WO2015196445A1

WO2015196445A1 - Interference data acquisition method and device

Info

Publication number: WO2015196445A1
Application number: PCT/CN2014/080936
Authority: WO
Inventors: 郑娟; 李强; 马莎
Original assignee: 华为技术有限公司
Priority date: 2014-06-27
Filing date: 2014-06-27
Publication date: 2015-12-30
Also published as: CN105393595A; CN105393595B

Abstract

Provided are an interference data acquisition method and device, comprising: a first device pre-acquires a load relationship table comprising a corresponding relationship between the service load average information of a second device and the related identifier of the second device; detecting a reference signal, and acquiring the reference signal transmitted by at least one second device; determining the corresponding service load average information from the load relationship table; acquiring the interference data corresponding to the at least one second device according to the determined service load average information and the transmitted reference signal. The first device pre-acquires a load relationship table containing the service load average information of other second devices related to the current position of the first device, so that the first device can directly determine the service load average information of a detected second device according to the corresponding relationship in the load relationship table, thus saving the time of the first device acquiring data and calculating the service load average information of the second device, and greatly improving efficiency.

Description

Interference data acquisition method and device

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and apparatus for acquiring interference data.

Background technique

In the communication network, a plurality of different communication devices are included, which include mobile devices such as mobile terminals, mobile base stations, etc., and non-mobile devices such as base stations and heterogeneous networks. Micro base stations in the station, etc.

When a communication device wants to perform data interaction with other communication devices, then the communication device must first determine a target communication device that is currently suitable for establishing a connection, and then initiate a connection with the determined target communication device. Establish a connection for data interaction. However, the signal interference between adjacent communication devices in the communication network is relatively large, so in the process of determining the target communication device, it is necessary to take into account the influence of signal interference of other communication devices, so as to be able to accurately determine Target communication device.

At present, when a communication device determines the interference data of other communication devices due to signal interference, it needs to obtain the influence of the average traffic load of the other communication devices on the interference data, which requires a communication device to acquire other communication devices. The average load information of the respective average traffic load, such as the average power value. However, at present, a communication device takes a long time to perform data collection to calculate the average load information of other communication devices, which is equivalent to prolonging the time required for a communication device to determine the target communication device that is currently suitable for establishing a connection. Even in some cases, this may result in failure of the target communication device. Summary of the invention

The technical problem to be solved by the present invention is to provide an interference data acquisition method and apparatus. Effectively reduces the time to determine interference data from other communication devices due to signal interference, thereby increasing the efficiency of the communication network.

In order to solve the above technical problems, the technical solution drawn by the present invention is:

In a first aspect, the present invention provides a method for acquiring interference data, including: The first device pre-acquires a load relationship table, where the load relationship table includes a correspondence between the second device service load average information and the related identifier of the second device, where the second device is in the current location of the first device. Communication equipment;

The first device performs detection of a reference signal, and acquires a reference signal sent by the at least one second device, where the reference signal has a correlation identifier of the second device that sends the reference signal;

Determining, by the first device, the service load average information corresponding to the at least one second device, according to the related identifier of the at least one second device, from the load relationship table;

The first device obtains interference data corresponding to the at least one second device according to the determined traffic load average information of the at least one second device and the reference signal sent by the at least one second device.

In a first possible implementation manner of the first aspect, when the related identifier includes the device identifier of the second device, before the first device obtains the load relationship table in advance, the method further includes:

The third device acquires its own traffic load average information and the device identifier sent by the second device, where the third device is a communication device that has established a connection with the first device in the current location of the first device;

The third device establishes the load relationship table according to the service load average information and the device identifier;

The third device sends the load relationship table to the first device.

In a second possible implementation manner of the first aspect, when the related identifier includes a time-frequency resource that is occupied by the second device by using the reference signal, before the first device acquires the load relationship table in advance, Includes:

The fourth device acquires the average traffic load information of the second device, and the fourth device is a communication device that has established a connection with the first device in the current location of the first device; The device establishes the load relationship table according to the traffic load average information of the second device and the time-frequency resource that the second device sends the reference signal in advance;

The fourth device sends the load relationship table to the first device.

With reference to the first aspect or the first or second possible implementation manner of the first aspect, in a third possible implementation, the determining, by the first device, the determined service of the at least one second device The load average information and the transmitted reference signal obtain interference corresponding to the at least one second device After the data, it also includes:

And the first device performs RRM measurement on the at least one second device according to the obtained reference signal, the service load average information corresponding to the at least one second device, and the interference data.

In a second aspect, the present invention provides an interference data acquiring apparatus, including:

a load relationship table obtaining unit, configured to pre-acquire a load relationship table, where the load relationship table includes a correspondence between a second device service load average information and a related identifier of the second device, where the second device is the first The communication device in the area where the device is currently located;

a detecting unit, configured to perform detection of a reference signal, and acquire a reference signal sent by the at least one second device, where the reference signal has a correlation identifier of the second device that sends the reference signal;

a determining unit, configured to determine, according to the relevant identifier of the at least one second device, the service load average information corresponding to the at least one second device from the load relationship table;

The interference data acquiring unit is configured to obtain the interference data corresponding to the at least one second device according to the determined service load average information of the at least one second device and the reference signal sent by the at least one second device.

In a first possible implementation manner of the second aspect, when the related identifier includes the device identifier of the second device, before the triggering the load relationship table acquiring unit, the method further includes:

a first acquiring unit, configured to acquire the average traffic load information of the second device and the device identifier, where the third device is connected to the first device in the current location of the first device communication device;

a first establishing unit, configured to establish the load relationship table according to the service load average information and the device identifier;

a first sending unit, configured to send the load relationship table to the first device.

In a second possible implementation manner of the second aspect, when the related identifier includes the time-frequency resource that the second device sends the reference signal, before the triggering the load relationship table acquiring unit, the method further includes:

a second acquiring unit, configured to acquire, by the second device, the traffic load average information that is sent by the second device, where the fourth device is a communication device that has established a connection with the first device in the current location of the first device; a second establishing unit, configured to establish the load relationship table according to the service load average information of the second device and the pre-acquired time-frequency resource that the second device sends the reference signal; And sending the load relationship table to the first device.

With reference to the second aspect, or the first or the second possible implementation manner of the second aspect, in a third possible implementation manner, after the triggering the interference data acquiring unit, the method further includes:

And a measuring unit, configured to perform RRM measurement on the at least one second device according to the obtained reference signal, the traffic load average information corresponding to the at least one second device, and the interference data.

In a third aspect, the present invention provides a method for acquiring interference data, including:

The first device performs detection of the reference signal, and acquires a first reference signal and a second reference signal that are sent by the at least one second device, where the first reference signal includes a device identifier of the second device that sends the first reference signal, The second reference signal includes the traffic load average information of the second device that sends the second reference signal, where the time-frequency resource occupied by the first reference signal and the time-frequency resource occupied by the second reference signal are different. The second device is a communication device in a current area of the first device; the first device obtains, according to the service load average information of the second device that sends the second reference signal, the at least one second device Interference data;

The first device performs RRM measurement on the at least one second device according to the acquired at least one first reference signal and the interference data.

In a first possible implementation manner of the third aspect, the method further includes:

The second reference signal further includes a device identifier of the second device that sends the second reference signal. In combination with the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner, the method further includes:

When the first device acquires the second reference signal sent by at least two of the second devices, at least two of the second devices send the second reference signal to occupy the same time-frequency resource.

In a fourth aspect, the present invention provides an interference data acquiring apparatus, including:

An acquiring unit, configured to perform detection of a reference signal, acquire a first reference signal and a second reference signal sent by the at least one second device, where the first reference signal includes a device of the second device that sends the first reference signal The second reference signal includes a service load average information of the second device that sends the second reference signal, a time-frequency resource occupied by the first reference signal, and the second reference signal The time-frequency resource occupied by the number is different, and the second device is a communication device in an area where the first device is currently located;

An interference data obtaining unit, configured to obtain interference data corresponding to the at least one second device according to the service load average information of the second device that sends the second reference signal;

And a measuring unit, configured to perform RRM measurement on the at least one second device according to the acquired at least one first reference signal and the interference data.

In a first possible implementation manner of the fourth aspect, the method further includes:

The second reference signal further includes a device identifier of the second device that sends the second reference signal. In combination with the fourth aspect or the first possible implementation manner of the fourth aspect, in a second possible implementation manner, the method further includes:

It can be seen that the first device pre-acquires the load relationship table of the service load average information of the other second device related to the current location, and when the first device detects the reference signal of the second device, The corresponding relationship in the load relationship table directly determines the detected service load average information of the second device, and the method for directly acquiring the service load average information of the second device is freed from the first device used in the data collection calculation. The second time that the device service loads the average information, thereby speeding up the speed at which the first device determines the target communication device that is currently suitable for establishing a connection, and greatly improves the efficiency. DRAWINGS

1 is a flowchart of a method for acquiring interference data according to an embodiment of the present invention; FIG. 2 is a flowchart of a method for acquiring interference data according to an embodiment of the present invention; FIG. 3 is a flowchart of an embodiment of the present invention; FIG. 4 is a flowchart of a method for acquiring interference data according to an embodiment of the present invention; FIG. 5 is a schematic diagram of time-frequency resources for transmitting a reference signal according to an embodiment of the present invention; A device structure diagram for obtaining interference data is provided by the example;

FIG. 7 is a structural diagram of an apparatus for acquiring interference data according to an embodiment of the present invention; FIG. 8 is a structural diagram of an apparatus for acquiring interference data according to an embodiment of the present invention; FIG. 9 is a structural diagram of an apparatus for acquiring interference data according to an embodiment of the present invention;

10 is a structural diagram of an apparatus for acquiring interference data according to an embodiment of the present invention; FIG. 11 is a schematic structural diagram of hardware of an apparatus for acquiring interference data according to an embodiment of the present invention;

FIG. 12 is a schematic diagram of a hardware structure of an interference data acquiring apparatus according to an embodiment of the present invention. detailed description

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 obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In the prior art, a communication device needs to collect data for a long time to calculate the disadvantages of interference data brought by other neighboring communication devices, which causes a communication device to take a long time to determine the target communication device that is currently suitable for establishing a connection, and sometimes even Determine the failure. In order to solve this technical problem, in an embodiment of the present invention, the first device does not need to collect time-consuming data to calculate the impact of the average traffic load on the interference data, thereby acquiring the interference data, but pre-acquiring the current and a load relationship table in which the service load average information of the other second device is associated with the related identifier of the other second device, where the traffic load average information corresponds to the average traffic load, so that the first device needs to select the first When the two devices are connected, the related identifiers of the at least one second device are determined by detecting the reference signal, so that the first device only needs to use the relevant identifier to check the load relationship table to obtain the average traffic load information of the at least one second device. The time for determining the interference data brought by the at least one second device is greatly saved, and the method for directly acquiring the service load average information of the second device by using the look-up table eliminates the first device for calculating the second data in the data collection. The device business loads a large amount of time on the average information, thereby speeding up the first device The speed of the target communication device that is currently suitable for establishing a connection is determined, and the efficiency is improved. The first device may have multiple paths for obtaining the load relationship table in advance, and may be acquired by sending through the third device or the fourth device, where the third device and the fourth device mainly refer to that the connection has been established with the first device. For a relatively fixed communication network, the load relationship table may also be that the first device is already configured in the first device before leaving the factory, and so on. A variety of ways to obtain a load relationship table make the invention more applicable and widely used.

In an embodiment of the present invention, the second device may also carry its own traffic load average information to the reference signal and send it out, so that when the first device needs to select the second device to connect, it is detected. When the reference signal is used, the interference data of the traffic load average information of the second device that sends the reference signal can be directly obtained by analyzing the detected reference signal, and the first device does not need to use time-consuming data to calculate. The interference data of the second device greatly saves the time for determining the interference data brought by the at least one second device, and the second device directly sends the average traffic load information of the second device to the reference signal, so that the reference signal is sent. The method in which the detected first device directly obtains the interference data including the average information of the service load sent by the second device by detecting the reference signal eliminates the time when the first device calculates the average information of the second device service load in the collected data. , thereby speeding up the first device to determine the current suitable connection Speed of the target communication device, increases the efficiency.

The embodiments of the present invention are further described in detail below with reference to the accompanying drawings and embodiments.

In the present invention, the first device and the second device belong to the communication device, and may be a mobile communication device such as a mobile terminal, or a mobile base station, or a non-mobile communication device such as a base station. In the heterogeneous network, the micro base station in the macro base station has the characteristics of low transmission power and small coverage. In the present invention, the micro base station may also be referred to as a small cell, and may specifically include a city cell ( Metro cell, Micro cell, Pico cell, Femto cell, etc., where the concept of a cell is equivalent to a base station. The first device and the second device are specifically related to what type of communication device is associated with different application scenarios. For example, in a heterogeneous network, in a scenario where a macro base station and a micro base station are deployed together, the first device may be a user equipment in a coverage area of the macro base station, and the second device may support a cell switch function (either a dynamic switch or a semi-static Switching, etc.) of the micro base stations, and these micro base stations and The user equipment is located in a certain coverage, that is, the user equipment can receive the signal and/or channel sent by the micro base station; and in the communication of the device to the device, for example, the first device can be the user equipment. The second device may also be a user equipment. For example, in a scenario where air interface synchronization is implemented between the base stations, the base station needs to determine a synchronization source base station for which a synchronization signal can be provided. At this time, the base station can perform measurement results according to other base stations ( In addition, in this scenario, the first device may be a base station, and the second device may also be a base station. Further, the base station herein may be a micro base station.

Embodiment 1

The present embodiment mainly describes how the first device uses the pre-obtained load relationship table to quickly determine the interference data of the detected at least one second device. Referring to FIG. 1 , it is an interference provided by an embodiment of the present invention. A flow chart of the method of data acquisition, including:

S101: The first device pre-acquires a load relationship table, where the load relationship table includes a correspondence between a second device service load average information and a related identifier of the second device, where the second device is where the first device is currently located. Communication equipment in the area;

It should be noted that the load relationship table is obtained in advance by the first device by using a plurality of different paths. How to obtain or say that the first device obtains the load relationship table is in the second embodiment. Expand the description. The advantage of this is that the first device does not need to spend a lot of time collecting data on the second device in the area to calculate the traffic load average information, and then calculating the impact of the traffic load average information on the interference data. When the first device is detecting the reference signal, the load relationship table may be searched according to the obtained correlation identifier of the second device, and the service load average information of the corresponding second device is quickly and directly obtained. The load relationship table includes a correspondence between the service load average information of all the second devices in the area where the first device is located and the related identifier, so that when the first device searches for the load relationship table, The service load average information is found by the correlation identifier, that is, the correlation identifier of the second device detected by the first device in step S102 is necessarily in the load relationship table.

The service load average information may be an average traffic load size, for example, represented by high, medium, and low, and, for example, a finer granularity is used to represent different service load average information; or the traffic load average information may also be embodied. Additional information about the average load of the business load, for example The power information is used to indicate that the value of the power information is large, and the value of the power information is small. The value of the power information is small, which indicates that the service load is light. The value of the power information can also be directly understood as the power value or the energy value. In this case, A unique mapping relationship between different traffic load average information and different power information is required.

The area described herein may refer to an existing part of the communication network, for example, an area covered by a cell signal established by a base station, or may be an area within a range of a wireless network signal established by a communication device, etc. It refers to an area or the like within a predetermined range around the first device. The specific area refers to different application scenarios. The second device is mainly determined by the area where the first device is currently located, for example, if the area where the first device is currently located is specifically an area covered by a cell signal established by a base station, then The second device may be a mobile device in the cell, or in a heterogeneous network environment, the second device may also be a small cell ( _sma ll cell) in a macro cell; and, for example, if The area where the first device is located is specifically the area covered by the cell signal established by the macro base station, and the second device may be a micro base station in the cell established by the macro base station, such as a small cell, where The area covered by the cell signal established by the station may include an area covered by the wireless signal, and may also include an area covered by the wired signal. Here, the area covered by the wired signal may refer to a wired connection with the macro base station (for example, An area determined by other base stations, such as a micro base station and a macro base station, connected by the S1, X2 interface, for example, a macro base station Center, the distance between the macro base station and the micro base station is determined as a radius, or may be an area close to the area, that is, close to the macro base station, and the distance between the macro base station and the micro base station is determined as a radius For example, if the area where the first device is currently located is specifically that the first device can receive the maximum area corresponding to the signal sent by the communication device other than the first device, the second device may be the a mobile device in the largest area, or a macro base station or a micro base station (for example, a small cell) in the maximum area, etc., specifically, if the first device can receive the other communication device 1 except the first device The signal transmitted by the other communication device 2, and the distance between the other communication device 1 and the first device is smaller than the distance between the other communication device 2 and the first device, and may be between the first device and the other communication device 2 The determined area is the area where the first device is currently located, where the distance between the first device and the other communication device 2 is determined. The area may be centered on the first device, the distance The area determined for the radius can also be other areas close to this area.

S102: The first device performs detection of a reference signal, and acquires a reference signal sent by the at least one second device, where the reference signal has a correlation identifier of the second device that sends the reference signal.

It should be noted that, in many cases, the first device starts to detect the reference signal, for example, when the first device needs to find a new communication device for establishing a data connection, and the like, which is not limited by the present invention. .

For the reference signal, the second device may be sent periodically, or the second device may be triggered by an event, and the time-frequency resources occupied by each transmission are the same, and the reference signal types are also various, and the more common types. Including the discovery reference signal (English full name: Discovery Reference Signal, English abbreviation DRS), may also be Cell-specific Reference Signal (CRS), Channel State Information Reference Signal (CSI-RS) , Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), Listening Reference Signal (LRS), etc. In the present invention, the reference signal is exemplified as DRS. Obviously, in order to enable the first device to detect the reference signal sent by the second device, the first device needs to know in advance the time-frequency resource that the second device sends the reference signal. The primary function of the reference signal sent by the second device is that the first device can obtain the reference signal receiving power of the second device that sends the reference signal (in English, the full name is Reference Signal Received Power, the abbreviation is RSRP). The first device can use the obtained RSRP to obtain the interference data brought by the second device together with the traffic load average information corresponding to the same second device, and obtaining the RSRP by using the reference signal may be using the prior art, that is, by reference. The RSRP obtained by the signal is obtained by linearly averaging the power of the resource element (Resource Element, RE) carrying the reference signal in the measurement bandwidth within a preset measurement bandwidth of the first device; or may be obtained by other means. For example, the RSRP obtained by the reference signal is a linear average of the total power of the Orthogonal Frequency Division Multiplexing (OFDM) symbol including the reference signal in the measurement bandwidth within the preset measurement bandwidth of the first device. . More specifically, for example, H has no system bandwidth including M RBs, and there are N REs carrying DRS on each RB, and one way is to include all REs included in the system bandwidth (ie, The received power of the DRS on the M*N REs, as the RSRP of the cell transmitting the DRS, or alternatively, the received power of the DRS on the M*N REs is multiplied by a linear average coefficient, The linear average coefficient is related to the frequency bandwidth. The frequency bandwidth can be expressed by the number of REs or RBs, or by other parameters that represent the frequency bandwidth. For example, the received power of the DRS on the M*N REs may be linearly averaged on the M*N REs, and the corresponding linear average coefficient is 1/(M*N), or may be on the M*N REs. The received power of the DRS is averaged over all REs included in the system bandwidth. It is assumed that the number of all REs included in the system bandwidth is K, the corresponding linear average coefficient is 1/(Κ), or the DRS on the RE*ΝRE The received power is linearly averaged over a number of RBs, and the corresponding linear average coefficient is 1/Μ. In the above example, in addition to the received power of the DRS on all REs included in the system bandwidth or the received power of the DRS multiplied by the linear average coefficient as the RSRP, the received power of the DRS on all REs included in the specific bandwidth or The received power of the DRS multiplied by the linear average coefficient is used as the RSRP; the RSRP is obtained by the reference signal, and may be other forms as long as it can represent or contain the reference signal power or energy transmitted by the second device received by the first device, I will not repeat them here. In the present invention, the reference signal further has a correlation identifier of the second device, and the correlation identifier may be included in the reference signal, or may be used as an attribute feature of the reference signal itself, etc., by the needs of the application scenario. The solution of the embodiment is decided, and the description will be made in the second embodiment. The primary role of the related identifier in the present invention is that the first device can determine the identity of the second device by using the related identifier and/or obtain the determined second device by checking the load relationship table. Business load average information.

It should be noted that the first device may only detect a reference signal sent by a second device when detecting the reference signal, and may also detect a reference signal sent by multiple second devices, the reference signal and The second device - corresponding, that is to say, the first device detects several reference signals, which is equivalent to determining several second devices.

S103: The first device determines, according to the correlation identifier of the at least one second device, the service load average information corresponding to the at least one second device from the load relationship table;

That is, if the first device in S102 determines the at least one second device by using the related identifier, then in the step, the first device needs to check the related identifier by using the related identifier. Determining, by the load relationship table, a service load average information corresponding to the service of the at least one second device, where the second device and the service load average information are in one-to-one correspondence, according to The related identifiers can be used to check the load relationship table to obtain a plurality of business load average information.

S104: The first device obtains interference data corresponding to the at least one second device according to the determined service load average information of the at least one second device and the reference signal sent by the at least one second device.

That is, the reference signal obtained in step S102 and the service load average information determined by the S103 lookup table, and any one of the at least one second device determines a reference signal corresponding to itself one-to-one. And a business load average information, from which the corresponding interference data can be calculated. The interference data corresponds to the second device.

It can be seen that the method of directly obtaining the service load average information of the second device by looking up the table eliminates a large amount of time for the first device to calculate the average information of the second device service load by collecting data, thereby speeding up the first device. The speed of the target communication device that is currently suitable for establishing a connection is determined, and the efficiency is improved.

Embodiment 2

This embodiment will expand the manner in which the first device obtains the load relationship table in advance based on the first embodiment.

Referring to FIG. 2, it is a flowchart of a method for acquiring interference data according to an embodiment of the present invention, where the related identifier includes a device of a second device. When identifying, the method includes:

S201: The third device acquires its own service load average information and device identifier sent by the second device, where the third device is a communication device that has established a connection with the first device in the current location of the first device. ;

It should be noted that the third device is also a communication device in the current location of the first device, and may be one of the second devices, or may not be the second device, but for subsequent directions. The first device sends the load relationship table, so that a connection with the first device needs to be established. At the same time, in order to obtain the traffic load average information and the device identifier sent by the second device, the third device also needs to have a corresponding data connection with all the second devices in the current location of the first device, where The data connection may be a data connection realized by wire, or a data connection realized by wireless, wherein the data connection through wired connection, the wired interface may be an S1 interface, an X2 interface, etc., implemented by wireless. The data connection means that the second device and the third device can realize the transmission of data between each other through the wireless channel.

The device identifier is mainly used to indicate the identity of the second device in the communication network, and the device identifier and the second device are corresponding to each other, for example, when the second device is a small cell, The device identifier may be a physical cell identification (PCI) of a small cell, or the like.

S202: The third device establishes the load relationship table according to the service load average information and the device identifier.

S203: The third device sends the load relationship table to the first device.

S204: The first device pre-acquires a load relationship table, where the load relationship table includes a correspondence between the second device service load average information and the device identifier of the second device, where the second device is where the first device is currently located. Communication equipment in the area;

S205: The first device performs detection of a reference signal, and acquires a reference signal sent by the at least one second device, where the reference signal has a device identifier of the second device that sends the reference signal;

S206: The first device determines, according to the device identifier of the at least one second device, the service load average information corresponding to the at least one second device from the load relationship table;

S207: The first device obtains interference data corresponding to the at least one second device according to the determined service load average information of the at least one second device and the transmitted reference signal.

After the interference data corresponding to the at least one second device is obtained, the first device may perform different operations by using the interference data, and is generally used, and the application is generally required to determine a current suitable connection for the first device. The application scenario of the second device, the first device may perform radio resource management (referred to as Radio Resource Management in English, RRM) according to the interference data, so as to determine that the current connection is suitable from the RRM measurement result. The second device. That is, on the basis of FIG. 1 or FIG. 2, the first device may obtain the at least one first according to the determined traffic load average information of the at least one second device and the transmitted reference signal. After the interference data corresponding to the second device, the step of performing the RRM measurement may be further included. Taking FIG. 2 as an example, the method further includes: S208: The first device performs RRM measurement on the at least one second device according to the obtained reference signal, the service load average information corresponding to the at least one second device, and the interference data.

It should be noted that the RRM measurement is mainly to determine whether the condition for establishing a connection is satisfied between the first device and a second device, and the better the result of the RRM measurement, the first device is proved. The better the connection quality and the connection effect after establishing the connection with the second device, or the more suitable the first device is to establish a connection with the second device. The RRM measurement corresponds to the second device.

For example, in the embodiment shown in FIG. 2, the specific device is further illustrated by a specific application scenario. For example, in a heterogeneous network environment, the first device is specifically a user equipment (English name is User Equipment). The abbreviation is UE, and the current location of the UE may be as described above. For example, the current location of the UE may be a cell covered by a macro base station, that is, a macro cell, and the second device may be specifically All small cells deployed in the macro cell in which the user equipment currently resides may be a micro cell or a micro cell, and have wireless and/or wired with the currently camped macro cell and all small cells deployed in the macro cell. Other macro cells and/or small cells of the interface, in this example, the third device is specifically the macro cell. The small cell and the macro cell supporting the cell on/off function have wired and/or wireless interfaces, that is, the UE can directly or indirectly obtain the small cell service load supporting the small cell on/off function by means of macro cell assistance. The average information is as follows: If the current location of the UE is within a certain range of the UE, the third device may be a small cell included in the current location of the UE, and may also be in the current location of the UE. The included small cell has other small cells in a connected relationship).

The macro cell is mainly used to provide coverage and real-time data services, and the small cell is mainly used to assist the macro cell when the number of UEs camped in the macro cell is large, and provide the UE with a high-speed data service. However, in general, a large number of UEs do not always reside in the macro cell. In order to save system resources, the macro cell closes a small cell in an area with a small number of UEs. In order to be able to determine when it is necessary to re-enable the small cell, the closed small cell periodically transmits the DRS to allow the neighboring UE to detect itself, so that when the UE is closer to a closed small cell, it can pass the detection. Go to the DRS to discover the closed small cell, in order to be able to To quickly determine a closed small cell that is suitable for establishing a connection, it is required to quickly obtain the traffic load average information of at least one closed small cell found when detecting the DRS, to calculate the interference caused by the detected closed small cell. Data, in order to perform RRM measurement, when it is determined that a closed small cell is suitable for establishing a connection, the closed small cell may be enabled by the UE or enabled by the macro cell, and after being turned on, the UE may be Establish a connection to get better data services. However, in the prior art, the UE acquires the traffic load average information of the closed small cell for a long time, and even when the UE moves faster, the UE has left the current region (for example, a macro). The cell) still can't get accurate results, which leads to the opening of the wrong small cell and even the failure of the RRM measurement.

To this end, all small cells (second devices) deployed under the macro cell (third device), that is, small cells having wired and/or wireless interfaces with the macro cell, pre-store their own traffic load average information. And the device identifier of the device is sent to the macro cell, and the macro cell establishes the load relationship table according to the received service load average information and the device identifier, where the service load average information corresponds to the device identifier. The way in which the small cell sends its own traffic load average information to the macro cell and its own device identity can be backhaul, for example, through the S1 interface.

The X2 interface) or the air interface signaling mode is not limited here.

When the UE (the first device) enters the macro cell and establishes a connection with the macro cell, the macro cell may send the load relationship table to the UE, and the manner of sending to the UE may be a macro. The cell configures the load relationship table into the neighboring cell list, and the UE may obtain the neighboring cell list when downloading the neighboring cell list, or may use other radio resource control (Radio Resource Control,

RRC) signaling, or physical layer signaling, or Media Access Control (MAC) signaling directly notifies the UE of the load relationship table.

When the UE needs to perform the selection, reselection, or handover of the small cell during the mobile process or in other situations, the UE starts to detect the reference signal. In the application scenario, when the reference signal is specifically DRS, It is mainly sent by the closed small cell. It should be noted that the closed small cell can continue to send the DRS in the open state, which is not limited. Certainly, when the reference signal is specifically other types of signals, it may also be sent by the opened small cell, which is not limited thereto. The following describes the case where the reference signal is specifically DRS, and the DRS is transmitted by the closed small cell. The UE detects at least one DRS by detecting the DRS, and the DRS carries the device identifier of the small cell, that is, determines at least one closed small cell corresponding to the DRS, and the UE is detected for the at least one DRS. The corresponding RSRP is obtained, where the specific process is: the UE determines the time-frequency resource where the detected DRS is located, and the UE determines, according to the received power of the detected DRS carried on the time-frequency resource, The RSRP of the cell or the UE determines the time-frequency resource in which the detected DRS is located, and the received power of the detected DRS carried on the time-frequency resource is in a specific frequency bandwidth and/or time resource. The linear averaging is performed, and the result after the linear averaging is used as the RSRP of the cell corresponding to the detected DRS, where the time-frequency resource is the time resource and the frequency resource where the DRS is located, and the time resource may pass the radio frame index and the subframe. At least one of an index, a slot index, and an OFDM symbol index indicates that the frequency resource may pass through a subcarrier index, a RE index, and a Resource Block (RB). Indicate at least one of the quotes.

The UE then obtains the service load average information of the corresponding small cell according to the device identifier check load relationship table carried in the DRS, so as to calculate the interference data brought by the small cell, and the interference data needs to be described. Yes, mainly refers to the interference from other small cells that a small cell currently measured by RRM is subjected to in the subsequent RRM measurement. In this application scenario, for example, the UE detects two DRSs, which are DRS 1 and DRS2 respectively, DRS 1 is sent by the closed small cell A, and DRS2 is sent by the closed small cell B, when When the UE performs RRM measurement on the small cell A, it is necessary to consider the interference data of the small cell B to accurately calculate the RRM measurement result of the small cell A. Similarly, when the UE performs RRM measurement on the small cell B, It is also necessary to consider the interference data of the small cell A.

The specific process of calculating the interference data caused by a small cell is as follows: the UE determines the small according to the service load average information of the small cell and the RSRP of the small cell determined by the time-frequency resource of the DRS and the received power. Interference data contributed by the RRM measurement when the cell acts as an interfering cell. For example, it is represented by I=P*RSRP, where I is interference data and P is traffic load average information, such as power information. It should be noted that the interference data generated by calculating a small cell may also have other calculation manners, and the result includes at least the impact of the traffic load average information of the one small cell on the interference data and the detected reference signal reception. The power can be used, and the specific calculation method is not limited. After obtaining the interference data of the at least one small cell, the UE starts to perform RRM measurement on the at least one small cell, where RRM generally includes two types, and one is reference signal receiving quality (English name is Reference Signal Received Quality) , the English abbreviation is RSRQ), one is the signal to interference and noise ratio (English full name is Signal to Interference plus Noise Ratio, English abbreviation is SINR). The calculation process for each is different, specifically:

When the RRM measurement is specifically RSRQ measurement:

RSRQ = ^

P ^ RSRP + ^ P^ RSRP, when the RRM measurement is specifically SINR measurement: SINR = _n ^RSRP

among them,

The RSRP is the reference signal received power of the closed small cell currently measured by the RRM, and is calculated by the DRS corresponding to the closed small cell;

RSRP, which is a reference signal received power of other closed small cells in the at least one closed small cell except the closed small cell currently measured by the RRM, calculated by DRS corresponding to the other closed small cells;

P is the average traffic load information of the closed small cell currently measured by the RRM;

Traffic load average information of other closed small cells in the at least one closed small cell other than the closed small cell currently measured by the RRM;

n is the total number -1 of the at least one closed small cell.

It should be noted that, in the foregoing RRM measurement process, any closed small cell can be replaced by a small cell that is not closed, and the RRM measurement can be accurately and quickly implemented by acquiring a load shutdown table.

It should be noted that the granularity of each parameter in the RRM measurement can be the same.

For example, for the two small cells, the small cell 0 and the small cell 1, respectively, the UE can obtain the RSRP0 corresponding to the small cell 0 by detecting the DRS 0, and the RSRP1 corresponding to the small cell 1 can be obtained by detecting the DRS 1. If the traffic load average information corresponding to the small cell 0 and the small cell 1 By using P0 and PI respectively, the UE can obtain SINR0=RSRP0/(P1*RSRP1) corresponding to small cell 0 and RSRQ0=RSRP0/(P0 corresponding to small cell 0) when performing RRM measurement on small cell 0. *RSRP0+P1*RSRP1). Similarly, the UE may also obtain SINR1=RSRP1/(P0*RSRP0) corresponding to the small cell 1 and RSRQ1=RSRP1/(P0*RSRP0+P1*RSRP1) corresponding to the small cell 1. In the above calculation process, the molecular part may also reflect the influence of the traffic load average information on the signal data part in the RRM measurement result, that is, the UE may obtain the SINR0 corresponding to the small cell 0 when performing RRM measurement on the small cell 0. P0*RSRP0/(P1*RSRP1), and RSRQ0=P0*RSRP0/(P0*RSRP0+P1*RSRP1) corresponding to the small cell 0. Similarly, the UE can also obtain the SINR1=P1* corresponding to the small cell 1. RSRP1/(P0*RSRP0) and RSRQ1 corresponding to small cell 1 = PI *RSRP1/(P0*RSRP0+P1 *RSRP1). This process shows that RSRP and interference power are obtained based on the same granularity. That is to say, for different small cells, the calculation methods of RSRP and interference power and RRM measurement are the same, so that the RRM measurement results measured by different small cells can be compared fairly. It should be noted that, when performing RRM measurement on a small cell, the RRM measurement result, in particular, the SINR calculation result or the RSRQ calculation result, includes at least one or more interfering cells except the measured small cell. The received interference data and the reference signal received power of the measured small cell may be used, or may further include the service load average information of the measured small cell, and the specific calculation manner is not limited, for example, the above mentioned formula The denominator part in the middle may also include the noise energy received by the first device, etc. Further, it is to be noted that the granularity of each parameter in the RRM measurement is the same, and may also refer to the interference data included in the RRM measurement result. And signal data is derived based on time resources and/or frequency resources of the same size. Specifically, if the signal data (for example, the RSRP involved in the present specification) is obtained based on the RE and the interference data is obtained based on the RB, the signal data portion may be proportionally multiplied by a coefficient A when calculating the RRM measurement result. So that the time-frequency resource portion on which the signal data portion is based is the same as the interference data portion; or, if the signal data is obtained based on one RB and the interference data is obtained based on a plurality of RBs, when calculating the RRM measurement result, The signal data portion can be scaled by a coefficient B such that the signal data portion is based on the same time-frequency resource size as the interference data portion.

It should also be noted that the UE determines the detected DRS according to the detected DRS. Before the corresponding small cell, the UE needs to know the configuration information of the DRS corresponding to the different small cells, and the configuration information includes the candidate sequence of the DRS, the sending timing, the sending bandwidth, the candidate resource unit pattern of the DRS in the time-frequency resource fast, or the like, or The UE can also detect the existence of all possible DRS candidate sequences on all possible time-frequency resources by means of blind detection. This is a prior art and will not be described in detail.

After calculating the RRM measurement result of the at least one small cell, the UE may determine, by the UE, the small cell that is currently suitable for establishing a connection, or report the RRM measurement result to the macro by the UE. The cell is determined by the macro cell, and a small cell is determined, and the UE is notified to establish a connection with the small cell, which is not limited herein.

In this application scenario, although the example is performed on a closed small cell, it can also be applied to a small cell that has been opened, or a small cell that does not have a switch function, and can also quickly acquire services of each small cell. The effect of load-averaged information is used to speed up RRM measurements.

Referring to FIG. 3, it is a flowchart of a method for acquiring interference data according to an embodiment of the present invention, where the related identifier includes a second device, where When the reference signal occupies a time-frequency resource, the method includes:

S301: The fourth device acquires the average traffic load information of the second device, and the fourth device is a communication device that has established a connection with the first device in the current location of the first device.

It should be noted that the fourth device is also a communication device in the current location of the first device, and may be one of the second devices, or may not be the second device, but for subsequent directions. The first device sends the load relationship table, so that a connection with the first device needs to be established. At the same time, in order to obtain the traffic load average information and the device identifier sent by the second device, the fourth device also needs to have a corresponding data connection with all the second devices in the current location of the first device. The time-frequency resource in the time-frequency resource that the second device sends the reference signal mainly refers to a time resource and a frequency resource, and the time resource may pass through a radio frame index, a subframe index, a slot index, and an OFDM symbol index. At least one item indicates that the frequency resource may be indicated by at least one of a subcarrier index, a RE index, and an RB index. S302: The fourth device establishes the load relationship table according to the service load average information of the second device and the time-frequency resource that the second device sends the reference signal in advance.

It should be noted that, in the present invention, the time-frequency resource occupied by the second device to transmit the reference signal may also refer to a time-frequency resource location occupied by the reference signal.

Here, the manner in which the second device that is pre-acquired by the fourth device sends the time-frequency resource occupied by the reference signal is described, and the method mainly includes three modes, and of course, there are other modes. Limited:

The first mode may be that the communication network pre-configures all the second devices in advance, and then the second device may send the time-frequency resources occupied by the reference signal to the Fourth device.

The second mode may be that the communication network pre-configures all the second devices in advance, and the communication network also sends the configured time-frequency resources occupied by the second reference device to the fourth device. .

The third mode may be that the fourth device pre-configures all the second devices to send the time-frequency resources occupied by the reference signals, and then deploys the time-frequency resources occupied by the reference signals to all the second devices, so that all The second device transmits the reference signal according to the deployment.

S303: The fourth device sends the load relationship table to the first device.

S304: The first device pre-acquires a load relationship table, where the load relationship table includes a correspondence between the second device service load average information and a time-frequency resource that the second device sends the reference signal, where the second device a communication device in a current area where the first device is located;

S305: The first device performs detection of a reference signal, acquires a reference signal sent by the at least one second device, and determines a time-frequency resource that is used to send the reference signal.

S306: The first device determines, from the load relationship table, the service load average information corresponding to the at least one second device according to the time-frequency resource that the at least one second device sends the reference signal;

In this step, the first device is in a manner similar to an implicit indication. When the traffic load average information between the frequency resource and the second device has a corresponding relationship in step S302, the first device The device is equivalent to determining by determining the time-frequency resource occupied by the reference signal. The traffic load average information of the second device that sends the reference signal, and the identity of the second device may be obtained by the first device by detecting a sequence form of the reference signal. S307: The first device obtains interference data corresponding to the at least one second device according to the determined service load average information of the at least one second device and the transmitted reference signal.

After the interference data corresponding to the at least one second device is obtained, the first device may perform different operations by using the interference data, and is generally used, and the application is generally required to determine a current suitable connection for the first device. The application scenario of the two devices, the first device may perform RRM measurement according to the interference data, so as to determine, from the result of the RRM measurement, a second device that is currently suitable for establishing a connection. That is, on the basis of FIG. 1, FIG. 2 or FIG. 3, the first device may further obtain the information according to the determined service load average information of the at least one second device and the transmitted reference signal. After the interference data corresponding to the at least one second device, the method further includes the step of performing the RRM measurement, and the method of the following is performed by the method of FIG. 3, further comprising: S308: the first device, according to the obtained reference signal, the at least one The traffic load average information corresponding to the two devices and the interference data perform RRM measurement on the at least one second device.

For the embodiment shown in FIG. 3, a specific application scenario as illustrated in the embodiment shown in FIG. 2 may be further used for further description. For example, in a heterogeneous network environment, the first The device is specifically a UE, and the current area of the UE may be a cell covered by a macro base station, that is, a macro cell, and the second device may be specifically all the small cells deployed in the macro cell where the user equipment currently resides. The small cell may be a micro cell or a micro cell, and the fourth device is specifically the macro cell. The small cell and the macro cell supporting the cell on/off function have a wired or wireless interface, that is, the macro cell assists the UE to directly or indirectly obtain the average information of the small cell service load supporting the small cell on/off function. .

Taking the first mode described in step S302 as an example, the macro cell (fourth device) is deployed. All the small cells (second devices) under the transmission may send the time-frequency resources occupied by the DRS to the macro cell while transmitting the traffic load average information. The macro cell establishes the load relationship table according to the received service load average information and the time-frequency resource that the small cell sends the DRS, where the service load average information and the time-frequency resource that the DRS occupies— — Correspondence.

When the UE (the first device) enters the macro cell and establishes a connection with the macro cell, the macro cell may send the load relationship table to the UE.

When the UE needs to perform the selection, reselection, or handover of the small cell during the mobile process or in other situations, the UE starts to detect the reference signal. In the application scenario, when the reference signal is specifically DRS, It is mainly sent by the closed small cell. It should be noted that the closed small cell can continue to send the DRS in the open state, which is not limited. Of course, when the reference signal is specifically other types of signals, it may also be sent by the opened small cell, which is not limited. The following is described when the reference signal is specifically DRS, and the DRS is sent by the closed small cell.

The UE detects the at least one DRS by detecting the DRS, and determines the device identifier of the corresponding small cell by detecting the sequence form of the DRS, and then, according to the time-frequency resource occupied by the at least one DRS, checks the load relationship table to obtain a corresponding The average traffic load information of the small cell.

The UE then obtains an RRM measurement result corresponding to the DRS according to the DRS. The RSRP and the calculation of the interference data and the calculation of the RRM measurement are the same as those in the specific application scenario as shown in the embodiment shown in FIG. 2, and details are not described herein again.

It should be noted that, when the related identifier includes the time-frequency resource that the second device sends the reference signal, the first device may further have a path for acquiring the load relationship table, for example, In some areas where the communication environment is very stable, the parameters of the communication device therein are basically not changed. The first device can even configure the corresponding load relationship table at the time of shipment, when the first device enters the area. The pre-configured corresponding load relationship table can be directly used. In this embodiment, the foregoing step S301 to step S306 may be replaced by the following process: the load relationship table may also be used to learn the UE in a predefined or pre-configured manner, and then the UE blindly detects the second device. a time-frequency resource of the transmitted reference signal, to determine a service load average information of the second device that sends the reference signal, where the second device The identity of the device can be obtained by the first device by detecting a sequence of reference signals. The specific application scenario to which the embodiment of the present invention is applicable may be performed not only for the UE (the first device) in the heterogeneous network to perform RRM measurement on the small cell (second device) in the macro cell, but also for the UE in the common network. (first device) performing RRM measurement on a cell (second device), and is also applicable to a cell (first device) performing RRM measurement on a cell (second device) (for example, a scenario in which a network is intercepted between cells), and a UE (The first device) performs RRM measurement on the UE (second device) (for example, a scenario of Device-to-Device).

It should be noted that there is also a method for directly obtaining the average load information of the second device by looking up the table, and also eliminating a large amount of time for the first device to calculate the average information of the second device service load in the collected data. In this manner, the second device determines the time-frequency resource of the second device to send the reference signal according to the correspondence between the traffic load average information and the time-frequency resource of the transmission reference signal according to the average traffic load information of the second device. The second reference signal is sent according to the determined time-frequency resource of the transmission reference signal. The second device may also notify the fifth device of the time-frequency resource location of the transmission reference signal and the device identifier of the second device. After receiving the time-frequency resource location of the reference signal sent by the second device and the device identifier of the second device, the fifth device determines the correspondence between the service load average information and the time-frequency resource of the transmission reference signal. The traffic load average information of the second device; the fifth device constructs a correspondence between the average information of the second device service load and the device identifier of the second device according to the determined service load average information of the second device Establishing a load relationship table, and notifying the load relationship table to the first device; the first device performing detection of the reference signal sent by the second device, acquiring a reference signal sent by the at least one second device, where the reference signal is sent The device identifier of the second device of the reference signal, the first device searches the load relationship table according to the device identifier, and obtains service load average information of the second device corresponding to the device identifier; Determining the traffic load average information of the at least one second device and the transmitted reference signal according to the determined Obtaining interference data corresponding to the at least one second device. Embodiment 3

In this embodiment, the first device directly obtains the service load average information sent by the second device when detecting the reference signal, so as to quickly determine the interference data of the detected at least one second device, and refer to FIG. 4 It is a flowchart of a method for acquiring interference data provided by an embodiment of the present invention, including:

S401: The first device performs detection of the reference signal, and acquires a first reference signal and a second reference signal that are sent by the at least one second device, where the first reference signal includes a device that sends the second device of the first reference signal And the second reference signal includes the traffic load average information of the second device that sends the second reference signal, where the time-frequency resource occupied by the first reference signal and the time-frequency resource occupied by the second reference signal are different. The second device is a communication device in a region where the first device is currently located.

That is, in this embodiment, a second device sends a total of two reference signals, which are a first reference signal and a second reference signal, respectively, and the first reference signal is mainly used to calculate a reference signal of the second device. The received power (in English, referred to as Reference Signal Received Power, abbreviated as RSRP in English), and the second reference signal is mainly used to carry the traffic load average information of the second device.

It should be noted that the service load average information may be an average traffic load size, for example, represented by high, medium, and low, and, for example, a finer granularity is used to represent different service load average information; or a traffic load average The information may also be other information that can reflect the average information of the traffic load, for example, represented by power information. The value of the power information may indicate that the traffic load is heavy, the value of the power information is small, and the service load may be light, and the value of the power information may also be Directly understood as the power value or energy value. Obviously, in this case, there is a need for a unique mapping between different traffic load average information and different power information.

The area described herein may refer to an existing part of the communication network, for example, an area covered by a cell signal established by a base station, or may be an area within a range of a wireless network signal established by a communication device; It refers to an area or the like within a predetermined range around the first device. The specific area refers to different application scenarios. The second device is mainly determined by the area where the first device is currently located, for example, if the area where the first device is currently located is specifically an area covered by a cell signal established by a base station, then What the second device may be a mobile device in the cell, or in a heterogeneous network environment, the second device may be a macro cell small cell _(sma ll cell) and the like; As another example, if The area where the first device is located is specifically the area covered by the cell signal established by the macro base station, and the second device may be a micro base station in the cell established by the macro base station, such as a small cell. The area covered by the cell signal established by the macro base station may include an area covered by the wireless signal, and may also include an area covered by the wired signal. Here, the area covered by the wired signal may refer to a wired connection with the macro base station. (for example, an area connected by the S1, X2 interface), for example, a region jointly determined by the micro base station and the macro base station, for example, a macro base station as a center, and a distance between the macro base station and the micro base station is determined as a radius, or It may be an area close to the area, that is, close to the macro base station, and the distance between the macro base station and the micro base station is a radius For example, if the area where the first device is currently located is specifically that the first device can receive the maximum area corresponding to the signal sent by the communication device other than the first device, the second device may be the a mobile device in the largest area, or a macro base station or a micro base station (for example, a small cell) in the maximum area, etc., specifically, if the first device can receive the other communication device 1 except the first device The signal transmitted by the other communication device 2, and the distance between the other communication device 1 and the first device is smaller than the distance between the other communication device 2 and the first device, and may be between the first device and the other communication device 2 The determined area is the area where the first device is currently located, wherein the area determined by the distance between the first device and the other communication device 2 may be centered on the first device, and the distance is determined by the radius. The area can also be other areas close to this area.

The first device obtains the service load average information sent by the second device directly from the second reference signal, so that the first device does not need to spend a large amount of time to collect data for the second device in the area to calculate the service. Load average information.

In a preferred embodiment, the time-frequency resources occupied by the at least two second devices to send the second reference signal may be set to be the same, so that the first device can detect the same time-frequency resource. The second reference signal sent by the at least two second devices improves efficiency. Further, the time-frequency resource occupied by the at least two second devices to send the second reference signal may be configured to be the same, that is, the at least two second devices are similar to a single frequency. Send the number in the form of a Single Frequency Network like (SFN-like) a second reference signal, wherein different second devices transmit the traffic load average information carried by the second reference signal corresponding to the respective second device, where the traffic load average information can be embodied by the transmit power of the second reference signal, apparently in this In this case, the second reference signal may not carry the device identifier carried in the first reference signal.

S402: The first device obtains interference data corresponding to the at least one second device according to the service load average information of the second device that sends the second reference signal.

Optionally, the second reference signal further includes a device identifier of the second device that sends the second reference signal.

If the second reference signal sent by the second device also carries the device identifier of the second device, the first device and the second reference signal sent by the same second device carry the same device identifier, so the first device The first reference signal and the second reference signal are determined by the comparison device identifier to be sent by the same second device, thereby determining signal data of the second device transmitting the first reference signal and the second reference signal. And the interference data brought.

If the second reference signal sent by the second device does not carry the device identifier of the second device, the time-frequency resource and the used sequence occupied by the second reference signal sent by the at least two second devices may be set as described above. The form is the same, so that the first device can directly obtain the interference data brought by the at least two second devices by receiving the same sequence at a fixed position.

Therefore, the second device can also carry its own traffic load average information to the reference signal and send it out, so that when the first device needs to select the second device to connect, when detecting the reference signal, The traffic load average information of the second device that sends the reference signal can be directly obtained by receiving and/or analyzing the reference signal, and the first device does not need to consume time data to calculate the second device. The interference data greatly saves the time for determining the interference data brought by the at least one second device, and the second device directly sends its own traffic load average information through the reference signal, so that the reference signal is received and/or Or the detected first device directly obtains the service load average information sent by the second device by detecting the reference signal, and the first device is used to calculate the second device service load average signal. A large amount of time, thereby speeding up the speed at which the first device determines the target communication device that is currently suitable for establishing a connection, and improves efficiency.

S403: The first device performs RRM measurement on the at least one second device according to the acquired at least one first reference signal and the interference data.

After the interference data corresponding to the at least one second device is obtained, the first device may perform different operations by using the interference data, and is generally used, and the application is generally required to determine a current suitable connection for the first device. The application scenario of the two devices, the first device may perform RRM measurement according to the interference data, so as to determine, from the RRM measurement result, a second device that is currently suitable for establishing a connection.

For example, in the embodiment shown in FIG. 4, the specific device is further illustrated by a specific application scenario. For example, in a heterogeneous network environment, the first device is specifically a user equipment (English name is User Equipment). The abbreviation is UE, and the current location of the UE may be as described above. For example, the current location of the UE may be a cell covered by a macro base station, that is, a macro cell, and the second device may be specifically All the small cells deployed in the macro cell in which the user equipment is currently camped may be a micro cell or a micro cell, and have wireless and/or all the small cells camped in the macro cell and the macro cell currently camped in the macro cell. Other macro cells and/or small cells of the wired interface, in this example, the third device is specifically the macro cell. Because the small cell and the macro cell supporting the cell on/off function have a wired and/or wireless interface, that is, the UE can directly or indirectly obtain the small cell service load supporting the small cell on/off function by means of the macro cell assistance. Average information. It should be noted that, if the current area of the UE is within a certain range of the UE, the third device may be a small cell included in the current area of the UE, and includes and is included in the current location of the UE. Small cells have other small cells in the connection relationship)

The macro cell is mainly used to provide coverage and real-time data services, and the small cell is mainly used to assist the macro cell when the number of UEs camped in the macro cell is large, and provide the UE with a high-speed data service. However, in general, a large number of UEs do not always reside in the macro cell. In order to save system resources, the macro cell closes a small cell in an area with a small number of UEs. In order to be able to determine when it is necessary to re-enable the small cell, the closed small cell periodically transmits the DRS so that the neighboring UE can detect itself, so that when the UE is closer to a closed small cell, The closed small cell can be found by detecting the DRS, and the UE needs to quickly acquire at least one closed small cell that is found when detecting the DRS, in order to quickly determine a closed small cell that is suitable for establishing a connection. The traffic load average information is used to calculate the interference data caused by the detected closed small cell, thereby performing RRM measurement. When determining a closed small cell suitable for establishing a connection, the closed small cell may After being opened by the UE or enabled by the macro cell, after being turned on, the UE can establish a connection with the UE to obtain a better data service. However, in the prior art, the UE acquires the traffic load average information of the closed small cell for a long time, and even when the UE moves faster, the UE has left the current region (for example, a macro). The cell) still can't get accurate results, which leads to the opening of the wrong small cell and even the failure of the RRM measurement.

To this end, each of the closed small cells is configured to send two different DRSs, which are respectively a first DRS and a second DRS, where the first DRS carries the device identifier of the small cell, and is used to obtain RSRP in the subsequent calculation. The second DRS carries the traffic load average information of the small cell, so that the UE can directly obtain the service load average information of the small cell by detecting the second DRS. Optionally, the second DRS may also carry the device identifier of the small cell. . It should be noted that the small cell that is not closed can also send two different DRSs, so that the UE can obtain the RRM measurement result quickly and accurately.

As an optional manner, the second DRSs of different small cells may be transmitted by using a single frequency network (English name: Single frequency network like, abbreviated as SFN-like), as shown in FIG. 5, that is, different. The second DRS sent by the small cell (small cell 0 and small cell 1) occupies the same time resource and frequency resource and uses the same sequence, so that when the UE performs RRM measurement on one of the detected small cells, The calculation of the interference data part of the RRM may not need to distinguish different small cells corresponding to the second DRS, which further simplifies the process of the RRM measurement by the UE. Here, preferably, since the different small cells corresponding to the second DRS cannot be distinguished, the RRM measurement performed may be represented by RSRQ, or more broadly, the denominator part of the RRM measurement result is reflected in the calculation process of the RRM measurement result. The signal strength of the signal of the target cell to be measured and the traffic load of the target cell to be measured are not only included, but also the signal strength of the signals of all the small cells that can be detected or received by the UE other than the target cell to reach the UE end. And the traffic load of these small cells, where the signal strength can be expressed by the signal power. As shown in FIG. 5, the UE enters the small cell 0. The RRM measurement is performed by the UE, according to the first DRS sent by the small cell 0, processing the received signal strength of the first DRS on the preset time-frequency resource, and calculating the RSRP corresponding to the small cell 0, where the processing includes The signal strength on the time-frequency resource carrying the first DRS is averaged on a preset time-frequency resource, for example, a linear average; then the UE can directly detect the time-frequency resource where the second DRS sent by the small cell 0 is located. And, or receiving, obtaining the detection energy. Optionally, the detection energy may be further averaged on a preset time-frequency resource, without separately distinguishing different small cells, so that the UE obtains the measurement of the small cell 0. Signal power and interference power. It should be noted that, in the foregoing calculation process, the preset time-frequency resource corresponding to the first DRS and the preset time-frequency resource corresponding to the second DRS may be the same or different. Obviously, since the second DRS of different cells is in the form of SFN-like, when the UE detects according to the received time-frequency resource of the second DRS sent by the small cell 0, not only the small cell 0 can be detected. The energy of the second DRS can also detect the energy of the second DRS transmitted by other small cells except the small cell 0, thereby simplifying the process of the UE performing RRM measurement on the small cell 0. Obviously, in the foregoing process, the UE needs to know that the small cell 0 sends the time-frequency resource of the second DRS. In this embodiment, the time-frequency resource of the second DRS sent by the small cell 0 is also sent by other small cells other than the small cell 0. The time-frequency resource of the second DRS, therefore, the time-frequency resource sent by the second DRS may be known to the UE in a predefined manner, or the time-frequency resource of the first DRS and the second DRS may be sent by different small cells by different small cells. The relative time-frequency shift information between the time-frequency resources is obtained. In the latter method, the UE needs to distinguish different small cells by using the received first DRS, and to ensure the signal of the first DRS received by the UE. Quality, therefore, preferably, time resources and/or frequency resources of the first DRS transmitted by different small cells may be staggered from each other, and at the same time, in order to simplify the calculation process of the RRM measurement by the UE to the target cell, the UE is in calculating the RRM measurement result. When the interference energy portion is used, it is not necessary to distinguish different small cells. Therefore, preferably, the time resources and frequency resources of the second DRS sent by different small cells are the same. The relative time-frequency shift information between the time-frequency resources of the first DRS transmitted by the different small cells and the time-frequency resources of the second DRS sent by the different small cells are different, so preferably, the relative time-frequency shift information here is The UE can be made aware by means of a notification, for example, by a device that establishes a link with the UE, for example, a macro cell, to notify the UE.

Further, the type of the UE that can be measured according to the RRM is RSRQ or SINR, The measurement result obtained by the time-frequency resource where the second DRS is located is processed. For example, if the UE performs SINR measurement on the small cell 0, the UE needs to transmit the power contributed by the second DRS sent by the small cell 0 from the RRM measurement result. Deducting from the measurement result embodying the interference, obviously, in this process, the UE needs to know the received power of the second DRS transmitted by the small cell 0 and the service load information of the small cell 0.

In another optional manner, the second DRSs of different small cells may also be sent in a mutually muting manner to ensure that the UE can accurately detect only one time on one time-frequency resource. The second DRS of the small cell. In this example, the time-frequency resources of the second DRS of different small cells are configured to be mutually offset. Specifically, the frequency resources and/or time resources of the second DRS of different small cells are different, so that the small cell A can be made. When the second DRS is sent, all the small cells except the small cell A remain silent (ie, do not send data) on the time-frequency resource where the second DRS sent by the small cell A is located, so that the small cell A can be guaranteed to send the first DRS. The two DRSs are not interfered by the signals of other small cells, thereby ensuring that the UE can accurately detect the second DRS sent by the small cell A.

Finally, it should be noted that, in the present invention, the sequence of the DRS can be obtained by at least one of the following methods: generated by a pseudo-random sequence; or generated by a Zadoff-Chu sequence; or generated by a machine-generated sequence.

In general, the UE needs to know the configuration information of the first DRS corresponding to the cell, and the configuration information includes the candidate sequence of the first DRS, the sending timing, and the UE, before determining the cell corresponding to the first DRS that is detected by the UE according to the detected first DRS. Transmit bandwidth, candidate resource unit pattern of the first DRS in the time-frequency resource block. The configuration information may be known to the UE in a predefined manner or in a pre-configured manner, or may be notified to the UE by the macro cell where the UE is located, or may be notified to the UE by other devices that establish a connection with the UE. When the UE detects the second DRS, the configuration information of the second DRS may be directly learned by the UE through pre-defined or pre-configured or macro cell notification or other device notification established by the UE, or through the configuration of the second DRS. The relationship between the information and the configuration information of the first DRS is such that the UE can derive the configuration information of the second DRS. Obviously, for the latter, the relationship between the configuration information of the second DRS and the configuration information of the first DRS is first known to the UE by means of pre-defined or pre-configured or macro cell notification or other device notification established by the UE. . The specific application scenario to which the embodiment of the present invention is applicable may be performed not only for the UE (the first device) in the heterogeneous network to perform RRM measurement on the small cell (second device) in the macro cell, but also for the UE in the common network. (first device) performing RRM measurement on the cell (second device), and is also applicable to the cell (first device) performing RRM measurement on the cell (second device) (for example, a scenario in which network sensing is performed between cells), and the UE (The first device) performs RRM measurement on the UE (second device) (for example, a scenario of Device-to-Device).

Embodiment 4

Referring to FIG. 6, FIG. 6 is a structural diagram of an apparatus for acquiring interference data according to an embodiment of the present invention, where the interference data acquiring apparatus 600 includes:

The load relationship table obtaining unit 601 is configured to obtain a load relationship table in advance, where the load relationship table includes a correspondence between a second device service load average information and a related identifier of the second device, where the second device is the A communication device in the area where the device is currently located.

The implementation of the load relationship table obtaining unit 601 is similar to that of the first embodiment of the present invention. Please refer to the related description in Embodiment 1 S101, and details are not described herein again.

The detecting unit 602 is configured to perform detection of the reference signal, and obtain a reference signal sent by the at least one second device, where the reference signal has a correlation identifier of the second device that sends the reference signal. The related description in the first embodiment of S102 will not be described here.

The determining unit 603 is configured to determine, from the load relationship table, the service load average information corresponding to the at least one second device according to the related identifier of the at least one second device. The related description in the first example of S103 is not described here.

The interference data acquiring unit 604 is configured to obtain interference data corresponding to the at least one second device according to the determined service load average information of the at least one second device and the reference signal sent by the at least one second device. . The content of the execution of the interference data acquiring unit 604 is similar to that of the embodiment S104 of the present invention. Please refer to the related description in the first embodiment S104, and details are not described herein again.

Optionally, on the basis of the embodiment shown in FIG. 6, the method for obtaining the load relationship table in advance is described.

FIG. 7 is a structural diagram of an apparatus for acquiring interference data according to an embodiment of the present invention. When the related identifier includes a device identifier of a second device, the interference data is acquired before the load relationship table obtaining unit 601 is triggered. Apparatus 600 also includes:

The first obtaining unit 701 is configured to acquire the traffic load average information and the device identifier of the second device, where the third device is connected to the first device in the current location of the first device. Communication equipment.

The description of the implementation of the first obtaining unit 701 is similar to that of the second embodiment of the present invention. Referring to the related description in the second embodiment, the details are not described herein.

The first establishing unit 702 is configured to establish the load relationship table according to the service load average information and the device identifier.

The description of the implementation of the first establishing unit 702 is similar to that of the second embodiment of the present invention. For details, refer to the related description in the second embodiment S202, and details are not described herein again.

The first sending unit 703 is configured to send the load relationship table to the first device.

The content of the first sending unit 703 is similar to that of the second embodiment of the present invention. For details, refer to the related description in the second embodiment S203, and details are not described herein again.

FIG. 8 is a structural diagram of an apparatus for acquiring interference data according to an embodiment of the present invention. When the related identifier includes a time-frequency resource occupied by the second device by the second device, the load relationship table acquiring unit is triggered. Before 601, it also includes:

The second obtaining unit 801 is configured to acquire the average traffic load information of the second device, where the fourth device is a communication device that has established a connection with the first device in the current location of the first device. .

The content of the second obtaining unit 801 is similar to that of the second embodiment of the present invention. For details, refer to the related description in the second embodiment S301, and details are not described herein again. The second establishing unit 802 is configured to establish the load relationship table according to the traffic load average information of the second device and the time-frequency resource occupied by the second device that is sent by the second device.

The implementation of the second establishing unit 802 is similar to that of the second embodiment of the present invention. For details, refer to the related description in the second embodiment S302, and details are not described herein again.

The second sending unit 803 is configured to send the load relationship table to the first device.

The content of the second sending unit 803 is similar to that of the second embodiment of the present invention. For details, refer to the related description in the second embodiment S303, and details are not described herein again.

After the interference data corresponding to the at least one second device is obtained, the interference data may be used to perform different operations, and the application scenario of the second device that is currently suitable for establishing a connection is used. The RRM measurement may be performed based on the interference data to determine, from the results of the RRM measurement, a second device that is currently suitable to establish a connection. In other words, on the basis of FIG. 6, FIG. 7, or FIG. 8, after the interference data acquiring unit 604 is triggered, FIG. 6 is taken as an example. Referring to FIG. 9, FIG. 9 is provided for the implementation of the present invention. A device structure diagram for the interference data acquisition, after the interference data acquisition unit 604 is triggered, the interference data acquisition device 600 further includes:

The measuring unit 901 is configured to perform RRM measurement on the at least one second device according to the obtained reference signal, the traffic load average information corresponding to the at least one second device, and the interference data.

The implementation of the measurement unit 901 is similar to the embodiment S308 of the present invention. Please refer to the related description in the second embodiment S308, and details are not described herein again.

Embodiment 5

Referring to FIG. 10, FIG. 10 is a structural diagram of an apparatus for acquiring interference data according to an embodiment of the present invention, where the interference data acquiring apparatus 1000 includes:

The acquiring unit 1001 is configured to perform detection of a reference signal, and acquire a first reference signal and a second reference signal that are sent by the at least one second device, where the first reference signal includes a second device that sends the first reference signal a device identifier, the second reference signal includes a service load average information of a second device that sends the second reference signal, a time-frequency resource occupied by the first reference signal, and a time-frequency resource occupied by the second reference signal Differently, the second device is in the current location of the first device. communication device.

The implementation of the obtaining unit 1001 is similar to the third embodiment of the present invention. For details, refer to the related description in the second embodiment S401, and details are not described herein again.

The interference data obtaining unit 1002 is configured to obtain interference data corresponding to the at least one second device according to the service load average information of the second device that sends the second reference signal.

The content of the implementation of the interference data obtaining unit 1002 is similar to that of the third embodiment of the present invention. For details, refer to the related description in the second embodiment, and no further details are provided herein.

The measuring unit 1003 is configured to perform RRM measurement on the at least one second device according to the acquired at least one first reference signal and the interference data.

The implementation of the measurement unit 1003 is similar to the third embodiment of the present invention. For details, refer to the related description in the second embodiment S403, and details are not described herein again.

Optionally, it also includes:

The second reference signal further includes a device identifier of the second device that sends the second reference signal. Optionally, it also includes:

Embodiment 6

Referring to FIG. 11, FIG. 11 is a schematic structural diagram of hardware of an interference data acquiring apparatus according to an embodiment of the present invention. The interference data acquiring apparatus 1100 includes a memory 1101 and a receiver 1102, and the memory 1101 and the receiving, respectively. The processor 1103 is connected to the processor 1103. The memory 1101 is configured to store a set of program instructions, and the processor 1103 is configured to invoke the program instructions stored by the memory 1101 to perform the following operations:

The receiver 1102 is configured to acquire a load relationship table, where the load relationship table includes a correspondence between the second device service load average information and a related identifier of the second device, where the second device is the current device Communication device in the area. Performing detection of the reference signal to obtain a reference signal transmitted by the at least one second device, the reference signal having a correlation identifier of the second device transmitting the reference signal.

Determining, from the load relationship table, the service load average information corresponding to the at least one second device according to the correlation identifier of the at least one second device.

Obtaining interference data corresponding to the at least one second device according to the determined traffic load average information of the at least one second device and the transmitted reference signal.

Optionally, the processor 1103 may be a central processing unit (CPU), and the memory 1101 may be an internal memory of a random access memory (RAM) type, and the receiver 1102 may be The physical interface may be an Ethernet interface or an Asynchronous Transfer Mode (ATM) interface. The processor 1103 receiver 1102 and the memory 1101 can be integrated into one or more independent circuits or hardware, such as an Application Specific Integrated Circuit (ASIC).

Example 7

Referring to FIG. 12, FIG. 12 is a schematic structural diagram of hardware of an interference data acquiring apparatus according to an embodiment of the present invention. The interference data acquiring apparatus 1200 includes a memory 1201 and a receiver 1202, and the memory 1201 and the receiving, respectively. The processor 1203 is connected to the processor 1203. The memory 1201 is configured to store a set of program instructions, and the processor 1203 is configured to invoke the program instructions stored by the memory 1201 to perform the following operations:

Triggering the receiver 1202 to perform detection of a reference signal, acquiring a first reference signal and a second reference signal sent by the at least one second device, where the first reference signal includes a second device that sends the first reference signal a device identifier, the second reference signal includes a service load average information of a second device that sends the second reference signal, a time-frequency resource occupied by the first reference signal, and a time-frequency resource occupied by the second reference signal Differently, the second device is a communication device in a region where the first device is currently located.

Obtaining interference data corresponding to the at least one second device according to the traffic load average information of the second device that sends the second reference signal.

Performing RRM measurement on the at least one second device according to the acquired at least one first reference signal and the interference data. Optionally, the processor 1203 may be a middle CPU, the memory 1201 may be a RAM type internal memory, and the receiver 1202 may include a common physical interface, and the physical interface may be an Ethernet interface or an ATM interface. The processor 1203 receiver 1202 and memory 1201 may be integrated into one or more separate circuits or hardware, such as an ASIC.

The first device, the first reference signal and the "first" of the first DRS mentioned in the embodiment of the present invention are only used for name identification, and do not represent the first in the order. The same rules apply to "second", "third," and "fourth,".

It can be clearly understood by those skilled in the art that all or part of the steps in the above embodiment method can be implemented by means of software plus a necessary general hardware platform. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product in essence or in the form of a software product, which may be stored in a storage medium such as a ROM/RAM or a disk. , an optical disk, etc., comprising instructions for causing a computer device (which may be a personal computer, a server, or a network communication device such as a media gateway, etc.) to perform the various embodiments of the present invention or portions of the embodiments described herein. method.

It should be noted that the various embodiments in the present specification are described in a progressive manner, and the same similar parts between the various embodiments may be referred to each other, and each embodiment focuses on different embodiments from other embodiments. Where. In particular, for the device and system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiments. The apparatus and system embodiments described above are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, ie may be located One place, or it can be distributed to multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort.

The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. It should be noted that a number of modifications and refinements can be made by those skilled in the art without departing from the spirit of the invention, and such modifications and refinements are also considered to be within the scope of the invention.

Claims

Rights request

A method for acquiring interference data, comprising:

The first device pre-acquires a load relationship table, where the load relationship table includes a correspondence between the second device service load average information and the related identifier of the second device, where the second device is in the current location of the first device. Communication equipment;

The method according to claim 1, wherein, when the related identifier includes the device identifier of the second device, before the first device obtains the load relationship table in advance, the method further includes:

The third device sends the load relationship table to the first device.

The method according to claim 1, wherein, when the correlation identifier includes the time-frequency resource occupied by the second device by the second device, before the first device acquires the load relationship table in advance, Also includes:

The fourth device sends the load relationship table to the first device.

The method according to any one of claims 1 to 3, characterized in that in the first device And after obtaining the interference data corresponding to the at least one second device according to the determined traffic load average information of the at least one second device and the sent reference signal, the method further includes:

The first device performs radio resource management RRM measurement on the at least one second device according to the obtained reference signal, the service load average information corresponding to the at least one second device, and the interference data.

5. An interference data acquisition device, comprising:

The apparatus according to claim 5, wherein, when the related identifier includes the device identifier of the second device, before the triggering the load relationship table obtaining unit, the method further includes:

The device according to claim 5, wherein, when the correlation identifier includes the time-frequency resource occupied by the second device by the second device, before the triggering the load relationship table acquiring unit, :

a second acquiring unit, configured to acquire, by the second device, the average traffic load information of the second device, where the fourth device is connected to the first device in the current location of the first device communication device;

a second establishing unit, configured to establish the load relationship table according to the service load average information of the second device and the pre-acquired time-frequency resource that the second device sends the reference signal; And sending the load relationship table to the first device.

The device according to any one of claims 5 to 7, further comprising: after triggering the interference data acquiring unit, further comprising:

And a measuring unit, configured to perform radio resource management RRM measurement on the at least one second device according to the obtained reference signal, the service load average information corresponding to the at least one second device, and the interference data.

9. A method for acquiring interference data, comprising:

10. The method according to claim 9, further comprising:

The second reference signal further includes a device identifier of the second device that sends the second reference signal.

The method according to claim 9 or 10, further comprising:

12. An interference data acquisition device, comprising:

13. The device according to claim 12, further comprising:

The device according to claim 12 or 13, further comprising: