WO2010000094A1 - Procédé et dispositif de régulation des ressources dans un terminal mobile d’un réseau de retransmission sans fil - Google Patents

Procédé et dispositif de régulation des ressources dans un terminal mobile d’un réseau de retransmission sans fil Download PDF

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Publication number
WO2010000094A1
WO2010000094A1 PCT/CN2008/001256 CN2008001256W WO2010000094A1 WO 2010000094 A1 WO2010000094 A1 WO 2010000094A1 CN 2008001256 W CN2008001256 W CN 2008001256W WO 2010000094 A1 WO2010000094 A1 WO 2010000094A1
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WO
WIPO (PCT)
Prior art keywords
mobile terminal
relay station
message
network device
resource
Prior art date
Application number
PCT/CN2008/001256
Other languages
English (en)
Chinese (zh)
Inventor
冷晓冰
王栋耀
刘继民
沈钢
Original Assignee
上海贝尔阿尔卡特股份有限公司
阿尔卡特朗讯
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海贝尔阿尔卡特股份有限公司, 阿尔卡特朗讯 filed Critical 上海贝尔阿尔卡特股份有限公司
Priority to CN200880129438.2A priority Critical patent/CN102084604B/zh
Priority to PCT/CN2008/001256 priority patent/WO2010000094A1/fr
Publication of WO2010000094A1 publication Critical patent/WO2010000094A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603—Arrangements for wireless physical layer control
    • H04B7/2606—Arrangements for base station coverage control, e.g. by using relays in tunnels

Definitions

  • the present invention relates to a wireless relay network, and more particularly to a method and apparatus for scheduling resources for a mobile terminal under the jurisdiction of a relay station in a wireless relay network.
  • IEEE 802.16j two types of relays are defined: transparent relays and opaque relays.
  • Transparent relay can only be used to improve the throughput of mobile terminals at the cell edge and increase the capacity of the system. It does not expand the coverage of the cell. Therefore, in a wireless relay network, the mobile terminal under the transparent relay must be located within the coverage of the base station. The mobile terminal under the transparent relay directly acquires control information from the base station, where the control information includes information such as a preamble symbol and a mapping table.
  • a centralized resource scheduling mechanism is adopted in a transparent relay network, and system resources are uniformly scheduled by the base station.
  • An opaque relay can increase the capacity of the system and expand the coverage of the cell. Therefore, in a wireless relay network, the mobile terminal under the opaque relay does not need to be located in the coverage of the base station.
  • An opaque relay not only relays data information, but also directly transmits control information.
  • the base station can schedule resources, but also the opaque relay can manage resources.
  • the resources are dynamically allocated to the corresponding mobile terminals through coordination between the base station and the relay station, so as to reduce the burden on the base station. Optimize resource allocation and improve system performance.
  • a centralized resource scheduling mechanism In an opaque relay network, either a centralized resource scheduling mechanism or a distributed resource scheduling mechanism may be employed.
  • a distributed mechanism mobile terminals in a service area first send their resource allocation request messages to the relay stations they serve, and then the relay station processes all the received resource allocation request messages and sends them to the base station. After granting certain resources, the relay station is notified, and the relay station allocates resources to the proposed according to the scheduling algorithm. The mobile terminal that requests the resource allocation.
  • the distributed station can quickly and accurately obtain information such as resources and channel conditions in its coverage area, which can shorten the delay of resource request and utilize wireless resources more effectively.
  • FIG. 1 shows a typical application scenario of an opaque relay according to the prior art.
  • the "radio resources occupied by the base station and the resources allocated by the base station for which the relay station and the mobile terminal under its jurisdiction are allocated” are simply referred to as "the network equipment of the base station.”
  • the part of the resource referred to as "relay resources”.
  • the figure shows a mobile terminal 10, a mobile terminal 11, a mobile terminal 12, a relay station 20, and a base station 30.
  • the relay station 20 is an opaque relay.
  • mobile terminals within the opaque relay coverage always use relay resources to implement transmission of data information with the relay station, and these mobile terminals can only obtain control from the opaque relay. information.
  • the mobile terminal 10 and the mobile terminal 11 within the coverage area utilize relay resources to implement transmission of data and control information with the relay station 20.
  • the downlink channel/quantity between the base station 30 and the mobile terminal 10 may be sufficiently good enough to support the downlink control. Transmission of information.
  • the downlink channel cannot be used to transmit downlink control information, and at the same time, the base station resource cannot be transmitted on the channel between the relay station 20 and the mobile terminal 10.
  • Data information which causes when the load between the relay station 20 and the base station 30 is unbalanced, for example, Following the station 20, the load is heavy, and the base station 30 is very lightly loaded.
  • the relay station 20 cannot use the resources of the base station 30 to carry the load, so that the radio resources of the entire wireless system cannot be reasonably used. Summary of the invention
  • the present invention provides a method for scheduling resources for a mobile terminal under the jurisdiction of a relay station in a wireless multi-hop relay network, wherein the relay station is under the jurisdiction of the network device.
  • the network device may be a higher-level relay station of the relay station, or may be a base station.
  • the mobile terminal detects the signal quality of the downlink signal from the network device, and if the detected signal quality meets the predetermined condition, the mobile terminal sends a first notification message to the network device, where the first notification message is used to indicate the location
  • the network device The mobile terminal is located in the coverage of the network device.
  • the predetermined condition may include: a signal to noise ratio of the downlink signal is greater than a predetermined signal to noise ratio threshold, or a signal to interference and noise ratio of the downlink signal is greater than a predetermined signal to interference and noise ratio threshold, or a signal strength of the downlink signal is greater than a predetermined signal strength threshold .
  • the network device After receiving the first notification message from the mobile terminal, the network device processes the resource allocation of the mobile terminal based on the total amount of idle resources borne by the network device and the idle total amount of radio resources borne by the relay station. If the total amount of idle radio resources allocated by the network device is rich, and the total amount of radio resources allocated by the relay station is relatively scarce, preferably, the network device may allocate the mobile terminal from the radio resources it occupies. Resources.
  • the network device will inform the relay station to allocate resources for the mobile terminal using its allocated radio resources.
  • the mobile terminal still detects the signal quality of the downlink signal from the network device. If the detected signal quality does not meet the predetermined condition, the second notification message is sent to the network device, where the second notification message is used to indicate the Network device. The mobile terminal is located outside the coverage of the network device. After the network device receives the second notification message from the mobile terminal, the network device will notify the relay station to utilize the radio resource it occupies. Allocate resources for the mobile terminal.
  • a method for scheduling resources for a mobile terminal under the jurisdiction of a relay station in a network device of a wireless multi-hop relay network wherein the relay station is under the jurisdiction of the network device, The method includes the following steps: a. receiving a first notification message that is forwarded by the mobile terminal via the relay station, where the first notification message is used to indicate that the mobile terminal of the network device is located within the coverage of the network device And b. processing resource allocation of the mobile terminal based on an idle total amount of radio resources borne by the network device and an idle total amount of radio resources borne by the relay station.
  • a method for coordinating resources with a network device for scheduling resources for a mobile terminal in a relay station of a wireless multi-hop relay network wherein the relay station is the network device
  • the method is as follows: The method includes the following steps: A. receiving a second control message from the network device, where the second control message is used to indicate that the relay station utilizes the a radio resource borne by the network device and the mobile terminal transmitting data information and control information other than the first synchronization message and the first resource-related message; B.
  • a method for assisting a network device in scheduling resources for a mobile terminal in a mobile terminal managed by a relay station of a wireless multi-hop relay network wherein the relay station is the network
  • the method includes the following steps: m. detecting a signal quality of a downlink signal from the network device; n. transmitting a first notification message to the network device if the signal quality meets a predetermined condition, where The first notification message is used to indicate that the network device is located in the network device coverage area.
  • a scheduling apparatus for scheduling resources for a mobile terminal under the jurisdiction of a relay station in a network device of a wireless multi-hop relay network, wherein The scheduling device is controlled by the network device, and the scheduling device includes: a first receiving device, configured to receive a first notification message that is forwarded by the mobile terminal by using the relay station, where the first notification message is used to indicate The mobile device of the network device is located in the coverage of the network device; and the distributing device is configured to process, according to the idle total amount of the radio resources and the idle amount of the radio resources that are controlled by the relay device, Resource allocation for mobile terminals.
  • a cooperative scheduling apparatus for coordinating resources with a network device for scheduling resources in a relay station of a wireless multi-hop relay network, wherein the relay station is the network The device is controlled by the device, and the mobile terminal is controlled by the relay station, and the cooperative scheduling device includes: a third receiving device, configured to receive a second control message from the network device, where the second control message is used by Instructing the relay station to use the radio resource borne by the network device and the mobile terminal to transmit data information and control information other than the first synchronization message and the first resource-related message; the first transmission device is configured to use the network device Transmitting, by the mobile terminal, the data information and the transmission of the control information other than the first synchronization message and the first resource-related message; wherein the first synchronization message is used by the mobile terminal and the network device Synchronizing, the first resource related message is used to indicate that the mobile terminal and the relay station enter A resource that is directly allocated by the network device for line communication.
  • an auxiliary scheduling apparatus for assisting a network device to schedule resources for a mobile terminal in a mobile terminal managed by a relay station of a wireless multi-hop relay network
  • the relay station is
  • the auxiliary scheduling device includes: a first detecting device, configured to detect a signal quality of a downlink signal from the network device; and a fifth transmitting device, configured to: if the signal quality meets a predetermined condition, Sending a first notification message to the network device, where the first notification message is used to indicate that the network device is located in the network device coverage area.
  • the network device can determine, according to the notification message from the mobile terminal, whether the mobile terminal is located within its coverage. If the mobile terminal is located within the coverage of the network device, the network device can be based on its current load. The status and the load status of the relay station determine whether or not to allocate resources for the mobile terminal by itself.
  • the network device can directly allocate resources for the mobile terminal from the radio resources it controls. After the network device completes resource allocation, the mobile terminal can directly utilize the resources of the network device to transmit data information between the relay station, and no longer use the resource directly allocated by the relay station to transmit data information between the relay station.
  • the network device can notify the relay station to directly allocate resources to the mobile terminal by using the radio resources it dictates.
  • the network device determines that the mobile terminal has moved out of its coverage, the network device will notify the relay station to directly allocate resources to the mobile terminal by using the radio resources it dictates.
  • the mobile terminal can directly realize the transmission of the data information between the resources allocated by the relay station and the relay station, and no longer use the resources allocated by the network device to implement the transmission of the data information between the relay stations, thereby realizing flexible scheduling of resources.
  • the present invention has an advantage over the prior art in that: when a load imbalance occurs between a relay station and a network device, for example, a base station or a relay station of the relay station, the present invention can implement flexible resource scheduling. For example, if the relay station originally allocates resources for the mobile terminal under its jurisdiction, but the resource of the relay station is scarce, the network device can directly allocate resources for the mobile terminal, thereby balancing resource utilization between the relay station and the network device. Improve resource usage and enhance the performance of multi-hop relay networks. At the same time, since the transmission of data information between the network device and the mobile terminal is still relayed via the relay station, the present invention does not affect the transmission rate of the data information.
  • FIG. 1 shows a typical application scenario of an opaque relay according to the prior art
  • FIG. 2 is a flow chart showing a system for flexibly allocating radio resources to mobile terminals under the jurisdiction of a relay station in a wireless multi-hop relay network according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram showing a network topology structure for flexibly allocating radio resources to mobile terminals under the jurisdiction of a relay station in a wireless multi-hop relay network according to an embodiment of the present invention
  • 4 is a schematic diagram showing the frame structure of the wireless multi-hop relay network shown in FIG. 3.
  • FIG. 5 is a diagram showing the relay mapping in the previous frame of the relay station through the base station in the wireless multi-hop relay network shown in FIG. Obtaining a schematic diagram of resource related information of the mobile terminal;
  • FIG. 6 is a schematic diagram showing a network topology structure for flexibly allocating radio resources to mobile terminals under the jurisdiction of a relay station in a wireless multi-hop relay network according to still another embodiment of the present invention
  • FIG. 7 is a schematic diagram of a frame structure of the wireless multi-hop relay network shown in FIG. 6.
  • FIG. 8 is a schematic diagram of another frame structure of the wireless multi-hop relay network shown in FIG. 6.
  • FIG. 10 is a block diagram showing the structure of each device in a wireless multi-hop relay system for flexibly allocating radio resources to a mobile terminal under the jurisdiction of a relay station according to an embodiment of the present invention.
  • the technical solution of the present invention can be applied to multiple types of wireless multi-hop relay networks, such as WiMAX, 3G, LTE, LTE-Advanced, and the like.
  • WiMAX WiMAX-based wireless multi-hop relay network
  • Those skilled in the art can apply the technical solution of the present invention to other types of wireless multi-hop relays without creatively according to the following detailed description of the case where the present invention is applied to a WiMAX-based wireless multi-hop relay network.
  • the internet The internet.
  • FIG. 2 is a flow chart showing a system for flexibly allocating radio resources to mobile terminals under the jurisdiction of a relay station in a wireless multi-hop relay network according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram showing a network topology structure for flexibly allocating radio resources to mobile terminals under the jurisdiction of a relay station in a wireless multi-hop relay network according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram showing the frame structure of the wireless multi-hop relay network shown in FIG. 3 shows a base station 30, a relay station 20, a mobile terminal 10, a mobile terminal 11, and a mobile terminal 12.
  • the mobile terminal 12 and the relay station 20 are under the jurisdiction of the base station 30, and the mobile terminal 10 and the mobile terminal 11 are under the jurisdiction of the relay station 20.
  • the mobile terminal 10 is again within the coverage of the base station 30.
  • the relay station 20 allocates radio resources to the mobile terminal 10 from the relay resources it administers as an initial state, and then, the base station 30 according to the coverage of the mobile terminal 10
  • the range, the load status of the base station 30, and the load status of the relay station 20 determine which network device, for example, the relay station 20 or the base station 30, allocates resources to the mobile terminal 10 using the radio resources it occupies as an example.
  • step S1 the mobile terminal 10 detects the signal quality of the downlink signal from the base station 30.
  • the detection of the downlink signal from the base station 30 by the mobile terminal 10 may be periodic or non-periodic.
  • step S2 if the signal quality of the downlink signal from the base station 30 detected by the mobile terminal 10 satisfies a predetermined condition, for example, the signal to noise ratio of the detected downlink signal is greater than a predetermined signal to noise ratio threshold, or detection If the signal to interference and noise ratio of the downlink signal is greater than a predetermined signal to interference and noise ratio threshold, or the signal strength of the detected downlink signal is greater than a predetermined signal strength threshold, the mobile terminal 10 will send a first notification message to the base station 30.
  • a predetermined condition for example, the signal to noise ratio of the detected downlink signal is greater than a predetermined signal to noise ratio threshold, or detection If the signal to interference and noise ratio of the downlink signal is greater than a predetermined signal to interference and noise ratio threshold, or the signal strength of the detected downlink signal is greater than a predetermined signal strength threshold, the mobile terminal 10 will send a first notification message to the base station 30.
  • the first notification message is used to indicate that the base station 30 the mobile terminal 10 is already within the coverage of the base station 30, and the base station 30 can allocate radio resources to the mobile terminal 10 from the base station resources it controls.
  • step S3 the base station 30 receives the first notification message from the mobile terminal 10.
  • the base station 30 learns that the mobile terminal 10 has moved into its coverage, and the base station 30 can allocate radio resources to the mobile terminal 10 from among the base station resources it occupies.
  • the base station 30 processes the mobile terminal based on the total amount of idle base station resources and the idle total amount of the relay resources that the relay station 20 occupies.
  • the base station 30 may decide not to allocate the base station resources to which the mobile terminal 10 is allocated.
  • the relay station 20 is still assigned the relay resources it dictates to the mobile terminal 10.
  • the base station 30 may determine that the mobile station 10 is the mobile terminal 10 from its own base station resources. The resources are allocated while notifying the relay station 20 that it is no longer necessary to allocate resources to the mobile terminal 10.
  • the base station 30 is controlled by the base station 30.
  • the mobile terminal 10 is allocated resources in the base station resources.
  • the first predetermined threshold and the second predetermined threshold may be preset, or may be adaptively adjusted by the base station during operation.
  • the base station 30 when the total idle amount of the base station resources that the base station 30 is responsible for is greater than the first predetermined threshold, and the idle total of the relay resources that the relay station 20 occupies is less than the second predetermined threshold, the base station 30 first sends the first control message and the first A synchronization mode message is sent to the mobile terminal 10, and a second control message is sent to the relay station 20.
  • the base station 30 determines the radio resource allocated for the mobile terminal 10, and transmits the first synchronization message and the first resource related message to the mobile terminal 10.
  • the first control message is used to instruct the mobile terminal 10 to use the base station resources borne by the base station 30 and the relay station 20 to transmit data information and control information other than the first synchronization message and the first resource related message.
  • the second control message is used to instruct the relay station 20 to use the base station resources borne by the base station 30 to transmit data information and control information other than the first synchronization message and the first resource related message to the mobile terminal 10.
  • the first synchronization mode message is used to indicate the manner of synchronization between the mobile terminal 10 and the base station 30.
  • the first synchronization mode message includes a synchronization sequence code and a subcarrier occupied by the first synchronization information that is subsequently transmitted.
  • the base station 30 decides to allocate resources to the mobile terminal 10 from the base station resources it is responsible for. After the source, the base station 30 directly transmits the first synchronization message and the first resource related message to the mobile terminal 10 through the downlink channel between the base station 30 and the mobile terminal 10, and no longer forwards to the mobile station via the relay station. Terminal 10.
  • the first synchronization message is used by the mobile terminal 10 to synchronize with the base station 30, and the first resource related message is used to indicate the resources directly allocated by the base station 30 for the mobile terminal 10 to communicate with the relay station 20.
  • the first resource related information is downlink mapping information of the relay station 20 to the mobile terminal 10, and uplink mapping information of the mobile terminal 10 to the relay station 20.
  • the base station 30 may first transmit the first control message and the first synchronization mode message to the mobile terminal 10, and then transmit the second control message to the relay station 20.
  • the base station 30 may first send the second control message to the relay station 20, and then send the first control message and the first synchronization mode message to the mobile terminal 10.
  • the relay station 20 After the base station 30 transmits the second control message to the relay station 20, the relay station 20 receives the second control message from the base station 30. According to the second control message, the relay station 20 knows that the base station 30 will allocate the mobile terminal 10 from the base station resources it is responsible for. Resources, without the need for the relay station 20 to allocate resources to the mobile terminal 10, in the subsequent communication process, the relay station 20 will use the base station resources borne by the base station 30 to transmit data information and the first synchronization message and the first resource related message with the mobile terminal 10. Control information other than that.
  • the mobile terminal 10 receives the first control message from the base station 30 and the first synchronization mode message.
  • the mobile terminal 10 learns that the base station 30 will allocate resources from the mobile terminal 10 in the base station resources it is responsible for, and does not need the relay station 20 to allocate resources to the mobile terminal 10, in the subsequent communication process,
  • the mobile terminal 10 transmits the data information and the control information other than the first synchronization message and the first resource related message by using the base station resource and the relay station 20 governed by the base station 30.
  • the mobile terminal 10 learns between it and the base station 30. Synchronously.
  • the mobile terminal 10 receives the first synchronization message from the base station 30. After receiving the synchronization message from the base station 30, the mobile terminal 10 synchronizes with the base station 30 based on the synchronization sequence code according to the first synchronization message and according to the synchronization sequence code included in the first synchronization mode message.
  • the mobile terminal 10 When the mobile terminal 10 synchronizes with the base station 30, the mobile terminal 10 receives the first resource related message from the base station 30.
  • the first resource related information is downlink mapping information of the relay station 20 to the mobile terminal 10, and uplink mapping information of the mobile terminal 10 to the relay station 20.
  • the mobile terminal 10 can learn the radio resource allocated by the base station 30 to the mobile station 10 from the base station resources it is responsible for, and includes the downlink of the relay station 20 to the mobile terminal 10. Link resources and uplink resources of the mobile terminal 10 to the relay station 20.
  • the downlink resources of the relay station 20 to the mobile terminal 10 are represented by "relay station 20 ⁇ mobile terminal 10", and the uplink resources of the mobile terminal 10 to the relay station 20 are ""
  • the mobile terminal 10 ⁇ relay station 20 "represents.
  • the header portion of the "base station 30 frame” includes a preamble, a frame control header, a downlink map, and an uplink map.
  • the "downlink burst” indicates a radio resource for transmitting downlink burst data
  • “base station 30 ⁇ mobile terminal 12” indicates a radio resource for transmitting information of the base station 30 to the mobile terminal 12
  • “relay-downlink burst” indication a radio resource for transmitting downlink burst data of the base station 30 to the relay station 20
  • uplink burst indicates a radio resource for transmitting uplink burst data
  • “mobile terminal 12 ⁇ base station 30” indicates for transmitting the mobile terminal 12 to
  • the radio resource of the information of the base station 30, "relay-uplink burst” indicates the radio resource for transmitting the uplink burst data of the relay station 20 to the base station 30, and the "ranging channel” indicates the radio resource for ranging.
  • the header portion of the "relay station 20 frame” includes a preamble, a frame control header, a downlink map, and an uplink map.
  • the "downlink burst” indicates a radio resource for transmitting downlink burst data
  • "relay station 20 ⁇ mobile terminal 10” indicates a radio resource for transmitting information of the relay station 20 to the mobile terminal 10
  • "relay station 20 ⁇ mobile terminal 11” indicates For transmission relay
  • the radio resource of the information of the station 20 to the mobile terminal 11 indicates a radio resource for the relay station 20 to receive information from the base station 30, and "uplink burst" indicates for transmitting an uplink burst.
  • the radio resource of the data represents a radio resource for transmitting information of the mobile terminal 10 to the relay station 20, and “mobile terminal 11 ⁇ relay station 20” indicates information for transmitting the information of the mobile terminal 11 to the relay station 20.
  • the radio resource “Ranging Channel” indicates a radio resource for ranging, "Transmission mode for communicating with the base station 30" indicates a radio resource for the relay station 20 to transmit information to the base station 30.
  • the base station 30 directly transmits the first resource related information to the mobile terminal 10. Since the base station 30 transmits the first resource related information to the mobile terminal 10, the relay station 20 also allocates the mobile terminal 11 to the mobile terminal 11. The resource-related information for the transmission resources of the present relay station 20 and the mobile terminal 11 is transmitted to the mobile terminal 11, and therefore, the relay station 20 cannot receive the first resource-related information transmitted by the base station 30. Since the relay station 20 needs to communicate with the mobile terminal 10, the relay station 20 must also know the resource conditions allocated by the base station 30 for the mobile terminal 10.
  • the previous frame and the current frame of the base station 30 shown in FIG. 5 include “mapping”, “relay mapping”, “downlink access area”, and “downlink relay area”, “Uplink Access Area”, “Uplink Access Area”.
  • the base station 30 transmits the first resource related information that is transmitted to the mobile terminal 10 in the current frame, that is, the resource information allocated by the base station 30 to the mobile terminal 10, and then copies it into the "relay mapping" of the previous frame of the base station 30.
  • the relay station 20 can acquire the resource information allocated by the base station 30 for the mobile terminal in the current frame from the "relay mapping" information of the previous frame of the base station 30.
  • a special message is sent in the "downlink relay area" of the previous frame of the base station 30, the message containing the resource information allocated by the base station 30 for the mobile terminal 10 in the current frame.
  • the mobile terminal 10 communicates with the relay station 20 using the radio resources directly allocated by the base station 30 indicated by the first resource related message.
  • the coverage of the relay station 20 is entirely within the coverage of the base station 30.
  • the mobile terminal 12 is directly under the jurisdiction of the base station 30, and the mobile terminal 10 is under the jurisdiction of the relay station 20.
  • the base station 30 decides to allocate resources for the mobile terminal 10 from its own base station resources, all mobile terminals in the wireless multi-hop relay network shown in FIG. 6 are directly from the base station 30 to which the base station 30 is located. Resources are allocated to them, and the relay station 20 is no longer involved in the allocation of resources. Thereby, the relay station 20 does not need to transmit a preamble, a frame control header, resource related information, for example, an uplink map and a downlink map, to the mobile terminal 10, and therefore, the frame structure as shown in FIG. 7, "relay station 20 frames" The header portion of the frame is "idle". The contents of the various parts of the frame structure in Fig. 7 can be seen in the description in Fig. 4.
  • the relay station 20 since the relay station 20 needs to communicate with the mobile terminal 10, the relay station 20 must know the resource situation allocated by the base station 30 for the mobile terminal 10. Although, in the frame structure shown in FIG. 7, the header portion in the "relay station 20 frame" is "idle”, if the relay station 20 uses the idle resource to receive the resource-related information allocated by the base station 30 for the mobile terminal 10, Thereafter, the relay station 20 must immediately switch from the reception mode to the transmission mode, and switching between modes will bring a large delay.
  • the relay station 20 needs to acquire the resources allocated by the base station 30 for the mobile terminal 10 And the two ways, for the sake of brevity, will not be repeated here.
  • the location and size of the relay area can vary. Therefore, as shown in FIG. 8, the order of the relay area and the access area can be adjusted, so that the relay station 20 and the mobile terminal 10 can simultaneously receive the resource-related information allocated by the base station 30 from the base station 30 for the mobile terminal 10.
  • the contents of the frame structure in Fig. 8 can be seen in the description in Fig. 4.
  • the header portion in the "relay station 20 frame" may be in the receiving mode, and the case where the base station 30 transmits the resource allocated by the base station 30 to the mobile terminal 10 is received. Since the relay area and the access area have been reversed, when the relay station 20 receives the resource-related information from the base station 30 for the mobile terminal 10, it is still in the receiving mode, and can continue to receive the data information from the base station 30. There is no need to convert modes.
  • the header portion in the "relay station 20 frame" may be in the receiving mode, and the case where the base station 30 transmits the resource allocated by the base station 30 to the mobile terminal 10 is received. Since the relay area and the access area have been reversed, when the relay station 20 receives the resource-related information from the base station 30 for the mobile terminal 10, it is still in the receiving mode, and can continue to receive the data information from the base station 30. There is no need to convert modes. In FIG.
  • the first resource related information that is, the resource information allocated by the base station 30 to the mobile terminal 10
  • the relay station 20 can acquire the first resource related information, that is, the resource information allocated by the base station 30 for the mobile terminal 10, like the mobile terminal 10, at this time, the first resource related information does not have to be Put it in the "relay map".
  • the mobile terminal 10 After the mobile terminal 10 enters the coverage area of the base station 30, and the base station 30 allocates resources for the mobile terminal 10 from the base station resources it is responsible for, the mobile terminal 10 continues to perform downlink signals from the base station 30 in step S5. Detection.
  • the mobile terminal 10 When the signal quality of the detected downlink signal still satisfies the above predetermined condition, i.e., the mobile terminal 10 is still within the coverage area of the base station 30, the mobile terminal 10 does not send any notification message to the base station 30.
  • the base station 30 can Notifying the relay station 20 to allocate resources to the mobile terminal 10 using the relay resources it dictates, and the base station 30 is no longer a mobile terminal itself. 10 allocate resources.
  • the mobile terminal 10 is still in the coverage area of the base station 30, when the total amount of idle base station resources is less than the third predetermined threshold, and the idle total of the relay resources dictated by the relay station 20 is greater than the fourth predetermined Threshold, then, base station 30 notifies relay station 20 to allocate resources to mobile terminal 10 using its assigned relay resources.
  • the third predetermined threshold and the fourth predetermined threshold may be preset, or may be adaptively adjusted by the base station during operation.
  • step S6 the mobile terminal 10 transmits a second notification message to the base station 30 via the relay station 20.
  • step S7 the base station 30 receives the second notification message from the mobile terminal 10.
  • the base station 30 learns that the mobile terminal 10 has moved outside of its coverage, and the base station 30 can notify the relay station 20 to allocate radio resources to the mobile terminal 10 from among the relay resources it occupies.
  • the base station 30 notifies the relay station 20 to allocate resources to the mobile terminal 10 using the radio resources it dictates based on the radio resources governed by the relay station 20.
  • the base station 30 sends a third control message and a second synchronization mode message to the mobile terminal 10, and sends a fourth control message to the relay station 20.
  • the third control message instructs the mobile terminal 10 using the relay station 20 relay resource dominated all data and control information transmitted with the relay station 20, the second embodiment the synchronization message for a mobile terminal 10 and the relay station 20 The way to synchronize.
  • the second synchronization mode message includes a synchronization sequence code and a subcarrier occupied by the second synchronization information subsequently transmitted by the relay station 20.
  • the fourth control message is used to instruct the relay station 20 to transmit all data information and control information with the mobile terminal 10 using its relay resources.
  • the base station 30 may first send the third control message and the second synchronization mode message to the mobile terminal 10, and then send the fourth control message to Relay station 2 0.
  • the base station 30 may first send the fourth control message to the relay station 20, and then send the third control message and the second synchronization mode message to the mobile terminal io.
  • the mobile terminal 10 After the base station 30 transmits the third control message and the second synchronization mode message to the mobile terminal 10, the mobile terminal 10 receives the third control message from the base station 30 and the second synchronization mode message.
  • the mobile terminal 10 learns that the relay station 20 will allocate resources to the mobile terminal 10 by using the relay resources it occupies, and the base station 30 no longer allocates resources for it. In the subsequent communication process, the mobile terminal 10 will use the relay resources dictated by the relay station 20 to transmit all data information and control information to the relay station 20.
  • the mobile terminal 10 Based on the second synchronization mode message, the mobile terminal 10 knows the synchronization mode with the relay station 20.
  • the relay station 20 receives the fourth control message from the base station 30. Based on the fourth control message, the relay station 20 learns that the base station 30 no longer allocates resources for the mobile terminal 10 from its assigned base station resources, and the relay station 20 allocates resources to the mobile terminal 10 using its assigned relay resources. In the subsequent communication process, the relay station 20 will transmit all data information and control information with the mobile terminal 10 using its assigned relay resources.
  • the relay station 20 determines the radio resource allocated for the mobile terminal 10, and transmits the second synchronization message and the second resource related message to the mobile terminal 10.
  • the second synchronization message is used by the mobile terminal 10 to synchronize with the relay station 20, and the second resource related message is used to instruct the mobile terminal 10 to communicate with the relay station 20 to directly allocate radio resources by the relay station 20.
  • the second resource related information is downlink mapping information of the relay station 20 to the mobile terminal 10, and uplink mapping information of the mobile terminal 10 to the relay station 20.
  • the mobile terminal 10 When the relay station 20 transmits the second synchronization message and the second resource related message to the mobile terminal 10, the mobile terminal 10 first receives the second synchronization message from the relay station 20.
  • the mobile terminal 10 After receiving the second synchronization message from the relay station 20, the mobile terminal 10 synchronizes with the relay station 20 based on the synchronization sequence code included in the second synchronization mode message based on the second synchronization message. After the mobile terminal 10 synchronizes with the relay station 20, the mobile terminal 10 receives the second resource related message from the relay station 20.
  • the mobile terminal 10 can learn the radio resource allocated by the relay station 20 from the relay resource that it is responsible for communicating with the relay station 20, including the relay station 20 to the mobile terminal 10. Downlink resources and uplink resources of the mobile terminal 10 to the relay station 20.
  • the mobile terminal 10 performs transmission of all data information and control information with the relay station 20 using the radio resources directly allocated by the relay station 20 indicated by the second resource related message.
  • the three-hop wireless relay network shown in Fig. 9 includes a base station 30", a relay station 20", a relay station 21", a mobile terminal 10", a mobile terminal 11" and a mobile terminal 12".
  • the mobile terminal 12" is directly under the jurisdiction of the base station 30", the relay station 21, is the relay station 20', and the mobile terminal 10" and the mobile terminal 11" are under the jurisdiction of the relay station 20".
  • the relay station 20 allocates resources to the mobile terminal 10 by using the relay resources it dictates. After the mobile terminal 10 "moves into the coverage of the relay station 21", if the total amount of radio resources of the relay station 21" is rich, On the other hand, the total amount of radio resources of the relay station 20" is insufficient, and the relay station 21" can directly allocate resources to the mobile terminal 10 by using the relay resources it dictates.
  • the relay station 20 can re-allocate resources for the mobile terminal 10 by using the relay resources it dictates.
  • the resource allocation manner refer to the foregoing detailed description of the two-hop relay network.
  • no further details are provided herein.
  • the above is a detailed description of the technical solution of the present invention from the viewpoint of the method, and the present invention will be further described from the perspective of the device module.
  • the technical solution of the present invention will be described below with reference to FIG. 10 in conjunction with FIGS. 3 and 4, and the description of FIGS. 3 and 4 in the above method section is incorporated herein by reference.
  • Figure 10 is a block diagram showing the structure of each device in a wireless multi-hop relay system for flexibly allocating radio resources to a mobile terminal under the jurisdiction of a relay station in accordance with an embodiment of the present invention.
  • the relay station 20 allocates radio resources to the mobile terminal 10 from the relay resources it administers as an initial state, and then, the base station 30 according to the coverage of the mobile terminal 10
  • the range, the load status of the base station 30, and the load status of the relay station 20 determine which network device, for example, the relay station 20 or the base station 30, allocates resources to the mobile terminal 10 using the radio resources it occupies as an example.
  • the first detecting device 1000 of the auxiliary scheduling device 100 included in the mobile terminal 10 detects the signal quality of the downlink signal from the base station 30.
  • the detection of the downlink signal from the base station 30 by the first detecting device 1000 may be periodic or non-periodic.
  • the signal quality of the downlink signal from the base station 30 detected by the mobile terminal 10 satisfies a predetermined condition, for example, the signal to noise ratio of the detected downlink signal is greater than a predetermined signal to noise ratio threshold, or the detected downlink signal If the signal to interference and noise ratio is greater than a predetermined signal to interference and noise ratio threshold, or the detected signal strength of the downlink signal is greater than a predetermined signal strength threshold, the fifth transmitting device 1001 in the auxiliary scheduling device 100 included in the mobile terminal 10 will transmit The first notification message is sent to the base station 30.
  • the first notification message is used to indicate that the base station 30 is already in the coverage of the base station 30, and the base station 30 can allocate radio resources to the mobile terminal 10 from the base station resources it is responsible for. Then, the first base station 300 scheduling means receiving apparatus 30 included in the first notification message is received from the mobile terminal 10 3000.
  • the base station 30 learns that the mobile terminal 10 has moved into its coverage, and the distribution device 3001 in the scheduling device 300 included in the base station 30 can be the mobile terminal 10 from the base station resources it is responsible for. Allocated wireless resources.
  • the allocating means 3001 processes the resource allocation of the mobile terminal 10 based on the total amount of idle base station resources and the idle total amount of the relay resources dictated by the relay station 20.
  • the base station 30 may decide not to allocate the base station resources to which the mobile terminal 10 is allocated.
  • the relay station 20 is still assigned the relay resources it dictates to the mobile terminal 10.
  • the base station 30 may determine that the mobile station 10 is the mobile terminal 10 from its own base station resources. The resources are allocated while notifying the relay station 20 that it is no longer necessary to allocate resources to the mobile terminal 10.
  • the allocation device 3001 is from its control.
  • the mobile terminal 10 is allocated resources in the base station resources.
  • the first predetermined threshold and the second predetermined threshold may be preset, or may be adaptively adjusted by the base station during the working process.
  • the first transmitting device in the allocating device 3001 when the total idle amount of the base station resources that the base station 30 occupies is greater than the first predetermined threshold, and the idle total amount of the relay resources that the relay station 20 occupies is less than the second predetermined threshold, the first transmitting device in the allocating device 3001 The first control message and the first synchronization mode message are first transmitted to the mobile terminal 10, and the second control message is transmitted to the relay station 20.
  • the first transmitting device in the allocating device 3001 determines the radio resource allocated by the mobile terminal 10, and transmits the first synchronization message and the first resource related message to the mobile terminal 10.
  • the first control message is used to instruct the mobile terminal 10 to use the base station resources borne by the base station 30 and the relay station 20 to transmit data information and control information other than the first synchronization message and the first resource related message.
  • the second control message is used to instruct the relay station 20 to use the base station resources borne by the base station 30 to transmit data information and control information other than the first synchronization message and the first resource related message to the mobile terminal 10.
  • the first synchronization mode message is used to indicate the synchronization mode between the mobile terminal 10 and the base station 30.
  • the first synchronization mode message includes a synchronization sequence code and a subcarrier occupied by the first synchronization information that is subsequently transmitted.
  • the base station 30 when the mobile terminal 10 moves into the coverage of the base station 30, and the base station 30 decides to allocate resources to the mobile terminal 10 from the base station resources it is responsible for, the base station 30 directly utilizes the base station resources it occupies.
  • the first synchronization message and the first resource related message are transmitted to the mobile terminal 10 through the downlink channel between the base station 30 and the mobile terminal 10, and are no longer forwarded to the mobile terminal 10 via the relay station.
  • the base station 10 with a first synchronization message for synchronizing the mobile terminal 30, a first resource for the associated message indicating that the mobile terminal 10 by the base station 30 performs resource allocation in direct communication with the relay station 20.
  • the first resource related information is downlink mapping information of the relay station 20 to the mobile terminal 10, and uplink mapping information of the mobile terminal 10 to the relay station 20.
  • the first transmitting device in the distributing device 3001 sends the first control message and the first synchronization mode message to the mobile terminal 10, and the first transmitting device in the distributing device 3 001 sends the second control message to the relay station 20. There is no inevitable sequence between them.
  • the first transmitting device may first send the first control message and the first synchronization mode message to the mobile terminal 10, and then send the second control message to the relay station 20.
  • the first transmitting device may first send the second control message to the relay station 20, and then send the first control message and the first synchronization mode message to the mobile terminal 10.
  • third receiving means scheduling means cooperative relay station 20 included in the relay station receives a control message from the second base station 30, according to the second control message, the base station relay station 20 is known 30 will allocate resources to the mobile terminal 10 from the base station resources it is responsible for, without the need for the relay station 20 to allocate resources for the mobile terminal 10, and in the subsequent communication process, the relay station 20 will utilize the base station 30 .
  • the base station resource and the mobile terminal 10 transmit data information and control information other than the first synchronization message and the first resource related message.
  • the fifth receiving device in the auxiliary scheduling device 100 included in the mobile terminal 10 receives the first control message from the base station 30 and The first synchronization mode message.
  • the mobile terminal 10 learns that the base station 30 will allocate resources from the mobile terminal 10 in the base station resources it is responsible for, and does not need the relay station 20 to allocate resources to the mobile terminal 10, in the subsequent communication process,
  • the mobile terminal 10 transmits the data information and the control information other than the first synchronization message and the first resource related message by using the base station resource and the relay station 20 governed by the base station 30.
  • the mobile terminal 10 Based on the first synchronization mode message, the mobile terminal 10 knows the synchronization mode with the base station 30.
  • the sixth receiving device in the secondary scheduling device 100 receives the first synchronization message from the base station 30.
  • the sixth synchronization device in the secondary scheduling device 100 is based on the first synchronization message, and according to the synchronization sequence code included in the first synchronization mode message.
  • the base station 30 performs synchronization.
  • the seventh receiving device in the secondary scheduling device 100 receives the first resource related message from the base station 30.
  • the first resource related information is downlink mapping information of the relay station 20 to the mobile terminal 10, and uplink mapping information of the mobile terminal 10 to the relay station 20.
  • the mobile terminal 10 can learn the radio resource allocated by the base station 30 to the mobile terminal 10 from the base station resources it is responsible for, and includes the downlink of the relay station 20 to the mobile terminal 10. Link resources and uplink resources of the mobile terminal 10 to the relay station 20.
  • FIG. 4 A schematic view of the frame structure 4 shown with reference to FIG. 4, a downlink resources to the relay station 20 to the mobile terminal 10 to "20 mobile relay terminal 10", the uplink resources of the mobile terminal 10 to the relay station 20 to " The mobile terminal 10 ⁇ relay station 20 "represents.
  • the "relay station 20 mobile terminal 10" occupies the base station resource allocated by the base station 30, the "base station 30 frame” corresponds to the "relay station 20 frame, the "relay station 20 ⁇ the mobile terminal 10" That part of the space should be idle to avoid interference.
  • the portion of the "base station 30 frames” corresponding to “relay station 20 frames, "mobile terminal 10 ⁇ relay station 20" should also be in an idle state.
  • the base station 30 directly transmits the first resource related information to the mobile terminal 10. Since the base station 30 transmits the first resource related information to the mobile terminal 10, the relay station 20 also allocates the mobile terminal 11 to the mobile terminal 11. The resource-related information for the transmission resources of the present relay station 20 and the mobile terminal 11 is transmitted to the mobile terminal 11, and therefore, the relay station 20 cannot receive the first resource-related information transmitted by the base station 30. Since the relay station 20 needs to communicate with the mobile terminal 10, the relay station 20 must also know the resource conditions allocated by the base station 30 for the mobile terminal 10.
  • the base station 30 copies the first resource related information that is transmitted to the mobile terminal 10 in the current frame, that is, the resource information allocated by the base station 30 to the mobile terminal 10, and copies it into the "relay mapping" of the previous frame of the base station 30.
  • the relay station 20 can acquire the resource information allocated by the base station 30 for the mobile terminal in the current frame from the "relay mapping" information of the previous frame of the base station 30.
  • a special message is sent in the "downlink relay area" of the previous frame of the base station 30, the message containing the resource information allocated by the base station 30 for the mobile terminal 10 in the current frame.
  • the third transmission device in the secondary scheduling device 100 communicates with the relay station 20 using the wireless resources directly allocated by the base station 30 indicated by the first resource related message.
  • the coverage of the relay station 20 is entirely within the coverage of the base station 30.
  • the mobile terminal 12 is directly under the jurisdiction of the base station 30, and the mobile terminal 10 is under the jurisdiction of the relay station 20.
  • the base station 30 decides to allocate resources for the mobile terminal 10 from its own base station resources, all mobile terminals in the wireless multi-hop relay network shown in FIG. 6 are directly from the base station 30 to which the base station 30 is located. Resources are allocated to them, and the relay station 20 is no longer involved in the allocation of resources. Thereby, the relay station 20 does not need to transmit a preamble, a frame control header, resource related information, for example, an uplink map and a downlink map, to the mobile terminal 10, and therefore, the frame structure as shown in FIG. 7, "relay station 20 frames" The header portion of the frame is "idle". The contents of the various parts of the frame structure in Fig. 7 can be seen in the description in Fig. 4.
  • the relay station 20 since the relay station 20 needs to communicate with the mobile terminal 10, the relay station 20 must know the resource situation allocated by the base station 30 for the mobile terminal 10. Although, in the frame structure shown in FIG. 7, the header portion in the "relay station 20 frame" is "idle”, if the relay station 20 uses the idle resource to receive the resource-related information allocated by the base station 30 for the mobile terminal 10, Thereafter, the relay station 20 must immediately switch from the reception mode to the transmission mode, and switching between modes will bring a large delay.
  • the relay station 20 needs to adopt the two methods mentioned above for the resource allocated by the base station 30 for the mobile terminal 10. For the sake of clarity, it will not be described here. .
  • the location and size of the relay area can vary. Therefore, as shown in FIG. 8, the order of the relay area and the access area can be adjusted, so that the relay station 20 and the mobile terminal 10 can simultaneously receive the resource-related information allocated by the base station 30 from the base station 30 for the mobile terminal 10.
  • the contents of the frame structure in Fig. 8 can be seen in the description in Fig. 4.
  • the header portion of the "relay station 20 frames,” may be in the receiving mode, and receive the case where the base station 30 transmits the resources allocated by the base station 30 to the mobile terminal 10. Due to the relay area and access The area has been swapped, so that when the relay station 20 receives the resource related information from the base station 30 for the mobile terminal 10, it is still in In the receive mode, data information from the base station 30 can continue to be received without the need for a conversion mode.
  • the header portion of the "relay station 20 frames” may be in the receiving mode, and receive the case where the base station 30 transmits the resources allocated by the base station 30 to the mobile terminal 10. Due to the relay area and access The area has been swapped, so that when the relay station 20 receives the resource related information from the base station 30 for the mobile terminal 10, it is still in In the receive mode, data information from the base station 30 can continue to be received without the need for a conversion mode.
  • the first resource related information that is, the resource information allocated by the base station 30 to the mobile terminal 10
  • the relay station 20 can acquire the first resource related information, that is, the resource information allocated by the base station 30 for the mobile terminal 10, as in the mobile terminal 10, at this time, the first resource related information. It does not have to be placed in the "relay map". The invention will still be described below with reference to Figs. 10 and 3.
  • the distribution apparatus 3001 in the scheduling apparatus 300 included in the base station 30 allocates resources to the mobile terminal 10 from the base station resources it is responsible for, the assistance included in the mobile terminal 10
  • the second detection device 1002 in the scheduling device 100 continues to detect the downlink signal from the base station 30.
  • the mobile terminal 10 When the signal quality of the downlink signal detected by the second detecting means 1002 still satisfies the above predetermined condition, i.e., the mobile terminal 10 is still within the coverage area of the base station 30, the mobile terminal 10 does not transmit any notification message to the base station 30.
  • the scheduling apparatus 300 can notify the relay station 20 to allocate resources to the mobile terminal 10 using its assigned relay resources, while the base station 30 itself no longer allocates resources for the mobile terminal 10.
  • the mobile terminal 10 is still in the coverage area of the base station 30, when the total amount of idle base station resources is less than the third predetermined threshold, and the total idle amount of the relay resources dictated by the relay station 20 is greater than the fourth predetermined schedule. Threshold, then the notification device in the scheduling device 300 notifies the relay station 20 to allocate resources to the mobile terminal 10 using its assigned relay resources.
  • the third predetermined threshold and the fourth predetermined threshold may be preset, or may be adaptively adjusted by the base station during operation.
  • the sixth transmitting device 1003 in the auxiliary scheduling device 100 included in the mobile terminal 10 transmits the second notification message to the base station 30 via the relay station 20.
  • the second receiving device 3002 in the scheduling device 300 included in the base station 30 receives the second notification message from the mobile terminal 10.
  • the base station 30 learns that the mobile terminal 10 has moved outside of its coverage, and the base station 30 can notify the relay station 20 to allocate radio resources to the mobile terminal 10 from among the relay resources it occupies.
  • the notification device 3003 in the scheduling device 300 then instructs the relay station 20 to allocate resources to the mobile terminal 10 using the radio resources it dictates based on the radio resources governed by the relay station 20.
  • the third transmitting device in the notification device 3003 transmits the third control message and the second synchronization mode message to the mobile terminal 10, and transmits the fourth control message to the relay station 20.
  • the third control message is used to instruct the mobile terminal 10 to transmit all data information and control information to the relay station 20 by using the relay resource stipulated by the relay station 20, and the second synchronization mode message is used for the mobile terminal 10 to synchronize with the relay station 20.
  • the second synchronization mode message includes a synchronization sequence code and a subcarrier occupied by the second synchronization information subsequently transmitted by the relay station 20.
  • the fourth control message is used to instruct the relay station 20 to transmit all data information and control information with the mobile terminal 10 using its relay resources.
  • the third transmitting device sends the third control message and the second synchronization mode message to the mobile terminal 10, and there is no necessary sequence between the third sending device and the third sending device to send the fourth control message to the relay station 20.
  • the third transmitting device may first transmit the third control message and the second synchronization mode message to the mobile terminal 10, and then transmit the fourth control message to the relay station 20.
  • the third transmitting device may first send the fourth control message to the relay station 20, and then send the third control message and the second synchronization mode message to the mobile terminal 10.
  • the eighth receiving device included in the auxiliary control device 100 included in the mobile terminal 10 receives the third control message from the base station 30 and the second Synchronous mode message.
  • the mobile terminal 10 learns that the relay station 20 will allocate resources to the mobile terminal 10 by using the relay resources it occupies, and the base station 30 no longer allocates resources for it.
  • the mobile terminal 10 will use the relay resources dictated by the relay station 20 to transmit all data information and control information to the relay station 20.
  • the mobile terminal 10 Based on the second synchronization mode message, the mobile terminal 10 knows the synchronization mode with the relay station 20.
  • the fourth receiving device among the cooperative scheduling devices included in the relay station 20 receives the fourth control message from the base station 30. Based on the fourth control message, the relay station 20 knows that the base station 30 is no longer allocating resources for the mobile terminal 10 from its assigned base station resources, and the relay station 20 allocates resources to the mobile terminal 10 using its assigned relay resources. In the subsequent communication process, the relay station 20 will transmit all of the data information and control information with the mobile terminal 10 using its assigned relay resources.
  • the fourth transmitting device in the cooperative scheduling device determines the radio resource allocated to the mobile terminal 10, and transmits the second synchronization message and the second resource related message to the mobile terminal.
  • the second synchronization message is used by the mobile terminal 10 to synchronize with the relay station 20, and the second resource related message is used to instruct the mobile terminal 10 to communicate with the relay station 20 to directly allocate radio resources by the relay station 20.
  • the second resource related information is downlink mapping information of the relay station 20 to the mobile terminal 10, and uplink mapping information of the mobile terminal 10 to the relay station 20.
  • the ninth receiving device in the secondary scheduling device 100 first receives the second synchronization message from the relay station 20.
  • the ninth receiving device receives the second synchronization message from the relay station 20
  • the second synchronization device in the auxiliary scheduling device 100 is based on the second synchronization message, and according to the synchronization sequence code included in the second synchronization mode message.
  • the relay station 20 performs synchronization.
  • the tenth receiving device in the secondary scheduling device 100 receives the second resource related message from the relay station 20. Based on the second resource-related information, the mobile terminal 10 can learn the radio resource allocated by the relay station 20 from the relay resource that it is responsible for communicating with the relay station 20, including the relay station 20 to the mobile terminal 10. Downlink resources and uplink resources of the mobile terminal 10 to the relay station 20.
  • the fourth transmission device in the secondary scheduling device 100 performs transmission of all data information and control information with the relay station 20 using the wireless resource directly allocated by the relay station 20 indicated by the second resource-related message.
  • the three-hop wireless relay network shown in FIG. 9 includes a base station 30", a relay station 20", a relay station 21", a mobile terminal 10", a mobile terminal 11, and a mobile terminal 12". wherein the mobile terminal 12" is directly The base station 30", the relay station 21, is the upper relay station of the relay station 20", and the mobile terminal 10" and the mobile terminal 11" are under the jurisdiction of the relay station 20.
  • the relay station 20 allocates resources to the mobile terminal 10 by using the relay resources it dictates. After the mobile terminal 10 "moves into the coverage of the relay station 21", if the total amount of radio resources of the relay station 21" is rich, On the other hand, the total amount of radio resources of the relay station 20" is insufficient, and the relay station 21 can directly allocate resources to the mobile terminal 10 by using the relay resources it dictates.
  • the relay station 20 can re-allocate resources for the mobile terminal 10 by using the relay resources it occupies.

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

Abstract

Procédé et dispositif de régulation des ressources d’un terminal mobile subordonné à une station relais dans un réseau relais à saut multiples sans fil. Un terminal mobile teste la qualité d’un signal descendant en provenance d’un équipement réseau. Si la qualité du signal remplit des conditions prédéfinies, le terminal mobile envoie un premier message de notification à un équipement réseau, lequel alloue des ressources au terminal mobile en fonction de la quantité de ressources sans fil inactives commandées par l’équipement réseau et de la quantité de ressources sans fil inactives commandées par une station relais. Si la qualité du signal ne remplit pas les conditions prédéfinies, le terminal mobile envoie un deuxième message de notification à un équipement réseau, lequel demande à une station relais d’allouer les ressources sans fil qu’elle commande audit terminal mobile en fonction des ressources sans fil qu’elle commande.
PCT/CN2008/001256 2008-07-01 2008-07-01 Procédé et dispositif de régulation des ressources dans un terminal mobile d’un réseau de retransmission sans fil WO2010000094A1 (fr)

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PCT/CN2008/001256 WO2010000094A1 (fr) 2008-07-01 2008-07-01 Procédé et dispositif de régulation des ressources dans un terminal mobile d’un réseau de retransmission sans fil

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