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WO2007006220A1 - Procédé de recherche de station adjacente et d’établissement de connexion avec ladite station adjacente par la bs de coexistence lors de l’initialisation - Google Patents

Procédé de recherche de station adjacente et d’établissement de connexion avec ladite station adjacente par la bs de coexistence lors de l’initialisation Download PDF

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Publication number
WO2007006220A1
WO2007006220A1 PCT/CN2006/001613 CN2006001613W WO2007006220A1 WO 2007006220 A1 WO2007006220 A1 WO 2007006220A1 CN 2006001613 W CN2006001613 W CN 2006001613W WO 2007006220 A1 WO2007006220 A1 WO 2007006220A1
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WO
WIPO (PCT)
Prior art keywords
contact
base station
terminal
station
neighboring
Prior art date
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Ceased
Application number
PCT/CN2006/001613
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English (en)
Chinese (zh)
Inventor
Xuyong Wu
Ruobin Zheng
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
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Publication of WO2007006220A1 publication Critical patent/WO2007006220A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • H04W16/16—Spectrum sharing arrangements between different networks for PBS [Private Base Station] arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/02—Inter-networking arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Definitions

  • the present invention relates to the field of communications, and in particular, to a method for coexistence base stations to discover neighboring stations and establish contact with neighboring stations at initialization. Background of the invention
  • Broadband wireless access BWA (Broadband wireless access) devices can provide users with convenient broadband access.
  • broadband wireless access devices based on proprietary protocols, as well as broadband wireless access devices based on standard protocols.
  • Broadband wireless access technology is currently booming, and the technology of using broadband resources to carry out broadband metro access has strong vitality and market space.
  • wireless spectrum resources are invaluable. Especially in some areas that are not well planned or some networks that have unlicensed frequency bands, there are often multiple base stations operating on the same channel, resulting in signal phase mutual interference of different base stations. Therefore, in order to coordinate the coexistence between the base station devices in the same frequency band, especially between the base station devices on the unlicensed frequency band, it is necessary to establish a coexistence mechanism between the base station devices.
  • a neighboring station is a base station that has a common coverage area and that has a valid terminal in the common coverage area.
  • BS1 and BS2 are geographically close, and the BS1 and BS2 stations themselves are each in the coverage area of the other party, since there is no valid terminal in the common coverage area of the BS1 and BS2 sites, The BS1 and BS2 stations are not considered neighbors.
  • the overlapping areas between BS2 and BS3 are 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 wireless network of the opposite party, so BS2 and BS3 are called neighboring stations.
  • the base stations In a coexisting base station system, it is often required that the base stations must be synchronized with each other between the base stations, and the transmission and reception signal frame timings between the base stations are strictly aligned, so that the stations with similar geographical locations are not caused to interfere with each other. .
  • the base stations In BS1 and BS2 in Fig. 1, if BS2 is transmitting when BS1 is transmitting, the IjBS1 will cause serious interference to the signal that BS2 receives the subordinate terminal.
  • the basic structure of the coexistence base station is shown in Figure 2. It consists of three parts: the wireless function part, the wired function part, and the coexistence function part (including the coexistence database).
  • the coexistence function part and the other two parts have interfaces, the wired function part is connected to the wired core network or the access network is responsible for the transmission and reception and processing related to the wired communication, and the wireless function part is connected to the air interface for the wireless communication receiving and processing and processing, the wired function Partially connected to the wireless function section.
  • the base station is divided into a normal working state and a startup initial state.
  • a newly activated base station is in a certain normal working state.
  • the starting base station SBS1 faces multiple base stations with similar geographical locations: WBS1.
  • WBS2, WBS3, and WBS4, in Figure 3 there are terminals A and B in the common coverage area of WBS1 and SBS1, and terminals C in the common coverage area of WBS2 and SBS1, and terminal D in the common coverage area of WBS3 and SBS1. . Therefore, WBS1, WBS2, WBS3 and SBS1 are neighbors.
  • the terminal G is in the overlapping portion of the coverage areas of the base stations WBS1 and WBS2.
  • the other terminals E/F/H/I/J/K are not in the overlapping area between the base stations.
  • SBS1 cannot directly communicate with each WBS on the air interface, and the contact side (such as IP address) of the other party is not known on the wired side.
  • SBS1 cannot discover its neighbors and establish contact with neighbors.
  • the SBS1 in the air interface will directly interfere with the terminal in the overlapping part of the WBS coverage area with the SBS1.
  • the uncoordinated terminals of the multiple WBSs interfere with each other for the SBS1, so that the SBS1 cannot parse the information carried by the SBS1.
  • a neighboring station discovers and establishes a contact method in the prior art: After the base station is started, the message sent by the neighboring station is detected by the signal of the air interface, and the message is parsed to obtain the information of the neighboring station.
  • the disadvantages of this method are as follows: Since neighboring stations often cannot directly receive signals from each other's stations, they cannot resolve the information of the neighboring neighbors. For example, in the network of Figure 3, SBS1 cannot directly detect the signal of WBS1.
  • Another method for discovering and establishing a contact between neighboring stations in the prior art is as follows: After the base station is started, the SBS detects the signal of the terminal of the neighboring station through a simple detection method, and parses the message to obtain the information of the neighboring station.
  • Another method for discovering and establishing a connection between neighboring stations in the prior art is as follows: After the base station SBS1 is started, information such as its latitude and longitude is registered by wire to a coexistence information server (CIS), and the server judges its neighboring station by using information such as latitude and longitude, and Information (IP address, etc.) sent to these neighbors of SBS1.
  • CIS coexistence information server
  • IP address IP address, etc.
  • the disadvantages of this method are as follows: Since the neighboring stations cannot directly judge whether they interfere with each other according to the distance from other stations, the server cannot provide reliable neighbor information to the base station SBS1. In addition, since the coexistence base station system is often not owned by a unified fixed operator, the setup and management of the coexistence information server is also problematic. In addition, the method requires the introduction of devices other than the coexisting base station system, which increases the cost.
  • the present invention provides a method for coexistence base stations to discover neighboring stations and establish contact with neighboring stations upon initialization, including -
  • the newly activated base station actively sends a contact request message to the terminal in the overlapping area with the neighboring station by using the DCTFS, and discovers the neighboring station according to the contact information carried by the returned contact message and establishes contact with the neighboring station.
  • One DCTFS is set in the downlink frame of each coexistence base station, or one DCTFS is set only in the downlink frame of the coexistence base station that satisfies the set condition.
  • the step A described further includes:
  • the time start point, the duration of the length, the initial frequency and the frequency combination of the DCTFS are fixed and unified under the conditions of each frequency band.
  • the newly activated base station uses the DCTFS to send a contact request message to the terminal in the overlapping area with the neighboring station, and the terminal will connect
  • the valid information carried in the contact request message or the contact request message received is submitted to the neighboring station to which the terminal belongs;
  • the neighboring station to which the terminal belongs returns a contact message to the newly activated base station according to the received contact request message or the valid information carried in the message converted by the terminal format, and the newly activated base station receives the contact according to the received contact.
  • the message establishes contact with the neighboring station.
  • the step B1 specifically includes:
  • the newly activated base station uses the DCTFS to send a contact request message including the contact information of the newly activated base station to the terminal in the overlapping area with the neighboring station;
  • the terminal sends a request for reporting a coexistence message to the neighboring station to which the terminal belongs, and after receiving the report that can be reported by the neighboring station, the terminal submits the received contact request message to the neighboring station.
  • the step B12 further includes:
  • the terminal directly submits the received contact request message to the neighboring station to which it belongs by using the remaining bandwidth originally allocated by the terminal.
  • the step B2 specifically includes:
  • the neighboring station when the newly activated base station and the neighboring station to which the terminal belongs can communicate with each other through a wired intercommunication, the neighboring station returns a contact message to the newly activated base station by using a wired path;
  • the newly activated base station After receiving the contact message, the newly activated base station initiates communication interaction with the neighboring station, and the two parties establish an effective wired connection.
  • the step B2 specifically includes:
  • the neighboring station to which the terminal belongs selects a coexisting contact terminal, and instructs the coexisting contact terminal to use the UCTFS to send the returned contact message to the newly activated base station on behalf of the network of the neighboring station;
  • the newly activated base station After receiving the contact message, the newly activated base station initiates a communication interaction with the neighboring station, and the newly activated base station and the neighboring station use the DCTFS and the UCTFS to perform information interaction through the contact terminal, and the two parties establish an effective wireless contact. .
  • the step B23 specifically includes: setting a UCTFS in an uplink frame of each coexistence base station, or setting only one UCTFS in an uplink frame of a coexistence base station that satisfies the set condition.
  • the step B23 further includes:
  • the time start point, the duration length, the initial frequency and the frequency combination of the UCTFS are fixed and unified under the conditions of each frequency band.
  • the step B24 specifically includes:
  • the contact terminals for a pair of newly activated base stations and neighboring stations may be one or more, and the contact terminals may be temporary or fixed for a period of time.
  • a method for coexisting a base station to discover a neighboring station and establish contact with a neighboring station at initialization including:
  • the step C described further includes: In a certain area, the time start point, the duration length, the initial frequency and the frequency combination of the UCTFS are fixed and unified under the conditions of each frequency band.
  • the present invention can quickly discover neighboring stations through a simple mechanism for a newly activated base station SBS, and establish a wired or wireless connection with neighboring stations, thereby avoiding hidden problems of neighboring stations;
  • the working base station WBS can also know the situation of the base station being started in time, collect the status information of each terminal in the overlapping interference area, and quickly make the coexistence negotiation and corresponding operation with SBS;
  • the present invention is compatible with the existing 802.16 frame format, and the neighboring station discovery phase does not require a public server, which reduces the requirements for network setup and management.
  • the DCTFS and UCTFS provided by the present invention can also be used to solve some low levels other than initialization. Coexistence of informational information interaction. BRIEF DESCRIPTION OF THE DRAWINGS
  • Figure 1 is a schematic diagram of the concept of a neighboring station
  • FIG. 2 is a schematic diagram of a basic structure of a coexistence base station
  • FIG. 3 is a schematic diagram of a network of a coexisting base station according to the illustrated example of the present invention.
  • 5 is a schematic diagram of frequency domain description of OFDM or 0FDMA symbols
  • FIG. 6 is a schematic diagram showing the position of a DCTFS in a frame structure according to the present invention.
  • Figure 7 is a schematic diagram of setting a DCTFS in a multi-physical frame
  • FIG. 8 is a schematic diagram showing the timing of sending and receiving of the air interface of the SBS before the SBS is started when only the DCTFS is set;
  • Figure 9 is a schematic diagram of the specific working process of the SBS during the initialization process.
  • FIG. 10 is a schematic diagram of a specific working process of a terminal in an overlapping area between an SBS and a WBS in an SBS initialization process
  • Figure 11 is a schematic diagram showing the specific working flow of the WBS in the SBS initialization process
  • FIG. 12 is a schematic diagram of setting a pair of UCTFS and DCTFS in multiple frames
  • FIG. 13 is a schematic diagram of setting UCTFS and DCTFS in different frames in multiple frames
  • FIG. 14 is a schematic diagram showing the timing of transmitting and receiving SBS air ports during SBS startup process when only DCTFS is set;
  • FIG. 15 is a schematic diagram showing the timing of transmitting and receiving SBS air ports during SBS startup process when DCTFS and UCTFS are simultaneously set;
  • Figure 16 is a schematic diagram of the air interface occupation of the SBS after the SBS is started
  • FIG. 17 is a schematic diagram of a coexistence base station network according to an embodiment of the present invention.
  • FIG. 18 is a schematic diagram of a network topology structure according to an embodiment of the present invention.
  • FIG. 19 is a schematic diagram of an interaction process between SBS1, terminal A, and WBS1 according to an embodiment of the present invention.
  • 20 is a schematic diagram of a coexistence base station network according to another embodiment of the present invention.
  • FIG. 21 is a schematic diagram of a network topology structure according to another embodiment of the present invention.
  • FIG. 22 is a schematic diagram of an interaction process between SBS1, terminal A, and WBS1 in another embodiment of the present invention.
  • FIG. 23 is a schematic diagram showing the specific implementation structure of the device and system according to the present invention.
  • the present invention provides a method for coexistence base stations to discover neighboring stations and establish contact with neighboring stations upon initialization.
  • the core of the present invention is: in the downlink frame structure of the coexistence base station, a downlink coexistence dedicated time-frequency block DCTFS is opened, which is used for interacting with the terminal in the overlapping area of the neighboring station, and obtaining the information according to the interaction of the information. Contact information for neighboring stations.
  • the present invention is described in detail below with reference to the accompanying drawings.
  • the specific processing procedure of the method of the present invention is as shown in FIG. 4, and includes the following steps: Step 4-1: In the downlink frame structure channel of the coexistence base station, a section of downlink coexistence dedicated is opened. Time-frequency block DCTFS.
  • the present invention firstly needs to use OFDM (Orthogonal Frequency Division Multiplexing) technology in a coexistence base station, and the related coexisting base stations have wired or wireless network interworking, and thus, the coexisting base station constitutes an 0FDM system.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the 0FDM technology belongs to the multi-carrier modulation technique. Its basic idea is to divide the channel into many orthogonal sub-channels, use one sub-carrier for modulation on each sub-channel, and transmit each sub-carrier in parallel. This technology has the ability to transmit signals under clutter interference and is often used in transmission media that are susceptible to external interference or poor resistance to external interference.
  • a channel of an 0FDM system includes a number of subchannels (Subchannels), each subchannel consisting of a number of subcarriers.
  • Subchannels There are three types of subcarriers according to the type of data to be transmitted: data subcarriers: subcarriers for transmitting data; pilot subcarriers: subcarriers for transmitting pilots; null subcarriers: subcarriers not used for transmitting any data, including Guard Band and DC Subcarrier.
  • the various subcarriers may constitute an OFDM or 0FDMA (Orthogonal Frequency Division Multiple Access) symbol, and the number of subcarriers determines the number of points of the FFT (Fast Fourier Transform) transform.
  • the subcarriers constituting one subchannel may or may not be adjacent. For example, in the frequency domain description diagram of the 0FDM or 0FDMA symbols shown in Figure 5, the subcarriers are adjacent.
  • the subchannel division is an FDMA method, and each subchannel transmits a carrier subset. There are three main methods for dividing the subchannel:
  • the first method is: dividing the carriers of different subchannels into consecutive groups. This method is the simplest to implement, and the adjacent subchannels are less disturbed, but the obtained frequency diversity is less effective.
  • the second method is: interleaving the carriers of different subchannels in a regular manner.
  • the frequency diversity obtained by this method is better, but the system is more sensitive to interference between subchannels.
  • the third method is: interleaving carriers of different subchannels in a pseudo-random manner, and using different sequence change codes by different base stations to reduce interference between base stations.
  • the present invention needs to define a DCTFS (Coexistence Dedicated Time-Frequency Block) in the downlink (DL) portion of the frame structure of the coexisting radio base station based on the OFDM technology, which is composed of one or more subchannels and one or more OFDM or 0FDMA symbols.
  • the frequency space is formed.
  • a certain subchannel can also be defined as a DCTFS.
  • the time start point, the duration length, the initial frequency and the frequency combination can be fixed and unified in a certain country region under various frequency conditions, so that the base station can initiate the contact request in an accurate time when starting.
  • the time-frequency block is not occupied by any base station when there is no coexistence message interaction.
  • DCTFS can be set to a fixed-length time-frequency block at a fixed position after the start of the frame, as shown in Figure 6.
  • the time-frequency block may not need to be set in each frame, and all the frames may be uniformly labeled, and the DCTFS is set only on a regular part of the frame, as shown in FIG. After numbering frames of all base stations, DCTFS is set on each frame whose frame number can be divisible by N.
  • the DCTFS is used to send an initialization message to the SBS. Therefore, before the SBS is started, the time-frequency block is idle and is not occupied by the base station. At this time, the timing diagram of the air interface transmission and reception of the SBS is as shown in FIG. 8.
  • Step 4-2. The newly activated base station (SBS) uses the DCTFS to issue a contact request to the terminal in the overlapping area with the neighboring station (WBS).
  • the specific working process of the SBS (newly activated base station) in the initialization process is as shown in FIG. 9, and the specific description is as follows: After the SBS (newly activated base station) is powered on, the initialization of the wired part is completed first. For example, obtain an IP address, etc. Then select the target channel. Detecting whether there is interference on the target channel. If there is no interference, it indicates that there is no interference between the base station and the neighboring station in the overlapping area, and the independent default configuration initialization procedure is started.
  • the base station and the base station are There is a valid terminal in the overlapping area of the neighboring station, so the timing frequency information of the coexistence dedicated time-frequency block DCTFS is obtained by the full-time timing frequency information. And transmitting, in the DCTFS, the contact request message to the neighboring base station to the active terminal, where the message contains information required by the neighboring station to contact the SBS.
  • the process of detecting the target channel is optional (the effective terminal is likely to have limited the transmission power when the SBS is started due to the communication requirement, which may cause the SBS to interfere with the terminal's signal reception but the SBS detection. Not the terminal's transmit signal, which is one of the reasons for detecting the target channel process).
  • Step 4-3 The terminal in the overlapping area between the SBS and the WBS submits the received contact request message to the WBS to which the terminal belongs.
  • the specific working process of the terminal in the overlapping area between the SBS and the WBS in the SBS initialization process is as shown in FIG. 10, and the specific description is as follows:
  • the terminal in the overlapping area between the SBS and the WBS listens to the signal on the DCTFS time-frequency block while receiving the normal data transmission and reception, and upon receiving the contact request of the base station (SBS), reports the received signal to the original base station (WBS). Message. .
  • the terminal may directly send the original bandwidth allocated to the original base station (WBS), or may send a request to report the coexistence message first, and then wait for the WBS indication, if the WBS indication is received. If the terminal can report the request, it reports the valid information in all the contact request messages received.
  • WBS original bandwidth allocated to the original base station
  • the terminal Since the uplink bandwidth is allocated on demand, the terminal does not necessarily have sufficient uplink bandwidth. In principle, the user of the terminal needs to pay for a larger amount of traffic, and the traffic is used for the base station, so The application and reporting methods are more reasonable. In this way, the base station can allocate a free reporting bandwidth for the terminal that needs to be reported.
  • Step 4 4 The WBS sends a contact message to the SBS using the wired network or the contact terminal according to the received contact request.
  • the terminal allocates the uplink bandwidth to the reporting terminal according to all the reporting requests received in a certain period of time, and then indicates the The terminal reports the contact request message obtained by the terminal, and the contact request message contains the necessary information of the wired contact SBS.
  • the WBS can also receive the message that the terminal directly reports the remaining bandwidth without requesting.
  • the WBS After receiving the contact request information, the WBS can initiate a contact message to the SBS through the cable between the coexistence stations.
  • the WBS may also designate a contact terminal, and then initiate a contact message to the SBS through the contact terminal.
  • UCTFS uplink coexistence dedicated time-frequency block
  • UL upstream part of the original frame format of the coexisting base station, which is composed of one or more subchannels and one or more OFDM or 0FDMA symbols.
  • a subchannel can also be defined as UCTFS.
  • the initial location of the time and the time slice length ie, the time domain of one or more OFDM or OFDM symbols
  • the initial frequency and frequency combination ie, the frequency domain configuration of one or more subchannels
  • UCTFS and DCTFS time-frequency blocks can be set in each frame.
  • All frames can be uniformly labeled, and DCTFS and UCTFS can be determined only on a regular part of the frame.
  • DCTFS can also be configured on some frames.
  • UCTFS for example, after numbering frames for all base stations, a DCTFS and UCTFS are given for every N frames (N is a natural number), such as frames that are divisible by frame number N (0, N, 2N,
  • DCTFS is given on a frame that can be divisible by N
  • UCTFS is given on a frame divided by N by 1.
  • a schematic diagram of setting a pair of UCTFS and DCTFS in a multi-frame is shown in FIG. 12, and a schematic diagram of setting UCTFS and DCTFS in different frames in a multi-frame is shown in FIG.
  • the BS can designate it as the CLSS (Coexistence Contact Terminal) with the SBS.
  • the base station WBS sends a contact indication, instructing the CLSS to use the UCTFS to send the specific coexistence to the SBS.
  • Sexual negotiation signaling After receiving the indication, the terminal buffers other signaling that needs to be sent, and uses the UCTFS to send a corresponding contact message to the SBS as required.
  • the terminal will continue to monitor the signal on the DCTFS time-frequency block.
  • the CLSS is selected by the WBS and can be temporary. For example, each message specifies a CLSS, or it can be fixed for a period of time. It can specify a CLSS for a pair of WBS and SBS connections, or multiple CLSSs at the same time.
  • the message sent to the WBS and sent by the SBS as described above can adopt the ARQ mechanism (Automatic Retransmission Request).
  • the timing diagram of the air interface transmission and reception of the SBS is as shown in FIG. 14.
  • the timing diagram of the air interface transmission and reception of the SBS is as shown in FIG. 15.
  • Step 4-5 After receiving the WBS contact message, the SBS and the WBS complete mutual coexistence configuration, and the two parties establish effective contact communication. .
  • the SBS After using the DCTFS to send a contact request to the terminal in the overlapping area with the WBS, the SBS waits for the contact message returned by the WBS (possibly multiple).
  • the SBS receives the contact information sent by the neighboring WBS through the wired mode within the specified time, the communication interaction with the neighboring station is initiated, and the two parties establish an effective wired connection to complete the coexistence negotiation and configuration of the local station and the neighboring station. And carry on the subsequent communication interaction, after the SBS completes the initialization, it starts to work normally and becomes the WBS.
  • the SBS receives the contact information sent by the CLSS through the UCTFS within the specified time, the communication interaction with the neighboring station (the base station to which the CLSS belongs) is initiated, and the coexistence negotiation and configuration of the local station and the neighboring station are completed by using the DCTFS and the UCTFS. And the subsequent communication interaction, the SBS starts the normal work of the base station after the initialization is completed, and becomes the WBS.
  • the DCTFS contact request can be resent.
  • the default configuration initialization scheme is started, and the SBS starts the normal operation of the base station after the initialization is completed, and becomes the WBS.
  • the present invention further provides an embodiment of the method according to the present invention.
  • the coexistence base station network shown in FIG. 17 is taken as an example, and the network topology structure is as shown in FIG. 18.
  • Each base station is connected by a wired network.
  • Each base station has its own terminal connected below it.
  • A/B/E/G terminal is connected under WBS1
  • a C/F terminal is connected under WBS2, and D/H is hung under WBS3. terminal.
  • the terminal connected to SBS1 cannot be initialized before SBS1 works normally.
  • the corresponding terminal in the coverage area of SBS1 has A/B/C/D, and G is in the coverage of WBS2 at the same time.
  • SBS1 could not know the wired contact information of the neighboring station, such as the IP address.
  • SBS1 starts and completes the wired part initialization, obtains the information for wired connection with the neighboring station, such as the IP address of the station, selects the wireless channel, and then uses DCTFS to send the contact to all the terminals (including terminal A) reachable by the air interface.
  • Request message the contact request The message includes information such as the IP address of SBS 1;
  • the terminal A intercepts the contact request message, and sends the coexistence message request to the original base station WBS1 after receiving the contact request message, and the qualified terminal that receives the contact request message on the DCTFS sends a coexistence message to the TOS 1 to which the terminal belongs. Reporting request;
  • the WBS1 learns the report request, it allocates the bandwidth for reporting the coexistence message to the designated terminal and specifies that it performs coexistence message reporting. For example, if both terminals A and B apply for coexistence message reporting, WBS1 can specify that A reports it.
  • the coexistence message can also report all the terminals that apply for reporting in order;
  • the terminal A After receiving the report indication, the terminal A reports the obtained contact request message sent by the SBS1 to the WBS1;
  • the WBS1 After receiving the contact request message reported by the terminal A, the WBS1 sends a contact message to the SBS1 through the wired network according to the obtained wired contact information (such as an IP address, etc.);
  • SBS1 knows the contact method with the neighboring station WBS1 from the message, and then sends a contact message to the WBS1 through the wired network. After the WBS1 receives the contact message of the SBS1 again from the cable, the SBS1 and the WBS1 are established. Wired contact. The two parties can then begin various information interactions, including coexistence negotiations.
  • the base stations WBS2 and WBS3 are connected by wired network, and SBS1 and WBS1 cannot communicate with each other on the wired network. Before the wireless side interface completes the coexistence contact, SBS1 cannot know the specific contact mode of the neighboring station.
  • Each base station has its own terminal connected below, and the A/B/E/G terminal is hung under WBS1, the C/F terminal is hung under WBS2, and the D/H terminal is hung under WBS3. (The terminal connected to SBS1 cannot be initialized before SBS1 works normally.)
  • the corresponding terminal in the coverage area of SBS1 has A/B/C/D, and G is in the coverage of WBS2 at the same time.
  • SBS1 starts and completes the cable and some parts of its initialization, obtains some necessary information for connecting with the neighboring station, such as the site ID of the station, selects the wireless channel, and then uses DCTFS to reach all the terminals that are reachable to the air interface (including The terminal A) sends a contact request message, where the contact request message includes information such as the ID of the SBS1;
  • the terminal A intercepts the contact request message, and sends the coexistence message report request to the original base station WBS1 after receiving the contact request message, and the qualified terminal that receives the contact request message on the DCTFS sends a coexistence message report request to the WBS1 to which the terminal belongs. ;
  • the WBS1 learns the report request, it allocates the bandwidth for reporting the coexistence message to the designated terminal and specifies that it performs coexistence message reporting. For example, if both terminals A and B apply for coexistence message reporting, WBS1 can specify that A reports it.
  • the coexistence message can also report all the terminals that apply for reporting in order;
  • the terminal A After receiving the report indication, the terminal A reports the obtained contact request message sent by the SBS1 to the WBS1;
  • the WBS selects one or more reporting terminals as coexistence contact terminals (CLSS) according to the received information, and instructs it to forward the signaling of the coexistence contact by UCTFS through a normal downlink channel.
  • CLSS coexistence contact terminals
  • the CLSS After receiving the contact message sent by the WBS, the CLSS sends the contact message to the SBS by using UCTFS;
  • the SBS learns the contact message of the neighboring WBS from the contact message forwarded by the CLSS, and then sends a coexistence message to the CLSS by using the DCTFS;
  • the CLSS will report the coexistence message received by the SBS and send it to the WBS. Since then, effective wireless communication has been established between SBS and WBS. The two parties can then begin information interactions including coexistence negotiations.
  • the present invention also provides an alternative to the present invention: using a Ranging Slot in an existing protocol or a UCTFS according to the present invention to cause a terminal to transmit an interrogation signal to a base station outside the original base station in turn.
  • Bearer terminal in the signal or mechanism Contact information of the original base station, such as an IP address.
  • the base station SBS or WBS receiving the signal will obtain the contact information of the original base station of the terminal.
  • this solution increases the burden of the Ranging Slot ranging slot, and requires uniform coordination of the Ranging slot ranging slots between the stations.
  • the present invention also provides a device for discovering a neighboring station and establishing a contact with a neighboring station at the time of initialization, and the specific implementation structure is as shown in FIG. 23, the device is disposed in the base station, and includes - (1) a contact message.
  • Text sending unit
  • the unit is configured to send a contact request message by using a DCTFS set in a downlink frame structure in the newly activated base station, and the contact message sending unit may specifically include:
  • a contact request message sending processing unit configured to send, by the DCTFS, a contact request message to a terminal in an overlapping area with the neighboring station in the newly activated base station, and send the contact request message or contact through the terminal
  • the valid information carried in the request packet is submitted to the neighboring station to which the terminal belongs;
  • the contact message receiving unit is configured to receive a contact request message received by the neighboring station to which the terminal belongs or a contact message returned after the valid information carried in the message formatted by the terminal format, that is, the contact request message received back
  • the response message of the text is submitted to the establishment of the contact processing unit.
  • the unit is configured to discover the neighboring station and establish contact with the neighboring station according to the contact information carried by the returned contact message.
  • the newly activated base station receives the contact report returned by the neighboring station through the wired path. Text. If the newly activated base station and the neighboring station to which the terminal belongs cannot communicate with each other through the wired connection, the neighboring station to which the terminal belongs selects the coexisting contact terminal, and instructs the coexisting contact terminal to use the UCTFS to represent the neighbor. The station's network sends the returned contact message to the newly activated base station.
  • the present invention also provides a system for discovering a neighboring station and establishing a contact with a neighboring station at the time of initialization, and the specific implementation structure is still as shown in FIG. 23, including a contact message sending unit and establishing a contact set in the base station. a processing unit, and a contact message relay processing unit disposed in the terminal, and a contact message response unit disposed in the neighboring base station, where:
  • the liaison message transfer processing unit is configured to submit, in the terminal, the valid information carried in the received contact request message or the contact request message to the neighboring station to which the terminal belongs, and the message is processed in transit
  • the specific processing manner of the unit includes: the terminal sending a request for reporting a coexistence message to the neighboring station to which the terminal belongs, and submitting the received contact request message after receiving the report that can be reported by the neighboring station to which the terminal belongs To the adjacent station;
  • the terminal directly submits the received contact request message to the neighboring station to which it belongs by using the remaining bandwidth originally allocated by the terminal.
  • the liaison message response unit is configured to return a liaison message to the newly activated base station according to the received contact request message or the valid information carried by the terminal format converted message in the neighboring station to which the terminal belongs. Text.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L’invention concerne un procédé de recherche de station adjacente et d’établissement de connexion avec ladite station adjacente par la BS (station de base) de coexistence lors de l’initialisation, comprenant les étapes suivantes : configuration d’une DCTFS (fréquence temporelle dédiée de coexistence de liaison descendante) dans la structure de trame de liaison descendante de la BS de coexistence ; transmission par la BS nouvellement démarrée d’un message de requête de connexion aux terminaux situés dans la zone de chevauchement avec la station adjacente en utilisant ladite DCTFS, recherche de la station adjacente et établissement d’une connexion avec la station adjacente conformément au message de connexion renvoyé. En utilisant le procédé de la présente invention, une BS de coexistence peut rapidement trouver une station adjacente et établir une connexion avec ladite station adjacente lors de l’initialisation.
PCT/CN2006/001613 2005-07-08 2006-07-07 Procédé de recherche de station adjacente et d’établissement de connexion avec ladite station adjacente par la bs de coexistence lors de l’initialisation Ceased WO2007006220A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN200510082806.0 2005-07-08
CN200510082806 2005-07-08
CN200510083972.2 2005-07-15
CNB2005100839722A CN100502548C (zh) 2005-07-08 2005-07-15 在初始化时共存性基站发现邻站并与邻站建立联络的方法

Publications (1)

Publication Number Publication Date
WO2007006220A1 true WO2007006220A1 (fr) 2007-01-18

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Country Status (2)

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CN (1) CN100502548C (fr)
WO (1) WO2007006220A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6130886A (en) * 1995-10-26 2000-10-10 Omnipoint Corporation Coexisting communication systems
CN1391414A (zh) * 2001-06-11 2003-01-15 深圳市中兴通讯股份有限公司上海第二研究所 分布式个人手持通信系统基站系统空中信道选择方法和装置
WO2004028062A1 (fr) * 2002-09-20 2004-04-01 Philips Intellectual Property & Standards Gmbh Reserve de ressources dans des reseaux de transmission

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6130886A (en) * 1995-10-26 2000-10-10 Omnipoint Corporation Coexisting communication systems
CN1391414A (zh) * 2001-06-11 2003-01-15 深圳市中兴通讯股份有限公司上海第二研究所 分布式个人手持通信系统基站系统空中信道选择方法和装置
WO2004028062A1 (fr) * 2002-09-20 2004-04-01 Philips Intellectual Property & Standards Gmbh Reserve de ressources dans des reseaux de transmission

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CN1863366A (zh) 2006-11-15

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