44results about How to "Reduce downlink interference" patented technology

The embodiment of the invention discloses a method and equipment for coordinating downlink transmitting power between base stations. By applying the technical scheme of the embodiment of the invention, the coordination of downlink transmitting power between the base stations can be carried out under the condition of fully taking the ABS configuration information of an interference base station into account, so that the downlink interference between the base stations is reduced, the throughput of a system in the downlink direction is improved, the generation of conditions of interference, and the like caused by dispatching a cell edge user by mistake through continuously using an intercell interference eliminating technology in an isomorphism network under the condition of introducing ABS is prevented, and thereby the use experience of the user is improved and the communication quality of the system is guaranteed.

The invention discloses a method and equipment for distributing PDSCH (physical downlink shared channel) power. The method comprises the following steps that: base station equipment obtains downlink path loss information corresponding to UE (user equipment); the base station equipment determines a power regulation step corresponding to the downlink path loss information through inquiring the corresponding relation between a path loss threshold interval and the power regulation step; and the base station equipment distributes the current PDSCH transmission power of the UE through the power regulation step and the average transmission power of a downlink PDSCH unit RE (resource element). According to the embodiment of the invention, the equipment can carry out dynamic adjustment on the PDSCH transmission power of the UE, can be used for effectively reducing downlink interference among subzones, promoting the downlink property of edge users, and guaranteeing the downlink fairness of the users.

The invention discloses two interference communication methods under a heterogeneous network. A first method comprises the following steps that: when the path loss from a macro terminal (MUE) which is currently interfered most seriously to a family base station HeNB is correctly calculated based on the family base station HeNB, the number of hollow sub frames sent by the HeNB is adjusted, so that the purpose of downlink interference to the MUE is achieved, and simultaneously, the problem that the number of the hollow sub frames is too large and the self performance of the HeNB is affected is solved; and a second method comprises the following steps that: when the path loss from the MUE which is currently interfered most seriously to the HeNB is correctly calculated based on the HeNB, the downlink interference to the MUE is reduced by adjusting the sending power of the HeNB.

The invention discloses an interference suppression method in a wireless cellular network, which comprises the following steps: when a second cellular user in active state suffers from the downlink interference of a first cellular base station around, the first cellular base station is notified that a second cellular user currently suffers from the downlink interference thereof; and the first cellular base station re-distributes the spectrum resources used by the first cellular user communicating therewith. The invention further discloses a first cellular base station, a second cellular user and a second cellular base station for implementing the interference suppression method. Through the invention, when a second cellular user in active state suffers from the downlink interference of a first cellular base station around, the first cellular base station can adjust the spectrum resources used by the first cellular user through resource scheduling, so as to reduce the downlink interference on the second cellular user in active state and reduce influence on communication between the second cellular user and the second cellular base station.

The invention discloses a random access method, a base station and a terminal, belonging to the technical field of communication. The method comprises the following steps that: the base station receives an uplink random access message transmitted by the terminal; the base station transmits a downlink random access message to the terminal on a protected subframe, thereby enabling the terminal to access to the base station. The base station comprises a receiving module and a transmitting module. The terminal comprises a transmitting module and a receiving module. The downlink random access message is transmitted to the terminal via the protected subframe, in this way, the aim of reducing the downlink interference of an encroaching base station to the base station while accessing is realized, in comparison with the prior art, the technical method of the embodiment of the invention can make the terminal be free from the downlink interference in the random access competition and the random access process, the access success rate is improved, and the communication performance is also improved.

The invention discloses a method for scheduling a switched terminal, a method for switching a terminal and a base station, belonging to the field of communication technology. The method for scheduling the switched terminal comprises a step that a target base station schedules a terminal from a source base station on a protected subframe. The method for switching the terminal comprises the following steps: the target base station carries out switching optimization according to indication information; the indication information is used for indicating the terminal from the source base station as a disturbed terminal; or the indication information is used for indicating that switching decision carried out on the terminal from the source base station is based on an ABS measurement result; or the indication information is used for indicating that a measurement mode of the terminal from the source base station is ABS measurement; or the indication information is used for indicating the target base station to schedule the terminal from the source base station on the protected subframe; or the indication information is used for indicating scheduling of the terminal from the source base station on a specific subframe.

A method is provided in a small cell base station comprising multiple antennas of controlling reception pattern by selecting a subset of the antennas for use. The method comprises determining a ranking value for each of subsets of the antennas dependent upon measurements of received signal quality, and choosing the subset of the antennas for use that provides the highest ranking value

The invention discloses a method and a device for coordinating the downlink interference of a long term evolution (LTE) system. The method comprises the following steps of: acquiring the quantity demand of a high-power-frequency-band physical resource block (PRB) of a cell group; dynamically setting the high-power-frequency-band PRB of adjacent cells according to the acquired quantity demand of the high-power-frequency-band PRB and pre-configured static high-power-frequency-band PRB of the cell group; and coordinating downlink power, load or switching of an edge user of the current cell according to the quantity demand of the high-power-frequency-band PRB of the cell group, the high-power-frequency-band PRB which is required by normal running of a system, the dynamically set high-power-frequency-band PRB of the current cell, the static high-power-frequency-band PRB which is distributed to the current cell in advance, and the load balancing degree of the edge user of the current cell and the edge user of the adjacent cell. By the method and the device, the downlink interference can be reduced, the adjusting frequency of the high-power-frequency-band PRB can be reduced and the stability of an LTE system can be improved.

The application discloses a downlink resource configuration method and apparatus. The method includes: configuring priority scheduling resources and secondary priority scheduling resources for cells in advance to enable the priority scheduling resources of the adjacent cells to be different; during semi-static scheduling, performing scheduling by preferably employing the priority scheduling resources (namely preferably employing non-priority scheduling resources of the adjacent cells) of the cell instead of employing occupied semi-static scheduling resources fed back by the adjacent cells; andduring dynamic scheduling, performing scheduling by employing system resources which are not occupied by the cell and the adjacent cells in a current dynamic scheduling period. By employing the method and apparatus, the downlink interference between the cells can be effectively reduced.

The invention discloses a method for transmitting downlink user data, which is used in a distributed antenna mobile communication system. The method comprises the steps of collecting all antenna signals; determining corresponding effective antennae carrying effective information of users; and allocating the downlink data of the users to the determined corresponding effective antennae and transmitting to the users. The method provided in the embodiment of the invention can effectively reduce interference among user data when transmitting downlink user data, and increase the antenna power allocated to the users from the down link.

A method of interference suppression in a wireless cellular network includes notifying a first base station that there is a second User Equipment (UE) that currently suffers downlink interferences from the first base station, when an second UE in an active state suffers the downlink interferences from the first base station; and reallocating, by the first base station, spectrum resources for a first UE communicating with the first base station. A first base station, a second UE and a second base station for implementing the above method of interference suppression are also provided. When the second UE in the active state suffers the downlink interferences from an adjacent first base station, the first base station can adjust the spectrum resources occupied by the first UE through resource scheduling, so as to reduce the downlink interferences on the second UE in the active state, thus to reduce the influence on the communication between the second UE and the second base station.

The invention discloses a downlink transmission method of a TD-SCDMA base station of collocated distributed antenna units, wherein the method comprises the following steps: firstly, obtaining the antenna number information which is contained in each collocated distributed antenna unit by a base station, secondly, respectively calculating route loss from a terminal to each distributed antenna unit by the base station, thirdly, selecting an optimum distributed antenna unit of the terminal according to the downlink transmission weight of each distributed antenna unit by the base station, and fourthly, transmitting a downlink signal to the terminal on the optimum distributed antenna unit by the base station. The technical scheme which is provided by the invention can determine a downlink transmission signal of each distributed antenna unit which is allocated on the TD-SCDMA base station by the terminal, and thereby the TD-SCDMA base station of the collocation distributed antenna units focuses the downlink signal energy of the terminal on a distributed sub-domain which comprises the terminal, which not only improves the using efficiency of the downlink signal energy, but also reduces unnecessary downlink interference.

The invention belongs to the technical field of intelligent door lock application by adopting a LoRa networking mode, and discloses a working method of intelligent door lock based on the LoRa technology. The working method comprises a mode setting mode and an unlocking method. The problem is solved that a lot of downlink interference is generated a lot of intelligent door lock devices are connected in the same gateway to cause too fast electric quantity loss, a working mode of time-share switching of an intelligent door lock is achieved, the unnecessary electric quantity loss caused by the downlink interference of the server at the door-open frequent time frame is avoided, the service life of the intelligent door lock is improved, so that the user experience and the market competitivenessare improved, and the working method of intelligent door lock based on the LoRa technology is suitable for promotion and use.

The invention discloses a method for limiting the transmitted power of a terminal, and wireless access equipment. The method for limiting the transmitted power of the terminal comprises the following steps of: acquiring a transmitted power value of the wireless access equipment; acquiring a downlink interference value in a coverage area of the wireless access equipment; determining a limited transmitted power value of the terminal according to the transmitted power value of the wireless access equipment and the downlink interference value; and controlling the transmitted power of the terminalto be not more than the limited transmitted power value of the terminal. The method limits the transmitted power of the terminal according to the transmitted power value of the wireless access equipment and the downlink interference intensity in the coverage area of the wireless access equipment to basically balance uplink coverage and downlink coverage and reduce the uplink interference of the terminal to other adjacent access equipment.

The invention discloses a method for allocating frequency spectrum resource and a device thereof. The method comprises a step of obtaining the interference value of an adjacent base station measured by first user equipment when a sub band is needed to be added to the served first user equipment and if total spectrum resource has no idle sub band which is allocated to the first user equipment, a step of determining a candidate sub band according to the occupation of the sub band, wherein the candidate sub band does not comprise a sub band whose interference value is larger than a first threshold occupied by the adjacent base station and does not occupy a sub band occupied by the first base station, a step of sending same frequency resource multiplex application to the adjacent base station which occupies the candidate sub band, and a step of multiplexing the sub band and allocating the sub band to the first user equipment for use through the first base station for any candidate sub band in the same frequency resource multiplex application when the multiplexable responses of all the adjacent base stations which occupy the sub band are received, wherein the multiplexable responses comprise the identification of the sub band. According to the method, the utilization of spectrum resources can be improved.

The invention provides a transmitting and receiving method and system of a sub-frame coordinate signal applied to a mobile network. The method provided by the invention comprises the steps of: grouping mobile equipment in a range covered by a macro base station by a transmitting system; next, generating the sub-frame coordinate signal required by each group based on a plurality of different power values of data transmitted by the macro base station in a non-zero almost blank sub-frame and transmitting the sub-frame coordination signal to the mobile equipment in the corresponding group; then determining the actual power of the data transmitted by each non-zero almost blank sub-frame by a receiving system based on the acquired sub-frame coordination signal and the power value of the data transmitted by each non-zero almost blank sub-frame in the sub-frame coordination signal. Thus, the micro base station outside the corresponding power coverage range can be effectively protected, so that more flexible scheduling between the macro base station and the micro base station covered by the macro base station is realized, and the transmitting power of unicast data is effectively reduced.

This invention discloses a method and a system for controlling soft switch link power in the CDMA network, which monitors emission power of the down code domain of all soft switch branches and up received S / N ratio of a UE terminal to get the down code domain emission power of the branch with the strongest S / N ratio and takes it as the reference to close the down emission of the soft switch branches with greater emission power but do not play an important part and maintains the up-reception of them to ensure the performance. If an optimum area where the branch with the greatest S / N ratio places changes and its down emission is closed, then the emission of the changed optimum area is started and the initial down domain emission power of the branch is taken as the reference value.

A method and apparatus are disclosed whereby noise is introduced at one or more base stations in non-HSDPA cells into the uplink signal from one or more user devices. As a result, the apparent quality of the uplink channel in those cells will appear to be lower than the actual quality of that channel. The power control commands issued from the base station to the user device will, therefore, reflect this lower estimated channel quality and, as a result, the user device will follow power control commands from the base station in the HSDPA cell. Therefore, the transmit power of the user device will remain adequate to communicate with the base station in the HSDPA cell and, as a result, the UL and DL in the HSDPA cell will remain synchronized.

The invention discloses a self-adapted inter-cell interference coordination method based on a cell candidate PCC. The method includes the following steps: firstly, defining a component carrier of a sending user PDCCH to be the PCC and a component carrier of a sending user PDSCH to be an SCC, and then performing self-adapted inter-cell interference coordination based on cell candidate PCC self-optimizing and self-adapted inter-cell interference coordination based on cell candidate PCC self-optimizing. On the premise of guaranteeing the overall spectral efficiency of macro+pico, the user PDCCHSINR and the PDSCH SINR of a pico cell are improved, and edge user throughput and cell throughput have large gain; the user PDCCH SINR of a macrocell is improved. The strengthened inter-cell interference coordination method based on the cell candidate PCC self-optimizing can self-adapt to the deployment location and the user distribution of pico eNB, and therefore the downlink interference of the macrocell between the pico cells is effectively reduced.

The embodiment of the invention discloses a method and equipment for coordinating downlink transmitting power between base stations. By applying the technical scheme of the embodiment of the invention, the coordination of downlink transmitting power between the base stations can be carried out under the condition of fully taking the ABS configuration information of an interference base station into account, so that the downlink interference between the base stations is reduced, the throughput of a system in the downlink direction is improved, the generation of conditions of interference, and the like caused by dispatching a cell edge user by mistake through continuously using an intercell interference eliminating technology in an isomorphism network under the condition of introducing ABS is prevented, and thereby the use experience of the user is improved and the communication quality of the system is guaranteed.

A method for sending downlink user data is provided, which is used in distributed antenna mobile communication system. The method includes: Collecting all antennae signals; Determining effective antennae to bear every user's data according to the antennae signals; Allocating user's downlink data to the corresponding effective antennae and then sending them.

The present invention discloses an adaptive inter-cell interference coordination method based on cell candidate primary component carriers. Firstly, the component carrier that transmits the user physical downlink control channel is defined as the primary component carrier, and the component carrier that transmits the user physical downlink shared channel is defined as the secondary component carrier. ; Then perform adaptive inter-cell interference coordination based on self-optimization of cell candidate primary component carriers and adaptive inter-cell interference coordination based on self-optimization of cell candidate primary component carriers. Under the premise of ensuring the overall spectral efficiency of macro+pico, the user PDCCH SINR and PDSCH SINR of the pico cell are improved, and the edge user throughput and cell throughput have a large gain; the user PDCCH SINR of the macro cell is improved. The enhanced inter-cell interference coordination method based on the self-optimization of cell candidate primary component carriers can adapt to the deployment location of pico eNB and user distribution, and effectively reduce the downlink interference between macro cells to pico cells and between pico cells.

This application discloses the downlink resource configuration method and device proposed by the present invention, which configures priority scheduling resources and sub-priority scheduling resources for each cell in advance, and makes the priority scheduling resources of each neighboring cell different, and avoids using neighboring cells during semi-static scheduling. The occupied semi-static scheduling resources fed back by the district, and the priority scheduling resources of the own cell (that is, the non-priority scheduling resources of the neighboring cells are preferentially used) for scheduling. The system resources not occupied by the zone are scheduled. The present invention can effectively reduce inter-cell downlink interference.

The invention provides a transmitting and receiving method and system of a sub-frame coordinate signal applied to a mobile network. The method provided by the invention comprises the steps of: grouping mobile equipment in a range covered by a macro base station by a transmitting system; next, generating the sub-frame coordinate signal required by each group based on a plurality of different power values of data transmitted by the macro base station in a non-zero almost blank sub-frame and transmitting the sub-frame coordination signal to the mobile equipment in the corresponding group; then determining the actual power of the data transmitted by each non-zero almost blank sub-frame by a receiving system based on the acquired sub-frame coordination signal and the power value of the data transmitted by each non-zero almost blank sub-frame in the sub-frame coordination signal. Thus, the micro base station outside the corresponding power coverage range can be effectively protected, so that more flexible scheduling between the macro base station and the micro base station covered by the macro base station is realized, and the transmitting power of unicast data is effectively reduced.

The present information discloses a method for adjusting multi-cell downlink power control, which includes the following steps of: (1) in the process of soft switch, monitoring the difference between the downlink transmission power and the preset referential power of a wireless link and the contraction coefficient thereof in software switch activation set; (2) deciding the accumulated value of power adjustment according to the difference and the contraction coefficient; (3) executing power accessory adjustment on the basis of power control if the accumulated value is above the preset threshold. The method of the invention, through the adjustment to contraction of the transmission power of the base stations to the preset referential power under soft switch, avoids too much deviation of thedownlink transmission power of the wireless links of the same terminal, thus ensuring software switch and gaining, lowering downlink disturbance, and lowering dropping rate.

The invention provides an access processing method and device and a communication system. The method comprises the following steps: determining user equipment to be accessed according to the receiving strength of a pilot signal which is received by each first user equipment in a Macro Cell layer and is emitted by a base station in the Macro Cell layer and a preset threshold value corresponding to the first user equipment, and determining an SC-AP (Small Cell Access Point) to be accessed according to the quantity of second user equipment currently serving at each SC-AP in a Small Cell layer and the upper limit value corresponding to each SC-AP; determining reference user equipment in the second user equipment under each SC-AP to be accessed respectively according to the SINR (Signal to Interference plus Noise Ratio) on each PRB (Physical Resource Block) of each second user equipment under each SC-AP to be accessed; determining an SC-AP to be accessed corresponding to each user equipment to be accessed, and determining PRBs occupied by assess of the user equipment to be accessed to the corresponding SC-AP to be accessed according to the SINR of the reference user equipment at the SC-AP to be accessed on each PRB; accessing each user equipment to be accessed to corresponding SC-AP to be accessed according to the determined PRBs respectively.

The invention provides a downlink interference elimination method based on carrier waves in a hybrid network. The method comprises the steps that an OAM initially configurates protected resources of each cell in advance, namely a certain carrier wave is determined to be a first-choice Pcell of a user belonging to each cell, and a base station of each cell knows initial configuration information of the protected resources of an adjacent cell; the base station of each cell configurates protected weights of the usable carrier waves of the cells, the weights of the initial configuration protected resources are not changed, the weights of the remaining useable carrier waves are determined according to protected weight information of each carrier wave of the adjacent cell and the load of each carrier wave of the adjacent cell, and when the configuration information and the load of the carrier waves of the adjacent cell are changed, the weights of the usable carrier waves are changed; the protected weight configuration information and the load information of each carrier wave of the cells are intersected among the cells; the Pcell and the Scell of the user belonging to each cell are configurated according to the weights of the protected resources of each cell and the position information of the user in each cell. According to the downlink interference elimination method based on the carrier waves in the hybrid network, the hybrid downlink interference is effectively reduced, the limited spectrum resources are fully utilized, and service jamming on the carrier waves is avoided.

The present invention provides a carrier-based downlink interference elimination method in a hybrid network, including: OAM initially pre-configures the protected resources of each cell, that is, determines that a certain carrier is the preferred Pcell of the subordinate users of the cell, and the base stations of each cell know that adjacent cells are protected The initial configuration information of resources; the base station of each cell configures the weight of the protected carrier available in its own cell, and the weight of the initially configured protected resource does not change, and the weight of the remaining available carriers is determined according to the protected weight information of each carrier in the adjacent cell and its load , when the carrier configuration information and load of adjacent cells change, the weight of the available carrier will change accordingly; the protected weight configuration information and load information of each carrier in each cell are exchanged between the cells; The Pcell and Scell ​​of the home user are configured in the location information of the cell. The invention effectively reduces the downlink interference of the hybrid network, fully utilizes limited frequency spectrum resources, and avoids service congestion on the carrier.

The invention discloses two interference communication methods under a heterogeneous network. A first method comprises the following steps that: when the path loss from a macro terminal (MUE) which is currently interfered most seriously to a family base station HeNB is correctly calculated based on the family base station HeNB, the number of hollow sub frames sent by the HeNB is adjusted, so that the purpose of downlink interference to the MUE is achieved, and simultaneously, the problem that the number of the hollow sub frames is too large and the self performance of the HeNB is affected is solved; and a second method comprises the following steps that: when the path loss from the MUE which is currently interfered most seriously to the HeNB is correctly calculated based on the HeNB, the downlink interference to the MUE is reduced by adjusting the sending power of the HeNB.