METHOD, DEVICE AND SYSTEM FOR BROADCASTING SYSTEM INFORMATION

The present disclosure provides a method for broadcasting system information. The method includes: obtaining preset global system information, the global system information including pre-divided basic system information and terminal-related system information; broadcasting the basic system information on a broadcast channel; receiving a message uploaded by User Equipment (UE) through an uplink channel, and extracting a system information requirement message included in the message; determining target system information in the terminal-related system information according to an indication of the system information requirement message. By adopting the present disclosure, there is no need to send all system information to a terminal at one time, thereby occupying less capacity resources of a base station broadcast channel and improving resource utilization of the broadcast channel.

This application claims priority of Chinese Patent Application No. 201610848940.5, entitled “Method, Device and System for Broadcasting System Information,” filed on Sep. 24, 2016 in the China National Intellectual Property Administration (CNIPA), the entire contents of which are incorporated by reference herein.

FIELD

The embodiments of the present disclosure relates to a technical field of computer, specifically a method, a device, and a system for broadcasting system information.

BACKGROUND

With development of communication technologies, communication protocols are also more and more loaded. For example, in a Long Term Evolution (LTE) system in a conventional technology, system information that a base station needs to broadcast to User Equipment (UE) is very complicated, the system information includes a Main Information Block (MIB) and a plurality of System Information Blocks (SIBs). In the MIB, a downlink system bandwidth, a Physical Hybrid ARQ Indicator Channel (PHICH) resource indication, a System Frame Number (SFN), a Cyclic Redundancy Check (CRC) with a mode of mask, information of a number of antennas and other system information have been defined. In addition to the MIB, the number of the plurality of SIBs which has been defined is more than 20. In the conventional technology, broadcast of the system information needs to occupy a broadcast channel, and an adopted level of modulation and demodulation needs to satisfy coverage of centers and edges of terminals, thus capacity resources of a broadcast channel of a base station is mostly occupied, thereby causing a low resource utilization rate of the broadcast channel.

SUMMARY

Based on this, in order to solve a technical problem in traditional technology that broadcast of system information needs to occupy a broadcast channel and an insufficient resource utilization of the broadcast channel due to an adopted level of modulation and demodulation needs to meet coverage of terminals at a center and edges, a method for broadcasting system information is provided.

A method for broadcasting system information includes:

Obtaining preset global system information, the global system information including pre-divided basic system information and terminal-related system information;

Broadcasting the basic system information on a broadcast channel;

Receiving a message uploaded by User Equipment (UE) through an uplink channel, and extracting a system information requirement message included in the message;

Determining target system information in the terminal-related system information according to an indication of the system information requirement message;

Sending the target system information to the UE.

In one embodiment, receiving the message uploaded by the UE through the uplink channel includes:

Receiving the message uploaded by the UE through an uplink channel of uplink physical layer signaling, Random Access Channel (RACH) or Media Access Control (MAC) signaling; and

Sending the target system information to the UE includes:

Adding the target system information on the broadcast channel.

In one embodiment, receiving the message uploaded by the UE through the uplink channel includes:

Receiving the message uploaded by the UE through the uplink channel of uplink Radio Resource Control (RRC) signaling;

Sending the target system information to the UE includes:

Sending the target system information to the UE through a dedicated channel corresponding to the uplink RRC signaling.

In one embodiment, the system information requirement message is UE capability information or service requirement information.

In one embodiment, extracting the system information requirement message included in the messages includes:

Extracting the system information requirement message included in the messages in an explicit manner or an implicit manner.

In addition, in order to solve a technical problem in traditional technology that broadcast of system information needs to occupy a broadcast channel and an insufficient resource utilization of the broadcast channel due to an adopted level of modulation and demodulation needs to meet coverage of terminals at a center and edges, a device for broadcasting system information is provided.

A device for broadcasting system information includes:

A global system information obtaining module configured to obtain preset global system information, the global system information including pre-divided basic system information and terminal-related system information;

A basic system information broadcasting module configured to broadcast the basic system information on a broadcast channel;

A message uploaded receiving module configured to receive a message uploaded by User Equipment (UE) through an uplink channel, and extract a system information requirement message included in the message;

A target system information determination module configured to determine target system information in the terminal-related system information according to an indication of the system information requirement message;

A target system information sending module configured to send the target system information to the UE.

In one embodiment, the message uploaded receiving module is further configured to receive the message uploaded by the UE through an uplink channel of uplink physical layer signaling, Random Access Channel (RACH) or Media Access Control (MAC) signaling; and

The target system information sending module is further configured to add the target system information on the broadcast channel.

In one embodiment, the message uploaded receiving module is further configured to receive the message uploaded by the UE through the uplink channel of uplink Radio Resource Control (RRC) signaling;

The target system information sending module is further configured to send the target system information to the UE through a dedicated channel corresponding to the uplink RRC signaling.

In one embodiment, the system information requirement message is UE capability information or service requirement information.

In one embodiment, the message uploaded receiving module is further configured to extract the system information requirement message included in the messages in an explicit manner or an implicit manner.

In addition, in order to solve a technical problem in traditional technology that broadcast of system information needs to occupy a broadcast channel and an insufficient resource utilization of the broadcast channel due to an adopted level of modulation and demodulation needs to meet coverage of terminals at a center and edges, a method for receiving system information is provided.

A method for receiving system information includes:

Detecting broadcast channels of two or more than two cells;

Receiving two or more than two sets of system information through the broadcast channels, each one of the two or more than two sets of system information corresponding to a corresponding cell;

Splicing and integrating the two or more than two sets of system information into system information actively broadcast by the cell, and performing a communication service according to the system information actively broadcast by the cell.

In one embodiment, the two or more than two cells include a primary cell and a secondary cell;

Receiving the two or more than two sets of system information through the broadcast channels includes:

Receiving cell-specific system information by a broadcast channel of the primary cell in the two or more than two cells, and receiving cell-shared system information by a broadcast channel of the secondary cell in the two or more than two cells.

In one embodiment, after splicing and integrating the two or more than two sets of system information into system information actively broadcast by the cell, the method further includes:

Determining whether the system information actively broadcast by the cell meets User Equipment (UE) capability information or service requirement information, and when the system information actively broadcast by the cell does not meet the UE capability information or the service requirement information, reporting the UE capability information or the service requirement information to the primary cell in the two or more than two cells through an uplink channel;

Receiving supplemental system information sent by the primary cell according to the UE capability information or the service requirement information;

Performing the communication service according to the system information integrated by the system information actively broadcast by the cell and the supplementary system information.

In one embodiment, the primary cell is a small cell, and the secondary cell is a macro cell.

In addition, in order to solve a technical problem in traditional technology that broadcast of system information needs to occupy a broadcast channel and an insufficient resource utilization of the broadcast channel due to an adopted level of modulation and demodulation needs to meet coverage of terminals at a center and edges, a device for receiving system information is provided.

A device for receiving system information includes:

A cells detection module configured to detect broadcast channels of two or more than two cells;

A system information receiving module configured to receive two or more than two sets of system information through the broadcast channels, each one of the two or more than two sets of system information corresponding to a corresponding cell;

A system information integrating module configured to splice and integrate the two or more than two sets of system information into system information actively broadcast by the cell, and perform a communication service according to the system information actively broadcast by the cell.

In one embodiment, the two or more than two cells include a primary cell and a secondary cell;

The system information receiving module is further configured to receive cell-specific system information by a broadcast channel of the primary cell in the two or more than two cells, and receive cell-shared system information by a broadcast channel of the secondary cell in the two or more than two cells.

In one embodiment, the device further includes a supplemental information request module configured to determine whether the system information actively broadcast by the cell meets User Equipment (UE) capability information or service requirement information, and when the system information actively broadcast by the cell does not meet the UE capability information or the service requirement information, report the UE capability information or the service requirement information to the primary cell in the two or more than two cells through an uplink channel, and receive supplemental system information sent by the primary cell according to the UE capability information or the service requirement information, and perform the communication service according to the system information integrated by the system information actively broadcast by the cell and the supplementary system information.

In one embodiment, the primary cell is a small cell, and the secondary cell is a macro cell.

In addition, in order to solve a technical problem in traditional technology that broadcast of system information needs to occupy a broadcast channel and an insufficient resource utilization of the broadcast channel due to an adopted level of modulation and demodulation needs to meet coverage of terminals at a center and edges, a method for broadcasting system information is provided.

A method for broadcasting system information based on two or more than two cells, includes:

Determining respective corresponding system information by the two or more than two cells;

Sending the respective corresponding system information to User Equipment (UE) through respective broadcast channels by the two or more than two cells, to make the UE receive two or more than two sets of system information, and each set of system information corresponding to corresponding cells, and to make the UE splice and integrate the two or more than two sets of system information into system information actively broadcast by the cell, and performing a communication service according to the system information actively broadcast by the cell.

In one embodiment, the two or more than two cells include a primary cell of the UE and a secondary cell of the UE;

Sending the respective corresponding system information to the UE through the respective broadcast channels by the two or more than two cells includes:

Sending cell-specific system information to the UE through a broadcast channel by the primary cell of the UE;

Sending cell-shared system information to the UE through a broadcast channel by the secondary cell of the UE.

In an embodiment, after sending the respective corresponding system information to the UE through the respective broadcast channels by the two or more than two cells, the method further includes:

Receiving messages uploaded by the UE through an uplink channel, and extracting UE capability information or service requirement information included in the messages by the primary cell of the UE;

Determining supplemental system information according to an indication of the UE capability information or the service requirement information;

Sending the supplementary system information to the UE to make the UE perform the communication service according to the system information integrated by the system information actively broadcast by the cell and the supplementary system information.

In addition, in order to solve a technical problem in traditional technology that broadcast of system information needs to occupy a broadcast channel and an insufficient resource utilization of the broadcast channel due to an adopted level of modulation and demodulation needs to meet coverage of terminals at a center and edges, a system for broadcasting system information is provided.

A system for broadcasting system information including two or more than two cells, the two or more than two cells are configured to determine respective corresponding system information by the two or more than two cells;

The two or more than two cells are configured to send the respective corresponding system information to User Equipment (UE) through respective broadcast channels by the two or more than two cells, to make the UE receive two or more than two sets of system information, and each set of system information corresponding to corresponding cells, and to make the UE splice and integrate the two or more than two sets of system information into system information actively broadcast by the cell, and perform a communication service according to the system information actively broadcast by the cell.

In one embodiment, the two or more than two cells include a primary cell of the UE and a secondary cell of the UE;

The primary cell of the UE is configured to send cell-specific system information to the UE through a broadcast channel;

The secondary cell of the UE is configured to send cell-shared system information to the UE through a broadcast channel.

In an embodiment, the primary cell of the UE is configured to receive messages uploaded by the UE through an uplink channel, and extract UE capability information or service requirement information included in the messages, and determine supplemental system information according to an indication of the UE capability information or the service requirement information, and send the supplementary system information to the UE to make the UE perform the communication service according to the system information integrated by the system information actively broadcast by the cell and the supplementary system information.

Implementation of embodiments of the present disclosure has the following beneficial effects:

After adopting a method, a device, and a system for broadcasting system information as described above, a base station only needs to use less broadcast resources to broadcast preset basic system information. After User Equipment (UE) receives the basic system information through a broadcast channel, when the basic system information adapts capabilities of the UE or meets service requirements of the UE, a corresponding communication service may be performed. Only when the basic system information does not adapt to the capabilities of the UE or does not meet the service requirements of the UE, the base station needs to send the system information required by the UE to the UE. Thus a number of SIBs defined by a timely communication protocol is more, and less resources of the broadcast channel are consumed to send the system information to the base station, thereby improving resource utilization of the broadcast channel.

DETAILED DESCRIPTION

The following clearly and completely describes the technical solutions in the embodiments of the present disclosure with reference to the accompanying drawings in the embodiments of the present disclosure. The described embodiments are only a part rather than all of the embodiments of the present disclosure. All other embodiments acquired by persons of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.

In order to solve a technical problem in traditional technology that a broadcast of system information needs to occupy a broadcast channel and an insufficient resource utilization of the broadcast channel due to an adopted level of modulation and demodulation needs to meet coverage of terminals at a center and edges, in an embodiment, a method for broadcasting system information is provided, the method is based on a base station subsystem. In a Long Term Evolution (LTE) system, the concept of a base station is an evolved base station E-Node B (eNB).

Specifically, as shown inFIG. 1, the above method for broadcasting system information includes the following steps S102-S108.

S102, obtaining preset global system information, the global system information including pre-divided basic system information and terminal-related system information.

The system information includes a plurality of parameters, the parameters mainly includes network attribute information, timers required by User Equipment (UE), common channel information, cell selection, reselection and measurement information. The parameters determine residing, reselection, and call of the UE in a cell. The UE can reside in the cell only when the UE receives all necessary system information.

The system information can include a Main Information Block (MIB) and a plurality of System Information Blocks (SIBs), and scheduling information of the SIBs. The MIB includes a plurality of attributes, as shown in Table 1.

TABLE 1Channel_TypeIndicating a channel type occupied by signalingDirectionIndicating a signaling direction, and a direction ofdownlink signaling is 0, a direction of uplinksignaling is 1ManagementAn Mib-value tag, which is an integer between 1 andInformation8, and when the Mib-value tag is modified, value ofBase (Mib)-the Mib-value tag changesValue TagSupport PublicSupported PLMN type, and a value range of (GlobalLand MobileSystem For Mobile Communications MAP (GSM-NetworkMAP), AMERICAN NATIONAL STANDARDS(PLMN)-TypeINSTITUTE 41 (ANSI-41))PLMNService cell PLMN, which includes Mobile CountryidentityCode (MCC) and Mobile Network Code (MNC)

There are a plurality of types of the SIB according to a communication protocol. In the LTE system, a number of the SIB is defined by more than 20. For example, an SIB1mainly includes Network Attached Storage (NAS) information and related parameters of times when the UE in an idle and connected mode, and an SIB3and an SIB4mainly include parameters of cell selection and reselection. An SIB5mainly includes related parameters of a common physical channel in the cell; and an SIB6mainly includes related parameters of the common physical channel and a shared physical channel in the cell, etc.

The scheduling information of the SIB describes a location where the SIB appears, and a cycle that the SIB appears, etc. As the SIB may be segmented, the scheduling information of the SIB also includes segmentation scheduling information.

In the embodiment, the global system information includes all system information supported by the communication protocol. For example, in the LTE system, the global system information includes all defined MIBs and SIBs of the LTE system. The pre-divided basic system information is a predefined subset in the global system information, for example, the pre-divided basic system information can include an MIB and a partial SIB, and the MIB or the SIB included in the subset is necessary system information, which is predefined to be broadcast to a terminal through a broadcast channel. The terminal-related system information is predefined optional system information, and the terminal-related system information does not need to be broadcast to the terminal all at once, and can be additionally sent to the terminal according to terminal demands.

For example, when predefined global system information includes the MIB and 20 SIBs according to an LTE communication protocol, the MIB and the SIB1to an SIB9can be pre-defined as the basic system information, and remaining SIB10to SIB20are terminal-related system information.

S104, broadcasting the basic system information on a broadcast channel.

For example, in the LTE system, the basic system information can be broadcast on the broadcast channel by the eNB.

S106, receiving a message uploaded by a UE through an uplink channel, and extracting a system information requirement message included in the message.

In the embodiment, the system information requirement message can be UE capability information or service requirement information.

The UE capability information can include a radio access related capability and a core network related capability. When a network side makes various event decisions or executes various algorithms, the network side needs to know capabilities of the UE to make a most appropriate determination. For example, when the UE supports a Circuit Switched Fallback (CSFB) to initiate joint attachment, a process of executing and processing by the network side can be different. When the UE does not support a mobility of the Packet Service Handover (PS HO) inter-RAT, the network can only adopt a National Association of Career Colleges/a Cell Change Order (NACC/CCO) or Redirect to allow interoperation between the systems. The UE can send the UE capability information to the base station through UE capability information signaling. The service requirement information includes services the UE needs to implement when performing a communication service.

In the embodiment, the base station can extract the system information requirement message included in the messages in an explicit manner or an implicit manner, that is, the UE can send the UE capability information or the service requirement information to the base station by specific signaling. The base station can obtain the UE capability information or the service requirement information by parsing the signaling. The UE can also send the UE capability information or the service requirement information to the base station in other messages in the implicit manner. When the base station parses the other messages, the base station can determine corresponding UE capability information or service requirement information by a specific rule (for example, whether related information exists) in the other messages.

The base station can receive the system information requirement message uploaded by a mobile terminal through an uplink channel of uplink physical layer signaling, or Random Access Channel (RACH),or Media Access Control (MAC) signaling, or MAC after a completion of the RACH, or Radio Resource Control (PRC) signaling. The system information requirement message is a requested message for requesting missing system information, uploaded by the UE according to the UE's own requirements. The UE's own requirements include two aspects.

After entering the cell, the UE can first receive a system information broadcast, then the UE can detect whether the broadcast (that is, the basic system information sent by the base station) can adapt to the UE's capability. When the broadcast cannot adapt to the UE's capability, an indication is sent through the uplink channel. The UE capability information is carried in the indication. The base station receives the system information requirement message.

After entering the cell, the UE can first receive a system information broadcast, then the UE can detect whether the broadcast (that is, the basic system information sent by the base station) can meet a service requirement of the UE. When the broadcast cannot meet the service requirement of the UE, the service requirement is indicated on the uplink channel. The base station receives the system information requirement message.

S108, determining target system information in the terminal-related system information according to an indication of the system information requirement message.

As mentioned in an above example, the SIB5mainly includes the related parameters of the common physical channel in the cell, and the SIB6mainly includes the related parameters of the common physical channel and the shared physical channel in the cell, etc. When the service requirement of the UE needs to use the shared physical channel, and the pre-divided basic system information includes only the SIB5, and the SIB6is divided into the terminal-related system information, the UE first obtains the SIB5by receiving the basic system information broadcasted on the broadcast channel after entering the cell. As the service requirement of the shared physical channel needs to use the SIB6, the service requirement of the shared physical channel is added into the system information requirement message, and the service requirement of the shared physical channel is sent to the base station through the uplink channel. After the system information request message is received, the base station can determine that the UE needs to use the SIB6according to the service requirement of the shared physical channel included in the system information request message. The SIB6can be configured as the target system information to be sent to the UE, thus the UE can perform a service using the shared physical channel.

S110, sending the target system information to the UE.

The base station can send the target system information to the mobile terminal in two modes. The target system information can be sent to the mobile terminal by adding the target system information on the broadcast channel, or the target system information can be sent to the mobile terminal through other downlink channels.

However, it should be noted that when the mobile terminal uploads the system information request message through the uplink channel of the uplink physical layer signaling, the RACH or the MAC signaling, the base station can send the target system information to the mobile terminal by adding the target system information on the broadcast channel. When the mobile terminal receives the system information request message uploaded by the mobile terminal through an uplink channel of uplink Radio Resource Control (RRC) signaling after the completion of the RACH, the base station sends the target system information to the mobile terminal through a dedicated channel corresponding to the uplink RRC signaling.

As shown inFIG. 2,FIG. 2shows a timing sequence process that a 5th-Generation New Radio (5G NR) base station sends the system information to 5G NR UE in a 5G NR (New Radio) application scenario. The 5G NR base station broadcasts the basic system information. After the UE receives the basic system information, the UE sends the system information requirement message according to requirements. The 5G NR base station determines the target system information according to the system information requirement message, and then sends the target system information to the UE, and the UE can perform a corresponding communication service.

In another embodiment, in order to solve a technical problem in traditional technology that broadcast of system information needs to occupy a broadcast channel and an insufficient resource utilization of the broadcast channel due to an adopted level of modulation and demodulation needs to meet coverage of terminals at a center and edges, in an embodiment, a method for broadcasting system information and a corresponding method for receiving system information are further provided. The above method for broadcasting system information is based on a base station subsystem. The above method for receiving system information is based on User Equipment (UE).

Specifically, as shown inFIG. 3, the method for broadcasting system information includes:

S202, determining respective corresponding system information by the two or more than two cells.

S204, sending the respective corresponding system information to a UE through respective broadcast channels by the two or more than two cells, to make the UE receive two or more than two sets of system information, and each set of system information corresponding to corresponding cells, and to make the UE splice and integrate the two or more than two sets of system information into system information actively broadcast by the cell, and performing a communication service according to the system information actively broadcast by the cell.

In an application scenario, as shown inFIG. 4andFIG. 5, the UE is simultaneously covered by two cells, and the broadcast channels of the two cells can be simultaneously received. InFIG. 4, a coverage of a cell B is a subset of a coverage of a cell A, and the UE is in the coverage of the cell B. InFIG. 5, there is an intersection between the coverage of the cell B and the coverage of the cell A, and the UE is in the coverage of the intersection. A respective base station of the two cells can divide the system information actively broadcast by the cells into two parts after negotiation, and the system information needs to be sent to the UE. One part is sent to the UE through the broadcast channel of the cell A, and the other part is sent to the UE through the broadcast channel of the cell B. After receiving a part of the system information sent by a base station of the cell A and another part of the system information sent by a base station of the cell B, the UE can integrate or splicing the two parts to obtain a completed system information actively broadcast by the cell. Then the UE performs the communication service according to the system information actively broadcast by the cell.

For example, when the system information actively broadcast by the cell includes the MIB and the SIB1to the SIB9, after the negotiation, the base station of the cell A broadcasts a part of system information including the MIB and the SIB1to the SIB3, and the base station of the cell B broadcasts a part of system information including the SIB4to the SIB9. The UE can receive the part of system information including the MIB and the SIB1to the SIB3through the broadcast channel of the base station of the cell A, and the UE can receive the part of system information including the SIB4to the SIB9through the broadcast channel of the base station of the cell B. The two parts are integrated to obtain completed system information actively broadcast by the cell of the MIB and the SIB1to the SIB9.

In other embodiment, as shown inFIG. 6, two or more N cells can negotiate, and the system information actively broadcast by the cell is divided into N parts, and the system information actively broadcast by the cell is broadcast separately. After receiving the N parts of the system information through the broadcast from each of the N cells, the base station integrates the system information. Then the completed system information actively broadcast by the cell is obtained.

Moreover, the two or more than two cells include a primary cell and a secondary cell. In one example as described above, the cell B can be the primary cell of a UE1, and the cell A can be the secondary cell of the UE1, and a cell C can be the primary cell of a UE2within its coverage.

Referring to theFIG. 4again, for the UE1, the secondary cell of the UE1, that is, the cell A inFIG. 4, which can send cell-shared system information (that is, the system information of the cell common) to the UE1through the broadcast channel. The primary cell of the UE1, that is, the cell B inFIG. 4, which can send cell-specific system information (that is, the cell-specific system information) to the UE1through the broadcast channel.

Similarly, for the UE2, the secondary cell of the UE2, that is, the cell A inFIG. 4, which can send cell-shared system information (that is, the system information of the cell common) to the UE2through the broadcast channel. The primary cell of the UE2, that is, the cell C inFIG. 4, which can send cell-specific system information (that is, the cell-specific system information) to the UE2through the broadcast channel.

The cell-shared system information is the system information used by a plurality of cells. For example, after the cell A negotiates with the cell B, the system information actively sent by the cell is set as the MIB and the SIB1to the SIB6. After the cell A negotiates with the cell C, the system information actively sent by the cell is set as the MIB and the SIB4to the SIB9. Then the cell-shared system information can be determined as the MIB and the SIB5in advance. Then the cell A broadcast the system information of the MIB and the SIB1to the SIB4. As the UE1and the UE2are both in the coverage of the cell A, and the cell A is the secondary cell of the UE1and the UE2, both the UE1and the UE2can receive the system information of the cell common of the MIB and the SIB5.

For the cell B, the cell-specific system information after the negotiation is the system information of the SIB1to the SIB4and the SIB6, and the system information of the SIB1to the SIB4and the SIB6can be broadcasted by the base station corresponding to the cell B. As the UE1is in the coverage of the cell B, the cell-specific system information of the SIB1to the SIB4and the SIB6can be received. By integrating the system information of the cell common of the MIB and the SIB5and the system information of the cell specific of the SIB1to the SIB4and the SIB6, the UE1can completely obtain the system information of the MIB and the SIB1to the SIB6.

Similarly, for the cell C, the cell-specific system information after the negotiation with the cell A is the system information of the SIB6to the SIB9and the SIB4, and the system information of the SIB6to the SIB9and the SIB4can be broadcasted by the base station corresponding to the cell C. As the UE2is in the coverage of the cell C, the cell-specific system information of the SIB6to the SIB9and the SIB4can be received. By integrating the system information of the cell common of the MIB and the SIB5and the system information of the cell specific of the SIB6to the SIB9and the SIB4, the UE2can completely obtain the system information of the MIB and the SIB4to the SIB9.

Optionally, as shown inFIG. 4, the primary cell can be a small cell, and the secondary cell can be a macro cell. The macro cell is a most commonly used cell design form. A traditional cellular network is composed of macro cells, and a coverage radius of each cell is mostly 1 km to 25 km. Due to a large coverage radius, the base station has a strong transmitting power, the transmitting power being generally above 10 W.

The small cell is a microcell, which is a technology developed on a basis of the macro cell. The coverage radius of the small cell is about 30 m to 300 m. The transmitting power of the small cell is small, which is generally below 1 W. The base station antenna is in a relatively low place, such as below a roof, and the base station antenna is 5 m to 10 m above the ground. A propagation is mainly along a line of sight of a street, and leak of a signal at a top of a building is small. Therefore, microcells were originally used to increase radio coverage and to eliminate ‘blind spots’ in the microcells. At the same time, as a micro-cell base station with low transmitting power allows a small frequency multiplexing distance, and a number of channels in per unit area is large, a service density is greatly increased, and a Radio Frequency (RF) interference is low. The small cell is placed in the macro cell on a ‘hot spot’ to meet requirements of both a quality and a capacity of a micro area.

In addition, after the two or more than two cells send the corresponding system information to the UE through the respective broadcast channels, when the system information that the UE actively send through the integrated cell does not fully satisfy the UE capability or the service requirement, the UE capability or the service requirement can be sent through the uplink channel of the primary cell. It should be noted that the manner in which the two or more than two cells send the corresponding system information to the UE is not limited to being sent through the broadcast channel, the two or more than two cells can also send the corresponding system information to the UE through dedicated signaling described in other standards.

The primary cell can receive the message sent by the UE through the uplink channel, and extract the UE capability information or the service requirement information included in the message, and determine supplemental system information according to the indication of the UE capability information or the service requirement information, and send the supplementary system information to the UE to make the UE perform the communication service according to the system information integrated by the system information actively broadcast by the cell and the supplementary system information.

As in the above example, when the system information received by the UE1is the system information of the cell common of the MIB and the SIB5, and the system information of the cell specific of the SIB1to the SIB4and the SIB6. The received system information actively broadcast by the cell is the MIB and the SIB1to the SIB6. The UE1further needs the system information of an SIB12according to the UE capability or the service requirement. Then the UE1can send the UE capability information or the service requirement information (which can be explicitly included or implicitly included) to the cell B through the uplink channel of the cell B. After receiving the system information requirement message, the base station of the cell B can determine the system information of the SIB12as the supplementary system information. Then the SIB12is transmitted to the UE1through the broadcast or other downlink channel, and the UE1can perform corresponding communication service.

In this process, correspondingly, UE also performs a method for receiving system information corresponding to the method for broadcasting the system information, as shown inFIG. 7, the method for receiving system information specifically includes:

S302, detecting broadcast channels of two or more than two cells.

S304, receiving two or more than two sets of system information through the broadcast channels, each one of the two or more than two sets of system information corresponding to a corresponding cell.

S306, splicing and integrating the two or more than two sets of system information into system information actively broadcast by the cell, and performing a communication service according to the system information actively broadcast by the cell.

Correspondingly, the UE can receive the cell-specific system information through the broadcast channel of the primary cell in the two or more than two cells, and the UE can receive the cell-shared system information through the broadcast channel of the secondary cell in the two or more than two cells.

After splicing and integrating the two or more than two sets of system information into system information actively broadcast by the cell, the UE can also determine whether the system information actively broadcast by the cell meets the UE capability information or the service requirement information, and when the system information actively broadcast by the cell does not meet the UE capability information or the service requirement information, reporting the UE capability information or the service requirement information to the primary cell in the two or more than two cells through the uplink channel. Receiving the supplemental system information sent by the primary cell according to the UE capability information or the service requirement information. Performing the communication service according to the system information integrated by the system information actively broadcast by the cell and the supplementary system information.

In addition, in order to solve a technical problem in traditional technology that broadcast of system information needs to occupy a broadcast channel and an insufficient resource utilization of the broadcast channel due to an adopted level of modulation and demodulation needs to meet coverage of terminals at a center and edges, in one embodiment, as shown inFIG. 8, a device for broadcasting system information is provided, which includes a global system information obtaining module102, a basic system information broadcasting module104, a message uploaded receiving module106, a target system information determination module106, and a target system information sending module110.

The global system information obtaining module102configured to obtain preset global system information, the global system information including pre-divided basic system information and terminal-related system information.

The basic system information broadcasting module104configured to broadcast the basic system information on a broadcast channel.

The message uploaded receiving module configured106to receive a message uploaded by User Equipment (UE) through an uplink channel, and extract a system information requirement message included in the message.

The target system information determination module108configured to determine target system information in the terminal-related system information according to an indication of the system information requirement message.

The target system information sending module110configured to send the target system information to the UE.

In one embodiment, the message uploaded receiving module106is further configured to receive the message uploaded by the UE through an uplink channel of uplink physical layer signaling, Random Access Channel (RACH) or Media Access Control (MAC) signaling. The target system information sending module110is further configured to add the target system information on the broadcast channel.

In one embodiment, the message uploaded receiving module106is further configured to receive the message uploaded by the UE through the uplink channel of uplink Radio Resource Control (RRC) signaling. The target system information sending module110is further configured to send the target system information to the UE through a dedicated channel corresponding to the uplink RRC signaling.

In one embodiment, the system information requirement message is UE capability information or service requirement information.

In one embodiment, the message uploaded receiving module106is further configured to extract the system information requirement message included in the messages in an explicit manner or an implicit manner.

In addition, in order to solve a technical problem in traditional technology that broadcast of system information needs to occupy a broadcast channel and an insufficient resource utilization of the broadcast channel due to an adopted level of modulation and demodulation needs to meet coverage of terminals at a center and edges, in one embodiment, as shown inFIG. 9, a device for receiving system information, which includes a cells detection module302, a system information receiving module304and a system information integrating module306.

A cells detection module302configured to detect broadcast channels of two or more than two cells.

A system information receiving module304configured to receive two or more than two sets of system information through the broadcast channels, each one of the two or more than two sets of system information corresponding to a corresponding cell.

A system information integrating module306configured to splice and integrate the two or more than two sets of system information into system information actively broadcast by the cell, and perform a communication service according to the system information actively broadcast by the cell.

In one embodiment, the two or more than two cells include a primary cell and a secondary cell.

The system information receiving module306is further configured to receive cell-specific system information by a broadcast channel of the primary cell in the two or more than two cells, and receive cell-shared system information by a broadcast channel of the secondary cell in the two or more than two cells.

In one embodiment, as shown inFIG. 9, the device further includes a supplemental information request module308, which is configured to determine whether the system information actively broadcast by the cell meets User Equipment (UE) capability information or service requirement information, and when the system information actively broadcast by the cell does not meet the UE capability information or the service requirement information, report the UE capability information or the service requirement information to the primary cell in the two or more than two cells through an uplink channel, and receive supplemental system information sent by the primary cell according to the UE capability information or the service requirement information, and perform the communication service according to the system information integrated by the system information actively broadcast by the cell and the supplementary system information.

As shown inFIG. 10, a base station is further provided in an embodiment of the present disclosure. A base station400includes a processor401, a memory402and a transceiver403. The transceiver403is used to send and receive data from external devices. A number of the processor401of the base station400maybe one or more than one. In some embodiments of the present disclosure, the processor401, the memory402and the transceiver403can be connected through a bus system or in other ways. The base station400can be used to execute the method shown inFIG. 1and inFIG. 3.

The memory402stores program codes. The processor401can invoke the program codes stored in the memory402to execute the following operations through a bus system. For example, respective modules described inFIG. 8(for example, a global system information obtaining module102, a basic system information broadcasting module104, a message uploaded receiving module106, a target system information determination module106, and a target system information sending module110, etc.) are the program codes stored in the memory402and executed by the processor401to implement the functions of the respective modules to implement a method for broadcasting system information.

Specifically, the processor401executes the following operations: obtaining preset global system information, the global system information including pre-divided basic system information and terminal-related system information; broadcasting the basic system information on a broadcast channel; receiving a message uploaded by User Equipment (UE) through an uplink channel, and extracting a system information requirement message included in the message; determining target system information in the terminal-related system information according to an indication of the system information requirement message.

The processor401further executes the following operations: detecting broadcast channels of two or more than two cells; splicing and integrating the two or more than two sets of system information into system information actively broadcast by the cell, and performing a communication service according to the system information actively broadcast by the cell.

As shown inFIG. 11, a terminal is further provided in an embodiment of the present disclosure. A terminal500includes a processor501, a memory502and a transceiver503. The transceiver503is used to send and receive data from external devices. A number of the processor501of the terminal500maybe one or more than one. In some embodiments of the present disclosure, the processor501, the memory502and the transceiver503can be connected through a bus system or in other ways. The terminal500can be used to execute the method shown inFIG. 7.

The memory502stores program codes. The processor501can invoke the program codes stored in the memory502to execute the following operations through a bus system. For example, respective modules described inFIG. 9(for example, a cells detection module302, a system information receiving module304, a system information integrating module306, and a supplemental information request module308, etc.) are the program codes stored in the memory502and executed by the processor501to implement the functions of the respective modules to implement a method for receiving system information.

Specifically, the processor501executes the following operations: detecting broadcast channels of two or more than two cells; receiving two or more than two sets of system information through the broadcast channels, each one of the two or more than two sets of system information corresponding to a corresponding cell; splicing and integrating the two or more than two sets of system information into system information actively broadcast by the cell, and performing a communication service according to the system information actively broadcast by the cell.

Implementation of embodiments of the present disclosure has the following beneficial effects:

After adopting a method, a device, and a system for broadcasting system information as described above, a base station only needs to use less broadcast resources to broadcast preset basic system information. After User Equipment (UE) receives the basic system information through a broadcast channel, when the basic system information adapts capabilities of the UE or meets service requirements of the UE, a corresponding communication service may be performed. Only when the basic system information does not adapt to the capabilities of the UE or does not meet the service requirements of the UE, the base station needs to send the system information required by the UE to the UE. Thus a number of SIBs defined by a timely communication protocol is more, and less resources of the broadcast channel are consumed to send the system information to the base station, thereby improving resource utilization of the broadcast channel.

The above mentioned descriptions are merely preferred embodiments of the present disclosure, and certainly, should not limit the scope of the present disclosure. Thus, any modification and equivalent according to the claims of the present disclosure, should be still within the scope of the present disclosure.