WO2017076352A1

WO2017076352A1 - Beamforming-based system broadcast message transmission method, device and system

Info

Publication number: WO2017076352A1
Application number: PCT/CN2016/104695
Authority: WO
Inventors: 刘星; 刘文豪; 毕峰; 王乔锋; 郁光辉
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-11-06
Filing date: 2016-11-04
Publication date: 2017-05-11
Also published as: CN106686729A

Abstract

Provided in an embodiment of the invention are a beamforming-based system broadcast message transmission method, device and system. The method comprises: transmitting, by a base station, first type system broadcast messages in respective beam directions, wherein the first type system broadcast messages comprise information required to instruct terminals in the respective beam directions to select and access subordinate cells of the base station; receiving, by the base station, second type system broadcast message request indication information transmitted by the terminals according to the first type system broadcast messages; and transmitting, by the base station, and according to the second type system broadcast message request indication information, second type system broadcast messages in the beam directions corresponding to the terminals.

Description

Beam-based system broadcast message transmission method, device and system

Technical field

The present invention relates to a high frequency communication system, and more particularly to a beam based system broadcast message transmission method, apparatus and system for high frequency communication.

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 to 3GHz. The spectrum resources are extremely tight and cannot meet the needs of future wireless communications.

In future wireless communication, 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 easily absorbed by oxygen and has a large impact on rain attenuation, which seriously affects the coverage performance of high-frequency communication systems. In order to ensure an approximate SINR in the coverage of high-frequency communication and LTE systems, it is necessary to ensure the antenna gain of 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 the cost of equipment, the transmission capability of high-frequency stations will be limited, and it is difficult to achieve simultaneous transmission of omnidirectional multiple beams. In addition, from the perspective of interference, simultaneous transmission of omnidirectional multiple beams is also difficult to avoid interference between adjacent beams. Therefore, each beam tends to use time-division transmission, or packet time-division transmission (that is, the beam is divided into several groups, each group of beams are simultaneously transmitted); for each beam direction, the beam can only occupy the system bandwidth for the above-mentioned time-division transmission mode. Part of the time domain resource, in order to Maintaining 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, the design method based on the LTE system broadcast message period is sent to meet the directions. The access requirements of the terminal may occur, and the omnidirectional coverage of the system broadcast message must be implemented. The communication station needs to repeatedly send the same system broadcast message in each beam direction. For the communication station, there is also an "absolute overhead of the system broadcast message. "The problem is getting bigger."

Summary of the invention

Embodiments of the present invention provide a beam-based system broadcast message transmission method, apparatus, and system, to at least solve the technical problem of how to reduce the "absolute overhead" of a system broadcast message.

According to an embodiment of the present invention, a beam-based system broadcast message transmission method is provided, including:

The base station sends the first type of system broadcast message in all the beam directions, where the first type of system broadcast message includes information required to indicate to the terminal in each beam direction and to access the subordinate cell of the base station;

Receiving, by the base station receiving terminal, the second type system broadcast message request indication information according to the received first type system broadcast message;

The base station sends a second type system broadcast message in a beam direction corresponding to the terminal according to the second type system broadcast message request indication information.

Optionally, the base station separately sends the first type of system broadcast message in all the beam directions according to the predefined time-frequency domain resource allocation manner, where the predefined time-frequency domain resource allocation manner includes at least one of the following manners. :

Manner 1: Different beam direction groups are time-divisionally transmitted, wherein the different beam direction groups are time-divisionally transmitted, and the beam direction transmissions belonging to different beam direction groups occupy different time domain resources, and each beam in the same beam direction group occupies the same time domain resource. ;

Manner 2: Different beam direction group frequency division transmission, wherein the different beam direction group frequency division transmits beam direction transmissions belonging to different beam direction groups occupy different frequency domain resources, the same beam Each beam in the direction group occupies the same frequency domain resource.

Optionally, the base station separately sends the first type of system broadcast message in all beam directions, including:

The base station separately sends the first type of system broadcast message in a time-frequency resource corresponding to each beam direction, where the time-frequency resource used by the first type of system broadcast message is determined according to at least one of the following manners:

The first type of system broadcast message occupies a fixed time-frequency resource;

The time-frequency resource occupied by the first type of system broadcast message is dynamically scheduled, and is indicated by the control channel of the subframe in which the first type of system broadcast message is located to the terminal to indicate that the first type of system broadcast message is occupied. Time-frequency resource location;

Part of the information in the first type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.

Optionally, the information required for selecting and accessing the subordinate cell of the base station includes one or more of the following:

Cell selection information;

Access configuration information;

Downstream system bandwidth;

System frame number;

Cell identification

Upstream center frequency point;

Upstream and downlink time slot ratio;

Maximum uplink transmit power;

Public land mobile communication network (PLMN) identity;

Uplink transmission resource information of the dedicated indication sequence;

Uplink transmission resource information of the dedicated indication signal;

The cell selection information is used by the terminal to determine whether the cell of the base station is suitable for selection; the access configuration information is used to indicate, to the terminal, a configuration required to access a cell of the base station parameter.

Optionally, before the receiving, by the base station, the second type of system broadcast message request indication information sent by the terminal, the method further includes:

The base station sends inquiry information to the terminal, wherein the inquiry information is used to query the terminal whether the terminal needs to receive the second type system broadcast message.

Optionally, the query information is sent by means of a radio resource control RRC message, and/or a paging message.

Optionally, the second type of system broadcast message request indication information includes: displaying, or implicitly indicating, the terminal in the direction of the beam to the base station, and the terminal existing in the beam direction needs to receive the second type of system. Broadcast message.

Optionally, the second type of system broadcasts message request indication information, including at least one of the following forms:

a preamble sequence received by the base station in a random access procedure of the terminal;

Receiving, by the base station, a dedicated RRC message sent by the terminal;

The base station receives a dedicated indication sequence sent by the terminal, or a dedicated indication signal.

Optionally, the base station sends, according to the second type of system broadcast message request indication information, a second type of system broadcast message in a beam direction corresponding to the terminal, including:

The base station acquires a beam direction in which the terminal is located from the second type of system broadcast message request indication information, and sends a second type system broadcast message in a beam direction in which the terminal is located.

Optionally, the base station acquires a beam direction where the terminal is located by using at least one of the following manners:

The base station acquires index information of a beam direction of the terminal by reading the content of the second type of system broadcast message request indication information;

The base station determines, by using the time-frequency resource occupied by the second type of system broadcast message request indication information, the beam direction of the terminal;

The base station determines, by using the sequence of the second type of system broadcast message request indication information, the beam direction in which the terminal is located.

Optionally, the second type of system broadcast message is used to indicate, to a terminal that has selected and accessed the subordinate cell of the base station, cell level system information required for normal operation in the network.

Optionally, the cell level system information includes one or more of the following information: channel configuration information, cell reselection information, early warning information, and beam tracking information;

The beam tracking information is used to indicate, to the beam subordinate terminal, information of one or more beams adjacent to the beam, to assist the terminal to perform optimal downlink beam reselection.

Optionally, the beam tracking information comprises one or more of the following information: an index of one or more adjacent beams, a time-frequency domain position of the beam identification signal, and a sequence used by the beam identification signal.

Optionally, when the base station sends the second type of system broadcast message in the beam direction corresponding to the terminal, the used time-frequency resource is in the time-frequency resource corresponding to the beam direction corresponding to the terminal, and is as follows: At least one of the ways to determine:

The second type of system broadcast message occupies a fixed time-frequency resource;

The time-frequency resource occupied by the second type of system broadcast message is dynamically scheduled, and the time-frequency resource location of the broadcast message indicating the second type system is indicated by the control channel of the subframe in which the second type system broadcast message is located. ;

Part of the information in the second type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.

Optionally, the time-frequency resource location occupied by the second type of system broadcast message is indicated to the terminal by at least one of the following manners:

1) broadcasting a message indication through the first type of system;

2) indicated by a dedicated RRC message;

3) pre-configuring the time-frequency domain location occupied by the second type of system broadcast message;

4) Predetermining a calculation rule or algorithm of the spectrum resource when the second type of system broadcast message is predefined;

5) Include time-frequency domain resource information of the second type of system broadcast message in a control channel of the subframe in which the second type system broadcast message is located;

6) Include the time-frequency domain location of the second type of system broadcast message in the uplink random access response message.

According to an embodiment of the present invention, another beam-based system broadcast message transmission method is further provided, including:

Receiving, by the terminal, a first type of system broadcast message sent by the base station, where the first type of system broadcast message includes information required for selecting and accessing a cell of the base station;

Sending, by the terminal, the second type of system broadcast message request indication information according to the information required for selecting and accessing the subordinate cell of the base station;

The terminal receives a second type of system broadcast message sent by the base station.

Optionally, the information required for selecting and accessing the subordinate cell of the base station includes one or more of the following information:

Cell selection information;

Access configuration information;

Downstream system bandwidth;

System frame number;

Cell identification

Upstream center frequency point;

Upstream and downlink time slot ratio;

Maximum uplink transmit power;

Uplink transmission resource information of the dedicated indication sequence;

Uplink transmission resource information of the dedicated indication signal;

The cell selection information is used by the terminal to determine whether the subordinate cell of the base station is allowed to be selected, and the access configuration information is used by the terminal to acquire configuration parameters required for accessing the subordinate cell of the base station.

Optionally, the resource location occupied by the first type of system broadcast message includes at least one of the following forms:

The time-frequency resource occupied by the first type of system broadcast message is dynamically scheduled, and when the first type system broadcast message is indicated to the terminal by using a control channel of the subframe in which the first type system broadcast message is located Frequency resource location;

Optionally, before the sending, by the terminal, the second type of system broadcast message request indication information, the method further includes:

The terminal receives the base station to send the inquiry information, where the inquiry information is used to query the terminal whether it is necessary to receive the second type system broadcast message.

Optionally, the query information is sent by means of an RRC message and/or a paging message.

Optionally, the second type of system broadcast message request indication information includes that the terminal displays or implicitly indicates to the base station that the terminal exists in the beam direction, and the terminal needs to receive the second type of system broadcast. Message.

Optionally, the manner in which the second type of system broadcast message request indication information is sent includes at least one of the following manners:

The terminal indicates by using a preamble sequence sent by the random access procedure to the base station;

The terminal indicates to the base station by using a dedicated RRC message;

The terminal indicates to the base station through a dedicated indication sequence or a dedicated indication signal.

Optionally, the terminal feeds back the wave to the base station by using at least one of the following manners Beam direction, including:

The terminal sends the index information of the beam direction in the second type of system broadcast message request indication information to the base station;

The terminal uses the time-frequency domain location corresponding to the direction of the beam, and uses the time-frequency domain location of the second-class system broadcast message request indication information to indicate the beam direction where the terminal is located;

The terminal indicates, by the sequence of the second type of system broadcast message request indication information, the direction of the beam in which the base station is located, where different sequences correspond to different beam directions.

Optionally, the second type of system broadcast message is used to acquire cell level system information required for normal operation in the network to a terminal that has selected and accessed the subordinate cell of the base station, where the cell level system information is used. The method includes one or more of the following information: configuration information of the downlink control channel, neighboring area information, early warning information, and beam tracking information;

The beam tracking information is used to assist the terminal to perform optimal downlink beam reselection.

Optionally, the time-frequency resource occupied by the second type of system broadcast message transmission is within the time-frequency resource of the beam transmission to which the terminal belongs, and is determined according to at least one of the following manners:

The time-frequency resource occupied by the second type of system broadcast message is dynamically scheduled, and the terminal learns the time-frequency resource location of the second type system broadcast message in a specific manner;

Optionally, the terminal learns, by at least one of the following manners, a time-frequency resource location occupied by the second type of system broadcast message:

1) reading in the first type of system broadcast message;

2) by receiving a dedicated RRC signaling indication;

3) by pre-configuring the time-frequency domain location occupied by the second type of system broadcast message;

4) a calculation rule or algorithm for the spectrum resource when the second type of system broadcast message is predefined;

5) by detecting a control channel on each subframe of the beam transmission period;

6) The uplink random access response message is received, where the uplink random access response message includes time-frequency domain location information of the second type of system broadcast message.

According to another embodiment of the present invention, a beam-based system broadcast message transmission apparatus is provided, including:

The first sending module is configured to separately send the first type of system broadcast message in all beam directions; wherein the first type of system broadcast message includes, to the terminal in each beam direction, the selection and access to the subordinate cell of the base station. information;

a first receiving module, configured to receive, by the receiving terminal, a second type of system broadcast message request indication information that is sent according to the received first type system broadcast message;

The second sending module is configured to send, according to the second type of system broadcast message request indication information, a second type of system broadcast message in a beam direction corresponding to the terminal.

Optionally, the first sending module is specifically configured to separately send a first type of system broadcast message in all beam directions according to a predefined time-frequency domain resource allocation manner, where the predefined time-frequency domain resource allocation is performed. The method includes at least one of the following ways:

Manner 2: Different beam direction group frequency division transmission, wherein different beam direction group frequency divisions transmit beam direction transmissions belonging to different beam direction groups occupy different frequency domain resources, and each beam in the same beam direction group occupies the same frequency domain Resources.

Optionally, when the first type of system broadcast message is sent according to a time-frequency domain resource allocation manner occupied by each beam direction, the time-frequency resource used by the first type of system broadcast message is at least A certain:

Optionally, the information required for selecting and accessing a subordinate cell of the base station includes one or more of the following:

Cell selection information;

Access configuration information;

Downstream system bandwidth;

System frame number;

Cell identification

Upstream center frequency point;

Upstream and downlink time slot ratio;

Maximum uplink transmit power;

Public land mobile communication network (PLMN) identity;

Uplink transmission resource information of the dedicated indication sequence;

Uplink transmission resource information of the dedicated indication signal;

The cell selection information is used by the terminal to determine whether the cell of the base station is suitable for selection; the access configuration information is used to indicate, to the terminal, configuration parameters required for accessing a cell of the base station.

Optionally, the device further includes:

The second sending module is configured to send the query information to the terminal before the second type of system broadcast message request indication information sent by the receiving terminal, where the query information is used to query the terminal whether the terminal needs to receive the second type of system broadcast Message.

Optionally, the second type of system broadcast message request indication information includes: indicating to the base station that the terminal exists in the direction of the beam, or the terminal that exists in the beam direction needs to receive the second type of system broadcast message. .

a preamble sequence received during a random access procedure of the terminal;

Receiving a dedicated RRC message sent by the terminal;

Receiving a dedicated indication sequence sent by the terminal, or a dedicated indication signal.

Optionally, the second sending module includes:

An acquiring unit, configured to acquire, from the second type of system broadcast message request indication information, a beam direction in which the terminal is located;

And a sending unit, configured to send a second type of system broadcast message in a beam direction in which the terminal is located.

Optionally, the acquiring unit acquires a beam direction where the terminal is located by using at least one of the following manners:

Obtaining index information of a beam direction in which the terminal is located by reading content of the second type of system broadcast message request indication information;

Determining a beam direction in which the terminal is located by using a time-frequency resource occupied by the second type of system broadcast message request indication information;

Determining the sequence by using the sequence of the second type of system broadcast message request indication information Indicates the beam direction in which the terminal is located.

Optionally, the second type of system broadcast message is used to indicate, to a terminal that has selected and accesses a subordinate cell of the base station, cell level system information required for normal operation in the network.

Optionally, when the second sending module sends the second type of system broadcast message in the beam direction corresponding to the terminal, the time-frequency resource used is determined according to at least one of the following manners:

1) broadcasting a message indication through the first type of system;

2) indicated by a dedicated RRC message;

According to another embodiment of the present invention, another beam-based system broadcast message transmission apparatus is further provided, including:

a second receiving module, configured to receive a first type of system broadcast message sent by the base station, where the first type of system broadcast message includes information required for selecting and accessing a cell of the base station;

The third sending module is configured to send the second type of system broadcast message request indication information according to the information required for selecting and accessing the subordinate cell of the base station;

The third receiving module is configured to receive the second type of system broadcast message sent by the base station.

Cell selection information;

Access configuration information;

Downstream system bandwidth;

System frame number;

Cell identification

Upstream center frequency point;

Upstream and downlink time slot ratio;

Maximum uplink transmit power;

Uplink transmission resource information of the dedicated indication sequence;

Uplink transmission resource information of the dedicated indication signal;

Optionally, the device further includes:

The fourth receiving module is configured to: before receiving the second type system broadcast message request indication information, the receiving base station sends the query information, wherein the query information is used to query the terminal whether it is necessary to receive the second type system broadcast message.

The terminal indicates to the base station by using a dedicated RRC message;

Optionally, the third sending module feeds back the beam direction of the base station by using at least one of the following manners, including:

The terminal uses the time-frequency domain location corresponding to the beam direction, and uses the second transmission The class system broadcast message request indicates the time-frequency domain location of the information to indicate the beam direction in which the terminal is located;

1) reading in the first type of system broadcast message;

2) by receiving a dedicated RRC signaling indication;

In accordance with another embodiment of the present invention, a beam-based system broadcast message transmission system is also provided, including the apparatus described above.

According to still another embodiment of the present invention, a storage medium is also provided. The storage medium is arranged to store program code for performing the above method.

The embodiment provided by the present invention divides system broadcast messages into two categories: the first type of system broadcast message includes configuration information necessary for terminal cell selection and random access, and is transmitted in all beam directions; the second type of system broadcast message includes Other cell common control information, the base station transmits in part of the beam direction according to the indication information of the subordinate terminal. The on-demand transmission of the second type of system broadcast messages is realized by designing the indication information in different situations. Under the premise of ensuring that the terminal can obtain the system broadcast message in a certain manner, the signaling overhead of the system broadcast message full beam period is reduced.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1(a) is a flowchart of a beam-based system broadcast message transmission method according to an embodiment of the present invention;

1(b) is a flowchart of another beam-based system broadcast message transmission method according to an embodiment of the present invention;

2 is a schematic diagram of application scenarios corresponding to the first, second, and third embodiments of the present invention;

3 is a schematic flowchart of a corresponding embodiment of the present invention;

4 is a schematic diagram of relationship between transmission timings of respective beams according to Embodiment 1 of the present invention;

FIG. 5 is a schematic diagram of another process corresponding to the first embodiment of the present invention; FIG.

6 is a schematic flowchart of a corresponding embodiment of the present invention;

FIG. 7 is a schematic diagram of timing relationship of each beam transmission according to Embodiment 2 of the present invention;

8 is a schematic flowchart of a corresponding embodiment of the third embodiment of the present invention;

FIG. 9 is a schematic diagram of relationship between transmission timings of respective beams according to Embodiment 3 of the present invention; FIG.

10 is a schematic flowchart of a second embodiment of the fourth embodiment of the present invention;

11 is a schematic flowchart of a fourth embodiment of the present invention;

12 is a schematic flowchart of a corresponding embodiment of the fifth embodiment of the present invention;

13 is a schematic flowchart of a corresponding embodiment of the present invention;

FIG. 14(a) is a structural diagram of a beam-based system broadcast message transmission apparatus according to an embodiment of the present invention;

FIG. 14(b) is a structural diagram of another beam-based system broadcast message transmission apparatus according to an embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

FIG. 1(a) is a flowchart of a beam-based system broadcast message transmission method according to an embodiment of the present invention. The method shown in Figure 1(a) includes:

Step 101: The base station separately sends a first type of system broadcast message in all beam directions, where the first type of system broadcast message includes information required to indicate selection and access to the subordinate cell of the base station to the terminal in each beam direction. ;

Step 102: The base station receiving the second type of system broadcast message request indication information transmitted by the terminal according to the received first type system broadcast message;

Step 103: The base station sends a second type system broadcast message in a beam direction corresponding to the terminal according to the second type system broadcast message request indication information.

The first type of system broadcast message is sent according to a time-frequency domain resource allocation manner occupied by each beam direction, wherein the time-frequency domain resource allocation manner includes at least one of the following manners:

The time-frequency resource used by the first type of system broadcast message is determined according to at least one of the following manners: when the first type of system broadcast message is sent according to the time-frequency domain resource allocation mode occupied by each beam direction transmission:

The information required for selecting and accessing the subordinate cell of the base station includes one or more of the following:

Cell selection information;

Access configuration information;

Downstream system bandwidth;

System frame number;

Cell identification

Upstream center frequency point;

Upstream and downlink time slot ratio;

Maximum uplink transmit power;

Public land mobile communication network (PLMN) identity;

Uplink transmission resource information of the dedicated indication sequence;

Uplink transmission resource information of the dedicated indication signal;

Before the receiving, by the base station, the second type of system broadcast message request indication information sent by the terminal, the method further includes:

The query information is sent by means of a radio resource control RRC message and/or a paging message.

The second type of system broadcast message request indication information includes: displaying or implicitly indicating to the base station that the terminal exists in the direction of the beam, and the terminal existing in the beam direction needs to receive the second type system broadcast message. .

The second type of system broadcast message request indication information includes at least one of the following forms:

Receiving, by the base station, a dedicated RRC message sent by the terminal;

The base station sends the second type of system broadcast message in the beam direction corresponding to the terminal according to the second type of system broadcast message request indication information, including:

The base station acquires a beam direction where the terminal is located by using at least one of the following manners:

The second type of system broadcast message is used to indicate, to a terminal that has selected and accessed the subordinate cell of the base station, cell level system information required for normal operation in the network.

The cell level system information includes one or more of the following information: channel configuration information, cell reselection information, early warning information, and beam tracking information;

The beam tracking information includes one or more of the following information: an index of one or more adjacent beams, a time-frequency domain position of the beam identification signal, and a sequence used by the beam identification signal.

When the base station sends the second type system broadcast message in the beam direction corresponding to the terminal, the time-frequency resource used is determined according to at least one of the following manners:

The time-frequency resource location occupied by the second type of system broadcast message is indicated to the terminal by at least one of the following methods:

1) broadcasting a message indication through the first type of system;

2) indicated by a dedicated RRC message;

The method provided by the present invention divides system broadcast messages into two categories: the first type of system broadcast message includes terminal cell selection and configuration information necessary for random access, and is transmitted in all beam directions; the second type of system broadcast message The other cell common control information is included, and the base station transmits in part of the beam direction according to the indication information of the subordinate terminal. The on-demand transmission of the second type of system broadcast messages is realized by designing the indication information in different situations. Under the premise of ensuring that the terminal can obtain the system broadcast message in a certain manner, the signaling overhead of the system broadcast message full beam period is reduced.

FIG. 1(b) is a flowchart of another beam-based system broadcast message transmission method according to an embodiment of the present invention. The method shown in Figure 1(b) includes:

Step 201: The terminal receives a first type of system broadcast message sent by the base station, where the first type of system broadcast message includes information required for selecting and accessing a cell of the base station;

Step 202: The terminal sends a second type of system broadcast message request indication information according to the information required to select and access the subordinate cell of the base station;

Step 203: The terminal receives a second type of system broadcast message sent by the base station.

The information required for selecting and accessing the subordinate cell of the base station includes one or more of the following information:

Cell selection information;

Access configuration information;

Downstream system bandwidth;

System frame number;

Cell identification

Upstream center frequency point;

Upstream and downlink time slot ratio;

Maximum uplink transmit power;

Uplink transmission resource information of the dedicated indication sequence;

Uplink transmission resource information of the dedicated indication signal;

The resource location occupied by the first type of system broadcast message includes at least one of the following forms:

Part of the information in the first type of system broadcast message occupies a fixed time-frequency resource, and the other part The time-frequency resources occupied by the sub-information are dynamically scheduled.

The method further includes: before the terminal sends the second type of system broadcast message request indication information, the method further includes:

The inquiry information is sent by means of an RRC message and/or a paging message.

The second type of system broadcast message request indication information includes that the terminal displays or implicitly indicates to the base station that the terminal exists in the beam direction, and the terminal needs to receive the second type system broadcast message.

The method for sending the second type of system broadcast message request indication information includes at least one of the following methods:

The terminal indicates to the base station by using a dedicated RRC message;

The terminal feedbacks the direction of the beam to the base station by using at least one of the following manners, including:

The second type of system broadcast message is used to acquire cell level system information required for normal operation in the network to a terminal that has selected and accessed the subordinate cell of the base station, where the cell level system information includes the following One or more of the information: configuration information of the downlink control channel, Neighbor information, early warning information and beam tracking information;

The time-frequency resource occupied by the second type of system broadcast message transmission is within the time-frequency resource of the beam transmission to which the terminal belongs, and is determined according to at least one of the following manners:

The terminal obtains the time-frequency resource location occupied by the broadcast message of the second type system by at least one of the following manners:

1) reading in the first type of system broadcast message;

2) by receiving a dedicated RRC signaling indication;

The embodiment provided by the present invention divides system broadcast messages into two categories: the first type of system broadcast message includes configuration information necessary for terminal cell selection and random access, and is transmitted in all beam directions; the second type of system broadcast message includes Other cell common control information, the base station transmits in part of the beam direction according to the indication information of the subordinate terminal. Through the design of the instruction information in different situations, The on-demand transmission of the second type of system broadcast messages is implemented. Under the premise of ensuring that the terminal can obtain the system broadcast message in a certain manner, the signaling overhead of the system broadcast message full beam period is reduced.

The method provided by the embodiment of the present invention is described below:

The base station separately transmits the first type of system broadcast message in all beam directions according to a predefined manner, and refers to a time-frequency domain resource allocation manner occupied by each beam direction transmission, including at least one of the following methods:

The beam direction transmissions of different beam direction groups occupy different time domain resources, and the beams in the same beam direction group can occupy the same time domain resource transmission; M beams, the base station needs to transmit in all M beam directions to cover the entire cell range. In different beam direction group time division transmission modes, the M beams are divided into N groups, and each beam direction in each beam direction group can be The same time domain resource is multiplexed, that is, the first type of system broadcast message is transmitted at the same time, and the occupied frequency domain resources are not limited, and may be the same or different; the beam directions belonging to different beam direction groups occupy different transmission times. In particular, for the case where the beam is not grouped, it can be considered as M=N, that is, each beam group contains only one beam direction, which is a special case of the grouping scheme, in which all beams are time-divisionally transmitted; another special case, ie All beam directions are transmitted simultaneously. In this case, all M beams are grouped into one group. All beam directions can be transmitted simultaneously. The occupied frequency resources are still not limited, but when the beam transmission occupies the same frequency (ie, the same frequency) At this time, different beam transmissions can be distinguished by different sequences or by scrambling information through different scrambling codes.

Different beam direction groups are frequency-divisionally transmitted, that is, beam direction transmissions belonging to different beam direction groups occupy different frequency domain resources, and each beam in the same beam direction group can occupy the same frequency domain resource transmission. Similar to the time-division transmission, in the different beam direction group frequency division transmission mode, it is still assumed that the M beams are divided into N groups, and each beam direction in each beam direction group can be multiplexed with the same frequency domain resource, that is, the same use The frequency resource transmits the first type of system broadcast message, and the occupied time domain resources are not limited, and may be the same or different; the beam directions belonging to different beam direction groups Occupy different frequency resource emissions. In particular, for the case where the beam is not grouped, it can be considered as M=N, that is, each beam group contains only one beam direction, which is a special case of the grouping scheme, in which all beam frequency divisions are transmitted; another special case, That is, all beam directions are transmitted in the same frequency. In this case, all M beams are grouped into one group. All beam directions can occupy the same frequency resource. The occupied time domain resources are still not restricted. In this case, different sequences can be used. Or distinguishing different beam emissions by means of scrambling information through different scrambling codes.

The allocation method of the time-frequency resources occupied by each beam transmission may also be a combination of two modes, that is, distinguishing the transmissions in different beam directions by two dimensions in the time-frequency domain.

Embodiment 1

As shown in FIG. 2, in an application scenario corresponding to the embodiment of the present invention, the cell 1 of the high-frequency base station BS covers the target area through 7 beams (B0-B6), and there are two new terminals UE1 that are covered by the cell1 in the cell1. The UE2 is located in the direction of the transmit beam B1 and the transmit beam B3 of the BS, respectively. As shown in the flow of the embodiment shown in FIG. 3, the specific process of newly entering the terminal access network to receive the system broadcast message is as follows:

Step 1: The BS sends the first type of system broadcast message in a certain period T1 in all beam directions;

As shown in FIG. 4, the BS transmits the first type of system broadcast message on all the subordinate beams B0-B6 according to the period T1, and each beam is transmitted in time, each beam occupies 1 subframe, that is, the BS is in the beam during the subframe 0. A first type of system broadcast message is sent on B0, a first type of system broadcast message is sent on beam B1 during subframe 1, and so on;

The BS also sends a synchronization signal in each beam direction for the UE to perform downlink synchronization, so that the first type of system broadcast message sent by the BS in the corresponding beam direction can be further received. The synchronization signal carries information for identifying the beam at the same time. For example, each beam transmits a synchronization signal of a different sequence. The UE determines the downlink transmission of the received beam according to the detected sequence while implementing downlink synchronization with the BS. There are many similar methods for beam identification using different synchronization signals, for example, different beams are distinguished according to the time-frequency domain position of the synchronization signal. There is no key description here.

The first type of system broadcast message includes a subordinate UE for cell selection, and a parameter configuration necessary for random access (for example, an MIB in an existing LTE system, and a cell selection related cell in SIB1, and a random access configuration in SIB2). The UE for receiving the message determines whether the cell is selected as the target serving cell, and may further perform random access to the cell 1 according to the random access configuration parameter.

Specifically, the information in the existing system broadcast message of the LTE system is taken as an example to describe the specific content of the first type of system broadcast message. For other systems, the first type of system broadcast message includes the terminal cell selection and the access network related configuration. Information can be. Can include:

In the MIB: downlink bandwidth dl-Bandwidth, PHICH configuration information phich-Config, system frame number systemFrameNumber.

Cell selection related cells in SIB1:

Content in cellAccessRelatedInfo: PLMN identifier list plmn-IdentityList, tracking area code trackingAreaCode, cell identifier cellIdentity, cell disable information cellBarred, intra-frequency reselection intraFreqReselection, csg-Indication, csg-Identity;

Content in cellSelectionInfo: cell minimum access level q-RxLevMin, minimum access RSRP value offset q-RxLevMinOffset, UE transmit power maximum p-Max, frequency bandwidth indication freqBandIndicator.

Access related configuration in SIB2: PRACH and RACH configuration information:

In the PRACH-Config information elements: high-speed moving ZC sequence cyclic shift selection information highSpeedFlag, PRACH time domain resource configuration information prach-ConfigIndex, PRACH frequency domain resource configuration information prach-FreqOffset, root sequence logical index rootSequenceIndex, sequence offset zeroCorrelationZoneConfig;

In the RACH-ConfigCommon information element: the contention resolution timer mac-ContentionResolutionTimer, the maximum number of retransmissions of the MSG3 maxHARQ-Msg3Tx. When the group B is selected, the power required by the UE needs to be several DBs, messagePowerOffsetGroupB, when the group A is selected, the MSG3 Maximum message size messageSizeGroupA, Preamble total NumberOfRA-Preambles, when the UE retransmits the preamble, the power step is increased by the powerRampingStep, the base station expects the target power preambleInitialReceivedTargetPower, the preamble group A configuration information preamblesGroupAConfig, the Preamble maximum number of transmissions preambleTransMax, and the random access response window length ra-ResponseWindowSize, The number of preambles included in group A is sizeOfRA-PreamblesGroupA;

In the RACH-ConfigDedicated information element: in the non-contention access mode, the time-frequency position index ra-PRACH-MaskIndex, in the non-contention access mode, the code sequence index ra-PreambleIndex sent by the UE;

In this embodiment, the first type of system broadcast message occupies a fixed time-frequency domain resource, and the UE that completes the downlink synchronization can find the first type of system broadcast message loaded on the fixed location.

Step 2: The BS transmits a synchronization signal and a first type of system broadcast message in the direction of the beam B1 at the time of the subframe 1;

The UE1 performs correlation processing on the downlink synchronization signal by using a series of sequences and the received synchronization signal to obtain a sequence used by the received synchronization signal, thereby determining that the received downlink transmission is from the beam B1, and at the same time. The downlink synchronization process with the BS is also completed.

Further, the UE1 finds the first type of system broadcast message in the fixed time-frequency domain location, and the UE1 first determines whether the cell1 is a selectable cell according to the cell selection information of the BS, and the determination result is selectable. The random access configuration information is further obtained for subsequent random access procedure.

The process of UE2 is the same as that of UE1, and details are not described herein again.

Step 3: The BS receives the second type of system broadcast message request indication information sent by the UE (in this embodiment, the UE indicates to the BS by sending the preamble);

Here, the UE1 is taken as an example. The UE1 selects a preamble sequence in a certain preamble sequence resource according to the random access configuration information, and sends the preamble sequence to the BS on the uplink transmission resource specified by the BS.

It is worth noting that the selection process of the preamble sequence requires the UE to pass the preamble sequence. The column indicates the direction of the downlink beam B1 in which it is located. For example, the system pre-defines the preamble sequence corresponding to the beam B1. In this case, the UE transmits the specific preamble sequence to indicate to the BS the direction of the beam. There are still many ways to indicate the direction of the beam in which the UE is located by using the preamble sequence. For example, it is also possible to indicate different beams to the BS by using the preamble sequence to transmit different time domain resources or frequency domain resources. Focus on the description.

Step 4: After receiving the preamble sequence from the UE, the BS completes the random access procedure with the UE according to the existing LTE random access manner.

Step 5: In addition to continuing the random access procedure with the UE, it is also known in which beam directions the UE exists, and in these directions, a second type of system broadcast message needs to be further provided.

As shown in FIG. 4, in this embodiment, the second type of system broadcast message needs to be further provided in the direction of the beams B1 and B3. Therefore, the BS further sends the second type to the transmission resources of the subsequent B1 and B3 with a certain period T2. The system broadcasts a message.

The second type of system broadcast message includes other cell common control information (such as one or more of SIB3-SIB17 of the existing LTE system) other than the cell selection information and the access configuration information; The terminal that is in the subordinate cell of the base station further indicates necessary parameters required for normal operation in the network, including but not limited to one or more of the following information: configuration information of the downlink control channel, neighboring area information, and early warning Information, etc.

In this embodiment, the second type of system broadcast message occupies a predefined fixed time-frequency resource; therefore, the UE can find the second type of system broadcast message on the fixed time-frequency resource.

In addition to configuring the second type of system broadcast message in a fixed time-frequency resource, the time-frequency resource occupied by the second-class system broadcast message may be dynamically scheduled, and the subframe in which the second-class system broadcasts the message is located. The control channel indicates a specific time-frequency resource location of the second type of system broadcast message;

Alternatively, part of the information in the second type of system broadcast message (such as SIB3-SIB8) occupies a fixed time-frequency resource, and another part of the information (such as SIB9-SIB17) occupies a time-frequency resource that is dynamically adjusted. Degree.

It is worth noting that in the other beam directions (B0, B2, B4-B6), the second type of system broadcast message will not be sent.

Note: The operations described in steps 4 and 5 can be interchanged (as shown in Figure 5). After receiving the preamble sent by the UE, the BS can choose to execute the system broadcast message on demand and send it first. The class system broadcast message is sent to the terminal in the beam direction indicated by the UE, and then the random access procedure triggered by the preamble is processed to complete the random access of the UE to the BS.

Embodiment 2

The present embodiment corresponds to the application scenario shown in FIG. 2, in which the cell 1 of the high-frequency base station BS covers the target area through 7 beams (B0-B6), and two terminals UE1 and UE2 that are covered by the cell1 in the cell1 are located respectively. The transmit beam B1 of the BS and the direction of the transmit beam B3. As shown in the flow of the embodiment shown in FIG. 6, the new incoming terminal does not have an uplink transmission requirement, that is, the uplink random access procedure is not performed, and the process in which the UE indicates the direction of the beam to the BS through the dedicated signal and receives the broadcast message of the second type system is described as follows: :

As shown in FIG. 7, the BS transmits the first type of system broadcast message on all the subordinate beams B0-B6 according to the period T1, and each beam is transmitted in time division, and each beam occupies 1 subframe, that is, the BS is in the beam during the subframe 0. A first type of system broadcast message is sent on B0, a first type of system broadcast message is sent on beam B1 during subframe 1, and so on;

The BS also sends a synchronization signal in each beam direction for the UE to perform downlink synchronization, so that the first type of system broadcast message sent by the BS in the corresponding beam direction can be further received.

The first type of system broadcast message includes a subordinate UE for cell selection, and a parameter configuration necessary for random access (for example, MIB, SIB1, and SIB2 in the existing LTE system), and the UE that receives the message determines whether the cell is selected as the target. Serving the cell, and may further perform random access to cell1 according to the random access configuration parameter. In addition, in the first type of system broadcast message, Includes dedicated indication signaling, or uplink transmit resources for dedicated indication signals.

The first type of system broadcast message also carries information for identifying the beam, for example, by using a beam to transmit the first type of system broadcast message, and scrambling through different sequences, and the UE determines the scrambled when decoding the first type of system broadcast message. A sequence to determine which beam of the received downlink transmission.

In this embodiment, part of the information in the first type of system broadcast message occupies a fixed time-frequency domain resource, and the UE that completes the downlink synchronization for such information can be found in the fixed time-frequency domain location; the time-frequency occupied by another part of the information The resource is dynamically scheduled, that is, the time-frequency resource occupied by the transmission is not fixed. At this time, the UE can further acquire the time-frequency domain resource location that carries the part of the information by reading the corresponding second-class system broadcast message request indication information. . For example, the MIB in the first type of system broadcast message occupies a fixed time-frequency domain resource, and the time-frequency domain resources of the SIB1 and the SIB2 are dynamically scheduled, and are indicated to the terminal by corresponding information.

Step 2: UE1 receives the synchronization signal sent by the BS in the B1 direction and the first type of system broadcast message in the direction of the beam B1 at the time of the subframe 1;

UE1 detects the synchronization signal, implements downlink synchronization with the BS, and further finds the MIB information of the fixed time-frequency domain location, descrambles the MIB information through different scrambling code sequences, and identifies the beam direction corresponding to the successfully descrambled sequence. For the beam direction B1 in which it is located.

Further, UE1 finds the dynamically scheduled SIB1, SIB2, for example, the information content of the MIB, and obtains the time-frequency domain locations of SIB1 and SIB2.

Step 3: The UE sends a second type of system broadcast message request indication information (in the embodiment, the UE indicates to the BS by sending a dedicated indication signal);

Here, UE1 is taken as an example for description. UE1 does not have an uplink transmission requirement at this time. Therefore, the random access procedure is not initiated temporarily, but it still hopes to further acquire the second type of system broadcast message. Therefore, UE1 passes the dedicated indication signal. Instructing the BS to further acquire the second type of system broadcast message, and the UE1 sends a dedicated indication signal according to the uplink transmission resource of the first type of system broadcast message, the dedicated indication signaling, or the dedicated indication signal.

It is worth noting that the UE not only indicates the requirement for acquiring the second type of system broadcast message through the dedicated indication signal, but also indicates the downlink beam direction B1 in which it is located by using the dedicated indication signal. For example, the system pre-defines the dedicated beam B1. The sequence used by the indication signal. At this time, the UE sends the specific dedicated indication signal sequence to indicate to the BS the direction of the beam in which it is located. There are still many ways to indicate the direction of the beam where the UE is located by using the transmission mode of the dedicated indication signal. For example, it is also possible to indicate different beams to the BS by using the dedicated indication signal to transmit the occupied time domain resource or the frequency domain resource. There is no key description here.

Step 4: After receiving the dedicated indication signal from the UE, the BS knows which beam directions exist in the UE, and further needs to provide the second type system broadcast message in these directions.

As shown in FIG. 7, in this embodiment, the second type of system broadcast message needs to be further provided in the direction of the beams B1 and B3. Therefore, the BS further sends the second type to the transmission resources of the subsequent B1 and B3 with a certain period T2. The system broadcasts a message.

The second type of system broadcast message includes other cell common control information (such as one or more of SIB3-SIB17 of the existing LTE system) other than the cell selection information and the access configuration information; The terminal that is in the subordinate cell of the base station further indicates necessary parameters required for normal operation in the network, including but not limited to one or more of the following information: configuration information of the downlink control channel, neighboring area information, and early warning information.

Embodiment 3

The embodiment corresponds to the application scenario shown in FIG. 2, the cell 1 of the high-frequency base station BS covers the target area by 7 beams (B0-B6), and the two link state terminals UE1 and UE2 are respectively located in the BS. Beam B1, in the direction of the transmit beam B3. As shown in the flow of the embodiment shown in FIG. 8, the process of requesting the link state UE to obtain the second type system broadcast message from the BS through dedicated RRC signaling is as follows:

Step 1: The BS sends the first type of system broadcast in a certain period T1 in all beam directions. Message

As shown in FIG. 9, the BS transmits the first type of system broadcast message on all the subordinate beams B0-B6 according to the period T1, and each beam is transmitted in time division, and each beam occupies the transmission time of one radio frame, that is, the BS is in the radio frame. Transmitting a first type of system broadcast message on beam B0, transmitting a first type of system broadcast message on beam B1 during radio frame 1, and so on;

The specific time-frequency resources occupied by the first type of system broadcast messages are dynamically scheduled. The real-time domain dimension: which subframe in the radio frame is specific, and the frequency domain dimension: on which RBs, it is not fixed. However, it will be indicated to the UE through the control channel of the first few symbols of each subframe.

The first type of system broadcast message includes a subordinate UE for cell selection, and a parameter configuration necessary for random access (for example, MIB, SIB1, and SIB2 in the existing LTE system), for determining an idle state terminal (idle UE) that receives the message. Whether the cell is selected as the target serving cell, and the random access to the cell 1 may be further performed according to the random access configuration parameter. The connected UE can also receive and read the first type of system broadcast message. Update the content of the first type of system broadcast message that was previously stored by itself. In this embodiment, UE1 and UE2 are both link state UEs.

Step 2: UE1 receives the first type of system broadcast message sent by the BS in the B1 direction in the direction of the beam B1 in the radio frame 1;

Since the time-frequency domain resource occupied by the first type of system broadcast message is dynamically scheduled, the UE1 detects the control channel of each subframe in the radio frame 1 (such as the physical downlink control channel PDCCH in the LTE system), and determines the subsequent data. Whether the first type of system broadcast message is carried in (such as the physical downlink shared channel PDSCH in the LTE system).

Step 3: The UE sends the second type of system broadcast message request indication information to further acquire the second type of system broadcast message (in the embodiment, the UE indicates to the BS by sending the dedicated RRC signaling);

Here, UE1 is taken as an example for description. UE1 generates dedicated RRC signaling, which is used to indicate to the BS that UE1 wants to acquire a second type of system broadcast message. Since UE1 is a link state terminal, BS The beam direction in which the UE1 is located is known. Therefore, the beam direction information does not need to be carried in the second type of system broadcast message request indication information.

Step 4: After receiving the dedicated RRC signaling from the UE, the BS knows that there is a requirement for the UE1 to receive the second type of system broadcast message, and therefore sends the second type of system broadcast message in the beam direction where the UE1 is located.

In this embodiment, the time-frequency resource occupied by the second type of system broadcast message is a predefined fixed resource. Therefore, when the receiving time of the subsequent second type system broadcast message arrives, the UE1 receives the second type of system broadcast message, and Complete the update process for system broadcast messages. As shown in FIG. 9, in this embodiment, the second type of system broadcast message needs to be further provided in the direction of the beams B1 and B3.

Embodiment 4

This embodiment describes the indication manner of the time-frequency domain resource occupied by the broadcast message of the second type system, and the corresponding method is applicable to the various situations described in Embodiments 1, 2, and 3.

Sub-example 1:

The first type of system broadcast message indicates that the first type of system broadcast message includes information and period information of the time-frequency domain resource for transmitting the second type system broadcast message on the same beam, if there is a terminal on the beam. Receiving the second type of system broadcast message, and sending the second type of system broadcast message request indication information to the BS, when the subsequent BS sends the second type of system broadcast message, the time-frequency domain resource indicated in the first type of system broadcast message is And periodically sending a second type of system broadcast message.

Sub-example 2:

As shown in FIG. 10, taking the process in Embodiment 3 as an example, step 4 is added to the sub-instruction to indicate to the UE, the location and the transmission period information of the time-frequency domain resource occupied by the second-class system broadcast message. The BS indicates by dedicated signaling when the UE requests acquisition from the BS through dedicated RRC signaling. When the second type of system broadcasts a message, the BS may send a second type of system broadcast message resource indication.

Sub-example 3:

The time-frequency domain resource location occupied by the second type of system broadcast message may also be fixedly configured in advance, that is, when the triggering BS transmits the second type system broadcast message in a certain beam direction, the BS according to the predefined time-frequency domain location. To send the message, the UE side also receives the message according to a predefined location. For example, the second type of system broadcast message is loaded on the middle 20 RBs of the subframe 5 of the radio frame in which the beam is located, at which time both the BS and the UE are aware of the configuration. This situation does not require additional signaling overhead to configure.

In this pre-configured manner, the transmission rule can be pre-configured, that is, which specific time-frequency domain resource is not given, but the transmission time frequency of the Nth beam after the UE feeds back the second-class system broadcast message request indication information. Within the resource, the specific time-frequency domain resources occupied by the broadcast messages of the second type of system are calculated by using certain algorithms/rules, and the related algorithms or rules are pre-defined, and the rules are known to both the UE and the BS, and Send and receive according to this rule.

Sub-embodiment 4:

The specific time-frequency resources occupied by the second type of system broadcast messages are dynamically scheduled. The real-time domain dimension: which subframe in the radio frame is specific, and the frequency domain dimension: on which RBs, it is not fixed. However, it will be indicated to the UE through the control channel of the first few symbols of each subframe.

Since the time-frequency domain resource occupied by the second type of system broadcast message is dynamically scheduled, the UE detects the control channel of each subframe in the beam transmission period (such as radio frame 1) (such as physical downlink control in the LTE system). The channel PDCCH) determines whether the second type of system broadcast message is carried in the following data (such as the physical downlink shared channel PDSCH in the LTE system).

Sub-embodiment 5:

As shown in FIG. 11, in the solution described in the first embodiment, when the resources occupied by the broadcast message of the second type system are not fixedly configured, the uplink random access response sent by the BS to the UE in the random access process may be adopted. The message (Msg2) carries the transmission resource information of the second type of system broadcast message (step 4). That is, the BS receives the preamble, and when the random access procedure is triggered, it also knows that the UE in the direction of the beam B1 needs to further provide the second type of system broadcast message. Further, the BS replies to the uplink random access response message (Msg2) in the direction of the beam B1, and carries the time-frequency resource location information occupied by the second type of system broadcast message, in addition to the normal random access procedure. The UE may further receive the second type of system broadcast message at a specific location indicated in the subsequent Msg2.

Embodiment 5

As shown in FIG. 2, in an application scenario corresponding to the embodiment of the present invention, the cell 1 of the high-frequency base station BS covers the target area through 7 beams (B0-B6), and two terminals UE1 and UE2 respectively reside in the cell1. On the transmit beam B1 of the BS, the transmit beam B3. UE1 and UE2 are currently in the RRC idle state. In this embodiment, the base station sends a paging message to trigger the terminal to send the second type of system broadcast message request indication information, as shown in the flowchart of the embodiment shown in FIG.

Step 1: The idle state terminal resides in the subordinate cell of the BS, and is respectively located on the transmit beam B1 and the transmit beam B3 of the BS;

Step 3: UE1 and UE2 respectively receive a paging message sent to themselves at the specified paging message location, and it is known in the paging message that the high frequency station BS asks whether it needs to receive the second type system broadcast message; The UE also sends a second type of system broadcast message request indication letter. Time-frequency domain resources.

Step 4: UE1 needs to update the second type of system broadcast message at this time, so the second type system broadcast message request indication signal is sent to the BS at the specified location; UE2 does not need to update the content of the second system broadcast message at this time, and therefore does not reply. Any indication information;

Step 5: After receiving the indication signal from the UE1, the BS sends a second type of system broadcast message in the beam direction B1 where the UE1 is located.

The definition of the time-frequency domain location of the second type of system broadcast message may be in any one of the embodiments.

It should be noted that, in this embodiment, after receiving the indication signal fed back by the UE1, the BS determines to send a second type of system broadcast message in the beam direction where the UE1 is located, or the BS may receive more than a certain amount in a certain beam direction. When the number of indication signals is sent, the second type of system broadcast message is sent and received in the direction of the beam. If the number of received system broadcast message request indication information is lower than a predefined threshold, the requests are ignored and the second type of system broadcast message is not sent in the beam direction.

Embodiment 6

As shown in FIG. 2, in an application scenario corresponding to the embodiment of the present invention, the cell 1 of the high-frequency base station BS covers the target area through 7 beams (B0-B6), and two terminals UE1 and UE2 respectively reside in the cell1. On the transmit beam B1 of the BS, the transmit beam B3. UE1 and UE2 are currently in the RRC link state. In this embodiment, the RRC message is sent by the base station to trigger the terminal to send the second type of system broadcast message request indication information, as shown in the flowchart of the embodiment shown in FIG.

Step 1: The link state terminals UE1 and UE2 are respectively located on the transmit beam B1 and the transmit beam B3 of the BS.

Step 2: The UE may receive the first type of system broadcast message sent by the BS in the specified beam direction periodically during the normal communication process. For example, UE1 receives the synchronization of the BS in the B1 direction in the direction of the beam B1 at the time of the subframe 1. Signal and first class system broadcast message; UE2 and The process of UE1 is the same and will not be described here.

Step 3: UE1 and UE2 respectively receive an RRC message sent by the BS, and ask whether it is necessary to update the second type system broadcast message.

Step 4: UE1 needs to update the second type of system broadcast message at this time, so the second type system broadcast message request message (RRC message) is sent to the BS at the specified location; UE2 does not need to update the content of the second system broadcast message at this time. Therefore do not reply to any instructions;

Step 5: After receiving the second type system broadcast message request indication message from the UE1, the BS sends a second type system broadcast message in the beam direction B1 where the UE1 is located.

It should be noted that, in this embodiment, after receiving the indication message fed back by the UE1, the BS determines to send a second type of system broadcast message in the beam direction where the UE1 is located, or the BS may receive more than a certain amount in a certain beam direction. When the number of indication messages is sent, the second type of system broadcast message is sent and received in the direction of the beam. If the number of received system broadcast message request indication messages of the second type is lower than a predefined threshold, the requests are ignored and the second type of system broadcast message is not sent in the beam direction.

FIG. 14(a) is a structural diagram of a beam-based system broadcast message transmission apparatus according to an embodiment of the present invention. The device shown in Figure 14(a) includes:

The first sending module 1401 is configured to separately send the first type of system broadcast message in all beam directions, where the first type of system broadcast message includes the indication to the terminal in each beam direction to select and access the subordinate cell of the base station. Information;

The first receiving module 1402 is configured to receive, by the receiving terminal, a second type of system broadcast message request indication information that is transmitted according to the received first type system broadcast message;

The second sending module 1403 is configured to send, according to the second type of system broadcast message request indication information, a second type of system broadcast message in a beam direction corresponding to the terminal.

The first sending module is specifically configured to send a first type of system broadcast message in all beam directions according to a predefined time-frequency domain resource allocation manner, where the predefined time-frequency domain resource allocation manner includes At least one of the following ways:

The time-frequency resource used by the first type of system broadcast message is determined according to at least one of the following manners, when the first type of system broadcast message is sent according to the time-frequency domain resource allocation manner occupied by each beam direction transmission. :

The information required for selecting and accessing a subordinate cell of the base station includes one or more of the following:

Cell selection information;

Access configuration information;

Downstream system bandwidth;

System frame number;

Cell identification

Upstream center frequency point;

Upstream and downlink time slot ratio;

Maximum uplink transmit power;

Public land mobile communication network (PLMN) identity;

Uplink transmission resource information of the dedicated indication sequence;

Uplink transmission resource information of the dedicated indication signal;

Optionally, the device further includes:

The second type of system broadcast message request indication information includes a terminal that is displayed to the base station or implicitly indicating that the beam direction exists, and the terminal that exists in the beam direction needs to receive the second type system broadcast message.

a preamble sequence received during a random access procedure of the terminal;

Receiving a dedicated RRC message sent by the terminal;

The second sending module includes:

The acquiring unit acquires a beam direction where the terminal is located by using at least one of the following manners:

Determining, by the sequence of the second type of system broadcast message request indication information, the beam direction in which the terminal is located.

The second type of system broadcast message is used to indicate, to a terminal that has selected and accesses a subordinate cell of the base station, cell level system information required for normal operation in the network.

When the second sending module sends the second type of system broadcast message in the beam direction corresponding to the terminal, the time-frequency resource used is determined according to at least one of the following manners:

Part of the information in the second type of system broadcast message occupies a fixed time-frequency resource, and the other part The time-frequency resources occupied by the sub-information are dynamically scheduled.

1) broadcasting a message indication through the first type of system;

2) indicated by a dedicated RRC message;

The device embodiment provided by the present invention divides system broadcast messages into two categories: the first type of system broadcast message includes terminal cell selection and configuration information necessary for random access, and is transmitted in all beam directions; the second type of system broadcast message The other cell common control information is included, and the base station transmits in part of the beam direction according to the indication information of the subordinate terminal. The on-demand transmission of the second type of system broadcast messages is realized by designing the indication information in different situations. Under the premise of ensuring that the terminal can obtain the system broadcast message in a certain manner, the signaling overhead of the system broadcast message full beam period is reduced.

FIG. 14(b) is a structural diagram of another beam-based system broadcast message transmission apparatus according to an embodiment of the present invention. The device shown in Figure 14 (b) includes:

The second receiving module 1501 is configured to receive a first type of system broadcast message sent by the base station, where the first type of system broadcast message includes information required for selecting and accessing a cell of the base station;

The third sending module 1502 is configured to send, according to the information required for selecting and accessing the subordinate cell of the base station, the second type of system broadcast message request indication information;

The third receiving module 1503 is configured to receive a second type of system broadcast message sent by the base station.

Cell selection information;

Access configuration information;

Downstream system bandwidth;

System frame number;

Cell identification

Upstream center frequency point;

Upstream and downlink time slot ratio;

Maximum uplink transmit power;

Uplink transmission resource information of the dedicated indication sequence;

Uplink transmission resource information of the dedicated indication signal;

Optionally, the device further includes:

a fourth receiving module, configured to send a second type of system broadcast message request indication information, The receiving base station transmits inquiry information, wherein the inquiry information is used to query the terminal whether it is necessary to receive the second type system broadcast message.

The terminal indicates to the base station by using a dedicated RRC message;

The third sending module feeds back the beam direction of the base station to the base station by using at least one of the following manners, including:

The second type of system broadcast message is used to acquire cell level system information required for normal operation in the network to a terminal that has selected and accessed the subordinate cell of the base station, where the cell level system information includes the following One or more of the information: configuration information of the downlink control channel, neighboring area information, early warning information, and beam tracking information;

The beam tracking information includes one or more of the following information: adjacent one or The index of multiple beams, the time-frequency domain location of the beam identification signal, and the sequence used by the beam identification signal.

1) reading in the first type of system broadcast message;

2) by receiving a dedicated RRC signaling indication;

In addition, an embodiment of the present invention provides a beam-based system broadcast message transmission system, including the apparatus as described in any one of FIG. 14 (a) and the apparatus as described in any one of FIG. 14 (b).

The system embodiment provided by the present invention divides system broadcast messages into two categories: the first type of system broadcast message includes terminal cell selection and configuration information necessary for random access, and is transmitted in all beam directions; the second type of system broadcast message The other cell common control information is included, and the base station transmits in part of the beam direction according to the indication information of the subordinate terminal. The on-demand transmission of the second type of system broadcast messages is realized by designing the indication information in different situations. Under the premise of ensuring that the terminal can obtain the system broadcast message in a certain manner, the signaling overhead of the system broadcast message full beam period is reduced.

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium, such as on a corresponding hardware platform (eg, The system, device, device, device, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, the invention is not limited to any specific combination of hardware and software.

The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Obviously, those skilled in the art will appreciate that the various modules or steps of the present invention described above can be implemented with a general purpose computing device, which can be centralized on a single computing device, or Distributed over a network of computing devices, optionally, they may be implemented in program code executable by the computing device, such that they may be stored in the storage device for execution by the computing device, and in some cases The steps shown or described may be performed in a different order than that herein, or they may be separately fabricated into individual integrated circuit modules, or a plurality of the modules or steps may be implemented as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

As described above, a beam-based system broadcast message transmission method, apparatus, and system provided by the embodiments of the present invention have the following beneficial effects: the system broadcast messages are classified into two categories: the first type of system broadcast messages include terminal cell selection and randomization. Accessing the necessary configuration information and transmitting in all beam directions; the second type of system broadcast message includes other cell common control information, and the base station transmits in part of the beam direction according to the indication information of the subordinate terminal. The on-demand transmission of the second type of system broadcast messages is realized by designing the indication information in different situations. Under the premise of ensuring that the terminal can obtain the system broadcast message in a certain manner, the signaling overhead of the system broadcast message full beam period is reduced.

Claims

A beam-based system broadcast message transmission method includes:

The base station sends the first type of system broadcast message in all the beam directions, where the first type of system broadcast message includes information required to indicate to the terminal in each beam direction and to access the subordinate cell of the base station;

Receiving, by the base station receiving terminal, the second type system broadcast message request indication information according to the received first type system broadcast message;

The base station sends a second type system broadcast message in a beam direction corresponding to the terminal according to the second type system broadcast message request indication information.
The method according to claim 1, wherein the base station separately transmits a first type of system broadcast message in all beam directions according to a predefined time-frequency domain resource allocation manner, wherein the predefined time-frequency domain resource allocation The method includes at least one of the following ways:

Manner 1: Different beam direction groups are time-divisionally transmitted, wherein the different beam direction groups are time-divisionally transmitted, and the beam direction transmissions belonging to different beam direction groups occupy different time domain resources, and each beam in the same beam direction group occupies the same time domain resource. ;

Manner 2: Different beam direction group frequency division transmission, wherein different beam direction group frequency divisions transmit beam direction transmissions belonging to different beam direction groups occupy different frequency domain resources, and each beam in the same beam direction group occupies the same frequency domain Resources.
The method according to claim 1 or 2, wherein the base station separately transmits the first type of system broadcast message in all beam directions, including:

The base station separately sends the first type of system broadcast message in a time-frequency resource corresponding to each beam direction, where the time-frequency resource used by the first type of system broadcast message is determined according to at least one of the following manners:

The first type of system broadcast message occupies a fixed time-frequency resource;

The time-frequency resource occupied by the first type of system broadcast message is dynamically scheduled, and is indicated by the control channel of the subframe in which the first type of system broadcast message is located to the terminal to indicate that the first type of system broadcast message is occupied. Time-frequency resource location;

Part of the information in the first type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
The method according to claim 1, wherein the information required for selecting and accessing the subordinate cell of the base station comprises one or more of the following:

Cell selection information;

Access configuration information;

Downstream system bandwidth;

System frame number;

Cell identification

Upstream center frequency point;

Upstream and downlink time slot ratio;

Maximum uplink transmit power;

Public land mobile communication network PLMN identity;

Uplink transmission resource information of the dedicated indication sequence;

Uplink transmission resource information of the dedicated indication signal;

The cell selection information is used by the terminal to determine whether the cell of the base station is suitable for selection; the access configuration information is used to indicate, to the terminal, a configuration required to access a cell of the base station parameter.
The method of claim 1, wherein the method further comprises: before the receiving, by the base station, the second type of system broadcast message request indication information sent by the terminal:

The base station sends inquiry information to the terminal, wherein the inquiry information is used to query the terminal whether the terminal needs to receive the second type system broadcast message.
The method of claim 5, wherein the challenge information is transmitted by means of a radio resource control RRC message and/or a paging message.
The method of claim 1 wherein said second type of system broadcasts a consumer The information request indication information includes displaying or implicitly indicating to the base station that the terminal exists in the direction of the beam, and the terminal existing in the beam direction needs to receive the second type system broadcast message.
The method of claim 7, wherein the second type of system broadcast message request indication information comprises at least one of the following forms:

a preamble sequence received by the base station in a random access procedure of the terminal;

Receiving, by the base station, a dedicated RRC message sent by the terminal;

The base station receives a dedicated indication sequence sent by the terminal, or a dedicated indication signal.
The method according to claim 1, wherein the base station sends the second type of system broadcast message in the beam direction corresponding to the terminal according to the second type of system broadcast message request indication information, including:

The base station acquires a beam direction in which the terminal is located from the second type of system broadcast message request indication information, and sends a second type system broadcast message in a beam direction in which the terminal is located.
The method according to claim 9, wherein the base station acquires a beam direction in which the terminal is located by at least one of the following manners:

The base station acquires index information of a beam direction of the terminal by reading the content of the second type of system broadcast message request indication information;

The base station determines, by using the time-frequency resource occupied by the second type of system broadcast message request indication information, the beam direction of the terminal;

The base station determines, by using the sequence of the second type of system broadcast message request indication information, the beam direction in which the terminal is located.
The method according to claim 1, wherein the second type of system broadcast message is used to indicate, to a terminal that has selected and accessed the subordinate cell of the base station, cell level system information required for normal operation in the network.
The method of claim 11 wherein said cell level system information Including one or more of the following information: channel configuration information, cell reselection information, early warning information, and beam tracking information;

The beam tracking information is used to indicate, to the beam subordinate terminal, information of one or more beams adjacent to the beam, to assist the terminal to perform optimal downlink beam reselection.
The method of claim 12, wherein the beam tracking information comprises one or more of the following: an index of adjacent one or more beams, a time-frequency domain position of the beam identification signal, and a beam identification signal. The sequence used.
The method according to claim 1, wherein when the base station transmits the second type of system broadcast message in the beam direction corresponding to the terminal, the time-frequency resource used is corresponding to the beam direction corresponding to the terminal. Within the frequency resource, and determine at least one of the following ways:

The second type of system broadcast message occupies a fixed time-frequency resource;

The time-frequency resource occupied by the second type of system broadcast message is dynamically scheduled, and the time-frequency resource location of the broadcast message indicating the second type system is indicated by the control channel of the subframe in which the second type system broadcast message is located. ;

Part of the information in the second type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
The method according to claim 14, wherein the time-frequency resource location occupied by the second type of system broadcast message is indicated to the terminal by at least one of:

1) broadcasting a message indication through the first type of system;

2) indicated by a dedicated RRC message;

3) pre-configuring the time-frequency domain location occupied by the second type of system broadcast message;

4) Predetermining a calculation rule or algorithm of the spectrum resource when the second type of system broadcast message is predefined;

5) Include time-frequency domain resource information of the second type of system broadcast message in a control channel of the subframe in which the second type system broadcast message is located;

6) Include the time-frequency domain location of the second type of system broadcast message in the uplink random access response message.
A beam-based system broadcast message transmission method includes:

Receiving, by the terminal, a first type of system broadcast message sent by the base station, where the first type of system broadcast message includes information required for selecting and accessing a cell of the base station;

Sending, by the terminal, the second type of system broadcast message request indication information according to the information required for selecting and accessing the subordinate cell of the base station;

The terminal receives a second type of system broadcast message sent by the base station.
The method according to claim 16, wherein said selecting and accessing information required by said base station subordinate cell comprises one or more of the following information:

Cell selection information;

Access configuration information;

Downstream system bandwidth;

System frame number;

Cell identification

Upstream center frequency point;

Upstream and downlink time slot ratio;

Maximum uplink transmit power;

Uplink transmission resource information of the dedicated indication sequence;

Uplink transmission resource information of the dedicated indication signal;

The cell selection information is used by the terminal to determine whether the subordinate cell of the base station is allowed to be selected, and the access configuration information is used by the terminal to acquire configuration parameters required for accessing the subordinate cell of the base station.
The method of claim 16, wherein the resource location occupied by the first type of system broadcast message comprises at least one of the following forms:

The first type of system broadcast message occupies a fixed time-frequency resource;

The time-frequency resource occupied by the first type of system broadcast message is dynamically scheduled, and when the first type system broadcast message is indicated to the terminal by using a control channel of the subframe in which the first type system broadcast message is located Frequency resource location;

Part of the information in the first type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
The method according to claim 16, wherein before the terminal sends the second type of system broadcast message request indication information, the method further includes:

The terminal receives the base station to send the inquiry information, where the inquiry information is used to query the terminal whether it is necessary to receive the second type system broadcast message.
The method of claim 19, wherein the query information is sent by means of an RRC message and/or a paging message.
The method according to claim 16, wherein the second type of system broadcast message request indication information comprises, for the terminal, displaying or implicitly indicating to the base station that the terminal exists in the beam direction, and the terminal Need to receive the second type of system broadcast message.
The method according to claim 21, wherein the second type of system broadcast message request indication information is sent in at least one of the following manners:

The terminal indicates by using a preamble sequence sent by the random access procedure to the base station;

The terminal indicates to the base station by using a dedicated RRC message;

The terminal indicates to the base station through a dedicated indication sequence or a dedicated indication signal.
The method according to claim 22, wherein the terminal feeds back the direction of the beam to the base station by using at least one of the following manners, including:

The terminal sends the index information of the beam direction in the second type of system broadcast message request indication information to the base station;

The terminal uses the time-frequency domain location corresponding to the direction of the beam, and uses the time-frequency domain location of the second-system broadcast message request indication information to indicate that the terminal is located. Beam direction

The terminal indicates, by the sequence of the second type of system broadcast message request indication information, the direction of the beam in which the base station is located, where different sequences correspond to different beam directions.
The method according to claim 16, wherein the second type of system broadcast message is used to acquire cell level system information required for normal operation in the network to a terminal that has selected and accessed the subordinate cell of the base station, The cell level system information includes one or more of the following information: configuration information of a downlink control channel, neighboring area information, early warning information, and beam tracking information;

The beam tracking information is used to assist the terminal to perform optimal downlink beam reselection.
The method of claim 24, wherein the beam tracking information comprises one or more of the following: an index of adjacent one or more beams, a time-frequency domain position of the beam identification signal, and a beam identification signal. The sequence used.
The method according to claim 16, wherein the time-frequency resource occupied by the second type of system broadcast message transmission is within the time-frequency resource of the beam transmission to which the terminal belongs, and is determined according to at least one of the following manners:

The second type of system broadcast message occupies a fixed time-frequency resource;

The time-frequency resource occupied by the second type of system broadcast message is dynamically scheduled, and the terminal learns the time-frequency resource location of the second type system broadcast message in a specific manner;

Part of the information in the second type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
The method according to claim 26, wherein the terminal knows the time-frequency resource location occupied by the second type of system broadcast message by at least one of:

1) reading in the first type of system broadcast message;

2) by receiving a dedicated RRC signaling indication;

3) by pre-configuring the time-frequency domain location occupied by the second type of system broadcast message;

4) a calculation rule or algorithm for the spectrum resource when the second type of system broadcast message is predefined;

5) by detecting a control channel on each subframe of the beam transmission period;

6) The uplink random access response message is received, where the uplink random access response message includes time-frequency domain location information of the second type of system broadcast message.
A beam-based system broadcast message transmission device, comprising:

The first sending module is configured to separately send the first type of system broadcast message in all beam directions; wherein the first type of system broadcast message includes, to the terminal in each beam direction, the selection and access to the subordinate cell of the base station. information;

a first receiving module, configured to receive, by the receiving terminal, a second type of system broadcast message request indication information that is sent according to the received first type system broadcast message;

The second sending module is configured to send, according to the second type of system broadcast message request indication information, a second type of system broadcast message in a beam direction corresponding to the terminal.
The device of claim 28 wherein:

The first sending module is configured to send the first type of system broadcast message in all the beam directions according to the predefined time-frequency domain resource allocation manner, where the predefined time-frequency domain resource allocation manner includes the following manners. At least one:

Manner 1: Different beam direction groups are time-divisionally transmitted, wherein the different beam direction groups are time-divisionally transmitted, and the beam direction transmissions belonging to different beam direction groups occupy different time domain resources, and each beam in the same beam direction group occupies the same time domain resource. ;

Manner 2: Different beam direction group frequency division transmission, wherein different beam direction group frequency divisions transmit beam direction transmissions belonging to different beam direction groups occupy different frequency domain resources, and each beam in the same beam direction group occupies the same frequency domain Resources.
The apparatus according to claim 29, wherein when said first type of system broadcast message is transmitted according to a time-frequency domain resource allocation manner occupied by each beam direction transmission, The time-frequency resource used by the first type of system broadcast message is determined according to at least one of the following manners:

The first type of system broadcast message occupies a fixed time-frequency resource;

The time-frequency resource occupied by the first type of system broadcast message is dynamically scheduled, and is indicated by the control channel of the subframe in which the first type of system broadcast message is located to the terminal to indicate that the first type of system broadcast message is occupied. Time-frequency resource location;

Part of the information in the first type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
The apparatus according to claim 28, wherein the information required for selecting and accessing a subordinate cell of the base station comprises one or more of the following:

Cell selection information;

Access configuration information;

Downstream system bandwidth;

System frame number;

Cell identification

Upstream center frequency point;

Upstream and downlink time slot ratio;

Maximum uplink transmit power;

Public land mobile communication network PLMN identity;

Uplink transmission resource information of the dedicated indication sequence;

Uplink transmission resource information of the dedicated indication signal;

The cell selection information is used by the terminal to determine whether the cell of the base station is suitable for selection; the access configuration information is used to indicate, to the terminal, configuration parameters required for accessing a cell of the base station.
The device of claim 28, wherein the device further comprises:

The second sending module is configured to send the query information to the terminal before the second type of system broadcast message request indication information sent by the receiving terminal, where the query information is used to query the terminal whether the terminal needs to receive the second type of system broadcast Message.
The apparatus of claim 32, wherein the challenge information is transmitted by means of a radio resource control RRC message, and/or a paging message.
The apparatus according to claim 28, wherein said second type of system broadcast message request indication information comprises indicating to the base station or implicitly indicating a terminal existing in said beam direction, and said terminal present in said beam direction is required Receive a second type of system broadcast message.
The apparatus of claim 34, wherein the second type of system broadcast message request indication information comprises at least one of the following forms:

a preamble sequence received during a random access procedure of the terminal;

Receiving a dedicated RRC message sent by the terminal;

Receiving a dedicated indication sequence sent by the terminal, or a dedicated indication signal.
The apparatus of claim 28, wherein the second transmitting module comprises:

An acquiring unit, configured to acquire, from the second type of system broadcast message request indication information, a beam direction in which the terminal is located;

And a sending unit, configured to send a second type of system broadcast message in a beam direction in which the terminal is located.
The apparatus according to claim 36, wherein the acquiring unit acquires a beam direction in which the terminal is located by at least one of the following manners:

Obtaining index information of a beam direction in which the terminal is located by reading content of the second type of system broadcast message request indication information;

Determining a beam direction in which the terminal is located by using a time-frequency resource occupied by the second type of system broadcast message request indication information;

Judging by the sequence used by the second type of system broadcast message request indication information The beam direction in which the terminal is located.
The apparatus according to claim 28, wherein said second type of system broadcast message is used to indicate, to a terminal that has selected and accesses a subordinate cell of the base station, cell level system information required for normal operation in the network.
The apparatus according to claim 28, wherein the cell level system information comprises one or more of the following information: channel configuration information, cell reselection information, early warning information, and beam tracking information;

The beam tracking information is used to indicate, to the beam subordinate terminal, information of one or more beams adjacent to the beam, to assist the terminal to perform optimal downlink beam reselection.
The apparatus of claim 39, wherein the beam tracking information comprises one or more of the following: an index of adjacent one or more beams, a time-frequency domain location of the beam identification signal, and a beam identification signal. The sequence used.
The apparatus according to claim 28, wherein when the second sending module sends the second type of system broadcast message in the beam direction corresponding to the terminal, the time-frequency resource used is determined according to at least one of the following manners:

The second type of system broadcast message occupies a fixed time-frequency resource;

The time-frequency resource occupied by the second type of system broadcast message is dynamically scheduled, and the time-frequency resource location of the broadcast message indicating the second type system is indicated by the control channel of the subframe in which the second type system broadcast message is located. ;

Part of the information in the second type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
The device according to claim 41, wherein the time-frequency resource location occupied by the second type of system broadcast message is indicated to the terminal by at least one of:

1) broadcasting a message indication through the first type of system;

2) indicated by a dedicated RRC message;

3) pre-configuring the time-frequency domain location occupied by the second type of system broadcast message;

4) Predetermining a calculation rule or algorithm of the spectrum resource when the second type of system broadcast message is predefined;

5) Include time-frequency domain resource information of the second type of system broadcast message in a control channel of the subframe in which the second type system broadcast message is located;

6) Include the time-frequency domain location of the second type of system broadcast message in the uplink random access response message.
A beam-based system broadcast message transmission device, comprising:

a second receiving module, configured to receive a first type of system broadcast message sent by the base station, where the first type of system broadcast message includes information required for selecting and accessing a cell of the base station;

The third sending module is configured to send the second type of system broadcast message request indication information according to the information required for selecting and accessing the subordinate cell of the base station;

The third receiving module is configured to receive the second type of system broadcast message sent by the base station.
The apparatus according to claim 43, wherein said information required for selecting and accessing a subordinate cell of said base station comprises one or more of the following information:

Cell selection information;

Access configuration information;

Downstream system bandwidth;

System frame number;

Cell identification

Upstream center frequency point;

Upstream and downlink time slot ratio;

Maximum uplink transmit power;

Uplink transmission resource information of the dedicated indication sequence;

Uplink transmission resource information of the dedicated indication signal;

The cell selection information is used by the terminal to determine whether the subordinate cell of the base station is allowed to be selected. The access configuration information is used by the terminal to acquire configuration parameters required for accessing the subordinate cell of the base station.
The apparatus of claim 43, wherein the resource location occupied by the first type of system broadcast message comprises at least one of the following forms:

The first type of system broadcast message occupies a fixed time-frequency resource;

The time-frequency resource occupied by the broadcast message of the first type of system is dynamically scheduled, and the time-frequency resource of the first-class system broadcast message is indicated to the terminal by using a control channel of the subframe in which the first-class system broadcast message is located. position;

Part of the information in the first type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
The device of claim 43, wherein the device further comprises:

The fourth receiving module is configured to: before receiving the second type system broadcast message request indication information, the receiving base station sends the query information, where the query information is used to query the terminal whether it is necessary to receive the second type system broadcast message.
The apparatus of claim 46, wherein the challenge information is sent by means of an RRC message and/or a paging message.
The apparatus according to claim 43, wherein said second type of system broadcast message request indication information comprises means for the terminal to display or implicitly indicate to said base station that said terminal exists in said beam direction, and said terminal needs to receive The second type of system broadcasts messages.
The apparatus according to claim 48, wherein said second type of system broadcast message request indicates a manner of transmitting information, including at least one of the following:

The terminal indicates by using a preamble sequence sent by the random access procedure to the base station;

The terminal indicates to the base station by using a dedicated RRC message;

The terminal indicates to the base station through a dedicated indication sequence or a dedicated indication signal.
The apparatus according to claim 49, wherein said third transmitting module is At least one of the following manners feeds back the direction of the beam to the base station, including:

The terminal sends the index information of the beam direction in the second type of system broadcast message request indication information to the base station;

The terminal uses the time-frequency domain location corresponding to the direction of the beam, and uses the time-frequency domain location of the second-class system broadcast message request indication information to indicate the beam direction where the terminal is located;

The terminal indicates, by the sequence of the second type of system broadcast message request indication information, the direction of the beam in which the base station is located, where different sequences correspond to different beam directions.
The apparatus according to claim 43, wherein the second type of system broadcast message is used to acquire cell level system information required for normal operation in the network to a terminal that has selected and accessed the subordinate cell of the base station, The cell level system information includes one or more of the following information: configuration information of a downlink control channel, neighboring area information, early warning information, and beam tracking information;

The beam tracking information is used to assist the terminal to perform optimal downlink beam reselection.
The apparatus of claim 51, wherein the beam tracking information comprises one or more of the following: an index of adjacent one or more beams, a time-frequency domain location of the beam identification signal, and a beam identification signal. The sequence used.
The apparatus according to claim 43, wherein the time-frequency resource occupied by the second type of system broadcast message transmission is within the time-frequency resource of the beam transmission to which the terminal belongs, and is determined according to at least one of the following manners:

The second type of system broadcast message occupies a fixed time-frequency resource;

The time-frequency resource occupied by the second type of system broadcast message is dynamically scheduled, and the terminal learns the time-frequency resource location of the second type system broadcast message in a specific manner;

Part of the information in the second type of system broadcast message occupies a fixed time-frequency resource, and another The time-frequency resources occupied by some of the information are dynamically scheduled.
The device according to claim 53, wherein the terminal knows the time-frequency resource location occupied by the second type system broadcast message by at least one of:

1) reading in the first type of system broadcast message;

2) by receiving a dedicated RRC signaling indication;

3) by pre-configuring the time-frequency domain location occupied by the second type of system broadcast message;

4) a calculation rule or algorithm for the spectrum resource when the second type of system broadcast message is predefined;

5) by detecting a control channel on each subframe of the beam transmission period;

6) The uplink random access response message is received, where the uplink random access response message includes time-frequency domain location information of the second type of system broadcast message.
A beam-based system broadcast message transmission system comprising the apparatus of any one of claims 28 to 42 and the apparatus of any one of claims 43 to 54.
A computer storage medium arranged to store a computer program for performing the beam-based system broadcast message transmission method according to any one of claims 1 to 15.
A computer storage medium arranged to store a computer program for performing the beam-based system broadcast message transmission method according to any one of claims 16 to 27.