WO2017084485A1

WO2017084485A1 - System broadcast message transmission method and apparatus

Info

Publication number: WO2017084485A1
Application number: PCT/CN2016/103817
Authority: WO
Inventors: 刘星; 刘文豪; 毕峰
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-11-20
Filing date: 2016-10-28
Publication date: 2017-05-26
Also published as: CN106792564B; CN106792564A

Abstract

Disclosed are a system broadcast message transmission method and apparatus, which are applied to a first-type station. The method comprises: determining whether to perform system broadcast message distribution transmission with a second-type station; and after determining to perform system broadcast message distribution transmission with the second-type station, sending a first-type system broadcast message to the second-type station, wherein the first-type station adopts an antenna having a beam feature to transmit a beam; the second-type station performs transmission using a beam with a greater width than a beam of the first-type station, or by means of a sector, or by means of quasi omni-direction or omni-direction; the coverage range of a cell subordinated to the second-type station overlaps with the coverage range of a cell subordinated to the first-type station; and the first-type system broadcast message carries cell-level public system information about the cell subordinated to the first-type station. The present invention can reduce the overhead of a system broadcast message of a high-frequency communication system and improve the coverage performance.

Description

Method and device for transmitting system broadcast message

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting a system broadcast message.

Background technique

With the continuous advancement of radio technology, a variety of radio services have emerged, and the spectrum resources supported by the radio service are limited. In the face of increasing demand for bandwidth, the traditional commercial communication mainly uses 300MHz-3GHz. The spectrum resources are extremely tight and cannot meet the needs of future wireless communications.

In future wireless communications, communication will be carried out using a carrier frequency higher than that of the fourth-generation (4G) communication system, such as 28 GHz, 45 GHz, etc., which has a large free propagation loss. It is easy to be absorbed by oxygen and affected by rain attenuation, which seriously affects the coverage performance of high-frequency communication systems. In order to ensure the high-frequency communication and LTE system coverage, there is an approximate signal-to-interference plus noise ratio (Signal to Interference plus Noise). Ratio, referred to as SINR, requires antenna gain to ensure high frequency communication. Fortunately, since the carrier frequency corresponding to high-frequency communication has a shorter wavelength, it can ensure that more antenna elements can be accommodated per unit area, and more antenna elements mean that beamforming can be used to improve Antenna gain to ensure high-frequency communication coverage.

After the beamforming method, the transmitting end can concentrate the transmitting energy in a certain direction, and the energy is small or absent in other directions, that is, each beam has its own directivity, and each beam can only cover To a terminal in a certain direction, the transmitting end, that is, the base station needs to transmit multiple beams to complete the full coverage. Typically, the number of beams is in the tens or even hundreds. considering Equipment cost, high-frequency station transmission capability will be limited, it is difficult to achieve simultaneous transmission of omnidirectional multi-beam; in addition, from the perspective of interference, omnidirectional multi-beam simultaneous transmission is also difficult to avoid interference between adjacent beams. Therefore, each beam is likely to be time-divisionally transmitted, or packet time-division (that is, the beam is divided into several groups, and the same group of beams are simultaneously transmitted); for each beam direction, each beam can only occupy the system for the above-mentioned time-division transmission mode. In order to maintain the same level of access delay as the existing LTE terminal, the "relative overhead" of the system broadcast message is actually increased; on the other hand, based on the LTE system broadcast message period. In order to meet the access requirements of terminals in all directions, it is necessary to achieve omnidirectional coverage of system broadcast messages. The communication station needs to repeatedly transmit the same system broadcast message in each beam direction. For the communication station, the same is true. There is a problem that the "absolute overhead" of the system broadcast message becomes large.

In the related art, it is mentioned that the beam of the high frequency station is divided into two levels, one level is a "wide beam", which is used for providing a system broadcast message to a subordinate terminal, and the other level is a "narrow beam" for data communication, but Due to the limitation of high-band transmission characteristics, communication through narrow beams is to compensate for path loss and attenuation by using high antenna gain. Compared with narrow beams, wide beam means lower antenna gain, and wide beam is not necessarily The quality of the transmission can be guaranteed, especially for transmitting relatively important system broadcast messages. If the coverage of edge users cannot be guaranteed, the overall performance of the network will be greatly affected. In order to balance the coverage performance, the width of the beam will be greatly limited, and even if this solution is applied, the cost reduction is very limited. Therefore, this method does not completely solve the problem that the system broadcast message overhead is too large and the communication efficiency is low.

Summary of the invention

The technical problem to be solved by the embodiments of the present invention is to provide a method and device for transmitting a system broadcast message, which can reduce the overhead of system broadcast messages of the high frequency communication system and improve coverage performance.

An embodiment of the present invention provides a method for transmitting a system broadcast message, which is applied to a first type of site, and the method includes:

Determining whether to perform system broadcast message offload transmission with the second type of site;

After determining to perform system broadcast message offload transmission with the second type of site, sending a first type of system broadcast message to the second type of site;

Wherein the first type of station uses an antenna transmitting beam having a beam characteristic; the second type of station uses a beam having a wider beam width than the first type of station to transmit, or uses a sector to transmit, or adopts a quasi The omnidirectional or omnidirectional transmission; the coverage of the subordinate cell of the second type of site overlaps with the coverage of the subordinate cell of the first type of site; the first type of system broadcast message carries the first type of site Cell-level public system information of subordinate cells.

In the embodiment of the present invention, the method further includes:

Transmitting, according to a beam direction corresponding to the user terminal, a second type of system broadcast message corresponding to the beam;

The second type of system broadcast message carries public system information related to the beam;

The common system information related to the beam includes at least one of the following information: beam tracking related information, common channel configuration information, and dedicated channel configuration information.

In the embodiment of the present invention, determining whether to perform system broadcast message offload transmission with the second type of site includes determining by using any one of the following manners:

Receiving configuration information of the high-level node, where the configuration information indicates that the system broadcast message of the cell of the first-type site is sent by the second-type site;

Receiving a request message for offloading the system broadcast message of the cell of the first type of site to the second type of site;

Sending, to the second type of station, a request message for performing a offload transmission on the system broadcast message of the cell of the first type of site, and receiving a system that is returned by the second type of site to support sending the cell of the first type of site The response message for the broadcast message.

In the embodiment of the present invention, the method further includes:

Sending, by the first type of station, sending configuration information of a first type of system broadcast message to the second type of station;

The sending configuration information includes at least one of the following information: a sending mode indication information, a time-frequency resource, a sending period, a sending number, an update period, a coded modulation mode, and a scrambling code information of the first type of system broadcast message.

In the embodiment of the present invention, the method further includes:

Sending a synchronization signal in a subordinate cell of the site, where the synchronization signal is used for synchronizing the user terminal with the site;

The synchronization signal is further configured to indicate to the user terminal at least one of the following information:

Whether the first type of site performs offloading transmission of system broadcast messages with the second type of site;

The cell identifier of the subordinate cell of the first type of site;

a downlink transmission beam of a first type of station to which the synchronization signal belongs;

An identifier of a subordinate cell of the second type of site that performs offloading of the system broadcast message with the first type of station;

A frequency point of a subordinate cell of the second type of station that performs offloading of the system broadcast message with the first type of station.

In the embodiment of the present invention, the first type of system broadcast message includes at least one of the following information: an identifier, a system bandwidth, and a cell of a subordinate cell of the first type of site corresponding to the first type of system broadcast message. Selection information, access configuration information, common channel configuration information, dedicated channel configuration information, cell reselection related information, and early warning information.

In the embodiment of the present invention, the sending a first type of system broadcast message to the second type of station Points, including:

Transmitting the first type of system broadcast message to the second type of site by using a direct interface with the second type of site, or forwarding the first type of system broadcast message to the second type by a core network side entity Site.

The embodiment of the invention further provides a method for transmitting a system broadcast message, which is applied to a second type of site, and the method includes:

Determining whether to perform system broadcast message offload transmission with the first type of site;

Receiving, after determining that the system broadcast message is offloaded with the first type of station, receiving the first type of system broadcast message;

After receiving the first type of system broadcast message, the first type of system broadcast message is broadcasted in a subordinate cell of the site;

In the embodiment of the present invention, determining whether to perform system broadcast message offload transmission with the first type of site includes determining by using any one of the following manners:

After receiving the request message that the first type of station performs the offload transmission on the system broadcast message of the cell of the first type of site, determining that the site has the capability of transmitting the system broadcast message of the cell of the subordinate cell of the first type of site;

The request message for performing offload transmission of the system broadcast message of the cell of the first type of site is sent to the first type of site.

In the embodiment of the present invention, the receiving the first type of system broadcast message includes: receiving, by using a direct interface with the first type of site, the first type of system broadcast message, or receiving, by the core network side entity, the The first type of system broadcasts messages.

In the embodiment of the present invention, the method further includes:

Obtaining transmission configuration information of the first type of system broadcast message;

The obtaining configuration information of the broadcast message of the first type of system includes obtaining, by using any one of the following methods:

Sending configuration information according to a predefined type of system broadcast message predefined by the system;

Receiving, by the first type of station, sending configuration information of the first type of system broadcast message;

The transmission configuration information of the first type of system broadcast message is determined autonomously.

In the embodiment of the present invention, the sending configuration information of the first type of system broadcast message includes at least one of the following information: a sending mode indication information, a time-frequency resource, a sending period, and a sending number of the first type of system broadcast message. , update cycle, code modulation mode, scrambling code information.

In the embodiment of the present invention, the broadcasting, in the subordinate cell of the local station, the first type of system broadcast message, including:

Sending configuration information according to the first type of system broadcast message in a subordinate cell of the site The first type of system broadcast message is broadcasted.

In the embodiment of the present invention, the transmitting, according to the sending configuration information of the first type of system broadcast message, the first type of system broadcast message is broadcasted in a subordinate cell of the local station, including at least one of the following manners. Sending the first type of system broadcast message:

Transmitting, by the system pre-defined or the coded modulation mode indicated by the first type of station, the first type of system broadcast message on a time-frequency resource indicated by the system or the first type of station;

The first type system broadcast message is loaded on the data transmission resource of the second type site by using a system pre-defined or the code modulation mode indicated by the first type of station, and the scheduling indication information is sent to the terminal through the control channel. The scheduling indication information is used to indicate a specific time-frequency domain location of the first type of system broadcast message, and is scrambled by the specified scrambling code sequence;

Autonomously determining a transmission configuration of the first type of system broadcast message, and indicating the sending configuration to the user terminal by using a control channel or a dedicated radio resource control RRC signaling; wherein the control channel is used to indicate the sending configuration The scheduling indication information is scrambled with the specified scrambling code sequence;

When receiving the first type of system broadcast message request sent by the user terminal, the response message is returned, and the sending configuration information of the first type of system broadcast message is carried in the response message.

In the embodiment of the present invention, the time domain resource of the first type of system broadcast message predefined by the system includes: a system pre-defines a time domain resource for sending the first class system broadcast message, and the first class a timing relationship between the station or the second type of station synchronization signals; or a time domain resource that sends the first type of system broadcast message and the first type of station subordinate cell to which the first type of system broadcast message belongs Relationship between the logos;

The frequency domain resource of the first type of system broadcast message, which is predefined by the system, includes: the system pre-defines the frequency domain resource that sends the first type system broadcast message, and the The relationship between the cell identifiers of the first type of sites.

The embodiment of the invention further provides a method for transmitting a system broadcast message, which is applied to a user terminal, and the method includes:

Obtaining information about whether the system broadcast message is offloaded between the first type of site and the second type of site;

After determining that the system broadcast message is offloaded between the first type of station and the second type of station, receiving a first type of system broadcast message sent by the second type of station;

In the embodiment of the present invention, the method further includes:

Receiving a second type of system broadcast message sent by the first type of site;

The second type of system broadcast message carries public system information related to the beam.

In the embodiment of the present invention, the information about whether to perform system broadcast message offload transmission between the first type of site and the second type of site includes:

Receiving a synchronization signal sent by the first type of station, and determining, according to the indication information carried in the synchronization signal, whether to perform system broadcast message offload transmission between the first type of station and the second type of station;

The cell identifier of the subordinate cell of the first type of site;

In the embodiment of the present invention, the receiving the first type of system broadcast message sent by the second type of station includes:

Searching for and accessing the subordinate cell of the second type of site according to the acquired frequency and identifier of the subordinate cell of the second type of site, and receiving the first type of system broadcast sent by the second type of site after the access is successful Message.

And acquiring, by the sending configuration information, the first type of system broadcast message sent by the second type of station according to the sending configuration information.

In the embodiment of the present invention, the acquiring the configuration information of the broadcast message of the first type of system includes acquiring, by using any one of the following manners:

Determining, according to the system predefined, the sending configuration information of the first type of system broadcast message;

Des scrambling the scheduling indication information sent by the second type of station in the control channel by using a scrambling code sequence corresponding to the subordinate cell identifier of the first type of station, and acquiring the first type of system broadcast cancellation Send configuration information;

Receiving the second type of site control channel or the dedicated radio resource control RRC signaling, and acquiring the transmission configuration information, where the scheduling indication information for indicating the sending configuration in the control channel is scrambled by using the specified scrambling code sequence ;

Sending the first type of system broadcast message request information to the second type of site, receiving a response message replied by the second type of site, and acquiring, by using the response message, the sending configuration of the first type of system broadcast message The information of the first type of system broadcast message request information includes the identifier of the cell of the first type of site to which the first type of system broadcast message to be requested by the user terminal belongs.

In the embodiment of the present invention, the receiving the second type of system broadcast message sent by the first type of station includes:

Determining, according to the received first-class system broadcast message, that the cell of the first-type site is suitable for selection, and after accessing the cell that is suitable for selection, receiving the first-type site to be transmitted in a beam direction where the user terminal is located The second type of system broadcasts messages.

An embodiment of the present invention further provides a system for transmitting a broadcast message of a system, which is applied to a first type of site, including:

An analysis module, configured to determine whether to perform system broadcast message offload transmission with the second type of site;

a first sending module, configured to send a first type of system broadcast message to the second type of site after determining to perform a system broadcast message offload transmission with the second type of site;

In the embodiment of the present invention, the device further includes:

a second sending module, configured to send a second type of system broadcast message corresponding to the beam in a beam direction corresponding to the user terminal;

In the embodiment of the present invention, the analyzing module is configured to determine whether to perform system broadcast message offload transmission with the second type of site, including determining by using any one of the modes:

In the embodiment of the present invention, the device further includes:

a third sending module, configured to send, to the second type of station, sending configuration information of a first type of system broadcast message;

In the embodiment of the present invention, the device further includes:

a fourth sending module, configured to send a synchronization signal in a subordinate cell of the local station, where the synchronization signal is used for synchronizing the user terminal with the local station;

The cell identifier of the subordinate cell of the first type of site;

In the embodiment of the present invention, the first sending module is configured to send the first type of system broadcast message to the second type of site, including:

Transmitting the first type of system broadcast message to the second type of site by using a direct interface with the second type of site, or forwarding the first type of system broadcast message to the core network side entity to The second type of site.

An embodiment of the present invention further provides a system for transmitting a broadcast message of a system, which is applied to a second type of site, including:

a determining module, configured to determine whether to perform system broadcast message offload transmission with the first type of site;

The receiving module is configured to receive the first type of system broadcast message after determining to perform offloading of the system broadcast message with the first type of station;

a sending module, configured to broadcast the first type of system broadcast message in a subordinate cell of the local station after receiving the first type of system broadcast message;

In the embodiment of the present invention, the determining module is configured to determine whether to perform system broadcast message offload transmission with the first type of site, including determining by using any one of the following manners:

In the embodiment of the present invention, the receiving module is configured to receive the first type of system broadcast message, including: receiving the first type system broadcast message through a direct interface with the first type of site, or through a core network The side entity receives the first type of system broadcast message.

In the embodiment of the present invention, the determining module is further configured to acquire sending configuration information of the first type system broadcast message;

The determining module acquires the sending configuration information of the broadcast message of the first type of system, including acquiring by using any one of the following methods:

In the embodiment of the present invention, the sending module is configured to broadcast and send the first type of system broadcast message in a subordinate cell of the local station, including:

And transmitting, according to the sending configuration information of the first type of system broadcast message, the first type of system broadcast message in a subordinate cell of the local station.

In the embodiment of the present invention, the sending module is configured to broadcast and transmit the first type of system broadcast in a subordinate cell of the local station according to the sending configuration information of the first type of system broadcast message. The message includes transmitting the first type of system broadcast message by using at least one of the following manners:

Autonomously determining a transmission configuration of the first type of system broadcast message, and indicating the transmission configuration to a user terminal by using a control channel or a dedicated radio resource control RRC signaling, where the control channel is used to indicate the sending configuration The scheduling indication information is scrambled with the specified scrambling code sequence;

The embodiment of the invention further provides a system for transmitting a broadcast message of a system, which is applied to a user terminal, and includes:

An information acquisition module, configured to obtain a relationship between the first type of site and the second type of site Information broadcasted by the broadcast message;

The first receiving module is configured to receive the first type of system broadcast message sent by the second type of station after determining that the system broadcast message is offloaded between the first type of station and the second type of station;

In the embodiment of the present invention, the device further includes:

a second receiving module, configured to receive a second type of system broadcast message sent by the first type of station;

In the embodiment of the present invention, the information acquiring module is configured to obtain information about whether the system broadcast message is distributed and transmitted between the first type of site and the second type of site, including:

The cell identifier of the subordinate cell of the first type of site;

The second type of subordinates that perform system offloading of the system broadcast message with the first type of site is small Area identification;

In the embodiment of the present invention, the first receiving module is configured to receive the first type of system broadcast message sent by the second type of site, including:

In the embodiment of the present invention, the first receiving module is configured to acquire the sending configuration information of the broadcast message of the first type of system, including acquiring by using any one of the following manners:

Des scrambling the scheduling indication information sent by the second type of station in the control channel by using the scrambling code sequence corresponding to the subordinate cell identifier of the first type of station, and acquiring the sending configuration information of the first type system broadcast message;

Receiving the second type of station control channel or dedicated radio resource control (Radio Resource Control, abbreviated as RRC) signaling, from which the configuration information is obtained, where the scheduling indication information used to indicate the sending configuration is scrambled with the specified scrambling code sequence;

In the embodiment of the present invention, the second receiving module is configured to receive the second type of system broadcast message sent by the first type of station, including:

According to still another embodiment of the present invention, a storage medium is also provided. The storage medium is configured to store program code for performing the steps of: determining whether to perform a system broadcast message offload transmission with the second type of site; after determining to perform a system broadcast message offload transmission with the second type of site, Transmitting a first type of system broadcast message to the second type of site; wherein the first type of station uses an antenna transmit beam having a beam characteristic; the second type of site adopts a beamwidth greater than the first type of station a wide beam is transmitted, or is transmitted in a sector manner, or is transmitted in a quasi-omnidirectional or omnidirectional manner; the coverage of the subordinate cell of the second type of station overlaps with the coverage of the subordinate cell of the first type of station The first type of system broadcast message carries cell-level public system information of a cell of the first type of site.

According to still another embodiment of the present invention, a storage medium is also provided. The storage medium is configured to store program code for performing the steps of: determining whether to perform a system broadcast message offload transmission with the first type of site; after determining to perform a system broadcast message offload transmission with the first type of site, Receiving the first type of system broadcast message; after receiving the first type of system broadcast message, broadcasting the first type of system broadcast message in a subordinate cell of the site; wherein the first type of station adopts a beam a characteristic antenna transmit beam; the second type of station transmits using a beam having a wider beamwidth than the first type of station, or transmits in a sectoral manner, or in a quasi-omnidirectional or omnidirectional manner; The coverage of the subordinate cell of the second type of site overlaps with the coverage of the subordinate cell of the first type of site; the first type of system broadcast message carries the cell level common system information of the subordinate cell of the first type of site.

Compared with the prior art, the present invention provides a system broadcast message transmission method and apparatus. The system broadcast message is divided into two categories. The first type of system broadcast message is a cell-level system broadcast message, and the first type of directional transmission mode. The second type of station sent by the station to the omnidirectional transmission mode is sent to the terminal by the second type of station, and the second type of system broadcast message is a beam level system broadcast message, which is sent by the first type of station to the terminal, and the present invention The transmission method of the system broadcast message avoids the problem of excessive signaling overhead caused by repeated transmission of the full broadcast of the system broadcast message on the premise of ensuring the reception performance of the system broadcast message.

DRAWINGS

Figure 1 is a schematic diagram of a communication system of the present invention;

2 is a schematic diagram of information interaction of a method for transmitting a system broadcast message according to the present invention;

FIG. 3 is a flowchart of a method for transmitting a system broadcast message according to an embodiment of the present invention (a first type of site);

4 is a flowchart of a method for transmitting a system broadcast message according to an embodiment of the present invention (a second type of site);

FIG. 5 is a flowchart (terminal) of a method for transmitting a system broadcast message according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a system for transmitting a broadcast message of a system according to an embodiment of the present invention (a first type of site);

FIG. 7 is a schematic diagram of a system for transmitting a broadcast message of a system according to an embodiment of the present invention (a second type of site);

FIG. 8 is a schematic diagram (terminal) of a system for transmitting a broadcast message of a system according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of an application scenario corresponding to example 1 and example 2;

FIG. 10 is a schematic diagram of information interaction corresponding to example one;

11 is a schematic diagram of information interaction corresponding to Example 2;

FIG. 12 is a schematic diagram of an application scenario corresponding to the third example;

FIG. 13 is a schematic diagram of information interaction corresponding to Example 3 and Example 4;

14 is a schematic diagram of information interaction corresponding to Example 4;

15 is a schematic diagram of an application scenario corresponding to example five;

16 is a schematic diagram of information interaction corresponding to example five;

17 is a schematic diagram of information interaction corresponding to Example 6;

FIG. 18 is a schematic diagram of information interaction corresponding to Example 7.

detailed description

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

As shown in Figure 1, the communication system of the present invention involves three network entities, which are briefly described here:

The first type of site is a communication site that uses a beam-transmitting antenna to transmit beams. The transmission in multiple beam directions achieves coverage of the intended area. Typically, the first type of station is a high frequency frequency point operating in the centimeter wave band or the millimeter wave band, for example, above 6 GHz (eg, 45 GHz, 60 GHz, etc.).

For high-frequency base stations (HBS), directional beams are usually transmitted to improve the antenna gain, and coverage of the expected area is achieved by combining multiple beam directions. The first type of station may be a high-frequency communication system. Macro base station, micro station (such as pico, Fetmo, etc.), access point (such as relay node Relay, etc.).

The second type of station is a communication station that uses a beamwidth wider than the first type of station beamwidth or uses sector transmission or uses quasi-omnidirectional or omnidirectional transmission to assist the first type of station to the first All terminals in a subordinate cell of a type of station broadcast and transmit the first type of system broadcast message. Typically, the second type of site is a low frequency frequency operating below 6 GHz, such as an LTE system eNB (evolved base station) currently operating at 2.4 GHz, employing 120 degree sector transmission. The second type of site also includes communication sites that use 360-degree omnidirectional antennas or near-omnidirectional (quasi-omnidirectional) antennas; the second type of stations also include communication sites that also utilize beam-beamed antenna transmit beams. And it has a wider beamwidth than the first type of site that requires auxiliary transmission, ie better coverage can be obtained.

Hereinafter, the eNB is taken as an example for description, and other systems (such as Global System for Mobile Communication (GSM), Universal Mobile Telecommunications System (UMTS), code division multiple access 95/code Base stations under the Multiple Access 2000 (CDMA95/CDMA2000), LTE-A system, etc. are similar to the eNB.

The coverage of the subordinate cell (cell1) of the second type of site overlaps with the subordinate cell (cell2) of the first type of site; typically, the subordinate cell (cell1) of the second type of site completely covers the subordinate cell (cell2) of the first type of site. Coverage. Therefore, the second type of station can assist the first type of station in the cell1 to broadcast the cell level system broadcast message of the cell 2 (the first type of system broadcast message) to all the terminals in the cell 2.

The terminal supports access to the first type of site and the second type of site, that is, the terminal supports the high frequency in the microwave Working in the frequency band and low frequency band.

As shown in FIG. 2, the system broadcast message sending method of the present invention, the system broadcast message is divided into two categories, and the first type of system broadcast message is a cell-level system broadcast message, and is sent to the omnidirectional transmission mode by the first-type site of the directional transmission mode. The second type of station is sent to the terminal by the second type of station, and the second type of system broadcast message is a beam level system broadcast message, which is sent to the terminal by the first type of station.

As shown in FIG. 3, an embodiment of the present invention provides a method for transmitting a system broadcast message, which is applied to a first type of site, and the method includes:

S301. Determine whether a system broadcast message offload transmission is performed between the second type of sites.

Wherein the first type of station uses an antenna transmitting beam having a beam characteristic; the second type of station uses a beam having a wider beam width than the first type of station to transmit, or uses a sector to transmit, or adopts a quasi The omnidirectional or omnidirectional transmission; the coverage of the subordinate cell of the second type of site overlaps with the coverage of the subordinate cell of the first type of site;

The determining whether to perform system broadcast message offload transmission with the second type of site includes determining by using any one of the following a)-c) manners:

a) receiving the configuration information of the high-level node, where the configuration information indicates that the system broadcast message of the cell of the first-type site is sent by the second-type site;

b) receiving a request message that the second type of station performs offload transmission on the system broadcast message of the cell of the first type of site;

And transmitting a request message for offloading the system broadcast message of the cell of the first type of site to the second type of site, and receiving the consent auxiliary sending station returned by the second type of site a response message of a system broadcast message of a cell of the first type of site;

S302. After determining that the system broadcast message is offloaded with the second type of site, send the first type of system broadcast message to the second type of site.

The first type of system broadcast message carries the cell-level public system information of the cell of the first type of site;

The sending the first type of system broadcast message to the second type of site includes:

Transmitting the first type of system broadcast message to the second type of site by using a direct interface with the second type of site, or forwarding the first type of system broadcast message to the second type by a core network side entity Site

The first type of system broadcast message includes at least one of the following information: an identifier, a system bandwidth, a cell selection information, and an access of a cell of the first type of site corresponding to the first type of system broadcast message. Configuration information, common channel configuration information, dedicated channel configuration information, cell reselection related information, and early warning information.

The cell selection information is used by the user terminal to determine whether the cell is suitable for the user terminal to select the access; the access configuration information is used to indicate that the user terminal accesses the relevant configuration parameter of the cell;

The method further includes:

The sending configuration information includes at least one of the following information: a sending mode indication information, a time-frequency resource, a sending period, a sending frequency, an update period, a coded modulation mode, and a scrambling code information of the first type of system broadcast message;

The sending manner of the first type of system broadcast message includes: a periodic sending manner or a sending manner based on a terminal request;

The scrambling code information refers to a scrambling sequence used when the second type of station sends scheduling indication information of the first type of system broadcast message; wherein the scrambling sequence and the first type system broadcast message Corresponding to the cell identifier of the subordinate cell of the first type of site to which the home station belongs;

S303. Send a second type of system broadcast message corresponding to the beam in a beam direction corresponding to the user terminal.

The common system information related to the beam includes at least one of the following information: beam tracking related information, common channel configuration information, and dedicated channel configuration information;

The beam tracking related information is used to assist the user terminal in performing preferred downlink beam reselection, including information about a beam adjacent to the beam;

The beam tracking related information includes at least one of the following information: an index of an adjacent beam, a time-frequency domain position of the beam identification signal, and a sequence used by the beam identification signal;

The method further includes:

The synchronization signal is further configured to indicate to the user terminal at least one of the following a)-e) information:

a) whether the first type of site performs offloading of system broadcast messages with the second type of site;

b) the cell identity of the subordinate cell of the first type of site;

c) a downlink transmission beam of the first type of station to which the synchronization signal belongs;

d) an identifier of a subordinate cell of the second type of site that performs offloading of the system broadcast message with the first type of station;

e) a frequency point of a subordinate cell of the second type of station that performs offloading of the system broadcast message with the first type of station;

The method further includes:

After determining that the system broadcast message is not offloaded with the second type of site, the first type of system broadcast message and/or the second type of system broadcast message are independently sent in the subordinate cell;

As shown in FIG. 4, an embodiment of the present invention provides a method for transmitting a system broadcast message, which is applied to a second type of site, and the method includes:

S401. Determine whether a system broadcast message offload transmission is performed between the first type of sites.

The determining whether to perform system broadcast message offload transmission with the first type of site includes determining by using any one of the following a)-c) manners:

And c) actively sending, to the first type of station, a request message for offloading the system broadcast message of the cell of the first type of site;

S402. After determining that the system broadcast message is offloaded with the first type of site, receiving the first type of system broadcast message.

The first type of system broadcast message includes at least one of the following information: an identifier, a system bandwidth, a cell selection information, and an access of a cell of the first type of site corresponding to the first type of system broadcast message. Configuration information, common channel configuration information, dedicated channel configuration information, cell reselection related information, and early warning information;

The receiving the first type of system broadcast message includes: receiving the first type of system broadcast message through a direct interface with the first type of site, or receiving the first type of system broadcast by using a core network side entity Message

The method further includes:

The obtaining configuration information of the broadcast message of the first type of system includes acquiring by using any one of the following a)-c) manners:

a) according to the system pre-defined transmission configuration information of the first type of system broadcast message;

b) receiving, by the first type of station, sending configuration information of the first type of system broadcast message;

c) autonomously determining the transmission configuration information of the first type of system broadcast message;

The sending configuration information of the first type of system broadcast message includes at least one of the following information: a sending mode indication information, a time-frequency resource, a sending period, a sending frequency, an update period, and a coding of the first type of system broadcast message. Modulation method, scrambling code information;

The sending manner of the first type of system broadcast message includes: a periodic sending manner or a base The method of sending the request to the terminal;

S403. After receiving the first type of system broadcast message, broadcast the first type of system broadcast message in a subordinate cell of the local station.

The broadcasting the first type of system broadcast message in the subordinate cell of the site includes:

And transmitting, according to the sending configuration information of the first type of system broadcast message, the first type of system broadcast message in a subordinate cell of the local station;

The transmitting, according to the sending configuration information of the broadcast message of the first type of system, the first type of system broadcast message in a subordinate cell of the local station, including adopting at least one of the following a)-d) modes. Sending the first type of system broadcast message:

a) transmitting the first type of system broadcast message on a time-frequency resource indicated by the system pre-defined or the first type of site by using a code pre-defined or a coded modulation mode indicated by the first type of station;

b) loading the first type of system broadcast message on the data transmission resource of the second type of site by using a code precoding defined by the system or the coded modulation mode indicated by the first type of station, and sending a scheduling to the terminal through the control channel Instructing information, where the scheduling indication information is used to indicate a specific time-frequency domain location of the first type of system broadcast message, and is scrambled by the specified scrambling code sequence;

c) autonomously determining a transmission configuration of the first type of system broadcast message, and indicating the transmission configuration to a user terminal by using a control channel or a dedicated radio resource control (RRC) signaling, where the control channel is within the control channel Scheduling finger used to indicate the sending configuration The information is scrambled with the specified scrambling code sequence;

And receiving a response message according to the first type of system broadcast message sent by the user terminal, and transmitting the configuration information of the first type of system broadcast message in the response message;

The time domain resource of the first type of system broadcast message that is predefined by the system includes: a system pre-defines a time domain resource that sends the first type of system broadcast message, and the first type of site or the The timing relationship between the synchronization signals of the second type of stations; or the relationship between the time domain resources of the first type of system broadcast messages and the identifiers of the subordinate cells of the first type of system to which the first type of system broadcast messages belong ;

The frequency domain resource of the first type of system broadcast message that is predefined by the system includes: a system pre-defined to send the frequency domain resource of the first type system broadcast message and the first type system broadcast message belongs to The relationship between the cell identifiers of the first type of sites.

As shown in FIG. 5, an embodiment of the present invention provides a method for transmitting a system broadcast message, which is applied to a user terminal, and the method includes:

S501. Obtain information about whether the system broadcast message is transmitted and offloaded between the first type of site and the second type of site.

The information about whether to perform system broadcast message offload transmission between the first type of site and the second type of site includes:

Receiving a synchronization signal sent by the first type of station, and determining, according to the indication information carried in the synchronization signal, whether to perform system broadcast message offload between the first type of station and the second type of station transmission;

b) the cell identity of the subordinate cell of the first type of site;

S502. After determining that the system broadcast message is offloaded between the first type of station and the second type of station, receiving a first type of system broadcast message sent by the second type of station.

The receiving, by the receiving, the first type of system broadcast message sent by the second type of site includes:

Searching for and accessing the subordinate cell of the second type of site according to the acquired frequency and identifier of the subordinate cell of the second type of site, and receiving the first type of system broadcast sent by the second type of site after the access is successful Message

Obtaining the sending configuration information of the first type of system broadcast message, and receiving the first type of system broadcast message sent by the second type of station according to the sending configuration information;

The obtaining the sending configuration information of the first type of system broadcast message includes acquiring by using any one of the following a)-d) manners:

a) determining, according to the system predefined, the sending configuration information of the first type of system broadcast message;

b) descrambling the scheduling indication information sent by the second type of station in the control channel by using the scrambling code sequence corresponding to the subordinate cell identifier of the first type of station, and acquiring the transmission configuration information of the first type system broadcast message ;

And receiving the second type of station control channel or the dedicated radio resource control RRC signaling, and acquiring the transmission configuration information, where the scheduling indication information for indicating the sending configuration is used by the specified scrambling code sequence Scrambling

And sending the first type of system broadcast message request information to the second type of site, receiving a response message replied by the second type of site, and acquiring the first type of system broadcast message from the response message. Sending configuration information, where the first type of system broadcast message request information includes an identifier of a cell of a first type of site to which the first type of system broadcast message to be requested by the user terminal belongs;

The scrambling code information refers to that the second type of station sends the first type of system broadcast message. a scrambling sequence used when scheduling the indication information; wherein the scrambling sequence corresponds to a cell identifier of a subordinate cell of the first type of site to which the first type of system broadcast message belongs;

The method further includes:

S503. Receive a second type of system broadcast message sent by the first type of station.

The receiving, by the receiving, the second type of system broadcast message sent by the first type of station includes:

Determining, according to the received first-class system broadcast message, that the cell of the first-type site is suitable for selection, and after accessing the cell that is suitable for selection, receiving the first-type site to be transmitted in a beam direction where the user terminal is located The second type of system broadcasts messages;

The method further includes:

And after receiving the system broadcast message offload transmission between the first type of station and the second type of station, receiving the first type of system broadcast message and the second type of system broadcast message sent by the first type of station.

As shown in FIG. 6, an embodiment of the present invention provides a system for transmitting a broadcast message of a system, which is applied to a first type of site, including:

The analysis module 601 is configured to determine whether to perform a system broadcast message with the second type of site Split transmission

The first sending module 602 is configured to send a first type of system broadcast message to the second type of site after determining to perform a system broadcast message offload transmission with the second type of site;

Wherein, the device further comprises:

The second sending module 603 is configured to send a second type of system broadcast message corresponding to the beam in a beam direction corresponding to the user terminal;

The analyzing module 601 is configured to determine whether to perform system broadcast message offload transmission with the second type of station, including determining by using any one of the following a)-c) manners:

And transmitting a request message for offloading the system broadcast message of the cell of the first type of site to the second type of site, and receiving the consent returned by the second type of site to send the subordinate cell of the first type of site System broadcast message response message.

Wherein, the device further comprises:

The third sending module 604 is configured to send, to the second type of station, sending configuration information of the first type of system broadcast message;

Wherein, the device further comprises:

The fourth sending module 605 is configured to send a synchronization signal in the subordinate cell of the local station, where the synchronization signal is used for the user terminal to synchronize with the local station;

b) the cell identity of the subordinate cell of the first type of site;

e) a frequency point of a subordinate cell of the second type of station that performs offloading of the system broadcast message with the first type of station.

The first sending module 602 is configured to send the first type of system broadcast message to The second type of site includes:

As shown in FIG. 7, an embodiment of the present invention provides a system for transmitting a broadcast message of a system, which is applied to a second type of site, including:

The determining module 701 is configured to determine whether to perform system broadcast message offload transmission with the first type of station;

The receiving module 702 is configured to receive the first type of system broadcast message after determining to perform offloading of the system broadcast message with the first type of station;

The sending module 703 is configured to: after receiving the first type system broadcast message, broadcast and send the first type system broadcast message in a subordinate cell of the local station;

The determining module 701 is configured to determine whether to perform system broadcast message offload transmission with the first type of site, including determining by using any one of the following a)-c) manners:

b) after receiving the request message that the first type of station performs the offload transmission on the system broadcast message of the cell of the first class site, determining that the site has the auxiliary sending the cell of the first class site The ability of the system to broadcast messages;

c) actively sending a request message for offloading the system broadcast message of the cell of the first type of site to the first type of station.

The receiving module 702 is configured to receive the first type of system broadcast message, including: receiving, by using a direct interface with the first type of site, the first type of system broadcast message, or receiving, by a core network side entity, The first type of system broadcast message.

The determining module 701 is further configured to acquire sending configuration information of the first type system broadcast message;

The determining module acquires the sending configuration information of the first type of system broadcast message, including acquiring by using any one of the following a)-c) manners:

c) Autonomously determining the transmission configuration information of the first type of system broadcast message.

The sending configuration information of the first type of system broadcast message includes at least one of the following information: a sending mode indication information, a time-frequency resource, a sending period, a sending frequency, an update period, and a coding of the first type of system broadcast message. Modulation method, scrambling code information.

The sending module 703 is configured to broadcast and send the first type of system broadcast message in a subordinate cell of the local station, including:

The sending module 703 is configured to broadcast and send the first type of system broadcast message in a subordinate cell of the local station according to the sending configuration information of the first type of system broadcast message, including adopting the following a)-d) manner At least one of the broadcasts transmitting the first type of system broadcast message:

And c) autonomously determining a transmission configuration of the first type of system broadcast message, and indicating the transmission configuration to the user terminal by using a control channel or a dedicated radio resource control RRC signaling, where the control channel is used to indicate the sending The configured scheduling indication information is scrambled with the specified scrambling code sequence;

And receiving a response message according to the first type of system broadcast message sent by the user terminal, and carrying the configuration information of the first type of system broadcast message in the response message.

As shown in FIG. 8, an embodiment of the present invention provides a system for transmitting a broadcast message of a system, which is applied to a user terminal, and includes:

The information obtaining module 801 is configured to obtain information about whether the system broadcast message is offloaded between the first type of site and the second type of site;

The first receiving module 802 is configured to receive the first type of system broadcast message sent by the second type of station after determining that the system broadcast message is offloaded between the first type of station and the second type of station;

Wherein, the device further comprises:

The second receiving module 803 is configured to receive a second type of system broadcast message sent by the first type of station;

The information obtaining module 801 is configured to obtain information about whether the system broadcast message is distributed and transmitted between the first type of site and the second type of site, including:

a) whether the first type of site is diverted from the system broadcast message between the second type of site transmission;

b) the cell identity of the subordinate cell of the first type of site;

The first receiving module 802 is configured to receive the first type of system broadcast message sent by the second type of station, including:

The first receiving module 802 is configured to acquire the sending configuration information of the first type of system broadcast message, including acquiring by using any one of the following a)-d) manners:

And sending the first type of system broadcast message request information to the second type of site, receiving a response message replied by the second type of site, and acquiring the first type of system broadcast message from the response message. Sending configuration information, where the first type of system broadcast message request information includes an identifier of a cell of a first type of site to which the first type of system broadcast message to be requested by the user terminal belongs.

The second receiving module 803 is configured to receive the second type of system broadcast message sent by the first type of station, including:

Specific example

The invention will be described in detail below with reference to the drawings and specific examples.

Example one

FIG. 9 is an application scenario corresponding to the present invention. In this example, the terminal initially accesses a cell subordinate to the high frequency station. As shown in FIG. 10, the method for transmitting a system broadcast message may include the following steps:

Step 1: The system broadcast message is divided between the high-frequency station and the eNB; that is, the high-frequency station transmits the first-class system broadcast message (that is, the cell-level system broadcast message) to the eNB, and requests the eNB to send the assistance to the subordinate terminal for its assistance;

The high-level node configures the eNB to perform system broadcast message shunting for the high-frequency station, and notifies the eNB and the high-frequency station respectively. The high-level node here may be the network management side network element (such as the device management system EMS and the network management system (Network Management System). NMS), Operation Administration and Maintenance (OAM), or core network side network elements (such as Mobile Management Entity (MME), Serving GateWay (S-) GW), Packet Data Network GateWay (P-GW), etc.). The specific method of the traffic distribution may be performed by a direct interface between the two sites (such as the X2 port), or the high-frequency site sends the first type of system broadcast message to the core network side entity (such as the MME), and the core network side entity forwards the corresponding eNB.

Thereafter, the eNB may send the first type of system broadcast message according to a pre-defined coding and modulation mode of the system, and the time-frequency resource occupied by the first type of system broadcast message is dynamically scheduled by the eNB, and the first time is scrambled by the scrambling code sequence corresponding to the cell 2 The scheduling indication information of the class system broadcast message, the scrambling code sequence may be obtained by a certain operation of the cell identifier of the cell 2.

Step 2: Boot the terminal

The terminal sweeps to obtain the high frequency cell frequency (such as f2=45.5 GHz) existing nearby, and recognizes the synchronization signal transmitted by the high frequency station.

Step 3: The terminal processes the detected synchronization signal, synchronizes with the high frequency station through the synchronization signal, and reads the cell identifier of the cell 2 (such as 00000010); in addition, the cell level system broadcast of the cell 2 The message is transmitted by the eNB in the range of cell1. Therefore, the synchronization signal uses the first bit to indicate that the first type of system is used to transmit the first type of system broadcast. The synchronization signal carries the identifier of the cell 1 of the eNB (such as 00000001) and the frequency information (such as f1=2.4 GHz). This can be achieved by different designs of the synchronization signal, for example, the different fields of the sequence of synchronization signals respectively indicate the above information, the upper eight bits indicate the identity of cell1, and the lower four bits indicate the frequency of cell1. Or it is also possible to use the synchronization signal to transmit the occupied time-frequency domain resources to indicate the cell1 related information.

Step 4: The terminal searches for cell1 in the frequency information identified in step 3, and accesses cell1. If the terminal has already accessed cell1, the step may be omitted.

Step 5: The terminal, in the control channel of the eNB, uses the scrambling code sequence corresponding to the cell 2 to descramble the scheduling indication information of the first type of system broadcast message, and obtains the time frequency occupied by the first type of system broadcast message from the scheduling indication information. The resource decodes and demodulates the first type of system broadcast message in a predefined code modulation manner. The scrambling code sequence is: 10101010 (the scrambling code sequence corresponds to the identifier of the subordinate cell of the high frequency station, and may be the identifier of the subordinate cell of the high frequency station, or the code word obtained by the operation of the subordinate cell identifier of the high frequency station through a certain operation. )

It includes: system bandwidth of cell2, cell selection information, access configuration information, public or shared channel configuration information, cell reselection related information, and early warning information.

The terminal determines, according to the received first-class system broadcast message, whether cell 2 is suitable for selection, that is, whether access is restricted. If it is suitable for selection, the high-frequency cell cell2 is further connected. During the access process, the preferred downlink transmit beam is fed back to the high-frequency station, and the subsequent high-frequency station uses the preferred downlink beam fed back by the terminal to send information to the terminal.

Step 6: The high frequency station sends a second type of system broadcast message to the terminal on the preferred downlink beam;

The second type of system broadcast message includes beam tracking related information, and indicates to the beam subordinate terminal beam information adjacent to the beam, which is used to assist the terminal to perform preferred downlink beam reselection; that is, during normal communication of the terminal, It may be necessary to update the preferred downlink beam due to a change in its relative position to the high frequency station or a change in the environment on the transmission path. Therefore, a beam tracking process is required. Specifically, the beam tracking related information includes: an index of an adjacent beam, a time-frequency domain position of the beam identification signal, and a sequence used by the beam identification signal.

Example two

In the application scenario shown in FIG. 9, in this example, the terminal initially accesses a cell subordinate to the high frequency station. As shown in FIG. 11, the method for transmitting a system broadcast message may include the following steps:

Step 1: the high-frequency station and the eNB determine to perform system broadcast message offload transmission, and the high-frequency station transmits the first type of system broadcast message (that is, the cell-level system broadcast message) to the eNB, and requests the eNB to send the assistance to the subordinate terminal for its assistance;

The method for determining the offload transmission is: the high frequency station sends a “first type system broadcast message offload transmission request message” to the eNB, and requests the eNB to offload the first type of system broadcast message (the request message includes the identifier of the subordinate cell of the high frequency station) And the size of the first type of system broadcast message, the sending period, the number of times of transmission, and the like are used by the eNB to evaluate the parameter of the offloaded transmission overhead. The eNB determines that the high frequency station can perform offload transmission according to the current load state.

The specific method for performing the offload transmission request and response between the high frequency station and the eNB, and the subsequent determining the high frequency station to send the first type of system broadcast message to the eNB after the offload transmission may be: through a direct interface between the two sites (such as the X2 port) The delivery is performed, or the high-frequency station sends the first type of system broadcast message to the core network side entity (such as the MME), and the core network side entity forwards the message to the corresponding eNB.

Thereafter, the eNB may send the first type of system broadcast message according to the system predefined transmission configuration broadcast. The system pre-defines the transmission configuration of the eNB to send the first type of system broadcast message, and the eNB, the high-frequency station, and the terminal all pre-agreed the same rule. Therefore, the sending configuration does not require additional signaling overhead to notify; specifically, the sending configuration includes: the sending mode is periodic sending, and the transmitting time domain resource is: time domain: high frequency station synchronization signal time plus 4 ms (hence, eNB Synchronization with the high-frequency station), the frequency domain: the starting point is the total number of RBs of the cell identifier mod of the high-frequency station, the number of occupied RBs is 6, the period is 40ms, the update period is 160ms, and the coding modulation mode is QPSK.

Step 2: Boot the terminal

Step 3: The terminal processes the detected synchronization signal, synchronizes with the high frequency station through the synchronization signal, and reads the cell identifier of the cell 2 (such as 00000010); In addition, since the cell-level system broadcast message of the cell 2 is transmitted by the eNB in the range of the cell 1, the synchronization signal transmits the first-type system broadcast message by using the first-type site by using the 1-bit indication, and the synchronization signal simultaneously carries the cell 1 of the eNB subordinate cell. Identification (such as 00000001) and frequency information (such as f1 = 2.4GHz). This can be achieved by different designs of the synchronization signal, for example, the different fields of the sequence of synchronization signals respectively indicate the above information, the upper eight bits indicate the identity of cell1, and the lower four bits indicate the frequency of cell1. Or it is also possible to use the synchronization signal to transmit the occupied time-frequency domain resources to indicate the cell1 related information.

Step 5: The terminal calculates the time-frequency domain location of the first-class system broadcast message according to the predefined transmission configuration of the system: frequency domain: cell2 cell identification code (00000010) modulo total RB number of the eNB system (100) = 2 mod100=2 , that is, the starting point is RB2, occupying 6 RBs, receiving the first type of system broadcast message at the position where the terminal receives the synchronization signal of the high frequency station plus 4 ms, and decoding and demodulating the system from the predefined code modulation mode. The first type of system broadcasts messages. It includes: system bandwidth of cell2, cell selection information, access configuration information, public or shared channel configuration information, cell reselection related information, and early warning information.

Example three

In the application scenario shown in FIG. 12, in this example, the terminal initially accesses a cell subordinate to the low frequency network. As shown in FIG. 13, the method for transmitting a system broadcast message may include the following steps:

The difference between this example and the first example is that after the terminal is powered on, the terminal first accesses the cell 1 of the low-frequency network eNB. When there is a service suitable for high-frequency transmission, the search for the high frequency band is started. At this time, the eNB can provide assistance to the terminal. The information, for example, the working frequency of the high frequency cell in the coverage of the eNB, the cell identifier, the time-frequency location information of the synchronization signal, etc., the terminal searches for a cell with a high signal strength in the high frequency cell list provided by the eNB, and detects the high frequency station. The transmitted synchronization signal obtains the identifier of the high frequency cell according to the time-frequency domain position of the synchronization signal or the synchronization signal itself.

Note: The terminal may detect multiple high-frequency cells (High-frequency Base Sation (HBS) 2 subordinate cell cell2, HBS1 subordinate cell cell3) in the high-frequency cell list.

In this embodiment, when the eNB receives the first type of system broadcast message covering each of the high frequency cells, and according to the requirement of the first type of system broadcast message transmission configuration, the eNB needs to broadcast and transmit the specific request when receiving the specific request of the terminal. The first type of system broadcast message of the high frequency cell.

The terminal detects the cell 2 and the cell 3, and requests the eNB to request the first type of system broadcast messages of the two high frequency cells;

The eNB first sends configuration information of the first type of system broadcast message to the terminal, and indicates to the terminal the time-frequency domain resource where the first type of system broadcast message corresponding to the cell 2 and the cell 3 is located, and the configuration of the transmission period, the number of times of transmission, the code modulation mode, and the like; Subsequently, the system broadcast messages of the above two cells are transmitted on the corresponding resources.

After receiving the first type system broadcast message corresponding to the cell 2 cell and the first type system broadcast message corresponding to the cell 3 cell in the cell 1, the terminal knows that the cell 2 is not suitable for the terminal selection, and therefore selects the cell 3 as the high frequency serving cell.

The subsequent terminal will access cell3 and receive the second type of system broadcast message in cell3.

Note: In this embodiment, when the eNB receives the first type of system broadcast message request from the terminal, the eNB firstly feeds back the first type of system broadcast message sending configuration information; or the system pre-defines the first type of system broadcast message sending configuration mode. That is, the eNB and the terminal send and receive the first type system broadcast message according to the system's predefined transmission configuration.

Example four

In the application scenario shown in FIG. 12, in this example, the terminal initially accesses a cell subordinate to the low frequency network. As shown in FIG. 14, the method for transmitting a system broadcast message may include the following steps:

This example differs from the third example in the dashed box portion of FIG. That is, the eNB sends the first type of system broadcast message of each high frequency station according to the system's predefined transmission configuration. Specifically, the system pre-defined the transmission configuration as follows: the transmission mode is periodic transmission, and the transmission time frequency domain resource is: time domain: The high-frequency station synchronization signal is added for 4ms (therefore, the eNB needs to synchronize with the high-frequency station), and the frequency domain: the starting point is ((the high-frequency station subordinate cell identification code) mod (the total resource block (Resource Block, RB for short) )) ×6, the number of occupied RBs is 6, the period is 40ms, the update period is 160ms, and the code modulation mode is Quadrature Phase Shift Keying (QPSK).

In the mode that the system pre-defines the configuration, the terminal detects the cell 2 (identified as 00000010) and the cell 3 (identified as 00000011), and receives the first type of system broadcast messages of the two cells according to the predefined by the system;

Determine the time-frequency domain location: cell2: synchronization time + 4ms, frequency domain: (2mod 100) × 6 = 12; cell3: synchronization time + 4ms, frequency domain: (3mod 100) × 6 = 18. For example, the synchronization between cell2 and cell3 is at the time of subframe 0, that is, the time at which the cell2 and cell3 system broadcast messages are located is subframe 4, the frequency domain cell2 is RB12-RB17, and the cell3 is RB18-RB23. The terminal then solves the first type of system broadcast messages of the two cells in a predefined decoding and demodulation manner.

Example five

In the application scenario shown in Figure 15, in this example, the high and low frequency co-sites, through the subordinates of the site The low frequency resource transmits the first type of system broadcast message of the high frequency cell, and the second type system broadcast message is sent by the high frequency beam, and the terminal initial access to the receiving system broadcast message flow is shown in FIG. 16 , wherein the dotted line is shown in the low frequency band. Signaling interaction, the solid line shows the signaling interaction in the high frequency band, as described in detail below:

Step 1: The terminal is powered on, receives the synchronization signal at a low frequency, and obtains downlink synchronization with the station BS;

Step 2: receiving the system broadcast message of the low frequency cell 1 in the low frequency band, and accessing the low frequency cell; wherein the system broadcast message of the low frequency cell includes the frequency and identification information of the cell 2 covering the high frequency cell;

Step 3: After accessing the low frequency cell, the terminal receives the first type of system broadcast message of the high frequency cell 2 in a fixed time frequency position of the low frequency band;

Step 4: User equipment (User Equipment, UE for short) and Base Station (BS) perform uplink and downlink transmission and reception beam training in a high frequency band to determine a preferred downlink transmission beam, a preferred downlink reception beam, and preferably an uplink transmission beam. Preferably, the uplink receiving beam is obtained; after the preferred beam identification process is completed, the UE and the BS can feed back the preferred uplink and downlink transmit beams to the transmitting end through the low frequency;

That is, the downlink preferred transmission and reception beam training process: the BS transmits the training signal through each beam direction, and after identifying the downlink preferred transmit beam and the downlink preferred receive beam, the UE feeds back the downlink preferred transmit beam identifier (or index) to the BS for use. Instructing the subsequent BS to send information to the UE through the corresponding downlink preferred transmit beam; similarly, in the uplink preferred transmit and receive beam training process, the UE sends the training signal in each beam direction, and the BS identifies the uplink preferred transmit beam and the uplink preferred receive beam, and The uplink preferred transmit beam is fed back to the UE to indicate that the uplink data of the UE is transmitted by the uplink preferred transmit beam direction.

Step 5: Through the beam training process in step 4, the BS sends a second type of system broadcast message to the UE in the beam direction where the high frequency UE is located;

Step 6: Through the beam training process in step four, the BS and the UE can perform uplink and downlink data interaction through the preferred beam.

That is, the BS can send downlink information through the downlink preferred transmit beam, and the UE can pass the uplink optimization. The transmit beam is selected to transmit uplink information; the BS receives the uplink information by using the uplink preferred receive beam, and the UE receives the downlink information by using the downlink preferred receive beam.

Example six

This example is applicable to the system broadcast message update process after the UE normally accesses the network. The scenarios shown in Figure 9 and Figure 12 are applicable. The process is shown in Figure 17, which is described in detail below.

Step 1: Perform the first type of system broadcast message content update between sites;

There are many ways to do this:

1. When the first type of system broadcast message of the subordinate cell of the HBS is updated, the first type of system broadcast message update message is actively sent to the corresponding eNB;

2. The eNB requests the HBS to update the first type of system broadcast message to the eNB in a certain update period. When there is an update, the HBS feeds back the updated content of the first type of system broadcast message to the eNB;

3. The broadcast message of the HBS system has a certain update period. When each update period comes, the content of the first type of system broadcast message is actively sent to the eNB; if the update period comes, but the first type of system broadcast message does not update, the HBS It is also necessary to actively send an indication to the eNB that the first type of system broadcast message is not updated.

There are also two interaction modes for updating the first type of system broadcast messages between the HBS and the eNB: through direct interface interaction between sites, or through core network entities (such as MME).

Step 2: When the eNB receives the update of the first type of system broadcast message, it may indicate to the UE whether there is information update in a certain update period; the UE monitors the first type of system broadcast message update indication information sent by the eNB, if the indication information If the indication is updated, the UE receives the updated first type system broadcast message when the next first type of system broadcast message transmission timing arrives; or the UE re-requests the first type system broadcast message to receive feedback from the eNB.

Step 3: The UE receives the second type system broadcast message sent by the HBS in the high frequency band, and the second type system broadcast message can start sending the updated second type system broadcast message when the specified update period comes, when the second type system broadcast message After being updated or updated, HBS can pass the special Signaling is used to indicate an update of the UE's second type of system broadcast message.

Note: After the terminal accesses the network, it can receive the first type of system broadcast message of the eNB in the low frequency band according to the transmission period of the first type of system broadcast message, or request the eNB to send the first type system broadcast message according to its own needs. Similarly, the terminal receives the second type of system broadcast message of the HBS in the high frequency band according to the transmission period of the second type of system broadcast message, or requests the HBS to send the second type system broadcast message according to its own needs.

Example seven

This example is for the case where the system broadcast message is not split-transported. The process is shown in Figure 18, which is described in detail below:

The high frequency station sends a “first type system broadcast message offload transmission request message” to the eNB, and requests the eNB to offload the first type of system broadcast message (the request message includes the identifier of the subordinate cell of the high frequency station, and the first type system) The size of the broadcast message, the transmission period, the number of transmissions, and the like are used by the eNB to evaluate the parameters of the offload transmission overhead);

Based on the current load status of the eNB, the eNB determines that the request of the high frequency station for the offload transmission cannot be satisfied. The eNB replies to the response message and rejects the offload transmission.

At this time, the high frequency station needs to complete the transmission of all system broadcast messages independently (including the first type of system broadcast message and the second type of system broadcast message). And in the synchronization signal, the terminal indicates that the first type of station does not currently have a first type of system broadcast message, and the terminal receives the system broadcast message at the high frequency station after learning that the split signal is not used in the synchronization signal.

The method and device for transmitting system broadcast messages are provided by the foregoing embodiments. The system broadcast messages are classified into two types. The first type of system broadcast messages are cell-level system broadcast messages, and are sent to the omnidirectional transmission by the first type of directional transmission mode. The second type of site is sent to the terminal by the second type of station, and the second type of system broadcast message is a beam level system broadcast message, by the first type of site. The method for transmitting the broadcast message of the system of the present invention avoids the problem of excessive signaling overhead caused by repeated transmission of the full-beam of the system broadcast message on the premise of ensuring the reception performance of the system broadcast message.

Embodiments of the present invention also provide a storage medium. Alternatively, in the present embodiment, the above storage medium may be provided as program code for storing steps for performing the method of the embodiment shown in FIG. 3 or FIG. 4 or FIG. 5 in the embodiment.

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

One of ordinary skill in the art will appreciate that all or a portion of the steps described above can be accomplished by a program that instructs the associated hardware, such as a read-only memory, a magnetic or optical disk, and the like. Optionally, all or part of the steps of the foregoing embodiments may also be implemented by using one or more integrated circuits. Accordingly, each module/unit in the foregoing embodiment may be implemented in the form of hardware, or may be implemented by using a software function module. Formal realization. The invention is not limited to any specific form of combination of hardware and software.

It is to be understood that the invention may be susceptible to various other modifications and changes in the embodiments of the present invention without departing from the spirit and scope of the invention. Corresponding changes and modifications are intended to be included within the scope of the appended claims.

Industrial applicability

A method and device for transmitting a system broadcast message according to an embodiment of the present invention, the system broadcast message is divided into two categories, and the first type of system broadcast message is a cell-level system broadcast message, which is directed by The first type of station in the transmitting mode is sent to the second type of station in the omnidirectional transmission mode, and then sent to the terminal by the second type of station, and the second type of system broadcast message is a beam level system broadcast message, which is sent by the first type of station. To the terminal, the method for transmitting the broadcast message of the system of the present invention avoids the problem of excessive signaling overhead caused by repeated transmission of the full-beam of the system broadcast message on the premise of ensuring the reception performance of the system broadcast message.

Claims

A method for transmitting a system broadcast message is applied to a first type of site, and the method includes:

Transmitting a first type of system broadcast message to the second type of site in the case of performing system broadcast message offload transmission with the second type of site;

Wherein the first type of station uses an antenna transmitting beam having a beam characteristic; the second type of station uses a beam having a wider beam width than the first type of station to transmit, or uses a sector to transmit, or adopts a quasi The omnidirectional or omnidirectional transmission; the coverage of the subordinate cell of the second type of site overlaps with the coverage of the subordinate cell of the first type of site; the first type of system broadcast message carries the first type of site Cell-level public system information of subordinate cells.
The method of claim 1 wherein, prior to transmitting the first type of system broadcast message to the second type of site, the method further comprises:

Determining whether to perform system broadcast message offload transmission with the second type of site.
The method of claim 2, wherein the method further comprises:

Transmitting, according to a beam direction corresponding to the user terminal, a second type of system broadcast message corresponding to the beam;

The second type of system broadcast message carries public system information related to the beam;

The common system information related to the beam includes at least one of the following information: beam tracking related information, common channel configuration information, and dedicated channel configuration information.
The method of claim 1 or 2 wherein:

Any one of the following ways determines to perform system broadcast message offload transmission with the second type of site:

Receiving configuration information of the high-level node, where the configuration information indicates that the system broadcast message of the cell of the first-type site is sent by the second-type site;

Receiving a request message for offloading the system broadcast message of the cell of the first type of site to the second type of site;

Sending, to the second type of station, a request message for performing a offload transmission on the system broadcast message of the cell of the first type of site, and receiving a system that is returned by the second type of site to support sending the cell of the first type of site The response message for the broadcast message.
The method of claim 1 or 2, wherein the method further comprises:

Sending, by the first type of station, sending configuration information of a first type of system broadcast message to the second type of station;

The sending configuration information includes at least one of the following information: a sending mode indication information, a time-frequency resource, a sending period, a sending number, an update period, a coded modulation mode, and a scrambling code information of the first type of system broadcast message.
The method of claim 1 or 2, wherein the method further comprises:

Sending a synchronization signal in a subordinate cell of the site, where the synchronization signal is used for synchronizing the user terminal with the site;

The synchronization signal is further configured to indicate to the user terminal at least one of the following information:

Whether the first type of site performs offloading transmission of system broadcast messages with the second type of site;

The cell identifier of the subordinate cell of the first type of site;

a downlink transmission beam of a first type of station to which the synchronization signal belongs;

An identifier of a subordinate cell of the second type of site that performs offloading of the system broadcast message with the first type of station;

A frequency point of a subordinate cell of the second type of station that performs offloading of the system broadcast message with the first type of station.
The method of claim 1 or 2 wherein:

The first type of system broadcast message includes at least one of the following information: an identifier, a system bandwidth, a cell selection information, and an access configuration information of a cell of the first type of site corresponding to the first type of system broadcast message. , common channel configuration information, dedicated channel configuration information, cell reselection related information, and early warning information.
The method of claim 1 or 2 wherein:

Sending the first type of system broadcast message to the second type of site, including:

Transmitting the first type of system broadcast message to the second type of site by using a direct interface with the second type of site, or forwarding the first type of system broadcast message to the second type by a core network side entity Site.
A method for transmitting a system broadcast message is applied to a second type of site, the method comprising:

Receiving a first type of system broadcast message in the case of performing system broadcast message offload transmission with the first type of site;

After receiving the first type of system broadcast message, the first type of system broadcast message is broadcasted in a subordinate cell of the site;

Wherein the first type of station uses an antenna transmitting beam having a beam characteristic; the second type of station uses a beam having a wider beam width than the first type of station to transmit, or uses a sector to transmit, or adopts a quasi The omnidirectional or omnidirectional transmission; the coverage of the subordinate cell of the second type of site overlaps with the coverage of the subordinate cell of the first type of site; the first type of system broadcast message carries the first type of site Cell-level public system information of subordinate cells.
The method of claim 9, wherein prior to receiving the first type of system broadcast message, the method further comprises determining whether to perform a system broadcast message offload transmission with the first type of station.
The method of claim 9 or 10 wherein:

Determine whether to perform system broadcast message offload transmission with the first type of site in any of the following ways:

Receiving configuration information of the high-level node, where the configuration information indicates that the system broadcast message of the cell of the first-type site is sent by the second-type site;

After receiving the request message that the first type of station performs the offload transmission on the system broadcast message of the cell of the first type of site, determining that the site has the capability of transmitting the system broadcast message of the cell of the subordinate cell of the first type of site;

The request message for performing offload transmission of the system broadcast message of the cell of the first type of site is sent to the first type of site.
The method of claim 9 or 10 wherein:

The first type of system broadcast message includes at least one of the following information: an identifier, a system bandwidth, a cell selection information, and an access configuration information of a cell of the first type of site corresponding to the first type of system broadcast message. , common channel configuration information, dedicated channel configuration information, cell reselection related information, and early warning information.
The method of claim 9 or 10 wherein:

The receiving the first type of system broadcast message includes: receiving the first type of system broadcast message by using a direct interface with the first type of site, or receiving the first type of system broadcast message by using a core network side entity.
The method of claim 9 or 10, wherein the method further comprises:

Obtaining transmission configuration information of the first type of system broadcast message;

The obtaining configuration information of the broadcast message of the first type of system includes obtaining, by using any one of the following methods:

Sending configuration information according to a predefined type of system broadcast message predefined by the system;

Receiving, by the first type of station, sending configuration information of the first type of system broadcast message;

The transmission configuration information of the first type of system broadcast message is determined autonomously.
The method of claim 9 or 10 wherein:

The sending configuration information of the first type of system broadcast message includes at least one of the following information: a sending mode indication information, a time-frequency resource, a sending period, a sending frequency, an update period, and a code modulation mode of the first type of system broadcast message. , scrambling code information.
The method of claim 9 or 10 wherein:

The broadcasting, in the subordinate cell of the local station, the first type of system broadcast message, including:

And transmitting, according to the sending configuration information of the first type of system broadcast message, the first type of system broadcast message in a subordinate cell of the local station.
The method of claim 16 wherein:

Transmitting, according to the sending configuration information of the broadcast message of the first type of system, the first type of system broadcast message in a subordinate cell of the local station, including transmitting, by using at least one of the following manners, the first type of system Broadcast message:

Transmitting, by the system pre-defined or the coded modulation mode indicated by the first type of station, the first type of system broadcast message on a time-frequency resource indicated by the system or the first type of station;

The first type system broadcast message is loaded on the data transmission resource of the second type site by using a system pre-defined or the code modulation mode indicated by the first type of station, and the scheduling indication information is sent to the terminal through the control channel. The scheduling indication information is used to indicate a specific time-frequency domain location of the first type of system broadcast message, and is scrambled by the specified scrambling code sequence;

Autonomously determining a transmission configuration of the first type of system broadcast message, and indicating the transmission configuration to a user terminal by using a control channel or a dedicated radio resource control RRC signaling; wherein the control The scheduling indication information used to indicate the sending configuration in the channel is scrambled by the specified scrambling code sequence;

When receiving the first type of system broadcast message request sent by the user terminal, the response message is returned, and the sending configuration information of the first type of system broadcast message is carried in the response message.
The method of claim 17 wherein:

The time domain resource of the first type of system broadcast message that is predefined by the system, the system pre-defined to send the time domain resource of the first type of system broadcast message, and the first type of site or the second class a timing relationship between the site synchronization signals; or a relationship between a time domain resource that sends the first type of system broadcast message and an identifier of the cell of the first type of site to which the first type of system broadcast message belongs;

The frequency domain resource of the first type of system broadcast message, which is predefined by the system, includes: the system pre-defines the frequency domain resource that sends the first type system broadcast message, and the The relationship between the cell identifiers of the first type of sites.
A method for transmitting a system broadcast message is applied to a user terminal, and the method includes:

Obtaining information about whether the system broadcast message is offloaded between the first type of site and the second type of site;

After determining that the system broadcast message is offloaded between the first type of station and the second type of station, receiving a first type of system broadcast message sent by the second type of station;

Wherein the first type of station uses an antenna transmitting beam having a beam characteristic; the second type of station uses a beam having a wider beam width than the first type of station to transmit, or uses a sector to transmit, or adopts a quasi The omnidirectional or omnidirectional transmission; the coverage of the subordinate cell of the second type of site overlaps with the coverage of the subordinate cell of the first type of site; the first type of system broadcast message carries the first type of site Cell-level public system information of subordinate cells.
The method of claim 19, wherein the method further comprises:

Receiving a second type of system broadcast message sent by the first type of site;

The second type of system broadcast message carries public system information related to the beam.
The method of claim 19 wherein:

And the information about whether to perform system broadcast message offload transmission between the first type of site and the second type of site, including:

Receiving a synchronization signal sent by the first type of station, and determining, according to the indication information carried in the synchronization signal, whether to perform system broadcast message offload transmission between the first type of station and the second type of station;

The synchronization signal is further configured to indicate to the user terminal at least one of the following information:

Whether the first type of site performs offloading transmission of system broadcast messages with the second type of site;

The cell identifier of the subordinate cell of the first type of site;

a downlink transmission beam of a first type of station to which the synchronization signal belongs;

An identifier of a subordinate cell of the second type of site that performs offloading of the system broadcast message with the first type of station;

A frequency point of a subordinate cell of the second type of station that performs offloading of the system broadcast message with the first type of station.
The method of claim 19 wherein:

The first type of system broadcast message includes at least one of the following information: an identifier, a system bandwidth, a cell selection information, and an access configuration information of a cell of the first type of site corresponding to the first type of system broadcast message. , common channel configuration information, dedicated channel configuration information, cell reselection related information, and early warning information.
The method of claim 21 wherein:

Receiving the first type of system broadcast message sent by the second type of site, including:

Searching for and accessing the subordinate cell of the second type of site according to the acquired frequency and identifier of the subordinate cell of the second type of site, and receiving the first type of system broadcast sent by the second type of site after the access is successful Message.
The method of claim 19 wherein:

Receiving the first type of system broadcast message sent by the second type of site, including:

And acquiring, by the sending configuration information, the first type of system broadcast message sent by the second type of station according to the sending configuration information.
The method of claim 24 wherein:

The obtaining the sending configuration information of the broadcast message of the first type of system includes acquiring, by using any one of the following methods:

Determining, according to the system predefined, the sending configuration information of the first type of system broadcast message;

Des scrambling the scheduling indication information sent by the second type of station in the control channel by using the scrambling code sequence corresponding to the subordinate cell identifier of the first type of station, and acquiring the sending configuration information of the first type system broadcast message;

Receiving the second type of site control channel or the dedicated radio resource control RRC signaling, and acquiring the transmission configuration information, where the scheduling indication information for indicating the sending configuration in the control channel is scrambled by using the specified scrambling code sequence ;

Sending the first type of system broadcast message request information to the second type of site, receiving a response message replied by the second type of site, and acquiring, by using the response message, the sending configuration of the first type of system broadcast message The information of the first type of system broadcast message request information includes the identifier of the cell of the first type of site to which the first type of system broadcast message to be requested by the user terminal belongs.
A method as claimed in claim 24 or 25, wherein:

The sending configuration information of the first type of system broadcast message includes at least one of the following information: a sending mode indication information, a time-frequency resource, a sending period, a sending frequency, an update period, and a code modulation mode of the first type of system broadcast message. , scrambling code information.
The method of claim 20 wherein:

Receiving the second type of system broadcast message sent by the first type of station, including:

Determining, according to the received first-class system broadcast message, that the cell of the first-type site is suitable for selection, and after accessing the cell that is suitable for selection, receiving the first-type site to be transmitted in a beam direction where the user terminal is located The second type of system broadcasts messages.
A system for transmitting broadcast messages to a first type of site, including:

a first sending module, configured to send a first type of system broadcast message to the second type of site in a case of performing system broadcast message offload transmission with the second type of site;

Wherein the first type of station uses an antenna transmitting beam having a beam characteristic; the second type of station uses a beam having a wider beam width than the first type of station to transmit, or uses a sector to transmit, or adopts a quasi The omnidirectional or omnidirectional transmission; the coverage of the subordinate cell of the second type of site overlaps with the coverage of the subordinate cell of the first type of site; the first type of system broadcast message carries the first type of site Cell-level public system information of subordinate cells.
The apparatus of claim 28, further comprising:

The analysis module is configured to determine whether to perform system broadcast message offload transmission with the second type of site.
The apparatus of claim 28 or 29, further comprising:

a second sending module, configured to send a second type of system broadcast message corresponding to the beam in a beam direction corresponding to the user terminal;

The second type of system broadcast message carries public system information related to the beam;

The common system information related to the beam includes at least one of the following information: beam tracking related information, common channel configuration information, and dedicated channel configuration information.
The device of claim 28 or 29, wherein:

The analyzing module is configured to determine whether to perform system broadcast message offload transmission with the second type of site, including determining by using any one of the modes:

Receiving configuration information of the high-level node, where the configuration information indicates that the system broadcast message of the cell of the first-type site is sent by the second-type site;

Receiving a request message for offloading the system broadcast message of the cell of the first type of site to the second type of site;

Sending, to the second type of station, a request message for performing a offload transmission on the system broadcast message of the cell of the first type of site, and receiving a system that is returned by the second type of site to support sending the cell of the first type of site The response message for the broadcast message.
The apparatus of claim 28 or 29, further comprising:

a third sending module, configured to send, to the second type of station, sending configuration information of a first type of system broadcast message;

The sending configuration information includes at least one of the following information: a sending mode indication information, a time-frequency resource, a sending period, a sending number, an update period, a coded modulation mode, and a scrambling code information of the first type of system broadcast message.
The apparatus of claim 28 or 29, further comprising:

a fourth sending module, configured to send a synchronization signal in a subordinate cell of the local station, where the synchronization signal is used for synchronizing the user terminal with the local station;

The synchronization signal is further configured to indicate to the user terminal at least one of the following information:

Whether the first type of site performs offloading transmission of system broadcast messages with the second type of site;

The cell identifier of the subordinate cell of the first type of site;

a downlink transmission beam of a first type of station to which the synchronization signal belongs;

An identifier of a subordinate cell of the second type of site that performs offloading of the system broadcast message with the first type of station;

A frequency point of a subordinate cell of the second type of station that performs offloading of the system broadcast message with the first type of station.
The device of claim 28 or 29, wherein:

The first type of system broadcast message includes at least one of the following information: an identifier, a system bandwidth, a cell selection information, and an access configuration information of a cell of the first type of site corresponding to the first type of system broadcast message. , common channel configuration information, dedicated channel configuration information, cell reselection related information, and early warning information.
The device of claim 28 or 29, wherein:

The first sending module is configured to send the first type of system broadcast message to the second type of site, including:

Transmitting the first type of system broadcast message to the second type of site by using a direct interface with the second type of site, or forwarding the first type of system broadcast message to the second type by a core network side entity Site.
A system for transmitting broadcast messages to a second type of site, including:

a receiving module, configured to receive a first type of system broadcast message after performing a system broadcast message offload transmission with the first type of site;

a sending module, configured to broadcast the first type of system broadcast message in a subordinate cell of the local station after receiving the first type of system broadcast message;

Wherein the first type of station uses an antenna transmitting beam having a beam characteristic; the second type of station uses a beam having a wider beam width than the first type of station to transmit, or uses a sector to transmit, or adopts a quasi The omnidirectional or omnidirectional transmission; the coverage of the subordinate cell of the second type of site overlaps with the coverage of the subordinate cell of the first type of site; the first type of system broadcast message carries the first type of site Cell-level public system information of subordinate cells.
The device of claim 36, wherein the device further comprises:

The judging module is configured to determine whether to perform system broadcast message offload transmission with the first type of station.
The apparatus of claim 36 or 37 wherein:

The determining module is configured to determine whether to perform system broadcast message offload transmission with the first type of site, including determining by using any one of the following manners:

Receiving configuration information of the high-level node, where the configuration information indicates that the system broadcast message of the cell of the first-type site is sent by the second-type site;

After receiving the request message that the first type of station performs the offload transmission on the system broadcast message of the cell of the first type of site, determining that the site has the capability of transmitting the system broadcast message of the cell of the subordinate cell of the first type of site;

The request message for performing offload transmission of the system broadcast message of the cell of the first type of site is sent to the first type of site.
The apparatus of claim 36 or 37 wherein:

The first type of system broadcast message includes at least one of the following information: an identifier, a system bandwidth, and a cell selection of a subordinate cell of the first type of site corresponding to the first type of system broadcast message. Select information, access configuration information, common channel configuration information, dedicated channel configuration information, cell reselection related information, and early warning information.
The apparatus of claim 36 or 37 wherein:

The receiving module, configured to receive the first type of system broadcast message, includes: receiving, by using a direct interface with the first type of site, the first type of system broadcast message, or receiving, by the core network side entity, the first Class system broadcast messages.
The apparatus of claim 36 or 37 wherein:

The determining module is further configured to acquire sending configuration information of the first type of system broadcast message;

The determining module acquires the sending configuration information of the broadcast message of the first type of system, including acquiring by using any one of the following methods:

Sending configuration information according to a predefined type of system broadcast message predefined by the system;

Receiving, by the first type of station, sending configuration information of the first type of system broadcast message;

The transmission configuration information of the first type of system broadcast message is determined autonomously.
The apparatus of claim 36 or 37 wherein:

The sending configuration information of the first type of system broadcast message includes at least one of the following information: a sending mode indication information, a time-frequency resource, a sending period, a sending frequency, an update period, and a code modulation mode of the first type of system broadcast message. , scrambling code information.
The apparatus of claim 36 or 37 wherein:

The sending module is configured to broadcast and send the first type of system broadcast message in a subordinate cell of the local station, including:

And transmitting, according to the sending configuration information of the first type of system broadcast message, the first type of system broadcast message in a subordinate cell of the local station.
The apparatus of claim 43 wherein:

The sending module is configured to broadcast and send the first type of system broadcast message in a subordinate cell of the local station according to the sending configuration information of the first type of system broadcast message, including at least one of the following manners: The first type of system broadcast message:

Transmitting, by the system pre-defined or the coded modulation mode indicated by the first type of station, the first type of system broadcast message on a time-frequency resource indicated by the system or the first type of station;

The first type system broadcast message is loaded on the data transmission resource of the second type site by using a system pre-defined or the code modulation mode indicated by the first type of station, and the scheduling indication information is sent to the terminal through the control channel. The scheduling indication information is used to indicate a specific time-frequency domain location of the first type of system broadcast message, and is scrambled by the specified scrambling code sequence;

Autonomously determining a transmission configuration of the first type of system broadcast message, and indicating the transmission configuration to a user terminal by using a control channel or a dedicated radio resource control RRC signaling, where the control channel is used to indicate the sending configuration The scheduling indication information is scrambled with the specified scrambling code sequence;

When receiving the first type of system broadcast message request sent by the user terminal, the response message is returned, and the sending configuration information of the first type of system broadcast message is carried in the response message.
The apparatus of claim 44 wherein:

The time domain resource of the first type of system broadcast message that is predefined by the system, the system pre-defined to send the time domain resource of the first type of system broadcast message, and the first type of site or the second class a timing relationship between the site synchronization signals; or a relationship between a time domain resource that sends the first type of system broadcast message and an identifier of the cell of the first type of site to which the first type of system broadcast message belongs;

The frequency domain resource of the first type of system broadcast message, which is predefined by the system, includes: the system pre-defines the frequency domain resource that sends the first type system broadcast message, and the The relationship between the cell identifiers of the first type of sites.
A system for transmitting broadcast messages to a user terminal, comprising:

The information obtaining module is configured to obtain information about whether the system broadcast message is distributed and transmitted between the first type of site and the second type of site;

The first receiving module is configured to receive the first type of system broadcast message sent by the second type of station after determining that the system broadcast message is offloaded between the first type of station and the second type of station;

Wherein the first type of station uses an antenna transmitting beam having a beam characteristic; the second type of station uses a beam having a wider beam width than the first type of station to transmit, or uses a sector to transmit, or adopts a quasi The omnidirectional or omnidirectional transmission; the coverage of the subordinate cell of the second type of site overlaps with the coverage of the subordinate cell of the first type of site; the first type of system broadcast message carries the first type of site Cell-level public system information of subordinate cells.
The apparatus of claim 46, further comprising:

a second receiving module, configured to receive a second type of system broadcast message sent by the first type of station;

The second type of system broadcast message carries public system information related to the beam.
The apparatus of claim 46 wherein:

The information obtaining module is configured to obtain information about whether the system broadcast message is transmitted and distributed between the first type of site and the second type of site, including:

Receiving a synchronization signal sent by the first type of station, and determining, according to the indication information carried in the synchronization signal, whether to perform system broadcast message offload transmission between the first type of station and the second type of station;

The synchronization signal is further configured to indicate to the user terminal at least one of the following information:

Whether the first type of site performs offloading transmission of system broadcast messages with the second type of site;

The cell identifier of the subordinate cell of the first type of site;

a downlink transmission beam of a first type of station to which the synchronization signal belongs;

An identifier of a subordinate cell of the second type of site that performs offloading of the system broadcast message with the first type of station;

A frequency point of a subordinate cell of the second type of station that performs offloading of the system broadcast message with the first type of station.
The apparatus of claim 46 wherein:

The first type of system broadcast message includes at least one of the following information: an identifier, a system bandwidth, a cell selection information, and an access configuration information of a cell of the first type of site corresponding to the first type of system broadcast message. , common channel configuration information, dedicated channel configuration information, cell reselection related information, and early warning information.
The apparatus of claim 48 wherein:

The first receiving module is configured to receive the first type of system broadcast message sent by the second type of station, including:

Searching for and accessing the subordinate cell of the second type of site according to the acquired frequency and identifier of the subordinate cell of the second type of site, and receiving the first type of system broadcast sent by the second type of site after the access is successful Message.
The apparatus of claim 46 wherein:

The first receiving module is configured to receive the first type of system broadcast message sent by the second type of station, including:

And acquiring, by the sending configuration information, the first type of system broadcast message sent by the second type of station according to the sending configuration information.
The apparatus of claim 51 wherein:

The first receiving module is configured to obtain the sending configuration information of the broadcast message of the first type of system, including acquiring by using any one of the following methods:

Determining, according to the system predefined, the sending configuration information of the first type of system broadcast message;

Des scrambling the scheduling indication information sent by the second type of station in the control channel by using the scrambling code sequence corresponding to the subordinate cell identifier of the first type of station, and acquiring the sending configuration information of the first type system broadcast message;

Receiving the second type of site control channel or the dedicated radio resource control RRC signaling, and acquiring the transmission configuration information, where the scheduling indication information for indicating the sending configuration in the control channel is scrambled by using the specified scrambling code sequence ;

Sending the first type of system broadcast message request information to the second type of site, receiving a response message replied by the second type of site, and acquiring, by using the response message, the sending configuration of the first type of system broadcast message The information of the first type of system broadcast message request information includes the identifier of the cell of the first type of site to which the first type of system broadcast message to be requested by the user terminal belongs.
A device according to claim 51 or 52, wherein:

The sending configuration information of the first type of system broadcast message includes at least one of the following information: a sending mode indication information, a time-frequency resource, a sending period, a sending frequency, an update period, and a code modulation mode of the first type of system broadcast message. , scrambling code information.
The apparatus of claim 47 wherein:

The second receiving module is configured to receive the second type of system broadcast message sent by the first type of station, including:

Determining, according to the received first type system broadcast message, that the subordinate cell of the first type of site is suitable And selecting, after accessing the cell that is suitable for selection, receiving a second type of system broadcast message that is sent by the first type of site in a beam direction where the user terminal is located.