WO2016146014A1

WO2016146014A1 - Frequency adjustment method and apparatus applied to mobile communications

Info

Publication number: WO2016146014A1
Application number: PCT/CN2016/076033
Authority: WO
Inventors: 白炜
Original assignee: 北京佰才邦技术有限公司
Priority date: 2015-03-19
Filing date: 2016-03-10
Publication date: 2016-09-22

Abstract

Disclosed are a frequency adjustment method and apparatus applied to mobile communications. The frequency adjustment method applied to mobile communications comprises: a mobile communication network device acquiring a monitoring parameter of a target cell, wherein the target cell is any cell in a monitoring area of the mobile communication network device, the monitoring parameter indicates the level of an interference monitored from the target cell to a target device, and the target device is a device different from the mobile communication network device; the mobile communication network device judging whether or not the monitoring parameter is lower than a pre-set threshold value; and the mobile communication network device triggering the adjustment of the working frequency of the target cell in the case where the monitoring parameter is judged to be lower than the pre-set threshold value. By means of the present invention, the problem in the prior art that a mobile communication system does not support dynamic frequency adjustment is solved, thereby achieving the effect of improving the flexibility of the mobile communication system on a license-freed frequency band.

Description

Frequency adjustment method and device applied in mobile communication

Technical field

The present invention relates to the field of communications, and in particular to a frequency adjustment method and apparatus for use in mobile communications.

Background technique

A mobile communication system refers to an operator providing communication services for user terminals (such as mobile phones) by deploying radio access network devices (such as base stations) and core network devices (such as Home Location Registers, HLRs). system. Mobile communication has experienced the first generation, the second generation, the third generation, and the fourth generation. The first generation of mobile communication refers to the original analog, voice-only cellular phone standard, mainly using analog technology and Frequency Division Multiple Access (FDMA) access method; second generation mobile Communication introduces digital technology to improve network capacity, improve voice quality and confidentiality, with Global System for Mobile Communication (GSM) and Code Division Multiple Access (Code Division Multiple Access). Referred to as CDMA IS-95); third-generation mobile communication mainly refers to Code Division Multiple Access (CDMA) 2000, and Wideband Code Division Multiple Access (Wideband Code Division Multiple Access). For WCDMA), Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) technology is based on code division multiple access as the access technology; fourth generation mobile communication The standards of the system are relatively uniform internationally, and it is the 3rd Generation Partnership of the International Organization for Standardization. Project, abbreviated as 3GPP) Long Term Evolution/Long Term Evolution-Advanced (LTE/LTE-A), and its downlink is based on Orthogonal Frequency Division Multiple Access (OFDMA). The uplink is based on the Single Carrier-Frequency Division Multiple Access (SC-FDMA) access mode, and achieves a downlink peak rate of 1 Gbps according to a flexible bandwidth and an adaptive modulation and coding scheme. High-speed transmission with an uplink peak rate of 500 Mbps. FIG. 1 is a schematic diagram of a basic architecture of a mobile communication network. As shown in FIG. 1, a basic architecture of a mobile communication network is schematically illustrated.

Although the mobile communication system has experienced rapid changes in technology from the first generation to the fourth generation, the transmission rate has also greatly increased, but the basic coverage principle is based on the cellular network, that is, the operator needs to deploy multiple mobiles. a communication base station, each base station covers a certain spatial range, which is called a cell or a sector; when the user terminal enters the coverage of a certain base station, the base station serves the user; when the user moves from the coverage of a base station to When the coverage of another base station is reached, the user needs to perform cell handover to maintain continuity of communication. 2 is a schematic diagram of a conventional cellular mobile communication.

Wireless Fidelity (WiFi) is a general term for the 802.11 series of technologies developed by the International Electrotechnical Organization IEEE, such as 802.11a/g/n/ac. WiFi is mainly used for local wireless communication, and the coverage is relatively small, which is a simple and relatively low-cost wireless communication means. Since the WiFi design was initially positioned to provide local wireless LAN services, and its wireless communication device is directly directed to the end user, an unlicensed band that can be used free of charge is used. The original version of WiFi works at 2.4 GHz, but because of the small available bandwidth in the 2.4 GHz band, there are more wireless transmitting devices operating in the 2.4 GHz band, resulting in more WiFi performance at 2.4 GHz has degraded. WiFi has discovered a new communication frequency of 5 GHz in later versions (Note: 5 GHz described here does not refer to a single frequency point, but refers to each frequency band around 5 GHz, which can be understood as from 4.9 GHz to 5.9 GHz. In the 5 GHz band, the 5 GHz has the characteristics of wide available frequency spectrum, continuous spectrum, and few interference sources. Currently, the most advanced 802.11ac technology can use 160 MHz bandwidth communication at 5 GHz to achieve an air interface transmission rate close to 1 Gbps. However, although the 5 GHz band has the above advantages, the 5.25 to 5.35 GHz and 5.47 to 5.725 GHz are the operating bands of the global radar system. In order to avoid interference with the radar system by the wireless communication devices operating in the 5 GHz band, the requirements of these devices are excluded. In addition to conventional items such as power and spectrum, the requirements for Dynamic Frequency Selection (DFS) are also added.

Dynamic frequency selection refers to a method in which a wireless communication device selects a frequency that can be used for transmission and reception by detecting the quality of a plurality of channels. At present, in order to protect the radar system, countries all over the world have put forward basically the same requirements for wireless communication equipment working at 5 GHz frequency. Table 1 below is the requirement for DFS.

Table 1 DFS requirements

项目project	指标index
DFS检测门限DFS detection threshold	-62dBm-62dBm
检测概率Detection probability	60％60%
信道可用度检查时间Channel availability check time	＞＝60秒>=60 seconds
信道转移时间Channel transfer time	＜＝10秒<=10 seconds
信道关闭发射时间Channel off transmission time	＜＝1秒<=1 seconds
禁止占用期Prohibition period	＞＝30分钟>=30 minutes

For mobile communications, although the fourth-generation mobile communication system LTE/LTE-A can already support higher data transmission rates, with the emergence of various mobile Internet applications, the demand for mobile data traffic is increasing. . In order to address the growing demand for data traffic and the growing shortage of radio frequencies, 3GPP has also begun research on the application of LTE systems in unlicensed bands to increase the available bandwidth for LTE systems. The target unlicensed band currently discussed by the 3GPP also focuses on 5 GHz.

As mentioned earlier, since the LTE system is currently considering communication on the 5 GHz unlicensed band, it will also be subject to mandatory requirements for supporting DFS functions. For WiFi, since it is currently mainly used for local wireless LAN access to provide broadband data transmission, and the process of connection establishment is relatively simple, the requirements of DFS will not be seriously affected. For an LTE system with a mobile communication gene, since one base station connects multiple user terminals and has a relatively complicated access and authentication process, if only the simplest disconnection is used, the frequency is adjusted, and the frequency is changed again. If the DFS is connected, it will cause a poor user experience for users who are communicating/talking, causing problems such as disconnection, data download failure, and the like.

In addition, any existing mobile communication system including the LTE system does not support dynamic frequency selection because the previously used licensed frequency bands do not need to circumvent the interference from devices of other systems.

In view of the problem that the mobile communication system does not support dynamic frequency adjustment in the prior art, an effective solution has not been proposed yet.

Summary of the invention

The main object of the present invention is to provide a frequency adjustment method and apparatus for use in mobile communication to solve the problem that the mobile communication system does not support dynamic frequency adjustment in the prior art.

In order to achieve the above object, according to an aspect of an embodiment of the present invention, a frequency adjustment method applied in mobile communication is provided.

The frequency adjustment method applied in mobile communication according to the present invention includes: the mobile communication network device acquires monitoring parameters of the target cell, wherein the target cell is any cell under the monitoring area of the mobile communication network device, The monitoring parameter indicates the monitored interference level from the target device to the target cell, the target device is a device different from the mobile communication network device; the mobile communication network device determines whether the monitoring parameter is lower than a predetermined threshold; and the mobile communication network device triggers adjusting an operating frequency of the target cell if it is determined that the monitoring parameter is lower than the predetermined threshold.

Further, the monitoring parameter includes: a compliance rate of the guaranteed rate service in the target cell, a correct rate of the target cell transmission data packet, an interference level of the target cell, or the target cell works on the unlicensed frequency band. The time ratio is the ratio of the first duration to the second duration, the first duration is the working duration of the target cell on the unlicensed frequency band, and the second duration is the opposite The duration of the monitoring time window in which the target cell performs monitoring.

Further, when the monitoring parameter is the compliance rate of the guaranteed rate service in the target cell, the acquiring, by the mobile communication network device, the monitoring parameter of the target cell includes: the mobile communication network device monitoring each of the guaranteed rate services the bit rate; the mobile communication network device determines a guaranteed rate of actual service bit rate W _i V _i V _i reaches the target rate guaranteed service rate of the W _i ', where, i takes 1 sequentially to n, n being the said target cell within the total number of guaranteed service rate; communication network if the mobile device determines that the actual bit rate reaches the target rate V _i V _i 'is determined to ensure that the service rate W _i And the mobile communication network device calculates a ratio of the number of the guaranteed rate services that meets the standard to the total number of the guaranteed rate services in the target cell, and obtains a standard of the guaranteed rate service in the target cell. rate.

Further, when the monitoring parameter is the correct rate of the data packet transmitted by the target cell, the acquiring, by the mobile communication network device, the monitoring parameter of the target cell includes: acquiring, by the mobile communication network device, the target cell in a target time period The total number of transmissions and the number of successful transmissions of the data transmission within the network; and the ratio of the number of successful transmissions to the total number of transmissions by the mobile communication network device to obtain the correct rate of the data packet transmitted by the target cell.

Further, the data transmission includes an uplink transmission, where the mobile communication network device calculates a ratio of the number of successful transmissions to the total number of transmissions, and obtains a correct rate of the target cell transmission data packet, the mobile communication The acquiring, by the network device, the monitoring parameter of the target cell further includes: the mobile communication network device acquiring physical layer receiving and demodulating of the mobile communication network device; and determining, by the mobile communication network device, whether the physical layer receiving demodulation is successful; When the mobile communication network device determines that the physical layer receives the demodulation successfully, it determines that the uplink transmission is successful.

Further, the data transmission includes a downlink transmission, where the mobile communication network device calculates a ratio of the number of successful transmissions to the total number of transmissions, and obtains a correct rate of the target cell transmission data packet, the mobile communication The acquiring, by the network device, the monitoring parameter of the target cell further includes: the mobile communication network device acquiring the physical layer receiving the demodulation feedback of the target terminal, wherein the target terminal is the terminal performing the downlink transmission with the mobile communication network device; Determining, by the mobile communication network device, whether the demodulation feedback is received by the physical layer is an ACK; and determining, by the mobile communication network device, that the physical layer receives demodulation feedback as the ACK, determining the downlink transmission success.

Further, when the monitoring parameter is an interference level of the target cell, the mobile communication network is configured The monitoring parameter of the target cell includes: the mobile communication network device determines that the uplink interference power of the target cell is an uplink interference level of the target cell; and the mobile communication network device receives the power according to the reference signal reported by the target terminal. And determining, by the reference signal reception quality, a downlink interference level of the target cell, wherein the target terminal is a terminal that communicates with the mobile communication network device; and the mobile communication network device calculates the uplink interference level and the The average of the downlink interference levels is obtained as the interference level of the target cell.

Further, when the monitoring parameter is a time ratio of the target cell working on the unlicensed frequency band, the acquiring, by the mobile communication network device, the monitoring parameter of the target cell includes: acquiring, by the mobile communication network device, the first duration And the second duration; and the mobile communication network device calculates a ratio of the first duration to the second duration to obtain a proportion of time that the target cell works on the unlicensed frequency band.

In order to achieve the above object, according to another aspect of an embodiment of the present invention, there is provided a frequency adjustment apparatus for use in mobile communication, which frequency adjustment apparatus can be used to perform any of the applications provided by the above-described contents of the present invention on a mobile Frequency adjustment method in communication.

The frequency adjustment apparatus applied in the mobile communication according to the present invention is applied to a mobile communication network device, and the frequency adjustment apparatus includes: an acquisition unit, configured to acquire a monitoring parameter of the target cell, wherein the target cell is in the mobile Any one of the cells under the monitoring area of the communication network device, the monitoring parameter indicating the monitored interference level from the target device to the target cell, the target device being a device different from the mobile communication network device; a unit, configured to determine whether the monitoring parameter is lower than a predetermined threshold, and a triggering unit, configured to trigger to adjust an operating frequency of the target cell if it is determined that the monitoring parameter is lower than the predetermined threshold.

Further, when the monitoring parameter is the compliance rate of the guaranteed rate service in the target cell, the acquiring unit includes: a monitoring module, configured to monitor a bit rate of each of the guaranteed rate services; and a first determining module, the actual bit rate for determining V _i W _i guaranteed rate traffic has reached the target rate guaranteed service rate of the W _i V _i ', where, i takes 1 sequentially to n, n being the target cell within the guaranteed rate the total number of service; a first determining module configured to in a case where it is determined that the actual bit rate reaches the target rate V _i V _i 'to determine the service rate guarantee compliance W _i; and a first calculation module And calculating a ratio of the number of the guaranteed rate services that meet the target to the total number of the guaranteed rate services in the target cell, and obtaining a compliance rate of the guaranteed rate service in the target cell.

Further, when the monitoring parameter is the correct rate of the data packet transmitted by the target cell, the acquiring unit includes: a first acquiring module, configured to acquire a total transmission of data transmission of the target cell in a target time period The number of times and the number of successful transmissions; and a second calculation module, configured to calculate a ratio of the number of successful transmissions to the total number of transmissions, to obtain a correct rate of the target cell transmission data packet.

Further, the data transmission includes an uplink transmission, and the acquiring unit further includes: a second acquiring module, configured to calculate, by the second calculating module, a ratio of the number of successful transmissions to the total number of transmissions, to obtain the Acquiring the physical layer receiving demodulation of the mobile communication network device before the correct rate of the data packet is transmitted by the target cell; the second determining module is configured to determine whether the physical layer receiving demodulation is successful; and the second determining module is configured to: When it is determined that the physical layer receives the demodulation successfully, it is determined that the uplink transmission is successful.

Further, the data transmission includes a downlink transmission, and the acquiring unit further includes: a third acquiring module, configured to calculate, by the second calculating module, a ratio of the number of successful transmissions to the total number of transmissions, to obtain the Before the target cell transmits the correct rate of the data packet, the physical layer of the target terminal receives the demodulation feedback, where the target terminal is the terminal that performs the downlink transmission with the mobile communication network device, and the third determining module is configured to: Determining whether the physical layer receives the demodulation feedback is an ACK; and the third determining module is configured to determine that the downlink transmission is successful if it is determined that the physical layer receives the demodulation feedback as the ACK.

Further, when the monitoring parameter is the interference level of the target cell, the acquiring unit includes: a fourth determining module, configured to determine that the uplink interference power of the target cell is an uplink interference level of the target cell a fifth determining module, configured to determine a downlink interference level of the target cell according to a reference signal received power and a reference signal received quality reported by the target terminal, where the target terminal is a terminal that communicates with the mobile communication network device And a third calculating module, configured to calculate an average of the uplink interference level and the downlink interference level, to obtain an interference level of the target cell.

Further, the acquiring unit includes: a fourth acquiring module, configured to acquire the first duration and the second duration, when the monitoring parameter is a time ratio of the target cell working on the unlicensed frequency band; And a fourth calculating module, configured to calculate a ratio of the first duration to the second duration, to obtain a proportion of time that the target cell works on the unlicensed frequency band.

Further, the device is a base station of the mobile communication network device.

According to the present invention, a monitoring parameter of a target cell is acquired by using a mobile communication network device, wherein the target cell is any cell under the monitoring area of the mobile communication network device, and the monitoring parameter indicates that the monitored target device is from the target device. The interference level of the target cell, the target device is a device that is different from the mobile communication network device; the mobile communication network device determines whether the monitoring parameter is lower than a predetermined threshold; and the mobile communication network device When it is determined that the monitoring parameter is lower than the predetermined threshold, triggering adjustment of an operating frequency of the target cell. By acquiring the monitoring parameter indicating the overall communication state of the cell of the target cell, and triggering the adjustment of the working frequency of the target cell when the monitoring parameter is lower than the predetermined threshold, the mobile communication system capable of working in the unlicensed frequency band is realized. The flexible support of dynamic frequency selection and adjustment solves the problem that the mobile communication system does not support dynamic frequency adjustment in the prior art, thereby achieving the effect of improving the flexibility of the mobile communication system in the license-free frequency band, and operating using the mobile communication system. Operators are more flexible in network planning on the unlicensed band to avoid interference.

DRAWINGS

The accompanying drawings, which are incorporated in the claims In the drawing:

1 is a schematic diagram of a basic architecture of a mobile communication network;

2 is a schematic diagram of a conventional cellular mobile communication;

3 is a flowchart of a frequency adjustment method applied in mobile communication according to an embodiment of the present invention;

4 is a schematic diagram of a frequency adjustment apparatus applied in mobile communication according to an embodiment of the present invention.

detailed description

It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be Mutual combination. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is an embodiment of the invention, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order. It will be understood that the data so used may be interchanged where appropriate to facilitate the embodiments of the invention described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices.

The specific technology of the mobile communication described in the embodiments of the present invention is not limited, and may be WCDMA, CDMA2000, TD-SCDMA, Worldwide Interoperability for Microwave Access (Wimax), LTE/LTE-A, and subsequent The fifth, sixth and Nth generation mobile communication technologies.

The terminal described in this alternative embodiment refers to a terminal side product that can support a communication protocol of a land mobile communication system, and a modem module (Wireless Modem) of a special communication, which can be various types such as a mobile phone, a tablet computer, and a data card. The terminal form is integrated to complete the communication function.

The embodiment of the present invention provides a frequency adjustment method applied in mobile communication, and FIG. 3 is a flowchart of a frequency adjustment method applied in mobile communication according to an embodiment of the present invention. As shown in FIG. 3, the frequency adjustment method of the application in mobile communication includes the following steps S102 to S106:

Step S102: The mobile communication network device acquires the monitoring parameter of the target cell, where the target cell is any cell under the monitoring area of the mobile communication network device, and the monitoring parameter indicates the monitored interference level from the target device to the target cell, and the target The device is a device that is different from the mobile communication network device. Specifically, the mobile communication network device obtains monitoring parameters of interest by monitoring the overall communication state of the cell of the target cell, and the monitoring parameters may be used to describe the overall target cell. Satisfactory situation, reflecting that the target is less than the interference level to the target device, the so-called target device refers to any other device that is different from the mobile communication network device.

Step S104: The mobile communication network device determines whether the monitoring parameter is lower than a predetermined threshold.

Step S106: The mobile communication network device triggers to adjust the working frequency of the target cell when it is determined that the monitoring parameter is lower than a predetermined threshold. Specifically, the mobile communication network device may trigger the adjustment of the working frequency of the target cell by using a sending command. In an optional embodiment, the mobile communication network device may send a trigger command to the target cell, and the working frequency of the target cell is determined by the current The operating frequency is adjusted to a frequency that is different from the current operating frequency.

The frequency adjustment method applied in the mobile communication provided by the embodiment of the present invention acquires the monitoring parameter indicating the overall communication state of the cell of the target cell, and triggers the adjustment of the target cell when the monitoring parameter is lower than a predetermined threshold. The working frequency realizes that the mobile communication system working in the unlicensed frequency band can flexibly support dynamic frequency selection and adjustment, and solves the problem that the mobile communication system does not support dynamic frequency adjustment in the prior art, thereby improving the mobile communication system. The flexibility of the unlicensed band enables operators using mobile communication systems to operate more flexibly on the unlicensed band to avoid interference.

In the embodiment of the present invention, the monitoring parameter may be any one of the following parameters: a rate of compliance of a guaranteed rate service (GBR) in the target cell, a correct rate of the data packet transmitted by the target cell, and interference of the target cell. The ratio of the horizontal and target cells working in the unlicensed frequency band, wherein the time ratio is the ratio of the first duration to the second duration, the first duration is the working duration of the target cell on the unlicensed frequency band, and the second duration is the target duration The length of time that the cell monitors the monitoring time window. Correspondingly, the predetermined threshold includes a threshold corresponding to different monitoring parameters, and may be set according to actual needs in the actual application process. In the embodiment of the present invention, for the monitoring parameter is the compliance rate of the guaranteed rate service in the target cell, The predetermined threshold may be taken as 85%; for the case where the monitoring parameter is the correct rate of the data packet transmitted by the target cell, the predetermined threshold may be taken as 70%; for the case where the monitoring parameter is the interference level of the target cell, the predetermined threshold may be taken as -70dbm; The parameter is the proportion of the time that the target cell operates on the unlicensed band, and the predetermined threshold may be 0.3 or 0.5.

The following specifically combines different monitoring parameters to illustrate the specific manner in which the mobile communication network device acquires the monitoring parameters of the target cell:

For the case where the monitoring parameter is the compliance rate of the guaranteed rate service in the target cell, the mobile communication system classifies the service when each service is established, and is classified into a guaranteed rate service (GBR) and a non-guaranteed rate service (non- GBR). The system needs to record all guaranteed rate services and record the guaranteed bit rate of the service. During the operation of the system, it is monitored whether each guaranteed rate service has reached its target rate, and if not, it is recorded as a non-compliant service. In a period of time, all the guaranteed guaranteed rate services and the proportion of all guaranteed rate services are used as overall satisfaction parameters. Specifically, the mobile communication network device monitors the bit rate of each guaranteed rate service; the mobile communication network device determines the guarantee the actual bit rate V _i W _i of traffic rate reaches the target rate-guaranteed service rate of the W _i V _i ', where, i order to get a total number n, n being the target cell guaranteed service rate; mobile communication network device Determining that the guaranteed rate service W _{i is up to the} standard in the case where it is determined that the actual bit rate V _i reaches the target rate V _i '; and the mobile communication network device calculates the number of guaranteed rate services that determine the compliance and the total guaranteed rate service in the target cell The ratio of the number is obtained, and the compliance rate of the guaranteed rate service in the target cell is obtained.

Table 2 below shows the classification of GBR services and the guaranteed rates of various services in the LTE system:

Table 2 Requirements for GBR services in LTE systems

For the case that the monitoring parameter is the correct rate of the data packet transmitted by the target cell, the mobile communication network device may acquire the total number of transmissions and the number of successful transmissions of the data transmission of the target cell in the target time period, and then calculate the number of successful transmissions and the total number of transmissions. Proportion, the correct rate of the data packet transmitted by the target cell is obtained.

Specifically, the data transmission includes an uplink transmission and a downlink transmission. For the uplink transmission, the mobile communication network device calculates the ratio of the number of successful transmissions to the total number of transmissions, and obtains the correct rate of the target cell transmission data packet, and the mobile communication network device acquires the target cell. The monitoring parameters further include: the mobile communication network device acquires the physical layer receiving demodulation of the mobile communication network device; the mobile communication network device determines whether the physical layer receives the demodulation successfully; and the mobile communication network device determines that the physical layer receives the demodulation successfully. In the case, it is determined that the uplink transmission is successful.

Taking the LTE system as an example, for each upload transmission, the LTE base station needs to count the physical layer receiving demodulation. Row data, if correctly demodulated, is marked as successful, and vice versa as failure. The base station side counts all transmissions over a period of time, using all the correct transmission times and the proportion of all transmission times as the monitoring parameters.

For the downlink transmission, before the mobile communication network device calculates the ratio of the number of successful transmissions to the total number of transmissions, and obtains the correct rate of the target cell transmission data packet, the monitoring parameter of the mobile communication network device acquiring the target cell further includes: the mobile communication network device acquires the target. The physical layer of the terminal receives demodulation feedback, wherein the target terminal is a terminal that performs downlink transmission with the mobile communication network device; the mobile communication network device determines whether the physical layer receives demodulation feedback is an ACK; and the mobile communication network device determines the physical layer When the demodulation feedback is received as an ACK, it is determined that the downlink transmission is successful.

For the LTE system, each transmission lasts for 1 ms. For each downlink transmission, the base station of the LTE system needs to receive the demodulation feedback from the physical layer of the statistical terminal. If it is ACK, it is considered successful, and if it is NACK, it is considered as failure.

For the case where the monitoring parameter is the interference level of the target cell, in the LTE system, the specific manner in which the mobile communication network device acquires the monitoring parameter of the target cell is:

First, the mobile communication network device determines that the uplink interference power of the target cell is the uplink interference level of the target cell. Specifically, the base station side can perform statistics on the uplink signal interference noise ratio (SINR), and calculate the final The level of interference.

The mobile communication network device determines the downlink interference level of the target cell according to the reference signal received by the target terminal (Reference Signal Received Power, RSRP for short) and the reference signal received quality (RSRQ), wherein the target terminal A terminal that communicates with a mobile communication network device. Specifically, the specific calculation manner of the downlink interference level is: the mobile communication network device first receives the reference signal received power RSRP and the reference signal received quality RSRQ reported by the target terminal; and then calculates the mobile communication according to the reference signal received power RSRP and the reference signal received quality RSRQ. The total received power of the network device, where

Then, the mobile communication network device calculates a downlink interference level I of the target cell according to the total received power P, the reference signal received power RSRP, and the average noise power N of the mobile communication network device, where I=P-RSRP-N, where The communication network device can set the average noise power N according to the statistical characteristics of the noise.

Then, the mobile communication network device calculates an average of the uplink interference level and the downlink interference level to obtain an interference level of the target cell.

It should be noted that, for the calculation of the uplink interference level and the downlink interference level, if it is from multiple terminals, it is necessary to average the multiple uplink interference levels first, and average the multiple downlink interference levels.

For the case that the monitoring parameter is the proportion of the time that the target cell works on the unlicensed frequency band, the monitoring parameter of the mobile communication network device acquiring the target cell includes: the mobile communication network device acquiring the working duration of the target cell on the unlicensed frequency band as the first duration, And obtaining a monitoring time window for monitoring the target cell as the second duration, where the length of the monitoring time window for monitoring the target cell is the longest duration of the target cell in the unlicensed band; and then calculating the first The ratio of the duration to the second duration gives the proportion of time the target cell is operating on the unlicensed band. For example, if the target cell works for 30 seconds in an unlicensed band, and the target cell can use the maximum length of the unlicensed band for 60 seconds, the monitoring parameter is 0.5.

It should be noted that, in the frequency adjustment method applied in the mobile communication provided by the embodiment of the present invention, in the unlicensed frequency band, there are other solutions to meet the regulations and complex interference environments of the frequency band, such as listening first. Mechanism (Listen Before Talk, LBT for short), discontinuous transmission (Discontinuous Transmission) DTX), Carrier Selection, and so on. While these techniques may also be applied in mobile communications, the triggering conditions for dynamic frequency selection proposed by the present invention are equally applicable to the three techniques mentioned herein.

The embodiment of the invention also provides a frequency adjusting device applied in mobile communication. The device may be used in a mobile communication network device, and the frequency adjustment device in the mobile communication provided by the embodiment of the present invention is used to perform the frequency adjustment method in the mobile communication provided by the embodiment of the present invention. The frequency adjustment method of the application in the mobile communication can also be performed by the frequency adjustment apparatus applied in the mobile communication provided by the embodiment of the present invention.

4 is a schematic diagram of a frequency adjustment apparatus applied in mobile communication according to an embodiment of the present invention. As shown in FIG. 4, the frequency adjustment apparatus of the application in mobile communication mainly includes an acquisition unit 10, a determination unit 20, and a trigger unit 30. ,among them:

The acquiring unit 10 is configured to acquire monitoring parameters of the target cell, where the target cell is any cell under the monitoring area of the mobile communication network device, and the monitoring parameter indicates the monitored interference level from the target device to the target cell, where the target The device is a device that is different from the mobile communication network device. Specifically, the mobile communication network device obtains monitoring parameters of interest by monitoring the overall communication state of the cell of the target cell, and the monitoring parameters may be used to describe the overall target cell. Satisfactory situation, reflecting that the target is less than the interference level to the target device, the so-called target device refers to any other device that is different from the mobile communication network device.

The determining unit 20 is configured to determine whether the monitoring parameter is lower than a predetermined threshold.

The triggering unit 30 is configured to trigger an adjustment of the operating frequency of the target cell if it is determined that the monitoring parameter is lower than a predetermined threshold. Specifically, the mobile communication network device may trigger the adjustment of the working frequency of the target cell by using a sending command. In an optional embodiment, the mobile communication network device may send a trigger command to the target cell, and the working frequency of the target cell is determined by the current The operating frequency is adjusted to a frequency that is different from the current operating frequency.

The frequency adjustment apparatus applied in the mobile communication provided by the embodiment of the present invention acquires the monitoring parameter indicating the overall communication state of the cell of the target cell, and triggers the adjustment of the target cell when the monitoring parameter is lower than a predetermined threshold. The working frequency realizes that the mobile communication system working in the unlicensed frequency band can flexibly support dynamic frequency selection and adjustment, and solves the problem that the mobile communication system does not support dynamic frequency adjustment in the prior art, thereby improving the mobile communication system. The flexibility of the unlicensed band enables operators using mobile communication systems to operate more flexibly on the unlicensed band to avoid interference.

The structural components of the acquisition unit 10 are specifically described below in combination with different monitoring parameters:

For the case where the monitoring parameter is the compliance rate of the guaranteed rate service in the target cell, the mobile communication system classifies the service when each service is established, and is classified into a guaranteed rate service (GBR) and a non-guaranteed rate service (non- GBR). The system needs to record all guaranteed rate services and record the guaranteed bit rate of the service. During the operation of the system, it is monitored whether each guaranteed rate service has reached its target rate, and if not, it is recorded as a non-compliant service. For a period of time, the ratio of all the guaranteed guaranteed rate services and the total guaranteed rate services is used as the overall satisfaction parameter. Specifically, the obtaining unit 10 mainly includes a monitoring module, a first determining module, a first determining module, and a first calculation module, wherein each monitoring module for monitoring the rate of guaranteed bit rate service; a first determining means for determining an actual bit rate V _i W _i guaranteed rate traffic has reached a target rate-guaranteed service rate of the W _i V _i ' , where, i order to get the total number n, n being the target cell is a guaranteed rate traffic; means for determining a first determined in a case where the actual bit rate reaches the target rate V _i V _i 'to determine a guaranteed rate The service W _{i is up to} standard; the first calculation module is configured to calculate a ratio of the number of guaranteed rate services that meet the standard to the total number of guaranteed rate services in the target cell, and obtain a compliance rate of the guaranteed rate service in the target cell. Table 2 above takes the LTE system as an example to show the classification of GBR services and the guaranteed rate of various services.

For the case that the monitoring parameter is the correct rate of the data packet transmitted by the target cell, the acquiring unit 10 mainly includes a first acquiring module and a second calculating module, where the first acquiring module is configured to acquire data transmission of the target cell in the target time period. The total number of transmissions and the number of successful transmissions; the second calculation module is used to calculate the ratio of the number of successful transmissions to the total number of transmissions, and obtain the correct rate of the data packets transmitted by the target cell.

Specifically, the data transmission includes an uplink transmission and a downlink transmission. For the uplink transmission, the acquiring unit 10 further includes a second acquiring module, a second determining module, and a second determining module, where the second computing module calculates the number of successful transmissions and the total number of transmissions. Proportion, before obtaining the correct rate of the data packet transmitted by the target cell, the second obtaining module is configured to obtain physical layer receiving and demodulating of the mobile communication network device; the second determining module is configured to determine whether the physical layer receiving demodulation is successful; When the module determines that the physical layer receives the demodulation successfully, the second determining module is configured to determine that the uplink transmission is successful.

Taking the LTE system as an example, for each upload transmission, the LTE base station needs to count the uplink data of the physical layer receiving the demodulation, and if it is correctly demodulated, it is recorded as successful, and vice versa as failure. The base station side counts all transmissions over a period of time, using all the correct transmission times and the proportion of all transmission times as the monitoring parameters.

For the downlink transmission, the obtaining unit 10 further includes a third obtaining module, a third determining module, and a third determining module, where the second calculating module calculates the ratio of the number of successful transmissions to the total number of transmissions, and obtains the correct rate of the target cell transmission data packet. The third obtaining module is configured to obtain a physical layer receiving demodulation feedback of the target terminal, where the target terminal is a terminal that performs downlink transmission with the mobile communication network device, and the third determining module is configured to determine whether the physical layer receives the demodulation feedback as an ACK. When the third determining module determines that the physical layer receives the demodulation feedback as an ACK, the third determining module is configured to determine that the downlink transmission is successful.

For the case where the monitoring parameter is the interference level of the target cell, the obtaining unit 10 includes a fourth determining module, a fifth determining module, and a third calculating module respectively performing the following corresponding functions:

The fourth determining module is configured to determine the uplink interference level of the target cell as the uplink interference level of the target cell. Specifically, the base station side may perform statistics on the uplink signal interference noise ratio (SINR), and calculate the final The level of interference.

The fifth determining module is configured to determine a downlink interference level of the target cell according to a Reference Signal Received Power (RSRP) and a Reference Signal Received Quality (RSRQ) reported by the target terminal, where the target terminal A terminal that communicates with a mobile communication network device. Specifically, the specific calculation manner of the downlink interference level is: the mobile communication network device first receives the reference signal received power RSRP and the reference signal received quality RSRQ reported by the target terminal; and then calculates the mobile communication according to the reference signal received power RSRP and the reference signal received quality RSRQ. The total received power of the network device, where

The third calculation module is configured to calculate an average of the uplink interference level and the downlink interference level to obtain an interference level of the target cell.

For the case that the monitoring parameter is the proportion of the time that the target cell works on the unlicensed band, the obtaining unit 10 includes a fourth acquiring module and a fourth calculating module, where the fourth acquiring module is configured to obtain the target cell in the unlicensed band. The duration is used as the first duration, and the duration of the monitoring time window for monitoring the target cell is obtained as the second duration, wherein the length of the monitoring time window for monitoring the target cell is the longest duration of the target cell in the unlicensed band. The fourth calculation module is configured to calculate a ratio of the first duration to the second duration, and obtain a proportion of time that the target cell works on the unlicensed band. For example, if the target cell works for 30 seconds in an unlicensed band, and the target cell can use the maximum length of the unlicensed band for 60 seconds, the monitoring parameter is 0.5.

It should be noted that the frequency adjustment apparatus applied in the mobile communication provided by the embodiment of the present invention may be a base station in the mobile communication network equipment, and in the unlicensed frequency band, there are other solutions to meet the regulations and the frequency band. Complex interference environments, such as Listening Before Talk (LBT), Discontinuous Transmission (DTX), Carrier Selection, and so on. While these techniques may also be applied in mobile communications, the triggering conditions for dynamic frequency selection proposed by the present invention are equally applicable to the three techniques mentioned herein.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the details that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

In the several embodiments provided herein, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.

The unit described as a separate component may or may not be physically separated as a unit display The illustrated components may or may not be physical units, ie may be located in one place or may be distributed over multiple network elements. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, mobile terminal, server or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and the like. .

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

Claims

A frequency adjustment method applied in mobile communication, characterized in that it comprises:

The mobile communication network device acquires the monitoring parameter of the target cell, where the target cell is any cell under the monitoring area of the mobile communication network device, and the monitoring parameter indicates that the monitored target device is from the target cell to the target cell. Level of interference, the target device being a device that is different from the mobile communication network device;

The mobile communication network device determines whether the monitored parameter is below a predetermined threshold;

The mobile communication network device triggers adjustment of an operating frequency of the target cell if it is determined that the monitoring parameter is lower than the predetermined threshold.
The method according to claim 1, wherein the monitoring parameter comprises: a compliance rate of the guaranteed rate service in the target cell, a correct rate of the target cell transmission data packet, an interference level of the target cell, or The proportion of the time that the target cell works on the unlicensed band, wherein the time ratio is a ratio of the first duration to the second duration, and the first duration is the working of the target cell on the unlicensed band The duration is the duration of the monitoring time window for monitoring the target cell.
The method according to claim 2, wherein when the monitoring parameter is a compliance rate of the guaranteed rate service in the target cell, the monitoring parameters of the mobile communication network device acquiring the target cell include:

The mobile communication network device monitors a bit rate of each of the guaranteed rate services;

The mobile communication network device determines a guaranteed rate of service W i V i actual bit rate reaches the target rate guaranteed service rate of the W i V i ', where, i takes 1 sequentially to n, n being the target of the cell The total number of guaranteed rate services;

The mobile communication network device in a case where it is determined that the actual bit rate reaches the target rate V i V i 'is determined to ensure that the service rate W i standard; and

The mobile communication network device calculates a ratio of the number of the guaranteed rate services that meets the standard to the total number of the guaranteed rate services in the target cell, and obtains a compliance rate of the guaranteed rate service in the target cell.
The method according to claim 2, wherein when the monitoring parameter is the correct rate of the data packet transmitted by the target cell, the acquiring, by the mobile communication network device, the monitoring parameter of the target cell includes:

Obtaining, by the mobile communication network device, a total number of transmissions and a number of successful transmissions of data transmission of the target cell in a target time period;

The mobile communication network device calculates a ratio of the number of successful transmissions to the total number of transmissions, and obtains a correct rate of the target cell transmission data packet.
The method according to claim 4, wherein the data transmission comprises an uplink transmission, and the mobile communication network device calculates a ratio of the number of successful transmissions to the total number of transmissions to obtain the target cell transmission data. Before the correct rate of the packet, the monitoring parameter of the mobile communication network device acquiring the target cell further includes:

Obtaining, by the mobile communication network device, a physical layer receiving demodulation of the mobile communication network device;

Determining, by the mobile communication network device, whether the physical layer receives demodulation successfully;

The mobile communication network device determines that the uplink transmission is successful if it is determined that the physical layer receives demodulation successfully.
The method according to claim 4, wherein the data transmission comprises a downlink transmission, and the mobile communication network device calculates a ratio of the number of successful transmissions to the total number of transmissions to obtain the target cell transmission data. Before the correct rate of the packet, the monitoring parameter of the mobile communication network device acquiring the target cell further includes:

The mobile communication network device acquires demodulation feedback of a physical layer of the target terminal, where the target terminal is a terminal that performs the downlink transmission with the mobile communication network device;

The mobile communication network device determines whether the physical layer receives demodulation feedback as an ACK;

The mobile communication network device determines that the downlink transmission is successful if it is determined that the physical layer receives the demodulation feedback as the ACK.
The method according to claim 2, wherein when the monitoring parameter is an interference level of the target cell, the monitoring parameters of the mobile communication network device acquiring the target cell include:

The mobile communication network device determines that the uplink interference power of the target cell is an uplink interference level of the target cell;

Determining, by the mobile communication network device, a downlink interference level of the target cell according to a reference signal received power and a reference signal received quality reported by the target terminal, where the target terminal is a terminal that communicates with the mobile communication network device;

The mobile communication network device calculates an average of the uplink interference level and the downlink interference level to obtain an interference level of the target cell.
The method according to claim 2, wherein when the monitoring parameter is a time ratio of the target cell operating on the unlicensed frequency band, the monitoring parameter of the mobile communication network device acquiring the target cell includes:

The mobile communication network device acquires the first duration and the second duration;

The mobile communication network device calculates a ratio of the first duration to the second duration, and obtains a proportion of time that the target cell works on the unlicensed frequency band.
A frequency adjustment device for use in mobile communication, characterized in that the device is applied to a mobile communication network device, the device comprising:

An acquiring unit, configured to acquire monitoring parameters of the target cell, where the target cell is any cell under the monitoring area of the mobile communication network device, and the monitoring parameter indicates that the monitored target device is facing the target The interference level of the cell, where the target device is a device that is different from the mobile communication network device;

a determining unit, configured to determine whether the monitoring parameter is lower than a predetermined threshold;

And a triggering unit, configured to trigger to adjust an operating frequency of the target cell if it is determined that the monitoring parameter is lower than the predetermined threshold.
The apparatus according to claim 9, wherein the monitoring parameter comprises: a compliance rate of the guaranteed rate service in the target cell, a correct rate of the target cell transmission data packet, an interference level of the target cell, or The proportion of the time that the target cell works on the unlicensed band, wherein the time ratio is a ratio of the first duration to the second duration, and the first duration is the working of the target cell on the unlicensed band The duration is the duration of the monitoring time window for monitoring the target cell.
The apparatus according to claim 10, wherein when the monitoring parameter is a compliance rate of the rate-rate service in the target cell, the acquiring unit includes:

a monitoring module, configured to monitor a bit rate of each of the guaranteed rate services;

A first determining module configured to determine a guaranteed rate service W i V i actual bit rate reaches the target rate guaranteed service rate of the W i V i ', where, i takes 1 sequentially to n, n being the target cell The total number of guaranteed rate services;

A first determining module configured to in a case where it is determined that the actual bit rate reaches the target rate V i V i 'is determined to ensure that the service rate W i standard; and

The first calculating module is configured to calculate a ratio of the number of the guaranteed rate services that meets the standard to the total number of the guaranteed rate services in the target cell, and obtain a compliance rate of the guaranteed rate service in the target cell.
The apparatus according to claim 10, wherein when the monitoring parameter is the correct rate of the data packet transmitted by the target cell, the acquiring unit comprises:

a first acquiring module, configured to acquire a total number of transmissions and a number of successful transmissions of data transmission of the target cell in a target time period;

And a second calculating module, configured to calculate a ratio of the number of successful transmissions to the total number of transmissions, to obtain a correct rate of the data packet transmitted by the target cell.
The apparatus according to claim 12, wherein the data transmission comprises an uplink transmission, and the acquiring unit further comprises:

a second acquiring module, configured to calculate, by the second calculating module, a ratio of the number of successful transmissions to the total number of transmissions, and obtain a correct rate of the target cell transmission data packet, and acquire the mobile communication network device Physical layer receiving demodulation;

a second determining module, configured to determine whether the physical layer receives demodulation successfully;

The second determining module is configured to determine that the uplink transmission is successful if it is determined that the physical layer receives the demodulation successfully.
The apparatus according to claim 12, wherein the data transmission comprises a downlink transmission, and the obtaining unit further comprises:

a third acquiring module, configured to calculate a ratio of the number of successful transmissions to the total number of transmissions in the second calculation module, and obtain a physical layer receiving solution of the target terminal before obtaining a correct rate of the data packet of the target cell Adjusting feedback, wherein the target terminal is a terminal that performs the downlink transmission with the mobile communication network device;

a third determining module, configured to determine whether the physical layer receives demodulation feedback as an ACK;

And a third determining module, configured to determine that the downlink transmission is successful if it is determined that the physical layer receives the demodulation feedback as the ACK.
The apparatus according to claim 10, wherein when the monitoring parameter is an interference level of the target cell, the acquiring unit comprises:

a fourth determining module, configured to determine that the uplink interference power of the target cell is an uplink interference level of the target cell;

a fifth determining module, configured to determine a downlink interference level of the target cell according to a reference signal received power and a reference signal received quality reported by the target terminal, where the target terminal is a terminal that communicates with the mobile communication network device; as well as

And a third calculating module, configured to calculate an average of the uplink interference level and the downlink interference level, to obtain an interference level of the target cell.
The apparatus according to claim 10, wherein when the monitoring parameter is a proportion of time that the target cell works on an unlicensed frequency band, the obtaining unit comprises:

a fourth obtaining module, configured to acquire the first duration and the second duration;

And a fourth calculating module, configured to calculate a ratio of the first duration to the second duration, to obtain a proportion of time that the target cell works on the unlicensed frequency band.
Apparatus according to any one of claims 9 to 16, wherein said apparatus is said mobile communication Base station of a network device.