35results about How to "Achieving Interference Coordination" patented technology

The invention discloses a method for coordinating semi-static interference, comprising the steps as follows: configuring frequency resources for cells of each base station according to a preset frequency distribution strategy when a system is in an initial state, wherein the frequency resources comprise movable bandwidth; performing united interference coordination when the base station to which user equipment (UE) belongs receives a united interference coordination request sent by an adjacent cell base station after the UE enters the cell interference measurement and reporting stage; and performing distributed interference coordination process according to the interference measurement reports and movable bandwidth of the cell thereof when the base station to which the UE belongs receivesthe interference measurement reports sent by the UE. By adopting the above scheme, the method for coordinating semi-static interference in the invention is suitable for a scene in which each cell hasuniform load distribution as well as a scene in which each cell has non-uniform load distribution.

The invention provides an interference coordinating method including: every other preset period, making statistics on data rate Rn of each RB (resource block) of a cell in a system in a preset period to form an RNTP (relative narrowband transmission power) bit map, and transmitting the RNTP bit map to neighboring cells; and summing the RNTP bit maps received in the preset periods of one optional cell in the system according to the RBs, grouping the RBs according to summing results, and computing transmission power of each RB with the group serving as unit, wherein the transmission power of the RBs in the same group is the same, and the larger summing result the group has, the smaller the transmission power of the RB group is. By the aid of the interference coordinating method, resource utilization effectiveness can be guaranteed, and interference coordination is realized.

The invention provides a method for reducing long term evolution (LTE) radio communication system cell interference by using a cognitive technology. The method comprises the following steps of: 1, setting a threshold value for dividing users in the cell into centre users and edge users; 2, configuring frequency resources for the users in the cell of the base station according to the preset initial frequency resource allocation rule by each base station; 3, judging the type of user equipment (UE) of the service which the newly added cell prepares for initiating according to a threshold value; 4, according to a judged result in 3, allocating frequency resources for the newly added UE according to a second preset frequency resource allocation rule by each base station; or allowing the newly added UE to independently select a usable spectrum for communication by using the cognitive technology; and 5, allocating power resources for the cell according to the UE type configured to each frequency resource. The technical scheme provided by the invention enables the frequency resources used in each cell to realize distribution according to needs and to dynamically change along with the change of the cell load. The cell resource is fully utilized, the interference coordination is effectively realized, and the spectrum utilization rate is improved.

The invention provides a heterogeneous network interference coordinating method. The heterogeneous network interference coordinating method comprises the following steps: a micro base station macro eNB informs load information through a load, informing current master control carrier configuration information of a cell or currently-available carrier resource information of a femto base station Pico eNB notified to the femto base station, wherein available carrier resources do not comprise a currently-configured master control carrier of the micro base station; and the femto base station configures the master control carrier and an auxiliary control carrier of the cell according to the configuration information or the available carrier resource information and according to a principle that the micro base station and the femto base station have different carrier configurations. By the heterogeneous network interference coordinating method, the Pico eNB and the macro eNB are ensured to use different carrier configurations and interference on Pico peripheral UE (user equipment) on a control channel can be minimized so as to coordinate the interference.

The embodiment of the invention discloses a data communication method, system and device, which are applied in the technical field of communication. The first base station where the serving cell of the user equipment is located will determine resource scheduling information for the user equipment to perform data communication in the serving cell, and send the resource scheduling information to a second base station where the coordinated cell of the user equipment is located. The base station, so that the second base station prohibits other user equipment from occupying the resource corresponding to the resource scheduling information; receiving the information that the scheduling is not allowed returned by the second base station, the first base station will send an uplink authorization to the user equipment, allowing the user equipment in the serving cell Data communication is performed on the resources corresponding to the above resource scheduling information. In this way, resource occupation conflicts of user equipments among base stations can be avoided, interference coordination of each cell can be realized, and interference of data communication of user equipments in a coordinated cell to data communication of user equipments in this cell can be avoided.

The invention discloses an interference coordination method based on femtocell clustering and macro user scheduling in a heterogeneous network. By adopting the interference coordination of femtocell clustering and macro user scheduling in the heterogeneous network, the femtocell perceives whether there are macro users around, and in each A femtocell interference cluster is formed around the macro user, and the interference cluster corresponding to the macro user requesting to access the network reports feedback information to the macro base station through the feedback link, and the macro cell selects a group of K candidate macro users for scheduling according to the feedback information, and the macro cell According to the channel information of the macro users in the current time slot, K-1 macro users are selected to transmit data, and the interference cluster corresponding to the remaining macro users is notified to communicate normally in the time slot, and the macro user scheduling is repeated until the entire scheduling is completed. The invention not only ensures the coverage of the macrocell, but also can realize more efficient frequency spectrum and power utilization compared with the prior art.

The invention discloses a heterogeneous wireless network uplink interference suppression method based on association control. The method mainly solves the problem about how to conduct association control on users so as to reduce cross-layer interference between macro cells and home cells and improve network performance when home base stations are opened and the users have access to the home base stations. The method includes the steps that mathematical description is conducted on the problem, and modeling is conducted on the problem to form an optimization problem with an objective function as the system throughput; due to the fact that the problem is an NP-Hard problem, the solution to the problem is divided into two parts, firstly, all the base stations perform sub-channel allocation so as to achieve interference coordination, and then a central controller performs access control on the users according to path gain information fed back by all the base stations so as to achieve interference transfer. Thus, the solution to the problem is obtained through a mode which can be implemented. Through interference coordination and interference transfer, finally the method reduces cross-layer interference of heterogeneous wireless network uplinks and improves the network throughput. The method can be applied to association control and interference suppression of the heterogeneous wireless network uplinks.