111 results about "Cell throughput" patented technology

The invention discloses a channel status indicator (CSI) measuring method which comprises the steps of: an eNB sends a CSI measuring indication to a UE before an SCell is activated; and the UE carries out a CSI measurement according to the CSI measuring indication. Correspondingly, the invention further provides a CSI measuring system which can ensure that the UE reports an accurate CSI measurement result to the eNB after the SCell is successfully activated so that the SCell can be accurately scheduled after being successfully activated, which is conducive to the improvement of utilization rate of wireless resources and cell throughput, and a more significant scheduling gain especially for a situation of a larger number of activated Scells or more frequent activation or deactivation operations.

A radio communication apparatus enhances cell throughput by adaptive selection of spatially multiplexed channels in consideration of interferences in a local cell and reducing load for calculation of array weights by storing them in advance as fixed values and outputting fixed beams. To reduce the calculation load for the adaptive selection of spatially multiplexed channels that takes interferences within the local cell into consideration, the radio communication apparatus adopts a packet scheduling method that selects a combination of fixed beams and determines the number of spatially multiplexed channels, based on the fixed beams for mobile apparatuses with packets waiting to be transmitted and pre-calculated correlative quantities of inter-beam interferences between these fixed beams.

The invention discloses a multi-antenna pilot frequency mapping method by aiming at a second frame structure of a long-term evolution system. A base station sends control information to a mobile terminal by precoding according to a request of the terminal; the mobile terminal computes a channel matrix according to a resource block in the control information, and feeds the obtained channel information to the base station; the base station determine a multi-antenna processing mode used by the data channel according to the channel information, and sends the control information of the multi-antenna processing mode to the mobile terminal; the base station sends information of the data channel by the multi-antenna processing mode, and inserts the pilot frequency with a pilot frequency structurecorresponding to the multi-antenna processing mode; and the mobile terminal estimates the control channel and the data channel by the multi-antenna processing mode and the corresponding pilot frequency structure, and finishes decoding of the received data. The method supports space division multiplexing of multi-beams and improves a cell throughput; and the base station smartly selects an MIMO mode used by the mobile terminal according to the condition of the channel.

The invention discloses a method for determining cell throughput, which aims at solving the problem that the evaluation on the network performance of an HSUPA (High Speed Uplink Packet Access) system is inaccurate because the cell throughput is determined according to the static parameters and the throughput of the HSUPA system is determined according to the determined cell throughput in the prior art. The method comprises the following steps of: measuring the current RSCP (Received Signal Code Power) value of a P-CCPCH (Primary Common Control Physical Channel) of each cell in the HSUPA system; and determining the throughput of each cell, wherein, for each cell, the E-DCH (Enhanced Dedicated Channel) signal to noise ratio of the cell is determined according to the RSCP value of the P-CCPCH of the cell and adjacent cells, and the throughput of the cell is determined according to the determined signal to noise ratio and the corresponding relationship between the preset cell signal to noise ratio and the cell throughput. When the technical scheme of the invention is adopted, the accuracy of the evaluation on the network performance of the HSUPA system can be improved. The invention is more favorable for the network planning and optimization.

The invention discloses message transmission method and system. The method comprises the steps of encapsulating a GTPU head and a tunnel head for an uplink message through a relay base station device; sending the uplink message to a CPE (Central Processing Element); modifying the source IP address of the tunnel head into the public network IP address of the relay base station device through the CPE; sending the uplink message to DeNB; encapsulating corresponding IP+UDP+GTPU head for the uplink message through the DeNB; sending the uplink message to an SGW (Signal Gate Way); de-encapsulating the IP+UDP+GTPU head encapsulated in the uplink message through the SGW; sending the uplink message to a tunnel server through the relay base station device according to the target IP address of the tunnel head, encapsulated in the uplink message; de-encapsulating the tunnel head encapsulated in the uplink message by the relay base station device through the tunnel server; sending the uplink message to the SGW; sending the uplink message to a target device through the SGW according to the target IP address of the uplink message. According to the method and system, the difficulty at deployment for wired transmission can be solved through the wireless transmission environment, and therefore, the problem of limitation on communication in some regions is avoided, the system coverage range is expanded, and the cell throughput is increased.

The present invention discloses a method and an apparatus for modifying a channel quality indication (CQI). This method may comprise: calculating a scaling factor for the channel quality indication based on uplink channel information and an antenna virtualization pre-coding scheme; and modifying the channel quality indication reported by user equipment by using the scaling factor. According to the technical solutions of the present invention, the antenna virtualization factor is considered in performing CQI modification and. Thus, this solution can overcome the problem of CQI mismatch, enhance the completeness and accuracy of CQI feedback, and improve the cell throughput performance and frequency utilization.

The invention discloses a method for transmitting a downlink multi-user multiple input multiple output (MIMO) signal and a base station. The method comprises the following steps of: dividing remote radio frequency unit (RRU) ports into P / M antenna groups, and storing corresponding relationships between the antenna groups and the ports; judging channels with users, and finding antenna groups corresponding to the channels; receiving pre-coding matrixes fed back from the users, selecting users in different antenna groups, and performing downlink multi-user MIMO transmission; informing the users of the antenna groups and the pre-coding matrixes for downlink data transmission, wherein the pre-coding matrixes are selected from a codebook set with a port number M by the users; and weighting data according to the pre-coding matrixes, outputting the weighted data to the users at antenna ports of the users, and not transmitting the data of the users by using the other ports. Useful signal transmission power is improved, interference is reduced, and indoor cell throughput is improved.

Disclosed are a receiving apparatus, a data receiving method, a channel estimating apparatus and a channel estimating method for multi-user interference (MUI) signals according to the present invention. The channel estimating apparatus for MUI signals has: a user type determining section configured to determine whether a UE apparatus corresponding to an own station belongs to a first type user or a second type user and to determine demodulation information to use in channel estimation of MUI signals based on the type of the UE apparatus corresponding to the own station; and a second channel estimating section configured to perform channel estimation of a multi-user interference signal based on the determined demodulation information to use in channel estimation of MUI signals. In the present invention, the UE apparatus is classified by type and the demodulation information to use in channel estimation of MUI signals is determined based on the type of the UE apparatus. With this structure, it is possible to improve channel estimation accuracy and further to improve the performance of data reception and user and cell throughputs.

The invention aims to provide a method and equipment for realizing dispatching of users based on inter-cell interference coordination parameters. Specifically, a base station end sends inter-cell interference coordination information obtained by detection to corresponding central control equipment; inter-cell interference coordination parameter information corresponding to the inter-cell interference coordination information and service load ratio information which are sent by the central control equipment are received; according to the service load ratio information, the inter-cell interference coordination parameter information is finely adjusted, so as to obtain corresponding target inter-cell interference coordination parameter information; and according to the target inter-cell interference coordination parameter information, users that the base station serves are dispatched. Compared with the prior art, the method provided by the invention can inhibit interference between macro cells and interference of macro cells to micro cells, can dynamically adapt to changes of nonuniform service loads and user distribution in an LTE-A network, and also remarkably improves cell throughput, particularly the throughput of cell edge users.

The present invention discloses a method and an apparatus for modifying a channel quality indication (CQI). This method may comprise: calculating a scaling factor for the channel quality indication based on uplink channel information and an antenna virtualization pre-coding scheme; and modifying the channel quality indication reported by user equipment by using the scaling factor. According to the technical solutions of the present invention, the antenna virtualization factor is considered in performing CQI modification and. Thus, this solution can overcome the problem of CQI mismatch, enhance the completeness and accuracy of CQI feedback, and improve the cell throughput performance and frequency utilization.

A radio communication apparatus enhances cell throughput by adaptive selection of spatially multiplexed channels in consideration of interferences in a local cell and reducing load for calculation of array weights by storing them in advance as fixed values and outputting fixed beams. To reduce the calculation load for the adaptive selection of spatially multiplexed channels that takes interferences within the local cell into consideration, the radio communication apparatus adopts a packet scheduling method that selects a combination of fixed beams and determines the number of spatially multiplexed channels, based on the fixed beams for mobile apparatuses with packets waiting to be transmitted and pre-calculated correlative quantities of inter-beam interferences between these fixed beams.

Cell throughput improvement and high-speed processing of the same technology are achieved by establishing an adaptive control technology of the spatial multiplexing number in consideration of interference within the cell itself applied to a wireless communication device outputting a fixed beam. Regarding the adaptive control technique involving the number of spatial multiplexing and fixed beam combination selection in consideration of interference within the cell itself, a packet scheduling method for selecting a combination of fixed beams with reference to a cross-correlation amount between fixed beams is key. On the other hand, for the high-speed processing of the same technology, it is key to use a wireless communication device that stores array weights in a memory and outputs a fixed beam by referring to the memory. By generating fixed beams, it is possible to reduce the calculation amount of array weights for each terminal. In addition, since the array weight is a fixed value, the amount of mutual interference between fixed beams is also a fixed value, and high-speed adaptive technology can be provided.