WO2019062525A1

WO2019062525A1 - Uplink carrier aggregation maintenance method, system, apparatus, and readable storage medium

Info

Publication number: WO2019062525A1
Application number: PCT/CN2018/104789
Authority: WO
Inventors: 张凯敏; 申新乐; 武绍涛
Original assignee: 中兴通讯股份有限公司
Priority date: 2017-09-29
Filing date: 2018-09-10
Publication date: 2019-04-04
Also published as: CN109587723B; CN109587723A

Abstract

Disclosed by the embodiments of the present invention are an uplink carrier aggregation maintenance method, system, apparatus, and computer-readable storage medium, said uplink carrier aggregation maintenance method comprising: a base station obtaining a time offset value of a primary carrier and a time offset value of a secondary carrier (S10); the base station performing digital filtering on the time offset value of the primary carrier and the time offset value of the secondary carrier so as to obtain a filter value of the primary carrier and a filter value of the secondary carrier (S20); the base station performing a weighted calculation on the filter value of the primary carrier and the filter value of the secondary carrier so as to obtain a time offset input value (S30); if the base station detects that the absolute value of the time offset input value is greater than a first threshold value, then obtaining a data control instruction and sending said data control instruction to a to-be-adjusted terminal, so that the to-be-adjusted terminal performs synchronization adjustment of the carrier timing advance (S40).

Description

Uplink carrier aggregation maintenance method, system, device and readable storage medium

Technical field

This document relates to, but is not limited to, the technical field, and in particular, to an uplink carrier aggregation maintenance method, system, device, and computer readable storage medium.

Background technique

With the rapid development of communication technologies and the rapid spread of communication terminals, people are increasingly demanding communication uplink rates. Currently, communication base stations generally maintain the uplink synchronization status of the base station by increasing the system transmission bandwidth, such as using carrier aggregation technology to improve the uplink data rate of the communication data.

However, the primary carrier and the secondary carrier of the communication base station often have non-synchronous coverage in the actual deployment network, resulting in inconsistent timing advances of the primary carrier and the secondary carrier, and the time difference between the primary carrier and the secondary carrier using the time-shifted input value is advanced. The amount of uplink synchronization is maintained to cause the uplink performance of the secondary carrier to deteriorate.

Summary of invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The embodiment of the present invention provides an uplink carrier aggregation maintenance method, system, device, and computer readable storage medium, which can prevent the time advance of the primary carrier and the secondary carrier from being inconsistent in a networked scenario in which the primary carrier and the secondary carrier are not completely covered. This causes the deterioration of the uplink performance of the secondary carrier.

The uplink carrier aggregation maintenance method provided by the embodiment of the present invention includes:

The base station obtains the offset value of the primary carrier and the offset value of the secondary carrier;

The base station performs digital filtering processing on the primary carrier offset value and the secondary carrier offset value to obtain a primary carrier filter value and a secondary carrier filter value;

The base station performs weighting calculation on the primary carrier filter value and the secondary carrier filter value to obtain a time offset input value;

When the base station detects that the absolute value of the offset input value is greater than the first threshold, the data control command is acquired, and the data control command is sent to the terminal to be adjusted, so that the terminal to be adjusted performs synchronous adjustment of the carrier time advance amount.

Another uplink carrier aggregation maintenance method provided by the embodiment of the present invention includes:

The terminal to be adjusted receives a data control instruction sent by the base station;

The primary carrier adjustment value and the secondary carrier adjustment value in the terminal analysis acquisition instruction to be adjusted;

The terminal to be adjusted adjusts the time advance amount of the primary carrier according to the primary carrier adjustment value, and adjusts the time advance amount of the secondary carrier according to the secondary carrier adjustment value.

The embodiment of the present invention further provides an uplink carrier aggregation maintenance system, where the uplink carrier aggregation maintenance system includes a base station, and the base station includes:

Obtaining a module, configured to obtain a bias value of the primary carrier and a bias value of the secondary carrier;

The processing module is configured to perform digital filtering processing on the primary carrier offset value and the secondary carrier offset value to obtain a primary carrier filter value and a secondary carrier filter value;

a calculation module, configured to perform weighted calculation on the primary carrier filter value and the secondary carrier filter value to obtain a time offset input value;

The sending module is configured to acquire a data control instruction when the offset input value is greater than the first threshold, and send the data control command to the terminal to be adjusted, so that the terminal to be adjusted performs carrier synchronization adjustment.

The embodiment of the present invention further provides an uplink carrier aggregation maintenance apparatus, where the uplink carrier aggregation maintenance apparatus includes: a memory, a processor, a communication bus, and an uplink carrier aggregation maintenance program stored in the memory,

The communication bus is configured to implement a communication connection between the processor and the memory;

The processor is configured to perform the uplink carrier aggregation maintenance procedure to implement the following steps:

When the base station detects that the absolute value of the offset input value is greater than the first threshold, the data control command is obtained, and the data control command is sent to the terminal to be adjusted, so that the terminal to be adjusted performs synchronous adjustment of the carrier time advance amount.

Furthermore, an embodiment of the present invention further provides a computer readable storage medium storing one or more programs, the one or more programs being executable by one or more processors for use to:

In the embodiment of the present invention, the base station obtains the offset value of the primary carrier and the offset value of the secondary carrier; the base station performs digital filtering processing on the primary carrier offset value and the secondary carrier time offset value to obtain the primary carrier filter value and the secondary carrier filter value; Performing a weighted calculation on the primary carrier filter value and the secondary carrier filter value to obtain a time offset input value; when the base station detects that the absolute value of the bias input value is greater than the first threshold, acquiring a data control command, and sending the data control command to The terminal is to be adjusted, so that the terminal to be adjusted performs synchronous adjustment of the carrier time advance amount.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a schematic flowchart of a method for maintaining an uplink carrier aggregation according to an embodiment of the present invention;

2 is still another schematic flowchart of an uplink carrier aggregation maintenance method according to an embodiment of the present invention;

FIG. 3 is still another schematic flowchart of an uplink carrier aggregation maintenance method according to an embodiment of the present invention;

4 is a structural diagram of a system of an uplink carrier aggregation maintenance system according to an embodiment of the present invention;

5 is a schematic structural diagram of a device in a hardware operating environment according to a method according to an embodiment of the present invention;

FIG. 6 is still another schematic flowchart of an uplink carrier aggregation maintenance method according to an embodiment of the present invention.

Detailed

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

An embodiment of the present invention provides an uplink carrier aggregation maintenance method. Referring to FIG. 1, the uplink carrier aggregation maintenance method includes:

Step S10: The base station acquires a bias value of the primary carrier and a bias value of the secondary carrier;

The uplink carrier aggregation technology allows multiple cells to serve one terminal, and the cell accessed by the terminal is defined as a primary carrier, and multiple secondary carriers are added to the terminal through reconfiguration after access. The uplink synchronization status of the primary carrier and the secondary carrier are maintained by the primary timing advance group. In the process of providing data and service uplink, the base station obtains the offset value of the corresponding primary carrier and the offset value of the secondary carrier according to the uplink states of the primary carrier and the secondary carrier. In the actual network, the primary carrier and the secondary carrier may have asynchronous coverage. Therefore, the primary carrier offset and the secondary carrier offset may not be synchronized, which may cause the uplink communication performance to deteriorate, resulting in a decrease in communication quality. Therefore, the base station needs to perform specific adjustment according to the actual situation of the primary carrier offset value and the secondary carrier offset value.

Step S20: The base station performs digital filtering processing on the primary carrier time offset value and the secondary carrier time offset value to obtain a primary carrier filter value and a secondary carrier filter value.

In a real-world scenario, the offset value of the primary carrier and the secondary carrier offset obtained by the base station may fluctuate up and down due to environmental or hardware reasons, including signal interference or poor signal reception. However, this unconventional error has a great influence on the function process of adjusting the timing advance of the base station and the terminal to be adjusted, that is, the inaccuracy of the reference data during the adjustment process affects the accuracy of the adjustment parameter. Therefore, the base station first needs to filter and filter the acquired primary carrier offset value and load wave time offset value. In this embodiment, the base station filters the primary carrier time offset value and the secondary carrier time offset value by a digital filtering algorithm. In an implementation manner, the base station may adopt a median filtering algorithm, a limiting filtering algorithm, and a first order lag filtering algorithm. One or more of the primary carrier time offset and the secondary carrier time offset data are filtered to clean the discrete carrier time offset value, and the abnormal measurement value is removed, thereby obtaining a stable primary carrier offset value and auxiliary The carrier time offset value is set as the primary carrier filter value and the secondary carrier filter value respectively for subsequent calls.

Step S30, the base station performs weighting calculation on the primary carrier filter value and the secondary carrier filter value to obtain a time offset input value.

The base station obtains the primary carrier filter value and the secondary carrier filter value, that is, obtains the stable primary carrier filter value and the secondary carrier filter value, thereby ensuring the stability and reference of the subsequent adjustment of the primary carrier and the secondary carrier during the time offset adjustment process. Sex. The base station needs to calculate the adjustment object and the adjustment value in the uplink carrier aggregation according to the primary carrier filter value and the secondary carrier filter value. That is to say, the base station needs to implement the adjustment plan in a targeted manner according to the actual operating conditions of the current primary carrier and the secondary carrier. Therefore, in this embodiment, the base station uses a weighting calculation method to perform weighting calculation on the primary carrier filter value and the secondary carrier filter value, that is, according to the communication conditions of the primary carrier and the secondary carrier, preset corresponding weighting factors, and perform logical calculation to A time offset input value of the main timing advance group of the primary carrier and the secondary carrier is obtained.

The time-biased input value refers to a maintenance parameter for adjusting an uplink synchronization state of the primary carrier and the secondary carrier. According to the time-biased input value, the base station and the terminal to be adjusted can completely manage the uplink synchronization state in the uplink data channel, thereby The primary carrier and the secondary carrier are prevented from being offset from the normal transmission frame in the uplink state, thereby affecting the synchronization state of the uplink carrier.

In an embodiment, referring to FIG. 2, the step S30 may include:

Step S31: The base station acquires the first uplink error packet number of the primary carrier and the second uplink error packet number of the secondary carrier.

The weighting calculation of the primary carrier filter value and the secondary carrier filter value by the base station requires a weighting factor corresponding to each filter value. In this embodiment, a variable factor of the number of uplink error packets is introduced. The number of uplink error packets refers to a transmission abnormality of data packet loss or abnormal reception of data packets that occurs during transmission of communication data by each uplink carrier. The transmission abnormal state is recorded in the signal connection between the terminal to be adjusted and the base station. For example, the terminal to be adjusted sends the data packet to the base station, and the base station does not receive the uplink request after obtaining the upload request of the terminal to be adjusted. Adjusting the data packet uploaded by the terminal, or the data packet transmission interruption occurs when the base station receives the uploaded data packet, resulting in incomplete reception of the data packet, etc., and the lost data packet and the unreceived data that is not received this time may be incomplete. The data packet is recorded.

Since the terminal to be adjusted has the function of data packet transmission in the data transmission channels of the primary carrier and the secondary carrier, the base station can record the first uplink error packet number of the primary carrier and the second uplink error packet number of the secondary carrier. The first uplink error packet number and the second uplink error packet number may be used as reference objects of the weighting factors of the primary carrier filter value and the secondary carrier filter value.

Step S32: The base station determines, according to the first uplink error packet number and the second uplink error packet number, a first weighting factor of the primary carrier and a second weighting factor of the secondary carrier.

In the database of the base station, a first weighting factor corresponding to the first number of uplink error packets and a second weighting factor corresponding to the number of second uplink error packets are pre-set. That is, the uplink error packet data of the uplink carrier is mapped with respective weighting factors, and even if the number of uplink error packets is consistent, the weighting factors of different carriers may be different. In this embodiment, the more the number of uplink error packets, the corresponding weighting factor will also increase accordingly.

Step S33: The base station performs weighting calculation based on the primary carrier filter value, the secondary carrier filter value, the first weighting factor, and the second weighting factor to obtain a time offset input value.

After acquiring the first weighting factor and the second weighting factor, the base station may perform a logic operation according to the primary carrier filter value, the secondary carrier filter value, the first weighting factor, and the second weighting factor to obtain a specific time offset input value.

Assume that the two carriers in the above row are the background, and let a be the second weighting factor of the secondary carrier filter value.

Set the primary carrier filter value to TimeOffsetSmooth _pcc , the secondary carrier filter value to TimeOffsetSmooth _scc, and the time offset input value to TimeOffset _pTag , then substitute the above data into the following formula according to the specific base station weighting calculation method:

TimeOffset _pTag =(1-a)*TimeOffsetSmooth _pcc +a*TimeOffsetSmooth _SCC

If a is 0.5, the first weighting factor and the second weighting factor of the primary carrier filter value and the secondary carrier filter value are both 0.5, and at the same time, the time offset input value can be obtained by substituting into the formula.

Step S40: When the base station detects that the absolute value of the offset input value is greater than the first threshold, the data control command is acquired, and the data control command is sent to the terminal to be adjusted, so that the terminal to be adjusted performs synchronous adjustment of the carrier time advance amount.

After the base station obtains the time offset input value, it can determine the magnitude of the time offset input value, thereby determining whether it is necessary to adjust the time advance of the primary carrier and the secondary carrier in the current situation. One embodiment, the base station of a first predetermined threshold value TimeOffsetThr, the base station determines the absolute value of the magnitude between the _TimeOffset pTag TimeOffsetThr, if | TimeOffset pTag |> _{TimeOffsetThr,} then prove necessary to adjust the uplink carriers, the base station according to the following protocol The data control command (ie, TAC MACCE, Timing Advance Command MAC Control Element) is used to adjust the carrier timing advance of the terminal pTag to be adjusted to keep the uplink in synchronization; if |TimeOffset _pTag | ≤TimeOffsetThr, the processing ends.

In an embodiment, referring to FIG. 3, the step of acquiring the data control instruction in step S40 can be refined to:

Step S41: The base station performs calculation based on the primary carrier filter value and the first threshold to obtain a primary carrier adjustment value.

Step S42: The base station performs calculation based on the secondary carrier filter value and the first threshold to obtain a secondary carrier adjustment value.

The primary carrier filter value TimeOffsetSmooth _pcc is logically calculated with the first threshold TimeOffsetThr, such as TimeOffsetSmooth _pcc -TimeOffsetThr, to obtain the primary carrier adjustment value, and the secondary carrier filtered value TimeOffsetSmooth _scc is logically calculated with the first threshold TimeOffsetThr, such as TimeOffsetSmooth _scc -TimeOffsetThr, Secondary carrier adjustment value.

It can be understood that the primary carrier filter value and the secondary carrier filter value represent the synchronization adjustment value based on the primary carrier of the terminal to be adjusted and the synchronization adjustment value of the secondary carrier. It is mainly used for synchronous coordination of carrier time advances.

Step S43, the base station generates a data control instruction based on the primary carrier adjustment value and the secondary carrier adjustment value.

The data control instructions represent a specific manner of adjustments to be adjusted by the terminal. Wherein, the sixth bit in the data control instruction may use 0 to 63 to indicate the primary carrier adjustment value and the secondary carrier adjustment value, that is, after the base station sends the data control instruction to the terminal to be adjusted, the terminal may analyze the data control instruction. 6 bits, thereby obtaining a specific primary carrier adjustment value and a secondary carrier adjustment value, that is, the 6th bit of the base station time in the data control instruction determines a specific adjustment object (primary carrier and secondary carrier) and a specific time advance The amount of adjustment (advance or delay).

It should be noted that both the laboratory and the external field are verified. Before adopting this scheme, when the time difference between the uplink carrier and the secondary carrier of 20MHz+20MHz is 40Ts, the secondary carrier traffic is reduced to 20% of the theoretical traffic; After the scheme, the primary carrier and secondary carrier traffic can reach more than 95% of the theoretical traffic.

In the embodiment of the present invention, the base station obtains the offset value of the primary carrier and the offset value of the secondary carrier; the base station performs digital filtering processing on the primary carrier offset value and the secondary carrier time offset value to obtain the primary carrier filter value and the secondary carrier filter value; Performing a weighted calculation on the primary carrier filter value and the secondary carrier filter value to obtain a time offset input value; when the base station detects that the absolute value of the bias input value is greater than the first threshold, acquiring a data control command, and sending the data control command to The terminal is to be adjusted, so that the terminal to be adjusted performs synchronous adjustment of the carrier time advance amount. The embodiment of the invention avoids the uncoordinated uplink carrier synchronization in the networked scenario in which the primary carrier and the secondary carrier are not completely synchronized, resulting in a situation in which the communication quality is degraded, so that the communication quality is optimally improved, and the carrier network is reduced. The construction difficulty increases the communication quality of the uplink carrier aggregation.

The implementation of the present invention further provides another uplink carrier aggregation maintenance method. The difference between the foregoing embodiments is that the number of offset values of the secondary carrier acquired by the base station is one or more.

In this embodiment, since the number of terminals to be adjusted is more than one, the base station offset value and the secondary carrier time offset value acquired by the base station are more than one. However, the weighting calculation method for multiple secondary carriers also has a certain difference, and the technical principle of the implementation manner does not change, but the calculation mode changes.

In the case of a partial offset of the multiple secondary carriers acquired by the base station, the calculation formula of the time offset input value TimeOffset _pTag calculated in this embodiment is as follows:

Assume that the above three carriers are the background, n is 2, a1 is initially set to 0.2, a2 is initially set to 0.2, and TimeOffsetThr is set to 6Ts. The implementation scheme is as follows:

1. When the base station measures the primary carrier, the secondary carrier 1, and the secondary carrier 2, the offset values are recorded as TimeOffset _pcc , TimeOffset _scc1, and TimeOffset _scc2 .

2. The base station digitally filters the measured offset value, and obtains the corresponding filtered stable primary carrier when the offset value is recorded as TimeOffsetSmooth _pcc , the secondary carrier offset value TimeOffsetSmooth _scc1 and the secondary carrier offset value TimeOffsetSmooth _scc2 .

3. The base station calculates the time offset input value TimeOffset _{pTag of the pTag} , and the formula is as follows:

TimeOffset _pTag = (1-a1-a2)*TimeOffsetSmooth _pcc +a ₁ *TimeOffsetSmooth _SCC1 +

a ₂ *TimeOffsetSmooth _SCC2

The base station can dynamically adjust the value of ai according to the number of uplink error packets of the secondary carrier i. The specific method is that if the number of uplink error packets of the secondary carrier i increases, the ai value is increased; if the number of uplink error reports of the primary carrier increases, all the ai values are reduced. , increase the weight of the primary carrier.

4. The base station determines that |TimeOffset _pTag |>TA adjusts the threshold TimeOffsetThr, and then sends a TAC MACCE (Timing Advance Command MAC Control Element) according to the protocol, and adjusts the TA of the terminal pTag to keep the uplink in a synchronized state; TimeOffset _pTag | ≤ TA, end processing.

As shown in FIG. 6, the embodiment of the present invention further provides an uplink carrier aggregation maintenance method, where the uplink carrier aggregation maintenance method includes:

The S60 to be adjusted receives the data control command sent by the base station;

S61 to be adjusted to analyze the primary carrier adjustment value and the secondary carrier adjustment value in the acquisition instruction;

The S62 to be adjusted adjusts the time advance of the primary carrier according to the primary carrier adjustment value, and adjusts the timing advance of the secondary carrier according to the secondary carrier adjustment value.

The terminal to be adjusted adjusts the data transmission channel of the uplink primary carrier and the uplink secondary carrier of the terminal to be adjusted by receiving the data control command sent by the base station. By analyzing the primary carrier adjustment value and the secondary carrier adjustment value in the data control instruction, the to-be-adjusted terminal can parse out the primary carrier adjustment value and the secondary carrier adjustment value. According to the primary carrier adjustment value and the secondary carrier adjustment value, the terminal to be adjusted can accurately adjust the time advance amount of the acquired primary carrier and the time advancement amount of the secondary carrier.

By adjusting the time advance of the primary carrier and the timing advance of the secondary carrier, the terminal to be adjusted can coordinate the signal transmission of the primary carrier with the signal transmission of the carrier, thereby improving the uplink carrier synchronization efficiency of the terminal to be adjusted, thereby indirectly improving the communication efficiency. The communication efficiency and uplink performance of the terminal to be adjusted are improved.

Referring to FIG. 5, FIG. 5 is a schematic structural diagram of a device in a hardware operating environment involved in a method according to an embodiment of the present invention.

In the embodiment of the present invention, the terminal may be a PC, or may be a smart phone, a tablet computer, an e-book reader, an MP3 (Moving Picture Experts Group Audio Layer III) player, and an MP4 (Moving Picture Experts). Group Audio Layer IV, dynamic video experts compress standard audio layers 4) terminal devices such as players and portable computers.

As shown in FIG. 5, the base station may include a processor 1001, such as a CPU, a memory 1005, and a communication bus 1002. Among them, the communication bus 1002 is arranged to implement connection communication between the processor 1001 and the memory 1005. The memory 1005 may be a high speed RAM memory or a non-volatile memory such as a disk memory. The memory 1005 can also optionally be a storage device independent of the aforementioned processor 1001.

In an embodiment, the base station may further include a user interface, a network interface, a camera, an RF (Radio Frequency) circuit, a sensor, an audio circuit, a WiFi module, and the like. The user interface may include a display, an input unit such as a keyboard, and the optional user interface may also include a standard wired interface, a wireless interface. The network interface can optionally include a standard wired interface or a wireless interface (such as a WI-FI interface).

It will be understood by those skilled in the art that the base station structure shown in FIG. 5 does not constitute a limitation to a base station, and may include more or less components than those illustrated, or some components may be combined, or different component arrangements.

As shown in FIG. 5, an operating system, a network communication module, and an uplink carrier aggregation maintenance program may be included in the memory 1005 as a computer storage medium. The operating system is a program that manages and controls the hardware and software resources of the base station, and supports the operation of the uplink carrier aggregation maintenance program and other software and/or programs. The network communication module is arranged to enable communication between components within the memory 1005 and to communicate with other hardware and software in the base station.

An embodiment of the present invention provides an uplink carrier aggregation maintenance system. Referring to FIG. 4, the uplink carrier aggregation maintenance system includes a base station, where the base station includes:

The obtaining module 10 is configured to obtain a bias value of the primary carrier and a bias value of the secondary carrier;

The uplink carrier aggregation technology allows multiple cells to serve one terminal, and the cell accessed by the terminal is defined as a primary carrier, and multiple secondary carriers are added to the terminal through reconfiguration after access. The uplink synchronization status of the primary carrier and the secondary carrier are maintained by the primary timing advance group. In the process of providing the data and the service uplink, the acquiring module 10 obtains the offset value of the corresponding primary carrier and the offset value of the secondary carrier according to the uplink states of the primary carrier and the secondary carrier. In the actual network, the primary carrier and the secondary carrier may have asynchronous coverage. Therefore, the primary carrier offset and the secondary carrier offset may not be synchronized, which may cause the uplink communication performance to deteriorate, resulting in a decrease in communication quality. Therefore, the base station needs to perform specific adjustment according to the actual situation of the primary carrier offset value and the secondary carrier offset value.

The processing module 20 is configured to perform digital filtering processing on the primary carrier time offset value and the secondary carrier time offset value to obtain a primary carrier filter value and a secondary carrier filter value;

In a real-world scenario, the offset value of the primary carrier and the secondary carrier offset obtained by the base station may fluctuate up and down due to environmental or hardware reasons, including signal interference or poor signal reception. However, this unconventional error has a great influence on the function process of adjusting the timing advance of the base station and the terminal to be adjusted, that is, the inaccuracy of the reference data during the adjustment process affects the accuracy of the adjustment parameter. Therefore, the processing module 20 first needs to filter and filter the acquired primary carrier time offset value and the load wave time offset value. In this embodiment, the base station filters the primary carrier time offset value and the secondary carrier time offset value by a digital filtering algorithm.

In an embodiment, the processing module 20 may use one or more of a median filtering algorithm, a limiting filtering algorithm, and a first-order lag filtering algorithm to perform data filtering on the primary carrier time offset value and the secondary carrier time offset value. The discrete carrier time offset value is cleaned, and the abnormal measurement value is removed, thereby obtaining a stable primary carrier offset value and a secondary carrier time offset value, which are respectively set as a primary carrier filter value and a secondary carrier filter value for subsequent transfer.

The calculating module 30 is configured to perform weighting calculation on the primary carrier filter value and the secondary carrier filter value to obtain a time offset input value;

The base station obtains the primary carrier filter value and the secondary carrier filter value, that is, obtains the stable primary carrier filter value and the secondary carrier filter value, thereby ensuring the stability and reference of the subsequent adjustment of the primary carrier and the secondary carrier during the time offset adjustment process. Sex. The base station needs to calculate the adjustment object and the adjustment value in the uplink carrier aggregation according to the primary carrier filter value and the secondary carrier filter value. That is to say, the base station needs to implement the adjustment plan in a targeted manner according to the actual operating conditions of the current primary carrier and the secondary carrier. Therefore, in this embodiment, the calculation module 30 performs weighting calculation on the primary carrier filter value and the secondary carrier filter value by using a weighting calculation method, that is, presets a corresponding weighting factor according to the communication status of the primary carrier and the secondary carrier, and performs logical calculation. To obtain a time offset input value for adjusting the main timing advance group of the primary carrier and the secondary carrier.

In an embodiment, the calculation module 30 can be refined to:

The obtaining unit 31 is configured to acquire the first uplink error packet number of the primary carrier and the second uplink error packet number of the secondary carrier;

The weighting calculation of the primary carrier filter value and the secondary carrier filter value by the calculation module 30 requires a weighting factor corresponding to each filter value. In this embodiment, a variable factor of the number of uplink error packets is introduced. The number of uplink error packets refers to a transmission abnormality in which data packet loss or data packet reception is abnormal during transmission of communication data by each uplink carrier. The transmission abnormal state is recorded in the signal connection between the terminal to be adjusted and the base station. For example, the terminal to be adjusted sends the data packet to the base station, and the base station does not receive the uplink request after obtaining the upload request of the terminal to be adjusted. Adjusting the data packet uploaded by the terminal, or the data packet transmission interruption occurs when the base station receives the uploaded data packet, resulting in incomplete reception of the data packet, etc., and the lost data packet and the unreceived data that is not received this time may be incomplete. The data packet is recorded.

The acquiring unit 31 can record the first uplink error packet number of the primary carrier and the second uplink error packet number of the secondary carrier, because the terminal to be adjusted has the function of data packet transmission in the data transmission channels of the primary carrier and the secondary carrier. . The first uplink error packet number and the second uplink error packet number may be used as reference objects of the weighting factors of the primary carrier filter value and the secondary carrier filter value.

The determining unit 32 is configured to determine a first weighting factor of the primary carrier and a second weighting factor of the secondary carrier based on the first uplink error packet number and the second uplink error packet number;

The first calculating unit 33 is configured to perform weighting calculation based on the primary carrier filter value, the secondary carrier filter value, the first weighting factor, and the second weighting factor to obtain the time offset input value.

After acquiring the first weighting factor and the second weighting factor, the first calculating unit 33 may perform logic operations according to the primary carrier filter value, the secondary carrier filter value, the first weighting factor, and the second weighting factor to obtain a specific time offset. input value.

TimeOffset _pTag =(1-a)*TimeOffsetSmooth _pcc +a*TimeOffsetSmooth _SCC

The sending module 40 is configured to acquire a data control instruction when the offset input value is greater than the first threshold, and send the data control command to the terminal to be adjusted, so that the terminal to be adjusted performs carrier synchronization adjustment.

After the base station obtains the time offset input value, it can determine the magnitude of the time offset input value, thereby determining whether it is necessary to adjust the time advance of the primary carrier and the secondary carrier in the current situation. In an embodiment, the base station presets a first threshold TimeOffsetThr, and the sending module 40 determines the size between the absolute value of the TimeOffset _pTa g and the TimeOffsetThr. If |TimeOffset _pTag |>TimeOffsetThr, it proves that the uplink carrier needs to be adjusted. The carrier timing advance of the terminal pTag to be adjusted is adjusted according to the protocol to send the data control command (ie, TAC MACCE, Timing Advance Command MAC Control Element) to keep the uplink in synchronization; if |TimeOffset _pTag | ≤TimeOffsetThr, the processing ends.

In an embodiment, the step of acquiring the data control instruction in step S40 can be refined to:

The second calculating unit 41 is configured to perform calculation based on the primary carrier filter value and the first threshold to obtain a primary carrier adjustment value;

The third calculating unit 42 is configured to perform calculation based on the secondary carrier filter value and the first threshold to obtain a secondary carrier adjustment value;

The generating unit 43 is configured to generate a data control command based on the primary carrier adjustment value and the secondary carrier adjustment value.

Generally, the base station sends a data control command, and the terminal to be adjusted performs corresponding adjustment according to the obtained data control command. Referring to FIG. 4, optionally, the terminal to be adjusted includes:

The receiving module 50 is configured to receive a data control instruction sent by the base station;

The analyzing module 60 is configured to analyze the primary carrier adjustment value and the secondary carrier adjustment value in the acquisition instruction;

The adjusting module 70 is configured to adjust a timing advance of the primary carrier according to the primary carrier adjustment value, and adjust a timing advance of the secondary carrier according to the secondary carrier adjustment value.

In the embodiment of the present invention, the acquisition module obtains the offset value of the primary carrier and the offset value of the secondary carrier; the processing module performs digital filtering processing on the primary carrier offset value and the secondary carrier offset value to obtain the primary carrier filter value and the secondary carrier filter value. The calculation module performs weighting calculation on the primary carrier filter value and the secondary carrier filter value to obtain the time offset input value; when the absolute value of the bias input value is greater than the first threshold when the sending module detects, the data control instruction is acquired, and the data is acquired The control command is sent to the terminal to be adjusted, so that the terminal to be adjusted performs synchronous adjustment of the carrier time advance amount. The embodiment of the present invention avoids the uncoordinated synchronization of the uplink carriers in the networked scenario in which the primary carrier and the secondary carrier are not completely covered, resulting in a situation in which the communication quality is degraded, so that the communication quality is optimally improved, and the network of the operator is reduced. The construction difficulty increases the communication quality of the uplink carrier aggregation.

Further, an embodiment of the present invention further provides an uplink carrier aggregation maintenance system, which is different from the previous embodiment in that the number of offset values of the secondary carrier acquired by the base station is one or more.

a ₂ *TimeOffsetSmooth _SCC2

The base station can dynamically adjust the value of ai according to the number of uplink error packets of the secondary carrier i, and can increase the ai value when the number of uplink error packets of the secondary carrier i increases; if the number of uplink error reports of the primary carrier increases, all the ai values are reduced. Increase the weight of the primary carrier.

An embodiment of the present invention provides an uplink carrier aggregation maintenance apparatus, where the uplink carrier aggregation maintenance apparatus includes: a memory, a processor, a communication bus, and an uplink carrier aggregation maintenance program stored in the memory,

The embodiment of the invention further provides a computer readable storage medium storing one or more programs, the one or more programs being further executable by one or more processors for use to:

The embodiment of the computer readable storage medium of the embodiment of the present invention is substantially the same as the foregoing embodiment of the uplink carrier aggregation maintenance method and the base station, and details are not described herein again.

It is to be understood that the term "comprises", "comprising", or any other variants thereof, is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes those elements. It also includes other elements that are not explicitly listed, or elements that are inherent to such a process, method, article, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and functional blocks/units of the methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical units; for example, one physical component may have multiple functions, or one function or step may be composed of several physical The components work together. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer readable medium, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and nonvolatile, implemented in any method or technology for storing information, such as computer readable instructions, data structures, program modules, or other data. , removable and non-removable media. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridge, magnetic tape, magnetic disk storage or other magnetic storage device, or may Any other medium used to store the desired information and that can be accessed by the computer. Moreover, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and can include any information delivery media.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims

An uplink carrier aggregation maintenance method, where the uplink carrier aggregation maintenance method includes:

The base station obtains the offset value of the primary carrier and the offset value of the secondary carrier (S10);

The base station performs digital filtering processing on the primary carrier offset value and the secondary carrier offset value to obtain a primary carrier filter value and a secondary carrier filter value (S20);

The base station performs weighting calculation on the primary carrier filter value and the secondary carrier filter value to obtain a time offset input value (S30);

When the base station detects that the absolute value of the offset input value is greater than the first threshold, the data control command is acquired, and the data control command is sent to the terminal to be adjusted, so that the terminal to be adjusted performs synchronous adjustment of the carrier time advance amount (S40).
The uplink carrier aggregation maintenance method according to claim 1, wherein the step of performing weighting calculation on the primary carrier filter value and the secondary carrier filter value by the base station to obtain the time offset input value (S30) comprises:

The base station acquires the first uplink error packet number of the primary carrier and the second uplink error packet number of the secondary carrier (S31);

The base station determines a first weighting factor of the primary carrier and a second weighting factor of the secondary carrier based on the first uplink error packet number and the second uplink error packet number (S32);

The base station performs weighting calculation based on the primary carrier filter value, the secondary carrier filter value, the first weighting factor, and the second weighting factor to obtain a time offset input value (S33).
The uplink carrier aggregation maintenance method according to claim 1, wherein the step of acquiring a data control instruction comprises:

The base station performs calculation based on the primary carrier filter value and the first threshold to obtain a primary carrier adjustment value (S41);

The base station performs calculation based on the secondary carrier filter value and the first threshold to obtain a secondary carrier adjustment value (S42);

The base station generates a data control command based on the primary carrier adjustment value and the secondary carrier adjustment value (S43).
The uplink carrier aggregation maintenance method according to claim 1, wherein the digital filtering algorithm comprises one or more of a median filtering algorithm, a limiting filtering algorithm, and a first-order lag filtering algorithm.
The uplink carrier aggregation maintenance method according to claim 1, wherein the number of offset values of the secondary carrier acquired by the base station is one or more.
An uplink carrier aggregation maintenance method, where the uplink carrier aggregation maintenance method includes:

The terminal to be adjusted receives the data control command sent by the base station (S60);

The primary carrier adjustment value and the secondary carrier adjustment value in the instruction to be adjusted are obtained (S61);

The terminal to be adjusted adjusts the timing advance of the primary carrier according to the primary carrier adjustment value, and adjusts the timing advance of the secondary carrier according to the secondary carrier adjustment value (S62).
An uplink carrier aggregation maintenance system, where the uplink carrier aggregation maintenance system includes a base station, and the base station includes:

The obtaining module (10) is configured to obtain a bias value of the primary carrier and a bias value of the secondary carrier;

The processing module (20) is configured to perform digital filtering processing on the primary carrier time offset value and the secondary carrier time offset value to obtain a primary carrier filter value and a secondary carrier filter value;

The calculating module (30) is configured to perform weighting calculation on the primary carrier filter value and the secondary carrier filter value to obtain the time offset input value;

The sending module (40) is configured to: when detecting that the bias input value is greater than the first threshold, acquire a data control command, and send the data control command to the terminal to be adjusted, so that the terminal to be adjusted performs carrier synchronization adjustment.
An uplink carrier aggregation maintenance apparatus, the apparatus comprising: a memory, a processor, a communication bus, and an uplink carrier aggregation maintenance program stored on the memory,

The communication bus is configured to implement a communication connection between the processor and the memory;

The processor is configured to perform the Internet-based uplink carrier aggregation maintenance procedure to implement the steps of the uplink carrier aggregation maintenance method according to any one of claims 1 to 6.
A computer readable storage medium, wherein the computer readable storage medium stores an uplink carrier aggregation maintenance program, and the uplink carrier aggregation maintenance program is executed by a processor to implement any one of claims 1 to 6 The steps of the uplink carrier aggregation maintenance method.