CN103974273B - The acquisition methods and system of interference relationships - Google Patents

Abstract

The present invention discloses a method and system for obtaining interference relations, wherein the method includes: controlling the direction of the main transmission beam of the shaped beam of the macro cell so that it points to different directions in different time intervals, wherein the main transmission beam Be in a beam dwell state in a time interval, the beam dwell state is divided according to one or more parameters describing the main transmit beam; corresponding to the beam dwell state, there is at least one half-power beam width located on the main transmit beam The first micro cell outside the first micro cell samples the radio frequency signal from the shaped beam; according to the sampling value of the first micro cell, it is determined that in the sampled beam dwell state, the shaped beam and the first Interference relations in micro-intervals. The present invention solves the problem in the related art that the interference information of the shaped beam of the macro cell to the micro cell cannot be obtained, and improves the reliability of the frequency used by space division between the shaped beam of the micro cell and the macro cell.

Description

Method and system for obtaining interference relationship

technical field

The present invention relates to the communication field, in particular, to a method and system for acquiring interference relations.

Background technique

The combined deployment of macro cells and micro cells to form hierarchical coverage can improve the system throughput of the wireless access network. In order to share spectrum between macro cells and micro cells, a large number of methods have been produced in academia and engineering. For example, micro cells The same frequency is used in the way of time division multiplexing between macro cells. This method of sharing frequency spectrum in the way of time division multiplexing has been discussed in the 3GPP standard organization, and it is called Enhanced Interference Coordination (FeICIC) technology.

With the gradual application of beamforming technology in wireless communication systems, especially with the development of experimental research on active array antenna (AAS) technology in cellular network base stations, how to use the beamforming technology Spectrum multiplexing between the macro cell and the micro cell covered by the macro cell has the following possible implementation methods:

1) The existing time-division multiplexing method is adopted between the macro cell and the micro cell using shaped beams (beams using beamforming technology), that is, the micro cell transmits in the time slot when the macro cell does not send business data Micro cell service signals, such as the use of enhanced interference coordination (FeICIC) technology;

2) The micro cell outside the main beam of the macro cell using the shaped beam adopts the method of space division multiplexing frequency with the macro cell, that is, the micro cell located outside the main beam of the macro cell at least partially uses the main beam. The frequency of the beam sends micro-cell service signals;

3) In the main beam of the macro cell using the shaped beam, the existing time division multiplexing frequency method is adopted between the macro cell and the micro cell; while outside the main beam, the space division is used between the macro cell and the micro cell The method of multiplexing frequency means that the micro cell located outside the main beam of the macro cell at least partially uses the frequency of the main beam to send micro cell service signals;

A cellular telecommunication method and system for enhancing the spectral efficiency of a telecommunication system by channel allocation hierarchical partial reuse of resources is disclosed in the related art: multiple available channels (110) in a cell (15) are divided into logical groups (115, 125), each sharing the same radio resources (105). The system utilizes techniques such as interference diversity, interference suppression and/or interference avoidance to reduce or eliminate interference. Such utilization of resources in the system will create a spectrally efficient network or cell (15) and enable reuse of less than one. The method is used to increase the spectral efficiency of a radio system, specifically comprising the following steps: dividing a plurality of channels in a cell of the radio system into a plurality of logical groups; mapping the first group among the plurality of logical groups onto a first plurality of radio resources for the cell; and, mapping at least one other group of the plurality of logical groups onto a second plurality of radio resources for the cell, wherein the second At least one radio resource of the plurality of radio resources is the same as at least one radio resource of the first plurality of radio resources. Each of the plurality of logical groups has a different frequency modulation sequence; each of the plurality of logical groups has a different training sequence; and each of the plurality of logical groups is transmitted in a different direction Each logical group; the first plurality of radio resources and the second plurality of radio resources are the same; this technology describes the implementation of interference isolation through the beam characteristics of adaptive antennas, and the sharing of resources through frequency hopping, Methods for spatially multiplexing frequencies by sending two beams with the same frequency are known in the art.

A resource allocation method for a hierarchical cellular system and a transmission frame for executing the method are also described in the related art. The macro cell-dedicated resource and the shared resource are respectively controlled based on the usage rate of the macro-cell-dedicated resource and the usage rate of the shared resource. The macro cell reports the use plan of the shared resource used by the macro cell to the small cell (ie, the micro cell), and the small cell can allocate the shared resource to the terminal based on the use plan of the shared resource. A control message related to a usage plan can be sent/received via a transmission frame. Including: before the macro cell uses the shared resource, report the use plan of the shared resource to the small cell, and the small cell allocates resources to the terminals it serves, and this allocation is based on the use plan of the shared resource; the small cell Identify resources that are not used by the macro cell based on the usage plan of the shared resources, and allocate the identified resources to terminals served by the small cell; resources used by the macro cell in the shared resources are allocated to terminals served by the small cell, And the macro cell and the small cell use at least one of a power control scheme, an interference control scheme and a multi-antenna scheme to control interference; the macro cell reports the usage plan of the shared resource to the small cell at predetermined intervals; the macro cell is very small Cells can use the same resources. Further, this technology discloses a device, including: a transmission frame includes a control area with control information of a shared resource usage plan, and the macro cell uses the control information to report the shared resource usage plan to the small cell; specifically, The small cell can use the control information of the macro cell to identify the usage plan of the macro cell for shared resources. This technology discloses a method for the micro cell to determine the resources of the micro cell according to the use of shared resources by the macro cell. Therefore, the method for the macro cell to send its resource usage plan to the micro cell is already a prior art. For multi-antenna transmission schemes, this technique also discloses the use of beamforming functionality: using a suitable beamforming matrix or coding matrix to perform beamforming, each destination node can extract the desired signal with only a small amount of interference, and , the destination node may perform receive beamforming and/or use spatial filtering to reduce interference.

The above background technology shows that for smart antennas/phased array antennas, multi-beam transmission in different directions is a known technology. It is a known technology for a terminal serving a micro cell to configure resources, and it is also a known technology for a destination node to receive a signal sent by beamforming and/or use spatial filtering to reduce interference.

However, when the shaped beam is used to dynamically change the beam pointing to cover different geographical areas in a macro cell, the sidelobe, main lobe and multipath components of the shaped beam will change dynamically with the change of the beam pointing, located in the The intensity of interference from the shaped beam of the macro cell received by the same micro cell outside the main lobe of the shaped beam will also change dynamically with the direction of the shaped beam. In addition, the direction of the antenna of the wireless access point of the micro cell and The random change of the angle between the shaped beams is also a factor that leads to the randomization of the interference intensity. Therefore, in order to ensure the reliability of the frequency used by the space division between the shaped beams of the micro cell and the macro cell, the micro cell needs to use the shaped beam of the macro cell. This dynamic interference information on microcells. However, the micro cell cannot obtain such information from the macro cell's use plan of the shared resource sent by the macro cell, and the related art does not provide a method for obtaining the interference information of the macro cell shaped beam to the micro cell.

For the problem in the related art that the interference information of the shaped beam of the macro cell to the micro cell cannot be obtained, no effective solution has been proposed yet.

Contents of the invention

In view of the problem in the related art that the interference information of the shaped beam of the macro cell to the micro cell cannot be obtained, the present invention provides a method and system for obtaining an interference relationship, so as to at least solve the above problem.

According to one aspect of the present invention, a method for obtaining an interference relationship is provided, including: controlling the direction of the main transmission beam of the shaped beam of the macro cell so that it points to different directions in different time intervals, wherein the main transmission beam Be in a beam dwelling state within one of the time intervals, the beam dwelling state is divided according to one or more parameters describing the main transmit beam; corresponding to the beam dwelling state, there is at least one located in the beam dwelling state a first micro cell outside the half-power beamwidth of the main transmit beam, the first micro cell samples the radio frequency signal from the shaped beam, wherein the macro cell covers the first micro cell, Or the macro cell is adjacent to the macro cell covering the first micro cell; according to the sampling value of the first micro cell, it is determined that in the sampled beam dwell state, the shape of the shaped beam and the Describe the interference relationship of the first small interval.

According to another aspect of the present invention, there is also provided a system for obtaining an interference relationship, including: a macro cell shaped beam transmitting unit, located in the macro cell, for transmitting a shaped beam; a macro cell shaped beam transmitting control unit, Located in the macro cell, it is used to control the direction of the main transmission beam of the shaped beam of the macro cell so that it points to different directions in different time intervals, wherein the main transmission beam is in one beam within one time interval a resident state, the beam resident state is divided according to one or more parameters describing the main transmit beam; a micro cell measurement unit, located in a micro cell, used to sample radio frequency signals from the shaped beam, Wherein, the macro cell covers the micro cell, or the macro cell is adjacent to the macro cell covering the micro cell; the interference relationship management unit is configured to determine the In the sampled beam dwell state, the interference relationship between the shaped beam and the micro interval.

Through the present invention, the direction of the main transmission beam of the shaped beam of the macro cell is controlled so that it points to different directions in different time intervals, wherein the main transmission beam is in a beam dwell state in a time interval, and the beam stays The stay state is divided according to one or more parameters describing the main transmit beam; corresponding to the beam dwell state, there is at least one first microcell located outside the half-power beamwidth of the main transmit beam, and the first microcell pair comes from The radio frequency signal of the shaped beam is sampled, wherein the macro cell covers the first micro cell, or the macro cell is adjacent to the macro cell covering the first micro cell; according to the sampling value of the first micro cell, it is determined that the sampled In the beam dwell state, the way of the interference relationship between the shaped beam and the first micro-section solves the problem that the interference information of the shaped beam of the macro cell to the micro-cell cannot be obtained in the related technology, and improves the shaping of the micro-cell and the macro cell. Spatial division between beams using frequency reliability.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

FIG. 1 is a flowchart of a method for obtaining an interference relationship according to an embodiment of the present invention;

FIG. 2 is a structural block diagram of a system for acquiring interference relationships according to an embodiment of the present invention;

FIG. 3 is a flow chart of a method for obtaining an interference relationship according to Embodiment 1 of the present invention;

4 is a flow chart of a communication method for a micro cell space division multiplexing frequency according to Embodiment 2 of the present invention;

FIG. 5 is a flow chart of a method for a micro cell assisting a macro cell in transmitting signals with a shaped beam according to Embodiment 4 of the present invention;

FIG. 6 is a schematic composition diagram of a system for acquiring interference relations according to Embodiment 5 of the present invention.

Detailed ways

Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

In this embodiment, a method for obtaining an interference relationship is provided. FIG. 1 is a flowchart of a method for obtaining an interference relationship according to an embodiment of the present invention. As shown in FIG. 1 , the method includes the following steps:

Step S102, controlling the pointing of the main transmit beam of the shaped beam of the macro cell so that it points to different directions in different time intervals, wherein the main transmit beam is in a beam dwell state within a time interval, and the beam dwell state According to one or more parameters describing the main transmit beam, for example, it can be divided into a beam dwell state according to the elevation angle of the main beam every 1 degree;

Step S104, corresponding to the beam dwell state, there is at least one first microcell located outside the half-power beamwidth of the main transmit beam, and the first microcell samples the radio frequency signal from the shaped beam, wherein the macro The cell covers the first micro cell, or the macro cell is adjacent to the macro cell covering the first micro cell;

Step S106, according to the sampling value of the first micro cell, determine the interference relationship between the shaped beam and the first micro interval in the sampled beam dwell state.

In this embodiment, through the above-mentioned steps, the first micro cell samples the beam dwell state of the shaped beam of the macro cell, and determines, according to the sampled value, the difference between the shaped beam and the first micro cell in each sampled beam dwell state. The interference relationship between the cells, so that the interference relationship between the shaped beam and the first micro cell can be easily obtained when the shaped beam of the macro cell is in each beam dwelling state, which solves the problem that the macro cell cannot be obtained in the related technology The problem of the interference information of the shaped beam to the micro cell improves the reliability of the space division frequency used between the micro cell and the macro cell shaped beam.

Preferably, the above-mentioned parameters describing the main transmitting beam may include but not limited to one or more of the following combinations: parameters describing the direction of the main transmitting beam; parameters describing the geographical space covered by the main transmitting beam; describing the location of the main transmitting beam in Specific pointing or dwell time in a specific geographic space; beam width of the main transmitting beam; power parameters of the main transmitting beam; transmitting bandwidth of the main transmitting beam; frequency occupied by the transmitting channel of the main transmitting beam.

As a preferred implementation, the interference relationship between the shaped beam and the first micro cell can be divided into a strong interference beam dwell state and a weak interference beam dwell state, for example, if the received power or received If the signal strength is greater than the preset first interference threshold, the corresponding sampled beam dwell state may be determined as the strong interference beam dwell state of the first micro cell; or, if the received power or received signal obtained according to the sampling value If the intensity is smaller than the preset second interference threshold, the corresponding sampled beam dwell state may be determined as the weak interference beam dwell state of the first micro cell.

Preferably, the weak interference beam dwell states of two or more first small cells may constitute a weak interference beam dwell state sequence of the first small cell; and/or, two or more first small cells The camping states of strong interference beams of the cells may constitute a sequence of camping states of strong interference beams of the first micro cell.

Preferably, when a beam-dwelling state is a weak-interference beam-dwelling state of two or more first micro cells, the two or more first micro cells constitute the affected Weak interference cell group; and/or, when a beam dwell state is the strong interference beam dwell state of two or more first micro cells, two or more first micro cells constitute the beam Strongly interfered cell group in the camping state.

As a preferred implementation manner, the interference relationship between the shaped beam and the first micro cell can be further subdivided, for example, combining with the first micro cell to divide the sampling method of the radio frequency signal from the shaped beam, Then the interference relationship between the shaped beam and the first microcell can be divided into strong in-band interference beam dwell state, weak in-band interference beam dwell state, strong out-of-band interference beam dwell state, and weak out-of-band interference beam dwell state. stay status. The specific division method can be as follows:

In the case where the first microcell samples the radio frequency signal from the shaped beam by sampling the radiation within the working frequency band of the shaped beam, and the sampling result is greater than the preset first interference threshold, determine the difference between the shaped beam and the first interference threshold. The interference relationship of a micro cell is a strong in-band interference beam dwell state; or,

When the first micro cell samples the radio frequency signal from the shaped beam by sampling the radiation within the working frequency band of the shaped beam, and the sampling result is smaller than the preset second interference threshold, determine the shaped beam and the second interference threshold The interference relationship of a micro cell is the weak in-band interference beam dwell state; or,

When the first micro cell samples the radio frequency signal from the shaped beam by sampling the out-of-band radiation of the shaped beam, and the sampling result is greater than the preset first interference threshold, determine the shaped beam and the first interference threshold The interference relationship of a micro cell is a strong out-of-band interference beam dwell state; or,

When the first micro cell samples the radio frequency signal from the shaped beam by sampling the out-of-band radiation of the shaped beam, and the sampling result is smaller than the preset second interference threshold, determine the shaped beam and the second interference threshold The interference relationship of a micro cell is the weak out-of-band interference beam dwell state.

As a preferred implementation manner, after acquiring the interference relationship between the shaped beam and the first micro cell, the first micro cell may also use the interference relationship to perform communication. For example, if a sequence composed of at least two beam dwell states is called a beam dwell state sequence, then in the case where the frequency spectrum is used in the form of space division multiplexing frequency between the first micro cell and the macro cell using the shaped beam , the information of the beam dwell state sequence of the main transmit beam of the shaped beam of the macro cell can also be obtained; it is judged whether there is a weak interference beam dwell state of the first micro cell in the beam dwell state sequence, and if so, the first micro cell During the existence time of the weak interference beam dwell state, the frequency of the main transmission beam is used to communicate with the terminal served by the first micro cell; if not, the first micro cell gives up using the frequency of the main transmission beam; In the case that a micro cell and a macro cell using a shaped beam use spectrum in the form of adjacent frequencies, the information of the beam dwell status sequence of the main transmit beam of the shaped beam of the macro cell can also be obtained; Whether there is a weak out-of-band interference beam dwell state of the first microcell in the state sequence, if yes, there is a frequency between the frequency of the main transmit beam used by the first microcell during the existence time of the weak out-of-band interference beam dwell state The frequency of the first guard interval receives the signal from the terminal served by the first microcell; if not, the first microcell receives the signal from the terminal served by the first microcell using the frequency with the second guard interval between the frequency of the main transmit beam signal, wherein the frequency bandwidth of the first guard interval is smaller than the frequency bandwidth of the second guard interval.

Preferably, if there are multiple main beams in the macro cell, a beam dwell state is jointly formed by the beam dwell states of each main beam.

Preferably, the manner in which the first microcell samples the radio frequency signal from the shaped beam may include but not limited to at least one of the following methods: sampling is implemented by the wireless access point of the first microcell; deployment in the first microcell Sampling is implemented by a measurement unit; sampling is performed by a terminal located in the microcell or by a terminal whose distance from the first microcell is smaller than a preset threshold.

As a preferred implementation, in addition to the presence of the first microcell to sample the RF signal from the shaped beam, for each beam dwell state, there may also be at least one microcell located within the half-power beamwidth of the main transmit beam The second microcell samples the radio frequency signal from the shaped beam, wherein the macrocell covers the second microcell, or the macrocell is adjacent to the macrocell covering the second microcell, which is mainly deployed in the electromagnetic wave In scenarios that are difficult to cover, for example, a micro cell located in a basement or in an underground transportation facility; according to the sampling value of the second micro cell, determine the interference between the shaped beam and the second micro cell in the sampled beam dwell state relation.

As a preferred implementation, the interference relationship between the shaped beam and the second micro cell can also be divided into a strong interference beam dwell state and a weak interference beam dwell state, for example, if the received power obtained according to the sampling value or If the received signal strength is greater than the preset first interference threshold, the corresponding sampled beam dwell state may be determined as the strong interference beam dwell state of the second micro cell; or, if the received power or received If the signal strength is less than the preset second interference threshold, the corresponding sampled beam dwell state may be determined as the weak interference beam dwell state of the second micro cell.

Preferably, the weak interference beam dwell states of two or more second micro cells may constitute a sequence of weak interference beam dwell states of the second micro cells; and/or, two or more second micro cells The camping states of strong interference beams of the cell may constitute a sequence of camping states of strong interference beams of the second micro cell.

Preferably, when a beam-dwelling state is a weak-interference beam-dwelling state of two or more second micro cells, the two or more second micro-cells constitute the subject of the beam-dwelling state. Weak interference cell group; and/or, when a beam dwell state is the strong interference beam dwell state of two or more second micro cells, two or more second micro cells constitute the beam Strongly interfered cell group in the camping state.

As a preferred implementation, the interference relationship between the shaped beam and the second microcell can be further subdivided, for example, the sampling method of the radio frequency signal from the shaped beam can be divided in combination with the second microcell , then the interference relationship between the shaped beam and the second microcell can be divided into strong in-band interference beam dwell state, weak in-band interference beam dwell state, strong out-of-band interference beam dwell state, weak out-of-band interference beam Resident status. The specific division method can be as follows:

When the second microcell samples the radio frequency signal from the shaped beam by sampling the radiation within the working frequency band of the shaped beam, and the sampling result is greater than the preset first interference threshold, determine the shaped beam and the first interference threshold The interference relationship of the second microcell is the strong in-band interference beam dwell state; or, the sampling method of the radio frequency signal from the shaped beam in the second microcell is to sample the radiation in the working frequency band of the shaped beam, and the sampling result If it is less than the preset second interference threshold, it is determined that the interference relationship between the shaped beam and the second micro cell is a weak in-band interference beam dwell state; The sampling method is to sample the working out-of-band radiation of the shaped beam, and when the sampling result is greater than the preset first interference threshold, it is determined that the interference relationship between the shaped beam and the second micro cell is a strong out-of-band interference beam dwell state; or, in the case that the second micro cell samples the radio frequency signal from the shaped beam by sampling the out-of-band radiation of the shaped beam, and the sampling result is less than the preset second interference threshold, determine the shaped beam The interference relationship between the shaped beam and the second micro cell is a weak out-of-band interference beam dwell state.

As a preferred implementation manner, after acquiring the interference relationship between the shaped beam and the second micro cell, the second micro cell may also use the interference relationship to perform communication. For example, a sequence composed of at least two beam dwell states is called a beam dwell state sequence, and in the case of co-frequency operation between the second micro cell and the shaped beam of the macro cell covering the second micro cell, The information of the beam dwell state sequence of the main transmit beam of the shaped beam of the macro cell can be obtained; it is judged whether there is a strong in-band interference beam dwell state of the second micro cell in the beam dwell state sequence, and if so, it covers the second The terminal served by the shaped beam of the macro cell of the micro cell is located within the coverage of the micro cell, and the second micro cell uses the frequency of the main transmit beam to transmit signals to the terminal during the existence time of the strong in-band interference beam dwell state ; If not, the second micro cell gives up using the frequency of the main transmit beam during the existence time of the strong in-band interference beam dwell state.

Preferably, the manner in which the second micro cell uses the frequency of the main transmit beam to transmit signals to the terminal during the existence time of the strong in-band interference beam dwell state may be: the presence of the second micro cell in the strong in-band interference beam dwell state Within a time period, transmit signals to the terminal jointly with the shaped beam of the macro cell covering the second micro cell in a transmit diversity manner or in a multiple-input multiple-output (Multiple-Input Multiple-Output, MIMO for short) manner.

Preferably, if there are multiple main beams in the macro cell, a beam dwell state is jointly formed by the beam dwell states of each main beam.

Preferably, the manner in which the second microcell samples the radio frequency signal from the shaped beam may also include but not limited to at least one of the following methods: sampling is implemented by the wireless access point of the second microcell; The deployed measurement unit implements sampling; the sampling is performed by a terminal located in the microcell or by a terminal whose distance from the second microcell is smaller than a preset threshold.

Corresponding to the above method, this embodiment also provides a system for obtaining an interference relationship. The system is used to implement the above embodiment and preferred implementation manners, and what has already been described will not be repeated. As used below, the term "unit" may be a combination of software and/or hardware that realizes a predetermined function.

Fig. 2 is a structural block diagram of an acquisition system for interference relations according to an embodiment of the present invention. As shown in Fig. 2, the system includes: a macro cell shaped beam transmitting unit 22, a macro cell shaped beam transmitting control unit 24, a micro cell measurement The unit 26 and the interference relationship management unit 28 will be described in detail below.

The macro cell shaped beam transmitting unit 22 may be located in the macro cell for transmitting the shaped beam; the macro cell shaped beam transmitting control unit 24 is connected with the macro cell shaped beam transmitting unit 22 for controlling the macro cell shaped beam The main transmit beam of the beam is directed so that it points to different directions in different time intervals, wherein the main transmit beam is in a beam dwell state in a time interval, and the beam dwell state is based on one or more of the descriptions of the main transmit beam The division of various parameters; the micro cell measurement unit 26 is connected to the macro cell shaped beam transmission control unit 24, and can be located in the micro cell or the distance from the micro cell is less than a preset threshold, and is used to measure the radio frequency signal from the shaped beam Sampling, wherein the macro cell covers the micro cell, or the macro cell is adjacent to the macro cell covering the micro cell; the interference relationship management unit 28 is connected to the micro cell measurement unit 26, and is used to determine according to the sampling value of the micro cell measurement unit 26 In the sampled beam dwell state, the interference relationship between the shaped beam and the micro-interval.

Preferably, the interference relationship management unit 28 may be configured to determine the interference relationship between the shaped beam and the first small cell when the sampling value or the power or signal strength calculated using the sampling value is greater than a preset first interference threshold is a strong interference beam dwell state; or, when the sampling value or the power or signal strength calculated using the sampling value is less than the preset second interference threshold, determine the interference relationship between the shaped beam and the first micro cell as Weak interference beam dwell state.

Preferably, the implementation of the interference relationship management unit 28 may be one or a combination of the following: implemented in the wireless access point of the micro cell; implemented in the access point of the macro cell; implemented in the radio resource management network on the network side implemented within the unit.

Preferably, the implementation of the micro cell measurement unit 26 may be one or a combination of the following: sampling is achieved by a wireless access point in the micro cell; sampling is achieved by a measurement unit deployed in the micro cell; Sampling is implemented by mobile terminals in or near the microcell.

The following description will be made in combination with preferred embodiments, and the following preferred embodiments combine the above-mentioned embodiments and preferred implementation modes thereof.

In the following preferred embodiments, a method for obtaining the interference relationship, a micro cell communication method and system is provided, and how to obtain the interference information generated by the shaped beam of the macro cell to the micro cell and establish a macro cell shaped beam based on the information The interference relationship between the beam and the micro cell, and based on the interference relationship, a micro cell communication method is given, and further, a system for obtaining the interference relationship between the shaped beam of the macro cell and the micro cell is given .

Wherein, the above-mentioned method for obtaining the interference relationship can be used to obtain the interference relationship between the micro cell and the macro cell using the shaped beam, including: controlling the direction of the main transmit beam of the shaped beam of the macro cell, so that the above-mentioned main transmit beam is in different Pointing to different directions within a time interval, the above-mentioned main transmit beam has a beam dwell state in one of the above-mentioned time intervals, and at least two of the above-mentioned beam dwell states constitute a beam dwell state sequence; corresponding to one of the above-mentioned beam dwell states state, at least one microcell located outside the half-power beamwidth of the above-mentioned main transmit beam samples the radio frequency signal from the above-mentioned shaped beam; according to the above-mentioned sampling result, the corresponding sampled beam dwell state is determined as the above-mentioned The weak interference beam dwell state of the micro cell may be determined as the strong interference beam dwell state of the micro cell.

Preferably, the method may further include: at least one micro cell located within the half-power beamwidth of the main transmit beam samples the radio frequency signal from the above-mentioned shaped beam, and, according to the above-mentioned sampling result, correspondingly The sampled beam dwell state is determined as the weak interference beam dwell state of the micro cell or determined as the strong interference beam dwell state of the micro cell.

The aforementioned microcell located outside the half-power beamwidth of the main transmitting beam may sample the radio frequency signal from the aforementioned shaped beam by: sampling the radiation within the working frequency band of the shaped beam and/or sampling the radio frequency signal of the shaped beam. The out-of-band radiation of the beam is sampled; according to the sampling method of the radio frequency signal from the above-mentioned shaped beam, the above-mentioned weak interference beam dwell state is further determined as the weak in-band interference beam dwell state and/or the weak out-of-band interference beam dwell state stay state; according to the sampling method of the radio frequency signal from the above-mentioned shaped beam, the above-mentioned strong interference beam dwell state is further determined as a strong in-band interference beam dwell state and/or a strong out-of-band interference beam dwell state.

The weak interference beam dwell states of two or more micro cells constitute the weak interference beam dwell state sequence of the micro cells; the strong interference beam dwell states of two or more micro cells constitute the micro cell The strong interference beam dwell state sequence in the area.

When a beam dwell state is a weakly interfered beam dwell state of two or more micro cells, the above two or more micro cells constitute a group of weakly interfered cells in the beam dwell state; When one beam camping state is a strongly interfered beam camping state of two or more micro cells, the two or more micro cells constitute a strongly interfered cell group in this beam camping state.

Wherein, the above macro cell covers the above micro cell, or the above macro cell is adjacent to the macro cell covering the above micro cell.

Preferably, the micro cell samples the radio frequency signal from the above-mentioned shaped beam outside the half-power beamwidth of the above-mentioned main transmitting beam, and the implementation method may be one of the following or a combination thereof:

1) Sampling is realized by the wireless access point of the micro cell;

2) Sampling is realized by the measurement unit deployed in the micro cell;

3) Sampling is implemented by a terminal located in or near the micro cell.

Wherein, the above resident state includes one or more of the following parameters describing the main transmitting beam: the parameter describing the direction of the main transmitting beam or the parameter describing the geographical space covered by the main transmitting beam; dwell time in geographic space; beam width of the main transmit beam; power parameters of the main transmit beam; transmit bandwidth of the main transmit beam and/or frequency occupied by the transmit channel of the main transmit beam.

In a macro cell using an array antenna, when there is more than one main beam, the camping state is jointly formed by the camping parameters of each main beam.

Among them, the methods for communicating based on the obtained interference relationship may include the following three types:

Method 1: A communication method of space-division multiplexing frequency in a micro cell, which is based on the above-mentioned method of obtaining the interference relationship, and is suitable for use in the form of space-division multiplexing frequency between a micro cell and a macro cell using a shaped beam Spectrum, including: obtaining the beam dwell state sequence information of the main transmit beam of the shaped beam of the macro cell, and judging whether there is a weak interference beam dwell state corresponding to the above micro cell in the above beam dwell state sequence, and if there is the above weak interference In the beam-on state, the micro cell uses the frequency of the above-mentioned main transmit beam to communicate with the terminal served by the micro cell during the existence time of the above-mentioned weak interference beam-on state; if the above-mentioned weak interference beam-on state does not exist, the micro cell Abandon the use of the frequency of the above-mentioned main transmit beam.

Method 2: A communication method for micro cells to avoid adjacent frequency interference. This method is based on the above-mentioned method of obtaining interference relations, and is suitable for use of spectrum in adjacent frequencies between micro cells and macro cells using shaped beams, including : Obtain the beam dwell state sequence information of the main transmit beam of the shaped beam of the macro cell, and determine whether there is a weak out-of-band interference beam dwell state corresponding to the above micro cell in the above beam dwell state sequence, if there is the above weak out-of-band interference In the interference beam dwell state, the micro cell receives a signal from a terminal served by the micro cell at a frequency with a first guard interval between the frequency of the main transmit beam and the frequency of the main transmit beam during the existence time of the weak out-of-band interference beam dwell state; if If there is no such weak out-of-band interference beam dwelling state, the micro cell uses a frequency with a second guard interval between the frequency of the main transmit beam to receive signals from terminals served by the micro cell; the frequency bandwidth of the first guard interval is less than The frequency bandwidth of the second guard interval.

Method 3: A method in which a micro cell assists a macro cell to transmit signals with a shaped beam. This method is based on the above-mentioned method for obtaining interference relations, and is suitable for co-frequency work between a micro cell and a shaped beam of a macro cell covering the micro cell. , including: obtaining the beam dwell state sequence information of the main transmit beam of the shaped beam of the macro cell, and judging whether there is a strong in-band interference beam dwell state corresponding to the above micro cell in the above beam dwell state sequence, and if there is the above strong In-band interference beam dwell state, and the terminal served by the shaped beam of the macro cell is within the coverage of the micro cell, then the micro cell uses the above-mentioned main transmission during the existence time of the strong in-band interference beam dwell state The frequency of the beam transmits signals to the above-mentioned terminal; otherwise, the micro cell gives up using the frequency of the above-mentioned main transmitting beam during the existence time of the above-mentioned strong in-band interference beam dwell state.

Preferably, during the existence time of the camping state of the strong in-band interference beam, the shaped beams of the micro cell and the macro cell can jointly transmit data to the above terminal in a transmit diversity mode or in a MIMO mode.

Preferably, the implementation method of determining that the terminal served by the shaped beam of the macro cell is located within the coverage of the micro cell may be: use the terminal to measure the signal strength of the micro cell to determine, or use the micro cell to receive the signal transmitted by the terminal Sure;

Preferably, the implementation method of determining that the terminal is the terminal served by the macro cell during the existence time of the strong in-band interference beam dwell state may be: the macro cell determines according to the scheduling information of the terminal by the scheduler.

Wherein, the above-mentioned system for obtaining the interference relationship can be used to obtain the interference relationship between the micro cell and the macro cell using the shaped beam, including: a macro cell shaped beam transmitting unit for transmitting the shaped beam; The shaped beam emission control unit is used to control the beam dwell state of the above-mentioned shaped beam; the micro-cell measurement unit is used to sample the radio frequency signal from the above-mentioned shaped beam; the interference relationship management unit is configured according to the sampling of the above-mentioned micro-cell measurement unit As a result, the interference relationship between the micro cell and the sampled shaped beam is determined.

Preferably, the macro cell shaped beam transmission control unit controls the direction of the main transmission beam of the shaped beam transmitted by the macro cell shaped beam transmission unit in the macro cell, so that the above-mentioned main transmission beam points to different directions in different time intervals , the above-mentioned main transmit beam has a beam-dwelling state within one of the above-mentioned time intervals, and at least two of the above-mentioned beam-dwelling states constitute a beam-dwelling state sequence; The microcell measurement unit outside the half-power beamwidth of the transmitting beam samples the radio frequency signal from the above-mentioned shaped beam; the interference relationship management unit determines the corresponding sampled beam dwell state as the above-mentioned microcell according to the above-mentioned sampling result The weak interference beam dwell state of the small cell or the strong interference beam dwell state of the above-mentioned micro cell.

Below in conjunction with specific embodiment carry out more detailed description:

When a macro cell uses shaped beams to achieve macro cell coverage and micro cells are deployed in the macro cell, the main beam pointing of the shaped beam will concentrate the energy of radio radiation in the local geographical area corresponding to the main beam pointing, and at the same time make The power leaked over the local geographic area corresponding to the side lobes of the shaped beam is significantly less than the power in the main beam. When the leakage power from the shaped beam received by the micro cell in the local geographical area corresponding to the side lobe of the shaped beam is lower than the strength required for the micro cell communication, the micro cell can use the space division multiplexing frequency way with the shared frequency of the macrocell's shaped beam. However, in order to achieve the shared frequency, it is necessary to overcome or exploit the randomness of the leakage power from the shaped beam due to: side effects caused by different beamforming algorithms and or quantization errors in the beamforming process. Randomness of lobe leakage power; randomness of main lobe beam pointing and beam width caused by different beamforming algorithms and quantization errors in beamforming processing; interference of shaped beams to microcells caused by randomness of geographical environment The randomness of the main lobe and/or side lobe caused by the geographical environment will change dynamically with the change of the beam pointing. The same micro cell located outside the main lobe of the shaped beam receives The strength of the interference of the shaped beam will also change dynamically with the direction of the shaped beam. In addition, the random change of the angle between the antenna direction of the wireless access point of the micro cell and the shaped beam is also a factor that leads to the randomization of the interference intensity. Reliability, the micro cell needs to use the dynamic interference information of the macro cell shaped beam to the micro cell. However, the micro cell cannot obtain such information from the macro cell's use plan of the shared resource sent by the macro cell, and the related art does not provide a method for obtaining the interference information of the macro cell shaped beam to the micro cell.

Obtaining the dynamic data of the interference of the shaped beam of the macro cell to the micro cell is the key to realize the flexible spectrum sharing between the macro cell and the micro cell. The following example illustrates how to obtain the interference information generated by the shaped beam of the macro cell to the micro cell and Based on this information, the interference relationship between the shaped beam of the macro cell and the micro cell is established; based on the above interference relationship, at least one communication method for the micro cell is given, and further, a method for obtaining the relationship between the shaped beam of the macro cell and the micro cell is given. Interference relationship between the system.

Embodiment one

This preferred embodiment provides a method for obtaining an interference relationship, which is used to obtain the interference relationship between a micro cell and a macro cell using a shaped beam. FIG. 3 is a flow chart of the method for obtaining an interference relationship according to Embodiment 1 of the present invention Figure, as shown in Figure 3, the method comprises the steps:

Step S302, controlling the pointing of the main transmit beam of the shaped beam of the macro cell so that the above-mentioned main transmit beam points to different directions in different time intervals, the above-mentioned main transmit beam has a beam dwell state in one of the above-mentioned time intervals, at least two The above-mentioned beam dwell states constitute a beam dwell state sequence;

Step S304, corresponding to one of the aforementioned beam dwell states, at least one micro cell located outside the half-power beamwidth of the aforementioned main transmit beam samples the radio frequency signal from the aforementioned shaped beam;

Step S306, according to the sampling result, determine the corresponding sampled beam camping state as the weak interference beam camping state of the micro cell or as the strong interference beam camping state of the micro cell.

Wherein, in step S306, in each beam dwell state, or after a beam dwell sequence is completed, the corresponding sampled beam dwell state is determined as the weak interference beam dwell state of the micro cell or as the micro cell strong interference beam dwell state.

The above-mentioned main transmit beam has a main transmit beam dwell state within one of the above-mentioned time intervals. Preferably, when there is only one main transmit beam, the beam dwell state of the main transmit beam includes one or a combination of the following parameters: The parameters describing the direction of the main transmitting beam or the parameters describing the geographical space covered by the main beam; the parameters describing the residence time of the main transmitting beam in a specific direction or in a specific geographical space; the beam width parameters of the main transmitting beam; the parameters of the main transmitting beam Power parameter; the transmission bandwidth of the main transmission beam and/or the frequency parameter occupied by the transmission channel of the main transmission beam.

When there are two or more main transmit beams, the beam dwell state of the above-mentioned main transmit beams includes the configuration parameters of each single main beam. For example, when the main transmit beam has a first main transmit beam and a second main transmit beam, the beam dwell status of the above-mentioned main transmit beam includes:

A combination of one or more of the following parameters of the first main transmit beam: a parameter describing the direction of the main transmit beam or a parameter describing the geographic space covered by the main beam; a dwell time parameter; a beamwidth parameter of the main transmit beam; a power parameter of the main transmit beam; a transmit bandwidth of the main transmit beam and/or a frequency occupied by a transmit channel of the main transmit beam; and,

A combination of one or more of the following parameters of the second main transmit beam: a parameter describing the direction of the main transmit beam or a parameter describing the geographic space covered by the main beam; The dwell time parameter; the beam width parameter of the main transmit beam; the power parameter of the main transmit beam; the transmit bandwidth of the main transmit beam and/or the frequency parameter occupied by the transmit channel of the main transmit beam.

Preferably, the above-mentioned method for obtaining the interference relationship may further include: at least one micro cell located within the half-power beamwidth of the above-mentioned main transmit beam samples the radio frequency signal from the above-mentioned shaped beam, and, according to the above-mentioned sampling result and determining the corresponding sampled beam dwell state as the weak interference beam dwell state of the micro cell or as the strong interference beam dwell state of the micro cell. In this embodiment, the microcell located within the half-power beamwidth of the above-mentioned main transmit beam samples the radio frequency signal from the above-mentioned shaped beam, in order to obtain the shaped beam in at least one of the following two coverage scenarios The strength of the radio frequency signal: When the micro cell is deployed in a scenario where electromagnetic waves are difficult to cover, such as in a basement or in an underground transportation facility, in the micro cell deployment mode, even when the macro cell shaped beam covers the micro cell In the case of geographical location, the micro cell can also potentially use the frequency of the shaped beam; when the micro cell is deployed in a geographical space environment where the macro cell can cover, when the macro cell shaped beam sends a signal to the terminal within the coverage of the micro cell When sending signals, the micro cell may assist the macro cell in a coordinated manner to send signals to the above-mentioned terminal with a shaped beam, so as to increase the transmission rate for the above-mentioned terminal or improve the spectral efficiency of the transmission for the above-mentioned terminal.

Preferably, the manner in which the microcell located outside the half-power beamwidth of the main transmit beam samples the radio frequency signal from the above-mentioned shaped beam may be: sampling the radiation within the working frequency band of the shaped beam and/or The out-of-band radiation of the shaped beam is sampled. Here, sampling the radiation in the working frequency band of the shaped beam is used to establish the same-frequency interference relationship between the micro-cell and the above-mentioned main transmission beam. The same-frequency interference relationship is used for the micro-cell to use the above-mentioned The operating frequency of the main transmitting beam, or the micro cell improves the spectral efficiency in the transmission to the terminal by means of coordinated transmission. In the present invention, the operating frequency refers to the in-band frequency; the radiation outside the operating frequency band of the shaped beam is sampled It is used to establish the adjacent frequency interference relationship between the micro cell and the above-mentioned main transmission beam. The adjacent frequency interference relationship is used for the micro cell to avoid the out-of-band leakage power of the above-mentioned main transmission beam in an opportunistic manner. A specific example of the out-of-band leakage power of the beam is: when the working frequency of the shaped beam of the macro cell is the downlink spectrum in the FDD licensed spectrum, and the working frequency spectrum of the micro cell is the spectrum used in time division duplex mode, the main transmission frequency of the macro cell When the beam is at a specific angle for transmitting towards the micro cell, the out-of-band leakage power of the main transmit beam of the macro cell will interfere with the uplink receiving channel of the micro cell, and when the main transmit beam of the macro cell is at other angles, the main transmit power of the macro cell received by the micro cell The out-of-band leakage power of the transmit beam will be very weak, therefore, the micro cell can use the guard band between the operating frequency of the macro cell shaped beam and the micro cell operating frequency under the specific beam dwell state of the macro cell main transmit beam. Uplink reception.

According to the sampling method of the radio frequency signal from the above-mentioned shaped beam, the above-mentioned weak interference beam dwell state is further determined as the weak in-band interference beam dwell state and/or the weak out-of-band interference beam dwell state; According to the sampling method of the radio frequency signal of the shaped beam, the above-mentioned strong interference beam dwell state is further determined as a strong in-band interference beam dwell state and/or a strong out-of-band interference beam dwell state.

The weak interference beam dwell states of two or more micro cells constitute the weak interference beam dwell state sequence of the micro cells; the strong interference beam dwell states of two or more micro cells constitute the micro cell The strong interference beam dwell state sequence in the area.

When a beam dwell state is a weakly interfered beam dwell state of two or more micro cells, the above two or more micro cells constitute a group of weakly interfered cells in the beam dwell state; When one beam camping state is a strongly interfered beam camping state of two or more micro cells, the two or more micro cells constitute a strongly interfered cell group in this beam camping state.

Wherein, the above macro cell covers the above micro cell, or the above macro cell is adjacent to the macro cell covering the above micro cell.

The above-mentioned interference relationship refers to the corresponding relationship between the intensity of the interference suffered by the micro cell and the beam dwell state of the shaped beam of the macro cell that generates the interference. The above-mentioned macro cell is the macro cell where the micro cell is located or the macro cell where the micro cell is located. Adjacent macrocells.

An implementation method for representing the above-mentioned interference relationship may be to construct an interference relationship table, and Table 1 is an interference relationship table between the shaped beams of the micro cell and the macro cell A according to Embodiment 1 of the present invention:

Table 1

As shown in Table 1, in the interference relationship table, a micro cell corresponds to the beam dwell sequence of at least one macro cell’s shaped beam, and the interference relationship between the micro cell 1 and the macro cell A’s shaped beam is, in a In the beam-dwelling sequence including 7 beam-dwelling states, the 7 beam-dwelling states are the beam-dwelling state (1) of macro cell A to the beam-dwelling state (7) of macro cell A, and the beam-dwelling state of macro cell A Beam dwell states (5) to (7) are the weak interference beam dwell states of the aforementioned micro cell 1. In these weak interference beam dwell states, the micro cell 1 can use the transmission spectrum of the synthesized beam with the macro cell A to carry out communication; the beam dwell state (1) and beam dwell state (3) of the macro cell A are the strong interference beam dwell states of the above-mentioned micro cell 1, and in these strong interference beam dwell states, the micro cell 1 can use the same The transmission spectrum of the synthesized beam of macro cell A is coordinated to improve the spectrum utilization efficiency of macro cell; the beam dwell state (2) and beam dwell state (4) of macro cell A are neither strong interference of micro cell 1 above The beam dwell state is not the weak interference beam dwell state of micro cell 1 mentioned above. In the beam dwell state (2) and beam dwell state (4) of macro cell A, micro cell 1 receives The interference is relatively strong, it is not suitable to share the frequency with the macro cell shaped beam by space division, but it is not strong enough, so it is also in the beam dwell state (2) and the beam dwell state (4) of the macro cell A , the micro cell 1 is not suitable for coordinated transmission with the transmission spectrum of the synthesized beam of the macro cell A.

Table 1 also shows the adjacent frequency/out-of-band interference relationship between micro cell 1 and the above-mentioned beam-dwelling sequence containing 7 beam-dwelling states. After the adjacent frequency/out-of-band interference relationship between the beam-dwelling sequences of the micro-cell 1 is in the beam-dwelling state (5)-(7) of the macro-cell A with weaker out-of-band interference, the smaller The guard band communicates with the micro cell terminal, and the guard band is a guard band between the spectrum of the uplink channel of the wireless access point of micro cell 1 and the spectrum of the downlink channel of macro cell A.

Table 2 is a table of the interference relationship between the shaped beams of the micro cell and the macro cell B according to Embodiment 1 of the present invention:

Table 2

As shown in Table 2, when the shaped beam of the adjacent macro cell B of the macro cell A where the micro cell 1 is located also interferes with the micro cell 1, the interference between the shaped beams of the micro cell 1 and the macro cell B is obtained relationship, in order to avoid the interference from the shaped beams of macro cell A and macro cell B at the same time, micro cell 1 uses the beam dwell sequence information of macro cell A and macro cell B, and the beam dwell sequence information of macro cell A and macro cell B When the weak in-band and/or out-of-band interference camping state of micro cell 1 occurs simultaneously in the beam camping sequence, micro cell 1 uses macro cell A and/or macro cell in the time interval corresponding to the above weak interference camping state B is the frequency spectrum within the transmit bandwidth of the sentencing beam.

Preferably, when the micro cell 1 in the macro cell A obtains the interference relationship between the shaped beams of the micro cell 1 and the macro cell B, the micro cell 1 in the macro cell A can obtain the macro cell B in one of the following ways 1) The interference relationship management unit controls the air interface of the macro cell A to send to the micro cell 1; 2) The interference relationship management unit transmits through the backhaul channel of the micro cell 1; The interface, such as the X2 interface in the LTE system, sends the shaped beam dwell status of macro cell B to the adjacent base station; 4) the shaped beam dwell status of macro cell B and the shaped beam dwell status of macro cell A Both are centralized control by the radio resource management unit on the network side or the base station, and the interference relationship management unit on the network side uses the shaped beam dwell state of the macro cell B that is centrally controlled by the radio resource management unit or the base station.

When constructing the above-mentioned interference relationship table, the method of determining the number of beam dwell states contained in the beam dwell state sequence of the penalty beam of the macro cell in the interference relation table is to discretely value the parameters that characterize the beam dwell state , according to the required numerical interval, the pitch angle and/or azimuth angle representing the direction of the beam dwell state are discretely taken, that is, in the interference relationship table, the parameters of adjacent beam dwell states maintain a specific step size . The interval between the pitch angles and/or the azimuth angles used by the beam points of two different or adjacent beam dwell states is greater than or equal to 1 degree. The discrete value method for the parameters representing the beam dwell state is used in all the parameters representing the beam dwell state, for example, the value interval of the power is greater than 100 dBm.

The microcell samples the radio frequency signal from the above-mentioned shaped beam outside the half-power beamwidth of the above-mentioned main transmitting beam, and the implementation method may be one of the following or a combination thereof:

1) Sampling is realized by the wireless access point of the micro cell;

2) Sampling is realized by the measurement unit deployed in the micro cell;

3) Sampling is implemented by a mobile terminal located in or near the micro cell.

When sampling is implemented by the micro cell wireless access point, the micro cell wireless access point performs in-band and/or out-of-band analysis from the above-mentioned shaped beam during the dwell time of the beam dwell state of the main transmit beam of the shaped beam. The radio frequency power is sampled; specifically, the wireless access point of the micro cell uses its uplink receiving channel to implement the above sampling; the specific processing of the sampled data can be performed at the wireless access point, or it can be the interference relationship on the network side within the management unit.

When the sampling is implemented by the measurement unit deployed in the micro cell, the receiving channel of the above measurement unit is not part of the uplink receiving channel of the wireless access point of the micro cell, and the receiving channel of the above measurement unit may be connected to the wireless access point of the micro cell Co-site or co-device deployment, or the receiving channel of the above measurement unit is deployed at a specific position within the coverage of the micro cell; The in-band and/or out-of-band radio frequency power of the shaped beam is sampled; specifically, the measurement unit uses its receiving channel to implement the above sampling; the specific processing of the sampled data can be performed at the measurement unit or in the network The interference relationship management unit on the side; a method to realize the measurement unit is that the RF receiving chip of the general mobile terminal is used for the receiving channel of the measurement unit; the microcell deployed by the measurement unit or the corresponding relationship between the measurement unit and the microcell is known or predetermined by the network side.

When sampling is implemented by a mobile terminal located in or near a micro cell, a method for determining the corresponding relationship between the micro cell and the mobile terminal is to estimate the terminal by measuring the transmitted signal of the micro cell by the mobile terminal The approximate distance from the microcell, one implementation method is: when the strength of the signal sent by the microcell measured by the above-mentioned mobile terminal exceeds the specified strength, then determine the above-mentioned terminal and the above-mentioned micro-interval as a corresponding relationship, this correspondence The relationship indicates that the measurement of the shaped beam of the macro cell by the terminal above can be used to characterize the interference relationship between the micro cell and the beam dwell state of the measured shaped beam.

Preferably, the beam dwell state of the above-mentioned main transmitting beam may include one or more of the following parameters describing the main beam: a parameter describing the direction of the main transmitting beam or a parameter describing the geographical space covered by the main transmitting beam; describing the parameters of the main transmitting beam Dwell time parameters in a specific direction or in a specific geographic space; beam width parameters of the main transmit beam; power parameters of the main transmit beam; transmit bandwidth of the main transmit beam and/or frequency parameters occupied by the transmit channel of the main transmit beam.

Preferably, in a macro cell using an array antenna, when there is more than one main transmit beam, the dwell state is jointly formed by the dwell parameters of each main transmit beam.

The implementation of the interference relationship management unit may be one or a combination of the following: implemented in the wireless access point of the micro cell; implemented in the access point of the macro cell; implemented in the radio resource management network element on the network side.

A specific example of obtaining the above interference relationship in an actual communication system is: before actually using the interference relationship between the micro cell and the macro cell shaped beam, the above interference relationship has been collected and/or stored on the network side, The specific method for collecting and/or storing the above-mentioned interference relationship on the network side is one of the following or a combination of both: according to the steps given in the above-mentioned interference relationship acquisition method, a time interval is set, and within the above-mentioned time interval, the establishment of The collection of data required by the above-mentioned interference relationship, for example, in the time interval when the network load is light, the main transmit beam of the shaped beam of the macro cell is controlled to transmit on a set of predetermined beam directions, corresponding to the residence time of the main transmit beam state, the micro cell performs the above sampling and stores the obtained interference relationship on the network side, for example, in the radio resource management network element, or in the interference relationship management unit; or, according to the above interference relationship acquisition method to In the above steps, in the process of transmitting service signals to the terminal by the main transmit beam of the shaped beam of the macro cell, the micro cell samples the shaped beam of the macro cell in the state of providing services, and stores the acquired interference relationship on the network side . One storage method is to update the existing interference relationship stored in the radio resource management network element or in the interference relationship management unit.

The implementation method of using the above interference relationship in an actual communication system can be one of the following: the interference relationship between the above micro cell and the above macro cell shaped beam is stored locally in the micro cell; or, the network side transmits The interference relationship between the micro cell and the macro cell shaped beam is sent to the micro cell; or, the network side transmits the interference relationship between the micro cell and the macro cell shaped beam through the wired or wireless backhaul channel of the micro cell or, the scheduler on the network side directly determines the frequency spectrum of the above-mentioned micro-cell in a specific beam dwell state according to the interference relationship between the above-mentioned micro-cell and the above-mentioned macro cell shaped beam stored on the network side The mode of use, and the scheduler assigns the frequency of the configuration channel to the micro cell wireless access point and/or the micro cell terminal, or the scheduler assigns the frequency and time of the configuration channel to the micro cell wireless access point and/or the micro cell terminal .

Preferably, in an actual system, the method of sending the beam dwell state or a beam dwell state sequence of the macro cell to the micro cell in the future period is: sending the beam dwell state of the macro cell in the future period through the broadcast channel of the macro cell Parking status or a beam camping status sequence, an example is that the macro cell uses its cell broadcast channel or system broadcast channel to send the above beam parking status or a beam camping status sequence to the micro cell of the cell; or, through The wired or wireless backhaul channel of the micro cell sends the beam dwell state or a sequence of beam dwell states of the macro cell in the future to the micro cell.

In the actual system, the beam dwell state of the shaped beam of the macro cell is random, and the beam pointing parameters included in the beam dwell state will change with the movement of the terminal. In this beam pointing change, there will be and interference relationship listed in the table The beam pointing parameters of the beam dwell state are not completely consistent, but there are errors. For example, in the beam pointing parameters of a set of beam dwell states listed in the interference relationship table, the pitch angle and / Or the interval on the azimuth angle is 1 degree, when the elevation and/or azimuth angle in the beam dwell state of the macro cell shaped beam given in the actual system falls within the above-mentioned 1 degree interval, the macro cell in the actual system The beam dwell state of the shaped beam of the cell does not exactly match the beam pointing parameters of the beam dwell state listed in the interference relation table. Similarly, when the beam pointing parameters of a group of beam dwell states listed in the interference relationship table also include transmit power parameters or beam width parameters, these transmit power parameters or beam width parameters will also be different from those of the actual system in operation. There is a mismatch between the corresponding parameters of the beam dwell states used. The discrepancy between the beam dwell state of the shaped beam in the macro cell in the actual system and the beam dwell state listed in the interference relationship table is solved by parameter matching. The specific method is to use the beam dwell state listed in the interference relationship table The matching error is set for the state parameters of the above-mentioned state parameters, which at least include one of the main transmit beam pointing parameter, the main transmit beam width parameter, the main transmit beam radiation power parameter or the main beam gain parameter. When the error between the parameters contained in the beam dwell state of the shaped beam of the macro cell in the actual system and the parameters contained in a certain beam dwell state listed in the interference relationship table is less than the matching error, the parameters listed in the interference relationship table The beam dwell state is used as the matching state of the beam dwell state of the shaped beam of the macro cell in the actual system, and the interference intensity received by the micro cell in this matching state is used as the beam dwell state of the shaped beam of the macro cell in the actual system The intensity of interference to the microcell. When the error between the parameters contained in the beam dwell state of the macrocell shaped beam in the actual system and the parameters contained in the two or more beam dwell states listed in the interference relationship table is less than the matching error, then the The beam dwelling state with the smallest matching error among the above two or more beam dwelling states is used as the matching state of the beam dwelling state of the shaped beam of the macro cell in the actual system.

Embodiment two

In this preferred embodiment, a communication method of space division multiplexing frequency in a small cell is provided. Using frequency spectrum, Fig. 4 is a flow chart of the communication method of micro cell space division multiplexing frequency according to Embodiment 2 of the present invention, as shown in Fig. 4, the method includes:

Step S402, obtain the beam dwell state sequence information of the main transmit beam of the shaped beam of the macro cell, and use the obtained interference relationship between the micro cell and the shaped beam of the macro cell to determine whether there is The weak interference beam camping state corresponding to the above-mentioned micro cell, if the above-mentioned weak interference beam camping state exists, the micro cell uses the frequency of the above-mentioned main transmission beam and the service frequency of the micro cell during the existence time of the above-mentioned weak interference beam camping state The terminal communicates; if there is no dwelling state of the weak interference beam, the micro cell gives up using the frequency of the main transmitting beam.

A preferred implementation may be as follows: the formed beam of the macro cell is a synthetic beam working on the FDD downlink frequency band, for example, it is an active antenna (active antenna) working on the frequency division duplex (Frequency Division Duplexing, referred to as FDD) frequency band. Antenna system, referred to as AAS), the micro cell is a micro cell that uses the above-mentioned FDD downlink frequency band in an opportunistic manner. Interference relationship with the shaped beam of the above-mentioned macro cell, judge whether there is a weak interference beam camp state corresponding to the above-mentioned micro cell in the beam camp state sequence of the above-mentioned AAS, if there is the above-mentioned weak interference beam camp state, the micro The cell communicates with the terminal served by the micro cell using the frequency of the main transmit beam during the existence time of the dwell state of the weak interference beam.

Embodiment three

In this preferred embodiment, a communication method for a micro cell to avoid adjacent frequency interference is provided. This method is based on the above-mentioned method for obtaining the interference relationship, and is suitable for adjacent frequency communication between a micro cell and a macro cell using a shaped beam. The spectrum is used in a manner that includes:

Obtain the beam dwell state sequence information of the main transmit beam of the shaped beam of the macro cell, and use the obtained interference relationship between the micro cell and the shaped beam of the macro cell to determine whether there is any difference between the above beam dwell state sequence and the above micro cell. The weak out-of-band interference beam dwell state corresponding to the area, if the above-mentioned weak out-of-band interference beam dwell state exists, the micro cell uses the frequency of the above-mentioned main transmit beam during the existence time of the above-mentioned weak out-of-band interference beam dwell state. The frequency with the first guard interval between them receives signals from the terminal served by the micro cell; if the above-mentioned weak out-of-band interference beam dwell state does not exist, the micro cell uses the frequency with the second guard interval between the frequency of the main transmit beam A signal is received from a terminal served by the micro cell; the frequency bandwidth of the first guard interval is smaller than the frequency bandwidth of the second guard interval.

A preferred implementation method is: the formed beam of the macro cell is a composite beam working on the FDD downlink frequency band, for example, it is a composite beam of an active antenna (AAS) working on the FDD frequency band, and the micro cell uses the above-mentioned FDD The downlink frequency band is adjacent to the time division duplex (Time Division Duplexing, referred to as TDD) spectrum micro-cell, according to the already obtained interference relationship between the micro-cell and the shaped beam of the above-mentioned macro cell, the TDD micro-cell determines the above-mentioned beam resident If there is a weak out-of-band interference beam dwell state or a weak out-of-band interference beam dwell state sequence corresponding to the above micro cell in the state sequence, then in the weak out-of-band interference beam dwell state or a weak out-of-band interference beam corresponding to the above micro cell In the interference beam dwell state sequence, the micro cell uses the first guard interval to configure the uplink channel for the micro cell terminal; and/or the TDD micro cell determines the obtained interference relationship between the micro cell and the macro cell shaped beam If there is a strong out-of-band interference beam dwell state or a strong out-of-band interference beam dwell state sequence corresponding to the micro cell in the above beam dwell state sequence, then in the strong out-of-band interference beam dwell state corresponding to the above micro cell or In a strong out-of-band interference beam dwell state sequence, the micro cell uses the second guard interval to configure an uplink channel for the micro cell terminal. Wherein, the bandwidth of the first guard interval is smaller than that of the second guard interval, and the first guard interval and the second guard interval are located between the FDD downlink spectrum and the spectrum used by the terminal uplink channel.

Embodiment Four

In this preferred embodiment, a method for a micro cell to assist a macro cell in forming a beam to transmit signals is provided. This method is based on the above-mentioned method for obtaining interference relations, and is applicable to the micro cell and the shaped beam of the macro cell covering the micro cell. Working at the same frequency, FIG. 5 is a flowchart of a method for a micro cell to assist a macro cell in transmitting signals with a shaped beam according to Embodiment 4 of the present invention. As shown in FIG. 5 , the method includes the following steps:

Step S502, obtain the beam dwell state sequence information of the main transmit beam of the shaped beam of the macro cell, and use the obtained interference relationship between the micro cell and the shaped beam of the macro cell to determine whether there is The camping state of the strong in-band interference beam corresponding to the above micro cell, if there is the above camping state of the strong in-band interference beam, and the terminal served by the shaped beam of the macro cell is within the coverage of the micro cell, the micro cell During the existence time of the above-mentioned strong in-band interference beam dwell state, the micro cell uses the frequency of the above-mentioned main transmit beam to transmit signals to the above-mentioned terminal; otherwise, the micro cell gives up using the above-mentioned The frequency of the main transmit beam.

Preferably, during the existence time of the above-mentioned strong in-band interference beam dwell state, the shaped beams of the micro cell and the macro cell can jointly transmit data to the above-mentioned terminal in a transmit diversity mode or in a MIMO mode. Further, according to the acquired micro The interference relationship between the formed beam of the cell and the above-mentioned macro cell, determine whether there is a weak in-band interference beam dwell state corresponding to the above-mentioned micro cell in the above-mentioned beam dwell state sequence, and the corresponding weak in-band interference beam resides In the state, the micro cell configures the traffic channel of the micro cell on the frequency spectrum used by the shaped beam of the above macro cell.

Preferably, the implementation method of determining that the terminal served by the shaped beam of the macro cell is located within the coverage of the micro cell may be: use the terminal to measure the signal strength of the micro cell to determine, or use the micro cell to receive the signal transmitted by the terminal Sure.

The implementation method of determining that the terminal is the terminal served by the macro cell during the existence time of the strong in-band interference beam dwell state may be: the macro cell determines according to the scheduling information of the terminal by the scheduler.

Embodiment five

In this preferred embodiment, a system for obtaining interference relationship is also provided, which is used to obtain the interference relationship between a micro cell and a macro cell using a shaped beam. FIG. 6 shows the interference relationship acquisition according to Embodiment 5 of the present invention The composition schematic diagram of the system, as shown in Figure 6, the system includes:

The macro cell shaped beam transmitting unit 611 is used for transmitting the shaped beam;

The macro cell shaped beam transmission control unit 613, configured to control the beam dwell state of the above shaped beam;

a micro cell measurement unit 605, configured to sample the radio frequency signal from the above-mentioned shaped beam;

The interference relationship management unit 602 determines the interference relationship between the micro cell and the sampled shaped beam according to the sampling result of the micro cell measurement unit.

Wherein, the macro cell shaped beam transmission control unit 613 controls the direction of the main transmission beam of the shaped beam transmitted by the macro cell shaped beam transmission unit 611 in the macro cell, so that the above-mentioned main transmission beam points to different places in different time intervals. Direction, the above-mentioned main transmit beam has a beam dwell state within one of the above-mentioned time intervals, and at least two of the above-mentioned beam dwell states constitute a beam dwell state sequence; corresponding to one of the above-mentioned beam dwell states, at least one of the above-mentioned The micro cell measurement unit 605 outside the half-power beamwidth of the main transmit beam samples the radio frequency signal from the above-mentioned shaped beam; the interference relationship management unit 602 determines the corresponding sampled beam dwell state according to the above-mentioned sampling result as The camping state of the weak interference beam of the micro cell 605 may be determined as the camping state of the strong interference beam of the micro cell 605 .

A preferred implementation of the above-mentioned macro cell shaped beam transmitting unit 611 is realized by multiple antenna units and corresponding radio frequency channels, for example, by actually deployed phased array antennas or active array antennas covering macro cells Included antenna unit and RF channel unit implementation.

The above-mentioned macro cell shaped beam transmission control unit 613 can be implemented in one of the following ways: 1) weighting the amplitude and/or phase of the transmitted signal sent to the array antenna unit in the radio frequency part; 2) performing weighting processing in the baseband processing unit Inner division weights the amplitude and/or phase of the transmitted signal to the array antenna elements.

The implementation of the micro cell measurement unit 605 may be one or a combination of the following:

1) Sampling is realized by the wireless access point in the micro cell;

2) Sampling is realized by the measurement unit deployed in the micro cell;

3) Sampling is implemented by a mobile terminal located in or near the micro cell.

When sampling is implemented by the micro cell wireless access point, the micro cell wireless access point performs in-band and/or out-of-band analysis from the above-mentioned shaped beam during the dwell time of the beam dwell state of the main transmit beam of the shaped beam. The radio frequency power is sampled; for example, the wireless access point of the micro cell uses its uplink receiving channel to implement the above sampling; the specific processing of the sampled data can be performed at the wireless access point, or it can be managed by the interference relationship on the network side in unit 602.

When the sampling is implemented by the measurement unit deployed in the micro cell, the receiving channel of the above measurement unit is not part of the uplink receiving channel of the wireless access point of the micro cell, and the receiving channel of the above measurement unit may be connected to the wireless access point of the micro cell Co-site or co-device deployment, or the receiving channel of the above measurement unit is deployed at a specific position within the coverage of the micro cell; The in-band and or out-of-band RF power of the shaped beam is sampled; for example, the measurement unit uses its receiving channel to implement the above sampling; the specific processing of the sampled data can be performed at the measurement unit or at the network side It is carried out in the interference relationship management unit 602; a method for realizing the measurement unit is that the RF receiving chip of the general mobile terminal is used for the receiving channel of the measurement unit; the microcell deployed by the measurement unit or the corresponding relationship between the measurement unit and the microcell is Known by the network side or predetermined.

When sampling is implemented by a mobile terminal located in or near a micro cell, a method for determining the corresponding relationship between the micro cell and the mobile terminal is to estimate the terminal by measuring the transmitted signal of the micro cell by the mobile terminal The approximate distance from the microcell, a specific method is: when the strength of the signal sent by the microcell measured by the above-mentioned mobile terminal exceeds a certain strength, then determine the above-mentioned terminal and the above-mentioned micro-interval as a corresponding relationship, this correspondence The relationship indicates that the measurement of the shaped beam of the macro cell by the terminal above can be used to characterize the interference relationship between the micro cell and the beam dwell state of the measured shaped beam.

In this embodiment, in addition to the micro cell measurement unit 605, the micro cell measurement unit 603, the micro cell measurement unit 604, and the micro cell measurement unit 606 also exist in the macro cell A. The terminal 607 is a terminal served by the formed beam of the macro cell, and the terminal 608 is a terminal served by the micro cell or a terminal located in the coverage area of the micro cell. The terminal 608 can also measure the radio frequency power from the formed beam.

The implementation of the above-mentioned interference relationship management unit 602 may be one or a combination of the following:

Implemented in the micro cell wireless access point 614, for example, processing the sampling data of the in-band and/or out-of-band RF power from the above-mentioned shaped beams in the micro cell access point 614 and/or storing interference relationship data in the micro cell ;

Implemented in the wireless access point of the macro cell, for example, the access point of the micro cell sends the sampling data of the in-band and/or out-of-band radio frequency power of the above-mentioned shaped beam to the base station of the macro cell; The sampling data of the in-band and/or out-of-band radio frequency power of the above-mentioned shaped beam is processed and then sent to the macro cell base station, and the above-mentioned interference relationship data is acquired and/or stored in the macro cell base station;

Implemented in the radio resource management network element on the network side, for example, the micro cell access point sends the sampling data of the in-band and/or out-of-band radio frequency power of the above-mentioned shaped beam to the radio resource management network element on the network side; or The micro cell access point will process the sampling data of the in-band and/or out-of-band radio frequency power of the above-mentioned shaped beam and send it to the radio resource management network element on the network side, and obtain and /or store the above interference relationship data. A specific form of the radio resource management network element on the network side is a joint radio resource management unit that coordinates the spectrum of the macro cell and the micro cell.

After the above-mentioned system for obtaining the interference relationship obtains the above-mentioned interference relationship data, it can also send the main transmit beam dwell state sequence information of the shaped beam transmitting unit of the macro cell to the micro cell in the macro cell, and the transmission method can be one of the following :

The base station of the macro cell uses the antenna unit that generates the shaped beam of the macro cell to send the dwell state sequence information of the main transmit beam to the micro cell;

The base station of the macro cell sends the dwell state sequence information of the main transmit beam to the micro cell using a frequency different from the transmit frequency of the shaped beam of the macro cell;

The interference relationship management unit at the network side sends the main transmit beam dwell state sequence information to the micro cell through a wired or wireless backhaul (backhaul) channel of the micro cell.

The dwelling state of the above-mentioned main transmitting beam includes one or more of the following parameters describing the main beam: the parameter describing the direction of the main transmitting beam or the parameter describing the geographical space covered by the main transmitting beam; Dwell time parameters on a specific geographic space; beamwidth parameters of the main transmit beam; power parameters of the main transmit beam; transmit bandwidth of the main transmit beam and/or frequency parameters occupied by the transmit channel of the main transmit beam.

When the shaped beam of the adjacent macro cell B of the macro cell A where the micro cell wireless node 614 is located also interferes with the micro cell wireless node 614, the interference between the micro cell wireless node 614 and the shaped beam of the macro cell B is obtained relationship, see Table 2. In order to avoid the interference generated by the shaped beams from macro cell A and macro cell B at the same time, the micro cell wireless node 614 uses the beam camping sequence information of macro cell A and macro cell B to camp on the beam of macro cell A When the weak in-band and/or out-of-band interference camping state of the micro cell wireless node 614 occurs in the beam dwell sequence and the beam dwell sequence of the macro cell B at the same time, the time interval corresponding to the weak interference camping state of the micro cell wireless node 614 Spectrum within the transmit bandwidth of the shaped beams of macro cell A and/or macro cell B is used.

The adjacent macro cell B includes a macro cell shaped beam transmitting unit 612 , the macro cell shaped beam transmitting unit 612 transmits a beam 609 , and the terminal 610 is a terminal served by the beam 609 .

In another embodiment, software is also provided, and the software is used to implement the technical solutions described in the above embodiments and preferred embodiments.

In another embodiment, there is also provided a storage medium in which the above software is stored, and the storage medium includes but not limited to an optical disk, a floppy disk, a hard disk, a rewritable memory, and the like.

Obviously, those skilled in the art should understand that each module or each step of the above-mentioned present invention can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed in a network formed by multiple computing devices Alternatively, they may be implemented in program code executable by a computing device so that they may be stored in a storage device to be executed by a computing device, and in some cases in an order different from that shown here The steps shown or described are carried out, or they are separately fabricated into individual integrated circuit modules, or multiple modules or steps among them are fabricated into a single integrated circuit module for implementation. As such, the present invention is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (19)

1. A method for obtaining an interference relationship, comprising: Controlling the pointing of the main transmit beam of the shaped beam of the macro cell so that it points to different directions in different time intervals, wherein the main transmit beam is in a beam dwell state in one of the time intervals, and the beam dwell The state is divided according to one or more parameters describing the main transmit beam; corresponding to the beam dwell state, there is at least one first microcell located outside the half-power beamwidth of the main transmit beam, the first microcell samples radio frequency signals from the shaped beam, Wherein, the macro cell covers the first micro cell, or the macro cell is adjacent to a macro cell covering the first micro cell; Determine the interference relationship between the shaped beam and the first micro interval in the sampled beam dwell state according to the sampling value of the first micro cell. 2. The method according to claim 1, wherein determining the interference relationship between the shaped beam and the first micro-interval in the sampled beam dwell state according to the sampled value comprises: If the received power or received signal strength obtained according to the sampling value is greater than a preset first interference threshold, determining the corresponding sampled beam dwell state as the strong interference beam dwell state of the first micro cell; or , If the received power or received signal strength obtained according to the sampling value is smaller than the preset second interference threshold, the corresponding sampled beam dwell state is determined as the weak interference beam dwell state of the first micro cell. 3. The method according to claim 2, wherein determining the interference relationship between the shaped beam and the first small interval in the sampled beam dwell state according to the sampled value further comprises: Two or more weak interference beam dwell states of the first micro cell constitute a sequence of weak interference beam dwell states of the first micro cell; and/or, Two or more camping states of strong interference beams of the first micro cell constitute a sequence of camping states of strong interference beams of the first micro cell. 4. The method according to claim 2, wherein determining the interference relationship between the shaped beam and the first micro-interval in the sampled beam dwell state according to the sampled value further comprises: When a beam dwell state is the weak interference beam dwell state of two or more first micro cells, the two or more first micro cells constitute weak groups of interfering cells; and/or, When a beam dwell state is a strong interference beam dwell state of two or more first micro cells, the two or more first micro cells constitute the strong interference beam in this beam dwell state. interfering cell group. 5. The method according to claim 2, wherein the method of determining the interference relationship between the shaped beam and the first small interval in the sampled beam dwell state according to the sampled value is further include: The method of sampling the radio frequency signal from the shaped beam in the first micro cell is to sample the radiation within the operating frequency band of the shaped beam, and the sampling result is greater than the preset first interference threshold In the case of , determine that the interference relationship between the shaped beam and the first micro cell is a strong in-band interference beam dwell state; or, The method of sampling the radio frequency signal from the shaped beam in the first micro cell is to sample the radiation within the operating frequency band of the shaped beam, and the sampling result is smaller than the preset second interference threshold In the case of , determine that the interference relationship between the shaped beam and the first micro cell is a weak in-band interference beam dwell state; or, The method of sampling the radio frequency signal from the shaped beam in the first micro cell is to sample the out-of-band radiation of the shaped beam, and the sampling result is greater than the preset first interference threshold In the case of , determine that the interference relationship between the shaped beam and the first micro cell is a strong out-of-band interference beam dwell state; or, The method of sampling the radio frequency signal from the shaped beam in the first micro cell is to sample the out-of-band radiation of the shaped beam, and the sampling result is smaller than the preset second interference threshold In the case of , it is determined that the interference relationship between the shaped beam and the first micro cell is a weak out-of-band interference beam dwell state. 6. The method according to claim 2, characterized in that, in the case that frequency spectrum is used between the first micro cell and the macro cell using shaped beams in a manner of spatial division multiplexing frequency, the Methods also include: Acquiring information about a beam-dwelling state sequence of a main transmit beam of the shaped beam of the macro cell, wherein at least two of the beam-dwelling states constitute the beam-dwelling state sequence; judging whether the weak interference beam dwell state of the first micro cell exists in the beam dwell state sequence, and if yes, the first micro cell uses all The frequency of the main transmission beam is used to communicate with the terminal served by the first micro cell; if not, the first micro cell gives up using the frequency of the main transmission beam. 7. The method according to claim 5, characterized in that, in the case that the frequency spectrum is used in the manner of adjacent frequencies between the first micro cell and the macro cell using the shaped beam, the method further include: Acquiring information about a beam-dwelling state sequence of a main transmit beam of the shaped beam of the macro cell, wherein at least two of the beam-dwelling states constitute the beam-dwelling state sequence; judging whether the weak out-of-band interference beam camping state of the first micro cell exists in the beam camping state sequence, and if so, the existence of the weak out-of-band interference beam camping state of the first micro cell receiving a signal from a terminal served by the first micro cell using a frequency with a first guard interval between the frequency of the main transmit beam and the frequency within a time; If not, the first microcell receives a signal from a terminal served by the first microcell using a frequency with a second guard interval between the frequency of the main transmit beam, wherein the first guard interval The frequency bandwidth is smaller than the frequency bandwidth of the second guard interval. 8. The method according to any one of claims 1 to 7, wherein the parameters describing the main transmit beam include at least one of the following: describing the parameters of the main transmit beam pointing; describing the main transmit beam The parameters of the geographical space covered by the transmitting beam; the residence time describing the main transmitting beam in a specific direction or specific geographical space; the beam width of the main transmitting beam; the power parameter of the main transmitting beam; The transmit bandwidth of the transmit beam; the frequency occupied by the transmit channel of the main transmit beam. 9. The method according to any one of claims 1 to 7, characterized in that, when there are multiple main beams in the macro cell, the beam dwell state is defined by the beam dwell state of each main beam. stay state together. 10. The method according to any one of claims 1 to 7, wherein the manner in which the first micro cell samples the radio frequency signal from the shaped beam includes at least one of the following: Sampling is implemented by the first micro cell wireless access point; Sampling is implemented by a measurement unit deployed in the first micro cell; Sampling is performed by a terminal located in the small cell or by a terminal whose distance from the first small cell is smaller than a preset threshold. 11. The method according to any one of claims 1 to 7, further comprising: For each of the beam-dwelling states, there is also at least one second microcell located within the half-power beamwidth of the main transmit beam to sample the radio frequency signal from the shaped beam, wherein the macro The cell covers the second micro cell, or the macro cell is adjacent to a macro cell covering the second micro cell; Determine the interference relationship between the shaped beam and the second micro cell in the sampled beam dwell state according to the sampling value of the second micro cell. 12. The method according to claim 11, wherein determining the interference relationship between the shaped beam and the second micro cell in the sampled beam dwell state according to the sampled value comprises: If the received power or received signal strength obtained according to the sampling value is greater than a preset first interference threshold, determining the corresponding sampled beam dwell state as the strong interference beam dwell state of the second micro cell; or , If the received power or received signal strength obtained according to the sampling value is less than the preset second interference threshold, the corresponding sampled beam dwell state is determined as the weak interference beam dwell state of the second micro cell. 13. The method according to claim 12, characterized in that, in the case that the second micro cell and the shaped beam of the macro cell covering the second micro cell work at the same frequency, the method further include: Acquiring information on the beam dwell state sequence of the main transmit beam of the shaped beam of the macro cell, wherein the sampling method of the radio frequency signal from the shaped beam in the second micro cell is the working of the shaped beam In-band radiation is sampled, and when the sampling result is greater than the preset first interference threshold, it is determined that the interference relationship between the shaped beam and the second micro cell is a strong in-band interference beam dwell state , at least two of the beam dwell states constitute the beam dwell state sequence; judging whether there is a strong in-band interference beam camping state of the second micro cell in the beam camping state sequence, and if yes, the terminal served by the shaped beam of the macro cell covering the second micro cell is located at Within the coverage of the micro cell, the second micro cell transmits a signal to the terminal using the frequency of the main transmit beam during the existence time of the strong in-band interference beam dwell state; if not, Then the second micro cell gives up using the frequency of the main transmit beam during the existence time of the strong in-band interference beam dwell state. 14. The method according to claim 13, wherein the second micro cell uses the frequency of the main transmit beam to transmit signals to the terminal during the existence time of the strong in-band interference beam dwell state include: During the existence time of the strong in-band interference beam dwell state, the second micro cell shares a transmit diversity mode or a multiple-input multiple-output (MIMO) mode with a shaped beam of a macro cell covering the second micro cell. A signal is transmitted to the terminal. 15. The method according to claim 14, wherein the manner in which the second micro cell samples the radio frequency signal from the shaped beam comprises at least one of the following: performing sampling by a wireless access point of the second micro cell; performing sampling by a measurement unit set in the second micro cell; Sampling is performed by a terminal within the second microcell or a terminal whose distance from the second microcell is smaller than a preset threshold. 16. A system for obtaining an interference relationship, comprising: The macro cell shaped beam transmitting unit is located in the macro cell and is used to transmit the shaped beam; The macro cell shaped beam transmission control unit is connected to the macro cell shaped beam transmission unit, and is used to control the direction of the main transmission beam of the macro cell shaped beam so that it points to different directions in different time intervals, wherein the The main transmit beam is in a beam dwell state within one of the time intervals, and the beam dwell state is divided according to one or more parameters describing the main transmit beam; The micro cell measurement unit is located in the micro cell or the distance from the micro cell is less than a preset threshold, and is used to sample the radio frequency signal from the shaped beam, wherein the macro cell covers the micro cell, or the The macro cell is adjacent to a macro cell covering the micro cell; An interference relationship management unit, configured to determine the interference relationship between the shaped beam and the micro interval in the sampled beam dwell state according to the sampling value of the micro cell measurement unit. 17. The system according to claim 16, wherein the interference relationship management unit is configured to: If the sampling value or the power or signal strength calculated using the sampling value is greater than a preset first interference threshold, determine that the interference relationship between the shaped beam and the first micro cell is a strong interference beam dwell state or, when the sampling value or the power or signal strength calculated using the sampling value is less than a preset second interference threshold, determine that the interference relationship between the shaped beam and the first micro cell is weak Interference beam dwell status. 18. The system according to claim 16, wherein the interference relationship management unit is implemented in at least one of the following ways: Realized in the micro cell wireless access point; Implemented in the macro cell access point; It is implemented in the radio resource management network element on the network side. 19. The system according to claim 16, wherein the micro cell measurement unit is implemented in at least one of the following ways: Sampling is realized by the wireless access point in the micro cell; Sampling is realized by the measurement unit deployed in the micro cell; Sampling is implemented by mobile terminals located within the microcell or whose distance from the first microcell is smaller than a preset threshold.