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WO2008110092A1 - Procédé, système et appareil d'établissement de communications entre des systèmes - Google Patents

Procédé, système et appareil d'établissement de communications entre des systèmes Download PDF

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Publication number
WO2008110092A1
WO2008110092A1 PCT/CN2008/070393 CN2008070393W WO2008110092A1 WO 2008110092 A1 WO2008110092 A1 WO 2008110092A1 CN 2008070393 W CN2008070393 W CN 2008070393W WO 2008110092 A1 WO2008110092 A1 WO 2008110092A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
relay terminal
relay
neighbor base
serving base
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2008/070393
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English (en)
Chinese (zh)
Inventor
Shulan Feng
Jinnan Liu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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
Priority claimed from CN2007100903291A external-priority patent/CN101262696B/zh
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN2008800142005A priority Critical patent/CN101755408B/zh
Publication of WO2008110092A1 publication Critical patent/WO2008110092A1/fr
Priority to US12/505,358 priority patent/US8089917B2/en
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
    • H04W74/00—Wireless channel access

Definitions

  • the present invention relates to mobile communication technologies, and more particularly to a method and system and apparatus for implementing inter-system communication. Background of the invention
  • the communication network is mainly composed of a terminal, a base station and a service network.
  • the base station is configured to implement functions such as data transmission, resource management, and control for terminals accessing the base station in the coverage area, and the base station and the terminals served by the base station form a system.
  • the communication mode between the base station and the terminal may be a wired connection mode or a wireless connection mode, and one base station may provide services for multiple terminals.
  • the topology between the base station and the terminal is point-to-multipoint, that is, the terminals that belong to the same base station generally cannot communicate directly, but the information exchange through the base station.
  • FIG. 1 is a schematic diagram of a network structure in which the existing topology is a point-to-multipoint.
  • the topology between the base station and the terminal may also be a mesh structure. In this case, the terminals of the same base station can directly communicate with each other.
  • the base station only receives the uplink signal sent by the terminal served by the base station, and does not receive the uplink signal sent by the terminal belonging to the neighbor base station.
  • the communication mode between the base station and the base station is generally a wired connection through the backbone network. , does not occupy air interface resources.
  • the base station may require the terminal it serves to send an uplink signal to the neighbor base station.
  • the terminal is equivalent to a relay station between two base stations/two systems; for example, in cognitive radio.
  • the base station may require the terminal that it serves to send some necessary cognitive signals, such as a base station identifier (ID), a terminal ID, etc., to the neighbor base station to determine Interference with the neighbor base station and interference negotiation.
  • ID base station identifier
  • a terminal ID etc.
  • the method for performing inter-system communication through terminal relay is:
  • a base station that provides services for a terminal that implements a relay function (hereinafter referred to as a relay terminal)
  • the serving base station (hereinafter referred to as the serving base station), the information to be relayed is sent to the relay terminal, and at the same time, the relay terminal is allocated a relay signal transmission resource, and the relay signal transmission resource may include a time-frequency resource, a coded modulation scheme used, and Transmit power, etc.
  • the relay terminal After receiving the information to be relayed, the relay terminal does not initiate synchronization operation with the neighbor base station, and directly sends the relay information to the neighbor base station in the allocated time-frequency resource; after the information is sent, the relay terminal does not To confirm whether the neighbor base station has correctly received the relay information.
  • the relay terminal since the relay terminal does not perform necessary uplink synchronization and power adjustment with the neighbor base station before transmitting the relay information to the neighbor base station, the relay terminal is generally in the coverage of the neighbor base station. At the edge, the channel attenuation is large, so the probability that the neighbor base station correctly receives the relay information is very low.
  • the location at which the relay terminal transmits the uplink signal and the modulation and coding scheme used are allocated by the serving base station, it is difficult for the neighbor base station to know at which position to receive the uplink signal of the relay terminal, and it is not known which demodulation is used.
  • the decoding mode receives the uplink signal of the relay terminal.
  • a pilot (Preamble) sequence may be added before the relay terminal sends the relay information to the neighbor base station.
  • Preamble sequence For synchronization and channel estimation.
  • adding the Preamble sequence will result in reduced system backward compatibility and increased base station complexity.
  • the embodiments of the present invention provide a method for implementing inter-system communication, which can improve the correct receiving rate of the relay information by the neighboring base station.
  • the embodiment of the invention provides a system for implementing inter-system communication, which can improve the correct receiving rate of the relay information by the neighboring base station.
  • the embodiments of the present invention provide a device for implementing inter-system communication, and the device can improve the correct receiving rate of the relay information by the neighboring base station.
  • a method of implementing inter-system communication comprising:
  • the terminal receives the request of the access neighbor base station sent by the serving base station, and accesses the neighbor base station as a relay terminal;
  • the relay terminal receives relay information, and communicates with the serving base station and the neighbor base station according to the relay information.
  • a method of implementing inter-system communication comprising:
  • the serving base station selects a relay terminal, and sends an access neighbor base station request to the relay terminal;
  • the serving base station transmits relay information to the relay terminal to communicate with the relay terminal.
  • a system for implementing inter-system communication comprising: a serving base station, a relay terminal, and a neighbor base station;
  • the serving base station is configured to select a relay terminal, send an access neighbor base station request to the relay terminal, and send the relay information to the relay terminal after the relay terminal accesses the neighbor base station Communicating with the relay terminal;
  • the neighboring base station is configured to access the relay terminal, and send the relay information to the relay terminal to communicate with the relay terminal;
  • the relay terminal is configured to, after receiving the request from the access neighbor base station of the serving base station, access the neighbor base station as a relay terminal; and receive relay information from the serving base station or the neighbor base station Obtaining, according to the relay information, the serving base station and the neighbor base station Line communication.
  • a device for implementing communication between systems comprising: an access neighbor base station module and a communication module;
  • the access neighbor base station module is configured to receive an access neighbor base station request from the serving base station, and access the neighbor base station as a relay terminal;
  • the communication module is configured to receive relay information from the serving base station or a neighbor base station, and communicate with the serving base station and the neighbor base station according to the relay information.
  • the relay terminal receives the request of the access neighbor base station sent by the serving base station, and accesses the neighbor base station as the relay terminal; after that, the relay terminal receives the relay information, and according to the received The relay information communicates with the serving base station and the neighbor base station.
  • the relay terminal does not perform necessary uplink synchronization and power adjustment with the neighbor base station before transmitting the relay information to the neighbor base station, and the probability that the neighbor base station correctly receives the relay information is low.
  • the relay terminal before transmitting the relay information to the neighboring base station, the relay terminal first accesses the neighbor base station, that is, performs necessary synchronization and power adjustment operations with the neighbor base station, thereby improving the relay information of the neighbor base station.
  • the correct rate of reception BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a schematic diagram of a network structure of a point-to-multipoint structure of an existing topology
  • FIG. 3 is a schematic diagram of a time sharing manner in an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a time sharing manner in a wireless communication system according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a preferred embodiment of the method according to the present invention
  • 6 is a schematic structural diagram of a system embodiment of the present invention
  • Figure 7 is a schematic view showing the structure of a preferred embodiment of the system of the present invention. Mode for carrying out the invention
  • the serving base station sends an access neighbor base station request to the selected relay terminal, and the relay terminal receives the access neighbor base station request, and accesses the neighbor base station as a relay terminal;
  • the relay terminal receives the relay information, and communicates with the serving base station and the neighbor base station according to the relay information.
  • Step 201 The serving base station detects whether there is a terminal in the current system that has established a connection relationship with itself and a neighboring base station, and if yes, Selecting the terminal as a relay terminal, otherwise, selecting a relay terminal from the terminals served by the terminal, and transmitting an access neighbor base station request to the selected relay terminal; the relay terminal receiving the access neighbor base station request, and As a relay terminal access to the neighbor base station.
  • the manner in which the serving base station selects the relay terminal from the terminals served by the serving base station is: if the serving base station specifies the neighboring base station to be communicated in advance, the serving base station selects the integrated communication performance from the common coverage area of the neighboring base station and the neighboring base station to meet the requirements.
  • the terminal serves as a relay terminal; if the serving base station does not specify a neighbor base station to be communicated, the serving base station selects a terminal whose integrated communication performance meets the requirements from the common coverage area of itself and any neighbor base station as the relay terminal. As long as the conditions are met, the serving base station can select all of the serving terminals in the common coverage area of the serving base station and any neighboring base stations as relay terminals.
  • the terminal that meets the requirements herein may refer to a terminal that meets the judgment of the signal energy of the neighboring base station that meets the small amount of traffic with the serving base station.
  • the serving base station sends the access neighbor base station request to the relay terminal, and simultaneously allocates the time for accessing the neighbor base station to the relay terminal, and the time allocation principle of the access neighbor base station does not affect the relay terminal.
  • the access neighbor base station time may be a continuous time or a plurality of time periods, but the duration is such that the relay terminal can complete a complete access process with the neighbor base station, including synchronization and connection required for correct data transmission. Into the process.
  • the necessary access procedures include a downlink physical layer synchronization process, a media access control (MAC) layer synchronization process, a process of acquiring transmission parameters, and an initial ranging process.
  • the neighbor base station allocates a basic link identifier (CID) and a primary management CID to the relay terminal.
  • the relay terminal may also perform capability negotiation, authentication, and registration with the neighbor base station.
  • the relay terminal is capable of normal communication with the serving base station outside of the allocated access neighbor base station time. It should be noted that, in the access process, the relay terminal needs to notify the neighboring base station that it is not the terminal that requests the neighbor base station to serve, but the terminal that is temporarily accessed for the inter-system communication relay information.
  • the neighboring base station treats the relay terminal as the terminal that it serves, it causes problems such as routing errors when the relay terminal performs service transmission.
  • the neighboring base station needs to distinguish whether the accessed terminal is a relay terminal or a general terminal, and does not establish a service link for the relay terminal.
  • the relay terminal accesses the neighbor base station as a relay terminal during the allocated neighbor base station access time. If the access is successful, the relay terminal sends an access neighbor base station success message to the serving base station; if the access neighbor base station fails, the relay terminal sends an access neighbor failure message to the serving base station.
  • the relay terminal may feed back the reason for the failure of the accessing neighboring base station to the serving base station. The reason may be that physical layer synchronization cannot be established, MAC layer synchronization cannot be established, uplink MAC layer parameters cannot be obtained, and the downlink MAC layer cannot be obtained. Parameters, ranging process failed, etc.
  • the serving base station will follow the previous The selection method mentioned re-selects a new relay terminal or stops the current relay communication.
  • the terminal may also complete the access process with the neighboring base station before receiving the synchronization request of the serving base station:
  • each terminal to which the serving base station belongs may take the initiative in each idle period.
  • the terminal accesses each neighboring base station in the network, and saves the corresponding parameters, the terminal can actively send the message that the neighboring base station succeeds to its own serving base station.
  • the serving base station may prefer a terminal that has accessed the neighbor base station as a relay terminal. In this way, when inter-system communication is required, the neighbor base station access procedure does not need to be performed, thereby saving access time.
  • Step 202 The relay terminal receives the relay information, and performs communication with the serving base station and the neighbor base station according to the relay information.
  • the relay information received by the relay terminal may be from a serving base station or from a neighbor base station. Moreover, after receiving the relay information sent by the serving base station or the neighbor base station, the relay terminal may choose to send back the success response information to the serving base station or the neighbor base station, or may not send back the response information.
  • the serving base station or the neighbor base station will resend the relay information to the relay terminal; If the retransmission is repeated multiple times, and the number of retransmissions has exceeded the predetermined number of retransmissions, and the response message is still not received, the serving base station will reselect the relay terminal, and the neighbor base station will consider that the relay request fails, and the communication process ends. .
  • the serving base station allocates the inter-system communication time to the relay terminal while transmitting the relay information, so that the relay terminal transmits the request message to the neighbor base station.
  • the relay terminal After receiving the relay information sent by the serving base station, the relay terminal requests the transmission resource from the neighbor base station, and sends the relay information to the neighbor base station in the transmission resource allocated by the neighbor base station, and, in the process, relaying The terminal maintains normal communication with the serving base station.
  • the neighboring base station may send back a success response message to the relay terminal, or may not send a response message to the neighboring base station.
  • Relay terminal After receiving the successful reception response message sent by the neighboring base station, the relay terminal may relay to the serving base station or may not relay to the serving base station.
  • the relay terminal and the neighbor base station perform a normal ranging process to ensure transmission quality.
  • the relay terminal If the relay terminal interrupts the communication with the neighbor base station due to the physical layer out-of-synchronization, the MAC layer out-of-synchronization or the ranging failure, the relay terminal reports the access neighbor base station failure message to the serving base station. After receiving the access neighbor base station failure message of the relay terminal, the serving base station reselects the relay terminal or ends the relay communication process.
  • the neighbor base station may also actively send the relay information to the relay terminal, requesting the relay terminal to relay the relay message to the serving base station.
  • the relay request procedure initiated by the neighboring base station is similar to the relay request procedure initiated by the serving base station, except that the relay terminal may not request additional relay information transmission resources from the serving base station, but allocates it to the serving base station for other purposes.
  • the relay information is sent in the uplink transmission resource.
  • the serving base station may terminate the relay function of the relay terminal.
  • another service terminal is selected as the relay terminal.
  • the serving base station After the communication process ends, the serving base station sends a relay transmission end request to the relay terminal, and after receiving the relay transmission end request, the relay terminal sends a relay transmission end request to the neighbor base station, and the neighbor base station is correspondingly released as the middle.
  • the resources allocated by the terminal and the context information saved for the relay terminal Alternatively, the neighbor base station sends a relay transmission end request to the relay terminal, and after receiving the relay transmission end request, the relay terminal sends a relay transmission end request to the serving base station, and the serving base station ends the inter-system communication process accordingly.
  • the neighbor base station or the relay terminal automatically terminates the communication process according to the rules set by itself: if, for example, the neighbor base station exceeds the predetermined schedule If the time has not communicated with the relay terminal, the resource allocated for the relay terminal and the context information saved for the relay terminal are automatically released; or the relay terminal does not receive the slave base station or neighbor from the serving base station for more than a predetermined time.
  • the relay information of the base station requires the neighbor base station to release the allocated resources and the saved context information.
  • the relay terminal After receiving the end-to-system communication process end request from the serving base station or the neighbor base station, the relay terminal releases the link established with the neighbor base station and the context information saved for the link.
  • the relay terminal may request the neighboring base station to release the allocated resources and the saved context information after each transmission of the relay information. Alternatively, after all the relay information is sent, the neighbor base station is requested to release the allocated resources and the saved context information.
  • the relay terminal needs to implement communication with two base stations, that is, the serving base station and the neighboring base station. Accordingly, the relay terminal needs to maintain two sets of resource allocation parameters and physical layer configuration parameters, including: Power adjustment amount, timing adjustment amount, frequency adjustment amount, and assigned logical channel number of the base station. The relay terminal will adopt different parameters when communicating with two different base stations.
  • the serving base station and the neighbor base station can work at the same frequency or at different frequencies.
  • the relay terminal can communicate with the two base stations in a time-sharing or frequency-dividing manner, but no matter which communication method is used, it needs to be guaranteed to be reserved.
  • the time of the relay terminal is sufficient for the relay terminal to complete communication with the neighbor base station, that is, inter-system communication, and at the same time, cannot affect normal service transmission between the relay terminal and the serving base station.
  • the serving base station may randomly or periodically One or more time slots in one or more frames are allocated to the relay terminal for establishing communication with the neighbor base station; or the serving base station assigns a specific time period to the relay terminal according to a preset rule. Used to establish communication with neighboring base stations, such as Common Signaling Interval (CSI) or Common Message Interval (CMI) or Common Control Channel (CXCC).
  • CSI Common Signaling Interval
  • CMI Common Message Interval
  • CXCC Common Control Channel
  • FIG. 3 is a schematic diagram of the time sharing manner in this case.
  • Inter-system communication start frame The start frame number that can be assigned to the relay terminal for inter-system communication;
  • Inter-system communication duration The inter-system communication process, that is, the continuous frame length at which the relay terminal communicates with the serving base station and the neighbor base station at the same time. If set to a special value, such as 0, it means that the inter-system communication is always performed according to the method until The base station terminates the inter-system communication by other means;
  • Interval between consecutive two inter-system communication frames Inter-frame space between two consecutive inter-system communication frames containing inter-system communication time-frequency blocks;
  • Inter-system communication time-frequency block Inter-system communication time-frequency block in each system communication frame, there may be one or more inter-system communication time-frequency blocks in an inter-system communication frame, and inter-system communication time-frequency block Can be a whole frame.
  • the relay terminal in a time sharing manner, can communicate with the serving base station during the primary subframe and/or the common subframe of the serving base station; and the secondary subframe of the serving base station and the neighbor base station The primary subframe communicates with the neighbor base station.
  • the serving base station does not send a downlink signal to the relay terminal, nor does it allocate uplink resources to the relay terminal.
  • FIG. 4 is a schematic diagram of a time sharing manner in a wireless communication system according to an embodiment of the present invention.
  • the serving base station immediately updates the allocation mode of the inter-system communication, that is, the serving base station can notify the relay terminal of the current frame or the inter-system time-frequency block of the next frame or the following N frames randomly or according to a certain period, and can be used between systems. Communication, within the time-frequency block, the relay terminal may not communicate with the serving base station, but only with the neighbor base station. One or more intersystem time-frequency blocks may be included in one frame.
  • a fixed number of time slots are set, for example, frames starting from ls, 2s, 4s, 8s are used for inter-system communication, In these frames, the relay terminal may not communicate with the serving base station but only with the neighbor base station.
  • the relay terminal communicates with two base stations by means of frequency division, it is necessary to set two sets of transceivers in the relay terminal.
  • the relay terminal can also establish communication with two base stations at the same time by other multiplexing methods, such as code division, and is not introduced.
  • the relay terminal can receive the frame header or the subframe header of the neighbor base station in the allocated inter-system communication area, that is, it can be like
  • the relay terminal obtains the downlink physical layer frame synchronization by searching the frame header and the subframe header of the neighbor base station, and parses the message of the neighbor base station's frame header or subframe header to obtain the corresponding MAC.
  • the layer message and sends an uplink signal in the uplink resource allocated by the neighboring base station.
  • the neighbor base station can allocate the necessary logical channel number, such as the basic CID and the primary management CID, to the relay terminal.
  • the relay terminal accesses, it needs to indicate that it is a relay terminal, so that the neighbor base stations can distinguish.
  • the relay terminal can periodically communicate with the neighbor base station during the primary subframe of the neighbor base station, and the primary subframe of the serving base station. And/or communicating with the serving base station during a common subframe, this time sharing method has better backward compatibility.
  • the relay terminal cannot normally receive the frame header and the subframe header of the neighbor base station, for example, the method of using the CXCC time slot for inter-system communication defined in the wireless communication in this embodiment, when the downlink CXCC is used
  • the downlink signal sent by the slot does not start at the frame header of the neighbor base station, and the uplink CXCC time slot and the downlink CXCC time slot interval are far apart, which is about 100 ms.
  • the neighbor base station needs to send the downlink inter-system communication message, including the Preamble of the neighbor base station and the necessary MAC layer information, and allocate the initial ranging resource to the relay terminal. .
  • the relay terminal In the uplink CXCC time slot corresponding to the neighbor base station, the relay terminal sends an uplink inter-system communication message, and the transmission mode follows the previously received neighbor base station indication. In this manner, the relay terminal does not synchronize to the frame header or the subframe header of the neighbor base station, and the relay terminal completes physical layer synchronization and MAC layer synchronization in a downlink CXCC time slot of the neighbor base station, and the manner is to the relay terminal.
  • the capability requirement is higher, but since the relay terminal does not need to establish frame synchronization with the neighbor base station, the flexibility is large.
  • FIG. 5 is a flow chart of a preferred embodiment of the method of the present invention.
  • the relay information received by the relay terminal is from the serving base station, and the serving base station needs to select the relay terminal before initiating inter-system communication.
  • the following steps are included:
  • Step 501 The serving base station selects one or several terminals from the terminals served by the serving base station as the relay terminal.
  • the selection mode is: if the serving base station has specified a neighbor base station to be relayed, the serving base station selects a suitable relay terminal from the terminals in the common coverage area of itself and the neighbor base station, and the selected terminal must be correct.
  • the signal received by the serving base station must be able to receive the signal of the neighbor base station, and the serving base station comprehensively considers the service condition of the qualified terminal and the quality of the signal of the receiving neighbor base station, and selects the optimal one or several terminals as the Relay terminal. If the serving base station does not specify the neighbor base station to be relayed, the serving base station comprehensively compares the service status of each terminal served by itself and the available resources, and selects the best one or several as the relay terminal.
  • the selected relay terminal After receiving the relay information sent by the serving base station, the selected relay terminal broadcasts the relay information to each neighboring base station in the network, and each neighboring base station How to receive the relay information and how to deal with it is not described.
  • the serving base station has designated a neighbor base station to be relayed, and only one terminal is selected as the relay terminal.
  • the serving base station sends an access neighbor base station request to the relay terminal.
  • the serving base station allocates the access neighbor base station time to the relay terminal. During this time, the serving base station does not send a signal to the relay terminal, and does not receive the uplink signal of the relay terminal. In general, this allocation should not affect the normal service QoS of the relay terminal.
  • the allocated access neighbor base station time must be long enough for the relay terminal and the neighbor base station to receive the information correctly.
  • the access neighbor base station time may be a continuous period of time, or may include several periods of time. The relay terminal should maintain normal communication with the serving base station outside of the allocated synchronization time.
  • Step 503 After receiving the request of the access neighbor base station, the relay terminal attempts to access the neighbor base station as a relay terminal.
  • the relay terminal performs necessary access procedures with the neighbor base station within the allocated access time, and the process includes synchronization and access procedures necessary for correct data transmission, and at the same time, relaying
  • the terminal needs to notify the neighboring base station that it is not its own terminal in the access process, but is a terminal that is temporarily accessed for relaying messages.
  • Step 504 The process of accessing the neighbor base station fails in step 503, and the relay terminal sends an access neighbor base station failure message to the serving base station.
  • the relay terminal may feed back the cause of the failure of the access neighbor base station to the serving base station.
  • Step 505 The serving base station reselects the relay terminal.
  • the serving base station After receiving the access neighbor base station failure message sent by the relay terminal, the serving base station reselects the new relay terminal, and the specific selection manner is the same as that described in step 501. In this step, the serving base station selects a terminal with a sub-optimal communication performance as a new relay terminal.
  • Step 506 The serving base station sends a neighbor base station access request to the reselected relay terminal.
  • the relay terminal in this step and the following is different from the relay terminal in steps 501 to 504 (one is optimal in integrated communication performance, and the other is sub-optimal).
  • the new relay terminal is still referred to as a relay terminal.
  • Steps 507 ⁇ 508 The relay terminal performs the access process with the neighbor base station as the relay terminal, and sends the access neighbor base station success message to the serving base station after the access neighbor base station succeeds.
  • Steps 509 ⁇ 510 The serving base station sends the relay transmission information to the relay terminal. After successfully receiving the relay transmission information, the relay terminal sends the response information to the serving base station.
  • the serving base station allocates the necessary inter-system communication time for the relay terminal, so that the relay terminal communicates with the neighbor base station. During this time, the serving base station will not send a signal to the relay terminal, nor will it receive the uplink signal of the relay terminal. In general, this allocation should not affect the normal service QoS of the relay terminal; The communication time should be long enough for the relay terminal and the neighbor base station to correctly send and receive information.
  • the inter-system communication time can be continuous for a period of time or can include several periods of time.
  • the relay terminal should maintain normal communication with the serving base station in addition to the communication time between the assigned systems.
  • Steps 511 ⁇ 512 The relay terminal requests the transmission resource from the neighbor base station, and the neighbor base station sends the transmission resource allocated for the relay terminal to the relay terminal.
  • Step 513 The relay terminal sends the relay information to the neighbor base station by using the allocated transmission resource.
  • Step 514 After successfully receiving the relay information sent by the relay terminal, the neighbor base station sends back response information to the relay terminal, and completes relaying information from the serving base station to the neighbor base station. Process.
  • Steps 509 to 514 are processes for receiving, by the relay terminal, relay information from the serving base station, and transmitting the relay information to the neighboring base station to implement communication; as described above, the relay terminal may also receive the slave base station. Relay information, and send the relay information to the serving base station, as shown in steps 515 ⁇ 520:
  • Steps 515 ⁇ 516 The neighbor base station sends the relay information to the relay terminal, and requests the relay terminal to send the relay message to the serving base station. After receiving the relay information, the relay terminal sends back a successful reception response message to the neighbor base station.
  • Steps 517 to 520 The relay terminal applies for uplink transmission resources to the serving base station during the communication process with the serving base station, and sends the relay information in the allocated uplink transmission resource. After receiving the relay message, the serving base station sends the relay message. Successfully received a response message to the neighbor base station.
  • step 509 514 is repeated; if the neighbor base station needs to send the relay message again, steps 515 ⁇ 520 are repeated until all the relay information is sent.
  • Steps 521 to 522 The serving base station sends a relay transmission end request to the relay terminal, and after receiving the relay transmission end request, the relay terminal sends a relay transmission end request to the neighbor base station.
  • Step 523 After receiving the relay transmission end request sent by the relay terminal, the neighbor base station releases the resource allocated for the relay terminal and the saved context information.
  • step 524 can be further included: the relay terminal releases the information of the maintained neighbor base station.
  • FIG. 6 is a schematic structural diagram of a system embodiment of the present invention.
  • the system mainly includes: a serving base station 601, a relay terminal 602, and a neighbor base station 603.
  • the serving base station 601 is configured to detect whether there is an existing system and a neighbor in the current system.
  • the base station 603 establishes a connection relationship terminal, if yes, selects the terminal as a relay terminal; otherwise, selects a relay terminal from the terminals served by itself; and transmits an access neighbor base station to the selected relay terminal 602.
  • the relay terminal 602 is configured to access the neighbor base station 603 as a relay terminal after receiving the request from the access neighbor base station of the serving base station 601, or actively access the neighbor base station 603 as a candidate relay terminal, and receive the The relay information of the serving base station 601 or the neighbor base station 603 communicates with the serving base station 601 and the neighbor base station 603 according to the relay information;
  • the neighbor base station 603 is configured to access the relay terminal 602, and send the relay information to the relay terminal 602, communicate with the relay terminal 602, and communicate with the service terminal 601 through the relay terminal 602.
  • the serving base station 601 is further configured to: receive an access neighbor base station success message or a neighbor base station failure message from the relay terminal 602, and reselect the relay terminal or stop the receiving when the access neighbor base station failure message is received. Communication process.
  • the serving base station 601 is further configured to: receive a response message from the relay terminal 602 for successfully receiving the relay information, but if the response message is not received within a predetermined time, retransmit the relay information to the relay terminal 602, and Re-selecting the relay terminal when the response message from the relay terminal 602 has not been received after the predetermined number of retransmissions is exceeded;
  • the neighbor base station 603 is further configured to: receive a response message from the relay terminal 602 for successfully receiving the relay information, but if the response message is not received within a predetermined time, retransmit the relay information to the relay terminal 602; When the response message from the relay terminal 602 has not been received for more than the predetermined number of retransmissions, the relay request is considered to have failed, and the communication process is ended.
  • the serving base station 601 is further configured to: send, by the relay terminal 602, a relay transmission end request to the neighbor base station 603; the neighbor base station 603 is further configured to receive the relay terminal 602. Contextual information.
  • the neighbor base station 603 is further configured to use the context information of the relay terminal 602 to the serving base station 601; the serving base station 601 is further configured to receive the relay transmission end request from the relay terminal 602.
  • the relay terminal 602 includes: an access neighbor base station module 6021 and a communication module 6022. As shown in FIG. 7, FIG. 7 is a schematic structural diagram of a system according to a preferred embodiment of the present invention.
  • the access neighbor base station module 6021 is configured to receive an access neighbor base station request from the serving base station 601, and after receiving the request from the access neighbor base station, access the neighbor base station 603 as a relay terminal;
  • the communication module 6022 is configured to receive relay information from the serving base station 601 or the neighbor base station 603, and communicate with the serving base station 601 and the neighbor base station 603 according to the relay information.
  • the relay terminal 602 further includes a first response module 6023 for monitoring the status of the access neighbor base station module 6021, and if the neighbor base station is successfully accessed, sending the access neighbor base station success message to the serving base station 601; otherwise, the service is provided.
  • the base station 601 sends an access neighbor base station failure message.
  • the relay terminal 602 further includes a second response module 6024, configured to monitor whether the communication module 6022 successfully receives the relay information from the serving base station 601 or the neighbor base station 603, and monitors that the communication module 6022 successfully receives the service base station. After the relay information of the 601 or the neighbor base station 603, the service base station 601 or the neighbor base station 603 transmits a successful reception relay information response message.
  • the relay terminal 602 further includes a relay transmission end module 6025 for receiving a relay transmission end request from the serving base station 601 and transmitting it to the neighbor base station 603; or receiving a relay transmission end request from the neighbor base station 603 and transmitting to Serving base station 601.
  • the relay terminal 602 further includes a resource release module 6026 for receiving from the middle Following the relay transmission end request of the transmission end module 6025, the link established with the neighbor base station 603 and the context information maintained for the link are released.
  • the serving base station preselects the terminal with the best integrated communication performance as the relay terminal to transmit the relay information, and synchronizes with the neighbor base station before the relay terminal communicates with the neighbor base station.
  • the relay terminal is at the edge of the base station, and the signal strength is weak and unsynchronized, so that the probability that the neighboring base station can correctly receive the relay information is low, and the solution in the embodiment of the present invention can improve the neighbor base station better. The correct rate of reception of relay information.
  • the relay terminal can still perform normal communication with the serving base station during the communication with the neighbor base station, and only needs to select an appropriate communication mode.
  • the solution in the embodiment of the present invention has less modification to the existing base station and the terminal, and the backward compatibility is good.

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

Abstract

Cette invention concerne un procédé visant à établir des communications entre des systèmes. Une station de base de service sélectionne un équipement de répéteur et envoie une demande d'accès de la station de base avoisinant l'équipement du répéteur sélectionné; cet équipement de répéteur reçoit la demande d'accès de la station de base avoisinante et possède l'accès à la station de base avoisinante en tant qu'équipement de répéteur; l'équipement de répéteur reçoit l'information relais et communique avec la station de base de service et la station de base avoisinante sur la base de ces informations relais. Cette invention concerne également un système et un appareil visant à établir des communications entre des systèmes. L'application du procédé, du système et la mise en oeuvre de l'appareil pourraient améliorer la vitesse de réception des informations relais de la station de base avoisinante.
PCT/CN2008/070393 2007-03-09 2008-03-03 Procédé, système et appareil d'établissement de communications entre des systèmes Ceased WO2008110092A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2008800142005A CN101755408B (zh) 2007-03-09 2008-03-03 实现系统间通信的方法和系统以及设备
US12/505,358 US8089917B2 (en) 2007-03-09 2009-07-17 Method, system and apparatus of implementing inter-system communications

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN200710088038.9 2007-03-09
CN200710088038 2007-03-09
CN2007100903291A CN101262696B (zh) 2007-03-09 2007-04-04 一种实现系统间通信的方法和系统以及终端设备
CN200710090329.1 2007-04-04

Related Child Applications (1)

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US12/505,358 Continuation US8089917B2 (en) 2007-03-09 2009-07-17 Method, system and apparatus of implementing inter-system communications

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WO2008110092A1 true WO2008110092A1 (fr) 2008-09-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110222460A1 (en) * 2008-11-05 2011-09-15 Alcatel Lucent Synchronisation method between base stations, radio communication system and base station thereof

Citations (1)

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Publication number Priority date Publication date Assignee Title
CN1918924A (zh) * 2004-06-03 2007-02-21 松下电器产业株式会社 无线网络控制系统、无线网络控制设备和基站

Patent Citations (1)

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CN1918924A (zh) * 2004-06-03 2007-02-21 松下电器产业株式会社 无线网络控制系统、无线网络控制设备和基站

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110222460A1 (en) * 2008-11-05 2011-09-15 Alcatel Lucent Synchronisation method between base stations, radio communication system and base station thereof
US9137671B2 (en) * 2008-11-05 2015-09-15 Alcatel Lucent Synchronisation method between base stations, radio communication system and base station thereof

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