KR20160081764A - Radio resource allocation method and communication system supporting the same - Google Patents

Abstract

The present invention provides a method for selecting a radio resource allocation using interference information measured based on static FA selection information of a base station, a method for transmitting interference information measured by the terminal to a base station, And allocating a radio resource minimizing the radio resource to the mobile station.

Description

TECHNICAL FIELD [0001] The present invention relates to a radio resource allocation method and a communication system supporting the same,

The present invention relates to a radio resource allocation method in a wireless communication environment and a communication system supporting the same. In particular, the present invention relates to a method for minimizing interference due to various propagation environments and allowing a terminal to receive radio resources with minimal interference, and a communication system supporting the same.

The wireless communication system provides a variety of mobile communication environments such as HSDPA, HSUPA, LTE and LTE-A based on 3GPP and supports high-speed wireless data transmission service. The wireless communication system described above supports various service types in order to meet the rapidly increasing demand for data traffic.

For example, a wireless communication system supports a MIMO technique in which a space on a wireless channel is multiplexed based on a multi-input / output antenna, and the channel increases in proportion to the number of antennas, thereby increasing a data transmission amount. The MIMO technique includes SU-MIMO for transmitting to a single terminal, and MU-MIMO for transmitting to a plurality of terminals using the same time and frequency resources.

Recently, in a mobile communication system, OFDM is supported as an access method. An OFDMA scheme is also widely used in which a multiplexing technique for dividing and transmitting multiple carriers in multiple channels within a limited frequency is extended to allocate different subcarrier sets to different subcarriers.

In recent years, the wireless market has been expanding rapidly, centered on the smartphone market. As a result, the amount of user traffic in the wireless communication environment is increasing due to the use of various applications installed in the smartphone, and as a result, a traffic load phenomenon is occurring. In order to solve this problem, we are building dense base stations in dense traffic areas to meet user needs. However, the construction of an excessive base station is rather an excessive propagation environment for the user terminal, and the interference is increased and the service is inconvenient. In order to solve the above-mentioned problem, 3GPP provides various techniques for interference cancellation.

For example, 3GPP provides CoMP technology. The CoMP technique is a technique for increasing the throughput of the UE by reducing interference between cells and increasing the throughput of the UE at the boundaries of cells by allowing communication from neighboring cells as well as serving cells in cooperation with neighboring cells to increase the throughput of the UE.

In addition, 3GPP provides ICIC technology. The ICIC technique is an interference control technique of the LTE system defined in 3GPP release 8, and is a technique for reducing interference between cells by using different frequency resources between adjacent cells. The base station providing the ICIC can allocate radio resources to the mobile station in order to grasp the interference situation of neighboring cells and avoid interference through the X2 interface.

However, rather than the indirect removal (or control) technique described above, the base station grasps the interference information of the current terminal, and determines whether the terminal located in the current base station is an interference terminal or a non-interference terminal and minimizes the interference to the terminal It is preferable to perform scheduling.

An object of the present invention is to provide a method of selecting a radio resource allocation using interference information measured based on static FA selection information of a base station.

It is another object of the present invention to provide a method for transmitting interference information measured by a terminal to a base station and assigning a radio resource having a minimum interference to the terminal based on the interference information.

The present invention relates to a method for eliminating interference by sharing data on a base station or a terminal information base based on interference information of peripheral base stations measured by SINR (signal-to-interference plus noise ratio) The purpose is to provide.

According to another aspect of the present invention, there is provided a radio resource allocation method comprising: measuring interference or noise levels of signals from neighboring base stations and generating interference information corresponding to the measured values; Receiving a frequency allocation list accessible from the serving base station according to the interference state of the terminal, selecting an specific frequency allocation information from the frequency allocation list based on the interference information, An operation of transmitting the radio resource to the base station, and an operation of allocating the radio resource based on the selected frequency allocation information from the base station.

The operation of receiving the frequency allocation list may include an operation of receiving the frequency allocation list in the system information block of the broadcast control channel.

The operation of selecting the specific frequency allocation information may include selecting the specific frequency allocation information so that the interference from the neighbor base stations may be minimized.

A radio resource allocation method according to an embodiment of the present invention includes: an operation of measuring interference or noise level with respect to a signal from peripheral base stations and generating interference information corresponding to the measurement value; The method comprising the steps of: including information corresponding to interference information; transmitting the specific frame to a serving base station; and assigning the radio resource based on information corresponding to the interference information included in the specific frame from the base station Lt; / RTI >

Including the information may include including specified information in the particular frame when the terminal is in an interference condition.

A method of allocating radio resources according to an embodiment of the present invention includes the steps of measuring interference or noise level of signals from neighboring base stations and generating base station interference information based on the measured values, Channel to a serving base station, and receiving the radio resource based on the base station interference information from the base station.

The operation of generating the base station interference information may include an operation of including at least one base station information affected by the interference among the neighboring base stations in the base station interference information.

The operation of transmitting to the base station may include transmitting the base station interference information to the radio resource control connection request message.

A radio resource allocation system according to an embodiment of the present invention includes a base station for allocating radio resources and at least one terminal located in a coverage of the base station, Generates a frequency allocation list, transmits the frequency allocation list to the terminal via a control channel, measures a degree of interference or noise with respect to a signal from neighboring base stations, generates interference information corresponding to the measured value Selects the specific frequency allocation information from the frequency allocation list based on the interference information, and transmits the selected frequency allocation information to the base station, and the base station transmits the radio resource to the base station based on the selected frequency allocation information, . ≪ / RTI >

The BS may transmit the frequency allocation list to the MS by including the frequency allocation list in a system information block of a broadcast control channel.

The UE can select the specific frequency allocation information so that the interference from the neighbor base stations can be minimized.

A radio resource allocation system according to an embodiment of the present invention includes a base station for allocating radio resources and at least one terminal located in a coverage of the base station, Wherein the base station measures interference or noise level, generates interference information corresponding to the measured value, includes information corresponding to the interference information in a specific frame of the random access channel, and transmits the specific frame to the base station, And allocate the radio resource to the UE based on information corresponding to the interference information included in the specific frame.

The terminal can include the specified information in the specific frame when the terminal is in the interference state.

A radio resource allocation system according to an embodiment of the present invention includes a base station for allocating radio resources and at least one terminal located in a coverage of the base station, Interference, or noise, generates base station interference information based on the measured value, transmits the base station interference information to the base station through a common control channel, and the base station measures the base station interference information based on the base station interference information And can be allocated to the terminal.

The terminal may include at least one base station information affected by the interference among the neighbor base stations in the base station interference information.

The UE can transmit the RBAC interconnection request message including the BS interference information.

A method for allocating a radio resource according to an embodiment of the present invention includes allocating a first frequency assignment list (FA) that can be selected when a terminal located in a coverage area of the base station is in an interference state, Generating an FA list; transmitting, by the base station, the first FA list and the second FA list to the terminal through a control channel (CCH); and transmitting the signal-to-interference plus noise ratio (SINR) Selecting a specific FA through the first FA list and the second FA list based on the interference information measured by the first FA list and the second FA list, and transmitting the selected FA to the base station through a random access channel (RACH) , And allocating the radio resource by scheduling the base station to the specific FA selected by the terminal.

The operation of transmitting the CCH to the UE may include transmitting the first FA list and the second FA list to a subscriber station (SIB) of a broadcast control channel (SIB).

A method of allocating a radio resource according to an embodiment of the present invention includes: transmitting an SIB (system information blocks) to a terminal located in a coverage area of the base station; receiving a signal-to-interference plus (SINR) determining a group of a random access channel (RACH) preamble message based on interference information measured as a value of a noise ratio (RACH), transmitting the RACH Preamble message to the BS, Selecting an FA from a frequency assignment list according to a group, and allocating radio resources to the UE based on the specific FA.

The operation of determining the Group may further include defining Group C in the RACH Preamble message if the UE is currently interfered with.

A method of allocating a radio resource according to an embodiment of the present invention includes: transmitting an SIB (system information blocks) to a terminal located in a coverage area of the base station; A preamble message transmission, an operation in which the BS transmits a response to the RACH Preamble message to the UE, and an interference effect based on a current signal-to-interference plus noise ratio (SINR) Generating an interference base station list that the base station receives, an operation of the terminal including the interference base station list in a radio resource control (RRC) Connection Request message of an uplink (CC) common control channel (CCCH) Analyzing the interference base station list to select a specific FA from a frequency assignment (FA) list, Based on a specific FA it may include an operation of allocating radio resources to the MS.

Through the method proposed by the present invention, the communication system can measure the interference state of the current terminal and allocate the optimal resource by removing the interference using the information.

In addition, through the method proposed in the present invention, the communication system can provide a smooth wireless service to a corresponding user (or terminal) by allocating an optimal resource, and can also distribute a traffic load concentrated on a specific FA.

FIG. 1 is a diagram illustrating a form of measurement of surrounding radio interference and information transmission / reception in a communication system according to an embodiment of the present invention.
2 is a diagram illustrating a method of allocating radio resources based on base station information according to an embodiment of the present invention.
3 is a diagram illustrating a method of allocating radio resources based on interference status information of a UE according to an embodiment of the present invention.
4 is a diagram illustrating a method of allocating radio resources based on interference-based base station information of a UE according to an embodiment of the present invention.
5 is a diagram illustrating a method of operating a terminal according to FIG.
6 is a diagram illustrating a method of operating a terminal according to FIG.
FIG. 7 is a diagram illustrating a method of operating a terminal according to FIG.
8 is a view for explaining an example of a method of implementing a communication system according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate the understanding of the present invention, the same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted.

Throughout the specification, a terminal may be a wireless transmit / receive unit (WTRU), a user equipment (UE), a user terminal (UT), an access terminal (AT), a mobile station A mobile subscriber unit, a subscriber station (SS), a wireless device, or a mobile subscriber unit, and the like, And may include some or all of those functions.

Here, a desktop computer, a laptop computer, a tablet PC, a wireless phone, a mobile phone, a smart phone, a smart watch, such as a smart watch, a smart glass, an e-book reader, a portable multimedia player (PMP), a portable game machine, a navigation device, a digital camera, a digital multimedia broadcasting (DMB) A digital audio recorder, a digital audio player, a digital picture recorder, a digital picture player, a digital video recorder, a digital video player ) Can be used.

FIG. 1 is a diagram illustrating a form of measurement of surrounding radio interference and information transmission / reception in a communication system according to an embodiment of the present invention. A communication system according to an embodiment of the present invention may include a base station and a terminal.

Referring to FIG. 1, when a terminal exists in various base station coverage such as a heterogeneous network (HetNets) 100, at least one of the terminal or the base station transmits interference information about the surrounding radio waves Can be measured. In addition, the terminal or the base station can transmit / receive radio resources including the interference information to / from each other.

According to various embodiments, in the radio resource allocation method proposed by the present invention, a method of measuring interference information for surrounding radio waves and transmitting the interference information can be roughly divided into two methods. One of the above methods is a base station information based method and the other is a terminal information based method.

2 is a diagram illustrating a method of allocating radio resources based on base station information according to an embodiment of the present invention.

2, the base station 230 may generate frequency assignment (FA) information adaptively selected according to the presence or absence of interference of the terminal 210 served from the base station 230. The FA information may include an FA list 251 when interference exists and an FA list 253 when interference does not exist.

According to various embodiments, since it is difficult for the current base station 230 to intuitively grasp the interference information of the terminal 210 located in the coverage, the base station 230 transmits the FA information to the terminal 210, Information can be selected. In this regard, the base station 230 may transmit the FA information through a control channel (CCH). According to one embodiment, the base station 230 may transmit the FA information by including it in system information blocks (SIBs) of a broadcast control channel (BCCH) as in operation 271. [

According to various embodiments, the terminal 210 may map the SIB information to the interference information measured by interference or noise level (e.g., SINR) for the current signal. Accordingly, the UE 210 can select the FA information corresponding to the interference information among the FA list 251 when there is interference and the FA list 253 when interference does not exist.

In operation 273, the terminal 210 may transmit the selected FA information to the base station 230 via a random access channel (RACH). The base station 230 can schedule radio resources based on the selected FA information and allocate radio resources to the terminal 210. [

As described above, according to various embodiments, a method of allocating radio resources includes a first FA list that is selectable when the base station is in the coverage of the base station, and a second FA list that is selectable when there is no interference An operation in which the BS transmits the first FA list and the second FA list to the MS on a CCH basis, and the first FA list and the second FA list based on the interference information measured by the MS as a current SINR value, An operation of selecting a specific FA through a 2 FA list, an operation of the terminal transmitting the specific FA to the base station via the RACH, and an operation of allocating the radio resource by scheduling to the specific FA selected by the terminal . ≪ / RTI >

According to various embodiments, the operation of transmitting the CCH to the UE may include transmitting the first FA list and the second FA list to the terminal by including the list in the SIB of the BCCH.

According to various embodiments, in the radio resource allocation method, there is a terminal information based method as another method of measuring interference information for surrounding radio waves and transmitting the interference information. For example, the UE measures interference information of the neighbor base stations through the SINR, and can collect information on which base station is currently influenced by the interference, or from which base station the interference is received. The UE information based method can be divided into two types according to a method of transmitting collected interference information to a base station.

3 is a diagram illustrating a method of allocating radio resources based on interference status information of a UE according to an embodiment of the present invention.

3, the UE 310 may receive the SIB at operation 371 and forward the RACH Preamble message to the base station 330, as at operation 373. In this case, the UE 310 generates the interference information of the neighbor BS with the SINR value measured by the UE 310, and if the interference exists, the UE 310 can additionally define and transmit the Group C in the RACH Preamble message.

The method described above is a method of transmitting interference state information to the base station 330 whether or not the terminal 310 is currently receiving interference. The interference status information may be transmitted through the RACH Preamble message in the procedure in which the UE 310 registers the BS 330. [ In this regard, if the UE 310 is interfered with according to the result of collecting the interference information by the SINR, the RACH Preamble Group C may be transmitted to the Node B 330. [ Accordingly, when the base station 330 receives the RACH Preamble Group C message, it can estimate that the corresponding terminal 310 is currently receiving interference. In addition, the base station 330 may select FA information capable of minimizing interference in the FA list 350 and allocate radio resources to the terminal 310 based on the FA information.

As described above, according to various embodiments, a method of allocating radio resources includes a step in which a base station transmits an SIB to a terminal located in a coverage area of the base station, an RACH preamble based on interference information measured as a current SINR value, Determining a group of a message; transmitting the RACH Preamble message to the BS by the MS; selecting an FA from an FA list according to a group of the RACH Preamble message; And allocating radio resources to the UE based on the FA.

According to various embodiments, the operation of determining the Group may further include defining Group C in the RACH Preamble message when the UE is currently interfered with.

4 is a diagram illustrating a method of allocating radio resources based on interference-based base station information of a UE according to an embodiment of the present invention.

Referring to FIG. 4, the terminal 410 may receive the SIB at operation 471 and forward the RACH Preamble message to the base station 430, as at operation 473, as described above in FIG. However, as shown, instead of communicating the RACH Preamble Group C to correspond to the interference information of the neighbor base station in operation 473, the terminal 410 receives a response to the RACH Preamble message in operation 475, The base station 430 may generate base station information on which the current terminal 410 is affected by interference in the radio resource control connection request (RRC) connection information, such as 477, and transmit the base station information to the base station 430.

Unlike the method described with reference to FIG. 3, the method described above is a method in which a current terminal 410 generates a list of interference-affected base stations and transmits the generated information to the serving base station 430. 4, after receiving the RACH Preamble Response message from the BS 430, the MS 410 transmits an RRC Connection Request message of an uplink (UL) common control channel (CCCH) To the base station 430, including the list information. In this case, the serving base station 430 analyzes the interference base station list in the RRC Connection Request message of the UL CCCH, selects FA information capable of minimizing interference, and allocates radio resources to the terminal 410 based on the FA information .

As described above, according to various embodiments, a method of allocating a radio resource includes an operation in which a base station transmits an SIB to a terminal located in coverage of the base station, an operation in which the terminal transmits a RACH Preamble message to the base station, Transmitting a response to the RACH Preamble message to the UE, generating an interference BS list affected by the interference based on the current SINR value, and transmitting the interference BS list to the UL And transmitting the RRC Connection Request message included in the RRC Connection Request message of the CCCH to the BS. The BS analyzes the interference BS list and selects a specific FA from the FA list. And allocating resources.

5 is a diagram illustrating a method of operating a terminal according to FIG.

Referring to FIG. 5, in operation 510, the UE measures a SINR value of a neighbor BS and determines whether there is interference based on the SINR value. In operation 530, the terminal may receive FA information adaptively selectable according to the presence or absence of interference of the terminal from the base station. For example, the UE can receive the FA information transmitted on the control channel (CCH). According to one embodiment, the UE can receive the FA information in a form included in a system information block (SIB) of a broadcast control channel (BCCH).

In operation 550, the UE can select the FA information corresponding to the interference information by mapping the interference information measured based on the SINR value and the SIB information. In operation 570, the terminal may transmit the selected FA information to the base station through the RACH procedure. In operation 590, the UE may be provided with an optimal radio resource allocation from which interference is removed based on the selected FA information.

As described above, according to various embodiments, a method of allocating radio resources includes: measuring interference or noise level of signals from neighboring base stations and generating interference information corresponding to the measured values; Comprising: receiving an accessible frequency allocation list for each of interference conditions of a terminal from a serving base station; selecting specific frequency allocation information from the frequency allocation list based on the interference information; And an operation of allocating the radio resource based on the selected frequency allocation information from the base station.

According to various embodiments, the operation of receiving the frequency allocation list may include an operation in which the frequency allocation list is included in the system information block of the broadcast control channel.

According to various embodiments, the operation of selecting the specific frequency allocation information may include selecting the specific frequency allocation information so that interference from the neighbor base stations may be minimized.

6 is a diagram illustrating a method of operating a terminal according to FIG.

Referring to FIG. 6, in operation 610, the UE measures a SINR value of a neighbor BS and determines interference based on the SINR value. In operation 630, the UE may determine a RACH Preamble Group message based on the interference information measured with the SINR value. For example, the UE may additionally define and transmit Group A, Group B, or Group C to the RACH Preamble message depending on the presence or absence of the interference information. According to one embodiment, the UE can additionally define Group C in the RACH Preamble message when interference exists.

At operation 650, the terminal may send a RACH Preamble message to the base station. In this case, if the Group C exists in the RACH Preamble message, the BS can estimate that the UE is currently receiving interference, and can select the FA information capable of minimizing interference in the FA list. In operation 670, the terminal may be provided with an optimal radio resource allocation from which interference is removed based on the FA information from the base station.

As described above, according to various embodiments, a method of allocating radio resources includes: measuring interference or noise level of signals from neighboring base stations and generating interference information corresponding to the measured values; The method comprising the steps of: including information corresponding to the interference information in a specific frame; transmitting the specific frame to a serving base station; and receiving, from the base station, information corresponding to the interference information included in the specific frame, And an operation of allocating radio resources.

According to various embodiments, the act of including the information may include including specified information in the particular frame when the terminal is in an interfering state.

FIG. 7 is a diagram illustrating a method of operating a terminal according to FIG.

Referring to FIG. 7, in operation 710, the UE may measure a neighbor BS SINR value and generate eNB interference information based on the SINR value. The base station interference information may be interference base station list information to which the present terminal is subject to interference.

In operation 730, after transmitting the RACH procedure, the UE transmits the RRC Connection Request message of the UL CCCH including the BS interference information to the BS. In this case, the base station may analyze the base station interference information in the RRC Connection Request message of the UL CCCH, and may select the FA information capable of minimizing interference based on the analyzed information. At operation 750, the terminal may be provided with an optimal radio resource allocation from which interference is removed based on the FA information from the base station.

As described above, according to various embodiments, a method of allocating radio resources includes: measuring interference or noise level of signals from neighboring base stations and generating base station interference information based on the measured values; Transmitting the information to a serving base station via a common control channel, and receiving the radio resource from the base station based on the base station interference information.

According to various embodiments, the operation of generating the base station interference information may include an operation of including at least one base station information affected by the interference among the neighboring base stations in the base station interference information.

According to various embodiments, an operation of transmitting to the base station may include transmitting the base station interference information to a radio resource control connection request message.

8 is a view for explaining an example of a method of implementing a communication system according to an embodiment of the present invention. A communication system according to an embodiment of the present invention may include a base station and a terminal, and may be configured by hardware, software, or a combination thereof. For example, the communication system may be implemented in the computing system 1000 as in FIG.

8, a computing system 1000 includes at least one processor 1100, a memory 1300, a user interface input device 1400, a user interface output device 1500, (1600), and a network interface (1700).

The processor 1100 may be a central processing unit (CPU) or a memory device 1300 and / or a semiconductor device that performs processing for instructions stored in the storage 1600. Memory 1300 and storage 1600 may include various types of volatile or non-volatile storage media. For example, the memory 1300 may include a ROM (Read Only Memory) and a RAM (Random Access Memory).

Thus, the steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by processor 1100, or in a combination of the two. The software module may reside in a storage medium (i.e., memory 1300 and / or storage 1600) such as a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, You may. An exemplary storage medium is coupled to the processor 1100, which can read information from, and write information to, the storage medium. Alternatively, the storage medium may be integral to the processor 1100. [ The processor and the storage medium may reside within an application specific integrated circuit (ASIC). The ASIC may reside within the user terminal. Alternatively, the processor and the storage medium may reside as discrete components in a user terminal.

As described above, according to various embodiments, a radio resource allocation system includes a base station that allocates radio resources, and at least one terminal located in a coverage of the base station, And transmits the frequency allocation list to the terminal through a control channel. The terminal measures interference or noise level of a signal from neighboring base stations and generates interference information corresponding to the measured value, Selects the specific frequency allocation information from the frequency allocation list based on the interference information, and transmits the selected frequency allocation information to the base station, and the base station generates the radio resource based on the selected frequency allocation information And can be allocated to the terminal.

According to various embodiments, the base station may include the frequency allocation list in a system information block of a broadcast control channel and transmit the frequency allocation list to the terminal.

According to various embodiments, the terminal may select the specific frequency allocation information so that interference from the neighbor base stations may be minimized.

According to various embodiments, a radio resource allocation system includes a base station that allocates radio resources and at least one terminal located in a coverage of the base station, the terminal comprising: interference or noise The interference information corresponding to the measured value, the information corresponding to the interference information in a specific frame of the random access channel, and transmits the specific frame to the base station, And allocates the radio resource to the UE based on information corresponding to the interference information included in the interference information.

According to various embodiments, the terminal may include specified information in the specific frame when the terminal is in an interference state.

According to various embodiments, a radio resource allocation system includes a base station that allocates radio resources and at least one terminal located in a coverage of the base station, the terminal comprising: interference or noise And transmits the base station interference information to the base station through a common control channel, and the base station transmits the base station interference information to the terminal based on the base station interference information, Can be assigned.

According to various embodiments, the terminal may include at least one base station information affected by the interference among the neighbor base stations in the base station interference information.

According to various embodiments, the UE can transmit the RBAC message including the BS interference information in a radio resource control connection request message.

As described above, the base station operating method according to the present invention includes an operation of defining a connectable FA list for each interference state of the terminal, an operation of transmitting the list to the terminal through the control channel, An operation of measuring an SINR value from peripheral base stations and generating interference information by using the corresponding value, an operation of selecting an optimal radio resource among the FA lists provided from the base station based on the generated interference information, The mobile station may transmit the information to the base station in the initial access procedure, and may include a process of removing the interference based on the base station information and allocating the optimal radio resource.

The process of removing the interference and allocating the optimal radio resource based on the UE interference information is as follows. First, the UE generates interference information from the neighbor BS using the SINR value. In order to transmit the generated interference information to the BS, When Group C is defined in the RACH preamble, which is a connection procedure, and an interference occurs, the corresponding base station transmits a corresponding message to the base station. When the corresponding base station receives Group C from the RACH preamble from the mobile station, And allocating an optimal radio resource that can be removed. In addition, the resource allocation process is performed in the following manner. That is, the UE generates interference information using the SINR value from the neighbor BS. The UE generates the interference information by using the Interference Info (RRC) The base station analyzes the Interference Info of the RRC Connection Request message and selects a radio band interval in which the interference of the corresponding station can be removed, Lt; RTI ID = 0.0 > of < / RTI >

Claims (21)

A method for allocating radio resources,
Measuring interference or noise levels of signals from neighboring base stations and generating interference information corresponding to the measured values;
Receiving from the serving base station via the control channel a connectable frequency allocation list for each of the interference states of the terminals;
Selecting specific frequency allocation information from the frequency allocation list based on the interference information;
Transmitting the selected frequency allocation information to the base station; And
And allocating the radio resource based on the selected frequency allocation information from the base station. The method according to claim 1,
The operation of receiving the frequency allocation list
And receiving the frequency allocation list in a system information block of a broadcast control channel. The method according to claim 1,
The operation of selecting the specific frequency allocation information
And selecting the specific frequency allocation information so that interference from the neighbor base stations is minimized. A method for allocating radio resources,
Measuring interference or noise levels of signals from neighboring base stations and generating interference information corresponding to the measured values;
Including information corresponding to the interference information in a specific frame of the random access channel;
Transmitting the specific frame to a serving base station; And
And receiving the radio resource from the base station based on information corresponding to the interference information included in the specific frame. The method of claim 4,
The act of including the information
And including the specified information in the specific frame if the terminal is in an interference state. A method for allocating radio resources,
Measuring interference or noise levels of signals from neighboring base stations and generating base station interference information based on the measured values;
Transmitting the base station interference information to a serving base station through a common control channel; And
And allocating the radio resource based on the base station interference information from the base station. The method of claim 6,
The operation of generating the base station interference information
And including at least one base station information affected by the interference among neighbor base stations in the base station interference information. The method of claim 6,
The operation of transmitting to the base station
And transmitting the radio resource control connection request message including the base station interference information to the radio resource control connection request message. A base station for allocating radio resources; And
And at least one terminal located in a coverage of the base station,
The base station generates a frequency allocation list connectable to the terminal according to the interference state, transmits the frequency allocation list to the terminal through a control channel,
The UE measures interference or noise level of signals from neighbor base stations, generates interference information corresponding to the measured value, selects specific frequency allocation information from the frequency allocation list based on the interference information, Transmits the selected frequency allocation information to the base station,
And the BS allocates the radio resource to the MS based on the selected frequency allocation information. The method of claim 9,
The base station
And the frequency allocation list is included in a system information block of a broadcast control channel and transmitted to the terminal. The method of claim 9,
The terminal
And selecting the specific frequency allocation information so that interference from the neighbor base stations can be minimized. A base station for allocating radio resources; And
And at least one terminal located in a coverage of the base station,
Wherein the terminal measures interference or noise level with respect to signals from neighboring base stations, generates interference information corresponding to the measured value, includes information corresponding to the interference information in a specific frame of the random access channel, Frame to the base station,
Wherein the base station allocates the radio resource to the terminal based on information corresponding to the interference information included in the specific frame. The method of claim 12,
The terminal
And the specified information is included in the specific frame when the terminal is in an interference state. A base station for allocating radio resources; And
And at least one terminal located in a coverage of the base station,
The terminal measures interference or noise level of signals from neighbor base stations, generates base station interference information based on the measured values, transmits the base station interference information to the base station through a common control channel,
Wherein the base station allocates the radio resource to the mobile station based on the base station interference information. 15. The method of claim 14,
The terminal
And includes at least one base station information affected by the interference among neighbor base stations in the base station interference information. 15. The method of claim 14,
The terminal
And transmits the radio resource control connection request message including the base station interference information to the radio resource control connection request message. A method for allocating radio resources,
Generating a first FA selection list and a second FA list that are selectable when there is no interference, when the base station is located in coverage of the base station;
The BS transmitting the first FA list and the second FA list to the MS through a control channel (CCH);
Selecting a specific FA through the first FA list and the second FA list based on interference information measured by the terminal as a current signal-to-interference plus noise ratio (SINR) value;
The terminal transmitting the specific FA to the base station via a random access channel (RACH); And
And allocating the radio resource by scheduling to the specific FA selected by the subscriber station. 18. The method of claim 17,
The operation of transmitting the CCH to the UE
And transmitting the first FA list and the second FA list to system information blocks (SIBs) of a BCCH (broadcast control channel). A method for allocating radio resources,
A base station transmitting SIB (system information blocks) to a terminal located in a coverage of the base station;
Determining a group of a random access channel (RACH) preamble message based on interference information measured by a current SINR (signal-to-interference plus noise ratio) value;
The UE transmitting the RACH Preamble message to the BS;
Selecting a specific FA from a frequency assignment list according to a group of the RACH Preamble message; And
And allocating a radio resource to the mobile station based on the specific FA. The method of claim 19,
The operation of determining the Group
And further defining a Group C in the RACH Preamble message if the UE is currently interfered with. A method for allocating radio resources,
A base station transmitting SIB (system information blocks) to a terminal located in a coverage of the base station;
The terminal transmitting a random access channel (RACH) preamble message to the base station;
The BS transmitting a response to the RACH Preamble message to the MS;
Generating an interference base station list that is affected by interference based on a current signal-to-interference plus noise ratio (SINR) value;
The UE includes the interference base station list in a radio resource control (RRC) connection request message of a common control channel (CCCH) and transmits the association request message to the base station;
The base station analyzing the interference base station list and selecting a specific FA from a frequency assignment list; And
And allocating a radio resource to the mobile station based on the specific FA.

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