CN102378190B

CN102378190B - Microcell WAP (wireless access point) and channel arrangement method, dynamic spectrum resource management system

Info

Publication number: CN102378190B
Application number: CN201010255855.0A
Authority: CN
Inventors: 刁心玺; 杨光; 许玲; 赖峥嵘; 朱晓冬
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2010-08-13
Filing date: 2010-08-13
Publication date: 2015-08-12
Anticipated expiration: 2030-08-13
Also published as: CN102378190A

Abstract

The invention discloses a kind of Microcell WAP (wireless access point) channel arrangement method, dynamic spectrum resource management system, method comprises: the frequency spectrum that Microcell WAP (wireless access point) reports it current to network side uses ability; Network side is Microcell WAP (wireless access point) assignment spectrum measurement project and measures auxiliary parameter; Microcell WAP (wireless access point) is to network side reporting measurement data; The measurement result that network side reports according to Microcell WAP (wireless access point), determine the shared frequency band between other Microcell WAP (wireless access point) in Microcell WAP (wireless access point) and its interference group, and determine the running time-frequency resource that resident channel uses for Microcell WAP (wireless access point); The channel configuration information that Microcell WAP (wireless access point) sends according to network side, carries out channel configuration and interference group detection beacon configures.The invention also discloses the Microcell WAP (wireless access point) with interference relationships measuring unit and radio environment measurements unit and dynamic spectrum resource management system that realize said method.Invention increases flexibility and the frequency spectrum service efficiency of channel configuration.

Description

Micro-cell wireless access point, channel configuration method thereof and spectrum resource management system

Technical Field

The invention relates to a resource allocation technology of a micro-cell wireless access point, in particular to a micro-cell wireless access point, a channel allocation method thereof and a spectrum resource management system.

Background

Using spectrum resources in an orthogonal manner between adjacent or nearby wireless access points is a basic method to avoid interference between wireless access points. With the introduction of wireless access points for microcell coverage, the interference pattern of the wireless access network becomes more complex, and the following basic interference categories exist among wireless access points operating in the same geographic area: interference between macro cells, interference between micro cells, interference between macro cells and micro cells. For a stable operation of the radio access network, these interferences have to be controlled within a tolerable range. Due to the fact that the deployment positions of the microcell wireless access points are random, interference patterns among the microcell wireless access points are unpredictable, the frequency planning of a traditional cellular network cannot be adopted for the deployment of the microcell wireless access points, and the microcell wireless access points must be deployed and have the capability of adaptively configuring operating frequency spectrums and operating parameters according to the wireless environment. A microcell coverage device which has wireless environment adaptive capacity, is convenient to deploy and low in cost is designed, and relates to wireless environment cognition and network reconfiguration technologies, wherein the prior art is as follows.

The patent publication number is US20100105332a1, the publication date is 29/4/2010, and the patent application name is "Method and System for Dynamic Spectrum Access Using detection methods and systems" discloses a basic technical scheme as follows: detecting the Spectrum use condition in an area by a device with Dynamic Spectrum Access (DSA) capability, and selecting one or more communication channels for use according to the detection result; further, the device with dynamic spectrum access capability detects other devices with dynamic spectrum access capability, and forms a network with dynamic spectrum access capability together with the detected devices with dynamic spectrum access capability. Networks with dynamic spectrum access capability utilize cooperative and uncooperative devices to probe spectrum usage to dynamically select one or more channels for communication while avoiding or reducing interference to other devices. The patent application gives more specific methods: a set of dynamic spectrum access capable devices, wherein each device is configured to not transmit for a first time interval during which the set of dynamic spectrum access capable devices remain synchronized, at least one dynamic spectrum access capable device of the set of dynamic spectrum access capable devices having a probe module that probes spectrum usage by devices outside the set of dynamic spectrum access capable devices for the first time interval. And detecting spectrum usage of one cooperating device in a second time interval, the second time interval not overlapping the first time interval. The device other than the set of devices with dynamic spectrum access capability is a non-cooperating device. The detector module includes a set of detectors. A scheduling circuit is arranged in the dynamic spectrum access capacity and used for scheduling the interval of a first time interval; at least one device repeatedly detects during a second time interval. The scheduling circuit includes a scheduler for scheduling a first time interval for at least one device. The one scheduling circuit is either as an integral part of one apparatus or as a separate apparatus.

The system for suppressing interference between wireless access points in the basic technical solution disclosed in patent publication No. US20070178939a1, published as 8/2/2007 under the name of "Method for reducing radio interference between wireless access points" includes: a Network Management System (NMS) having a controller for managing a plurality of wireless access points, such as access points complying with the IEEE802.11 a-g specifications, over a communications Network. The controller configures an operating mode for each wireless access point and reconfigures the operating modes of portions of the wireless access points to reduce interference among the wireless access points.

The technical solutions disclosed in the above patent application documents have the following common disadvantages:

the disadvantages of the spectrum detection method mainly lie in two aspects: (1) no priori knowledge is used to determine the detection range, which increases unnecessary detection time and implementation complexity; (2) individual implementation steps are not necessary, for example, division of the first and second time intervals is not necessary, and the first and second time intervals may be combined into one; (3) no method of sharing spectrum between microcells is given.

Communication of the drawbacks of the solution disclosed in patent application publication US20070178939a 1.

A system for managing spectrum resources of a micro-cell wireless access point comprises a micro-cell wireless access point resource management unit and at least one micro-cell wireless access point; the wireless resource management unit comprises an interference relation measurement management unit and a wireless environment measurement management unit;

the interference relation measurement management unit manages the micro cell wireless access point as follows:

allocating frequency and time intervals for channels of interference relation measurement signals transmitted by the micro-cell wireless access points;

assigning a detection set for the micro-cell wireless access point, wherein the detection set comprises indication information of interference relation measurement signals transmitted by a group of potential adjacent wireless access points;

the interference relation measurement management unit further processes the measurement result reported by the interference relation measurement signal receiving unit for the micro cell wireless access point to obtain the interference relation of the micro cell wireless access point.

The invention achieves the following two effects: 1) according to the method for allocating the resources of the micro-cell wireless access points, the problem of dynamic allocation of the resources among the micro-cell wireless access points under the condition of intensive deployment is solved by identifying resident channel resources and shared channel resources; 2) the micro cell wireless access point is configured on the frequency band used by the system to which the macro cell access point belongs by the channel of the interference relation measurement signal transmitting unit 306, and the interference relation measurement signal transmitting unit 306 adopts a channel different from the wireless technical specification used by the macro cell wireless access point, so that all micro cell wireless access points in the macro cell can transmit the interference relation measurement signal by adopting the same frequency. The interference relation measurement of the microcell wireless access point in the GSM system is simplified, and the existing GSM technical specification is not influenced.

Drawings

Fig. 1 is a flowchart of a method for configuring resources of a micro cell wireless access point according to the present invention;

fig. 2 is a schematic diagram of determining an available spectrum of a microcell wireless access point to be configured according to spectrum usage of a potential interference node;

fig. 3 is a schematic diagram of the composition structure of the microcell wireless access point according to the present invention;

fig. 4 is a schematic structural diagram of a communication system with a microcell wireless access point resource allocation management unit according to the present invention;

fig. 5 is an illustration of resources allocated to a microcell wireless access point on a frequency band used by a macrocell cellular system: only a method of avoiding interference between wireless access points using the same carrier is given, but a method of sharing a carrier between adjacent wireless access points in an interference relationship is not given.

Disclosure of Invention

In view of the above, the present invention provides a method and an apparatus for self-configuring an operating frequency band of a wireless access point, and a method and a system for coordinating spectrum resources among wireless access points, which can implement frequency band detection among wireless access points and automatic configuration of an operating frequency band.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a channel configuration method for a micro-cell wireless access point is suitable for determining time-frequency resources for a resident channel of the micro-cell wireless access point and determining a shared spectrum between more than two micro-cell wireless access points; the method comprises the following steps:

the micro cell wireless access point reports the current spectrum use capability to the network side;

the network side assigns a frequency spectrum measurement project and a measurement auxiliary parameter to the micro cell wireless access point;

the microcell wireless access point reports the measurement data to the network side;

the network side determines a shared frequency band between the micro-cell wireless access point and other micro-cell wireless access points in an interference group of the micro-cell wireless access point according to the measurement data reported by the micro-cell wireless access point, and determines a time-frequency resource used by a resident channel for the micro-cell wireless access point;

and the micro-cell wireless access point performs channel configuration and beacon configuration for interference group detection according to the channel configuration information sent by the network side.

A micro-cell wireless access point comprises a communication unit, an interference relation and wireless environment measuring unit and an interface unit; wherein,

a communication unit for providing a communication service to the terminal in the microcell over an available frequency band obtained by using the interference relationship and the measurement of the wireless environment measurement unit using the technical specification of the wireless access point;

the interference relation and wireless environment measuring unit is used for measuring the signal strength and the access point identification number of one or more micro-cell wireless access points which have potential interference relation with the micro-cell wireless access points, and is used for measuring the spectrum resources available for the first wireless access point;

an interface unit for a microcell wireless access point to intend with another wireless communication device or with a wired network;

fig. 6 is a schematic diagram of channel resources allocated to densely-deployed microcell wireless access points on a frequency spectrum used by a GSM system;

fig. 7 is a schematic diagram of channel resources allocated to densely deployed microcell wireless access points on a frequency spectrum used by an LTE system;

fig. 8 is a schematic diagram of GSM frequency reuse.

Detailed Description

The basic idea of the invention is that a wireless access point has the function of detecting the use of frequency bands of neighboring wireless access points. Specifically, 1) spectrum probing overhead of the wireless access point is reduced by using the prior information. The realization method comprises the following steps: introducing a micro-cell wireless resource management and control unit at a network side, wherein the micro-cell wireless resource configuration management and control unit determines a detection range of a frequency spectrum according to the frequency spectrum using capacity of a wireless access point and the frequency spectrum which can be used by an operator so as to reduce unnecessary detection time overhead; 2) and determining time-frequency resources used by a resident channel of the micro-cell wireless access point and time-frequency resources shared between adjacent micro-cells according to the detection result of the wireless access point. The realization method comprises the following steps: a micro-cell time micro-cell wireless resource allocation management and control unit determines time-frequency resources of a resident channel of a specific wireless access point and the sharing between the specific wireless access point and adjacent wireless access points thereof according to the measurement results of the specific wireless access point and/or the adjacent wireless access points of the specific wireless access point on a designated frequency spectrum; .

The method for allocating the resources of the micro-cell wireless access points is suitable for determining time-frequency resources for resident channels of the micro-cell wireless access points and determining shared frequency spectrums between two or more micro-cell wireless access points, and realizes dynamic allocation of the resources between the adjacent micro-cells by allocating the shared frequency spectrums of a group of micro-cell wireless access points among a group of adjacent micro-cell access points according to different proportions. As shown in fig. 1, the method for configuring resources of a micro cell wireless access point of the present invention includes the following steps:

step S101, the micro cell wireless access point reports the current spectrum using capacity to the network side.

The current spectrum usage capability of the micro cell wireless access point 300 is characterized by one or more of the following parameters: 1) the frequency bands currently available to microcell wireless access points and the wireless technology specifications supported on the frequency bands. For example, UMTS is supported on the first frequency band B1, ieee802.16a-g is supported on the second frequency band B2, GSM is supported on the third frequency band, and LTE FDD is supported on the fourth frequency band;

2) the parameters of the radio frequency channel currently owned by the micro-cell wireless access point comprise the configurable bandwidth category number of the radio frequency channel owned by the micro-cell wireless access point and the adjustable range of the central frequency point of the radio frequency channel;

3) the micro cell wireless access point baseband processing unit can support the wireless communication technical specification supported simultaneously. For example, the base band processing of GSM, WCDMA, LTE and IEEE802.16a-g can be simultaneously supported;

the micro cell wireless access point 300 informs the network side of its own spectrum use capability by reporting the one or more parameters to the network side.

The specific reporting mode of the microcell wireless access point reporting the current spectrum use capability to the network side is one of the following modes: 1) the microcell wireless access point reports to a microcell wireless access point resource allocation management and control unit at a network side through a wired network accessed by the microcell wireless access point; 2) the microcell wireless access point reports to the microcell wireless access point resource management unit 400 at the network side through the air interface facing the wireless access network of the wireless communication device connected with the microcell wireless access point;

the current spectrum utilization capability of the micro-cell wireless access point refers to the latest spectrum utilization capability of the wireless access point after the wireless access point is upgraded or reconfigured once, and the latest spectrum utilization capability of the wireless access point includes the change of a coverage band after the capability of a radio frequency channel unit is expanded. The micro-cell wireless access point reports the latest change of the spectrum use capability to the network side in time after the spectrum use capability is changed.

Step S102, the network side assigns a spectrum measurement item and a measurement auxiliary parameter for the micro cell wireless access point.

The measurement items include: 1) interference relationship measurements between microcell wireless access points. I.e., measurements of those microcell wireless access points, here denoted as wireless access points 2-n, that are deployed in a geographic or spatial region adjacent to the microcell wireless access points and potentially interfere with the microcell wireless access points. The potential interference to the microcell wireless access point is as follows: when any one of the wireless access points 2 to n simultaneously transmits or receives signals using the same frequency as the microcell wireless access point, the communication channel of one of the two microcell wireless access points may interfere with the communication channel of the other. Interference relationship measurements between picocell wireless access points are made according to parameters specified by a picocell interference relationship probe set, i.e., measurements are made on a specified set of measured signals on a specified channel. The micro cell wireless access point and the wireless access points 2-n with interference relation with the micro cell wireless access point form an interference group, which is called as the interference group of the micro cell wireless access point in the invention; 2) interference relationship measurements between the microcell radio access point and the macrocell radio access point. I.e., the measurement by the picocell wireless access point of the macrocell signal power and or signal species present at its geographic or spatial location of deployment. 3) Background interference power measurements on candidate operating bands of the microcell wireless access point. The candidate operating band of the micro cell wireless access point refers to a band in which the micro cell wireless access point is allowed to use in a specific area, but there may be interference power generated by communication channels of other wireless access points. Only frequency bands with background interference power less than a predetermined threshold can be used by the microcell wireless access point.

The auxiliary measurement parameters comprise the following parameters according to different measurement items: 1) auxiliary parameters for interference relationship measurement between microcell wireless access points. The method comprises the following steps: a) microcell interference relationship sounding set: specifically, ID numbers of a set of measured microcell wireless access points; b) the measured micro cell wireless access point transmits an ID number, a time frequency window of a beacon and a signal form of the beacon;

2) and auxiliary parameters for interference relationship measurement between the micro-cell wireless access point and the macro-cell wireless access point. The method comprises the following steps: a) macro cell and micro cell interference relation detection set: specifically, the ID number of a group of macro cell wireless access points to be tested; b) the wireless access point of the macro cell to be tested transmits an ID number, a time-frequency window of a beacon and a signal form of the beacon;

3) auxiliary parameters for background interference power measurements on candidate operating frequency bands of the microcell wireless access point. The method comprises the following steps: a) the bandwidth range of the micro cell candidate frequency band; b) and measuring a reporting threshold.

And step S103, the micro cell wireless access point reports the measurement data to the network side.

And the micro-cell wireless access point sends the measurement data to a micro-cell wireless access point resource management unit at the network side.

The transmitted measurement results include the following parameters: 1) and measuring data obtained by interference relation measuring items among the micro-cell wireless access points. The method comprises the following steps: the ID number of the wireless node of the measured micro-cell with the signal power strength exceeding a preset threshold; 2) and measuring data obtained by interference relation measuring items between the micro cell wireless access point and the macro cell wireless access point. The method comprises the following steps: the ID number of the wireless node of the measured macro cell with the signal power strength exceeding a preset threshold; 3) and data obtained by the background interference power measurement item on the candidate working frequency band of the micro-cell wireless access point. The method comprises the following steps: the frequency band position and the bandwidth of the signal or interference power strength exceeding a preset threshold;

and step S104, the network side determines the shared frequency band between the micro-cell wireless access point and other micro-cell wireless access points in the interference group according to the measurement result reported by the micro-cell wireless access point, and determines the time-frequency resource used by the resident channel for the micro-cell wireless access point.

The camping channel is one of the following channels of the wireless access point: 1) control channels necessary for establishing a cell; 2) a control channel and at least one traffic channel that are necessary in order to establish a cell.

The specific implementation steps for determining the shared frequency band between the microcell wireless access point and other microcell wireless access points in the interference group are as follows:

in the sub-step P104a, the microcell wireless access point resource management unit on the network side determines an interference group of the microcell wireless access point according to the adjacent cell ID information that the interference strength reported by the microcell wireless access point exceeds a predetermined threshold one;

in sub-step P104b, the femtocell wireless access point resource management unit at the network side determines, according to the interference power measurement result on the idle time interval of the frequency band where the camping channel of other femtocell wireless access points in the interference group of the femtocell wireless access point reported by the femtocell wireless access point, the frequency band where the camping channel of the wireless node in the interference group with the interference intensity lower than the second predetermined threshold is located as the shared frequency band of the femtocell wireless access point and the femtocell wireless node in the interference group thereof;

in sub-step P104c, when there is no frequency resource used for the femtocell wireless access point on the candidate operating frequency band, the femtocell wireless access point resource management unit on the network side selects a shared frequency band between the femtocell wireless access point and the femtocell wireless node in its interference group as the time-frequency resource configuring the camping channel of the femtocell wireless access point.

The time-frequency resource in this step is one of the following resources: 1) a time interval on one carrier or one radio frame on a particular carrier; 2) a time-frequency resource block carried by one OFDM carrier;

the determining of the time-frequency resource of the resident channel for the micro-cell wireless access point is specifically realized in one of the following two ways:

a first way to determine time-frequency resources of a camping channel: and configuring time-frequency resources of a resident channel for the micro-cell wireless access point under the condition that the frequency resources which are separately used for the micro-cell wireless access point do not exist on the candidate working frequency band of the micro-cell wireless access point.

And the network side takes the shared frequency band of the micro-cell wireless access point and a certain micro-cell wireless node in the interference group as a time-frequency resource for configuring a resident channel of the micro-cell wireless access point. That is, on a carrier configured with a resident channel at a micro-cell wireless access point, in a first time interval of a wireless frame, the micro-cell wireless access point uses the carrier to establish a channel, and the micro-cell wireless access point using the carrier to establish the resident channel in an interference group of the micro-cell wireless access point does not use a time-frequency resource of the carrier; in a second time interval of the wireless frame, the micro-cell wireless access point does not use the time-frequency resource of the carrier, and one other micro-cell wireless access point in the interference group of the micro-cell wireless access point uses the time-frequency resource of the carrier;

a second way of determining the time-frequency resources of the camping channel: and configuring time-frequency resources of a resident channel and an extended service channel for the micro-cell wireless access point under the condition that the frequency resources which are independently used for the micro-cell wireless access point exist on the candidate working frequency band of the micro-cell wireless access point.

The network side selects a sub-band SB1 which is not used by a resident channel of another microcell wireless node in an interference group of the microcell wireless access point from a group of sub-bands G1(SB1, SB 2.. SBn) which can be used by the microcell wireless access point, and arranges the resident channel of the microcell wireless access point on the sub-band SB1, and further, the network side selects a sub-band SBj which is used by a resident channel of another microcell wireless node in the interference group of the microcell wireless access point from a group of sub-bands G1(SB1, SB 2.. SBn) which can be used by the microcell wireless access point, and arranges an extension of the microcell wireless access point on the sub-band SBj, so that the extension channel of the microcell wireless access point and the resident channel of another microcell wireless access point in the interference group of the microcell wireless access point share the same sub-band SBj. The extension channel of the microcell wireless access point is a channel added to the microcell wireless access point on the basis of the camping channel, and the extension channel may be a traffic channel or a control channel.

And the network side establishes a resident channel resource configuration table for the time-frequency resources used by the resident channels of the wireless access points of each micro cell. The camping channel resource configuration table comprises: 1) frequency used by a camping channel of a microcell wireless access point; 2) the position of the resident channel of the micro cell wireless access point in the wireless frame.

Furthermore, the network side updates the resident channel resource configuration table of the micro-cell wireless access point according to the change of the time-frequency resource used by the resident channel of the micro-cell wireless access point;

furthermore, the network side establishes an extended channel resource allocation table for the time-frequency resources used by the extended channels of the wireless access points of each micro cell. The extended channel resource configuration table includes:

1) frequency used by an extension channel of a microcell wireless access point;

2) the position of an extended channel of a micro-cell wireless access point in a wireless frame;

furthermore, the network side updates the extended channel resource configuration table of the micro-cell wireless access point according to the change of the time-frequency resource used by the extended channel of the micro-cell wireless access point;

step S105, the micro-cell wireless access point performs channel configuration and beacon configuration for interference group detection according to the channel configuration information sent by the network side.

The channel configuration information comprises one or more of the following information:

1) and resident channel time-frequency resource assignment information. The method comprises the following steps: carrier frequency and time interval used by the dwell channel; the position of the control channel of the resident channel and the transmission power of the control channel;

2) and expanding channel time-frequency resource assignment information. The method comprises the following steps: expanding the carrier frequency and time interval used by the channel; the position of the control channel of the extension channel and the transmission power of the control channel;

3) beacon information for interference group sounding. The method comprises the following steps: a time-frequency window for sending interference relation measurement signals; the transmitted interference relation measures the pseudo-random sequence used by the signal.

Further, the network side sends configuration parameters of uplink and downlink time slots in the TDD wireless frame to the micro cell wireless access point, such as the ratio of the uplink and downlink time slots and the position of the uplink and downlink time slot switching point.

A micro cell wireless access point transmits and/or receives signals on time-frequency resources used by resident channel resources appointed by the network side;

the method comprises the steps that a micro cell wireless access point sends an interference group detection beacon signal or an interference relation measurement signal according to the sending frequency of the interference group detection beacon signal assigned by a network side and an identification number ID assigned to the micro cell wireless access point, wherein specifically, the beacon signal assigned to the micro cell wireless access point is a pseudo-random sequence signal;

the mode of assigning the identification number ID to the micro-cell wireless access point is one of the following modes:

1) the sequence number with a pseudo-random sequence represents the identification information of the micro-cell wireless access point;

2) bearing ID codes for picocell wireless access points on pseudo-random sequences

According to steps S101 to S105, the network side performs channel configuration and interference group detection beacon configuration on the micro cell wireless access point in the frequency band used by the first wireless access technology, and uses the interference relationship or interference group relationship obtained in the frequency band used by the first wireless access technology for the micro cell wireless access points using a plurality of wireless access technologies in the frequency band used by other wireless access technologies.

After completing the resource allocation of the micro-cell wireless access point according to the steps S101-S105, when the wireless load of the micro-cell wireless access point exceeds the supporting capability of the resident channel resource, the micro-cell wireless access point resource management unit at the network side assigns the time-frequency resource of the extension channel to the micro-cell wireless access point;

further, after completing resource configuration of the corresponding camping channel and the extension channel on the frequency bands used by two or more air interface technologies supported by the micro cell wireless access point according to steps S101 to S105, when the wireless load of the micro cell wireless access point in the available frequency band of one of the air interface technologies exceeds the supporting capability of the channel resource, the micro cell wireless access point resource management unit on the network side switches or schedules the terminal served by the micro cell wireless access point to the frequency band used by the other air interface technologies supported by the micro cell wireless access point and the terminal.

The microcell wireless access point supports interference relation measurement and wireless environment measurement, and is used for avoiding interference between microcells and interference between the microcells and a macrocell through self-adaptive configuration of working channels of the microcell wireless access points under the condition that a plurality of microcell wireless access points exist in the same geographic area or spatial area.

As shown in fig. 3, the micro cell wireless access point 300 includes:

a communication unit 312, an interference relation and radio environment measuring unit 311 and an interface unit 310.

The communication unit 312, which provides a communication service to the terminal in the micro cell on the available frequency band obtained by the interference relationship and measurement of the radio environment measurement unit 311 using the specification of the radio access point, includes:

a synchronization control unit 301, a channel allocation control unit 302, a radio access point receiving/transmitting unit 303, and an antenna unit 309.

An interference relationship and radio environment measuring unit 311, configured to measure the signal strength and the access point identification number of one or more microcell radio access points having a potential interference relationship with the microcell radio access point, and measure spectrum resources available to the first radio access point, including:

a radio environment measuring unit 304, an interference relation measuring signal generating unit 305, an interference relation measuring signal transmitting unit 306, an interference relation measuring signal receiving unit 307, an interference relation and radio environment measuring control unit 308,

an interface unit 310 for communication between a micro cell wireless access point and another wireless communication device or with a wired network, includes: a digital channel or a channel interface consisting of analog and digital channels.

The synchronization control unit 301 receives an air interface synchronization signal from the interface unit 310, and controls the start time of the air interface radio frame header of the micro cell radio access point by using the received air interface synchronization signal. The receiving air interface synchronization signal is for one of:

1) the system is used for realizing time synchronization between the air interfaces of the micro-cell wireless access points;

2) the time synchronization of the air interfaces between the micro cell wireless access points and the macro cell wireless access points is realized;

the time synchronization means that the frame header start times of the radio frames of the air interface are the same or differ by a fixed time relationship.

The synchronization signal used by the synchronization control unit 301 is derived in one of the following ways: 1) a synchronization signal from a macrocell air interface received by a wireless communication device connected thereto; 2) a synchronization signal from a wired network; 3) the time synchronization signal is obtained by a satellite receiver, in particular, a signal receiver of a satellite positioning system on a wireless communication device connected thereto according to the present invention.

The channel configuration control unit 302 receives available spectrum resource information and channel configuration information sent to the micro cell wireless node by the network side from the interface unit 310, and configures a channel for the micro cell wireless access point on a frequency band assigned by the available spectrum resource information according to a channel configuration mode assigned by the channel configuration information;

the radio access point receiving/transmitting unit 303 is a receiving/transmitting unit operable in one or more operation modes, and specifically, the radio access point receiving/transmitting unit 303 supports one or more of the following specifications of a base station of a wireless communication system:

1) specifications of cellular mobile communication network base stations, such as GSM, UMTS, LTE, CDMA2000, etc.;

2) specifications for wireless local area network access points, e.g. IEEE802.11 a-g

The wireless environment measuring unit 304 is composed of a radio frequency receiving channel and a signal processing unit, wherein the radio frequency receiving channel performs low noise amplification on a radio frequency signal or an interference signal on a specified frequency band, and then sends the radio frequency signal or the interference signal to the signal processing unit for parameter estimation or information demodulation. The wireless environment measurement unit 304 measures the specified frequency band according to a measurement instruction sent by the network, and the measurement items are one or more of the following items:

1) existing signal or interference power/strength on a specified frequency band;

2) demodulating and decoding information of the signal on the specified frequency band;

the interference relationship measurement signal generation unit 305 generates a pseudo random sequence that carries identification information of the microcell wireless access point, such as an ID number of the microcell wireless access point 300. Further, the pseudo-random sequence carries one or more of the following information:

1) the transmit power of the pseudo-random sequence transmitted by the picocell wireless access point 300;

2) the current working state information of the micro cell wireless access point 300, such as whether the current working state information is zero load;

the interference relation measuring signal transmitting unit 306 transmits the pseudo random sequence generated by the interference relation measuring signal generating unit 305 on the specified frequency band with the specified transmission power. The interference relation measurement signal transmitting unit 306 shares a transmitting antenna with the radio access point receiving/transmitting unit 303. The interference relation measuring signal transmitting unit 306 transmits a signal covering an area greater than or equal to an area covered by a signal transmitted by the wireless access point receiving/transmitting unit 303.

Specifically, the interference relation measuring unit in the interference relation and radio environment measuring unit operates on a permitted frequency band of the first radio technology but adopts a signal with a different form from that specified in the first radio technology specification.

The first wireless technology is a GSM technology or LTE, IEEE802.11a-g and UMTS technical specification.

The signals with the different signal form specified by the first wireless technical specification are used, and specifically, the identification information of the wireless access points of different microcells is sent by using the CDMA technology on the frequency band used by the GSM or OFDM air interface.

The interference relation measurement signal receiving unit 307 includes a receiving channel unit, a signal power measurement unit and a signal demodulation unit, where the receiving channel unit receives the interference relation measurement signal transmitted by the wireless access point of another micro cell on the specified channel, and the signal power measurement unit identifies, measures power and demodulates information of the interference relation measurement signal transmitted by the wireless access point of another micro cell in the probe set specified by the network side.

The specific implementation manner of the transmission channel and the reception channel of the interference relation measurement signal transmission unit 306 and the interference relation measurement signal reception unit 307 is one of the following manners:

1) the transmission channel and the reception channel of the interference relation measurement signal transmission unit 306 and the interference relation measurement signal reception unit 307 are channels which are configured on the frequency band used by the system to which the macrocell access point belongs and are different from the wireless technical specification used by the macrocell wireless access point, for example, an interference relation measurement signal in the CDMA format is transmitted on the frequency band used by the GSM system;

2) the transmission channel and the reception channel of the interference relation measurement signal transmission unit 306 and the interference relation measurement signal reception unit 307 are transmission and reception channels of the existing CDMA system, and transmit the interference relation measurement signal on a licensed frequency band of the CDMA system, for example, the interference relation measurement signal is transmitted on the licensed frequency band by using a base station specification conforming to systems such as WCDMA/CDMA2000/TD-SCDMA on a micro cell wireless access point, and the measurement result is used for channel configuration of the air interface of the micro cell wireless access point using the GSM base station specification;

the interference relation and radio environment measurement control unit 308 receives a measurement control command from the network side, and controls the operation modes of the radio environment measurement unit 304, the interference relation measurement signal generation unit 305, the interference relation measurement signal transmission unit 306, and the interference relation measurement signal reception unit 307. The method specifically comprises the following steps:

the interference relation and radio environment measurement control unit 308 assigns the measured frequency band and the measured items to the radio environment measurement unit 304;

the interference relation and radio environment measurement control unit 308 assigns the number of the measurement sequence and the carried information to the interference relation measurement signal generation unit 305;

the interference relation and wireless environment measurement control unit 308 assigns the frequency point and the transmission time interval of the transmission channel, and the transmission power to the interference relation measurement signal transmission unit 306;

the interference relation and wireless environment measurement control unit 308 assigns a receiving frequency point and a time window of a receiving channel, and a sounding set of a micro cell wireless access point to the interference relation measurement signal receiving unit 307. Further, the interference relation measurement signal receiving unit 307 is assigned with measurement items, including one or more of the following items:

1) power measurement of the interference relation measurement signal;

2) and the interference relation measurement signal carries the identification information of the micro cell access point.

The antenna unit 309 includes one or more antenna physical units, and is used for transmitting and receiving signals of the microcell wireless access point.

After the micro-cell wireless access point is powered on and started, the self frequency spectrum using capacity is reported to a network side through an interface unit 310, then control information required by interference relation and wireless environment measurement is obtained from the network side, after the interference relation and wireless environment measurement control unit 308 controls a corresponding functional unit to complete the interference relation and wireless environment measurement, the interference relation and wireless environment measurement result is reported to the network side, and the network side assigns a resident channel resource and a channel configuration mode for the micro-cell wireless access point according to the measurement result reported by the micro-cell. The channel configuration control unit 302 configures a channel for the wireless access point receiving/sending unit 303 according to the resident channel resource and the channel configuration mode information sent by the network side, and the wireless access point receiving/sending unit 303 sends the cell broadcast information on the resident channel according to the wireless frame synchronization time relationship assigned by the synchronization control unit 301.

The communication system for managing the resources of the microcell wireless access point is used for configuring the channel of the microcell wireless access point according to the interference relation measurement and the wireless environment measurement result and realizing the sharing of the frequency spectrum resources in the microcell.

As shown in fig. 4, the communication system for performing resource management on a micro cell wireless access point according to the present invention includes a micro cell wireless access point resource management unit 400, at least one micro cell wireless access point 300; the radio resource management unit 400 includes an interference relationship measurement management unit and a radio environment measurement management unit.

1) allocating frequency and time intervals for channels of interference relation measurement signals transmitted by the micro-cell wireless access points;

2) assigning a detection set for the micro-cell wireless access point, wherein the detection set comprises indication information of interference relation measurement signals transmitted by a group of potential adjacent wireless access points;

further, the interference relationship measurement management unit processes the measurement result reported by the interference relationship measurement signal receiving unit 307 for the micro cell wireless access point to obtain the interference relationship of the micro cell wireless access point;

the wireless environment measurement management unit manages the micro-cell wireless access point as follows:

1) assigning a measured frequency range to the radio environment measurement unit 304 in the microcell radio access point;

2) a measurement mode is designated for a wireless environment measurement unit 304 in a microcell wireless access point, and the measurement mode comprises the following steps: number of measurements for a given frequency spectrum, measurement time interval

Further, the wireless environment measurement management unit processes the measurement result reported by the wireless environment measurement unit 304 in the microcell wireless access point, and determines the time-frequency resource and the shared time-frequency resource used by the resident channel of the microcell wireless access point

Further, the radio resource management unit 400 includes a camping channel resource configuration table and a shared resource table of the micro cell radio access point and a usage status table thereof.

The radio resource management unit 400 is a network element or a functional unit on the network side, and performs the following management functions:

1) managing the resident channel resources of the microcell wireless access point 300;

2) managing shared spectrum resources among microcell wireless access points;

the specific method for the radio resource management unit 400 to manage the resident channel resource of the microcell radio access point 300 is as follows: establishing a resident channel resource configuration table for the time-frequency resources used by the resident channel of each micro-cell wireless access point 300, wherein the resident channel resource configuration table comprises: the frequency used by the camping channel of the picocell wireless access point 300; where the camping channel of the microcell wireless access point 300 occurs in a wireless frame. And, further, according to the change of available resources of the micro cell wireless access point 300, updating the resident channel resource configuration table;

the specific method for the radio resource management unit 400 to manage the shared frequency resources of the micro cell radio access point 300 and other micro cell radio access points is as follows: establishing a shared resource table and a usage state table thereof for each micro cell wireless access point 300, wherein the shared resource table and the usage state table thereof comprise: a frequency parameter and an available time parameter of the shared frequency resource; the number of microcell wireless access points participating in sharing these shared resources; and the micro-cell wireless access points participating in sharing the shared time-frequency resources use the shared time-frequency resources. And, further, the radio resource management unit 400 updates the shared resource table and the usage state table thereof according to the change of the shared time-frequency resource of the microcell radio access point 300;

the radio resource management unit 400 receives the spectrum utilization capability information, the interference relationship, the radio environment measurement result and the resource request information reported to the network side by the micro cell radio access point, and the mode for reporting the spectrum utilization capability information, the interference relationship, the radio environment measurement result and the resource request information to the network by the micro cell radio access point is one or a combination of the following two modes:

1) reporting through a wired channel: the microcell wireless access points 300b/300c report to the wireless resource management unit 400 through the channel 406/407 in the wired network; 2) reporting through a wireless channel: the specific implementation manner of reporting the micro cell wireless access point 300a to the radio resource management unit 400 through the channel 405 in the radio access network is as follows: the micro cell wireless access point 300a reports to the macro cell wireless access network composed of the RRU unit 402 and the BBU unit 401 accessed thereto through the communication device 403 facing the wireless access network connected thereto, and the reported information and measurement result are transmitted to the radio resource management unit 400 through the BBU unit 401.

The radio resource management unit 400 sends the following management information to the microcell radio access point by using the wired channel and/or the radio channel according to the spectrum utilization capability information, the interference relationship, the radio environment measurement result and the resource request information reported by the microcell radio access point: 1) interference relationship measurement management information; 2) wireless environment measurement management information; 3) and micro cell channel configuration information.

The essence of the technical solution of the present invention is further clarified by specific examples below.

The embodiment takes a process of configuring channel resources by a GSM and LTE dual-mode microcell wireless access point as an example to explain implementation steps of the method provided by the present invention.

Step S101, the GSM and LTE dual-mode microcell wireless access point reports the current spectrum use capability to the network side.

The GSM and LTE dual-mode microcell wireless access point reports the current spectrum use capability to a network side, and the reporting parameters comprise:

the frequency band range of GSM and LTE FDD currently available by the GSM and LTE dual-mode microcell wireless access point, the GSM frequency band is the frequency band B3 located in the 1800MHz frequency band shown in fig. 2, and the LTE FDD frequency band is the frequency band B4 located in the 2600MHz frequency band shown in fig. 7;

and radio frequency channel parameters currently owned by the GSM and LTE dual-mode microcell wireless access point. Specifically, the GSM and LTE dual-mode microcell wireless access point has a GSM radio frequency transceiving channel working at the 1800MHz frequency band, and the channel covers all frequency bands of a GSM licensed frequency band of the 1800MHz frequency band; the GSM and LTE dual-mode microcell wireless access point has an LTE FDD radio frequency transceiving channel working in a 2600MHz frequency band, and the channel covers all frequency bands of LTE FDD licensed frequency bands of the 2600MHz frequency band

The baseband processing unit of the GSM and LTE dual-mode microcell wireless access point can simultaneously support the baseband processing of GSM and LTEFDD;

the GSM and LTE dual-mode micro cell wireless access point reports the parameters to the micro cell wireless access point resource management unit 400 on the network side through the wireless backhaul link connected to the GSM and LTE dual-mode micro cell wireless access point. The triggering mode of reporting the parameters by the GSM and LTE dual-mode microcell wireless access point is as follows: 1) after initial installation and power-on starting; 2) after hardware or software is upgraded; 3) reporting according to a control command of a network side; 4) and reporting at regular time.

Step S102, a network side assigns spectrum measurement items and measurement auxiliary parameters for GSM and LTE dual-mode microcell wireless access points.

The network side assigns the measurement items for the GSM and LTE dual-mode microcell wireless access point as follows: measuring interference relationship between the GSM and LTE dual-mode microcell wireless access point and other GSM and LTE dual-mode microcell wireless access points;

and measuring interference relation between the GSM and LTE dual-mode microcell wireless access point and the GSM and LTE macrocell wireless access point. Namely, the GSM and LTE dual-mode microcell wireless access point measures the signal power and/or signal category of GSM and LTE FDD macrocells existing at the geographical or spatial position where the GSM and LTE dual-mode microcell wireless access point is deployed.

Background interference power measurements on candidate operating bands of GSM and LTE dual-mode microcell wireless access points. A candidate operating band for a GSM and LTE dual-mode microcell wireless access point refers to a band that allows use of the air interface of the GSM or LTE specifications of the GSM and LTE dual-mode microcell wireless access point in a particular area, but there may be interference power generated by the communication channels of other wireless access points.

The GSM and LTE dual-mode microcell wireless access point measurement auxiliary parameters comprise the following parameters: in this embodiment, because the GSM and LTE FDD air interfaces are deployed together in one device, the interference relationship is only measured on the GSM operating frequency band, and the LTE FDD air interface uses the interference relationship on the GSM frequency band as its own interference relationship. The method comprises the following steps:

a) microcell interference relationship detection set on GSM band: specifically, ID numbers of a group of measured GSM microcell wireless access points;

b) the measured GSM microcell wireless access point transmits the ID number of the GSM microcell wireless access point, a time-frequency window of a beacon and a signal form of the beacon;

and auxiliary parameters for measuring interference relationship between the GSM and LTE dual-mode microcell wireless access point and the GSM and LTE FDD macrocell wireless access point. The method comprises the following steps:

c) a GSM macrocell microcell interference relationship detection set and an LTE FDD macrocell microcell interference relationship detection set.

Auxiliary parameters for background interference power measurement on GSM candidate operating frequency bands and on LTE FDD candidate operating frequency bands of GSM and LTE dual-mode microcell wireless access points.

Step S103, reporting the measurement data to the network side by the GSM and LTE dual-mode microcell wireless access point

The GSM and LTE dual-mode microcell wireless access point sends the following measurement data to a microcell wireless access point resource management unit at the network side.

1) And the GSM and LTE dual-mode microcell wireless access point and other GSM and LTE dual-mode microcell wireless access points acquire measurement data from interference relation measurement items on a GSM frequency band.

2) And the measurement data is obtained from interference relation measurement items between the GSM and LTE dual-mode microcell wireless access point and the GSM macrocell wireless access point and between the GSM and LTE dual-mode microcell wireless access point and the LTE FDD macrocell wireless access point.

3) And the GSM and LTE dual-mode microcell wireless access point obtains data from background interference power measurement items on GSM and LTE FDD candidate operating frequency bands.

And step S104, the network side determines the shared frequency band between the GSM and LTE dual-mode microcell wireless access point and other microcell wireless access points in the interference group on the GSM frequency band and the LTE FDD frequency band according to the measurement result reported by the GSM and LTE dual-mode microcell wireless access point, and determines the time-frequency resource used by the resident channel on the GSM and LTE FDD frequency band for the GSM and LTE dual-mode microcell wireless access point.

The resident channel of the GSM and LTE dual-mode microcell wireless access point on the GSM and LTE FDD frequency band refers to: 1) the GSM and LTE dual-mode microcell wireless access point establishes control channels, such as a non-channel, an uplink access channel and a cell broadcast channel, which are necessary for a cell on a GSM frequency band and/or an LTE FDD frequency band; 2) the GSM and LTE dual-mode microcell wireless access point needs to keep the minimum number of service channels in order to keep the basic service capability on a GSM frequency band and/or an LTE FDD frequency band;

the specific implementation steps of the GSM and LTE dual-mode microcell wireless access point for determining the frequency band which can be shared with other microcell wireless access points in the interference group on the GSM frequency band are as follows:

in the sub-step P104a, the microcell wireless access point resource management unit at the network side determines an interference group of the GSM and LTE dual-mode microcell wireless access point on the GSM frequency band according to the neighboring cell ID information of the GSM microcell, which is reported by the GSM and LTE dual-mode microcell wireless access point and whose interference strength on the GSM frequency band exceeds a predetermined threshold one;

in substep P104b, the femtocell wireless access point resource management unit at the network side determines, according to the interference power measurement result obtained in the idle time interval reported by the GSM and LTE dual-mode femtocell wireless access point and used in the frequency band used by the camping channel of the other femtocell wireless access point in the interference group, the frequency band used by the camping channel whose interference strength is lower than the predetermined threshold two as the shared frequency band of the GSM and LTE dual-mode femtocell wireless access point and the femtocell wireless node using the camping channel;

in sub-step P104c, when there is no GSM frequency resource used for GSM and LTE dual-mode microcell wireless access points on the candidate operating frequency band of the GSM microcell, the microcell wireless access point resource management unit on the network side selects a shared frequency band of the GSM and LTE dual-mode microcell wireless access point and the microcell wireless node in its interference group as the time-frequency resource configuring the GSM resident channel of the GSM and LTE dual-mode microcell wireless access point.

The time-frequency resource of the GSM resident channel of the GSM and LTE dual-mode microcell wireless access point in the step is a GSM carrier or a time interval on a wireless frame on a specific GSM carrier;

and the network side establishes a resident channel resource configuration table for GSM or LTE FDD time-frequency resources used by the resident channel of each GSM and LTE dual-mode microcell wireless access point. The camping channel resource configuration table comprises: 1) the frequency used by GSM and/or LTE resident channels of GSM and LTE dual-mode microcell wireless access points; 2) the position of a GSM and/or LTE resident channel of a GSM and LTE dual-mode microcell wireless access point in a wireless frame;

furthermore, the network side updates a resident channel resource configuration table of the GSM and LTE dual-mode microcell wireless access point according to the change of time-frequency resources used by the resident channel of the GSM and LTE dual-mode microcell wireless access point;

further, the network side establishes an extended channel resource configuration table for the time-frequency resources used by the GSM and/or LTE extended channels of each GSM and LTE dual-mode microcell wireless access point. The extended channel resource configuration table includes: 1) the frequency used by GSM and/or LTE extension channels of GSM and LTE dual-mode microcell wireless access points; 2) the position of a GSM and/or LTE extended channel of a GSM and LTE dual-mode microcell wireless access point in a wireless frame;

further, the network side updates the GSM and/or LTE extension channel resource configuration table of the GSM and LTE dual-mode microcell wireless access point according to the change of the time-frequency resources used by the GSM and/or LTE extension channels of the GSM and LTE dual-mode microcell wireless access point.

And step S105, the GSM and LTE dual-mode microcell wireless access point performs channel configuration and beacon configuration for interference group detection according to the channel configuration information sent by the network side.

The channel configuration information comprises one or more of the following information: 1) and GSM and/or LTE resident channel time-frequency resource assignment information of the GSM and LTE dual-mode microcell wireless access point. 2) And the GSM and LTE dual-mode microcell wireless access point GSM and/or LTE extension channel time-frequency resource assignment information. 3) And beacon assignment information for detecting GSM interference groups of the GSM and LTE dual-mode microcell wireless access points. The method comprises the following steps: sending a time-frequency window of an interference relation measurement signal on a GSM frequency band; the transmitted interference relation measures the pseudo-random sequence used by the signal.

The GSM and LTE dual-mode microcell wireless access point transmits and/or receives signals on time-frequency resources used by GSM and/or LTE resident channel resources appointed by the network side;

after the resource configuration of the corresponding resident channel and the extended channel is respectively completed on the frequency bands used by the GSM and LTE air interface technologies supported by the GSM and LTE dual-mode microcell wireless access points according to the steps S101 to S105, when the wireless load of the GSM and LTE dual-mode microcell wireless access points on the GSM air interface technologies exceeds the supporting capability of the channel resources thereof, the microcell wireless access point resource management unit at the network side switches or schedules the terminal served by the GSM and LTE dual-mode microcell wireless access points on the GSM frequency band to the frequency band used by the LTE air interface technologies supported by both the GSM and LTE dual-mode microcell wireless access points and the terminal.

The GSM microcell access point provided by the invention is used for solving the problem that under the condition that a plurality of GSM microcell wireless access points exist in the same geographic area or spatial area, the interference between the GSM microcell wireless access points and the GSM macrocell are avoided by the self-adaptive configuration of working channels of the GSM microcell wireless access points.

In this embodiment, the specific implementation technique when the microcell wireless access point shown in fig. 3 is used as a GSM microcell wireless access point is as follows:

the synchronization control unit 301 receives a synchronization signal between air interface radio frames of the GSM system base station from the interface unit 310, and controls the start time of a frame header of the air interface radio frame of the GSM microcell radio access point using the received air interface synchronization signal. In this embodiment, the time synchronization means that the start times of the air interface radio frame headers of the GSM microcell radio access points are the same.

The synchronization signal used by the synchronization control unit 301 is received from the wired network through the interface unit 310, and the synchronization signal controls the start time of the frame header of the air interface radio frame of the GSM microcell wireless access point to be the same as the time of the frame header of the air interface radio frame transmitted by the GSM macrocell base station reaching the location of the GSM microcell wireless access point.

The channel configuration control unit 302 receives, from the interface unit 310, available spectrum resource information and channel configuration information sent to the GSM micro cell wireless node by the network side, and configures a control channel or configures a control channel and a traffic channel for the GSM micro cell wireless access point on the GSM carrier assigned by the available spectrum resource information according to the timeslot number in the GSM wireless frame assigned by the channel configuration information.

The radio access point receiving/transmitting unit 303 is a communication unit designed according to the specifications of a GSM base station.

The wireless environment measuring unit 304 measures the frequency usage on the operating frequency band of the specific GSM system at the installation location of the wireless access point of the GSM microcell, including the following frequency measurements:

1) measurement of carrier used by GSM macrocell base station covering GSM microcell wireless access point installation location

2) Measurement of background interference on frequency bands not used by GSM macrocell base stations covering GSM microcell wireless access point installation locations

The wireless environment measuring unit 304 further sends the GSM carrier path number whose background interference power exceeds the predetermined threshold to the GSM microcell wireless access point resource management unit on the network side.

The interference relationship measurement signal generation unit 305 generates a pseudo-random sequence, where the pseudo-random sequence carries identification information of the GSM microcell wireless access point, such as an ID number of the GSM microcell wireless access point 300.

The interference relation measuring signal transmitting unit 306 transmits the pseudo random sequence generated by the interference relation measuring signal generating unit 305 on the specified frequency band with the specified transmission power.

The interference relationship measurement signal receiving unit 307 is composed of a radio frequency receiving channel working on a carrier used by a GSM macro cell base station covering a GSM micro cell wireless access point and a pseudo random sequence signal processing unit, wherein the radio frequency receiving channel performs low noise amplification on a radio frequency signal or an interference signal on a specified frequency band, and then sends the radio frequency signal or the interference signal to the pseudo random sequence signal processing unit for parameter estimation or information demodulation. The interference relation measurement signal receiving unit 307 performs measurement of the interference relation measurement signal according to a group of pseudo random sequences given in the probe set on the GSM carrier and time slot specified by the measurement instruction sent by the network, and the completed measurement items are: 1) identifying a pseudo-random sequence, namely identifying a GSM microcell wireless access point to which an interference relation measurement signal transmitting unit 306 for transmitting the sequence belongs; 2) measuring the radio frequency signal power of the pseudo-random sequence;

the interference relation and radio environment measurement control unit 308 receives a measurement control command from the network side, and controls the operation modes of the radio environment measurement unit 304, the interference relation measurement signal generation unit 305, the interference relation measurement signal transmission unit 306, and the interference relation measurement signal reception unit 307. The interference relationship and radio environment measurement control unit 308 and the above functional modules form a single interference relationship and radio environment measurement physical module 311, and then cooperate with the radio access point GSM receiving/transmitting unit 303 to obtain the radio environment and available frequency data for channel configuration of the GSM receiving/transmitting unit 303.

The antenna unit 309 comprises an antenna operating in the GSM frequency band, and is used for transmitting and receiving signals of the GSM transmitting/receiving unit 303, receiving signals for measuring the wireless environment, and transmitting and receiving signals for measuring the interference relationship.

The interface unit 310, which includes a channel interface composed of digital or analog and digital channels, supports the communication between the GSM microcell wireless access point and the wired network using twisted pair.

After the wireless access point of the GSM microcell is powered on and started, the wireless access point of the GSM microcell firstly reports the spectrum using capacity of the wireless access point to a network side through an interface unit 310, then a detection set required by interference relationship and wireless environment measurement is obtained from the network side, an interference relationship and wireless environment measurement control unit 308 controls a wireless environment measurement unit 304, an interference relationship measurement signal generation unit 305, an interference relationship measurement signal emission unit 306 and an interference relationship measurement signal receiving unit 307 to complete interference relationship and wireless environment measurement, then the interference relationship and wireless environment measurement result is reported to the network side, and the network side assigns a carrier number and a time slot number used by a resident channel for the wireless access point of the GSM microcell according to the interference relationship in the wireless access point of the GSM microcell and the measurement result reported by a physical module 311 for wireless environment measurement. The channel configuration control unit 302 configures a channel for the wireless access point receiving/sending unit 303 according to the carrier number and the timeslot number used by the camping channel sent by the network side, and the wireless access point receiving/sending unit 303 sends cell broadcast information or sends cell broadcast information and service data on the camping channel according to the wireless frame synchronization time relationship assigned by the synchronization control unit 301.

Channel resource embodiments are configured for densely deployed microcell wireless access points on the spectrum used by cellular mobile communication systems.

In the implementation presented in fig. 5, the method includes: one microcell wireless access point resource management unit 400, and 7 densely deployed microcell wireless access points 300 and 300 b-h.

The 7 densely deployed microcell wireless access points 300 and 300 b-h are GSM or LTE-FDD single mode microcell wireless access points, or GSM and LTE-FDD dual-mode microcell wireless access points.

The radio resource management unit 400 performs resource management on the GSM microcell radio access point on the frequency band B3 or the LTE FDD microcell radio access point on the frequency band B4, or the radio resource management unit 400 performs joint resource management on the GSM microcell radio access point on the frequency band B3 and the LTE FDD microcell radio access point on the frequency band B4.

When the microcell wireless access point 300 is an access point supporting the GSM base station specification, the procedure of the radio resource management unit 400 to manage the GSM microcell wireless access point operating on the frequency band B3 is:

fig. 6 shows a schematic diagram of the spectrum management of a GSM microcell wireless access point operating in band B3 by the radio resource management unit 400. Referring to fig. 5, in the figure, the microcell 501 covered by the GSM microcell wireless access point 300 and the microcells 300B to h are both within the range of the macrocell 502 covered by the GSM macro base station, the frequency band used by the GSM macrocell is B3, after frequency multiplexing, the frequency band used within the range of the macrocell 502 is the sub-band S2 of the frequency band B3, and the remaining frequency band after removing the sub-band S2 from the frequency band B3 is the frequency band used by the GSM microcell wireless access point 300 and the microcells 300B to h through wireless environment recognition.

In this embodiment, the band B3 is around 1800 MHz.

In this embodiment, the radio resource management unit 400 configures the transmission/measurement window 205 of the interference relationship measurement signal on the sub-band S1 of the sub-band S2, and the interference relationship measurement signal transmitting unit 306 and the interference relationship measurement signal receiving unit 307 in the GSM microcell wireless access point perform the measurement of the interference relationship in the transmission/measurement window.

The interference relationship measurement result indicates that there are 6 GSM microcell wireless access points 300B-h with interference relationship in the GSM microcell wireless access point 300, see fig. 6(B) - (g), and the 6 GSM microcell wireless access points 300B-h with interference relationship have all occupied the sub-bands/carriers available for the microcells in the band B3, in order to configure the camping channel for the GSM microcell wireless access point 300, the radio resource management unit 400 determines from the frequency bands S3-S8 in which the carriers used by the GSM microcell wireless access points 300B-h are located that the sub-band S6 is a frequency band that can be used by the GSM microcell wireless access point 300 and does not generate interference to the neighboring GSM wireless access points, so the radio resource management unit 400 configures the camping channel for the GSM microcell wireless access point 300 in the sub-band S6, and the camping channel of the GSM microcell wireless access point 300 shares the sub-band with the camping channel of the GSM microcell wireless access point 300g in a time Carrier at S6.

In conjunction with the GSM frequency multiplexing scheme shown in fig. 8, the frequency band B3 has a bandwidth of 9.8MHz, and includes 49 GSM carriers, which can be divided into 9 groups or 12 groups according to the different multiplexing schemes, and when the frequency band B3 is divided into 9 groups (using 3 × 3 multiplexing scheme), the number of carriers in each group is 49/9 ≈ 5.4, that is, the number of channels in some groups is 5, and some are 6. When the cells are divided into 12 groups (i.e. 3 × 4 multiplexing), a maximum of 5 frequency channels (4.083 is obtained by dividing 49 frequency channels/carrier by 12), and generally 4 frequency channels are also available in each cell. Under 3 × 3 multiplexing, the number of carriers in the group with the largest number of carriers is 6, 49-6 ═ 43 carriers are not used in a macro cell using the group of carriers, a GSM micro cell wireless access point selects carriers suitable for self use from the 43 carriers not used by the macro cell to realize micro cell coverage, under the frequency multiplexing, S2 given in fig. 6 contains 6 carriers at most, and S3 to S8 are carriers for micro cells selected by measurement from the 49-6 ═ 43 carriers not used; in the case of 3 × 4 multiplexing, the number of carriers in the group having the largest number of carriers is 5. In the macro cell using the group of carriers, 49-5-44 carriers are not used, and the GSM micro-cell wireless access point selects carriers suitable for the GSM micro-cell from the 44 carriers which are not used by the macro cell to realize the coverage of the micro-cell. Under the frequency reuse, the S2 shown in fig. 6 contains 5 carriers at most, and S3 to S8 are carriers for the micro cell selected by measurement among 49-5 to 44 carriers that are not used

When the microcell wireless access point 300 is an access point supporting the LTE base station specification, the procedures of the radio resource management unit 400 for managing the LTE microcell wireless access point operating in the frequency band B4 are:

fig. 7 shows a schematic diagram of spectrum management of an LTE microcell wireless access point operating in a frequency band B4 by the radio resource management unit 400. Referring to fig. 5, in the figure, the microcell 501 covered by the LTE microcell wireless access point 300 and the microcells 300B to h are both within the range of the macrocell 502 covered by the LTE macro base station, the frequency band used by the LTE macrocell is B4, after soft frequency multiplexing, the frequency band used in the edge area of the macrocell 502 is the sub-band S2 of the frequency band B4, and the remaining frequency band after removing the sub-band S2 from the frequency band B4 is the frequency band used by the LTE microcell wireless access point 300 and the microcells 300B to h through wireless environment recognition.

In this embodiment, band B4 is around 2600 MHz.

In this embodiment, the radio resource management unit 400 configures the transmission/measurement window 205 of the interference relationship measurement signal on the sub-band S1 of the frequency band B4, and the interference relationship measurement signal transmission unit 306 and the interference relationship measurement signal reception unit 307 in the LTE microcell wireless access point perform the measurement of the interference relationship in the transmission/measurement window.

The result of the interference relationship measurement indicates that there are 6 LTE microcell wireless access points 300B-h having interference relationship, see fig. 6(B) - (g), and these 6 LTE microcell wireless access points 300B-h having interference relationship have allocated all of the sub-bands/time-frequency resource blocks available for microcells in the frequency band B4 to these LTE microcell wireless access points for use, and in order to configure a camping channel for the LTE microcell wireless access point 300, the radio resource management unit 400 determines, from the frequency bands S3-S8 in which the time-frequency resources used by the LTE microcell wireless access points 300B-h are located, that the sub-band S6 is a frequency band that can be used by the LTE wireless access point 300 and does not cause interference to the neighboring LTE microcell wireless access points, and then the radio resource management unit 400 configures a camping channel for the LTE microcell wireless access point 300 on the video resource block of the sub-band S6, the camping channel of the LTE microcell wireless access point 300 uses time-frequency resource blocks on sub-band S6 in a time-division manner with the camping channel of the LTE microcell wireless access point 300 g.

When the micro cell wireless access point 300 is a dual mode access point supporting GSM and LTE base station specifications, the procedure of the radio resource management unit 400 to manage the GSM and LTE micro cell wireless access points operating in the frequency bands B3 and B4 is:

when the micro-cell wireless nodes 300, 300B-300 g are GSM/LTE dual-mode micro-cell wireless nodes operating in B3 and B4, respectively, the wireless resource management unit 400 performs resource management on a GSM micro-cell wireless access point on a frequency band B3 and an LTE FDD micro-cell wireless access point on a frequency band B4.

The radio resource management unit 400 includes an interference relationship measurement management unit and a radio environment measurement management unit.

The interference relation measurement management unit manages the GSM and LTE dual-mode microcell wireless access points as follows: 1) assigning a frequency and a time interval for a channel for transmitting an interference relation measurement signal to a GSM (global system for mobile communications)/LTE (long term evolution) wireless access point in a GSM/LTE dual-mode microcell wireless access point; 2) appointing a detection set for GSM and LTE wireless access points in GSM/LTE dual-mode microcell wireless access points, wherein the detection set comprises indication information of interference relation measurement signals transmitted by a group of potential adjacent wireless access points;

further, the interference relationship measurement management unit processes the measurement result reported by the GSM/LTE dual-mode microcell wireless access point interference relationship measurement signal receiving unit 307 to obtain the interference relationship of the GSM/LTE dual-mode microcell wireless access point;

in order to simplify the overhead of interference relationship measurement and interference relationship processing, the interference relationship on the LTE frequency band in the GSM/LTE dual-mode microcell wireless access point adopts the interference relationship of the GSM microcell wireless access point operating on a lower frequency band.

The wireless environment measurement management unit manages the micro-cell wireless access point as follows: 1) assigning frequency ranges for radio environment measurements on band B3 and band B4 to the radio environment measurement unit 304 in the GSM/LTE dual-mode microcell radio access point; 2) the measurement modes on the frequency band B3 and the frequency band B4 are specified for the wireless environment measurement unit 304 in the GSM/LTE dual-mode microcell wireless access point, and the measurement modes comprise: number of measurements for a given frequency spectrum, measurement time interval

Further, the radio environment measurement management unit processes the measurement results on the frequency band B3 and the frequency band B4 reported by the radio environment measurement unit 304 in the GSM/LTE dual-mode microcell radio access point, and determines the time-frequency resources and the shared time-frequency resources used by the resident channels of the GSM/LTE dual-mode microcell radio access point on the frequency band B3 and the frequency band B4

Further, the radio resource management unit 400 stores a camping channel resource configuration table and a shared resource table of the micro cell radio access point on the frequency band B3 and the frequency band B4, and a usage state table thereof.

The radio resource management unit 400 is a network element or a functional unit on the network side, and performs the following management functions: 1) managing resident channel resources of the GSM/LTE dual-mode microcell wireless access point 300; 2) managing shared spectrum resources among GSM/LTE dual-mode microcell wireless access points;

the specific method for the radio resource management unit 400 to manage the resident channel resource of the GSM/LTE dual-mode microcell radio access point 300 is as follows: establishing a resident channel resource configuration table for the time-frequency resources used by the resident channels of each GSM/LTE dual-mode microcell wireless access point 300 on the frequency band B3 and the frequency band B4, wherein the resident channel resource configuration table comprises: frequencies used by the picocell wireless access point 300 for the camping channel on band B3 and band B4; where the camping channel of the picocell wireless access point 300 on band B3 and band B4 occurs in a wireless frame. And further, the camping channel resource configuration table is updated according to the change of the available resources of the GSM/LTE dual-mode microcell wireless access point 300 on the frequency band B3 and the frequency band B4.

The specific method for the radio resource management unit 400 to manage the shared frequency resources of the GSM/LTE dual-mode microcell radio access point 300 and other GSM/LTE dual-mode microcell radio access points is as follows: establishing a shared resource table and usage state table thereof on a frequency band B3 and a frequency band B4 for each GSM/LTE dual-mode microcell wireless access point 300, wherein the shared resource table and usage state table thereof on the frequency band B3 and the frequency band B4 comprise: a frequency parameter and an available time parameter of the shared frequency resource; the number of microcell wireless access points participating in sharing these shared resources; and the micro-cell wireless access points participating in sharing the shared time-frequency resources use the shared time-frequency resources. And, further, the radio resource management unit 400 updates the shared resource table and the usage status table thereof according to a change of the shared time-frequency resource of the micro cell radio access point 300 in the frequency band B3 and the frequency band B4.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A channel configuration method for a micro-cell wireless access point is suitable for determining time-frequency resources for a resident channel of the micro-cell wireless access point and determining a shared frequency spectrum between two or more micro-cell wireless access points; characterized in that the method comprises:

2. The method according to claim 1, wherein the reporting of the current spectrum utilization capability of the micro cell wireless access point to the network side specifically includes: the micro-cell wireless access point reports the current spectrum use capability by reporting at least one of the following parameters to the network side:

the frequency band which can be used by the micro-cell wireless access point currently and the wireless technical specification supported on the frequency band;

the current radio frequency channel parameters of the micro cell wireless access point;

the micro-cell wireless access point baseband processing unit can support the wireless communication technical specification simultaneously supported.

3. The method of claim 1, wherein the measurement items include at least one of:

measuring interference relationship between microcell wireless access points;

measuring interference relation between a micro cell wireless access point and a macro cell wireless access point;

background interference power measurement on a candidate operating frequency band of a micro cell wireless access point;

the measurement assistance parameters further include:

auxiliary parameters for measuring interference relationship between microcell wireless access points;

auxiliary parameters for measuring interference relationship between the microcell wireless access point and the macrocell wireless access point;

auxiliary parameters for background interference power measurements on candidate operating frequency bands of the microcell wireless access point.

4. The method of claim 1, wherein the reporting of the measurement data from the micro cell wireless access point to the network side includes at least one of the following parameters:

measurement data obtained from interference relation measurement items between microcell wireless access points;

measurement data obtained from interference relation measurement items between the microcell wireless access point and the macrocell wireless access point;

and data obtained by the background interference power measurement item on the candidate working frequency band of the micro-cell wireless access point.

5. The method according to claim 1, wherein the determining the shared frequency band between the microcell wireless access point and other microcell wireless access points in the interference group is specifically:

a micro-cell wireless access point resource management unit on a network side determines an interference group of a micro-cell wireless access point according to adjacent cell ID information of which the interference strength reported by the micro-cell wireless access point exceeds a preset threshold I;

a micro-cell wireless access point resource management unit at a network side determines a frequency band where a resident channel of a wireless node in an interference group with interference intensity lower than a second preset threshold is located as a shared frequency band of the micro-cell wireless access point and the micro-cell wireless node in the interference group thereof according to an interference power measurement result on an idle time interval where the resident channels of other micro-cell wireless access points in the interference group of the micro-cell wireless access point reported by the micro-cell wireless access point are located;

under the condition that the frequency resource which is independently used for the micro-cell wireless access point does not exist on the candidate working frequency band, the micro-cell wireless access point resource management unit on the network side selects a shared frequency band of the micro-cell wireless access point and the micro-cell wireless node in the interference group as a time-frequency resource for configuring a resident channel of the micro-cell wireless access point.

6. The method according to claim 1, wherein determining time-frequency resources of the camping channel for the micro cell wireless access point specifically includes:

configuring time-frequency resources of a resident channel for the micro-cell wireless access point under the condition that the frequency resources which are independently used for the micro-cell wireless access point do not exist on the candidate working frequency band of the micro-cell wireless access point; a network side takes a shared frequency band of a micro cell wireless access point and a certain micro cell wireless node in an interference group as a time-frequency resource for configuring a resident channel of the micro cell wireless access point;

or configuring time-frequency resources of a resident channel and an extended service channel for the micro-cell wireless access point under the condition that the frequency resources which are independently used for the micro-cell wireless access point exist on the candidate working frequency band of the micro-cell wireless access point.

7. The method of claim 6, wherein time-frequency resources of a camping channel are determined for a micro cell wireless access point, and further,

the network side selects a sub-band which is not used by the resident channel of other micro-cell wireless nodes in the interference group of the micro-cell wireless access point from a group of sub-bands which can be used by the micro-cell wireless access point, and configures the resident channel of the micro-cell wireless access point on the sub-band; alternatively, the network side selects a sub-band used by a camping channel of another micro-cell wireless node in the interference group of the micro-cell wireless access point from a group of sub-bands usable by the micro-cell wireless access point, and arranges the extension channel of the micro-cell wireless access point on the sub-band.

8. The method of claim 1, further comprising: the network side establishes a resident channel resource configuration table for time-frequency resources used by resident channels of each micro-cell wireless access point; the camping channel resource configuration table comprises:

frequency used by a camping channel of a microcell wireless access point;

the position of the resident channel of the micro cell wireless access point in the wireless frame.

9. The method of claim 1, further comprising: the network side establishes an extended channel resource allocation table for time-frequency resources used by an extended channel of each micro-cell wireless access point; the extended channel resource configuration table includes:

frequency used by an extension channel of a microcell wireless access point;

the position of the extension channel of the micro cell wireless access point in the wireless frame.

10. The method of claim 1, further comprising:

the micro-cell wireless access point transmits and/or receives signals on a time-frequency resource used by a resident channel resource appointed by the network side, and transmits an interference group detection beacon signal or an interference relation measurement signal according to the transmission frequency of the interference group detection beacon signal assigned by the network side and an identification number ID appointed by the micro-cell wireless access point.

11. The method according to claim 1, wherein the network side uses the channel configuration and the beacon configuration for interference group detection for the micro cell wireless access point on the frequency band used by the first wireless access technology, and uses the interference relationship or the interference group relationship obtained on the frequency band used by the first wireless access technology for the micro cell wireless access point using a plurality of wireless access technologies on the frequency bands used by other wireless access technologies.

12. A micro-cell wireless access point is characterized by comprising a communication unit, an interference relation and wireless environment measuring unit and an interface unit; wherein,

and the interface unit is used for communication between the micro-cell wireless access point and another wireless communication device or a wired network.

13. The picocell wireless access point according to claim 12, wherein said communication unit further includes a synchronization control unit and a channel configuration control unit; wherein,

the synchronous control unit receives an air interface synchronous signal from the interface unit and controls the starting time of a wireless frame header of an air interface of a micro-cell wireless access point by utilizing the received air interface synchronous signal;

and the channel configuration control unit receives available spectrum resource information and channel configuration information sent to the micro-cell wireless node from an interface unit, and configures a channel for the micro-cell wireless access point on a frequency band assigned by the available spectrum resource information according to a channel configuration mode assigned by the channel configuration information.

14. The femtocell radio access point of claim 12, wherein the interference relation measuring unit in the interference relation and radio environment measuring unit operates on a licensed band of the first radio technology and uses a signal having a different signal format from that specified in the first radio technology specification, further comprising an interference relation measuring signal generating unit, and an interference relation measuring signal transmitting unit and an interference relation measuring signal receiving unit for transmitting the interference relation measuring signal and receiving the interference relation measuring signal, respectively; and the interference relation measurement signal generating unit adopts CDMA technology to send the identification information of the wireless access points of different micro-cells on a frequency band used by a GSM or OFDM air interface.

15. A system for managing spectrum resources of a micro-cell wireless access point comprises a micro-cell wireless access point resource management unit and at least one micro-cell wireless access point; the wireless resource management unit comprises an interference relation measurement management unit and a wireless environment measurement management unit;

16. The system of claim 15, wherein the radio environment measurement management unit manages microcell radio access points as follows:

assigning a measured frequency range to the radio environment measurement unit 304 in the microcell radio access point;

a measurement mode is designated for a wireless environment measurement unit 304 in a microcell wireless access point, and the measurement mode comprises the following steps: measuring time intervals for the specified frequency spectrum measurement times;

the wireless environment measurement management unit further processes the measurement result reported by the wireless environment measurement list in the micro cell wireless access point, and determines the time frequency resource and the shared time frequency resource used by the resident channel of the micro cell wireless access point.

17. The system according to claim 15, wherein said radio resource management unit stores a camping channel resource configuration table and a sharing resource table of a micro cell radio access point and a usage status table thereof.