WO2010124500A1 - 一种实现中继节点协作的方法及系统 - Google Patents

一种实现中继节点协作的方法及系统 Download PDF

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Publication number
WO2010124500A1
WO2010124500A1 PCT/CN2009/075800 CN2009075800W WO2010124500A1 WO 2010124500 A1 WO2010124500 A1 WO 2010124500A1 CN 2009075800 W CN2009075800 W CN 2009075800W WO 2010124500 A1 WO2010124500 A1 WO 2010124500A1
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Prior art keywords
relay node
base station
information
control information
cooperation
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PCT/CN2009/075800
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English (en)
French (fr)
Inventor
毕峰
吴栓栓
梁枫
杨瑾
袁明
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中兴通讯股份有限公司
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Publication of WO2010124500A1 publication Critical patent/WO2010124500A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/34Reselection control
    • H04W36/38Reselection control by fixed network equipment
    • H04W36/385Reselection control by fixed network equipment of the core network

Definitions

  • the present invention relates to a collaboration technology, and more particularly to a method and system for implementing relay node cooperation. Background technique
  • B3G/4G The research goal of B3G/4G is to integrate cellular, fixed wireless access, nomadic, wireless regional network and other access systems, combined with all-IP networks to provide users with peak transmission rates of up to 100Mbps and 1Gbps wireless transmission in high-speed and low-speed mobile environments.
  • Capabilities, and the seamless integration of cellular systems, regional wireless networks, broadcast, and television satellite communications, enables humans to "anybody can communicate with anyone else in any way, anytime, anywhere."
  • the relay technology is an effective measure.
  • the relay technology can increase the coverage of the cell and increase the cell capacity.
  • more problems such as resource utilization are caused.
  • Cooperative technology is a macro or distributed MIMO system in a multi-hop system.
  • Cooperative technology can be applied to uplink and downlink access links.
  • the cooperation technique is similar to macro-diversity between adjacent evolved base station eNBs, and is implemented in a cell by cooperative transmission between an eNB and each relay node (RN).
  • Cooperative diversity is achieved by transmitting the associated signals using the transmit antennas of different eNBs and RNs.
  • BER/BLER link error rate/block error rate
  • spatial multiplexing can bring higher spectral efficiency to the system.
  • Resource cooperation within the eNB that introduces the RN node can be seen as multi-point coordination within the eNB.
  • the RN When the eNB and the RN cooperate, the RN must transmit the same pilot as the eNB, and the R8 UEs measure an integrated channel quality, and feed back the measured channel quality to the eNB and the RN for the next service scheduling. If the RN does not transmit the same pilot as the eNB, the correct acquisition of the link quality of the RN to the R8 UEs cannot be guaranteed, thereby improving the link BER/BLER.
  • the RN only transmits the service information of the UEs of its own subordinates, reduces the bandwidth utilization rate of the RN, and increases the overhead of the eNB to the RN link, thereby reducing the throughput of the entire system.
  • the main purpose of the present invention is to provide a method for implementing relay node cooperation, which can ensure the backward compatibility of the user, accurately reduce the link cost of the base station to the relay station, and improve the throughput of the entire system. .
  • Another object of the present invention is to provide a system for implementing relay node cooperation, which can ensure the backward compatibility of users, accurately reduce the link cost of the base station to the relay station, and improve the throughput of the entire system.
  • a method for implementing relay node cooperation comprising:
  • the base station selects a cooperation mode according to a preset cooperation condition.
  • the cooperation condition indicates that the base station and the relay node are point-to-point
  • the base station and the relay node cooperate by using a unique information manner
  • the cooperation condition indicates that the base station and the relay node are between
  • the point-to-multipoint is used, the base station and the relay node cooperate in a common information manner.
  • the cooperation condition is: whether the user terminal can correctly acquire the base station to user link, and the channel quality of the relay node to the user link;
  • the method for selecting a cooperation mode is: if the user terminal can correctly acquire the base station to a user link, and a channel quality of the relay node to the user link, the cooperation condition indicates that the base station and the relay node are point-to-point;
  • the cooperation condition indicates that the base station and the relay node are point-to-multipoint.
  • the cooperation condition is: whether the user terminal is only within the coverage of the base station and a certain relay node; the method for selecting the cooperation mode is: if the user terminal is only within the coverage of the base station and a certain relay node, The cooperation condition indicates that the base station and the relay node are point-to-point;
  • the cooperation condition indicates that the base station and the relay node are point-to-multipoint .
  • the cooperation between the base station and the relay node by using the unique information manner specifically includes: the base station transmitting the service information of each relay node by using independent coding, and the base station identifies each of the relay nodes with the identifier RN-ID. Following the control information of the node and transmitting, each relay node only forwards the data to be coordinated belonging to itself.
  • the independent coding method is: the base station separately performs channel coding, CRC check, constellation modulation, and mapping processing on service information of each relay node;
  • the control information includes: at least: resource allocation information indicating a resource block to which the service information belongs, and a modulation mode;
  • the method for the relay node to forward only the data to be coordinated according to itself includes:
  • the relay node uses the RN-ID to blindly detect the control information that belongs to itself, obtains the service information to be coordinated according to the resource allocation information in the control information, and demodulates the service information according to the modulation mode in the control information;
  • the base station separately encodes and transmits the service information of each relay node, and simultaneously identifies and transmits the control information of each user terminal by using different user terminal IDs, and each relay node performs the same service information as the base station for its own service information. Transmit after encoding;
  • the user terminal blindly detects the control information belonging to itself by using the respective UE-IDs, obtains the service information to be coordinated according to the resource allocation information in the control information, and solves the service information of the user according to the modulation mode in the control information. Tune.
  • the cooperation between the base station and the relay node by using the public information manner specifically includes: the base station uses the joint coding of the service information of each relay node, and the base station identifies the same relay node with the identifier RC-ID. Following the control information of the node and transmitting, each relay node forwards all data to be coordinated.
  • the method for joint coding is: the base station performs channel coding, CRC check, constellation modulation, resource allocation, and mapping processing together with service information of each relay node;
  • the control information includes: at least: resource allocation information indicating a resource block to which the service information belongs, and a modulation mode;
  • the method for the relay node to forward all data to be coordinated includes:
  • the relay node uses the RC-ID to detect the control information, obtains the service information to be coordinated according to the resource allocation information in the control information, and demodulates the service information according to the modulation mode in the control information;
  • the base station separately encodes and transmits the service information of each relay node, and simultaneously identifies and controls the control information of each user terminal by using the IDs of different user terminals, and each relay node separately performs service information of each relay node.
  • the user terminal blindly detects the control information belonging to itself by using the respective UE-IDs, obtains the service information to be coordinated according to the resource allocation information in the control information, and solves the service information of the user according to the modulation mode in the control information. Tune.
  • the relay nodes are two or more. When the user terminal is only within the coverage of multiple relay nodes, the relay nodes cooperate by using a common information manner;
  • the method for the relay node to forward all data to be coordinated includes:
  • the relay node uses the RC-ID to blindly detect the control information, according to the resource points in the control information.
  • the information is obtained by acquiring the service information to be coordinated, and demodulating the service information according to the modulation mode in the control information;
  • Each relay node performs the same coding and transmission on the service information of each relay node, and simultaneously identifies and controls the control information of each user terminal by using different user terminal IDs;
  • the user terminal blindly detects the control information belonging to itself by using the respective UE-IDs, obtains the service information to be coordinated according to the resource allocation information in the control information, and solves the service information of the user according to the modulation mode in the control information. Tune.
  • the blind detection of the control information by the different relay stations does not limit the sequence.
  • a system for implementing relay node cooperation includes a base station, a relay node, where the base station is configured to select a cooperation mode according to a preset cooperation condition, and when the cooperation condition indicates that the base station and the relay node are point-to-point, The relay node sends a unique information mode notification; when the cooperation condition indicates that the base station and the relay node are point-to-multipoint, the public node notification is sent to the relay node;
  • the relay node is configured to cooperate according to the notification from the base station, when receiving the notification of the unique information mode, the base station and the relay node cooperate by using the unique information manner; when receiving the notification of the public information mode, the base station and the relay node Collaborate through public information.
  • each relay node When the relay node is two or more, when the relay node receives the public information mode notification, each relay node cooperates by using a common information method.
  • the base station includes a cooperation condition setting unit, a selection unit, and a sending unit, where the cooperation condition setting unit is configured to set a cooperation condition;
  • a selecting unit configured to select a cooperation mode according to a preset cooperation condition, and when the cooperation condition indicates that the base station and the relay node are point-to-point, send a unique information mode notification to the relay node; when the cooperation condition indicates that the base station and the relay node are When the point is multi-point, the public information mode notification is sent to the relay node;
  • a sending unit configured to send service information to the relay node according to the selection result of the selecting unit, and Control information.
  • cooperation condition set by the cooperation condition setting unit is: whether the user terminal can correctly acquire the base station to user link, and the channel quality of the relay node to the user link;
  • the selecting unit is configured to: if the user terminal can correctly acquire the base station to user link, and the channel quality of the relay node to the user link, the cooperation condition indicates that the base station and the relay node are point-to-point, Following the node sending a unique information notification;
  • the cooperation condition indicates that the base station and the relay node are point-to-multipoint, and send to the relay node. Public information method notification.
  • the cooperation condition set by the cooperation condition setting unit is: whether the user terminal is only within the coverage of the base station and a certain relay node;
  • the selecting unit is configured to: if the user terminal is only in the coverage of the base station and a certain relay node, the cooperation condition indicates that the base station and the relay node are point-to-point, and send a unique information mode notification to the relay node;
  • the cooperation condition indicates that the base station and the relay node are point-to-multipoint , Send a public information mode notification to the relay node.
  • the sending unit is configured to separately transmit the service information of each relay node, and identify the control information of each relay node by using the identifier RN-ID of the different relay node.
  • the sending unit is configured to perform joint coding on the service information of each relay node, and identify and transmit the control information of each relay node by using the identifier RC-ID of the same relay node.
  • the relay node includes a first cooperation processing unit and a second cooperation processing unit;
  • the first a cooperation processing unit, configured to forward only data to be cooperated by itself;
  • the second cooperation processing unit is configured to forward all data to be coordinated.
  • the first cooperation processing unit is configured to: use the RN-ID to blindly detect the control information that belongs to itself, obtain the service information to be coordinated according to the resource allocation information in the control information, and perform the service according to the modulation mode in the control information.
  • Information is demodulated.
  • the second cooperation processing unit is configured to: use the RC-ID to detect the control information, obtain the service information to be coordinated according to the resource allocation information in the control information, and demodulate the service information according to the modulation mode in the control information.
  • the base station selects a cooperation mode according to a preset cooperation condition.
  • the cooperation condition indicates that the base station and the relay node are point-to-point
  • the base station and the relay node use a unique information manner to cooperate.
  • the cooperation condition indicates that the base station and the relay node are point-to-multipoint
  • the base station and the relay node cooperate in a common information manner.
  • the backward compatibility (compatible with the old version of the user) is ensured by the method of the invention, and the backward compatibility of the user is accurately ensured, the link cost of the base station to the relay station is reduced, and the throughput of the whole system is improved. the amount.
  • FIG. 1 is a flowchart of a method for implementing relay node cooperation according to the present invention
  • FIG. 2 is a schematic structural diagram of a system for implementing relay node cooperation according to the present invention
  • FIG. 3 is a schematic diagram of cooperation between an eNB and an RN in a unique information form according to Embodiment 1 of the present invention
  • FIG. 4 is a schematic diagram of cooperation between an eNB and an RN in the form of public information according to Embodiment 2 of the present invention
  • FIG. 5 is a schematic diagram of cooperation between an eNB and an RN in a unique information form and a public information form according to Embodiment 3 of the present invention. detailed description
  • FIG. 1 is a flowchart of a method for implementing relay node cooperation according to the present invention, which is applicable to cooperation between a base station and one or more relay nodes, between two or more relay nodes, as shown in FIG.
  • the method includes the following steps:
  • Step 100 The base station selects a cooperation mode according to a preset cooperation condition.
  • the cooperation condition indicates that the base station and the relay node are point-to-point
  • the process proceeds to step 101.
  • the cooperation condition indicates that the base station and the relay node are point-to-multipoint
  • the process proceeds. Step 102.
  • the cooperation condition is: whether the user terminal can correctly acquire the base station-to-user link and the channel quality of the relay node to the user link, and if so, the cooperation condition indicates that the base station and the relay node are point-to-point; if not, The cooperation condition indicates that there is a point-to-multipoint between the base station and the relay node.
  • the cooperation condition may also be: whether the user terminal is only within the coverage of the base station and a certain relay node, and if so, the cooperation condition indicates that the base station and the relay node are point-to-point; otherwise, the user terminal covers the base station and the multiple relay nodes. When the range or the user terminal is only within the coverage of multiple relay nodes, the cooperation condition indicates that the base station and the relay node are point-to-multipoint.
  • the base station can obtain the result of performing capability negotiation with the base station in the user terminal registration, and
  • the specific implementation belongs to the technical means used by those skilled in the art, and details are not described herein again.
  • the base station can be implemented by acquiring the location of the user terminal by using an existing positioning method, etc., and the specific implementation is a technical means that is familiar to those skilled in the art, and details are not described herein again.
  • Step 101 The base station and the relay node cooperate by using a unique information manner.
  • the specific implementation of the step includes: the base station transmits the service information of each relay node by using independent coding, and the base station identifies the control information of each relay node by using different relay node IDs (RN-ID, Relay Node-ID) and transmits.
  • Each relay node only forwards data to be cooperated by itself. That is, using a point-to-point unicast form.
  • the method for independent coding is: The base station performs channel coding, CRC check, constellation modulation, mapping, and the like on the service information of each relay node.
  • the control information includes resource allocation information indicating a resource block to which the service information belongs, a modulation method, and the like.
  • the method for the relay node to forward only the data to be coordinated by the relay node includes: First, the relay node uses the RN-ID to blindly detect the control information that belongs to itself, and obtains the service information to be coordinated according to the resource allocation information in the control information, and according to the The modulation mode in the control information demodulates the service information. Then, the base station separately encodes and transmits the service information of each relay node, and simultaneously identifies the control information of each UE by using different UE IDs, and transmits each relay node.
  • each UE uses its own UE-ID to detect the control information of its own, and obtains the service information to be coordinated according to the resource allocation information in the control information. And demodulate its own business information according to the modulation method in the control information.
  • Step 102 The base station and the relay node cooperate by using a common information manner.
  • the specific implementation of the step includes: the base station uses the joint coding of the service information of each relay node, and the base station identifies each relay node by using the same relay node ID (RC-ID, Relay Cooperation-ID, also referred to as a collaboration identifier).
  • the control information is transmitted and transmitted, and each relay node forwards all data to be coordinated, that is, a point-to-multipoint broadcast form.
  • the method of joint coding is as follows: The base station performs channel coding, CRC check, constellation modulation, resource allocation, mapping, and the like together with the service information of each relay node.
  • the control information includes resource allocation information indicating a resource block to which the service information belongs, a modulation method, and the like. Further, when the relay node includes two or more, if the user terminal is only within the coverage of the plurality of relay nodes, the common information is used to cooperate among the relay nodes.
  • the method for the relay node to forward all the data to be coordinated includes: First, the relay node uses the RC-ID to detect the control information blindly, obtains the service information to be coordinated according to the resource allocation information in the control information, and follows the modulation mode in the control information. Demodulate business information. Among them, different The blind detection of the control information by the relay station is not limited to a sequence; then, the base station separately encodes and transmits the service information of each relay node, and simultaneously identifies the control information of each UE by using different UE IDs, and transmits each relay node. The service information of each relay node is transmitted in the same code as the base station, respectively. Finally, each UE uses its own UE-ID to blindly detect its own control information, and obtains its own cooperation according to the resource allocation information in the control information. Service information, and demodulate its own service information according to the modulation method in the control information.
  • the relay node forwards all the data to be coordinated.
  • the method includes: First, the relay node uses the RC-ID to detect the control information blindly, obtains the service information to be coordinated according to the resource allocation information in the control information, and demodulates the service information according to the modulation mode in the control information.
  • the blind detection of the control information by different relay stations does not limit the sequence; then, each relay node performs the same coding and transmission for the service information of each relay node, and respectively identifies the UEs with different UE IDs.
  • each UE blindly detects its own control information by using its own UE-ID, and obtains the service information to be coordinated according to the resource allocation information in the control information, and according to the modulation mode in the control information
  • the business information is demodulated.
  • a system for implementing relay node cooperation which is suitable for cooperation between a base station and one or more relay nodes, between two or more relay nodes.
  • 2 is a schematic structural diagram of a system for implementing relay node cooperation according to the present invention. As shown in FIG. 2, the system includes a base station and a relay node, where
  • a base station configured to select a cooperation mode according to a preset cooperation condition, and when the cooperation condition indicates that the base station and the relay node are point-to-point, send a unique information mode notification to the relay node; when the cooperation condition indicates that the base station and the relay node are points For multiple points, send public information to the relay node Notification.
  • the relay node is configured to cooperate according to the notification from the base station, when receiving the notification of the unique information mode, the base station and the relay node cooperate by using the unique information manner; when receiving the notification of the public information mode, the base station and the relay node Collaborate through public information.
  • the relay nodes When the relay node includes two or more, further, when the relay node receives the notification of the public information manner, the relay nodes cooperate by using the common information manner.
  • the base station includes a cooperation condition setting unit, a selection unit, and a sending unit, where the cooperation condition setting unit is configured to set a cooperation condition;
  • a selecting unit configured to select a cooperation mode according to a preset cooperation condition, and when the cooperation condition indicates that the base station and the relay node are point-to-point, send a unique information mode notification to the relay node; when the cooperation condition indicates that the base station and the relay node are When the point is multi-point, the public information mode notification is sent to the relay node;
  • a sending unit configured to send the service information and the control information to the relay node according to the selection result of the selecting unit.
  • cooperation condition set by the cooperation condition setting unit is: whether the user terminal can correctly acquire the base station to user link, and the channel quality of the relay node to the user link;
  • the selecting unit is configured to: if the user terminal can correctly acquire the base station to user link, and the channel quality of the relay node to the user link, the cooperation condition indicates that the base station and the relay node are point-to-point, Following the node sending a unique information notification;
  • the cooperation condition indicates that the base station and the relay node are point-to-multipoint, and send to the relay node. Public information method notification.
  • the cooperation condition set by the cooperation condition setting unit is: whether the user terminal is only within the coverage of the base station and a certain relay node;
  • the selecting unit is configured to: if the user terminal only covers the base station and a certain relay node Within the scope, the cooperation condition indicates that the base station and the relay node are point-to-point, and the special information mode notification is sent to the relay node;
  • the cooperation condition indicates that the base station and the relay node are point-to-multipoint , Send a public information mode notification to the relay node.
  • the sending unit is configured to separately transmit the service information of each relay node, and identify the control information of each relay node by using the identifier RN-ID of the different relay node.
  • the sending unit is configured to perform joint coding on the service information of each relay node, and identify and transmit the control information of each relay node by using the identifier RC-ID of the same relay node.
  • the relay node includes a first cooperation processing unit and a second cooperation processing unit;
  • the first cooperation processing unit is configured to forward only the data to be coordinated according to the base station and the relay node, and the first cooperation processing unit is specifically configured to use
  • the RN-ID is detected by its own control information, and the service information to be coordinated is obtained according to the resource allocation information in the control information, and the service information is demodulated according to the modulation mode in the control information.
  • the second cooperation processing unit is configured to forward all data to be coordinated.
  • the second cooperation processing unit is configured to: use the RC-ID to detect the control information, obtain the service information to be coordinated according to the resource allocation information in the control information, and demodulate the service information according to the modulation mode in the control information.
  • RN1, RN2, RN3, and RN4 each RN covers one UE, and the eNB can cover the four UEs, which are respectively represented as UE1, UE2, UE3, UE4, 4
  • the service information corresponding to the user terminals is represented as datal, data2, and data3, respectively. Data4; It is assumed that in a certain subframe, all four UEs need to be transmitted in a cooperative manner, and the channel quality threshold is set to Th in the system.
  • FIG. 3 is a schematic diagram of cooperation between an eNB and an RN in a unique information form according to Embodiment 1 of the present invention, assuming that UE1 (UE2) measures channel quality of eNB to UE1 (UE2) and RN1 ⁇ RN4 to UE1 (UE2), and After the channel quality of the threshold Th is fed back to the eNB and the RN, the number of RNs whose channel quality exceeds the threshold Th is one, and the corresponding UE1 is RN1, and the corresponding UE2 is RN2, and the eNB and the RN need to transmit in a coordinated manner. At the time, the eNB and the RN1, and the eNB and the RN2 cooperate in a unique information form.
  • the eNB performs channel coding, CRC check, constellation modulation, resource allocation, mapping, etc. on datal and data2, respectively, and transmits them by RN1-ID and RN2-ID respectively.
  • the control information of RN 1 and RN 2 is identified and transmitted.
  • RN1 and RN2 use RN1-ID, RN2-ID to detect the control information of the BD1-ID, and obtain the service information to be coordinated according to the resource allocation information in the control information, and the service information of itself according to the modulation mode in the control information. Perform demodulation.
  • the eNB and the RN1 perform the same channel coding, CRC check, constellation modulation, resource allocation, mapping, etc. processing on the data1; the eNB and the RN2 perform the same channel on the data2.
  • the processing is performed after coding, CRC check, constellation modulation, resource allocation, mapping, etc.; and the control information of UE1 and UE2 are respectively identified by UE1-ID and UE2-ID and transmitted.
  • the UE1 and the UE2 use the UE1-ID and the UE2-ID to detect the control information of the UE, and obtain the service information to be coordinated according to the resource allocation information in the control information, and perform the service information on the service according to the modulation mode in the control information. demodulation.
  • the implementation of the first embodiment ensures the backward compatibility of the user (compatible with the old version of the user), and cooperates with the unique information form, thereby reducing the error rate or the block error rate of the user side, and improving the Throughput of the entire system.
  • FIG. 4 is a schematic diagram of cooperation between an eNB and an RN in the form of public information according to Embodiment 2 of the present invention.
  • UE1 UE2
  • UE1 ⁇ RN4 UE1
  • eNB and RN need to transmit in cooperative mode, between eNB and RN1, and eNB Collaborate with RN2 in the form of public information.
  • the eNB transmits datal and data2 to perform channel coding, CRC check, constellation modulation, resource allocation, mapping, etc., and simultaneously identifies RN1 and RN2 by RC-ID. Control information and launch.
  • the RN1 and the RN2 use the RC-ID to detect the control information belonging to the public collaboration, and obtain the service information to be coordinated according to the resource allocation information in the control information, and demodulate the service information to be coordinated according to the modulation mode in the control information.
  • the eNB, RN1, and RN2 perform the same channel coding, CRC check, constellation modulation, resource allocation, mapping, etc. processing on the data1; eNB, RN1, and RN2 pair data2
  • the same channel coding, CRC check, constellation modulation, resource allocation, mapping, etc. are performed, and the control information of UE1 and UE2 are respectively identified by UE1-ID and UE2-ID and transmitted.
  • the UE1 and the UE2 use the UE1-ID and the UE2-ID to detect the control information of the UE, and obtain the service information to be coordinated according to the resource allocation information in the control information, and perform the service information on the service according to the modulation mode in the control information. demodulation.
  • This example guarantees backward compatibility (compatible with old versions of users), and cooperates in the form of public information, which saves the overhead of the base station to the relay node link, reduces the bit error rate or block error rate of the user side, and improves The throughput of the entire system.
  • FIG. 5 is a schematic diagram of cooperation between an eNB and an RN in a form of combining unique information and public information in the third embodiment of the present invention.
  • UE1 UE2
  • RN1 RN2
  • the eNB and the RN1 cooperate with each other in the form of unique information.
  • both UE3 and UE4 are only within the coverage of RN3 and RN4, and need to be transmitted in a coordinated manner.
  • the eNB and the RN3, and the eNB and the RN4 cooperate in the form of public information.
  • the eNB performs channel coding, CRC check, constellation modulation, resource allocation, mapping, etc. on datal and data2, respectively, and transmits them by RN1-ID and RN2-ID respectively. Identifying control information of RN1 and RN2 and transmitting; eNB transmits data3 and data4 to perform channel coding, CRC check, constellation modulation, resource allocation, mapping, etc., and simultaneously identify control information of RN 1 and RN2 by RC-ID And launch.
  • RN1 and RN2 use RN1-ID, RN2-ID to detect the control information of the BD1-ID, and obtain the service information to be coordinated according to the resource allocation information in the control information, and the service information of itself according to the modulation mode in the control information.
  • RN3 and RN4 use RC-ID to detect the control information belonging to the public collaboration, and obtain the service information to be coordinated according to the resource allocation information in the control information, and perform the service information to be coordinated according to the modulation mode in the control information. demodulation.
  • the eNB and the RN1 perform the same channel coding, CRC check, constellation modulation, resource allocation, mapping, etc. processing on the data1; the eNB and the RN2 perform the same channel on the data2.
  • the processing is performed after coding, CRC check, constellation modulation, resource allocation, mapping, etc.; and the control information of UE1 and UE2 are respectively identified by UE1-ID and UE2-ID and transmitted.
  • RN3 and RN4 perform the same channel coding, CRC check, constellation modulation, resource allocation, mapping, etc. processing on data3; RN3 and RN4 perform the same channel coding, CRC check, constellation modulation, resource allocation, mapping, etc. on data4.
  • the UE1, the UE2, the UE3, and the UE4 use the UE1-ID, the UE2-ID, the UE3-ID, and the UE4-ID to detect the control information of the UE, and obtain the service information to be coordinated according to the resource allocation information in the control information.
  • the modulation method in the control information demodulates its own service information.
  • the backward compatibility (compatible with the old version of the user) is ensured, and the unique information form is used for cooperation, which reduces the bit error rate or the block error rate of the user side, and improves the throughput of the entire system;
  • the information form cooperates, which saves the overhead of the base station to the relay node link, reduces the bit error rate or the block error rate of the user side, and improves the throughput of the entire system.

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Description

一种实现中继节点协作的方法及系统 技术领域
本发明涉及协作技术, 尤指一种实现中继节点协作的方法及系统。 背景技术
B3G/4G的研究目标是汇集蜂窝、 固定无线接入、 游牧、 无线区域网络 等接入系统,结合全 IP网络,在高速和低速移动环境下分别为用户提供峰值 速率达 100Mbps以及 lGbps的无线传输能力, 并且实现蜂窝系统、 区域性无 线网络、 广播、 电视卫星通信的无缝衔接, 使得人类实现 "任何人在任何 时间、 任何地点与其他任何人实现任何方式的通信"。 为了配合无缝衔接, 中继(Relay )技术是一种有效的措施, Relay技术既可以增加小区的覆盖也 可以增加小区容量。 但是, 在引入 Relay技术后, 会引发较多的问题如资源 利用等。
协作技术是多跳系统中一种宏观的或分布式 MIMO系统,协作技术可以 应用于上下行接入链路中。 协作技术类似于相邻演进基站 eNB之间的宏分 集, 是在小区中利用 eNB和各中继节点 ( RN , Relay Node )之间的协作发 射来实现的。 通过利用不同 eNB和 RN的发射天线来发送相关的信号, 以实 现协作分集。 通过协作技术, 空间分集作用可以提供更好的链路误码率 /误 块率(BER/BLER )性能, 同时空间复用可为系统带来更高的频谱效率。 对 于引入 RN节点的 eNB内的资源协作可以看作是 eNB内多点协作。
目前, 对于 eNB和 RN已有较多研究, 但对于 eNB和多个 RN间、 多 个 RN间的资源协作的研究较少,尤其在正交频分复用(OFDM, Orthogonal Frequency Division Multiplexing ) 系统中存在 RN时, 对 eNB和多个 RN间 协作或多个 RN间协作的实现没有提出解决方案。 目前的系统如高级的长期演进系统 ( LTE- A , Long Term Evolution Advanced )中存在不同版本的 UEs (如 R8 UEs、 R9 UEs、 RIO UEs ), 其中, 为了充分考虑 R8 UEs的后向兼容性, 在 eNB和 RN之间协作时, RN必须 发射和 eNB同样的导频, 用于 R8 UEs测量一个综合的信道质量, 并将测 量得到的信道质量反馈给 eNB和 RN用于下次业务调度。 如果 RN不发射 和 eNB同样的导频,就不能保证 RN到 R8 UEs的链路质量的正确获取,从 而提高了链路 BER/BLER„
另夕卜, RN仅仅发射自身下属的 UEs的业务信息, 降低了 RN的带宽利 用率, 并且增加了 eNB到 RN链路的开销, 降低了整个系统的吞吐量。 发明内容
有鉴于此, 本发明的主要目的在于提供一种实现中继节点协作的方法, 能够筒单、 准确地保证用户的后向兼容性, 降低基站到中继站的链路开销, 提高整个系统的吞吐量。
本发明的另一目的在于提供一种实现中继节点协作的系统, 能够筒单、 准确地保证用户的后向兼容性, 降低基站到中继站的链路开销, 提高整个 系统的吞吐量。
为达到上述目的, 本发明的技术方案是这样实现的:
一种实现中继节点协作的方法, 该方法包括:
基站根据预先设置的协作条件选择协作方式, 当协作条件表明基站与 中继节点间为点对点时, 基站与中继节点之间采用特有信息方式进行协作; 当协作条件表明基站与中继节点间为点对多点时, 基站与中继节点之 间采用公共信息方式进行协作。
所述协作条件为: 用户终端是否能够正确获取基站到用户链路, 以及 中继节点到用户链路的信道质量;
所述选择协作方式的方法为: 如果用户终端能够正确获取所述基站到 用户链路, 以及所述中继节点到用户链路的信道质量, 则协作条件表明基 站与中继节点间为点对点;
如果用户终端不能够正确获取所述基站到用户链路, 以及所述中继节 点到用户链路的信道质量, 则协作条件表明基站与中继节点间为点对多点。
所述协作条件为: 用户终端是否仅在基站和某个中继节点覆盖范围内; 所述选择协作方式的方法为: 如果用户终端仅在所述基站和某个中继 节点覆盖范围内, 则所述协作条件表明基站与中继节点间为点对点;
如果用户终端在所述基站和多个中继节点覆盖范围内, 或者用户终端 仅在所述多个中继节点覆盖范围内时, 所述协作条件表明基站与中继节点 间为点对多点。
所述基站与中继节点之间采用特有信息方式进行协作具体包括: 所述基站对各中继节点的业务信息采用独立编码后发射, 基站以不同 的中继节点的标识 RN-ID标识各中继节点的控制信息并发射, 每个中继节 点仅转发属于自身的待协作的数据。
所述独立编码的方法为: 所述基站分别对各中继节点的业务信息进行 信道编码、 CRC校验、 星座调制、 映射处理;
所述控制信息至少包括: 表明业务信息所属资源块的资源分配信息、 调制方式;
所述中继节点仅转发属于自身的待协作的数据的方法包括:
所述中继节点利用 RN-ID盲检测属于自身的控制信息, 根据所述控制 信息中的资源分配信息获取待协作的业务信息, 并按照控制信息中的调制 方式对业务信息进行解调;
所述基站对各中继节点的业务信息分别编码后发射, 同时以不同的用 户终端的 ID分别标识各用户终端的控制信息并发射, 各中继节点对属于自 身的业务信息进行与基站相同的编码后发射; 所述用户终端分别利用各自的 UE-ID盲检测属于自身的控制信息, 根 据控制信息中的资源分配信息获取自身待协作的业务信息, 并按照控制信 息中的调制方式对自身的业务信息进行解调。
所述基站与中继节点之间采用公共信息方式进行协作具体包括: 所述基站对各中继节点的业务信息采用联合编码后发射, 基站以相同 的中继节点的标识 RC-ID标识各中继节点的控制信息并发射, 每个中继节 点转发所有待协作的数据。
所述联合编码的方法为: 所述基站将各中继节点的业务信息一起进行 信道编码、 CRC校验、 星座调制、 资源分配、 映射处理;
所述控制信息至少包括: 表明业务信息所属资源块的资源分配信息、 调制方式;
所述中继节点转发所有待协作的数据的方法包括:
所述中继节点利用 RC-ID盲检测控制信息, 根据控制信息中的资源分 配信息获取待协作的业务信息, 并按照控制信息中的调制方式对业务信息 进行解调;
所述基站对各中继节点的业务信息分别编码后发射, 同时以不同的用 户终端的 ID分别标识各用户终端的控制信息并发射, 每个中继节点对各中 继节点的业务信息分别进行与基站相同的编码后发射;
所述用户终端分别利用各自的 UE-ID盲检测属于自身的控制信息, 根 据控制信息中的资源分配信息获取自身待协作的业务信息, 并按照控制信 息中的调制方式对自身的业务信息进行解调。
所述中继节点为两个或两个以上, 在所述用户终端仅在多个中继节点 覆盖范围内时, 所述中继节点之间采用公共信息方式进行协作;
所述中继节点转发所有待协作的数据的方法包括:
所述中继节点利用 RC-ID盲检测控制信息, 根据控制信息中的资源分 配信息获取待协作的业务信息, 并按照控制信息中的调制方式对业务信息 进行解调;
每个中继节点对各中继节点的业务信息分别进行相同的编码后发射, 同时以不同的用户终端的 ID分别标识各用户终端的控制信息并发射;
所述用户终端分别利用各自的 UE-ID盲检测属于自身的控制信息, 根 据控制信息中的资源分配信息获取自身待协作的业务信息, 并按照控制信 息中的调制方式对自身的业务信息进行解调。
所述不同中继站对控制信息的盲检测不限定先后顺序。
一种实现中继节点协作的系统, 该系统包括基站, 中继节点, 其中, 基站, 用于根据预先设置的协作条件选择协作方式, 当协作条件表明 基站与中继节点间为点对点时, 向中继节点发送特有信息方式通知; 当协 作条件表明基站与中继节点间为点对多点时, 向中继节点发送公共信息方 式通知;
中继节点, 用于根据来自基站的通知, 当接收到特有信息方式通知时, 基站与中继节点之间采用特有信息方式进行协作; 当接收到公共信息方式 通知时, 基站与中继节点之间采用公共信息方式进行协作。
所述中继节点为两个或两个以上时, 所述中继节点在接收到公共信息 方式通知时, 各中继节点之间采用公共信息方式进行协作。
所述基站包括协作条件设置单元、 选择单元和发送单元, 其中, 协作条件设置单元, 用于设置协作条件;
选择单元, 用于根据预先设置的协作条件选择协作方式, 当协作条件 表明基站与中继节点间为点对点时, 向中继节点发送特有信息方式通知; 当协作条件表明基站与中继节点间为点对多点时, 向中继节点发送公共信 息方式通知;
发送单元, 用于按照选择单元的选择结果向中继节点发送业务信息和 控制信息。
当所述协作条件设置单元设置的协作条件为: 用户终端是否能够正确 获取基站到用户链路, 以及中继节点到用户链路的信道质量时;
所述选择单元用于, 如果用户终端能够正确获取所述基站到用户链路, 以及所述中继节点到用户链路的信道质量, 则协作条件表明基站与中继节 点间为点对点, 向中继节点发送特有信息方式通知;
如果用户终端不能够正确获取所述基站到用户链路, 以及所述中继节 点到用户链路的信道质量, 则协作条件表明基站与中继节点间为点对多点, 向中继节点发送公共信息方式通知。
当所述协作条件设置单元设置的协作条件为: 用户终端是否仅在基站 和某个中继节点覆盖范围内;
所述选择单元用于, 如果用户终端仅在所述基站和某个中继节点覆盖 范围内, 则所述协作条件表明基站与中继节点间为点对点, 向中继节点发 送特有信息方式通知;
如果用户终端在所述基站和多个中继节点覆盖范围内, 或者用户终端 仅在所述多个中继节点覆盖范围内时, 所述协作条件表明基站与中继节点 间为点对多点, 向中继节点发送公共信息方式通知。
当所述基站与中继节点之间采用特有信息方式进行协作时,
所述发送单元, 用于对各中继节点的业务信息采用独立编码后发射, 以不同的中继节点的标识 RN-ID标识各中继节点的控制信息并发射。
当所述基站与中继节点之间采用公共信息方式进行协作时,
所述发送单元, 用于对各中继节点的业务信息采用联合编码后发射, 以相同的中继节点的标识 RC-ID标识各中继节点的控制信息并发射。
所述中继节点包括第一协作处理单元和第二协作处理单元;
当所述基站与中继节点之间采用特有信息方式进行协作时, 所述第一 协作处理单元, 用于仅转发属于自身的待协作的数据;
当所述基站与中继节点之间采用公共信息方式进行协作时, 所述第二 协作处理单元, 用于转发所有待协作的数据。
所述第一协作处理单元具体用于, 利用 RN-ID盲检测属于自身的控制 信息, 根据所述控制信息中的资源分配信息获取待协作的业务信息, 并按 照控制信息中的调制方式对业务信息进行解调。
所述第二协作处理单元具体用于, 利用 RC-ID盲检测控制信息, 根据 控制信息中的资源分配信息获取待协作的业务信息, 并按照控制信息中的 调制方式对业务信息进行解调。
从上述本发明提供的技术方案可以看出, 基站根据预先设置的协作条 件选择协作方式, 当协作条件表明基站与中继节点间为点对点时, 基站与 中继节点之间采用特有信息方式进行协作; 当协作条件表明基站与中继节 点间为点对多点时, 基站与中继节点之间采用公共信息方式进行协作。 通 过本发明方法保证了后向兼容性(兼容旧版本的用户), 而且, 筒单、 准确 地保证了用户的后向兼容性, 降低了基站到中继站的链路开销, 提高了整 个系统的吞吐量。 附图说明
图 1为本发明实现中继节点协作的方法的流程图;
图 2为本发明实现中继节点协作的系统的组成结构示意图;
图 3为本发明实施例一中 eNB与 RN之间以特有信息形式协作的示意 图;
图 4为本发明实施例二中 eNB与 RN之间以公共信息形式协作的示意 图;
图 5为本发明实施例三中 eNB与 RN之间结合特有信息形式和公共信 息形式协作的示意图。 具体实施方式
图 1 为本发明实现中继节点协作的方法的流程图, 适用于基站和一个 或一个以上中继节点间、 两个或两个以上中继节点间的协作, 如图 1所示, 本发明方法包括以下步骤:
步骤 100: 基站根据预先设置的协作条件选择协作方式, 当协作条件表 明基站与中继节点间为点对点时, 进入步骤 101 ; 当协作条件表明基站与中 继节点间为点对多点时, 进入步骤 102。
本步骤中, 协作条件为: 用户终端是否能够正确获取基站到用户链路, 以及中继节点到用户链路的信道质量, 如果能够, 协作条件表明基站与中 继节点间为点对点; 如果不能, 协作条件表明基站与中继节点间为点对多 点。
协作条件还可以为: 用户终端是否仅在基站和某个中继节点覆盖范围 内, 如果是, 协作条件表明基站与中继节点间为点对点; 否则, 用户终端 在基站和多个中继节点覆盖范围内或者用户终端仅在多个中继节点覆盖范 围内时, 协作条件表明基站与中继节点间为点对多点。
需要说明的是, 对于用户终端是否能够正确获取基站到用户链路, 以 及中继节点到用户链路的信道质量, 基站是可以根据在用户终端注册中与 基站进行能力协商的结果获得的, 其具体实现属于本领域技术人员惯用技 术手段, 这里不再赘述。 对于用户终端是否仅在基站和某个中继节点覆盖 范围内, 基站可以通过采用现有定位等方法获取用户终端的位置来实现, 具体实现属于本领域技术人员惯用技术手段, 这里不再赘述。
步骤 101 : 基站与中继节点之间采用特有信息方式进行协作。
本步骤具体实现包括: 基站对各中继节点的业务信息采用独立编码后 发射, 基站以不同的中继节点的 ID ( RN-ID, Relay Node-ID )标识各中继 节点的控制信息并发射, 每个中继节点仅转发属于自身的待协作的数据, 即采用点到点的单播形式。
其中, 独立编码的方法为: 基站分别对各中继节点的业务信息进行信 道编码、 CRC校验、 星座调制、 映射等处理。
控制信息包括表明业务信息所属资源块的资源分配信息、 调制方式等。 中继节点仅转发属于自身的待协作的数据的方法包括: 首先, 中继节 点利用 RN-ID盲检测属于自身的控制信息,根据控制信息中的资源分配信息 获取待协作的业务信息, 并按照控制信息中的调制方式对业务信息进行解 调; 接着, 基站对各中继节点的业务信息分别编码后发射, 同时以不同的 UE的 ID分别标识各 UE的控制信息并发射,各中继节点对属于自身的业务信 息进行与基站相同的编码后发射; 最后, 各 UE分别利用各自的 UE-ID盲检 测属于自身的控制信息, 根据控制信息中的资源分配信息获取自身待协作 的业务信息, 并按照控制信息中的调制方式对自身的业务信息进行解调。
步骤 102: 基站与中继节点之间采用公共信息方式进行协作。
本步骤具体实现包括: 基站对各中继节点的业务信息采用联合编码后 发射, 基站以相同的中继节点的 ID ( RC-ID, Relay Cooperation-ID, 也称 协作标识)标识各中继节点的控制信息并发射, 每个中继节点转发所有待 协作的数据, 即采用点到多点的广播形式。
其中, 联合编码的方法为: 基站将各中继节点的业务信息一起进行信 道编码、 CRC校验、 星座调制、 资源分配、 映射等处理。
控制信息包括表明业务信息所属资源块的资源分配信息、 调制方式等。 进一步地, 在中继节点包括两个或两个以上时, 如果用户终端仅在多 个中继节点覆盖范围内, 在中继节点之间采用公共信息方式进行协作。
中继节点转发所有待协作的数据的方法包括: 首先, 中继节点利用 RC-ID 盲检测控制信息, 根据控制信息中的资源分配信息获取待协作的业 务信息, 并按照控制信息中的调制方式对业务信息进行解调。 其中, 不同 中继站对控制信息的盲检测不限定先后顺序; 接着, 基站对各中继节点的 业务信息分别编码后发射, 同时以不同的 UE的 ID分别标识各 UE的控制 信息并发射, 每个中继节点对各中继节点的业务信息分别进行与基站相同 的编码后发射; 最后, 各 UE分别利用各自的 UE-ID盲检测属于自身的控 制信息, 根据控制信息中的资源分配信息获取自身待协作的业务信息, 并 按照控制信息中的调制方式对自身的业务信息进行解调。
在中继节点包括两个或两个以上时, 如果用户终端仅在多个中继节点 覆盖范围内, 在中继节点之间采用公共信息方式进行协作时, 中继节点转 发所有待协作的数据的方法包括: 首先, 中继节点利用 RC-ID盲检测控制 信息, 根据控制信息中的资源分配信息获取待协作的业务信息, 并按照控 制信息中的调制方式对业务信息进行解调。 其中, 不同中继站对控制信息 的盲检测不限定先后顺序; 接着, 每个中继节点对各中继节点的业务信息 分别进行相同的编码后发射, 同时以不同的 UE的 ID分别标识各 UE的控 制信息并发射; 最后, 各 UE分别利用各自的 UE-ID盲检测属于自身的控 制信息, 根据控制信息中的资源分配信息获取自身待协作的业务信息, 并 按照控制信息中的调制方式对自身的业务信息进行解调。
需要说明的是,对于 UE侧对业务信息的接收的实现属于本领域技术人 员惯用技术手段。
对应本发明的方法, 还提供一种实现中继节点协作的系统, 适用于基 站和一个或一个以上中继节点间、 两个或两个以上中继节点间的协作。 图 2 为本发明实现中继节点协作的系统的组成结构示意图, 如图 2所示, 该系 统包括基站和中继节点, 其中,
基站, 用于根据预先设置的协作条件选择协作方式, 当协作条件表明 基站与中继节点间为点对点时, 向中继节点发送特有信息方式通知; 当协 作条件表明基站与中继节点间为点对多点时, 向中继节点发送公共信息方 式通知。
中继节点, 用于根据来自基站的通知, 当接收到特有信息方式通知时, 基站与中继节点之间采用特有信息方式进行协作; 当接收到公共信息方式 通知时, 基站与中继节点之间采用公共信息方式进行协作。
所述中继节点包括两个或两个以上时, 进一步地, 中继节点在接收到 公共信息方式通知时, 中继节点之间采用公共信息方式进行协作。
所述基站包括协作条件设置单元、 选择单元和发送单元, 其中, 协作条件设置单元, 用于设置协作条件;
选择单元, 用于根据预先设置的协作条件选择协作方式, 当协作条件 表明基站与中继节点间为点对点时, 向中继节点发送特有信息方式通知; 当协作条件表明基站与中继节点间为点对多点时, 向中继节点发送公共信 息方式通知;
发送单元, 用于按照选择单元的选择结果向中继节点发送业务信息和 控制信息。
当所述协作条件设置单元设置的协作条件为: 用户终端是否能够正确 获取基站到用户链路, 以及中继节点到用户链路的信道质量时;
所述选择单元用于, 如果用户终端能够正确获取所述基站到用户链路, 以及所述中继节点到用户链路的信道质量, 则协作条件表明基站与中继节 点间为点对点, 向中继节点发送特有信息方式通知;
如果用户终端不能够正确获取所述基站到用户链路, 以及所述中继节 点到用户链路的信道质量, 则协作条件表明基站与中继节点间为点对多点, 向中继节点发送公共信息方式通知。
当所述协作条件设置单元设置的协作条件为: 用户终端是否仅在基站 和某个中继节点覆盖范围内;
所述选择单元用于, 如果用户终端仅在所述基站和某个中继节点覆盖 范围内, 则所述协作条件表明基站与中继节点间为点对点, 向中继节点发 送特有信息方式通知;
如果用户终端在所述基站和多个中继节点覆盖范围内, 或者用户终端 仅在所述多个中继节点覆盖范围内时, 所述协作条件表明基站与中继节点 间为点对多点, 向中继节点发送公共信息方式通知。
当所述基站与中继节点之间采用特有信息方式进行协作时,
所述发送单元, 用于对各中继节点的业务信息采用独立编码后发射, 以不同的中继节点的标识 RN-ID标识各中继节点的控制信息并发射。
当所述基站与中继节点之间采用公共信息方式进行协作时,
所述发送单元, 用于对各中继节点的业务信息采用联合编码后发射, 以相同的中继节点的标识 RC-ID标识各中继节点的控制信息并发射。
所述中继节点包括第一协作处理单元和第二协作处理单元;
当所述基站与中继节点之间采用特有信息方式进行协作时, 所述第一 协作处理单元, 用于仅转发属于自身的待协作的数据; 所述第一协作处理 单元具体用于, 利用 RN-ID盲检测属于自身的控制信息, 根据所述控制信 息中的资源分配信息获取待协作的业务信息, 并按照控制信息中的调制方 式对业务信息进行解调。
当所述基站与中继节点之间采用公共信息方式进行协作时, 所述第二 协作处理单元, 用于转发所有待协作的数据。 所述第二协作处理单元具体 用于, 利用 RC-ID盲检测控制信息, 根据控制信息中的资源分配信息获取 待协作的业务信息, 并按照控制信息中的调制方式对业务信息进行解调。 设 eNB系统中共有 4个 RN, 分别表示为 RN1、 RN2、 RN3、 RN4; 每个 RN覆盖 1个 UE, 并且 eNB能覆盖到这 4个 UE, 分别表示为 UE1、 UE2、 UE3、 UE4, 4个用户终端对应的业务信息分别表示为 datal、 data2、 data3、 data4; 假设在某一个子帧内, 这 4个 UE都有业务需要采用协作方式发送, 并且系统中设定信道质量门限为 Th。
图 3为本发明实施例一中 eNB与 RN之间以特有信息形式协作的示意 图,假设 UE1( UE2 )测量 eNB到 UE1( UE2 ),以及 RN1~RN4到 UE1( UE2 ) 的信道质量, 并将超过门限 Th的信道质量反馈给 eNB和 RN后得到,信道 质量超过门限 Th的 RN个数为一个, 4叚设对应 UE1为 RN1 , 对应 UE2为 RN2, 并且 eNB与 RN间需要采用协作方式进行发射时, eNB和 RN1之 间, 以及 eNB和 RN2之间以特有信息形式进行协作。
首先, 如图 3中虚直线的左边部分所示, eNB对 datal和 data2分别进行信 道编码、 CRC校验、星座调制、资源分配、映射等处理后发射,同时以 RN1-ID 和 RN2-ID分别标识 RN 1和 RN2的控制信息并发射。 RN 1和 RN2分别利用 RN1-ID, RN2-ID盲检测属于自身的控制信息, 根据控制信息中的资源分配 信息获取自身待协作的业务信息, 并按照控制信息中的调制方式对自身的 业务信息进行解调。
然后, 如图 3中虚直线的右边部分所示, eNB和 RN1对 datal进行相同的 信道编码、 CRC校验、 星座调制、 资源分配、 映射等处理后发射; eNB和 RN2对 data2进行相同的信道编码、 CRC校验、 星座调制、 资源分配、 映射 等处理后发射; 同时以 UE1-ID和 UE2-ID分别标识 UE1和 UE2的控制信息并 发射。 UE1和 UE2分别利用 UE1-ID、 UE2-ID盲检测属于自身的控制信息, 根据控制信息中的资源分配信息获取自身待协作的业务信息, 并按照控制 信息中的调制方式对自身的业务信息进行解调。
本实施例一的实现筒单、 准确地保证了用户的后向兼容性(兼容旧版 本的用户), 而且采用特有信息形式进行协作, 降低了用户侧的误码率或误 块率, 提高了整个系统的吞吐量。
图 4为本发明实施例二中 eNB与 RN之间以公共信息形式协作的示意 图, 假设 UE1 ( UE2 )无法测量 eNB到 UE1 ( UE2 ), 以及 RN1~RN4到 UE1 ( UE2 )的信道质量,并且 eNB与 RN间需要采用协作方式进行发射时, eNB和 RN1之间, 以及 eNB和 RN2之间以公共信息形式进行协作。
首先, 如图 4中虚直线的左边部分所示, eNB将 datal和 data2—起进行信 道编码、 CRC校验、星座调制、资源分配、映射等处理后发射, 同时以 RC-ID 标识 RN1和 RN2的控制信息并发射。 RN1和 RN2分别利用 RC-ID盲检测属于 公共协作的控制信息, 根据控制信息中的资源分配信息获取待协作的业务 信息, 并按照控制信息中的调制方式对待协作的业务信息进行解调。
然后, 如图 4中虚直线的右边部分所示, eNB、 RN1和 RN2对 datal进行 相同的信道编码、 CRC校验、 星座调制、 资源分配、 映射等处理后发射; eNB、 RN1和 RN2对 data2进行相同的信道编码、 CRC校验、 星座调制、 资源 分配、 映射等处理后发射; 同时以 UE1-ID和 UE2-ID分别标识 UE1和 UE2的 控制信息并发射。 UE1和 UE2分别利用 UE1-ID、 UE2-ID盲检测属于自身的 控制信息, 根据控制信息中的资源分配信息获取自身待协作的业务信息, 并按照控制信息中的调制方式对自身的业务信息进行解调。
该实例保证了后向兼容性(兼容旧版本的用户 ), 而且采用公共信息形 式进行协作, 节省了基站到中继节点链路的开销, 降低了用户侧的误码率 或误块率, 提高了整个系统的吞吐量。
图 5为本发明实施例三中 eNB与 RN之间结合特有信息形式和公共信 息形式协作的示意图, 假设通过定位获得, UE1 ( UE2 )仅在 eNB和 RN1 ( RN2 ) 的覆盖范围内, 并且需要采用协作方式进行发射, 那么, eNB 和 RN1之间, 以及 eNB和 RN2之间以特有信息形式进行协作; 假设 UE3和 UE4都分别仅在 RN3和 RN4的覆盖范围内,并且需要采用协作方式进行发 射, 那么, eNB和 RN3之间, 以及 eNB和 RN4之间以公共信息形式进行 协作。 首先, 如图 5中虚直线的左边部分所示, eNB对 datal和 data2分别进行信 道编码、 CRC校验、星座调制、资源分配、映射等处理后发射,同时以 RN1-ID 和 RN2-ID分别标识 RN1和 RN2的控制信息并发射; eNB将 data3和 data4—起 进行信道编码、 CRC校验、 星座调制、 资源分配、 映射等处理后发射, 同 时以 RC-ID标识 RN 1和 RN2的控制信息并发射。 RN 1和 RN2分别利用 RN1-ID, RN2-ID盲检测属于自身的控制信息, 根据控制信息中的资源分配 信息获取自身待协作的业务信息, 并按照控制信息中的调制方式对自身的 业务信息进行解调; RN3和 RN4分别利用 RC-ID盲检测属于公共协作的控制 信息, 根据控制信息中的资源分配信息获取待协作的业务信息, 并按照控 制信息中的调制方式对待协作的业务信息进行解调。
然后, 如图 5中虚直线的右边部分所示, eNB和 RN1对 datal进行相同的 信道编码、 CRC校验、 星座调制、 资源分配、 映射等处理后发射; eNB和 RN2对 data2进行相同的信道编码、 CRC校验、 星座调制、 资源分配、 映射 等处理后发射; 同时以 UE1-ID和 UE2-ID分别标识 UE1和 UE2的控制信息并 发射。 RN3和 RN4对 data3进行相同的信道编码、 CRC校验、 星座调制、 资 源分配、映射等处理后发射; RN3和 RN4对 data4进行相同的信道编码、 CRC 校验、 星座调制、 资源分配、 映射等处理后发射; 同时以 UE3-ID和 UE4-ID 分别标识 UE3和 UE4的控制信息并发射。 UE1、 UE2、 UE3和 UE4分别利用 UE1-ID、 UE2-ID、 UE3-ID和 UE4-ID盲检测属于自身的控制信息, 根据控制 信息中的资源分配信息获取自身待协作的业务信息, 并按照控制信息中的 调制方式对自身的业务信息进行解调。
本实施例三保证了后向兼容性(兼容旧版本的用户), 而且, 采用特有 信息形式进行协作, 降低了用户侧的误码率或误块率, 提高了整个系统的 吞吐量; 采用公共信息形式进行协作, 节省了基站到中继节点链路的开销, 降低了用户侧的误码率或误块率, 提高了整个系统的吞吐量。 以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围, 凡在本发明的精神和原则之内所作的任何修改、 等同替换和改进 等, 均应包含在本发明的保护范围之内。

Claims

权利要求书
1、 一种实现中继节点协作的方法, 其特征在于, 该方法包括: 基站根据预先设置的协作条件选择协作方式, 当协作条件表明基站与 中继节点间为点对点时, 基站与中继节点之间采用特有信息方式进行协作; 当协作条件表明基站与中继节点间为点对多点时, 基站与中继节点之 间采用公共信息方式进行协作。
2、 根据权利要求 1所述的方法, 其特征在于, 所述协作条件为: 用户 终端是否能够正确获取基站到用户链路, 以及中继节点到用户链路的信道 质量;
所述选择协作方式的方法为: 如果用户终端能够正确获取所述基站到 用户链路, 以及所述中继节点到用户链路的信道质量, 则协作条件表明基 站与中继节点间为点对点;
如果用户终端不能正确获取所述基站到用户链路, 以及所述中继节点 到用户链路的信道质量, 则协作条件表明基站与中继节点间为点对多点。
3、 根据权利要求 1所述的方法, 其特征在于, 所述协作条件为: 用户 终端是否仅在基站和某个中继节点覆盖范围内;
所述选择协作方式的方法为: 如果用户终端仅在所述基站和某个中继 节点覆盖范围内, 则所述协作条件表明基站与中继节点间为点对点;
如果用户终端在所述基站和多个中继节点覆盖范围内, 或者用户终端 仅在所述多个中继节点覆盖范围内时, 所述协作条件表明基站与中继节点 间为点对多点。
4、 根据权利要求 2或 3所述的方法, 其特征在于, 所述基站与中继节 点之间采用特有信息方式进行协作具体包括:
所述基站对各中继节点的业务信息采用独立编码后发射, 基站以不同 的中继节点的标识 RN-ID来标识各中继节点的控制信息并发射, 每个中继 节点仅转发属于自身的待协作的数据。
5、 根据权利要求 4所述的方法, 其特征在于, 所述独立编码的方法为: 所述基站分别对各中继节点的业务信息进行信道编码、 CRC校验、 星座调 制、 映射处理;
所述控制信息至少包括: 表明业务信息所属资源块的资源分配信息、 调制方式;
所述中继节点仅转发属于自身的待协作的数据的方法包括:
所述中继节点利用 RN-ID盲检测属于自身的控制信息, 根据所述控制 信息中的资源分配信息获取待协作的业务信息, 并按照控制信息中的调制 方式对业务信息进行解调;
所述基站对各中继节点的业务信息分别编码后发射, 同时以不同的用 户终端的标识 UE-ID分别标识各用户终端的控制信息并发射, 各中继节点 对属于自身的业务信息进行与基站相同的编码后发射;
所述用户终端分别利用各自的 UE-ID盲检测属于自身的控制信息, 根 据控制信息中的资源分配信息获取自身待协作的业务信息, 并按照控制信 息中的调制方式对自身的业务信息进行解调。
6、 根据权利要求 2或 3所述的方法, 其特征在于, 所述基站与中继节 点之间采用公共信息方式进行协作具体包括:
所述基站对各中继节点的业务信息采用联合编码后发射, 基站以相同 的中继节点的标识 RC-ID标识各中继节点的控制信息并发射, 每个中继节 点转发所有待协作的数据。
7、根据权利要求 6所述的方法, 其特征在于, 所述联合编码的方法为: 所述基站将各中继节点的业务信息一起进行信道编码、 CRC校验、 星座调 制、 资源分配、 映射处理;
所述控制信息至少包括: 表明业务信息所属资源块的资源分配信息、 调制方式;
所述中继节点转发所有待协作的数据的方法包括:
所述中继节点利用 RC-ID盲检测控制信息, 根据控制信息中的资源分 配信息获取待协作的业务信息, 并按照控制信息中的调制方式对业务信息 进行解调;
所述基站对各中继节点的业务信息分别编码后发射, 同时以不同的 UE-ID 分别标识各用户终端的控制信息并发射, 每个中继节点对各中继节 点的业务信息分别进行与基站相同的编码后发射;
所述用户终端分别利用各自的 UE-ID盲检测属于自身的控制信息, 根 据控制信息中的资源分配信息获取自身待协作的业务信息, 并按照控制信 息中的调制方式对自身的业务信息进行解调。
8、 根据权利要求 6所述的方法, 其特征在于, 所述中继节点为两个或 两个以上, 在所述用户终端仅在多个中继节点覆盖范围内时, 所述中继节 点之间采用公共信息方式进行协作;
所述中继节点转发所有待协作的数据的方法包括:
所述中继节点利用 RC-ID盲检测控制信息, 根据控制信息中的资源分 配信息获取待协作的业务信息, 并按照控制信息中的调制方式对业务信息 进行解调;
每个中继节点对各中继节点的业务信息分别进行相同的编码后发射, 同时以不同的 UE-ID分别标识各用户终端的控制信息并发射;
所述用户终端分别利用各自的 UE-ID盲检测属于自身的控制信息, 根 据控制信息中的资源分配信息获取自身待协作的业务信息, 并按照控制信 息中的调制方式对自身的业务信息进行解调。
9、 根据权利要求 7所述的方法, 其特征在于, 所述不同中继站对控制 信息的盲检测不限定先后顺序。
10、 一种实现中继节点协作的系统, 其特征在于, 该系统包括基站, 中继节点, 其中,
基站, 用于根据预先设置的协作条件选择协作方式, 当协作条件表明 基站与中继节点间为点对点时, 向中继节点发送特有信息方式通知; 当协 作条件表明基站与中继节点间为点对多点时, 向中继节点发送公共信息方 式通知;
中继节点, 用于根据来自基站的通知, 当接收到特有信息方式通知时, 基站与中继节点之间采用特有信息方式进行协作; 当接收到公共信息方式 通知时, 基站与中继节点之间采用公共信息方式进行协作。
11、 根据权利要求 10所述的系统, 其特征在于, 所述中继节点为两个 或两个以上时, 所述中继节点在接收到公共信息方式通知时, 各中继节点 之间采用公共信息方式进行协作。
12、 根据权利要求 10所述的系统, 其特征在于, 所述基站包括协作条 件设置单元、 选择单元和发送单元, 其中,
协作条件设置单元, 用于设置协作条件;
选择单元, 用于根据预先设置的协作条件选择协作方式, 当协作条件 表明基站与中继节点间为点对点时, 向中继节点发送特有信息方式通知; 当协作条件表明基站与中继节点间为点对多点时, 向中继节点发送公共信 息方式通知;
发送单元, 用于按照选择单元的选择结果向中继节点发送业务信息和 控制信息。
13、 根据权利要求 12所述的系统, 其特征在于, 当所述协作条件设置 单元设置的协作条件为: 用户终端是否能够正确获取基站到用户链路, 以 及中继节点到用户链路的信道质量时;
所述选择单元用于, 如果用户终端能够正确获取所述基站到用户链路, 以及所述中继节点到用户链路的信道质量, 则协作条件表明基站与中继节 点间为点对点, 向中继节点发送特有信息方式通知;
如果用户终端不能正确获取所述基站到用户链路, 以及所述中继节点 到用户链路的信道质量, 则协作条件表明基站与中继节点间为点对多点, 向中继节点发送公共信息方式通知。
14、 根据权利要求 12所述的系统, 其特征在于, 当所述协作条件设置 单元设置的协作条件为: 用户终端是否仅在基站和某个中继节点覆盖范围 内;
所述选择单元用于, 如果用户终端仅在所述基站和某个中继节点覆盖 范围内, 则所述协作条件表明基站与中继节点间为点对点, 向中继节点发 送特有信息方式通知;
如果用户终端在所述基站和多个中继节点覆盖范围内, 或者用户终端 仅在所述多个中继节点覆盖范围内时, 所述协作条件表明基站与中继节点 间为点对多点, 向中继节点发送公共信息方式通知。
15、 根据权利要求 13或 14的系统, 其特征在于, 当所述基站与中继 节点之间采用特有信息方式进行协作时,
所述发送单元, 用于对各中继节点的业务信息采用独立编码后发射, 以不同的中继节点的标识 RN-ID标识各中继节点的控制信息并发射。
16、 根据权利要求 13或 14的系统, 其特征在于, 当所述基站与中继 节点之间采用公共信息方式进行协作时,
所述发送单元, 用于对各中继节点的业务信息采用联合编码后发射, 以相同的中继节点的标识 RC-ID标识各中继节点的控制信息并发射。
17、 根据权利要求 12所述的系统, 其特征在于, 所述中继节点包括第 一协作处理单元和第二协作处理单元;
当所述基站与中继节点之间采用特有信息方式进行协作时, 所述第一 协作处理单元, 用于仅转发属于自身的待协作的数据;
当所述基站与中继节点之间采用公共信息方式进行协作时, 所述第二 协作处理单元, 用于转发所有待协作的数据。
18、 根据权利要求 17所述的系统, 其特征在于, 所述第一协作处理单 元具体用于, 利用 RN-ID盲检测属于自身的控制信息, 根据所述控制信息 中的资源分配信息获取待协作的业务信息, 并按照控制信息中的调制方式 对业务信息进行解调。
19、 根据权利要求 17所述的系统, 其特征在于, 所述第二协作处理单 元具体用于, 利用 RC-ID盲检测控制信息, 根据控制信息中的资源分配信 息获取待协作的业务信息, 并按照控制信息中的调制方式对业务信息进行 解调。
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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102209308B (zh) * 2010-03-30 2015-12-02 中国移动通信集团公司 一种控制信息的传输方法及其装置
US10455484B2 (en) * 2017-02-28 2019-10-22 Qualcomm Incorporated Methods and systems for access point clustering

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1901400A (zh) * 2005-07-04 2007-01-24 三星电子株式会社 用于无线通信系统的合作中继传输方法
CN1902868A (zh) * 2003-12-30 2007-01-24 艾利森电话股份有限公司 用于使用协作中继的无线通信网络的方法和系统
CN101394665A (zh) * 2008-11-10 2009-03-25 哈尔滨工业大学 蜂窝系统协同通信中高速移动用户中继节点的选择方法
WO2009047660A1 (en) * 2007-10-09 2009-04-16 Nokia Corporation Cooperative relay system enabling simultaneous broadcast-unicast operation with efficient automatic repeat request functionality

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7660363B2 (en) * 2005-08-22 2010-02-09 Nec Laboratories America, Inc. Minimum error rate lattice space time codes for wireless communication
CN101170351B (zh) * 2006-10-23 2012-07-04 株式会社Ntt都科摩 一种数据传输方法
CN101175010B (zh) * 2006-10-30 2012-05-23 北京三星通信技术研究有限公司 信息非均等编码系统中多中继站协作的方法和装置
CN101282199B (zh) * 2008-04-14 2010-11-10 北京邮电大学 用于多中继协作通信的中继策略的自适应选择方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1902868A (zh) * 2003-12-30 2007-01-24 艾利森电话股份有限公司 用于使用协作中继的无线通信网络的方法和系统
CN1901400A (zh) * 2005-07-04 2007-01-24 三星电子株式会社 用于无线通信系统的合作中继传输方法
WO2009047660A1 (en) * 2007-10-09 2009-04-16 Nokia Corporation Cooperative relay system enabling simultaneous broadcast-unicast operation with efficient automatic repeat request functionality
CN101394665A (zh) * 2008-11-10 2009-03-25 哈尔滨工业大学 蜂窝系统协同通信中高速移动用户中继节点的选择方法

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