transmission mode of the system information is a broadcast mode; The resource indication information is used to indicate a transmission resource occupied by the system information when it is transmitted in a broadcast manner. The device according to claim 29, wherein the transmission mode information comprises the resource indication information, The acquiring module is specifically configured to: receive system information that is sent by the base station by using a broadcast manner on the transmission resource. The device according to claim 29, wherein The resource indication information includes at least one of a transmission period, a physical resource block, a modulation and coding manner, and an effective transmission duration. The apparatus according to claim 25, wherein the attribute information is a classification identifier of the system information or a characteristic identifier of the system information. A device according to any one of claims 24 to 32, wherein The receiving module is specifically configured to: Receiving feedback information of the physical random access resource sent by the base station, where the feedback information includes the system information request response. A device according to any one of claims 25 to 33, wherein The sending module is specifically configured to: A system information request is sent to the base station through a physical random access resource. Apparatus according to any one of claims 26 to 34, wherein The sending submodule is specifically configured to: The specified system information request is sent to the base station through connection establishment request information or connection establishment recovery or other radio resource control information. A device for acquiring system information, comprising: a generating module, configured to generate a system information request response according to the system information request sent by the terminal, where the system information request response includes transmission mode information, where the transmission mode information is used to provide a transmission mode of the system information, where the transmission mode includes Unicast or broadcast mode; The first sending module is configured to send the system information request response to the terminal. The device of claim 36, wherein the device further comprises: a first receiving module, configured to: before the base station generates a system information request response according to the system information request sent by the terminal, receive a system information request sent by the terminal, where the system information request is used to indicate the mode in an explicit or implicit manner. The attribute information of the system information requested by the terminal. The device according to claim 37, wherein The generating module is specifically configured to: The total number of system information requests received with the same attribute information received within the preset preset duration; When the total number of the system information requests carrying the same attribute information is greater than the preset number threshold, the system information request response is generated, and the transmission mode indicated by the transmission mode information in the system information request response is a broadcast mode; When the total number of the system information requests carrying the same attribute information is not greater than the preset number threshold, the system information request response is generated, and the transmission mode indicated by the transmission mode information in the system information request response is a unicast mode. The device of claim 36, wherein the device further comprises: a second receiving module, configured to: after the base station sends the system information request response to the terminal, receive a specified system information request sent by the terminal, where the specified system information request is indicated by an explicit or implicit manner The system information requested by the terminal, where the specified system information request is generated by the terminal when the transmission mode indicated by the transmission mode information in the received system information request response is a unicast mode; And a second sending module, configured to send a specified system information request response to the terminal, where the specified system information request response includes system information requested by the terminal. The apparatus according to claim 36, wherein said transmission mode information comprises When the indication indicating that the terminal sends the required system information or the indication that the transmission mode of the system information is the unicast mode, the transmission mode information represents that the transmission mode of the system information is a unicast mode; When the transmission mode information includes the resource indication information or the indication that the transmission mode of the system information is the broadcast mode, the transmission mode information represents that the transmission mode of the system information is a broadcast mode; The resource indication information is used to indicate a transmission resource occupied by the system information when it is transmitted in a broadcast manner. The device according to claim 40, wherein the transmission mode information comprises the resource indication information, and the device further comprises: And a third sending module, configured to send, after the base station sends the system information request response to the terminal, a specified system information request response to the terminal in the transmission resource. The apparatus according to claim 40, wherein the resource indication information comprises at least one of a transmission period, a physical resource block, a modulation and coding mode, and an effective transmission duration. The apparatus according to claim 37, wherein said attribute information is a classification identifier of said system information or a characteristic identifier of said system information. Apparatus according to any one of claims 36 to 43 wherein: The first sending module is specifically configured to: Sending feedback information of the physical random access resource to the terminal, where the feedback information includes the system information request response. A device according to any one of claims 37 to 44, wherein The first receiving module is specifically configured to: Receiving a system information request sent by the terminal through a physical random access resource. A device according to any one of claims 39 to 45, wherein The second receiving module is specifically configured to: Receiving, by the terminal, a specified system information request sent by connection establishment request information or connection establishment recovery or other radio resource control information. A system for acquiring system information, comprising: a terminal and a base station, the terminal comprising the system information acquiring apparatus according to any one of claims 24 to 35; The base station includes the apparatus for acquiring system information according to any one of claims 36 to 46.

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