WO2007048304A1 - Méthode, système et terminal pour collecter et rapporter des informations de source d’interférence - Google Patents

Méthode, système et terminal pour collecter et rapporter des informations de source d’interférence Download PDF

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Publication number
WO2007048304A1
WO2007048304A1 PCT/CN2006/002293 CN2006002293W WO2007048304A1 WO 2007048304 A1 WO2007048304 A1 WO 2007048304A1 CN 2006002293 W CN2006002293 W CN 2006002293W WO 2007048304 A1 WO2007048304 A1 WO 2007048304A1
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WO
WIPO (PCT)
Prior art keywords
message
broadcast message
terminal
receiving
information
Prior art date
Application number
PCT/CN2006/002293
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English (en)
French (fr)
Inventor
Quanbo Zhao
Zhong Pan
Xuyong Wu
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to CN2006800117998A priority Critical patent/CN101156481B/zh
Priority to EP06790948A priority patent/EP1942687B1/en
Publication of WO2007048304A1 publication Critical patent/WO2007048304A1/zh
Priority to US12/048,498 priority patent/US8014785B2/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network

Definitions

  • the present invention relates to a broadband wireless access technology, and more particularly to a method, system and terminal for collecting terminal interference source information in a coexistence system. Background technique
  • BWA Broadband Wireless Access
  • the use of wireless resources for broadband metro access has a strong vitality and market space.
  • the spectrum resources of the wireless are very valuable.
  • BS Base Station
  • BS Base Station
  • Neighbor BS refers to a base station that has a common coverage area and a valid coverage area in the common coverage area.
  • BS1 and BS2 are geographically close, and the BS1 and BS2 stations are each in the coverage area of the other party, since there is no terminal in the common coverage area and there is no serious interference to the other party's wireless network, it is not called Neighboring station.
  • the overlap area between BS2 and BS3 is relatively small, each of them is not in the coverage area of the other party, but there is a valid terminal in the overlapping coverage area, which constitutes interference to the other party's wireless network. Therefore, BS2 and BS3 are referred to herein as neighboring stations. .
  • the frame timing of the transmission and reception signals between the base stations is often strictly aligned, so that the geographically adjacent stations will not cause mutual interference between the transmission and reception, such as BS1 and BS2 shown in FIG. 1, if BS1 is transmitting.
  • BS1 When BS2 is just receiving, BS1 will cause serious interference to the signal that BS2 receives the subordinate terminal, so each base station must ensure that the transmission and reception are synchronized with each other.
  • the negotiation between neighboring stations is especially important when solving the coexistence problem.
  • the base station When allocating air interface resources, the base station will use the competitive air interface resources (such as time period, subchannel, etc.) to send data to the terminal in the interference-free area.
  • the competitive air interface resources such as time period, subchannel, etc.
  • exclusive air interface resources such as time periods, subchannels, etc.
  • the coexisting base station completes the startup of the newly activated base station (SBS IBS, where: SBS, Startup Base Station; IBS, Initializing Base Station) in the vicinity when the base station is activated, by the running neighboring station.
  • SBS IBS Start Base Station
  • IBS Initializing Base Station
  • WBS/OBS WBS, Working Base Station
  • OBS Operating Base Station
  • the IBS sends an IP address broadcast (IPBC, IP Address Broadcast) message through the air interface, and broadcasts the necessary information such as the IP address to the terminal (SS_A, etc.) of the neighboring network in the coverage area;
  • IPBC IP Address Broadcast
  • each terminal that receives the information through the air interface along with the information including the terminal's own identity and status, is carried in the victimized message through the air interface and sent to the OBS to which it belongs;
  • the OBS collects the reporting information of each terminal, and updates the related information to the local coexistence information database (DB, Database);
  • the OBS After updating the local coexistence information database, the OBS sends the relevant information in the contact information, identification and coexistence information database to the IBS through the wired network according to the IBS IP address information;
  • the IBS After receiving the OBS information through the wired network, the IBS obtains relevant information and updates its own coexistence information database;
  • the IBS responds to the OBS according to the IP address obtained by the OBS and sends the other information according to the IP address;
  • the OBS performs database update and subsequent processing according to other information in the IBS message.
  • the OBS can establish coexistence database information, including neighbor base station information and subordinate terminal information, by using interference source information reported by all terminals. Examples of information on coexistence databases are shown in Tables 1 and 2: Table 1. List of neighboring base station information in the coexistence database
  • the IBS in the initial state uses the air interface to send a broadcast message to the neighboring terminal of the neighboring station in the coverage area.
  • the broadcast message includes the contact information of the IBS, such as IP address information or other information, and the contact mode must uniquely correspond to the IBS base station.
  • the broadcast message is sent frame by frame, and the frame format includes: a frame start flag (SOF, Start of Frame), a load (payload), a cyclic check code (CRC, Cyclic Redundancy Check), and a frame end flag (EOF).
  • the payload generally carries the IP address information of the transmitting base station
  • the cyclic check code is used to verify the integrity and correctness of the message.
  • the message may adopt a frame start flag SOF + 32 bit IP address + an 8-bit cyclic check code + a frame end flag EOF.
  • a complete broadcast message may be sent in segments according to the physical frame format, and only a portion of the messages will be sent in each eligible physical frame. As shown in FIG. 4, for example, a message is transmitted every N frames from the Mth frame, and n frames are transmitted in total, and n frames constitute a complete broadcast message frame.
  • the "same batch" terminal in an IBS coverage area will receive the above broadcast message frame at the same time.
  • the present invention provides a method, a system, and a terminal for collecting and reporting interference source information, so as to solve the problem that the interference source information cannot be collected when the terminal receives an error in the broadcast message of the newly activated neighboring station.
  • the present invention provides the following technical solutions:
  • a method for collecting and reporting interference source information includes the following steps:
  • Each terminal receives a broadcast message carrying the NBS identification information sent by the neighboring station NBS, and the terminal that can correctly receive the broadcast message and the reception time information are carried in the victim report message and sent to the own base station OBS, and the terminal receiving the error is subject to
  • the interference report message carries the reception time information
  • the OBS records the receiving time information reported by each terminal, and records the NBS identification information carried in the broadcast message reported by the terminal as the interference source identifier of the terminal; and then, according to the association relationship of the receiving time information, from the already recorded interference source.
  • the interference source identifier of the terminal that does not report the broadcast message is determined and recorded.
  • the correct receiving includes demodulating the broadcast message and verifying the correctness; the receiving error includes failing to adjust the broadcast message or verifying the error after demodulation.
  • the broadcast message is sent in one message block or divided into at least two message blocks, and: when the terminal can solve When the broadcast message is adjusted, the terminal sends a disturbed message after demodulating and verifying a broadcast message;
  • the terminal When the terminal is unable to demodulate the broadcast message, the terminal receives a broadcast message block each time to send a disturbed message.
  • the receiving time information is a frame sequence number of a physical frame including a broadcast message block, or a receiving time of a broadcast message block.
  • the received time information reported by the terminal capable of demodulating the broadcast message is a frame sequence number of a physical frame including one of the broadcast message blocks, or one of the broadcasts The time the message block was received.
  • the one of the broadcast message blocks refers to the first message block or the last message block of the broadcast message.
  • the receiving time information is a frame sequence number of a physical frame
  • the determining method of the association relationship is:
  • the OBS calculates the number of message blocks included in the broadcast message according to the length of the broadcast message reported by the correct terminal.
  • the frame sequence number corresponding to all the message blocks included in the broadcast message is determined according to the frame sequence number reported by the same terminal and the physical frame frame interval of the adjacent broadcast message block. And when the frame sequence number reported by the terminal that does not report the broadcast message is included in the sequence number set, it is determined that the association relationship exists.
  • the determining method of the association relationship is:
  • the OBS calculates the number of message blocks included in the broadcast message according to the length of the broadcast message reported by the correct terminal.
  • the time range of receiving all the message blocks including the broadcast message is determined according to the reception time reported by the same terminal and the time difference between receiving the adjacent broadcast message blocks;
  • the reception time reported by the terminal that has not reported the broadcast message is included in the time range or the difference between the end values of the range is within the set threshold, it is determined that the association relationship exists.
  • the method further includes: the OBS returning the interference source information of the terminal determined according to the association relationship to the terminal that receives the error, and is configured to instruct the terminal to discard the broadcast message from the corresponding NBS.
  • the method further includes the OBS updating the interference source information of each terminal to the coexistence database.
  • the method further includes the OBS returning its own identification information to the BS, and the OBS-related information recorded in the coexistence database.
  • the identification information is IP address information.
  • the terminal performs correctness verification according to the check code carried in the broadcast message.
  • the terminal that checks the error also carries the receiving error indication information in the report message.
  • the error indication information further includes a cause value that causes the error to receive the broadcast message.
  • a system for collecting and reporting interference source information includes at least one terminal device and a base station to which the at least one terminal device belongs, where:
  • the terminal device includes a broadcast message receiving unit, a broadcast message processing unit, and a scrambled message sending unit, and the broadcast message receiving unit receives a broadcast message carrying the NBS identification information and sent by the neighboring station NBS of the owning base station OBS, the broadcast After receiving the broadcast message, the message processing unit generates a victim report message carrying the broadcast message and the received time information, and generates a victim report message carrying the received time information, and sends the received message to the OBS through the victim report message sending unit. Disturb the report message;
  • the base station to which the terminal belongs includes a victim report message receiving unit and a victim report message processing unit, and the victim report message receiving unit receives the victim report message sent by each terminal, and the victim report message processing unit reports the correctly received terminal.
  • the NBS identification information carried in the broadcast message is recorded as the interference source identifier of the terminal, and is searched from the already recorded interference source according to the association relationship of the received time information of the neighboring station NBS broadcast message reported by each terminal.
  • the interference source identifier of the terminal of the message is recorded as the interference source identifier of the terminal, and is searched from the already recorded interference source according to the association relationship of the received time information of the neighboring station NBS broadcast message reported by each terminal.
  • the broadcast message processing unit includes:
  • a demodulation subunit connected to the broadcast message receiving unit, demodulating the broadcast message;
  • a check subunit connected to the demodulation subunit, and verifying the demodulated broadcast message;
  • the victim message generating subunit is respectively connected to the receiving time determining subunit, the demodulating subunit, the syndrome unit, and the victim reporting message sending unit, and when the broadcast message can be demodulated and verified correctly, generating and carrying The broadcast message and the received report message of the received time information; when the broadcast message cannot be demodulated or the error is verified after demodulation, a disturbed report message carrying the received time information is generated.
  • the disturbed report message processing unit includes: The receiving time extraction sub-unit extracts the receiving time information of the neighboring station broadcast message carried in the received report message reported by each terminal device, and records the IBS identification information carried in the broadcast message reported by the correct terminal as the interference source of the terminal. Identification
  • the association determination sub-unit searches for the interference source identifier of the terminal that has not reported the broadcast message from the already recorded interference source according to the association relationship of the reception time information.
  • the victim reporting message processing unit further includes: a coexistence database, respectively connected to the receiving time extraction subunit and the association determining subunit, and storing interference source labels of each terminal
  • the present invention also provides the above terminal device and base station.
  • the time-stamp is set by the terminal to report the interference source message, so that the terminal can correctly receive the broadcast message of the interference source and report the interference source information to the OBS, and the OBS can use the time identifier. Relevance, confirming the interference information of the terminal that does not correctly receive the broadcast message, improving the success rate of the single broadcast message of the newly activated base station to the neighbor station correctly counting the state of the interfered terminal, reducing the terminal receiving broadcast due to accidental factors or interference After the message is incorrect, the base station collects the missing probability of the subordinate terminal interference information, and the implementation mechanism of the method of the present invention is simple;
  • the base station can determine the interference according to the information of other reported terminals as long as it can monitor the interference state of the air interface in a specific time range and report it as required.
  • the state and source of interference reduce the minimum requirements for device changes to meet coexistence, making it convenient for transition-compatible terminals.
  • Figure 1 is a schematic diagram of a neighboring station
  • FIG. 2 is a schematic diagram of a process in which an OBS collects a terminal state interfered by an IBS in the local network and interacts with the IBS in the prior art;
  • 3 is an example of an NBS broadcast message dedicated frame format carrying coexistence information
  • 4 is a schematic diagram of a frame-by-frame transmission of a broadcast message
  • FIG. 5 is a schematic flowchart of the OBS collecting the state of the terminal interfered by the BS in the local network and interacting with the NBS according to the present invention
  • FIG. 6 is a schematic diagram of a system of Embodiment 1;
  • FIG. 7 is a schematic diagram of various situations that occur when the terminal receives a broadcast message on a frame-by-frame basis according to Embodiment 1 of the present invention
  • FIG. 8 is a schematic diagram of a main structure of a system for collecting and reporting interference source information according to the present invention, which includes the terminal device of the present invention. And the main structure diagram of the base station;
  • FIG. 9 is a schematic diagram of a specific structure of a broadcast message processing unit in the terminal device shown in FIG. 8.
  • FIG. 10 is a schematic diagram of a specific structure of a victim message reporting unit in the base station shown in FIG. detailed description
  • the method of the present invention is based on the prior art, and has multiple terminals for a common coverage area between a neighboring station NBS (including a newly activated neighboring station SBS/IBS and a working neighboring station TOS/OBS) and an OBS.
  • NBS including a newly activated neighboring station SBS/IBS and a working neighboring station TOS/OBS
  • OBS uses the correlation feature between the time information of the interference, from other
  • the interference source information of the terminal is determined and statistically recorded in the interference source information on the terminal.
  • the flow of the interactive terminal interference source information between the OBS, the NBS, and the terminals of each SS according to the present invention is as shown in FIG. 5, and includes the following steps:
  • the SI and the NBS broadcast the IP address information to the terminal located in the coverage according to the physical frame format, and the broadcast message is allocated to the size of the time slot for the broadcast message according to the format of the physical frame, possibly as a message block. Or split into multiple message blocks to be sent in a physical frame, each physical frame carrying only one message block;
  • the terminal located in the coverage of the NBS receives the broadcast message block by block through the air interface, and performs the following operations:
  • the terminal capable of demodulating the broadcast message frame determines whether a complete message is received and the correctness is verified, for example, the verification is correct. Then record the complete message and the start time identifier of the first message block received; when the terminal cannot demodulate the broadcast message frame or can demodulate but check the error, the message is received.
  • the error indication and the start time identifier of the first message block are received; the recorded information is carried along the air interface in the victim report message together with the information including the identity and status of the terminal, and sent to the associated
  • the terminal when the terminal is capable of demodulating the broadcast message, the terminal sends a disturbed report message after demodulating and verifying a broadcast message; when the terminal cannot demodulate the broadcast message, the terminal Receiving a broadcast message block to send a disturbed report message, and discarding the received broadcast message block;
  • the receiving time information may be a frame sequence number of the physical frame that the terminal receives the broadcast message block, or a receiving time that is reported by the terminal that receives the broadcast message block;
  • the time information that can be demodulated and reported by the terminal of the broadcast message is a frame sequence number of a physical frame including one of the broadcast message blocks; or
  • the receiving time of one of the broadcast message blocks is generally conveniently implemented by selecting to record the first or last message block;
  • the check code included in the message may be a cyclic check code, a parity check code, etc., and the terminal checks the integrity and correctness of the message according to the check code, and may also report the specificity after receiving the error.
  • the error type information the error type generally includes: the correct frame start tag is not received, the correct frame end tag is not received, the frame length error, the message content CRC check error, etc.; the error type information can be set by carrying The cause value is reported.
  • the associated OBS collects the reporting information of each terminal, determines the interference source of the terminal that receives the error according to the relationship of the time identifier and the reported information, and updates the related information to the local coexistence database;
  • the OBS records the report information of all the coexisting base stations received in a certain period of time (such as the set update coexistence data period or a set time from the start of receiving the first report message), and the indication is
  • the information is recorded to determine the source of interference of the terminal.
  • the valid range refers to the sequence number range or the receiving time range of all physical frames that receive a broadcast message.
  • the determination of the effective range is used to determine whether the association relationship exists.
  • the reception time information is the sequence number of the physical frame
  • the effective range is a frame sequence number set of all message blocks including the broadcast message
  • the determination method of the association relationship includes the following Steps:
  • the OBS calculates the number of message blocks included in the broadcast message according to the length of the broadcast message reported by the correct terminal, when the number of message blocks is 1, then proceeds to step 4, otherwise proceeds to step 3;
  • the valid range is the time range of receiving all the message blocks included in the broadcast message, and considering the difference between the receiving times of different terminals, the relationship may be different.
  • the method includes the following steps:
  • the OBS calculates the number of message blocks included in the broadcast message according to the length of the broadcast message reported by the correct terminal, and when the number of message blocks is 1, the process proceeds to step 4, otherwise continues 2;
  • the base station can determine the state of interference and the interference source according to the information of other reported terminals, and reduce the minimum requirements for changing the device to meet the coexistence, which is convenient for the transition period to be compatible with various terminals.
  • the method may further include: sending, by the S3a, the feedback message to the corresponding terminal that does not report the broadcast message, and notifying the terminal, according to the interference source information determined by the association relationship, after the terminal receives the feedback message, if the terminal receives the feedback message, If the broadcast message of the same NBS is discarded, the broadcast message is discarded and is not reported, thereby saving uplink bandwidth.
  • the base station OBS updates the local coexistence number database
  • the IP address, the identifier, and the database related information are sent to the NBS through the wired network according to the IP address information of the NBS reported by the terminal;
  • the NBS receives the OBS information acquisition relevant part through the wired network and updates its own coexistence database
  • the NBS responds to the OBS according to the IP address of the other party obtained in the message sent by the OBS, and attaches other information to itself in the message sent to the OBS;
  • the OBS performs database update and subsequent processing according to other information in the NBS message.
  • the starting base station IBS faces multiple geographically similar base stations: 0BS1
  • OBS2 where OBS1, OBS2 and NBS are neighboring stations, terminals in the common coverage area of OBS1 and NBS have A, B, and C, and terminals in the common coverage area of OBS2 and BS have I, and terminal G is in coverage of base stations OBS1 and OBS2.
  • the other terminals D/E/F are not in the overlapping area between the base stations.
  • FIG. 7 a schematic diagram of various situations that occur when a terminal receives a broadcast message frame by frame
  • the first line indicates a message block sent
  • the other lines indicate reception status, where a check mark indicates correct reception, and a wrong number indicates reception error.
  • the missing part indicates that the message block is lost.
  • the second line indicates complete correct reception
  • the second message block in the third line belongs to the reception error
  • the fourth line does not receive the first message block
  • the last line indicates that the terminal cannot demodulate.
  • Dedicated broadcast message frame When the terminal receives a broadcast message incorrectly, it may be a decoding error or the first message block with the correct start tag. The terminal can only judge the interfered information and report the reported message with the correct indication after correctly decoding each message and assembling the verification. If the decoding error or partial message block is not detected, the terminal can only report the band. A message with an error indication.
  • A, B, and C terminals in the common coverage area of IBS and OBS1.
  • the IBS initiates the broadcast message. Only A receives the correct frame information, and 8, C receives the wrong frame information.
  • B is the error case 1 shown in the above figure
  • C is the error case 2
  • the A, B, and C terminals record the current time identifier (such as the current FSN) of the received IBS broadcast message, and load the IBS broadcast information (payload).
  • the correct or incorrect flag, the time identifier of the received IBS broadcast message (such as the current FSN) is reported to the associated base station OBS1 through the air interface together with the information including the identity and status of the terminal.
  • the time identifier recorded by the terminal may be an FSN carrying a frame start flag (SOF) or an end of frame flag (EOF), or may carry a reception time of a start flag (SOF) frame or an end marker (EOF) frame.
  • SOF frame start flag
  • EEF end marker
  • OBS1 will receive the information reported by the A, B, and C terminals for recording. Examples of temporary storage information are shown in Table 3:
  • the receiving correct or error flag set in the OBS message reported by the terminal in Table 3 above may be an independent label, such as a single-bit or multi-bit identifier, such as T for correct, '0 for error; or '11 for Correct, 10 indicates error; can also be expressed in other ways, such as using the contact address of the interference source, for example, using an IP address that is not likely to appear in this table under normal conditions, such as 255.255.255.255 indicating an error.
  • the OBS marks in Table 3 according to the identification information for example, the correctly received mark is OK, the error received mark is NOK, and the terminal marked as 0K directly updates the interference source information to the database, for the item marked as NOK, Find the interference source corresponding to the same or FSN eligible OK item in the temporary table according to the time identifier.
  • the terminals of the messages B and C are the same as the terminals A, that is, the FSN identifiers are M, and M+N...M+(nl)N are all associated with the identifier M.
  • the receiving time is the identification information
  • the receiving times of the message blocks 1, 2...n are all associated time information.
  • the calculation method of the associated time information is similar, and will not be described here.
  • the present invention is based on the above method, and provides a system for collecting and reporting interference source information, including: at least one terminal device 100 and a base station 200 to which each terminal device 100 belongs, where:
  • the terminal device 100 includes: a broadcast message receiving unit 101, a broadcast message processing unit 102, and a scrambled message sending unit 103;
  • the broadcast message receiving unit 101 receives the broadcast message carrying the NBS identification information and sent by the neighboring station NBS of the owning base station OBS;
  • the broadcast message processing unit 102 determines that the correct reception (capable of demodulating the broadcast message and verifying correctly) generates a disturbed report message carrying the broadcast message and the reception time information after the broadcast message, and receives an error (the broadcast message cannot be demodulated or solved)
  • the spoofed message is sent to the OBS by the spoofed message sending unit 103.
  • the base station 200 to which the terminal belongs includes: the hacked message receiving unit 201 And the disturbed report message processing unit 202;
  • the received report receiving unit 201 receives the disturbed report message sent by each terminal;
  • the scrambled report processing unit 202 records the BS identification information carried in the broadcast message reported by the terminal that is correctly verified as the interference source identifier of the terminal, and associates with the receiving time information of the neighboring station NBS broadcast message reported by each terminal. The relationship searches for the interference source identifier of the terminal that has not reported the broadcast message from the already recorded interference sources.
  • a structure of the broadcast message processing unit 102 may specifically include: Receiving time determining subunit 1021, connecting broadcast message receiving unit 101, determining a receiving time of the broadcast message;
  • the demodulation subunit 1022 is connected to the broadcast message receiving unit 101 to demodulate the broadcast message; the check subunit 1023 is connected to the demodulation subunit 1022, and the demodulated broadcast message is checked; the scrambled message generation subunit 1024 is connected respectively.
  • the unit 1022 is unable to demodulate the broadcast message, it sends a trigger signal to the victim message generation subunit 1024, and the check subunit
  • the corresponding trigger signal is sent to the victim message generation subunit 1024;
  • the victim message generation subunit 1024 generates a victim report message carrying the broadcast message and the reception time information when the broadcast message can be demodulated and corrected; when the broadcast message cannot be demodulated or the error is verified after demodulation, the generated message A disturbed report message carrying the reception time information.
  • a structure of the victimized message processing unit 202 may include: a receiving time extraction sub-unit 2021, which extracts the neighboring station broadcast message receiving time information carried in the victim reporting message reported by each terminal device. , will be verified in the broadcast message carried by the correct terminal
  • the IBS identification information is recorded as the interference source identifier of the terminal
  • the association determining unit 2222 searches for an interference source identifier of the terminal that has not reported the broadcast message from the already recorded interference source according to the association relationship of the received time information;
  • the coexistence database 2023 is connected to the reception time extraction subunit 2021 and the association determination subunit 2022, respectively, and stores the interference source identification information of each terminal.

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Description

一种干扰源信息收集上报方法、 系统及终端 技术领域
本发明涉及宽带无线接入技术， 特别涉及共存性系统中， 终端干扰源信 息的收集上艮方法、 系统及终端。 背景技术
随着宽带无线接入（BWA, Broadband Wireless Access )技术的蓬勃发展， 利用无线资源开展宽带城域接入具有很强的生命力和市场空间。 与此同时， 无线的频谱资源非常宝贵， 特别是在没有很好规划区域或没有许可的频段， 往往会在相同的信道有多个基站（BS, Base Station )运行， 导致所属系统的 相互干扰。 为了协调同频段下各设备之间的共存， 尤其是免许可 ( License-Exempt )频段的设备共存， 需要建立一些设备间的共存机制。
首先， 需要说明的是， 邻站（Neighbor BS )在本文是指有共同覆盖区域， 且共同覆盖区域中含有有效终端的基站。 如图 1所示， BS1和 BS2虽然地理 很近， 且 BS1和 BS2站点本身各自都在对方的覆盖区域， 但由于共同覆盖区 域中没有终端， 没有对对方无线网络造成严重干扰， 所以不称为邻站。 而 BS2 和 BS3间虽然交叠区域比较小， 各自都不在对方的覆盖区域， 但交叠覆盖区 域中有有效终端， 构成对对方无线网络造成干扰， 所以 BS2和 BS3在本文中. 称为邻站。
共存性系统中， 往往要求各基站间的发送接收信号帧定时严格对齐， 这 样可以保障地理相近的站点间不会造成收发相互的干扰，例如图 1所示的 BS1 和 BS2，如果 BS1在发的时候 BS2正好在收，则 BS1会对 BS2接收下属终端 的信号造成严重的干扰， 因此各基站间必须保证收发的相互同步。
邻站之间相互进行协商的工作在解决共存问题时尤其重要， 在分配空口 资源时， 基站将利用有竟争的空口资源 （如时间段、 子信道等）将数据发送 到无干扰区域的终端， 而利用独享的空口资源 （如时间段、 子信道等） 向受 干扰区域的终端发送数据。
对于正在运行的基站就需要时刻知道终端受干扰的状态， 需要了解每个 终端是否受干扰以及受哪些基站干扰， 并且在周围有新的邻站启动的时候及 时更新终端受干扰的信息。
如图 2所示， 共存性基站在附近有基站启动的情况下， 完成新启动基站 ( SBS IBS, 其中： SBS, Startup Base Station; IBS, Initializing Base Station ) 初始化过程中， 由正在运行的邻站（WBS/OBS, 其中： WBS, Working Base Station; OBS, Operating Base Station )信息搜集并通知新启动基站本网受新 启动基站干扰的状态信息， 具体流程包括如下步骤：
1、 IBS通过空口发送 IP地址广播（IPBC, IP Address Broadcast )消息， 将 IP地址等必要信息广播给覆盖范围内的相邻网络的终端 ( SS_A等等）；
2、 各个通过空口收到该信息的终端在收到该信息后将其连同含有终端自 身身份及状态的信息一同通过空口携带在受扰上报消息中发送给所属的 OBS;
3、 OBS搜集各终端的上报信息， 并将相关信息更新到本地的共存性信息 数据库（DB, Database );
4、 OBS更新完本地的共存性信息数据库后通过有线网根据 IBS的 IP地 址信息将自己的联系方式、 标识和共存性信息数据库中的相关信息发送给 IBS;
5、 IBS通过有线网收到 OBS的信息后获取相关信息更新自己的共存性信 息数据库；
6、 IBS根据 OBS发来消息中获取的对方 IP地址并根据该 IP地址向 OBS 进行应答， 在应答消息中附带自身其他的信息；
7、 OBS根据 IBS的消息中的其他信息进行数据库更新及后续处理。
OBS通过对所有终端上报的干扰源信息， 可以建立共存性数据库信息， 包括相邻基站信息和下属终端信息等。共存性数据库的信息示例如表 1和表 2 所示： 表 1.共存性数据库中的相邻基站信息列表
Figure imgf000005_0001
表 2.共存性数据库中的下属终端信息列表
Figure imgf000005_0002
处于初始化状态的 IBS利用空口向覆盖范围内的邻站下属终端下发广播 消息， 广播消息中包含 IBS的联系方式， 例如 IP地址信息或其他信息， 该联 系方式必须与 IBS基站唯一对应。 如图 3所示， 广播消息逐帧发送， 帧格式 包括：帧起始标志（ SOF, Start of Frame )、负载（ Payload )、循环校验码 ( CRC, Cyclic Redundancy Check )、 帧结束标志 （ EOF, End of Frame ), 负载中一般 携带发送基站的 IP地址信息， 循环校验码用于对消息的完整性和正确性进行 校验。以承载 IPv4的 32位地址为例，该报文可以采用帧起始标志 SOF + 32bitIP 地址 + 8位循环校验码 +帧结束标志 EOF。
一个完整广播消息可能会根据物理帧格式分段发送， 每个符合条件的物 理帧内会只发送一部分消息。 如图 4所示， 例如从第 M帧开始每 N帧发送一 块消息， 共发送 n帧， n帧组成一个完整的广播消息帧。 一个 IBS覆盖区域内 的 "同批" 终端会同时收到上述广播消息帧。
当 IBS和 0BS之间的共同覆盖区域存在多个终端时， 可能出现部分收到 广播信号的终端由于受其他信号干扰或其他的原因没有正确收到完整的广播 消息，则无法向其所属 OBS正确上报所接收的消息，从而导致 OBS无法获知 并完整统计记录受到 IBS干扰的终端信息。 发明内容 本发明提供一种干扰源信息的收集上报方法、 系统及终端， 以解决现有 技术中终端接收新启动邻站的广播消息发生错误时， 无法收集上报干扰源信 息的问题。
为解决上述技术问题， 本发明提供如下技术方案：
一种干扰源信息的收集上报方法， 包括如下步驟：
各终端接收邻站 NBS发送的携带有 NBS标识信息的广播消息，能够正确 接收的终端将所述广播消息和接收时间信息携带在受扰上报消息中发送给所 属基站 OBS, 接收错误的终端在受扰上报消息中携带接收时间信息；
OBS记录各终端上报的接收时间信息， 并将接收正确的终端上报的广播 消息中携带的 NBS标识信息记录为该终端的干扰源标识； 然后根据接收时间 信息的关联关系从已经记录的干扰源中判断出没有上报所述广播消息的终端 的干扰源标识并记录。
所述方法中， 所述正确接收包括解调该广播消息并校验正确； 所述接收 错误包括无法调该广播消息或解调后校验错误。
所述的方法中， 根据物理帧的格式中分配给用于广播消息发送的时隙大 小， 所述的广播消息以一个消息块或被分割为至少两个消息块发送， 并且： 当终端能够解调所述广播消息时， 终端在解调并校验一个广播消息后 , 发送一次受扰上^艮消息；
当终端无法解调所述广播消息时， 终端每次收到一个广播消息块发送一 次受扰上 4艮消息。
其中， 所述接收时间信息为包含广播消息块的物理帧的帧序列号， 或为 广播消息块的接收时间。
当所述广播消息分割为至少两个消息块发送时， 能够解调所述广播消息 的终端上报的所述接收时间信息为包含其中一个广播消息块的物理帧的帧序 列号， 或其中一个广播消息块的接收时间。
所述其中一个广播消息块是指所述广播消息的第一个消息块或者最后一 个消息块。 当所述接收时间信息为物理帧的帧序列号时， 所述关联关系的判定方法 为：
OBS根据校验正确的终端上报的广播消息的长度计算该广播消息包含的 消息块的数目；
当广播消息包含的消息块数目为 1 时， 则当两个终端上报的帧序列号相 等时， 判定存在所述关联关系;
当广播消息包含的消息块数目大于 1 时， 则^ ^据同一终端上报的帧序列 号以及相邻广播消息块的物理帧帧间隔确定该广播消息包含的所有消息块对 应的帧序列号集合， 并当没有上报所述广播消息的终端所上报的帧序列号包 含在所述序列号集合中时， 判定存在所述关联关系。
所述接收时间信息为消息块的接收时间时， 所述关联关系的判定方法为：
OBS根据校验正确的终端上报的广播消息的长度计算该广播消息包含的 消息块的数目；
当广播消息包含的消息块数目为 1 时， 则当两个终端上报的接收时间相 等或接收时间的差值在设定阈值内时， 判定存在所述关联关系；
当广播消息包含的消息块数目大于 1 时， 则才艮据同一终端上报的接收时 间以及接收相邻广播消息块之间的时间差值确定接收包含该广播消息的所有 消息块的时间范围； 并当没有上报所述广播消息的终端所上报的接收时间包 含在所述时间范围中或与所述范围的端值之差在设定阈值内时， 判定存在所 述关联关系。
所述方法还包括， OBS 向接收错误的终端返回根据所述关联关系判定的 该终端的干扰源信息， 用于指示该终端丢弃来自对应 NBS的广播消息。
所述方法还包括， OBS将各终端的干扰源信息更新到共存性数据库中。 所述方法还包括， OBS向 BS返回自己的标识信息、 以及所述共存性数 据库中记录的与 OBS相关的信息。
所述标识信息为 IP地址信息。
所述方法中， 终端根据广播消息中携带的校验码进行正确性校验。 所述方法中， 校验错误的终端在上报消息中还同时携带接收错误指示信 息。
所述的错误指示信息中还包括导致错误接收广播消息的原因值。
一种干扰源信息的收集上报系统， 包括至少一个终端设备和所述至少一 个终端设备所属的基站， 其中：
所述终端设备包括广播消息接收单元、 广播消息处理单元和受扰上报消 息发送单元，所述广播消息接收单元接收所属基站 OBS的邻站 NBS发送的携 带有 NBS标识信息的广播消息， 所述广播消息处理单元正确接收所述广播消 息后生成携带所述广播消息和接收时间信息的受扰上报消息， 反之生成携带 接收时间信息的受扰上报消息， 并通过受扰上报消息发送单元向 OBS发送受 扰上报消息；
所述终端所属的基站包括受扰上报消息接收单元和受扰上报消息处理单 元， 受扰上报消息接收单元接收各终端发送的受扰上报消息， 受扰上报消息 处理单元将正确接收的终端上报的广播消息中携带的 NBS标识信息记录为该 终端的干扰源标识， 并根据各终端上报的对邻站 NBS广播消息的接收时间信 息的关联关系从已经记录的干扰源中搜索出没有上报所述广播消息的终端的 干扰源标识。
较佳的， 所述广播消息处理单元中包括：
接收时间确定子单元， 连接所述广播消息接收单元， 确定所述广播消息 的接收时间；
解调子单元， 连接所述广播消息接收单元， 解调所述广播消息； 校验子单元， 连接所述解调子单元， 校验解调后的广播消息；
受扰消息生成子单元， 分别连接所述接收时间确定子单元、 解调子单元、 校验子单元和受扰上报消息发送单元， 当能够解调所述广播消息并校验正确 时， 生成携带所述广播消息和接收时间信息的受扰上报消息； 当无法解调该 广播消息或解调后校验错误时， 生成携带接收时间信息的受扰上报消息。
较佳的 , 所述受扰上报消息处理单元中包括： 接收时间提取子单元 , 提取各终端设备上报的受扰上报消息中携带的邻 站广播消息接收时间信息， 将校验正确的终端上报的广播消息中携带的 IBS 标识信息记录为该终端的干扰源标识；
关联关系确定子单元， 根据接收时间信息的关联关系从已经记录的干扰 源中搜索出没有上报所述广播消息的终端的干扰源标识。
进一步， 所述受扰上报消息处理单元中还包括： 共存性数据库， 分别连 接所述接收时间提取子单元和关联关系确定子单元， 保存各终端的干扰源标
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本发明还提供上述终端设备和基站。
发明所述技术方案的有益效果如下：
利用在终端上报干扰源消息设置时间标识， 使得同批受 IBS干扰的终端 中， 只要有部分终端能够正确接收干扰源的广播消息并将干扰源信息上报给 OBS, OBS 就可以利用这些时间标识的关联性， 确认没有正确接收广播消息 的终端的受干扰信息， 提高了新启动基站的单次广播消息为邻站正确统计受 干扰终端状态的成功率， 减少了因偶然因素或干扰造成终端接收广播消息错 误后， 带来的基站统计下属终端干扰信息的遗漏概率， 本发明所述方法实现 机制简单；
甚至对某些不具备正确接收并解调空口专用广播消息能力的终端， 只要 能够在特定时间范围监视空口受干扰的状态并按要求上报时， 基站一样能够 根据其他上报终端的信息判定其受干扰的状态和干扰源， 降低了为满足共存 性而对设备进行更改的最低要求， 为过渡期兼容各种终端提供了方便。 附图说明
图 1为邻站示意图；
图 2为现有技术中 OBS搜集本网受 IBS干扰的终端状态并与 IBS交互的 流程示意图；
图 3为承载共存性信息的 NBS广播消息专用帧格式示例； 图 4为广播消息逐帧发送示意图；
图 5为本发明所述 OBS搜集本网受 BS干扰的终端状态并与 NBS交互 的流程示意图；
图 6为实施例一系统示意图；
图 7实施例一所述终端逐帧接收广播消息时出现的各种情况示意图； 图 8为本发明提供的一种干扰源信息的收集上报系统主要结构示意图， 其中包括本发明所述的终端设备和基站的主要结构示意图；
图 9为图 8所示终端设备中， 广播消息处理单元的一种具体结构示意图； 图 10为图 8所示基站中，受扰上报消息处理单元的一种具体结构示意图。 具体实施方式
本发明所述方法是在现有技术的基础上， 针对当邻站 NBS (包括新启动 邻站 SBS/IBS和已工作的邻站 TOS/OBS )和 OBS之间的共同覆盖区域存在 多个终端， 在共同覆盖区域内邻站所属终端中部分终端受到干扰而不能完整 正确接收广播消息或无法解调时， 将接收时间信息发送给 OBS, OBS利用干 扰的时间信息之间的关联特性， 从其他终端上 4艮的干扰源信息中判定并统计 记录该终端的干扰源信息。
本发明所述的 OBS、 NBS和各 SS的终端间的交互终端干扰源信息的流 程如图 5所示， 包括如下步骤：
SI、 NBS将 IP地址信息按照物理帧格式的规定在空口广播给位于覆盖范 围内的终端， 该广播消息根据物理帧的格式中分配给用于广播消息发送的时 隙大小， 可能以一个消息块或分割为多个消息块在物理帧中发送， 每个物理 帧只承载一个消息块；
S2、 位于 NBS覆盖范围内的终端通过空口逐块接收该广播消息， 执行如 下操作： 能够解调广播消息帧的终端判断是否接收到一个完整的消息并校验 正确性， 如杲校验正确， 则记录完整的消息和收到第一个消息块的起始时间 标识； 终端无法解调广播消息帧或能够解调但校验错误时， 则记录消息接收 错误指示和收到第一个消息块的起始时间标识； 将记录的信息连同含有终端 自身身份及状态的信息一同通过空口携带在受扰上报消息中发送给所属的
OBS;
为实现本发明目的， 当终端能够解调所述广播消息时， 终端在解调并校 验一个广播消息后， 发送一次受扰上报消息； 当终端无法解调所述广播消息 时， 终端每次收到一个广播消息块发送一次受扰上报消息， 并丢弃收到的广 播消息块；
当所述广播消息以一个消息块发送时， 接收时间信息可以为终端接收到 包含该广播消息块的物理帧的帧序列号， 或者为接收到该广播消息块的终端， 上报的接收时间；
当所述广播消息分割为至少两个消息块发送时， 能够解调所述广播消息 的终端记录并上报的时间信息为包含其中一个广播消息块的物理帧的帧序列 号； 或者为接收到所述其中一个广播消息块的接收时间， 一般较为方便的实 现方法是选择记录第一个或最后一个消息块；
错误指示可以通过携带特定的消息值（例如上^ =艮一个特殊的 IP地址）或 在上报帧格式中设定标志位等方式标识， 如 Error-flag=l；
其中， 消息中包含的校验码可以是循环校验码、 奇偶校验码等， 终端根 据该校验码对消息的完整性和正确性进行校验， 校验出接收错误后还可以上 报具体的错误类型信息， 错误类型一般包括： 未收到正确的帧起始标记、 未 收到正确的帧结束标记、 帧长度错误、 消息内容 CRC校验错误等； 错误类型 信息可以通过携带设定的原因值进行上报。
S3、 所属的 OBS搜集各终端的上报信息， 根据时间标识关联上报信息的 关系， 判断出发生接收错误的终端的干扰源， 并将相关信息更新到本地共存 性数据库；
OBS根据在一定时间段（如设定的更新共存性数据周期或从开始收到第 一个上报消息开始的一段设定时间） 内所收到的所有共存基站发现的上报信 息记录， 对指示为正确 （如 Error-flag=0 ) 的终端上报信息直接记录出终端的 受干扰信息（如干扰源 IP等）， 对指示为错误 (如 Error-flag=l ) 的终端上报 信息， 根据其上报的时间标识来搜索相同或在有效范围内的上报指示为正确 的上 4艮信息记录， 从而判定终端的受干扰源。
其中， 有效范围是指接收一个广播消息的所有物理帧的序列号范围或接 收时间范围。 有效范围的确定用于判定关联关系是否存在， 当所述接收时间 信息为物理帧的序列号时， 有效范围为包含该广播消息的所有消息块的帧序 列号集合， 关联关系的判定方法包括如下步骤：
1 )、 OBS根据校验正确的终端上报的广播消息的长度计算该广播消息包 含的消息块的数目， 当消息块的数目为 1时转至步驟 4, 否则继续步骤 3;
2 )、 根据同一终端上报的帧序列号以及相邻广播消息块的物理帧帧间隔 确定该广播消息包含的所有消息块对应的帧序列号集合； 并
3 )、 当没有上报所述广播消息的终端所上报的帧序列号包含在所述序列 号集合中时， 判定存在所述关联关系；
4 )、 当两个终端上报的帧序列号相等时， 判定存在所述关联关系。
当所述接收时间信息为消息块的接收时间时， 有效范围为接收该广播消 息包含的所有消息块的时间范围， 并且考虑到不同终端接收时间之间可能相 差一定的阔值， 关联关系的判定方法包括如下步骤：
1 )、 OBS根据校验正确的终端上报的广播消息的长度计算该广播消息包 含的消息块的数目， 当消息块的数目为 1时转至步骤 4, 否则继续 2;
2 )、 根据同一终端上报的接收时间以及接收相邻广播消息块之间的时间 差值确定接收包含该广播消息的所有消息块的时间范围； 并
3 )、 当没有上报所述广播消息的终端所上报的接收时间包含在所述时间 范围中或与所述范围的端值之差在设定阔值内时， 判定存在所述关联关系；
4 )、 当两个终端上报的接收时间相等或接收时间的差值在设定阈值内时， 判定存在所述关联关系。
根据上述判定方法， 即使某些不具备正确接收并解调空口专用广播消息 能力的终端， 只要能够在特定时间范围监视空口受干扰的状态并按要求上报 时， 基站一样能够根据其他上报终端的信息判定其受干扰的状态和干扰源， 降低了为满足共存性而对设备进行更改的最低要求， 为过渡期兼容各种终端 提供了方便。
进一步， 该方法还可以包括 S3a通过空口发送反馈消息给没有上报所述 广播消息的相应终端， 用于通知终端根据关联关系判定的干扰源信息， 在终 端在收到反馈消息后， 如果再收到的同一个 NBS的广播消息， 则丟弃该广播 消息不进行上报， 从而节省上行带宽。
54、 基站 OBS更新本地共存性数数据库后， 根据终端上报的 NBS的 IP 地址信息， 通过有线网将 IP地址、 标识和数据库相关信息发送给 NBS;
55、 NBS通过有线网收到 OBS的信息获取相关部分并更新自己的共存性 数据库；
56、 NBS根据 OBS发来消息中获取的对方 IP地址等信息给 OBS作出应 答， 并在向 OBS发送的消息中附带自身其他的信息；
57、 OBS根据 NBS消息中的其他信息进行数据库更新及后续处理。
如图 6所示， 正在启动的基站 IBS 面临多个地理相近的基站： 0BS1、
OBS2, 其中 OBSl、 OBS2与 NBS是邻站， OBS1与 NBS的共同覆盖区域中 终端有 A、 B、 C, 而 OBS2和 BS的共同覆盖区域中的终端有 I， 终端 G处 于基站 OBS1和 OBS2覆盖区域交叠部分，其他终端 D/E/F不在基站间的交叠 区域。
如图 7所示， 为终端逐帧接收广播消息时出现的各种情况示意图， 第一 行表示发送的消息块， 其他行表示接收情况， 其中对号表示正确接收， 错号 表示接收出现错误， 缺少部分表示丟失该消息块， 例如， 第二行表示完整正 确接收， 第三行中第二个消息块属于接收错误， 第四行没有收到第一个消息 块， 最后一行表示终端无法解调专用广播消息帧。 终端错误接收广播消息时， 可能为解码错误， 也可能没有正确带有起始标记的第一个消息块。 终端只有 对每个消息正确解码并拼装校验完成后才能判断受干扰的信息并上报带有正 确指示的上报消息， 当解码错误或未探测到部分消息块等情况则只能上报带 有错误指示的消息。
仍参阅图 6, IBS和 OBS1共同覆盖区域中有 A、 B、 C终端， IBS初始化 发送的广播消息， 只有 A接收到正确的帧信息， 而 8、 C收到了错误的帧信 息。 其中 B为上图所示错误情况 1 , C为错误情况 2， A、 B、 C终端记录接收 到 IBS广播消息的当前时间标识（如当前的 FSN ), 并将 IBS广播信息的负载 ( Payload ),正确或错误标记、接收 IBS广播消息的时间标识（如当前的 FSN ) 连同含有终端自身身份及状态的信息一同通过空口上报给所属基站 OBSl。其 中终端记录的时间标识可以是携带帧起始标志 （SOF )或帧结束标志 （EOF ) 的 FSN,也可以时携带起始标志（ SOF )帧或结束标志（ EOF )帧的接收时刻。
OBS1将接收到 A、 B、 C终端上报的信息进行记录， 暂存收集信息示例 如表 3所示：
表 3.终端上报信息暂存表
Figure imgf000014_0001
上表 3中终端上报给 OBS消息中设置的接收正确或错误标记， 可以是一 个独立的标记， 如单比特或多比特的标识， 如 T 表示正确、 '0， 表示错误； 或 '11， 表示正确、 10表示错误； 也可以用其他方式来表示， 如利用干扰源 的联系地址， 例如利用一个正常情况在本表中不可能出现的 IP 地址， 如 255.255.255.255指示错误。 OBS根据标识信息在表 3中进行标记， 例如将正 确接收的标记为 OK, 将错误接收的标记为 NOK, 标记为 0K的终端， 直接 将干扰源信息更新到数据库， 对标记为 NOK的项目 , 根据时间标识查找临时 表中的相同或 FSN符合条件的 OK项目对应的干扰源。
关联标识通过图 7所示进行说明， 其中 M表示首个消息块起始帧序号， N表示消息块间隔帧数， n表示一个完整的广播帧占用的消息块数量， 终端以 接收到首个符合条件的消息块记录并在上报消息中发送 FSN, 终端 A接收正 确， 发送的消息中 FSN = M并指示校验正确， 此后 OBS1将判定所有上报消 息中 FSN为 M, M+N...M+(n-l)N并指示错误的终端的干扰源都与 A相同， 例如 B上报的是 FSN为 M, 而 C上报 FSN为 M+N, OBS1可以由此判断出 上 4艮错误消息的终端 B、 C的干^ ^源和终端 A的相同， 即 FSN标识为 M, M+N...M+(n-l)N都与标识 M相关联。 通例， 在以接收时间为标识信息时， 消息块 1、 2...n的接收时间都为关联时间信息。 选择其他消息块用于确定接 收时间信息时， 关联时间信息的计算方法类似， 这里不再赘述。
如图 8所示， 本发明基于上述方法， 还提供一种干扰源信息的收集上报 系统， 包括： 至少一个终端设备 100和每一个终端设备 100所属的基站 200, 其中：
终端设备 100包括： 广播消息接收单元 101、 广播消息处理单元 102和受 扰上报消息发送单元 103;
广播消息接收单元 101接收所属基站 OBS的邻站 NBS发送的携带有 NBS 标识信息的广播消息；
广播消息处理单元 102确定正确接收（能够解调该广播消息并校验正确） 所述广播消息后生成携带广播消息和接收时间信息的受扰上报消息， 接收错 误（无法解调该广播消息或解调后校验错误） 时生成携带接收时间信息的受 扰上报消息， 并通过受扰上艮消息发送单元 103向 OBS发送受扰上报消息； 终端所属的基站 200包括： 受扰上报消息接收单元 201和受扰上报消息 处理单元 202;
受扰上报消息接收单元 201接收各终端发送的受扰上报消息；
受扰上报消息处理单元 202将校验正确的终端上报的广播消息中携带的 BS标识信息记录为该终端的干扰源标识， 并根据各终端上报的对邻站 NBS 广播消息的接收时间信息的关联关系从已经记录的干扰源中搜索出没有上报 广播消息的终端的干扰源标识。
如图 9所示， 广播消息处理单元 102的一种结构可以具体包括： 接收时间确定子单元 1021 , 连接广播消息接收单元 101 , 确定广播消息 的接收时间；
解调子单元 1022, 连接广播消息接收单元 101 , 解调广播消息； 校验子单元 1023， 连接解调子单元 1022, 校验解调后的广播消息； 受扰消息生成子单元 1024, 分别连接接收时间确定子单元 1021、 解调子 单元 1022、 校验子单元 1023和受扰上报消息发送单元 103， 接收时间确定子 单元 1021确定接收时间并发送给受扰消息生成子单元 1024，解调子单元 1022 无法解调广播消息时向受扰消息生成子单元 1024发送触发信号， 校验子单元
1023校验正确或错误后向受扰消息生成子单元 1024发送相应触发信号；
受扰消息生成子单元 1024当能够解调广播消息并校睑正确时， 生成携带 广播消息和接收时间信息的受扰上报消息； 当无法解调该广播消息或解调后 校验错误时， 生成携带接收时间信息的受扰上报消息。
如图 10所示， 受扰上 ·ί艮消息处理单元 202的一种结构可以包括： 接收时间提取子单元 2021 , 提取各终端设备上报的受扰上报消息中携带 的邻站广播消息接收时间信息， 将校验正确的终端上报的广播消息中携带的
IBS标识信息记录为该终端的干扰源标识；
关联关系确定子单元 2022, 根据接收时间信息的关联关系从已经记录的 干扰源中搜索出没有上报广播消息的终端的干扰源标识；
共存性数据库 2023,分别连接接收时间提取子单元 2021和关联关系确定 子单元 2022， 保存各终端的干扰源标识信息。 发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权利要 求及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种干扰源信息的收集上报方法， 其特征在于， 包括如下步骤： 各终端接收邻站 NBS发送的携带有 NBS标识信息的广播消息，能够正确 接收的终端将所述广播消息和接收时间信息携带在受扰上报消息中发送给所 属基站 OBS, 接收错误的终端在受扰上报消息中携带接收时间信息；
OBS将接收正确的终端上报的广播消息中携带的 NBS标识信息记录为该 终端的干扰源标识， 并根据各终端上报的对邻站 NBS广播消息的接收时间信 息的关联关系从已经记录的干扰源中判断出没有上报所述广播消息的终端的 干扰源标识。
2、 如权利要求 1所述的方法， 其特征在于， 所述的 NBS包括新启动基 站 IBS和正在运行的邻站 OBS; 所述方法中， 所述的正确接收包括解调该广 播消息并校验正确， 接收错误包括无法调该广播消息或解调后校验错误。
3、 如权利要求 2所述的方法， 其特征在于， 根据物理帧的格式中分配给 用于广播消息发送的时隙大小， 所述的广播消息以一个消息块或被分割为至 少两个消息块发送， 并且：
当终端能够解调所述广播消息时， 终端在解调并校验一个广播消息后， 发送一次受扰上报消息；
当终端无法解调所述广播消息时， 终端每次收到一个广播消息块发送一 次受扰上报消息。
4、 如权利要求 3所述的方法， 其特征在于， 所述接收时间信息为包含广 播消息块的物理帧的帧序列号， 或为广播消息块的接收时间。
5、 如权利要求 4所述的方法， 其特征在于， 当所述广播消息分割为至少 两个消息块发送时， 能够解调所述广播消息的终端上报的所述接收时间信息 为包含其中一个广播消息块的物理帧的帧序列号， 或其中一个广播消息块的 接收时间。
6、 如权利要求 5所述的方法， 其特征在于， 所述其中一个广播消息块是 指所述广播消息的第一个消息块或者最后一个消息块。
7、 如权利要求 4、 5或 6所述的方法， 其特征在于， 所述接收时间信息 为物理帧的帧序列号时， 所述关联关系的判定包括如下步骤：
OBS根据校验正确的终端上报的广播消息的长度计算该广播消息包含的 消息块的数目；
当广播消息包含的消参块数目为 1 时， 则当两个终端上报的帧序列号相 等时， 判定存在所述关联关系；
当广播消息包含的消息块数目大于 1 时， 则^ ^据同一终端上报的帧序列 号以及相邻广播消息块的物理帧帧间隔确定该广播消息包含的所有消息块对 应的帧序列号集合， 并当没有上报所述广播消息的终端所上 4艮的帧序列号包 含在所述序列号集合中时， 判定存在所述关联关系。
8、 如权利要求 4、 5或 6所述的方法， 其特征在于， 所述接收时间信息 为消息块的接收时间时， 所述关联关系的判定包括如下步骤：
OBS根据校验正确的终端上报的广播消息的长度计算该广播消息包含的 消息块的数目；
当广播消息包含的消息块数目为 1 时， 则当两个终端上报的接收时间相 等或接收时间的差值在设定阈值内时， 判定存在所述关联关系；
当广播消息包含的消息块数目大于 1 时， 则根据同一终端上报的接收时 间以及接收相邻广播消息块之间的时间差值确定接收包含该广播消息的所有 消息块的时间范围； 并当没有上报所述广播消息的终端所上报的接收时间包 含在所述时间范围中或与所述范围的端值之差在设定阔值内时， 判定存在所 述关联关系。
9、 如权利要求 1所述的方法， 其特征在于， 所述方法还包括， OBS向接 收错误的终端返回^ ^据所述关联关系判定的该终端的干扰源信息， 用于指示 该终端丢弃来自对应 NBS的广播消息。
10、如权利要求 1或 9所述的方法， 其特征在于， 所述方法还包括， OBS 将各终端的干扰源信息更新到共存性数据库中。
11、 如权利要求 10所述的方法， 其特征在于， 所述方法还包括， OBS向 IBS返回自己的标识信息、 以及所述共存性数据库中记录的与 OBS相关的信
12、 如权利要求 2所述的方法， 其特征在于， 所述标识信息为 IP地址信 息； 终端根据广播消息中携带的校验码进行正确性校验。
13、 如权利要求 1 所述的方法， 其特征在于， 校验错误的终端在上报消 息中还同时携带接收错误指示信息。
14、 如权利要求 13所述的方法， 其特征在于， 所述的错误指示信息中还 包括导致错误接收广播消息的原因值。
15、 一种干扰源信息的收集上报系统， 包括至少一个终端设备和所述至 少一个终端设备所属的基站， 其特征在于，
所述终端设备包括广播消息接收单元、 广播消息处理单元和受扰上报消 息发送单元，所述广播消息接收单元接收所属基站 OBS的邻站 NBS发送的携 带有 NBS标识信息的广播消息， 所述广播消息处理单元正确接收所述广播消 息后生成携带所述广播消息和接收时间信息的受扰上报消息， 反之生成携带 接收时间信息的受扰上报消息， 并通过受扰上报消息发送单元向 OBS发送受 扰上报消息；
所述终端所属的基站包括受扰上报消息接收单元和受扰上报消息处理单 元， 受扰上报消息接收单元接收各终端发送的受扰上报消息， 受扰上报消息 处理单元将正确接收的终端上报的广播消息中携带的 BS标识信息记录为该 终端的干扰源标识， 并根据各终端上报的对邻站 NBS广播消息的接收时间信 息的关联关系从已经记录的干扰源中搜索出没有上报所述广播消息的终端的 干扰源标识。
16、 如权利要求 15所述的系统， 其特征在于， 所述广播消息处理单元中 包括：
接收时间确定子单元， 连接所述广播消息接收单元， 确定所述广播消息 的接收时间； 解调子单元， 连接所述广播消息接收单元， 解调所述广播消息； 校验子单元， 连接所述解调子单元， 校验解调后的广播消息；
受扰消息生成子单元， 分别连接所述接收时间确定子单元、 解调子单元、 校验子单元和受扰上报消息发送单元， 当能够解调所述广播消息并校验正确 时， 生成携带所述广播消息和接收时间信息的受扰上报消息； 当无法解调该 广播消息或解调后校验错误时， 生成携带接收时间信息的受扰上报消息。
17、 如权利要求 15或 16所述的系统， 其特征在于， 所述受扰上报消息 处理单元中包括：
接收时间提取子单元， 提取各终端设备上报的受扰上 ^艮消息中携带的邻 站广播消息接收时间信息， 将校验正确的终端上报的广播消息中携带的 NBS 标识信息记录为该终端的干 4尤源标识；
关联关系确定子单元， 根据接收时间信息的关联关系从已经记录的干扰 源中搜索出没有上报所述广播消息的终端的干扰源标识。
18、 如权利要求 17所述的系统， 其特征在于， 所述受扰上报消息处理单 元中还包括： 共存性数据库， 分别连接所述接收时间提取子单元和关联关系 确定子单元， 保存各终端的干扰源标识信息。
19、 一种终端设备， 包括广播消息接收单元、 广播消息处理单元和受扰 上报消息发送单元， 其特征在于， 所述广播消息处理单元中包括：
接收时间确定子单元， 连接所述广播消息接收单元， 确定所述广播消息 的接收时间；
解调子单元， 连接所述广播消息接收单元， 解调所述广播消息； 校验子单元， 连接所述解调子单元， 校验解调后的广播消息；
受扰消息生成子单元， 分别连接所述接收时间确定子单元、 解调子单元、 校验子单元和受扰上报消息发送单元， 当能够解调所述广播消息并校验正确 时， 生成携带所述广播消息和接收时间信息的受扰上报消息并通过所述受扰 上报消息发送单元发送； 当无法解调该广播消息或解调后校验错误时， 生成 携带接收时间信息的受扰上报消息并通过所述受扰上报消息发送单元发送。
20、 一种基站， 包括受扰上报消息接收单元和受扰上报消息处理单元， 其特征在于， 所述受扰上报消息处理单元中包括：
接收时间提取子单元， 连接所述受扰上报消息接收单元， 提取接收的各 终端设备上报的受扰上报消息中携带的邻站广播消息接收时间信息， 将校验 正确的终端上 4艮的广播消息中携带的 NBS标识信息记录为该终端的干扰源标 识；
关联关系确定子单元， 根据接收时间信息的关联关系从已经记录的干扰 源中搜索出没有上 4艮所述广播消息的终端的干扰源标识。
21、 如权利要求 20所述的基站， 其特征在于， 所述受扰上报消息处理单 元中还包括： 共存性数据库， 分别连接所述接收时间提取子单元和关联关系 确定子单元， 保存各终端的干 ·ί尤源标识信息。
PCT/CN2006/002293 2005-10-25 2006-09-06 Méthode, système et terminal pour collecter et rapporter des informations de source d’interférence WO2007048304A1 (fr)

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