WO2010085918A1 - Method, equipment and system for auto-configuring serving cell of relay node - Google Patents

Abstract

A method, equipment and system for auto-configuring the serving cell of a relay node are involved in the invention embodiment. The method includes: selecting a target cell; sending a reselection message to a current serving cell； receiving a reselection confirming message that the current serving cell executes reselection coordination with the target cell according to the reselection message and then sends；the reselection confirming message containing the judging result that the target cell judges whether to allow the relay node to reselect the target cell or not. The method, equipment and system for auto-configuring the serving cell of a relay node provided by the invention embodiment solves effectively ICI problem in LTE_A system comprising the relay node.

Description

 Method, device and system for automatically configuring a serving cell of a relay node The present application claims to be submitted to the Chinese Patent Office on February 2, 2009, and the application number is 200910077889. 2. The invention is entitled "Automatically configuring a serving cell of a relay node" The priority of the Chinese Patent Application, the entire disclosure of which is incorporated herein by reference. TECHNICAL FIELD The present invention relates to mobile communication technologies, and more particularly to a method, apparatus and system for automatically configuring a serving cell of a relay node. Background Art In a wireless communication system, a base station wirelessly transmits an electromagnetic wave signal to a mobile terminal for communication. Since the electromagnetic wave signal is affected by factors such as path attenuation, building occlusion, and environment during transmission, the intensity of electromagnetic wave signals in some areas is weak, and the communication quality of mobile terminals located in these areas is degraded. Moreover, as the industry's demand for broadband communications and wireless bandwidth grows, higher and higher carrier frequencies are being used in new protocols and systems. However, since the attenuation of the electromagnetic wave signal during transmission increases with the increase of the frequency, the high carrier frequency is inevitably faced with the problem of high attenuation, thereby further limiting the coverage of the base station. In order to solve the coverage problem of the base station, it is generally required to use a wireless relay station to enhance the electromagnetic wave signal between the base station and the mobile terminal. The wireless relay station communicates with the base station only through the wireless link, and does not need wired transmission. Therefore, the method has the advantages of low cost and simple deployment.

 Existing cellular mobile communication systems, such as: Third generation mobile communication systems, provide data rates that vary greatly between cell center and cell edge, affecting not only the capacity of the entire system, but also the user's location at different locations. The quality of service has fluctuated greatly. Inter-cell Interference (ICI) is an inherent problem in cellular mobile communication systems. The traditional solution is to use frequency reuse. There are only a few specific choices for multiplexing coefficients, such as 1, 3, and 7. Wait. A multiplexing factor of 1 means that neighboring cells use the same frequency resource, and the interference at the cell edge is very serious. Higher multiplexing coefficients, such as 3 or 7, can effectively suppress ICI, but the spectral efficiency will be reduced to 1/3 or 1/7. In order to improve the spectrum utilization of radio resources, under normal circumstances, the frequency reuse factor in the system is 1, to ensure that each cell can use all frequency bands to transmit data. In this case, especially for cell edge users, small-area interference becomes a major factor affecting the performance of future communication systems. If two neighboring cells use the same spectrum resource at their junction, a strong ICI is generated.

The ICI suppression technologies currently under study mainly include interference randomization, interference coordination, and interference cancellation. Interference Randomization does not reduce the energy of interference, but it can randomize the interference into "white noise", thereby suppressing the harm of ICI, so it is also called "interference whitening". Interference coordination includes "soft frequency reuse" and "partial frequency reuse". This method distinguishes users at the center and edge of the cell, and allocates different frequency resources and power resources. The interference cancellation technique is derived from a multi-user detection technique that demodulates, decodes, and then subtracts the ICI from the cell. Interference cancellation has no limitation on the frequency resources at the edge of the cell, and the cell edge spectral efficiency is 1 and the total spectral efficiency is 1. Other technologies, such as M 0, smart antennas, partial power control, etc., can also be used for ICI suppression.

 In the prior art, the Long Term Evalutation_advance (hereinafter referred to as LTE_A) system introduces a relay node, which makes the ICI problem more complicated, and there is interference between the relay node and the relay node between the cells. Interference between the relay node and the user equipment (User Equipment, hereinafter referred to as UE), there is also interference between the UE served by the relay node and other UEs, and the information of the relay node and other network nodes must be It can be completed through its current serving cell, and the prior art does not solve the solution of the ICI problem in the LTE_A system with the relay node. Summary of the invention

 The present invention provides a method, apparatus, and system for automatically configuring a serving cell of a relay node to effectively solve an ICI problem in a LTE_A system having a relay node.

 An aspect of the present invention provides a method for automatically configuring a serving cell of a relay node, including:

 Selecting a target cell, and sending a reselection message to the current serving cell; and receiving a reselection confirmation message sent by the current serving cell according to the reselection message and performing reselection coordination with the target cell, where the reselection confirmation message is And including a determination result of the target cell determining whether to allow the relay node to reselect to the target cell.

 Another aspect of the present invention provides a method for automatically configuring a serving cell of a relay node, including: receiving a reselection message sent by a relay node; and performing reselection coordination with a target cell according to the reselection message, The target cell sends a reselection request message, where the reselection request message includes reselection coordination parameter information, and sends a reselection confirmation message to the relay node, where the reselection confirmation message includes the target cell according to the The reselection coordination parameter information determines whether the relay node is allowed to reselect the determination result to the target cell.

 A still further aspect of the present invention provides a method for automatically configuring a serving cell of a relay node, including: receiving a reselection request message sent by a current serving cell of a relay node, where the reselection request message includes reselection coordination parameter information Determining whether the relay node is allowed to reselect to the target cell according to the reselection coordination parameter information carried in the reselection request message; and sending a reselection response message to the current serving cell, where the reselection The response message includes a determination result of whether the relay node is allowed to reselect to the target cell.

Another aspect of the present invention provides an apparatus for automatically configuring a serving cell of a relay node, including: a selection module, The first sending module and the first accepting module. among them:

 The selecting module is configured to select a target cell; the first sending module is configured to send a reselection message to the current serving cell after the selecting module selects the target cell; and the first receiving module is configured to receive the current serving cell according to the weight And a reselection confirmation message sent after the reselection coordination of the message with the target cell, where the reselection confirmation message includes a determination result that the target cell determines whether to allow the relay node to reselect to the target cell.

 A still further aspect of the present invention provides an apparatus for automatically configuring a serving cell of a relay node, including: a second receiving module and a second sending module. among them:

 The second receiving module is configured to receive a reselection message sent by the relay node, where the second sending module is configured to perform reselection coordination with the target cell according to the reselection message received by the second receiving module, to the The target cell sends a reselection request message, and sends a reselection confirmation message to the relay node, where the reselection request message includes reselection coordination parameter information, where the reselection confirmation message includes the target cell according to the The reselection coordination parameter information determines whether the relay node is allowed to reselect the determination result to the target cell.

 Another aspect of the present invention provides an apparatus for automatically configuring a serving cell of a relay node, including: a third receiving module, a fourth determining module, and a third sending module. among them:

 The third receiving module is configured to receive a reselection request message sent by the current serving cell of the relay node, where the reselection request message includes reselection coordination parameter information; and the fourth determining module is configured to carry according to the reselection request message Deselecting the coordination parameter information, determining whether the relay node is allowed to reselect to the target cell; the third sending module is configured to send a reselection response message to the current serving cell, where the reselection response message includes The relay node is allowed to reselect the judgment result to the target cell.

 Yet another aspect of the present invention provides a system for automatically configuring a serving cell of a relay node, including a relay node, a current serving cell node, and a target cell node. among them:

 The relay node is configured to select the target cell node, and send a reselection message to the current serving cell node, and receive the current serving cell node to perform reselection coordination with the target cell node according to the reselection message. a reselection confirmation message sent afterwards;

 The current serving cell node is configured to receive a reselection message sent by the relay node, and according to the reselection message, if reselection coordination with the target cell node is needed, send a reselection request to the target cell node. a message, the reselection request message includes reselection coordination parameter information, and the reselection confirmation message is sent to the relay node, where the reselection confirmation message includes the target cell node according to the reselection coordination parameter Determining, by the information, whether the relay node is allowed to reselect the judgment result of the target cell node;

The target cell node is configured to receive a reselection sent by the current serving cell node of the relay node. Determining, according to the reselection coordination parameter information carried in the reselection request message, determining whether the relay node is allowed to reselect to the target cell node, and sending a reselection response message to the current serving cell node. And the reselection response message includes a determination result of whether the relay node is allowed to reselect to the target cell node.

 The method, device and system for automatically configuring a serving cell of a relay node provided by the present invention, by reselecting a serving cell of a relay node, interference between a relay node and a relay node, interference between a relay node and a UE, The interference between the UE and the UE can be reduced, thereby effectively solving the ICI problem in the LTE_A system with the relay node. DRAWINGS

1 is a flowchart of a first embodiment of a method for automatically configuring a serving cell of a relay node according to the present invention; FIG. 2 is a flowchart of a second embodiment of a method for automatically configuring a serving cell of a relay node according to the present invention; FIG. 4 is a flowchart of a method for automatically configuring a serving cell of a relay node according to a third embodiment of the present invention; FIG. 4 is a flowchart of a method for automatically configuring a serving cell of a relay node according to the present invention; FIG. 6 is a flowchart of a sixth embodiment of a method for automatically configuring a serving cell of a relay node according to the present invention; FIG. 7 is a flowchart of automatically configuring a relay node according to the present invention; FIG. 8 is a flowchart of an eighth embodiment of a method for automatically configuring a serving cell of a relay node according to the present invention; FIG. 9 is a device for automatically configuring a serving cell of a relay node according to the present invention. FIG. 10 is a schematic structural diagram of a second embodiment of an apparatus for automatically configuring a serving cell of a relay node according to the present invention; FIG. 11 is an automatic configuration relay of the present invention. FIG. 12 is a schematic structural diagram of a fourth embodiment of a device for automatically configuring a serving cell of a relay node according to the present invention; FIG. 13 is a schematic diagram of a serving cell for automatically configuring a relay node according to the present invention; FIG. 14 is a schematic structural diagram of a sixth embodiment of an apparatus for automatically configuring a serving cell of a relay node according to the present invention; FIG. 15 is a seventh embodiment of an apparatus for automatically configuring a serving cell of a relay node according to the present invention; FIG. 16 is a schematic structural diagram of an eighth embodiment of an apparatus for automatically configuring a serving cell of a relay node according to the present invention; FIG. 17 is a schematic diagram of a system embodiment for automatically configuring a serving cell of a relay node according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. As shown in FIG. 1 , it is a flowchart of a first embodiment of a method for automatically configuring a serving cell of a relay node according to the present invention. In this embodiment, the relay node may be an edge relay node located in an edge area of the current serving cell, and the serving cell of the edge relay node is not fixed. This embodiment may include the following steps: Step 11: The edge relay node selects a target cell, and sends a reselection message to the current serving cell. Specifically, the edge relay node may select the target cell according to the trigger. The reason for the trigger may include a periodic trigger or a timing trigger. In addition, the edge relay node may also select the target cell under the trigger of the current serving cell. The edge re-selection message may include the edge relay node identifier and a current serving cell identifier. Therefore, the edge relay node may send a reselection message to the current serving cell according to the current serving cell identity, and the current serving cell may know which relay node sends the reselection message according to the edge relay node identifier. Step 12: The edge relay node receives a reselection confirmation message sent by the current serving cell after reselection coordination with the target cell according to the reselection message, where the reselection confirmation message includes the target cell determining whether to allow the edge relay node to reselect to the target. The judgment result of the cell. Specifically, if the result of the determination is that the edge relay node is allowed to reselect to the target cell, the edge relay node selects the target cell as the new serving cell; if the judgment result is that the edge relay node is not allowed to reselect to the target cell, The edge relay node reselects the new target cell. In addition, the reselection confirmation message may further include a target cell identifier and an edge relay node identifier. Therefore, the current serving cell sends a reselection confirmation message to the edge relay node according to the edge relay node identifier, and the edge relay node can determine, according to the target cell identifier, which target cell is made. In this embodiment, the edge relay node selects the target cell, and then receives the reselection confirmation message sent by the serving cell, where the reselection confirmation message includes the determination result of whether the target cell allows the edge relay node to reselect to the target cell, and the edge After the serving cell reselection of the relay node, the interference between the edge relay node and the edge relay node, the interference between the edge relay node and the UE, and the interference between the UE and the UE can be reduced, thereby effectively solving ICI problem in the LTE_A system of the relay node. As shown in FIG. 2, it is a flowchart of a second embodiment of a method for automatically configuring a serving cell of a relay node according to the present invention. In this embodiment, on the basis of the technical solution shown in FIG. 1 , when the edge relay node selects the target cell under the trigger of the current serving cell, the step 11 may further include the following steps: Step 20: The edge relay node receives the current A reselection indication message sent by the serving cell. The information that the edge relay node receives the reselection indication message sent by the current serving cell may specifically include the following two situations: 1) When the current serving cell needs to perform inter-cell interference coordination, the edge relay node needs to reselect the new serving cell, thereby reducing the interference, and the current serving cell sends a reselection indication message to the edge relay node.

2) When the neighboring cell of the current serving cell is turned on or awake, because the wireless environment changes, whether the edge relay node continues to provide services by the current serving cell needs to be re-coordinated. Therefore, the current serving cell first receives the opening indication message sent by the neighboring cell, and then the current serving cell learns that the neighboring cell is enabled or awake according to the opening indication message, and then sends a reselection indication message to the edge relay node, where The reselection indication message includes information that the neighboring cell is turned on. In order to select a target cell, step 11 may specifically include the following steps: Step 21: The edge relay node determines whether the current serving cell is an initial serving cell. If the current serving cell is the initial serving cell, go to Step 22. If the current serving cell is not the initial serving cell, go to Step 23. The initial serving cell is a cell to which the edge relay node belongs when the operator deploys the edge relay node. Step 22: The edge relay node selects the target cell according to the measurement result of the UE and/or the UE it serves, and performs step 24. The measurement result of the UE served by the edge relay node and/or the edge relay node may specifically include: the current serving cell and the neighboring cell of the current serving cell measured by the edge relay node according to the UE and/or the UE it serves The received signal quality, the interference of the UE to the edge relay node served by the edge relay node measured by the edge relay node, and the link of the edge relay node measured by the UE served by the edge relay node to the UE are subjected to One or more of the disturbances. If there is one neighboring cell of the current serving cell, the edge relay node selects the neighboring cell as the target cell; if there are multiple neighboring cells of the current serving cell, the edge relay node uses the multiple neighboring cells as candidates The target cell selects one cell from the candidate target cells as the target cell according to the foregoing measurement result. At this time, on the basis of the technical solution shown in FIG. 1 , the reselection message sent by the edge relay node to the current serving cell in step 11 may further include the target cell identifier. Specifically, the edge relay node may sort the neighboring cells according to the cell reselection criterion, and then select the target cell according to the uplink measurement result, so that the selected target cell is reduced as much as possible while satisfying the cell reselection criterion. Interference with the current serving cell. For example: 3 neighboring cells are sorted according to the cell reselection criterion, and the neighboring cell 3 is the optimal candidate target cell, the neighboring cell is the first, and the neighboring cell 2 is the third. If the interference condition of the neighboring cell 3 and the current serving cell is the most serious, the neighboring cell 3 may be selected as the target cell; The interference situation between the area 1 and the current serving cell is the most serious, then the neighboring cell 1 can be selected as the target cell, that is, a compromise manner can be adopted according to the specific interference condition. Step 23: The edge relay node selects the initial serving cell as the target cell, and performs step 25. Step 25: The edge relay node sends a reselection message to the current serving cell, where the reselection message includes a determination result that needs to be reselected with the target cell. Step 24: The edge relay node determines whether it needs to perform reselection coordination with the target cell according to the measurement result of the UE and the UE it serves, and if it needs to perform reselection coordination with the target cell, perform step 26, if not required The cell performs reselection coordination, and steps 22 and 27 are performed respectively. Specifically, for example, if the signal quality measured by the UE of the overlapping area of the current serving cell and the target cell is stronger than the signal quality measured by the edge relay node of the overlapping area to the target cell, the UE does not select the edge. The relay node provides the service, but selects the target cell to directly provide the service. At this time, the edge relay node does not play its role well after selecting the target cell. In this case, there is no need to reselect the target cell. coordination. On the other hand, if the signal quality of the target cell measured by the UE in the overlapping area of the current serving cell and the target cell is weaker than the signal quality measured by the edge relay node of the overlapping area to the target cell, reselection coordination with the target cell is required. . It should be noted that the above determination manner is only one embodiment of the present invention, and the present invention is not limited to this one. Step 26: The edge relay node sends a reselection message to the current serving cell for the reselection indication message, where the reselection message includes a determination result that needs to be reselected with the target cell. Step 27: The edge relay node sends a reselection message to the current serving cell for the reselection indication message, where the reselection message includes a determination result that does not need to be reselected with the target cell. Specifically, since the communication between the edge relay node and other network nodes must pass through the current serving cell, the edge relay node sends a reselection message to the current serving cell, and then the current serving cell processes the result according to the judgment result carried in the reselection message. . After performing step 26 or step 27, proceed to step 12. In this embodiment, when the result of the determination is that reselection coordination with the target cell is required, the current serving cell sends a reselection request message to the target cell, and the target cell determines whether the edge relay node is allowed to reselect to the target cell. Allowing the edge relay node to reselect to the target cell, the edge relay node reselects the target cell as its current serving cell; if the edge relay node is not allowed to reselect to the target cell, the edge relay node reselects the target Community. When the result of the judgment is that reselection coordination with the target cell is not required, it indicates that the selected target cell is inappropriate, and the edge relay node reselects the target cell. In this embodiment, after the serving cell reselection of the edge relay node, the interference between the edge relay node and the edge relay node, the interference between the edge relay node and the UE, and the interference between the UE and the UE are both It can reduce, and can reduce the interference of the current serving cell and its neighboring cells, thereby effectively solving the ICI problem in the LTE_A system with the relay node. In addition, the edge relay node determines whether it needs to coordinate with the target cell, and the edge relay node only reports the judgment result to the current serving cell, which saves the signaling overhead between the edge relay node and the current serving cell. In addition, if the current serving cell of the edge relay node is not the initial serving cell, the initial serving cell is selected as the target cell, and the edge relay node and the UE it serves are not required to perform measurement, which saves the time required for measurement. As shown in FIG. 3, it is a flowchart of a third embodiment of a method for automatically configuring a serving cell of a relay node according to the present invention. On the basis of the technical solution shown in FIG. 1, an edge relay node selects under the trigger of a current serving cell. The target cell may further include the following steps: Step 30: The edge relay node receives the reselection indication message sent by the current serving cell, where the edge relay node receives the reselection indication message sent by the current serving cell, which may specifically include two For details, refer to the two cases in which the edge relay node receives the reselection indication message sent by the current serving cell in step 20 of the previous embodiment, and details are not described herein again. On the basis of the technical solution shown in FIG. 1 , in order to select a target cell, step 11 may specifically include the following steps: Step 31: The edge relay node determines whether the current serving cell is an initial serving cell. If the current serving cell is the initial serving cell, go to Step 32. If the current serving cell is not the initial serving cell, go to Step 33. Step 32: The edge relay node selects the target cell according to the measurement result of the UE and/or the UE it serves, and performs step 34. The measurement result may include the received signal quality of the current serving cell and the neighboring cell of the current serving cell measured by the edge relay node and/or the UE it serves, and the UE served by the edge relay node measured by the edge relay node to The interference received by the link of the edge relay node, and one or more of the interference received by the edge relay node of the UE served by the edge relay node to the link of the UE. If there is one neighboring cell of the current serving cell, the edge relay node selects the neighboring cell as the target cell; if there are multiple neighboring cells of the current serving cell, the edge relay node uses the multiple neighboring cells as candidates The target cell selects one cell from the candidate target cells as the target cell according to the measurement result. At this time, in Figure 1 On the basis of the illustrated technical solution, the reselection message sent by the edge relay node to the current serving cell in step 11 may further include the target cell identifier of the target cell. Step 33: The edge relay node selects the initial serving cell as the target cell, and performs step 35. Step 35: The edge relay node sends a reselection message to the current serving cell, where the reselection message includes a determination result that needs to be reselected with the target cell. The reselection message may further include the edge relay node identifier and the current serving cell identifier, and the edge relay node sends a reselection message to the current serving cell according to the current serving cell identifier, and the current serving cell may be informed according to the edge relay node identifier. Which relay node sends a reselection message. Step 34: The edge relay node processes the measurement result of the UE and/or the UE it serves, and obtains the processed measurement result, and performs step 36. Specifically, since there are usually multiple UEs served by the edge relay node, there are also multiple measurement results of the UE. Since the edge relay node can obtain the same conclusion according to the measurement results of some UEs, several processed measurement results can be obtained from the measurement results of all or part of the UEs, and the edge relay node only needs to report these processes to the current serving cell. After the measurement results, it is not necessary to report all the measurement results, which saves the signaling overhead between the edge relay node and the current serving cell. For example, according to the measurement result of the first part of the UE, the interference state of the neighboring cell 3 and the current serving cell is the most serious, and the interference level has reached 5 levels; according to the measurement result of the second part of the UE, the neighboring cell 1 and the current serving cell are obtained. The interference condition is second, and the interference level reaches level 4; according to the measurement result of the third part UE, the interference state of the neighboring cell 2 and the current serving cell is third, and the interference level reaches level 2. Then, the edge relay node only needs to report to the current serving cell that the interference level of the neighboring cell 3 and the current serving cell is level 5, and the interference level of the neighboring cell 1 and the current serving cell is level 4, the neighboring cell 2 and the current service. The interference level of the cell is level 2. Step 36: The edge relay node sends a reselection message for the reselection indication message to the current serving cell, where the reselection message includes the processed measurement result. After step 36 is performed, proceed to step 12. In this embodiment, after the serving cell reselection of the edge relay node, the interference between the edge relay node and the edge relay node, the interference between the edge relay node and the UE, and the interference between the UE and the UE are both It can reduce, and can reduce the interference of the current serving cell and its neighboring cells, thereby effectively solving the ICI problem in the LTE_A system with edge relay nodes. In addition, the edge relay node only reports the processed measurement result to the current serving cell, and the serving cell determines whether it needs to perform reselection coordination with the target cell, thereby saving the relationship between the edge relay node and the current serving cell. Signaling overhead. In addition, if the current serving cell of the edge relay node is not the initial serving cell, the initial serving cell is selected as the target cell, and the edge relay node and/or the UE it serves are not required to perform measurement, which saves the time required for the measurement. As shown in FIG. 4, it is a flowchart of a fourth embodiment of a method for automatically configuring a serving cell of a relay node according to the present invention. In this embodiment, the relay node is specifically an edge relay node located in an edge area of a current serving cell. And the serving cell of the edge relay node is not fixed. The embodiment may include the following steps: Step 41: The current serving cell receives the reselection message sent by the edge relay node. The reselection message may include an edge relay node identifier and a current serving cell identifier, and the edge relay node sends a reselection message to the current serving cell according to the current serving cell identifier, where the current serving cell learns according to the edge relay node identifier. Following the message sent by the node. Step 42: According to the reselection message, if the reselection coordination with the target cell is required, the current serving cell sends a reselection request message to the target cell, where the reselection request message includes reselection coordination parameter information. The reselection request message may further include a target cell identifier, a current serving cell identifier, and an edge relay node identifier. The current serving cell sends a reselection request message to the target cell according to the target cell identifier, and the target cell learns, according to the current serving cell identity, which cell sends the reselection request message, and the target cell can know which relay node according to the edge relay node identifier. Requesting reselection coordination; Then, the current serving cell receives the reselection response message sent by the target cell, and the reselection response message includes a determination result of the target cell determining whether to allow the edge relay node to reselect to the target cell. Step 43: The current serving cell sends a reselection confirmation message to the edge relay node, where the reselection confirmation message includes a determination result of the target cell determining whether to allow the edge relay node to reselect to the target cell according to the reselection coordination parameter information. If the result of the determination is that the edge relay node is allowed to reselect to the target cell, the edge relay node selects the target cell as its serving cell; if the judgment result is that the edge relay node is not allowed to reselect to the target cell, the edge is in the edge. After the node reselects the target cell, the current serving cell can enter the sleep state after the edge relay node reselects the new serving cell. The reselection confirmation message may further include an edge relay node identifier, a target cell identifier, and a current serving cell identifier. The current serving cell sends a reselection confirmation message to the edge relay node according to the edge relay node identifier, The edge relay node knows which cell sends a reselection confirmation message according to the current serving cell identity, and the edge relay node knows which cell is determined according to the target cell identity. In this embodiment, the current serving cell receives the reselection message returned by the edge relay node, and if reselection coordination with the target cell is required, the current serving cell sends a reselection request message to the target cell, and receives the target returned by the target cell. a reselection response message of the reselection request message, the reselection response message includes a judgment result of whether the edge relay node is allowed to reselect to the target cell, and then sends a reselection confirmation message to the edge relay node, the reselection confirmation message The determination result of the target cell determining whether to allow the edge relay node to reselect to the target cell is included, so that the serving cell completes reselection coordination with the target cell. After the serving cell reselection of the edge relay node, the interference between the edge relay node and the edge relay node, the interference between the edge relay node and the UE, and the interference between the UE and the UE can be reduced; After the relay node reselects to other cells, the current serving cell can enter a sleep state, which can further reduce interference between the current serving cell and its neighboring cells, thereby effectively solving the ICI problem in the LTE_A system with the relay node. As shown in FIG. 5, a flowchart of a fifth embodiment of a method for automatically configuring a serving cell of a relay node according to the present invention is different from the previous embodiment in that the reselection message may include an edge relay node to determine whether The judgment result of reselection coordination with the target cell is required. On the basis of the technical solution shown in FIG. 4, step 42 may further include the following steps: Step 51: The current serving cell obtains an edge relay node carried in the reselection message to determine whether it needs to reselect the target cell. . If the result of the determination is that the reselection coordination with the target cell is required, step 42 is performed; if the result of the determination is that reselection coordination with the target cell is not required, the process ends. Specifically, if the target cell selected by the edge relay node is the initial serving cell, the reselection message includes a determination result that the edge relay node determines that reselection coordination needs to be performed with the target cell. The current serving cell sends a reselection request message to the target cell according to the judgment result. If the target cell selected by the edge relay node is not the initial serving cell, the reselection message includes the edge relay node to determine whether it needs to reselect the target cell. The result of the coordination judgment, the current serving cell obtains the judgment result. In this embodiment, the reselection coordination parameter information may include one or more of an edge relay node's relay capability, performance parameters, location information, interference information, and load information. On the basis of the technical solution shown in FIG. 4, the current serving cell may trigger the edge relay node to reselect the serving cell. The step 41 may further include the following steps: Step 50: The current serving cell sends a reselection indication message to the edge relay node. . Step 41 may be specifically as follows: Step 52: The current serving cell receives a reselection message sent by the edge relay node for the reselection indication message. In the step 50, the current serving cell sends a reselection indication message, which may include two situations. For details, refer to the two cases in which the edge relay node receives the reselection indication message sent by the current serving cell in step 20 of the technical solution shown in FIG. This will not be repeated here. In this embodiment, the current serving cell determines whether it is necessary to perform reselection coordination with the target cell according to whether the edge relay node in the reselection message determines whether it needs to perform reselection coordination with the target cell. And if the reselection coordination is performed with the target cell, the reselection request message is sent to the target cell, and the reselection response message for the reselection request message returned by the target cell is received, where the reselection response message includes whether the edge relay is allowed. The node reselects the result of the determination to the target cell, and sends a reselection confirmation message to the edge relay node, where the reselection confirmation message includes a determination result of the target cell determining whether to allow the edge relay node to reselect the target cell, so that the current The serving cell completes reselection coordination with the target cell. After the serving cell reselection of the edge relay node, the interference between the edge relay node and the edge relay node, the interference between the edge relay node and the UE, and the interference between the UE and the UE can be reduced; After the relay node is reselected to other cells, the current serving cell can enter a sleep state, which can further reduce interference between the current serving cell and its neighboring cells, thereby effectively solving the ICI problem in the LTE_A system with the relay node. In addition, the edge relay node determines whether it is necessary to send a reselection request message to the target cell, and the current serving cell only needs to perform corresponding processing according to the judgment result of the edge relay node, thereby saving the letter between the edge relay node and the current serving cell. Make the cost. As shown in FIG. 6, a flowchart of a sixth embodiment of a method for automatically configuring a serving cell of a relay node according to the present invention is different from the technical solution shown in FIG. 4 in that a re-selection message may include an edge relay node. The measured result of the measurement of the measurement result of the UE and/or the UE it serves. The measurement result includes the received signal quality of the current serving cell and the neighboring cell of the current serving cell measured by the edge relay node and the UE served by the edge relay node and/or the edge relay node, and the edge measured by the edge relay node. The interference received by the UE to the edge relay node served by the relay node, and one or more of the interference received by the edge relay node of the UE served by the edge relay node to the link of the UE. Based on the technical solution shown in FIG. 4, step 42 may further include the following steps: Step 61: The current serving cell determines whether it needs to perform reselection coordination with the target cell according to the processed measurement result carried in the reselection message. If reselection coordination with the target cell is required, go to step 42; otherwise, go to step 62. Step 62: The current serving cell returns a judgment result that does not need to perform reselection coordination with the target cell to the edge relay node. Then, based on the result of the determination, the edge relay node learns that the selected target cell is inappropriate and reselects the target cell. In this embodiment, the reselection coordination parameter information may include one or more of an edge relay node's relay capability, performance parameters, location information, interference information, and load information. On the basis of the technical solution shown in FIG. 4, the current serving cell may trigger the edge relay node to reselect the serving cell. The step 41 may further include the following steps: Step 60: The current serving cell sends a reselection indication message to the edge relay node. . Step 41 may be specifically as follows: Step 63: The current serving cell receives a reselection message sent by the edge relay node for the reselection indication message. The information that the current serving cell sends the reselection indication message in the step 60 may include two situations. For details, refer to the two situations in which the edge relay node receives the reselection indication message sent by the current serving cell in step 20 of the technical solution shown in FIG. 2, I will not repeat them here. In this embodiment, the current serving cell determines whether it needs to perform reselection coordination with the target cell according to the processed measurement result carried in the reselection message, and if it needs to perform reselection coordination with the target cell, send a reselection request to the target cell. And receiving, by the target cell, a reselection response message for the reselection request message, where the reselection response message includes a judgment result of whether the edge relay node is allowed to reselect to the target cell, and then sends the weight to the edge relay node. And selecting a confirmation message, where the reselection response message includes a determination result of the target cell determining whether to allow the edge relay node to reselect to the target cell, so that the current serving cell completes reselection coordination with the target cell. After the serving cell is reselected, interference between the edge relay node and the edge relay node, interference between the edge relay node and the UE, interference between the UE and the UE can be reduced; and the edge relay node is reselected After the other cells are in the sleep state, the current serving cell can enter the sleep state, which can further reduce the interference between the current serving cell and its neighboring cells, thereby effectively solving the ICI problem in the 1^^8 system with the relay node. In addition, it is judged by the current serving cell whether The re-selection request message needs to be sent to the target cell, and the edge relay node only needs to send the processed measurement result to the current serving cell, which saves the signaling overhead between the edge relay node and the current serving cell. As shown in FIG. 7 , it is a flowchart of a method for automatically configuring a serving cell of a relay node according to a seventh embodiment of the present invention. In this embodiment, the relay node is specifically an edge relay node located in an edge area of the current serving cell. And the serving cell of the edge relay node is not fixed. The method in this embodiment may include the following steps: Step 71: The target cell receives a reselection request message sent by the current serving cell of the edge relay node, and the reselection request The message includes reselection coordination parameter information. Step 72: The target cell determines, according to the reselection coordination parameter information carried in the reselection request message, whether the edge relay node is allowed to reselect to the target cell. Step 73: The target cell sends a reselection response message to the current serving cell, where the reselection response message includes a determination result of whether the edge relay node is allowed to reselect to the target cell. Then, the current serving cell sends a reselection confirmation message to the edge relay node, where the reselection confirmation message includes a determination result of whether the edge relay node is allowed to reselect to the target cell. The edge relay node performs processing according to the judgment result. If the judgment result is that the edge relay node is allowed to reselect to the target cell, the edge relay node selects the target cell as its serving cell; if the judgment result is that the edge relay is not allowed When the node performs reselection, the edge relay node reselects the target cell. In addition, the reselection request message may further include a target cell identifier, a current serving cell identifier, and an edge relay node identifier, where the current serving cell sends a reselection request message to the target cell according to the target cell identifier, and the target cell according to the current serving cell identifier It is known which cell sends the reselection request message, and the target cell can know which relay node requests reselection according to the edge relay node identifier. In this embodiment, the target cell determines whether the edge relay node is allowed to reselect to the target cell according to the parameter information of the edge relay node carried in the reselection request message, and feeds the determination result to the current serving cell, thereby completing the target cell and Reselection coordination between current serving cells, interference between edge relay nodes and edge relay nodes, interference between edge relay nodes and UEs, UE and UE after reselection of serving cells of edge relay nodes The interference between the two can be reduced, thereby effectively solving the ICI problem in the LTE_A system with the relay node. As shown in FIG. 8, the flowchart of the eighth embodiment of the method for automatically configuring a serving cell of a relay node according to the present invention is different from the previous embodiment in that the reselection coordination parameter information in step 71 may specifically include Edge relay section One or more of the relay capability, the performance parameter, the location information, the interference information, and the load information of the point. On the basis of the previous embodiment, step 72 may specifically be: Step 81: The target cell is based on the edge relay node. One or more of a relay capability, a performance parameter, location information, interference information, and load information, determining whether the edge relay node is allowed to reselect to the target cell. In this embodiment, the target cell determines whether the edge relay node is allowed according to one or more of the relay capability, the performance parameter, the location information, the interference information, and the load information of the edge relay node carried in the reselection request message. Reselecting to the target cell, and feeding back the judgment result to the current serving cell, thereby completing reselection coordination between the target cell and the current serving cell. After the serving cell reselection of the edge relay node, the interference between the edge relay node and the edge relay node, the interference between the edge relay node and the UE, and the interference between the UE and the UE can be reduced, thereby effectively solving ICI problem in LTE_A system with relay nodes. As shown in FIG. 9, a schematic structural diagram of a first embodiment of a device 9 for automatically configuring a serving cell of a relay node according to the present invention may specifically include a first receiving module 91, a selecting module 92, and a first sending module 93. In this embodiment, the device 9 may be a physical unit or a logic module of a relay node, where the relay node is specifically an edge relay node located in an edge area of a current serving cell, and a serving cell of an edge relay node. It is not fixed. The selecting module 92 is configured to select a target cell. Specifically, the selecting module 92 may select a target cell according to the trigger, where the trigger may include a periodic trigger or a timing trigger. In addition, the selecting module 92 may also be in the current serving cell. Select the target cell under trigger. The first sending module 93 is configured to send a reselection message to the current serving cell after the selecting module 92 selects the target cell. The re-selection message may include the edge relay node identifier and the current serving cell identifier, and the first sending module 93 sends a reselection message to the current serving cell according to the current serving cell identifier, where the current serving cell may be based on the edge relay node identifier. It is known which relay node sends the reselection message. The first receiving module 91 is configured to receive a reselection confirmation message that is sent by the current serving cell after reselection coordination with the target cell according to the reselection message, where the reselection confirmation message includes: determining, by the target cell, whether the edge relay node is allowed to reselect the The judgment result of the target cell. If the result of the determination is that the edge relay node is allowed to reselect to the target cell, the selecting module 92 selects the target cell as a new serving cell; if the result of the determination is that the edge relay node is not allowed to reselect to the target cell, the selecting module 92 Reselect the new target cell. In addition, the reselection confirmation message may further include a target cell identifier and an edge relay node identifier, where the current serving cell sends a reselection confirmation message to the edge relay node according to the edge relay node identifier, and the edge relay node may The target cell identity is informed of which target cell made the determination. In this embodiment, the selection module 92 selects the target cell, and the first sending module 93 sends a reselection message to the current serving cell, and the first receiving module 91 receives the reselection confirmation message sent by the current serving cell, where the reselection confirmation message is included. Whether the target cell allows the edge relay node to reselect the judgment result of the target cell. After the serving cell reselection of the edge relay node, the interference between the edge relay node and the edge relay node, the interference between the edge relay node and the UE, and the interference between the UE and the UE can be reduced, thereby effectively solving ICI problem in LTE_A system with relay nodes. As shown in FIG. 10, it is a schematic structural diagram of a second embodiment of a device for automatically configuring a serving cell of a relay node according to the present invention. On the basis of the structure diagram shown in FIG. 9, the selecting module 92 selects a target under the trigger of the current serving cell. The first receiving module 91 is further configured to receive a reselection indication message sent by the current serving cell. The selecting module 92 is further configured to select the target cell after the first receiving module 91 receives the reselection indication message. The receiving, by the first receiving module 91, the reselection indication message sent by the current serving cell may include the following two situations:

1) When the current serving cell needs to perform inter-cell interference coordination, the selecting module 92 needs to reselect the new serving cell, thereby reducing the interference, and then the current serving cell sends a reselection indication message to the edge relay node. The first receiving module 91 may further receive, after the current serving cell receives the opening indication message sent by the neighboring cell of the current serving cell, the reselection indication message sent by the current serving cell according to the opening indication message. Specifically, when the neighboring cell of the current serving cell is turned on or awake, because the wireless environment changes, whether the edge relay node continues to provide services by the current serving cell needs to be re-coordinated, so the current serving cell first receives its neighboring cell. The sending indication message is sent, and then the current serving cell learns that its neighboring cell is turned on or awake according to the opening indication message, and then sends a reselection indication message to the edge relay node. In order to select a target cell, the selection module 92 may specifically include a first determining subunit 101 and a first selecting subunit 102. The first determining sub-unit 101 is configured to determine whether the current serving cell is an initial serving cell, where the initial serving cell is a cell to which the edge relay node belongs when the operator deploys the edge relay node. The first selection sub-unit 102 is configured to select a target cell according to the measurement result of the edge relay node and/or the UE served by the edge relay node, if the current serving cell is the initial serving cell according to the determination result of the first determining sub-unit 101. If the current serving cell is not the initial serving cell, the initial serving cell is selected as the target cell. The measurement result of the UE served by the edge relay node and/or the edge relay node may specifically include the current serving cell measured by the edge relay node and/or the UE served by the edge relay node, and the neighboring cell of the current serving cell. Received signal quality, edge relay node measurement Interference from the UE-to-edge relay node served by the edge relay node, and one or more of the interference received by the edge relay node served by the UE served by the edge relay node to the UE. If there is one neighboring cell of the current serving cell, the first selecting subunit 102 selects the neighboring cell as the target cell; if there are multiple neighboring cells of the current serving cell, the first selecting subunit 102 sets the multiple phases The neighboring cell is used as the candidate target cell, and one cell is selected as the target cell from the candidate target cells according to the measurement result. At this time, on the basis of the technical solution shown in FIG. 9, the reselection message sent by the first sending module 93 to the current serving cell may further include the target cell identifier of the target cell. After the first selection sub-unit 102 selects the initial serving cell as the target cell, the re-selection request message sent by the first sending module 93 to the current serving cell may further include a determination result that needs to be re-selected with the target cell. When the target cell selected by the first selection sub-unit 102 is not the initial serving cell, in order to determine whether re-selection coordination with the target cell is required, the embodiment may further include a second determining module 104, configured to use the edge relay node and/or The measurement result of the UE served by the edge relay node determines whether reselection coordination with the target cell is required. Specifically, for example, if the signal quality measured by the UE of the overlapping area of the current serving cell and the target cell is stronger than the signal quality measured by the edge relay node of the overlapping area to the target cell, the UE does not select the edge. The relay node provides the service, but selects the target cell to directly provide the service. At this time, after the first selection sub-unit 102 selects the target cell, the role does not function well. In this case, the target cell does not need to be performed. Re-election coordination. On the other hand, if the signal quality of the target cell measured by the UE in the overlapping area of the current serving cell and the target cell is weaker than the signal quality measured by the edge relay node of the overlapping area to the target cell, reselection coordination with the target cell is required. . It should be noted that the above determination manner is only one embodiment of the present invention, and the present invention is not limited to this one. The reselection message sent by the first sending module 93 to the current serving cell includes a determination result that the second determining module 104 determines whether reselection coordination with the target cell is needed. Specifically, since the communication between the edge relay node and other network nodes must pass through the current serving cell, the edge relay node sends a reselection message to the current serving cell, and then the current serving cell processes the result according to the judgment result carried in the reselection message. . The current serving cell sends a reselection request message to the target cell, and the target cell further determines whether to allow the edge relay node to reselect to the target cell according to the result of the determination that the reselection coordination needs to be performed with the target cell. After the node reselects to the target cell, the edge relay node reselects the target cell as its current serving cell; if the edge relay node is not allowed to reselect to the target cell, the edge relay node reselects the target cell. when If the result of the determination is that there is no need to perform reselection coordination with the target cell, it indicates that the selected target cell is inappropriate, and the first selection subunit 102 reselects the target cell. In this embodiment, after the serving cell reselection of the edge relay node, the interference between the edge relay node and the edge relay node, the interference between the edge relay node and the UE, and the interference between the UE and the UE are both It can reduce, and can reduce the interference of the current serving cell and its neighboring cells, thereby effectively solving the ICI problem in the LTE_A system with the relay node. In addition, the first determining sub-unit 101 determines whether it needs to coordinate with the target cell, and the first sending module 93 only reports the determination result to the current serving cell, which saves the signaling overhead between the edge relay node and the current serving cell. In addition, if the current serving cell of the edge relay node is not the initial serving cell, the first selecting sub-unit 102 selects the initial serving cell as the target cell, and does not need the edge relay node and the UE it serves to perform measurement, thereby saving measurement needs. time. FIG. 11 is a schematic structural diagram of a third embodiment of a device for automatically configuring a serving cell of a relay node according to the present invention. On the basis of the schematic diagram shown in FIG. 9, the selecting module 92 selects a target under the trigger of the current serving cell. Community. The first receiving module 91 is further configured to receive a reselection indication message sent by the current serving cell. The selecting module 92 is further configured to select the target cell after the first receiving module 91 receives the reselection indication message. The first receiving module 91 receives the reselection indication message sent by the current serving cell, and specifically includes two situations. For details, refer to the two situations in which the first receiving module 91 receives the reselection indication message sent by the current serving cell in the previous embodiment. , will not repeat them here. On the basis of the schematic diagram shown in FIG. 9, in order to select a target cell, the selection module 92 may specifically include a first judging subunit 101 and a first selecting subunit 102. The first determining sub-unit 101 is configured to determine whether the current serving cell is an initial serving cell, where the initial serving cell is a cell to which the edge relay node belongs when the operator deploys the edge relay node. The first selection sub-unit 102 is configured to select a target cell according to the measurement result of the edge relay node and/or the UE served by the edge relay node, if the current serving cell is the initial serving cell according to the determination result of the first determining sub-unit 101. If the current serving cell is not the initial serving cell, the initial serving cell is selected as the target cell. The measurement result of the UE served by the edge relay node and/or the edge relay node may specifically include the current serving cell measured by the edge relay node and/or the UE served by the edge relay node, and the neighboring cell of the current serving cell. The received signal quality, the interference of the UE to the edge relay node served by the edge relay node measured by the edge relay node, and the link of the edge relay node measured by the UE served by the edge relay node to the UE are subjected to One or more of the disturbances. If there is one neighboring cell of the current serving cell, the first selecting subunit 102 selects the neighboring cell as the target cell; if there are multiple neighboring cells of the current serving cell, the first selecting subunit 102 sets the multiple phases The neighboring cell is used as the candidate target cell, and one cell is selected as the target cell from the candidate target cells according to the measurement result. At this time, on the basis of the technical solution shown in FIG. 9, the reselection message sent by the first sending module 93 to the current serving cell may further include the target cell identifier of the target cell. The target cell selected by the first selection sub-unit 102 is not the initial serving cell. In order to determine whether the current serving cell needs to perform reselection coordination with the target cell, the embodiment may further include a processing module 111, configured to use the edge relay node and / or the measurement result of the UE served by the edge relay node is processed to obtain the processed measurement result. In this embodiment, the reselection message sent by the first sending module 93 to the current serving cell includes the processed measurement result. Then, after receiving the reselection message, the current serving cell determines whether it needs to perform reselection coordination with the target cell according to the processed measurement result carried in the reselection message. When the result of the judgment is that reselection coordination with the target cell is required, the current serving cell sends a reselection request message to the target cell, and the target cell further determines whether the edge relay node is allowed to reselect to the target cell according to whether the edge relay node is allowed to reselect the target cell. If the target cell is reselected, the edge relay node reselects the target cell as its current serving cell; if the edge relay node is not allowed to reselect to the target cell, the edge relay node reselects the target cell. When the result of the judgment is that reselection coordination with the target cell is not required, indicating that the selected target cell is inappropriate, the first selection subunit 102 reselects the target cell. In this embodiment, after the serving cell reselection of the edge relay node, the interference between the edge relay node and the edge relay node, the interference between the edge relay node and the UE, and the interference between the UE and the UE are both Can be reduced, thereby effectively solving the ICI problem in the 1^^_8 system with relay nodes. In addition, the first sending module 93 only reports the processed measurement result to the current serving cell, and the serving cell determines whether it needs to perform reselection coordination with the target cell, thereby saving signaling overhead between the edge relay node and the serving cell. In addition, if the current serving cell of the edge relay node is not the initial serving cell, the first selecting sub-unit 102 selects the initial serving cell as the target cell, and does not need the edge relay node and/or the UE it serves to perform measurement, saving measurement The time required. As shown in FIG. 12, it is a schematic structural diagram of a fourth embodiment of a device for automatically configuring a serving cell of a relay node according to the present invention. In this embodiment, the device 12 may be one of nodes (for example, a base station) of a current serving cell. Physical unit or logical module. The relay node is specifically an edge relay node located in an edge area of the current serving cell, and the serving cell of the edge relay node is not fixed. In this embodiment, the apparatus 12 may specifically include: a second receiving module 121 And a second sending module 122. The second receiving module 121 is configured to receive a reselection message sent by the edge relay node. The reselection message may include an edge relay node identifier and a current serving cell identifier, and the edge relay node sends a reselection message to the current serving cell according to the current serving cell identifier, where the current serving cell learns according to the edge relay node identifier. Following the message sent by the node. The second sending module 122 is configured to send, according to the reselection message received by the second receiving module 121, a reselection request message to the target cell if reselection coordination with the target cell is required. The reselection request message includes reselection coordination parameter information. In addition, the reselection request message may further include a target cell identifier, a current serving cell identifier, and an edge relay node identifier. The second sending module 122 sends a reselection request message to the target cell according to the target cell identifier, and the target cell learns, according to the current serving cell identifier, which cell sends the reselection request message, and the target cell can know which one is according to the edge relay node identifier. Following the node request reselection coordination. The second sending module 122 is further configured to send a reselection confirmation message to the edge relay node, where the reselection confirmation message includes a determination result of the target cell determining, according to the reselection coordination parameter information, whether the edge relay node is allowed to reselect to the target cell. . If the judgment result is that the edge relay node is allowed to reselect, the edge relay node selects the target cell as its current serving cell, and if the judgment result is that the edge relay node is not allowed to reselect, the edge relay node reselects the target. Community. After the edge relay node reselects the new serving cell, the current serving cell can enter a sleep state. In addition, the reselection confirmation message may further include an edge relay node identifier, a target cell identifier, and a current serving cell identifier. The current serving cell sends a reselection confirmation message to the edge relay node according to the edge relay node identifier, and the edge relay node learns, according to the current serving cell identifier, which cell sends the reselection confirmation message, and the edge relay node according to the target cell identifier. It is known which cell is the result of the judgment. In this embodiment, the second receiving module 121 receives the reselection message returned by the edge relay node, and if the reselection coordination with the target cell is required, the second sending module 122 sends a reselection request message to the target cell; and, The receiving module 121 receives the reselection response message for the reselection request message returned by the target cell, and the reselection response message includes a determination result of whether the edge relay node is allowed to reselect to the target cell, so that the edge relay node completes and Reselection coordination between target cells. After the serving cell reselection of the edge relay node, the interference between the edge relay node and the edge relay node, the interference between the edge relay node and the UE, and the interference between the UE and the UE can be reduced; After the relay node is reselected to other cells, the current serving cell can enter a sleep state, which can further reduce interference between the current serving cell and its neighboring cells, thereby effectively solving the ICI problem in the LTE_A system with the relay node. FIG. 13 is a schematic structural diagram of a fifth embodiment of a device for automatically configuring a serving cell of a relay node according to the present invention. The difference from the previous embodiment is that the reselection message may include an edge relay node to determine whether The judgment result of reselection coordination with the target cell is required. On the basis of the structure diagram shown in FIG. 12, the embodiment may further include an obtaining module 131, configured to obtain an edge relay node carried in the reselection message to determine whether it is necessary to perform reselection coordination with the target cell, if The result is that reselection coordination with the target cell is required, and the second sending module 122 is triggered to send a reselection request message to the target cell. Specifically, if the target cell selected by the edge relay node is the initial serving cell, the reselection message includes a determination result that the edge relay node needs to perform reselection coordination with the target cell, and the second sending module 122 determines, according to the determination result, Sending a reselection request message to the target cell, if the target cell selected by the edge relay node is not the initial serving cell, the reselection message includes an edge relay node determining whether it is necessary to perform reselection coordination with the target cell, and the obtaining module 131 obtains the judgment result. On the basis of the technical solution shown in FIG. 12, the second sending module 122 is further configured to send a reselection indication message to the edge relay node. The second receiving module 121 is further configured to receive a reselection message returned by the edge relay node for the reselection indication message. Specifically, the reselection indication message may trigger the edge relay node to reselect the serving cell, and after the edge relay node selects the target cell as the new serving cell, return the reselection whitening to the current serving cell for the reselection indication message. The sending, by the second sending module 122, the reselection indication message to the edge relay node may specifically include the following two situations:

1) When the current serving cell needs to perform inter-cell interference coordination, the edge relay node needs to reselect the new service cell, thereby reducing the interference, and then the second sending module 122 sends a reselection indication message to the edge relay node.

2) When the neighboring cell of the current serving cell is turned on or awake, because the wireless environment changes, whether the edge relay node continues to provide services by the current serving cell needs to be re-coordinated, so the second receiving module 121 receives the current serving cell. And the second sending module 122 sends a reselection indication message to the edge relay node, where the re-selection indication message is included in the re-selection indication message. Information opened by neighboring cells. In this embodiment, the reselection coordination parameter information may include one or more of an edge relay node's relay capability, performance parameters, location information, interference information, and load information. In this embodiment, the obtaining module 131 obtains a determination result that the edge relay node in the reselection message determines whether it needs to perform reselection coordination with the target cell, and if the result of the determination is that reselection coordination with the target cell is required, the triggering is triggered. The second sending module 122 sends a reselection request message to the target cell, and the second receiving module 121 receives the reselection response message for the reselection request message returned by the target cell, where the reselection response message includes whether the edge relay node is allowed to be heavy. The judgment result of the target cell is selected, so that the edge relay node completes the reselection coordination with the target cell. After the serving cell reselection of the edge relay node, the interference between the edge relay node and the edge relay node, the interference between the edge relay node and the UE, and the interference between the UE and the UE can be reduced; After the relay node is reselected to other cells, the current serving cell can enter a sleep state, which can further reduce interference between the current serving cell and its neighboring cells, thereby effectively solving the ICI problem in the LTE_A system with the relay node. In addition, the edge relay node determines whether it is necessary to send a reselection request message to the target cell, and the current serving node only needs to perform corresponding processing according to the judgment result of the edge relay node, thereby saving the letter between the edge relay node and the current serving cell. Make the cost. FIG. 14 is a schematic structural diagram of a sixth embodiment of a device for automatically configuring a serving cell of a relay node according to the present invention. On the basis of the structure diagram shown in FIG. 12, the reselection message may include an edge relay node. And a measurement result of the measured result of the UE or the UE it serves; wherein the measurement result includes the current serving cell and the current serving cell measured by the edge relay node to the UE served by the edge relay node and/or the edge relay node The received signal quality of the neighboring cell, the interference of the UE to the edge relay node served by the edge relay node measured by the edge relay node, and the edge relay node measured by the UE served by the edge relay node One or more of the interference experienced by the UE's link. On the basis of the structure diagram shown in FIG. 12, the third determining module 141 may be further configured to determine, according to the processed measurement result carried in the reselection message, whether reselection coordination with the target cell is required, if necessary and target The cell performs reselection coordination, and triggers the second sending module 122 to send a reselection request message to the target cell. In this embodiment, the second sending module 122 is further configured to return, to the edge relay node, a determination result that does not need to be reselected with the target cell. Then, the edge relay node can learn that the selected target cell is inappropriate according to the judgment result, and reselect the target cell. In this embodiment, the reselection coordination parameter information may include one or more of an edge relay node's relay capability, performance parameters, location information, interference information, and load information. On the basis of the structure diagram shown in FIG. 12, the second sending module 122 is further configured to send a reselection indication message to the edge relay node. The second receiving module 121 is further configured to receive a reselection message returned by the edge relay node for the reselection indication message. Specifically, the reselection indication message may trigger the edge relay node to reselect the serving cell, and after the edge relay node selects the target cell as the new serving cell, return a reselection message to the current serving cell for the reselection indication message. The sending, by the second sending module 122, the reselection indication message to the edge relay node may specifically include two situations. For details, refer to the two cases in which the second sending module 122 sends a reselection indication message to the edge relay node in the previous embodiment, and details are not described herein again. In this embodiment, if the target cell selected by the edge relay node is not the initial serving cell, the third determining module 141 determines whether it needs to perform reselection coordination with the target cell according to the processed measurement result carried in the reselection message. If the result of the determination is that the reselection coordination is performed with the target cell, the second sending module 122 sends a reselection request message to the target cell, and the second receiving module 121 receives the reselection response message for the reselection request message returned by the target cell. The reselection response message includes a determination result of whether the edge relay node is allowed to reselect to the target cell, so that the edge relay node completes reselection coordination with the target cell. After the serving cell reselection of the edge relay node, the interference between the edge relay node and the edge relay node, the interference between the edge relay node and the UE, and the interference between the UE and the UE can be reduced; After the relay node is reselected to other cells, the current serving cell can enter a sleep state, which can further reduce interference between the current serving cell and its neighboring cells, thereby effectively suppressing the 1^^_8 system with the relay node. ICI issue. In addition, the third determining module 141 determines whether it is necessary to send a reselection request message to the target cell, and the edge relay node only needs to send the processed measurement result to the current serving cell, thereby saving the relationship between the edge relay node and the current serving cell. Signaling overhead. FIG. 15 is a schematic structural diagram of a seventh embodiment of a device for automatically configuring a serving cell of a relay node according to the present invention. In this embodiment, the device 15 may be a physical unit of a target cell node (for example, a base station). Or logic module. The relay node is specifically an edge relay node located in an edge area of the current serving cell, and the serving cell of the edge relay node is not fixed. The embodiment may specifically include a third receiving module 151 and a fourth determining module 152. And a third transmitting module 153. The third receiving module 151 is configured to receive a reselection request message sent by the current serving cell of the edge relay node, where the reselection request message includes reselection coordination parameter information, and the fourth determining module 152 is configured to use the reselection request message. Carrying the reselection coordination parameter information, and determining whether the edge relay node is allowed to reselect to the target cell; the third sending module 153 is configured to send a reselection response message to the current serving cell, where the reselection response message includes whether to allow edge relay The judgment result of the node reselecting to the target cell. Then, the current serving cell sends a reselection confirmation message to the edge relay node, and the reselection confirmation message includes a determination result of whether the edge relay node is allowed to reselect to the target cell, and the edge relay node performs processing according to the determination result. If the judgment result is that the edge relay node is allowed to perform reselection to the target cell, the edge relay node selects the target cell as its serving cell; if the judgment result is that the edge relay node is not allowed to reselect to the target cell, the edge relay The node reselects the target cell. In addition, the reselection request message may further include a target cell identifier, a current serving cell identifier, and an edge relay node identifier, where the current serving cell sends a reselection request message to the target cell according to the target cell identifier, and the target cell according to the current serving cell identifier It is known which cell sends the reselection request message, and the target cell can know which relay node requests the reselection coordination according to the edge relay node identifier. In this embodiment, the fourth determining module 152 determines whether the edge relay node is allowed to reselect to the target cell according to the reselection coordination parameter information in the reselection request message, and then the third sending module 153 feeds back the determination result to the current serving cell, thereby Completing reselection coordination between the target cell and the current serving cell, after the serving cell is reselected, interference between the edge relay node and the edge relay node, interference between the edge relay node and the UE, between the UE and the UE The interference can be reduced, thereby effectively solving the ICI problem in the LTE_A system with the relay node. FIG. 16 is a schematic structural diagram of an apparatus for automatically configuring a serving cell of a relay node according to an eighth embodiment of the present invention, which is different from the previous embodiment in that the third receiving module 151 receives the reselection request message. The parameter information that is carried may specifically include one or more of the relay capability, the performance parameter, the location information, the interference information, and the load information of the edge relay node. On the basis of the previous embodiment, the fourth determining module 152 may specifically The fifth determining sub-unit 161 is configured to determine, according to one or more of the relay capability, the performance parameter, the location information, the interference information, and the load information of the edge relay node, whether the edge relay node is allowed to reselect to the target. Community. In this embodiment, the fifth determining sub-unit 161 determines whether the edge is allowed in the edge according to one or more of the relay capability, the performance parameter, the location information, the interference information, and the load information of the edge relay node carried in the reselection request message. The node is reselected to the target cell, and the judgment result is fed back to the current serving cell, thereby completing reselection coordination between the target cell and the current serving cell. After the serving cell reselection of the edge relay node, the interference between the edge relay node and the edge relay node, the interference between the edge relay node and the UE, and the interference between the UE and the UE can be reduced, thereby effectively solving ICI problem in LTE_A system with relay nodes. As shown in FIG. 17, another embodiment of the present invention further provides a system for automatically configuring a serving cell of a relay node. In the system, the relay node is specifically an edge relay node located in an edge area of the current serving cell, and the serving cell node of the edge relay node is not fixed. The system 17 in this embodiment may specifically include an edge relay node 170, a current serving cell node 171, and a target cell node 172. After the edge relay node 170 selects the target cell node 173, it sends a reselection message to the current serving cell node 172. The current serving cell node 172 receives the reselection message, and according to the reselection message, if reselection coordination with the target cell node 173 is required, the reselection request message is sent to the target cell node 173, and the reselection request message includes the reselection coordination parameter. Information, the target cell node 173 receives the reselection request message sent by the current serving cell node, according to The reselection coordination parameter information carried in the reselection request message is used to determine whether the edge relay node 171 is allowed to reselect to the target cell node 173, and sends a reselection response message to the current serving cell node 172, and the reselection response message includes whether to allow The edge relay node 171 reselects the result of the determination to the target cell node 173. After receiving the reselection response message, the current serving cell node 172 sends a reselection confirmation message to the edge relay node 171, where the reselection confirmation message includes the target cell. The node 173 determines whether the edge relay node 171 is allowed to reselect the result of the determination to the target cell node 173 based on the reselection coordination parameter information, and the edge relay node 171 receives the reselection confirmation message. If the result of the determination is that the edge relay node 171 is allowed to reselect, the edge relay node 171 reselects its serving cell to the target cell node 173. If the result of the determination is that the edge relay node 171 is not allowed to reselect, the edge is in the edge. The node reselects the new target cell. It can be understood by those skilled in the art that the current serving cell node 172 may be a base station of a serving cell; the target cell node 173 may be a base station of a target cell. In this embodiment, after the re-selection coordination between the edge relay node and the target cell node, after the serving cell node of the edge relay node is reselected, the interference between the edge relay node and the edge relay node, the edge relay node and The interference between the UEs and the interference between the UE and the UE can be reduced, thereby effectively solving the ICI problem in the LTE_A system with the relay node. It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to be limiting, and the present invention will be described in detail with reference to the preferred embodiments. Modifications or equivalents are made without departing from the spirit and scope of the invention.

Claims

Rights request  A method for automatically configuring a serving cell of a relay node, comprising:  Select the target cell;  Sending a reselection message to the current serving cell; and  Receiving a reselection confirmation message that is sent by the current serving cell according to the reselection message and the reselection coordination of the target cell, where the reselection confirmation message includes the target cell determining whether to allow the relay node to reselect The judgment result of the target cell.  2. The method according to claim 1, wherein the selecting a target cell comprises:  Determining whether the current serving cell is an initial serving cell;  If the current serving cell is an initial serving cell, select a target cell according to the measurement result of the relay node and/or the user equipment served by the relay node;  If the current serving cell is not the initial serving cell, the initial serving cell is selected as the target cell; wherein the initial serving cell is the cell to which the relay node belongs when initially set.  The method according to claim 1, wherein the reselection message includes a measurement result after processing the measurement result of the relay node and/or the user equipment served by the relay node.  The method according to claim 1, wherein the reselection message includes a determination result of determining whether reselection coordination with the target cell is required;  After the selection of the target cell and before sending the reselection message to the current serving cell, the method further includes:  And determining, according to the measurement result of the relay node and/or the user equipment served by the relay node, whether reselection coordination with the target cell is required.  The method according to claim 2, 3 or 4, wherein the measurement result of the relay node and/or the user equipment served by the relay node comprises the relay node and/or the a received signal quality of the current serving cell and a neighboring cell of the current serving cell measured by a user equipment served by the relay node, and a user equipment served by the relay node measured by the relay node to the relay One or more of the interference experienced by the link of the node and the interference received by the user equipment of the relay node to the link of the user equipment to the user equipment.  The method according to claim 2, 3 or 4, wherein the selecting the target cell further comprises: receiving a reselection indication message sent by the current serving cell; or And after the current serving cell receives the opening indication message sent by the neighboring cell of the current serving cell, receiving a reselection indication message sent by the current serving cell according to the opening indication message. A method for automatically configuring a serving cell of a relay node, comprising: receiving a reselection message sent by a relay node;  And the reselection request message is sent to the target cell according to the reselection message, and the reselection request message is included in the reselection request message;  Sending a reselection confirmation message to the relay node, where the reselection confirmation message includes a determination result that the target cell determines, according to the reselection coordination parameter information, whether to allow the relay node to reselect to the target cell. .  The method according to claim 7, wherein the reselection message includes a determination result that the relay node determines whether reselection coordination with the target cell is required;  Before the sending the reselection request message to the target cell, the method further includes:  Obtaining, by the relay node carried in the reselection message, a judgment result of determining whether reselection coordination with the target cell is required.  The method according to claim 7, wherein the reselection message includes the relay node processing the measurement result of the relay node and/or the user equipment served by the relay node. The measurement result is: before the sending the reselection request message to the target cell, the method further includes:  Determining whether reselection coordination with the target cell is required according to the processed measurement result carried in the reselection message.  The method according to claim 7, 8 or 9, wherein the reselection coordination parameter information includes a relay capability, a performance parameter, location information, interference information, and load information of the relay node. one or more.  The method according to claim 9, wherein the measurement result of the relay node and/or the user equipment served by the relay node comprises the relay node and/or the relay node service The received signal quality of the current serving cell and the neighboring cell of the current serving cell measured by the user equipment, and the link of the user equipment served by the relay node to the relay node measured by the relay node The received interference, and one or more of the interference experienced by the relay node to the user equipment measured by the user equipment served by the relay node.  The method according to claim 7, wherein the receiving the reselection message sent by the relay node further includes:  Sending a reselection indication message to the relay node; or  And sending, by the received indication indication message sent by the neighboring cell of the current serving cell, a reselection indication message to the relay node, where the reselection indication message includes information that is opened by the neighboring cell;  The reselection message sent by the receiving relay node is specifically: Receiving a reselection message returned by the relay node for the reselection indication message. A method for automatically configuring a serving cell of a relay node, comprising:  Receiving a reselection request message sent by the current serving cell of the relay node, where the reselection request message includes reselection coordination parameter information;  Determining whether to allow the relay node to reselect to the target cell according to the reselection coordination parameter information carried in the reselection request message;  Sending a reselection response message to the current serving cell, where the reselection response message includes a determination result of whether the relay node is allowed to reselect to the target cell.  The method according to claim 13, wherein, according to the reselection coordination parameter information carried in the reselection request message, determining whether to allow the relay node to reselect to the target cell is specifically :  And determining, according to one or more of the relay capability, the performance parameter, the location information, the interference information, and the load information of the relay node, whether the relay node is allowed to reselect to the target cell.  A device for automatically configuring a serving cell of a relay node, comprising:  a selection module, configured to select a target cell;  a first sending module, configured to send a reselection message to the current serving cell after the selecting module selects the target cell;  a first receiving module, configured to receive a reselection confirmation message sent by the current serving cell according to the reselection message and the reselection coordination of the target cell, where the reselection confirmation message includes whether the target cell determines whether Allowing the relay node to reselect the judgment result to the target cell.  The device according to claim 15, wherein the selection module comprises:  a first determining subunit, configured to determine whether the current serving cell is an initial serving cell;  a first selection subunit, configured to determine, according to a determination result of the first determining subunit, if the current serving cell is an initial serving cell, according to the relay node and/or the user equipment served by the relay node As a result of the measurement, the target cell is selected according to the cell reselection criterion; if the serving cell is not the initial serving cell, the initial serving cell is selected as the target cell; wherein the initial serving cell is the initial setting of the relay node. The cell to which it belongs.  The device according to claim 15, further comprising:  a processing module, configured to process the measurement result of the user equipment served by the relay node and/or the relay node, to obtain a processed measurement result;  The reselected message sent by the first sending module includes the processed measurement result. The device according to claim 15, further comprising: a second determining module, configured to determine, according to the measurement result of the relay node and/or the user equipment served by the relay node, whether reselection coordination with the target cell is required;  The reselection message sent by the first sending module includes a determination result that the second determining module determines whether reselection coordination with the target cell is required.  The apparatus according to claim 16, 17 or 18, wherein the measurement result of the relay node and/or the user equipment served by the relay node comprises the relay node and/or the a received signal quality of the current serving cell and a neighboring cell of the current serving cell measured by a user equipment served by the relay node, and a user equipment served by the relay node measured by the relay node to the relay One or more of the interference experienced by the link of the node and the interference received by the user equipment of the relay node to the link of the user equipment to the user equipment.  The apparatus according to claim 16, 17 or 18, wherein the first receiving module is further configured to receive a reselection indication message sent by the current serving cell; or receive the current serving cell After the start indication message sent by the neighboring cell of the current serving cell, the reselection indication message sent by the current serving cell according to the opening indication message is received;  The selection module is further configured to select a target cell after the first receiving module receives the reselection indication message.  A device for automatically configuring a serving cell of a relay node, comprising:  a second receiving module, configured to receive a reselection message sent by the relay node;  a second sending module, configured to send, according to the reselection message received by the second receiving module, a reselection request message to the target cell, and to the relay node, if reselection coordination with the target cell is required Send a reselection confirmation message;  The reselection request message includes reselection coordination parameter information, where the reselection confirmation message includes the target cell determining, according to the reselection coordination parameter information, whether to allow the relay node to reselect to the target cell. critical result.  The device according to claim 21, wherein the reselection message includes a determination result that the relay node determines whether reselection coordination with the target cell is required;  The device also includes: An obtaining module, configured to obtain a determination result that the relay node that is carried in the reselection message needs to perform reselection coordination with the target cell, and if the determination result is that reselection coordination with the target cell is required, The second sending module is triggered to send a reselection request message to the target cell. The device according to claim 21, wherein the reselection message includes the relay node processing the measurement result of the relay node and/or the user equipment served by the relay node. Post measurement result;  The device also includes:  a third determining module, configured to determine, according to the processed measurement result carried in the reselection message, whether reselection coordination needs to be performed with the target cell, and if reselection coordination with the target cell is required, triggering The second sending module sends a reselection request message to the target cell.  The apparatus according to claim 21, 22 or 23, wherein the reselection coordination parameter information includes a relay capability, a performance parameter, location information, interference information, and load information of the relay node. one or more.  The device according to claim 23, wherein the measurement result of the relay node and/or the user equipment served by the relay node comprises the relay node and/or the relay node service The received signal quality of the current serving cell and the neighboring cell of the current serving cell measured by the user equipment, and the link of the user equipment served by the relay node to the relay node measured by the relay node The received interference, and one or more of the interference experienced by the relay node to the user equipment measured by the user equipment served by the relay node. The device according to claim 21, wherein the second sending module is further configured to send a reselection indication message to the relay node; or receive the current service at the second receiving module. After the start indication message sent by the neighboring cell of the cell, the reselection indication message is sent to the relay node, where the reselection indication message includes information about the neighboring cell being enabled;  The second receiving module is further configured to receive a reselection blank returned by the relay node for the reselection indication message  27. A device for automatically configuring a serving cell of a relay node, comprising:  a third receiving module, configured to receive a reselection request message sent by the current serving cell of the relay node, where the reselection request message includes reselection coordination parameter information;  a fourth determining module, configured to determine, according to the reselection coordination parameter information carried in the reselection request message, whether to allow the relay node to reselect to the target cell; And a third sending module, configured to send a reselection response message to the current serving cell, where the reselection response message includes a determination result of whether the relay node is allowed to reselect to the target cell. The apparatus according to claim 27, wherein the fourth determining module comprises a fifth determining subunit, configured to perform, according to the relaying capability, performance parameter, location information, interference information, and One or more of the load information, determining whether the relay node is allowed to reselect to the target cell.  A system for automatically configuring a serving cell of a relay node, comprising: a relay node, a current serving cell node, and a target cell node;  The relay node is configured to select the target cell node, and send a reselection message to the current serving cell node, and receive the current serving cell node to perform reselection coordination with the target cell node according to the reselection message. a reselection confirmation message sent afterwards;  The current serving cell node is configured to receive a reselection message sent by the relay node, and according to the reselection message, if reselection coordination with the target cell node is needed, send a reselection request to the target cell node. a message, the reselection request message includes reselection coordination parameter information, and the reselection confirmation message is sent to the relay node, where the reselection confirmation message includes the target cell node according to the reselection coordination parameter Determining, by the information, whether the relay node is allowed to reselect the judgment result of the target cell node;  The target cell node is configured to receive a reselection request message sent by the current serving cell node of the relay node, and determine, according to the reselection coordination parameter information carried in the reselection request message, whether to allow the Retransmitting the relay node to the target cell node, and sending a reselection response message to the current serving cell node, where the reselection response message includes determining whether to allow the relay node to reselect to the target cell node result.