WO2020125555A1

WO2020125555A1 - Data transmission method and base station

Info

Publication number: WO2020125555A1
Application number: PCT/CN2019/125203
Authority: WO
Inventors: 翟西永
Original assignee: 华为技术有限公司
Priority date: 2018-12-17
Filing date: 2019-12-13
Publication date: 2020-06-25
Also published as: CN111328142A

Abstract

Provided are a data transmission method and a base station for improving the system specification of a base station, such that the base station can process SIB and RAR messages of a plurality of cells. The method may comprise: a base station acquiring a first system information block (SIB) message and a second SIB message, wherein the first SIB message is a message of a first cell, the second SIB message is a message of a second cell, the first cell is any one cell from among at least two cells of the base station, and the second cell is any one cell, that differs from the first cell, from among the at least two cells; the base station determining a first window corresponding to the first SIB message, and a second window corresponding to the second SIB message; and the base station distributing, in a pre-set order, the first SIB message to the first window, and distributing the second SIB message to the second window.

Description

A data transmission method and base station

This application requires the priority of the Chinese patent application filed on December 17, 2018 in the Chinese Patent Office with the application number 201811543452.9 and the application name as "a data transmission method and base station", the entire contents of which are incorporated by reference in this application in.

Technical field

The present application relates to the communication field, and in particular, to a data transmission method and a base station.

Background technique

With the development of communication technology, the amount of communication data is also increasing. The data throughput that the base station needs to support is also increasing. Therefore, the specifications of the cell supported by the base station are becoming higher and higher. In the uplink and downlink scheduling of base station products, the specifications are limited due to the limitation of hardware processing capabilities. Generally, due to the limitation of the baseband chip hardware inside the base station, the number of system information blocks (SIB) and random access response (RAR) messages that can be processed per millisecond (ms) is limited, which usually limits the base station Product specifications.

For example, in the existing solution, each cell is usually independently scheduled, and the SIB message and the RAR message are sent to the user equipment (user equipment, UE). The baseband chip inside the base station can be used to synthesize the baseband signal to be transmitted, and the SIB message and RAR message generated by the base station are processed, converted into a wireless transmission signal and sent to the UE. Generally, the baseband chip of the base station can only process one SIB message per millisecond, or the base station can only process one RAR message per millisecond.

Therefore, if the base station processes SIB messages corresponding to two or more cells at the same time, the base station's baseband chip processing capacity may be exceeded. Therefore, how to enable the baseband chip to process SIB messages of more cells has become an urgent problem to be solved.

Summary of the invention

The present application provides a data transmission method and a base station for improving the system specifications of the base station, so that the base station can process SIB and RAR messages of multiple cells.

In view of this, the first aspect of the present application provides a data transmission method, including: a base station acquiring a first system information block SIB message and a second SIB message, the first SIB message is a message of a first cell, and the second SIB message is In the message of the second cell, the first cell is any one of the at least two cells of the base station, and the second cell is any one of the at least two cells that is different from the first cell; the base station determines that the first SIB message corresponds to The first window and the second window corresponding to the second SIB message; the base station distributes the first SIB message to the first window and the second SIB message to the second window in a preset order.

In the embodiment of the present application, the base station generates SIB messages corresponding to each cell, and distributes the SIB messages to windows corresponding to each cell in a preset order. Therefore, the user equipment (UE) can obtain the SIB message from the corresponding window of the accessed cell. Therefore, the SIB messages of each cell can be staggered in the time dimension, and the base station can process the SIB messages of more cells and distribute them directly to the corresponding window. The baseband chip inside the base station does not need to process multiple SIB messages at the same time, but only needs to process the SIB messages in each cell in order to avoid the simultaneous processing of SIB messages from different cells to the baseband chip. Can reduce the base station hardware processing load, improve the base station system specifications.

In an optional implementation manner of the present application, the preset sequence may include:

Arrange according to the order in which the first SIB message and the second SIB message are generated, or according to the priority of the first SIB message and the second SIB message.

In the embodiment of the present application, there are many ways to sort the SIB messages between the cells, including the order in which the SIB messages are generated, or the priority of the SIB messages, etc., so that the UE can obtain the correspondence more accurately Information about the cell.

In an optional implementation manner of the present application, the base station acquiring the first SIB message and the second SIB message may include:

The base station obtains the first data to be transmitted in the first cell and the second data to be transmitted in the second cell; the base station scrambles the first message to be transmitted according to the first preset identifier to obtain the first SIB message, and the base station according to the second Set an identifier to scramble the second data to be transmitted to obtain a second SIB message.

In the embodiment of the present application, the base station may scramble the data corresponding to each cell according to the preset identifier to obtain the SIB message corresponding to each cell. Therefore, after receiving the SIB message, the UE can descramble according to the preset identifier to avoid data loss, and can achieve data confidentiality.

In an optional implementation manner of the present application, the method may further include:

The base station receives the first preamble sent by the first UE and the second preamble sent by the second UE. The first UE is a device that accesses the first cell, and the second UE is a device that accesses the second cell; Obtain the first RAR message, and obtain the second RAR message according to the second preamble; the base station sends the first RAR message to the first UE according to a preset sequence, and sends the second RAR message to the second UE.

In the embodiment of the present application, the base station may receive a preamble, obtain a corresponding RAR message according to the preamble, and allocate a corresponding time slot to each RAR message, and send the RAR message to the corresponding UE in the corresponding time slot. Therefore, the baseband chip of the base station can send RAR messages in preset time slots, and the baseband chip can process the RAR messages in order to avoid processing multiple RAR messages at the same time, which exceeds the load of the baseband chip and further enhances the support of the base station The specifications of the cell.

In an optional implementation manner of the present application, sending the first RAR message to the first UE and sending the second RAR message to the second UE may include:

The base station allocates time slots for the first RAR message and the second RAR message. The first RAR message corresponds to the first time slot and the second RAR message corresponds to the second time slot. The base station sends the first RAR message to the first A UE sends the second RAR message to the second UE in the second time slot.

It should be understood that one or more RAR messages can be allocated in the same time slot, and the specific number can be adjusted according to the processing capability of the baseband chip of the base station.

In an optional implementation manner of the present application, the base station allocating time slots for the first RAR message and the second RAR message includes:

The base station allocates time slots according to the priorities of the first RAR message and the second RAR message, or allocates time slots according to the order in which the first RAR message and the second RAR message are acquired.

In the embodiment of the present application, the time slots may be allocated according to the priority of the RAR message or the order in which the RAR messages are acquired, so that the baseband chip of the base station can process the RAR messages in order.

The second aspect of the present application provides a data transmission method, including:

The base station receives the first preamble sent by the first UE and the second preamble sent by the second UE. The first UE is a device that accesses the first cell, the second UE is a device that accesses the second cell, and the first cell is Any one of the at least two cells of the base station, and the second cell is any one of the at least two cells that is different from the first cell; the base station generates the first RAR message according to the first preamble, and generates the first Two RAR messages; the base station sends the first RAR message to the first UE and the second RAR message to the second UE in a preset order.

In the embodiment of the present application, the base station may receive a preamble, obtain a corresponding RAR message according to the preamble, and allocate a corresponding time slot to each RAR message, and send the RAR message to the corresponding UE in the corresponding time slot. Therefore, the baseband chip of the base station can send RAR messages in preset time slots, and the baseband chip can process the RAR messages in order to avoid processing multiple RAR messages at the same time, which exceeds the load of the baseband chip and improves the support of the base station. The specifications of the cell.

In an optional implementation manner of the present application, the base station sending the first RAR message to the first UE and the second RAR message to the second UE according to a preset sequence may include:

In an optional implementation manner of the present application, the base station allocating time slots for the first RAR message and the second RAR message may include:

A third aspect of the present application provides a base station having a function of implementing the data transmission method of the first aspect. This function can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

A fourth aspect of the present application provides a base station that has the function of implementing the data transmission method of the second aspect. This function can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

A fifth aspect of an embodiment of this application provides a base station, which may include:

A processor, a memory, a bus, and an input-output interface. The processor, the memory, and the input-output interface are connected through the bus; the memory is used to store program code; and the processor executes the application when calling the program code in the memory The steps performed by the base station provided in the first aspect or any embodiment of the first aspect.

A sixth aspect of an embodiment of this application provides a base station, which may include:

A processor, a memory, a bus, and an input-output interface. The processor, the memory, and the input-output interface are connected through the bus; the memory is used to store program code; and the processor executes the application when calling the program code in the memory Steps performed by the base station provided in the second aspect or any embodiment of the second aspect.

A seventh aspect of the embodiments of the present application provides a storage medium on which programmable instructions are stored, and when the programmable instructions run on a computer, the computer is caused to perform the description in the first aspect or any implementation manner of the first aspect Methods.

The storage medium includes: U disk, mobile hard disk, read-only memory (English abbreviation ROM, English full name: Read-Only Memory), random access memory (English abbreviation: RAM, English full name: Random Access Memory), magnetic disk or optical disk And other media that can store program codes.

An eighth aspect of an embodiment of the present application provides a storage medium having programmable instructions stored thereon, when the programmable instructions run on a computer, the computer is executed in any of the implementation manners of the first aspect or the second aspect Describe the method. The storage medium includes: U disk, mobile hard disk, read-only memory (English abbreviation ROM, English full name: Read-Only Memory), random access memory (English abbreviation: RAM, English full name: Random Access Memory), magnetic disk or optical disk And other media that can store program codes.

A ninth aspect of an embodiment of the present application provides a computer program product. The computer program product includes computer software instructions, and the computer software instructions can be loaded by a processor to implement the data transmission method of the first aspect or the second aspect. Process.

In the embodiment of the present application, the base station obtains the SIB message corresponding to each cell, and distributes the SIB message to the window corresponding to each cell in a preset order. Therefore, the user equipment (UE) can obtain the SIB message from the corresponding window of the accessed cell. For example, if the first SIB message corresponds to the first window of the first cell and the second SIB message corresponds to the second window of the second cell, then the base station may separately sort the first SIB message and the second SIB message in a preset order Distribute to the first window and the second window. The first SIB message and the second SIB message can be processed in different time slots, so that the baseband chip in the base station does not need to process the first SIB message and the second SIB message at the same time. Therefore, the SIB messages of each cell can be staggered in the time dimension, and the base station can process the SIB messages of more cells and distribute them directly to the corresponding windows in a preset order. The baseband chip inside the base station can process the SIB messages of each cell in a preset order. Therefore, the baseband chip of the base station does not need to process SIB messages of multiple cells at the same time, and only needs to process each SIB message in the order in which the SIB messages of each cell are arranged, which can avoid the simultaneous existence of SIB messages of different cells and requiring the baseband chip to process. . Can reduce the base station hardware processing load, improve the base station system specifications.

BRIEF DESCRIPTION

FIG. 1 is a schematic diagram of a network architecture to which the data transmission method provided by this application is applied;

2 is a schematic diagram of a possible process of a data transmission method provided by this application;

FIG. 3 is another schematic flowchart of a data transmission method provided by this application;

4 is a schematic diagram of another possible process of the data transmission method provided by this application;

5 is a schematic diagram of a possible structure of a base station provided by this application;

6 is a schematic diagram of another possible structure of a base station provided by this application;

7 is a schematic diagram of another possible structure of a base station provided by this application;

8 is a schematic diagram of another possible structure of a base station provided by this application.

detailed description

First of all, the data transmission method provided in this application can be applied to various communication systems, for example, Global System of Mobile (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division Multiple Access, CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), etc.

Exemplarily, the application scenario of the data transmission method provided by the present application may be as shown in FIG. 1. The communication system to which the data transmission method can be applied may include multiple base stations, and one base station is taken as an example for description here. A base station may include one or more cells, for example, a base station may include one or more antennas, and the fan-shaped radiation area of each antenna may be understood as a cell. Each cell may include one or more UEs (UE1, UE2, UE3, UE4, UE5 in FIG. 1), and the UEs in each cell access the base station.

When the UE accesses the base station, the UE also needs to obtain system information. Therefore, the base station also needs to send the SIB message to the UE. Specifically, the base station may send the information of the cell under the base station to the UE under the base station through SIB information in the form of broadcasting. Moreover, the SIB messages of each cell may be different, therefore, each cell may correspond to one or more SIB messages. After receiving the broadcast SIB message, the UE parses the SIB message according to preset identification data to obtain corresponding cell information. Specifically, the SIB message is transmitted through the system information window (System Information-window). The SI window is a broadcast message sent by the base station. After generating the SIB message, the base station converts it through the baseband chip of the base station, converts it into a baseband signal, and converts the baseband signal into a wireless signal via a wireless module and broadcasts it in the corresponding window.

However, the base station may include multiple cells, and the number of SIB messages processed simultaneously by the baseband chip in the base station is limited. When the base station processes SIB messages of multiple cells at the same time, the baseband chip may be overloaded and affect the processing of SIB messages. Efficiency reduces the specifications of the cell supported by the base station.

Therefore, to improve the specifications of the cell supported by the base station, the data transmission method provided in this application may be as shown in FIG. 2 and may include:

201. The base station obtains the SIB message corresponding to each cell in at least two cells.

First, the base station may include at least two cells, and the at least two cells are two or more. The base station can generate a corresponding SIB message for each cell. Of course, it can also generate a SIB message for one or more of them.

Taking any two different cells therein as an example, the any two cells include a first cell and a second cell. The base station may obtain the first SIB message corresponding to the first cell and the second SIB message corresponding to the second cell.

202. The base station determines a window corresponding to each SIB message.

After acquiring each SIB message corresponding to each cell, the base station determines the SI window corresponding to each cell. Among them, SIB messages can be divided into multiple types, for example, cell access related information, access restriction information, frequency information, and so on. Therefore, different SIB messages can correspond to different windows, for example, different SIBs can correspond to different frequency transmissions, then different SIB messages can be transmitted through windows of different frequencies.

Generally, a window may include one or more SIB messages. Optionally, SIB messages of the same cell may correspond to the same window. In this way, when the UE receives the information in the window, it can obtain related information of the same cell at the same time, without continuously waiting for receiving multiple SIB information before performing corresponding processing, which can improve the processing efficiency of the UE.

203. The base station distributes the SIB messages of each cell to each window in a preset order.

After the base station determines the window corresponding to the SIB message, the SIB message of each cell is distributed to each window in a preset order. Each SIB message is broadcast through the corresponding window, so that the UE in each cell can obtain the information of the corresponding cell according to the SIB message in the window. For example, cell access related information, access restriction information, frequency information, etc. Wherein, the preset order may be arranged according to the order of acquiring each SIB message, or arranged according to the relevance of the SIB message, or arranged according to the priority of the SIB message, and so on.

Specifically, taking the first SIB message and the second SIB message as examples, the first SIB message is a message of a first cell, the second SIB message is a message of a second cell, and the first cell is a message from at least two cells of a base station In any cell, the second cell is any cell different from the first cell among the at least two cells. After acquiring the first SIB message and the second SIB message, according to a preset sequence, distribute the first SIB message to the first window corresponding to the first cell, and distribute the second SIB message to the second window corresponding to the second cell window. Wherein, the first SIB message may be distributed to the first window corresponding to the first cell first, or the second SIB message may be distributed to the second window corresponding to the second cell first.

Wherein, optionally, the preset sequence may include: arranged in the order in which the first SIB message and the second SIB message are generated. For example, the SIB messages generated first may be prioritized. For example, if the first SIB message is obtained first, the first SIB message may be distributed to the first window corresponding to the first cell, and then the second SIB message may be distributed to the first The second window corresponding to the second cell.

Optionally, the preset sequence may further include: ranking according to the priority of the first SIB message and the second SIB message. For example, if the priority of the first SIB message is higher than that of the second SIB message, the first SIB message can be distributed to the first window corresponding to the first cell first, and then the second SIB message can be distributed to the second cell corresponding to the second cell Two windows. Or, if the priority of the second SIB message is higher than that of the first SIB message, the second SIB message can be distributed to the second window corresponding to the second cell first, and then the first SIB message can be distributed to the second cell corresponding to the first cell A window.

Specifically, the base station may generate one or more SIB messages, distribute each SIB message to the corresponding SI window according to a preset sequence after determining the corresponding SI window, and broadcast it. In this way, when the UE receives each SI window, it can acquire corresponding cell information from each SI window.

After receiving the message broadcast by the base station, the UE parses out the SIB message of the corresponding cell from the SIB message. The UE can obtain the information of the corresponding cell through the SIB message of the corresponding cell, or access the corresponding cell and so on. For example, the first UE may receive the first SIB message corresponding to the first cell in the first window, and obtain the information of the first cell from the first SIB message, including the access-related information of the first cell, the first cell's Access restriction information, frequency information, etc. So that the first UE can access the first cell or switch to the first cell according to the first SIB message, and so on.

In the embodiment of the present application, after determining the window corresponding to the SIB message corresponding to each cell, the base station may distribute each SIB message to the corresponding window in a preset order. Therefore, the baseband chip of the base station only needs to process the SIB messages corresponding to each cell in sequence according to a preset sequence, which can avoid the baseband chip in the base station processing SIB messages corresponding to multiple cells at the same time, and can avoid exceeding the baseband chip's The load can improve the specifications of the cell supported by the base station.

The foregoing has described the flow of the data transmission method provided by the present application. Furthermore, in addition to sorting SIB messages in a preset order, RARs can also be processed in a preset order to avoid base station chip processing of RARs The message is overloaded. The flow of the data transmission method provided by the present application is further described below. Please refer to FIG. 3, another schematic flowchart of the data transmission method in this application may include:

301. The base station receives each preamble sent by the UE in each cell.

In addition to arranging the SIB messages in a preset order, the base station can also sort the RAR messages because the baseband chip of the base station has the ability to process RAR messages at the same time.

Specifically, before processing the RAR message, the base station first receives the preamble sent by the UE in each cell to notify the base station that the UE will randomly access, and generates a RAR message according to the preamble.

Among them, one or more cells can be accessed on the base station. When accessing multiple cells, the base station can receive a preamble sent by the UE in each cell, and the preamble can be used to notify the UE corresponding to the base station to randomly access the base station.

Generally, after the cell search process, the UE has achieved downlink synchronization with the cell, so the UE can receive downlink data. However, the UE can perform uplink transmission only if it achieves uplink synchronization with the cell. The UE establishes a connection with the cell through RAR and obtains uplink synchronization. The base station can inform the UE on which time-frequency resources the preamble can be transmitted through the SIB2 of the broadcast cell. The preamble used by the UE is directly specified by the base station, or may be generated according to a preset rule.

302. The base station acquires each RAR message corresponding to each UE according to each preamble.

After receiving each preamble, the base station may obtain each RAR message corresponding to each UE according to each preamble. Each RAR message may be used to notify each UE of successful access to the base station.

Taking the first UE and the second UE as examples, the first UE and the second UE access different cells, the first UE is a device accessing the first cell, and the second UE is a device accessing the second cell, the first The cell is any cell of at least two cells of the base station, and the second cell is any cell of the at least two cells that is different from the first cell. After receiving the first preamble of the first UE, the base station generates a first RAR message corresponding to the first UE according to the first preamble. After receiving the second preamble of the second UE, the base station generates a second RAR message corresponding to the second UE according to the second preamble.

Generally, if the first RAR message may include the first preamble sent by the first UE, the first UE may determine that the base station allows access, and at this time, the first UE may perform further data exchange. If the first RAR message does not include the first preamble sent by the first UE, or the first UE does not receive the RAR message within a preset duration, the first UE may determine that the access fails.

303. The base station sends each RAR message to the corresponding UE in a preset order.

After determining the order corresponding to each RAR, the base station sends each RAR message to the corresponding UE in a preset order.

Take the first RAR message and the second RAR message as examples. The first RAR message corresponds to the first UE, and the second RAR message corresponds to the second UE. The first UE and the second UE access different cells, the first UE is a device accessing the first cell, the second UE is a device accessing the second cell, and the first cell is any of at least two cells of the base station One cell and the second cell are any cells of the at least two cells that are different from the first cell. After generating the first RAR message and the second RAR message, the base station sends the first RAR message to the first UE and the second RAR message to the second UE in a preset order.

Alternatively, the base station may allocate time slots for each RAR message. For example, time slots may be allocated for the first RAR message and the second RAR message, the first RAR message corresponds to the first time slot, and the second RAR message corresponds to the second time slot.

Alternatively, it may be arranged according to the order in which the RAR messages are acquired. For example, the RAR messages generated first may be prioritized. For example, if the first RAR message is acquired first, the first RAR message may be distributed to the first UE first, and then the second RAR message may be distributed to the second UE.

Further optionally, when allocating the time slot, the time slot may be allocated according to the priority of the first RAR message and the second RAR message, for example, if the first RAR message is generated first, the first RAR message is allocated a priority time slot .

Optionally, it can be arranged according to the priority of the RAR message. For example, RAR messages with a high priority can be prioritized. For example, if the first RAR message has a higher priority than the second RAR message, the first RAR message can be distributed to the first UE first, and then the second RAR message can be distributed. To the second UE.

Further optionally, when allocating the time slot, the time slot may be allocated according to the priority of the RAR message. For example, if the priority of the first RAR message is higher than that of the second RAR message, the first RAR message is assigned a priority time slot.

Specifically, each RAR message needs to be converted and converted into a baseband signal by the baseband chip of the base station, and further converted by the wireless module into a wireless signal and sent to each UE via an antenna. Generally, multiple RAR messages can be acquired on the base station. Therefore, the baseband chip can process each RAR according to the time slot allocated by the base station for each RAR message in order to avoid the baseband chip processing multiple RAR messages at the same time, and then exceeding The load of the baseband chip.

It should be understood that if the baseband chip can process N RAR messages at the same time, N>=1, then the N RAR messages can be allocated the same time slot, so that the baseband chip can process the N RAR messages at the same time, and does not exceed the baseband chip’s load.

Therefore, in the embodiment of the present application, the base station may allocate a corresponding time slot to the RAR message corresponding to each cell, so that the baseband chip can process the RAR message corresponding to each cell according to the allocated time slot. It is equivalent to that the baseband chip can process the RAR message corresponding to each cell in a preset order. Therefore, the baseband chip can process RAR messages within the load, avoid exceeding the load of the baseband chip, and improve the cell specifications supported by the base station.

The foregoing describes the transmission of the SIB message and the RAR message. The following describes the data transmission method provided by the embodiments of the present application in more detail in conjunction with the foregoing SIB message and RAR message. Please refer to FIG. 4, which is another schematic flowchart of a data transmission method according to an embodiment of the present application.

401. The base station obtains the SIB message corresponding to each cell in at least two cells.

First, the base station may radiate at least two cells, and the at least two cells may include two or more cells. The base station may acquire one or more SIB messages in the cell covered by the base station, or may acquire SIB messages for each cell in the cell covered by the base station. The SIB message includes the system information of the corresponding cell.

Optionally, the SIB message corresponding to each cell may be generated by the base station, or may be read by the base station from a storage medium or a database, and may be specifically adjusted according to actual application scenarios.

Specifically, the base station may generate the SIB message according to a preset format after acquiring the SI data. SIB messages can include multiple data types, such as SIB1, SIB2, SIB3, etc. SIB1 can carry information related to cell access and cell selection, SIB2 can carry information related to common radio resource configuration, and SIB3 can carry co-frequency and different Frequency, inter-standard cell reselection and other related information. In addition, the SIB message needs to be scrambled according to the preset identifier to obtain the SIB message. Specifically, the data to be transmitted can be scrambled through the SI-radio network temporary identifier (RNTI). The data to be transmitted can be Information about the corresponding cell. In addition, the SI-RNTI of each cell may be the same or different. Therefore, when the UE receives the SIB message, it can parse the SIB message according to the SI-RNTI of each cell to obtain the data included in the SIB message. The SI-RNTI of each cell can be known when the UE accesses the corresponding cell.

Specifically, the specific method of scrambling may be to insert a preset identifier into the data to be transmitted, or generate a scrambling polynomial according to the preset identifier, and then perform XOR calculation and other methods, which are specifically adjusted according to the actual application scenario. limited.

402. The base station determines each window corresponding to each SIB message.

After acquiring the SIB message corresponding to each cell in at least two cells, the base station may allocate a transmission window for each SIB message. Taking the first SIB message as an example, after acquiring the first SIB message, the base station determines the first window corresponding to the first SIB message.

In addition, in order to facilitate the UE to read the SIB message, the SIB message of the same cell can be transmitted in the same SI window, so that the UE can receive the SIB message of the corresponding cell at the same time, and improve the processing efficiency of the UE. For example, if there are 4 windows in a transmission cycle and the base station includes 4 radiating cells, then the SIB message of the first cell can be distributed to the first window for transmission, and the SIB message of the second cell can be distributed to the second window for transmission To send, the SIB message of the third cell can be distributed to the third window for sending, and the SIB message of the fourth cell can be distributed to the fourth window for sending.

403. The base station distributes each SIB message to the corresponding window in a preset order.

After the base station determines the window corresponding to each SIB message, it distributes each SIB message to the corresponding window in a preset order.

Taking the first SIB message and the second SIB message as examples, the first SIB message is a message of a first cell, the second SIB message is a message of a second cell, and the first cell is any one of at least two cells of a base station The second cell is any one of the at least two cells that is different from the first cell. After acquiring the first SIB message and the second SIB message, according to a preset sequence, distribute the first SIB message to the first window corresponding to the first cell, and distribute the second SIB message to the second window corresponding to the second cell window. Wherein, the first SIB message may be distributed to the first window corresponding to the first cell first, or the second SIB message may be distributed to the second window corresponding to the second cell first.

Specifically, after determining the window corresponding to each SIB message, the base station sends the baseband chip to the base station chip in a preset order, and the baseband chip processes each SIB message.

Generally, the SI window can also be divided into multiple windows, for example, those with the same period can be transmitted in the same SI window. Moreover, each window may be arranged in time sequence, for example, each window may be separated by 10 ms. An SI window can be understood as an SI data packet. The transmission period and window number of the SI window can determine the system frame number and subframe number sent by the SIB message.

Exemplarily, the SI window may be understood as a time sequence for sending SI messages. For example, a window may include 4 windows, each window occupies 10 ms, and the SI message is sent in each window. SI message can be understood as a message included. One SI message may include one or more SIB messages, and the plurality is two or more. For example, the schedulingInfoList of SystemInformationBlockType1 is a list of SI messages, and the order of each SI message in the list is represented by n. For example, if the schedulingInfoList includes 4 SI messages, there will be 4 SI windows to send these 4 SI messages. n means that the SI message is sent in several SI windows. If n is 1, it means that the SI message corresponding to n is sent in the first SI window. To maintain the continuity of sending SI messages, the timing of sending each SI message can be calculated. For example, a formula can be established: x=(n-1)*w, where w is the length of the SI window and n is the sequence number of the SI window. Then the start frame of the SI window can satisfy: SFN%T=FLOOR(x/10), SFN is the frame number of the SI message, and T is the period corresponding to the SI message, which can be determined by si-Periodicity and can be performed in units of 10ms determine. Among them, SFN%T can guarantee the period of the SI window, and FLOOR(x/10) can determine the starting system frame of the SI window within the period, where one system frame is 10 ms. Therefore, the starting frame of the actual SI window is x%10. Wherein, since one SI message can include one or more SIB messages, the one or more SIB messages can be arranged in a preset order, for example, they can be arranged according to the timing of obtaining the SIB messages, and between SIB messages Ranking of the degree of relevance and so on. Therefore, in this embodiment of the present application, the SIB messages included in each SI message can be arranged in a preset order, so that the baseband chip in the base station can process the SIB messages in a preset order without processing multiple SIB news.

404. The base station broadcasts each SIB message.

After distributing the first SIB message to the first window in a preset order, the base station broadcasts the first window so that the UE in the first cell can obtain the first SIB message in the first window.

Specifically, the base station broadcasts the corresponding SIB message in each window, and each window may be arranged in order. Among them, each SIB message is also arranged in a preset order in the corresponding window. For example, the timing of the first window is 10 ms, then, the first SIB message may occupy 1 ms, may be the first ms, may also be the third ms, and so on.

Specifically, the baseband chip may convert the SIB message into a baseband signal, and the wireless module further converts the baseband signal into a wireless signal to broadcast via an antenna. All UEs within the coverage of the base station can receive the SIB information sent by the base station, or the base station can also send it directionally. For example, the SIB information can only be broadcast to the first cell, the second cell, and the third cell, but not to the fourth cell. Broadcast SIB information, etc.

405. The UE parses the corresponding SIB message.

After the base station broadcasts the SIB message of each cell, each UE parses the received SIB information of the corresponding cell.

Specifically, each cell may correspond to the SI-RNTI. Taking the first UE in the first cell as an example, the SIB information may be data obtained according to the SI-RNTI. Therefore, the first UE may use the SI-RNTI corresponding to the first cell. The RNTI parses the first SIB message to obtain SIB information corresponding to the first cell. Generally, the UE may also receive SIB messages of other cells broadcasted by the base station. The UE may parse according to the SI-RNTI of the first cell. If the analysis is unsuccessful, the UE may confirm that the SIB message is not the SIB message of the first cell.

In addition, the UE can receive the first SIB message only after communicating with the first cell. For example, the first UE may send an uplink request message to the first cell, and the base station replies with a response message. The response message may carry the SI-RNTI.

Therefore, in the embodiment of the present application, the base station may arrange the SIB messages in a preset order in the first window. When processing the SIB messages, the baseband chip only needs to perform the order for each SIB message in the order of the windows It can be processed only, which can avoid the baseband chip processing multiple SIB messages at the same time, resulting in exceeding the baseband chip compliance. The baseband chip can process SIB messages of multiple cells, which can improve the specifications of cells supported by the base station.

406. The UE sends a preamble to the base station.

Generally, the UE establishes a downlink connection with the base station, and the UE can receive downlink data sent by the base station, for example, the SIB message broadcast by the foregoing base station. The UE also needs to establish an uplink connection with the base station so that the UE can send uplink data. At this time, the UE can randomly access the base station, and can send a preamble to the base station to allow the base station to allow the UE to access the base station.

Wherein, if multiple UEs access the base station, the base station may receive the preamble sent by multiple UEs. The multiple UEs may be devices in different cells. For example, the base station receives the first preamble sent by the first UE and the second preamble sent by the second UE. The first UE is a device that accesses the first cell, the second UE is a device that accesses the second cell, and the first cell It is any cell of at least two cells of the base station, and the second cell is any cell of the at least two cells that is different from the first cell.

407. The base station obtains the RAR message corresponding to the UE.

After receiving the preamble, the base station may obtain the RAR message corresponding to the UE according to the preamble. The RAR message may be used to notify the UE of successful access to the base station.

Specifically, after receiving the preamble, the base station may report to the media access control (Media Access Control, MAC) layer and generate a corresponding RAR message according to the preamble. The preamble may be included in the RAR message.

After the base station receives the preambles sent by multiple UEs, the base station can generate RAR messages corresponding to the multiple UEs. For example, the base station may generate a first RAR message according to the first preamble sent by the first UE, and generate a second RAR message according to the second preamble sent by the second UE.

408. The base station sends a RAR message to the UE in a preset order.

After the base station obtains the RAR message, it sends the RAR message to the UE in a preset order.

Generally, if multiple UEs access the base station, the base station can receive the preamble sent by multiple UEs. The multiple UEs may be devices in different cells. For example, the base station receives the first preamble sent by the first UE and the second preamble sent by the second UE. The first UE is a device that accesses the first cell, the second UE is a device that accesses the second cell, and the first cell It is any cell of at least two cells of the base station, and the second cell is any cell of the at least two cells that is different from the first cell. The base station may generate a first RAR message according to the first preamble sent by the first UE, and generate a second RAR message according to the second preamble sent by the second UE. Then, according to a preset sequence, the first RAR message is sent to the first UE, and the second RAR message is sent to the second UE.

In an embodiment of the present application, when allocating a time slot to a RAR message, the base station may allocate according to the priority of the RAR message. For example, if the priority of the first RAR message is high, the time slot allocated for the first RAR message may be a time slot for priority transmission, and if the priority of the first RAR message is not high, it is the time allocated for the first RAR message The slot may be a time slot that is not transmitted preferentially. Generally, when determining the priority of the first RAR message, it can be determined according to the priority of the first UE, and can also be determined according to the duration of receiving the first preamble by the base station. The higher the duration of receiving the first preamble, the first RAR message The higher the priority of, to avoid the access failure of the first UE due to timeout.

After the UE sends the preamble, it waits for the preset duration, if the RAR message is not received within the preset duration, the UE can confirm that the access fails. Therefore, after acquiring the RAR message, the base station may send the RAR message to the UE within a preset duration to prevent the UE from failing to confirm the access failure due to timeout, which may cause the UE to fail to access the base station.

Specifically, the RAR message is converted by the baseband chip of the base station and converted into a baseband signal, and the wireless module converts the baseband signal into a wireless signal and sends it to the UE via the antenna. Generally, multiple RAR messages can be acquired on the base station. Therefore, the baseband chip can process each RAR according to the time slot allocated by the base station for each RAR message in order to avoid the baseband chip processing multiple RAR messages at the same time, and then exceeding The load of the baseband chip.

Therefore, in the embodiment of the present application, the base station may distribute the SIB messages to the corresponding windows in a preset order, and allocate the sending time slots for the RAR messages. Therefore, it may be that the baseband chip of the base station processes the SIB message and the RAR message process once in sequence. Avoid exceeding the load of the baseband chip and improve the specifications of the cell supported by the base station.

The foregoing describes the data transmission method provided by the present application, and the following describes the device provided by the present application. First, apply for a base station, please refer to Figure 5, which can include:

The obtaining unit 501 is used to obtain a first system information block SIB message and a second SIB message, the first SIB message is a message of a first cell, the second SIB message is a message of a second cell, and the first cell is at least two of the base station In any cell of the cells, the second cell is any cell different from the first cell in at least two cells;

The processing unit 502 is configured to determine a first window corresponding to the first SIB message and a second window corresponding to the second SIB message;

The distribution unit 503 is configured to distribute the first SIB message to the first window and the second SIB message to the second window in a preset order.

The base station may be used to perform the steps performed by the base station in FIG. 2 or FIG. 4 described above.

In an optional implementation manner of the present application, the preset sequence includes:

In an optional implementation manner of the present application, the obtaining unit 501 may specifically be used for:

Obtain the first data to be transmitted in the first cell and the second data to be transmitted in the second cell;

Scrambling the first message to be transmitted according to the first preset identifier to obtain the first SIB message, and scrambling the second data to be transmitted according to the second preset identifier to obtain the second SIB message.

In an optional implementation manner of the present application, the base station may further include: a receiving unit 504 and a sending unit 506;

The receiving unit 504 may be used to receive the first preamble sent by the first UE and the second preamble sent by the second UE, the first UE is a device to access the first cell, and the second UE is a device to access the second cell ;

The obtaining unit 501 is further configured to obtain the first RAR message according to the first preamble and obtain the second RAR message according to the second preamble;

The sending unit 506 may send the first RAR message to the first UE and the second RAR message to the second UE in a preset order.

In an optional implementation manner of the present application, the base station may further include: an allocation unit 505;

The allocation unit 505 may be specifically configured to allocate time slots for the first RAR message and the second RAR message, where the first RAR message corresponds to the first time slot and the second RAR message corresponds to the second time slot.

The sending unit 506 is further configured to send the first RAR message to the first UE in the first time slot and send the second RAR message to the second UE in the second time slot.

In an optional implementation manner of the present application, the allocation unit 505 is specifically used to:

Allocate a first time slot to the first RAR message and a second time slot to the second RAR message according to the priorities of the first RAR message and the second RAR message;

or,

A time slot is allocated according to the order in which the first RAR message and the second RAR message are acquired, a first time slot is allocated for the first RAR message, and a second time slot is allocated for the second RAR message.

In addition to the aforementioned base station in FIG. 5, for the flow of the data transmission method in FIG. 3, the present application also provides another base station, as shown in FIG. 6, which may include:

The receiving unit 601 is configured to receive the first preamble sent by the first UE and the second preamble sent by the second UE. The first UE is a device that accesses the first cell, and the second UE is a device that accesses the second cell. The first cell is any cell of at least two cells of the base station, and the second cell is any cell of at least two cells that is different from the first cell;

The generating unit 602 is configured to generate a first RAR message according to the first preamble and generate a second RAR message according to the second preamble;

The sending unit 604 is configured to send the first RAR message to the first UE and the second RAR message to the second UE in a preset order.

The base station may be used to perform the steps performed by the base station in FIG. 3 described above.

In an optional implementation manner of the present application, the base station may further include: an allocation unit 603;

The allocation unit 603 may be used to allocate time slots for the first RAR message and the second RAR message, where the first RAR message corresponds to the first time slot and the second RAR message corresponds to the second time slot;

The sending unit 604 is further configured to send the first RAR message to the first UE in the first time slot and send the second RAR message to the second UE in the second time slot.

In an optional implementation manner of the present application, the allocation unit 603 may specifically be used for:

or,

7 is a schematic structural diagram of a base station according to an embodiment of the present invention. The base station 700 may have a relatively large difference due to different configurations or performance, and may include one or more central processing units (CPUs) 722 (for example , One or more processors) and memory 732, one or more storage media 730 (such as one or more mass storage devices) that stores application programs 742 or data 744. The memory 732 and the storage medium 730 may be short-term storage or persistent storage. The program stored in the storage medium 730 may include one or more modules (not shown in the figure), and each module may include a series of instruction operations on the base station. Furthermore, the central processor 722 may be configured to communicate with the storage medium 730 and execute a series of instruction operations in the storage medium 730 on the base station 700.

In addition, the base station may also include a baseband chip (not shown in the figure) for converting the electrical signal into a baseband signal for transmission.

The central processor 722 can perform the steps performed by the base station in FIG. 2 or FIG. 4 according to the instruction operation.

The base station 700 may also include one or more power supplies 726, one or more wired or wireless network interfaces 750, one or more input and output interfaces 758, and/or one or more operating systems 741, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.

The steps performed by the base station in the above embodiments may be based on the base station structure shown in FIG. 7.

8 is a schematic structural diagram of a base station according to an embodiment of the present invention. The base station 800 may have a relatively large difference due to different configurations or performances, and may include one or more central processing units (CPUs) 822 (for example , One or more processors) and memory 832, one or more storage media 830 (such as one or more mass storage devices) storing application programs 842 or data 844. The memory 832 and the storage medium 830 may be short-term storage or persistent storage. The program stored in the storage medium 830 may include one or more modules (not shown in the figure), and each module may include a series of instruction operations on the base station. Furthermore, the central processor 822 may be configured to communicate with the storage medium 830 and execute a series of instruction operations in the storage medium 830 on the base station 800.

The central processor 822 may perform the steps performed by the base station in FIG. 3 according to the instruction operation.

The base station 800 may also include one or more power supplies 826, one or more wired or wireless network interfaces 850, one or more input/output interfaces 858, and/or one or more operating systems 841, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.

The steps performed by the base station in the above embodiments may be based on the base station structure shown in FIG. 8.

Those skilled in the art can clearly understand that for the convenience and conciseness of the description, the specific working processes of the system, device and unit described above can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical, or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or software function unit.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application essentially or part of the contribution to the existing technology or all or part of the technical solution can be embodied in the form of a software product, the computer software product is stored in a storage medium , Including several instructions to enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in the embodiments of FIGS. 2-4 in this application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program code .

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, persons of ordinary skill in the art should understand that they can still The technical solutions described in the embodiments are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

A method of data transmission, characterized in that it includes:

The base station obtains a first system information block SIB message and a second SIB message, the first SIB message is a message of a first cell, the second SIB message is a message of a second cell, and the first cell is the base station Any one of the at least two cells, the second cell is any one of the at least two cells that is different from the first cell;

The base station determines a first window corresponding to the first SIB message and a second window corresponding to the second SIB message;

The base station distributes the first SIB message to the first window and distributes the second SIB message to the second window in a preset order.
The method according to claim 1, wherein the preset sequence includes:

Arrange in the order in which the first SIB message and the second SIB message are generated, or in accordance with the priority of the first SIB message and the second SIB message.
The method according to claim 1 or 2, wherein the base station acquiring the first SIB message and the second SIB message includes:

The base station obtains the first data to be transmitted of the first cell and the second data to be transmitted of the second cell;

The base station scrambles the first message to be transmitted according to a first preset identifier to obtain the first SIB message, and the base station scrambles the second data to be transmitted according to a second preset identifier to obtain The second SIB message.
The method according to any one of claims 1-3, characterized in that the method further comprises:

The base station receives the first preamble sent by the first UE and the second preamble sent by the second UE, where the first UE is a device that accesses the first cell and the second UE is a device that accesses the second cell;

The base station obtains a first RAR message according to the first preamble, and obtains a second RAR message according to the second preamble;

The base station sends the first RAR message to the first UE according to a preset sequence, and sends the second RAR message to the second UE.
The method according to claim 4, wherein sending the first RAR message to the first UE and sending the second RAR message to the second UE include:

The base station allocates time slots for the first RAR message and the second RAR message, the first RAR message corresponds to the first time slot, and the second RAR message corresponds to the second time slot;

The base station sends the first RAR message to the first UE in the first time slot, and sends the second RAR message to the second UE in the second time slot.
The method according to claim 5, wherein the base station allocating time slots for the first RAR message and the second RAR message includes:

The base station allocates time slots according to priorities of the first RAR message and the second RAR message, or allocates time slots according to the order in which the first RAR message and the second RAR message are acquired.
A method of data transmission, characterized in that it includes:

The base station receives the first preamble sent by the first UE and the second preamble sent by the second UE. The first UE is a device that accesses the first cell, and the second UE is a device that accesses the second cell. The first cell is any cell of at least two cells of the base station, and the second cell is any cell of the at least two cells that is different from the first cell;

The base station generates a first RAR message according to the first preamble, and generates a second RAR message according to the second preamble;

The base station sends the first RAR message to the first UE according to a preset sequence, and sends the second RAR message to the second UE.
The method according to claim 7, wherein the base station sends the first RAR message to the first UE in a preset order, and sends the second RAR message to the second UE, including:

The base station allocates time slots for the first RAR message and the second RAR message, the first RAR message corresponds to the first time slot, and the second RAR message corresponds to the second time slot;

The base station sends the first RAR message to the first UE in the first time slot, and sends the second RAR message to the second UE in the second time slot.
The method according to claim 8, wherein the base station allocating time slots for the first RAR message and the second RAR message includes:

The base station allocates time slots according to priorities of the first RAR message and the second RAR message, or allocates time slots according to the order in which the first RAR message and the second RAR message are acquired.
A base station, characterized in that it includes:

An obtaining unit, configured to obtain a first system information block SIB message and a second SIB message, the first SIB message is a message of a first cell, the second SIB message is a message of a second cell, the first cell Is any cell of at least two cells of the base station, and the second cell is any cell of the at least two cells that is different from the first cell;

A processing unit, configured to determine a first window corresponding to the first SIB message and a second window corresponding to the second SIB message;

The distribution unit is configured to distribute the first SIB message to the first window and distribute the second SIB message to the second window in a preset order.
The base station according to claim 10, wherein the preset sequence includes:

Arrange in the order in which the first SIB message and the second SIB message are generated, or in accordance with the priority of the first SIB message and the second SIB message.
The base station according to claim 10 or 11, wherein the acquisition unit is specifically configured to:

Acquiring first data to be transmitted of the first cell and second data to be transmitted of the second cell;

Scramble the first message to be transmitted according to a first preset identifier to obtain the first SIB message, and scramble the second data to be transmitted according to a second preset identifier to obtain the first Two SIB messages.
The base station according to any one of claims 10-12, wherein the base station further comprises: a receiving unit and a sending unit;

The receiving unit is configured to receive a first preamble sent by a first UE and a second preamble sent by a second UE, the first UE is a device that accesses a first cell, and the second UE is an access Equipment in the second cell;

The obtaining unit is further configured to obtain a first RAR message according to the first preamble, and obtain a second RAR message according to the second preamble;

The sending unit is configured to send the first RAR message to the first UE and send the second RAR message to the second UE in a preset order.
The base station according to claim 13, wherein the base station further comprises: an allocation unit,

The allocation unit is configured to allocate time slots for the first RAR message and the second RAR message, the first RAR message corresponds to the first time slot, and the second RAR message corresponds to the second time slot;

The sending unit is further configured to send the first RAR message to the first UE in the first time slot and send the second RAR message to the second in the second time slot UE.
The base station according to claim 14, wherein the allocation unit is specifically used for:

Allocate the first time slot to the first RAR message and allocate the second time slot to the second RAR message according to the priorities of the first RAR message and the second RAR message;

or,

Allocate time slots according to the order in which the first RAR message and the second RAR message are acquired, allocate the first time slot to the first RAR message, and allocate the second time to the second RAR message Gap.
A base station, characterized in that it includes:

A receiving unit, configured to receive a first preamble sent by a first UE and a second preamble sent by a second UE, the first UE is a device to access a first cell, and the second UE is to access a second cell Device, the first cell is any one of at least two cells of the base station, and the second cell is any one of the at least two cells different from the first cell;

A generating unit, configured to generate a first RAR message according to the first preamble, and generate a second RAR message according to the second preamble;

The sending unit is configured to send the first RAR message to the first UE according to a preset sequence, and send the second RAR message to the second UE.
The base station according to claim 16, wherein the base station further comprises: an allocation unit,

The allocation unit is configured to allocate time slots for the first RAR message and the second RAR message, the first RAR message corresponds to the first time slot, and the second RAR message corresponds to the second time slot;

The sending unit is further configured to send the first RAR message to the first UE in the first time slot and send the second RAR message to the second in the second time slot UE.
The base station according to claim 17, wherein the allocation unit is specifically used for:

Allocate the first time slot to the first RAR message and allocate the second time slot to the second RAR message according to the priorities of the first RAR message and the second RAR message;

or,

Allocate time slots according to the order in which the first RAR message and the second RAR message are acquired, allocate the first time slot to the first RAR message, and allocate the second time to the second RAR message Gap.
A base station, characterized in that it includes a processor and a storage medium;

The memory is used to store instructions; the processor is used to execute the instructions in the memory, so that the base station executes the method according to any one of claims 1-6.
A base station, characterized in that it includes a processor and a storage medium;

The memory is used to store instructions; the processor is used to execute the instructions in the memory, so that the base station executes the method according to any one of claims 7-9.
A computer-readable storage medium including instructions, which when executed on a computer, causes the computer to perform the method according to any one of claims 1-9.