83 results about "User density" patented technology

A mobile data communications system includes a cellular wireless data communications network, such as a GPRS or CDPD network, including a plurality of base stations that communicate with terminals according to a first radio interface. The plurality of base stations are coupled to a control node, such as a GPRS Serving GPRS Support Node (SGSN) or a CDPD Mobile Data Intermediate System (MD-IS), that administers services, such as mobility management and billing, for terminals communicating with the base stations. The system also includes a wireless local area network (LAN), such as a mobile IP network, that is operative to communicate with terminals according to a second radio interface. The system further includes a mobile data internetworking system that is coupled between the control node and the wireless local area network and that provides data communications therebetween. The wireless LAN may have a coverage area that overlaps or adjoins a coverage area of the cellular wireless data communications network, such that, for example, higher user densities and / or data rates may be supported in “hot spots,” such as airports, hotels, convention centers and the like.

A satellite system comprises at least one satellite that receives and transmits signals from / to user terminals located in a service area covered by a plurality of beams, frequencies used in each beam being allocated in order to allow frequency reuse. The beam sizes, the bandwidth used in each beam and the power density in each beam are chosen as a function of the user density in the service area.

The invention discloses a low-orbit satellite network addressing and routing method and system based on satellite-ground decoupling. The method comprises the following steps: performing inter-satellite network addressing; performing user addressing; establishing a first mapping table for determining a partition relationship between an own identifier of a satellite and the ground, and a second mapping table for determining a relationship between the own identifier of the satellite and a ground signal gateway station, and performing location management through the first mapping table and the second mapping table to perform routing forwarding through an inter-satellite network routing table snapshot, and realizing routing according to subnet numbers and host numbers, which are in one-to-one correspondence with IP address configuration and each large area. By adoption of the method, the bandwidth resources of the inter-satellite network and the computing resources of the satellites can besaved, the problem of uneven user density and insufficient address use in the large areas can be solved, the satellite snapshot storage resources are saved, and the completeness of the routing is improved.

A system and method for estimating street parking availability for a user is disclosed. The system comprises a communication module and a parking probability generator. The communication module receives data describing a set of traces for a group of vehicles associated with a group of users. The parking probability generator assigns the set of traces to one or more street segments based at least in part on street segment data describing the one or more street segments. The parking probability generator generates one or more parking probabilities for the one or more street segments based at least in part on one or more user densities in the one or more street segments.

The invention discloses a method for dividing social network groups, which runs in a social network system which is formed by successively connecting a social network service end, a location service interface of a mobile operator, a base station and a mobile terminal by the following stages: the ID of the social network user is bound with the mobile phone number of the mobile terminal, a group is established, users are recommended to join in the group and the self-adaption of the density of group users is adjusted. The social network service end is any social network that can provide a group function. The location service interface of a mobile operator is a location service interface opened to a cooperation partner of a third party by the mobile operator. The base station is a wireless station which can establish a GSM / GPRS / CDMA wireless communication network. The mobile terminal is a piece of wireless equipment which can send wireless signals to and receive wireless signals from the base station, and comprises honeycomb-type telephones and personal digital assistant. The method for dividing social network groups of the invention can effectively distinguish the authenticity of the geography locations of users, is a flexible grouping method, and can automatically adjust the density of users in a group so as to find an optimal grouping standard.

The invention discloses a capacity and coverage combined design method for a TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) cluster system and relates to cluster communication. The technical scheme of the method comprises the following steps of: establishing a corresponding propagation model according to the maximum link loss of links; respectively calculating traffic volume of each cell according to the user density of different service cell types, the average traffic volume of each user and the coverage area of the current base station; estimating service cell radiusaccording to traffic volume and a communication satisfaction degree threshold and calculating the interference limited capacity of each service cell; checking whether or not the interference limited capacity of base stations in the cells meets the capacity requirement of coverage areas of the base stations in the cells one by one; and if not, performing a capacity expansion technology till the capacity requirement of the coverage areas can be met, and then determining the number of channels. The method can be applied to the plan and optimization of a TD-SCDMA cluster network.

The invention discloses a hotspot base station setting method capable of enabling hotspots to cover a network cell, the cell comprises a central macro base station and at least one hotspot base station distributed in the cell, and the setting method comprises the following steps: S1) getting the range of a hotspot region, the user density of the hotspot region, the user density of a macro cell and various parameters including various large-scale fading parameters of users to the central macro base station and the hotspot base station respectively; S2) respectively getting area functions of two edge regions formed under the hotspot base station and the macro base station structures according to the various parameters of the macro cell, the hotspot region, the macro base station and the hotspot base station; and S3) combining with the areas of the two edge regions in the step S2) and the user density corresponding to each of the two edge regions according to the system requirements for setting the hotspot base station. By adopting the setting method, the loads of the hotspot region and the macro cell can be effectively balanced, the utilization rate of edge frequency spectrum of a network can be improved, the complexity is low and the practicability is stronger.

The invention discloses a distributed management method for direct connection communication users in a cellular network and relates to the field of communication. Distributed resource allocation and power control can be achieved according to auxiliary information broadcasted by a base station and interference cognitive competence of a client, so that a great deal of information feedback and computation complexity required by central station control can be effectively reduced on the basis of achieving high performance. The distributed management method comprises completing access of direct connection communication users and clustering according to geographical locations in initial phase; performing time domain hash based on density of the direct connection communication users in a cluster to control and schedule density of users after clustering; subjecting scheduled direct connection communication users to Initialization and modification of candidate channels through interference cognition under assistance of the base station; performing channel (frequency domain) hash on direct connection communication users in every cluster and enabling that different direct connection communication users can be hashed in different channels as possible; and performing power adjustment on the direct connection communication users under assistance of the base station after the channels are determined.

The invention discloses an interference management mechanism based on partial frequency reuse and power control. The interference management mechanism based on partial frequency reuse and power control is suitable for a WLAN network which is deployed densely and based on IEEE802.11ac. Users in a cell are divided into cell central users and cell peripheral users according to the distance from each user to a service AP, and after a wireless communication channel is cut into orthogonal sub-channels, channel distribution is carried out based on the principle that channels of peripheral users of adjacent cells are not overlapped to eliminate co-channel interference among the cells. On the basis, the mechanism can divide the cells dynamically according to the density of the users in the cells, adjusts the emission power while adjusting channel distribution, and guarantees reasonable configuration of wireless resources. The interference management mechanism based on partial frequency reuse and power control can effectively lower co-channel interference among the cells, improve the handling capacity of the network, and meanwhile lower energy consumption.

The invention belongs to the technical field of communication, and particularly relates to an NOMA physical layer security transmission method of a heterogeneous network. The implementation process isas follows: for each legitimate user of the heterogeneous network using the non-orthogonal multiple access NOMA technology, the NOMA is configured to serve a signal power coefficient of each legitimate user, a zero-space artificial noise distribution coefficient is configured according to the position distribution of the legitimate user, and NOMA physical layer security transmission of the heterogeneous network based on the configured signal power coefficient and the zero-space artificial noise distribution coefficient is performed. According to the NOMA physical layer security transmission method provided by the invention, by reasonably configuring the artificial noise and enhancing the resistance to passive eavesdropping when the eavesdropping channel quality of the system is better than the legal user channel quality, the physical layer security performance of NOMA wireless transmission in the heterogeneous network is improved, the ability of the NOMA system to resist potential silent eavesdropping is enhanced, particular when the eavesdropping channel quality is better than the channel quality of the legitimate user, the physical layer security performance of the system is improved, and the NOMA physical layer security transmission method can be used for the security transmission in mobile communication systems with high user density, such as heterogeneous cellular networks.

A system and method for network driven automatic adaptive rendering impedance are presented. Embodiments of the present invention are operable to dynamically throttle the frame rate associated with an application using a server based graphics processor based on determined communication network conditions between a server based application and a remote server. Embodiments of the present invention are operable to monitor network conditions between the server and the client using a network monitoring module and correspondingly adjust the frame rate for a graphics processor used by an application through the use of a throttling signal in response to the determined network conditions. By throttling the application in the manner described by embodiments of the present invention, power resources of the server may be conserved, computational efficiency of the server may be promoted and user density of the server may be increased.

The embodiment of the invention provides a method and a device for optimizing an antenna azimuth angle, relates to the technical field of communication, and solves the problem that in the prior art,when the antenna azimuth angle is optimized, the operation and maintenance cost is high due to the fact that the coverage direction is analyzed by relying on drive test data or statistical data in combination with a map, or the coverage angle is explored on site, or a user complaint position is used for coverage adjustment. The method comprises the following steps: acquiring a first longitude coordinate and a first latitude coordinate reported by each user in an appointed communication cell within a preset time period; Determining the user density, the azimuth angle and the linear distance ofeach service point according to the longitude coordinates and the latitude coordinates reported by each user in the preset time period; And determining the optimized antenna azimuth angle of the specified communication cell according to the user density, the azimuth angle and the linear distance of each service point.

The invention discloses a DMRS configuring method and device in V2X communication. The DMRS configuring method comprises the steps that four different users are distinguished in a time domain by usingan orthogonal mask of OCC=4; and / or, N1 different users are distinguished in a frequency domain by using an orthogonal mask of OCC=N1; and / or, a demodulation reference signal base sequence with low correlation is used on the same extension bandwidth, or different cyclic shifts of the same DMRS base sequence are used to increase the number of differentiable users of DMRS to accommodate the problemof large user density in V2X communication; and when relevant parameters of DMRS are selected, the orthogonality of DMRS symbols among users can be improved according to known information.

The invention discloses a modeling method used for a behavior of a wireless network user, which includes the following steps: 1. all kinds of models of mobile users, wireless service, wireless switch-in terminal and wireless bearing models are defined; 2. a specific area and known conditions that are needed to define the networks are chosen to form a picture layer of the users distribution; 3. the operation of Step 2 is repeated and a plurality of arbitrary user distribution picture layers are built by selecting proper mode according to the requirements; 4. an operating order and an operation way of each user picture is set; 5. according to the service use proposal formed in Step 4, a density picture of the user distribution is formed; 6. according to the service use proposal formed in Step 4 and the user density picture formed in Step 5, a wireless network user in the area is formed. The invention is characterized by rich functions and large flexibility, defining precisely the user distribution and service demand of the wireless network, which is a scientific, high-effective and flexible defining method of the network demand.

The invention discloses a device and a method for diversity reception and transmission of TD-SCDMA mobile communication systems in a wireless base station which uses two antennas and an RF transceiver connected. The installation space of the antennas is at least dozens of working wavelengths. The invention solves the problems of poor relativity formed by the antennas and the RF transceiver connected, difference of time delay and phase of signals received by 2 completely irrelevant links of a transceiving link and a user terminal. The invention solves the problem of low user density of rural and suburban districts which need big area coverage radius. The cost of each base station may be reduced by more than 20%.

The invention relates to a cell interrupt detecting method based on a neighbor cell reference signal receiving power list and belongs to the technical field of wireless communication. The method comprises the steps that an RSRP list, which can be used for balancing detecting performance and detecting delaying time, of a neighbor cell is established, and distributed type triggering and concentrated judging are used. According to the designed neighbor cell RSRP list, a concentrated large-amount-information collecting process is avoided, signaling overhead in a detecting process can be greatly reduced, and meanwhile detecting performance and detecting delaying time can be well balanced under the situation that user density is very low and channel transmission conditions are very bad. Meanwhile, the cell interrupt detecting method can be used as reference of intensively-deployed Small Cell interrupt detecting in a heterogeneous network.

The invention provides an unmanned aerial vehicle cooperation and trajectory optimization method for throughput improvement. The unmanned aerial vehicle cooperation and trajectory optimization methodis used for optimizing resource allocation of an unmanned aerial vehicle auxiliary cellular network. According to the method, one unmanned aerial vehicle flies periodically in the edge area of the cell, communication service is provided for users in the edge area of the cell, and the bandwidth allocation proportion of the unmanned aerial vehicle and the base stations, the service coverage radius of each base station and the flight path of the unmanned aerial vehicle are established and jointly optimized; and a target function for maximizing the minimum average throughput of the users in the edge area is decoupled into three sub-problems to be solved, so that a resource allocation result and an unmanned aerial vehicle flight path which meet requirements are obtained. According to the invention, the unmanned aerial vehicle trajectory can be adjusted according to the user density of each cell, balanced assistance for multiple cells is realized, the service quality of cells with dense users is improved, and the resource utilization efficiency is improved.

Embodiments of the invention provide a wireless signal transmission method and an AP (access point). The method comprises the steps as follows: extracting signals of the working channel of a first wireless chip among wireless chips, and filtering interference signals of the working channel; adjusting the signal attenuation value according to the information between the first wireless chip and the other wireless chips or the information of a client; and processing the extracted signals according to the signal attenuation value. According to the wireless signal transmission method and the AP provided by the embodiments of the invention, multiple wireless chips working on different channels can be integrated in the same AP to provide high capacity, so that wireless service can be provided for a scene with high user density, and multiband wireless signal transmission is realized. Moreover, the signal attenuation value is adjusted according to the information between the wireless chips or the information of the client, the power of the signals is adjusted according to the signal attenuation value, and therefore, mutual interference between the wireless chips is reduced, and the performance of the wireless network is improved.

The invention discloses a community swimming pool intelligent monitoring system. The system collects video images of a swimming pool through a monitoring device installed in a community swimming poolvenue, analyzes the user density of the swimming pool according to the collected images to obtain user density data, and sends the user density data and the collected video images to a server in realtime, and the server sends the video images and the user density data to a user terminal currently registered on the server in real time; through the system, it is possible for a user to obtain the situation in the community swimming pool through the terminal, thereby deciding whether to go swimming in the swimming pool, and the convenient operation mode makes the living of community owners more comfortable and improves the satisfaction of the owners on the community service.

Techniques for configuring a wireless network cloud system comprise the following steps. A density metric is estimated corresponding to at least one given coverage area of a wireless network cloud system. A configuration is determined for one or more network-access components in the given coverage area of the wireless network cloud system in response to the estimated density metric. The determined configuration may then be applied to the one or more network-access components. The density metric may correspond to a user density and / or a traffic density in the given coverage area.

The present invention discloses an urban population distribution dynamic perception method based on mobile phone data. A mobile phone user's home district is predicated based on mobile phone data, linear regression is employed to represent the relation equation of the population density and the number of the mobile phone users, and the undetermined property value in the regression equation is calibrated to obtain the associated relation between the representation area population density and the area mobile phone user density so as to complete the population distribution perception. The urban population distribution dynamic perception method based on mobile phone data is simple to enforce and low in cost, and more facilitate development at scanty remote regions about other data information; and the mobile data timeliness is high, the urban population distribution dynamic perception method can dynamically perception the urban population distribution compared to a traditional population distribution perception method and provide the basis for the research in the correlated direction such as urban control and urban population flow prediction, etc.

The present invention discloses a user packet method based on density in a large-scale MIMO system downlink. The method comprises the following steps: the step 1, calculating a distance among all the users, and obtaining a distance matrix; the step 2, obtaining a k-dist graph according to the distance matrix, and obtaining two important parameters, consisting of a radius and a minimum user quantity threshold, of a DBSCAN algorithm according to the user density distribution information included in the graph; and the step 3, starting clustering from any one user after obtaining the two important parameters, and obtaining a final user packet result. According to the technical scheme, an appropriate inter-user distance measurement mode is found, a clustering based on the density is employed and the user density distribution information is employed to divide all the users in a district into several groups so as to greatly improve the system rate.

The invention relates to the technical field of a fusion satellite-ground system, and specifically relates to a fusion satellite-ground system frequency sharing method and system based on dynamic spectrum allocation. The fusion satellite-ground system frequency sharing method and system based on dynamic spectrum allocation solves the defects that a current frequency sharing technology of the fusion satellite-ground system needs to maintain the active user intensity to be relatively lower and has very strong constrained conditions for the fusion satellite-ground system. The fusion satellite-ground system frequency sharing method based on dynamic spectrum allocation includes the steps: dividing the total frequency resource into 9 segments of frequency resources from F1 to F9; dividing areas for the satellite wave beam, wherein each divided area is corresponding to one of the 9 frequency resources from F1 to F9; and according to the preset rules, allocating one group of three groups of frequency ranges: F1 to F3, F4 to F6 and F7 to F9, for each ground cell, and randomly selecting mutually nonredundant physical resource blocks in each group and distributing the mutually nonredundant physical resource blocks in each group to the user. The fusion satellite-ground system frequency sharing method and system based on dynamic spectrum allocation are suitable for the fusion satellite-ground system.

The invention is suitable for the technical field of air conditioners, and provides a control method of an air conditioner and the air conditioner. The control method of the air conditioner comprisesthe following steps: environmental parameters of acting space of the air conditioner are obtained; an outdoor temperature, an average body surface temperature and a present number are introduced intoan air conditioner output power conversion model to determine an output power of the air conditioner; a ratio among all user densities is calculated, and the stop time of swing blades at each swing angle is determined based on the ratio; and the air conditioner is controlled to operate according to the output power and the stop time. The control method of the air conditioner needs no manual adjustment by users, can allocate proper operation parameters according to present environment, reduces unnecessary energy consumption, and achieves the purpose of energy conservation.

The embodiment of the invention provides a base station site selection method and device for a capacity expansion cell, equipment and a storage medium. The method comprises the following steps: acquiring grids occupied by a target capacity expansion cell; determining user density data in each first grid in the target capacity expansion cell and an augmented distance factor corresponding to each first grid; calculating a convergence distance between any two first grids according to the user density data and the augmented distance factor; clustering the first grids according to the convergence distance between any two first grids so as to determine a target area in the target capacity expansion cell; calculating a site selection index value corresponding to each second grid in the target area; and determining site selection information of the base station according to the site selection index value. According to the method and the device, the determined site selection information of thebase station completely meets the requirement of the capacity expansion cell on the site selection of the base station, the site selection of the base station is accurately determined, and the site selection of the base station is automatically completed without field survey of engineers, so that the time period of site selection is shortened, and the efficiency of site selection of the base station is improved.

The invention discloses a dynamic spectrum sharing method based on user online learning and low-overhead cooperation, and belongs to the technical field of electromagnetic spectrums. The method comprises the following steps of: enabling a secondary user to acquire frequency spectrum sharing scene information and requirement parameters; then initializing a state parameter and a spectrum sensing parameter of a channel; then, at the beginning of each time slot, enabling the secondary user to judge whether a direct transmission condition is met or not according to the transmission condition of theprevious time slot, selecting to directly continue transmission on the channel of the previous time slot or acquire idle channel transmission according to the channel state and spectrum sensing, andupdate the state parameter and spectrum sensing parameter of the channel; and finally, enabling the secondary user base station to perform conflict coordination according to the channel occupancy condition every a fixed number of time slots. According to the invention, through learning the channel state and the transmission condition by the secondary user, low-overhead and efficient spectrum sharing is realized, the spectrum utilization rate in a high user density and dynamic spectrum environment can be effectively improved, and efficient spectrum sharing is realized.

A system and method for estimating street parking availability for a user is disclosed. The system comprises a communication module and a parking probability generator. The communication module receives data describing a set of traces for a group of vehicles associated with a group of users. The parking probability generator assigns the set of traces to one or more street segments based at least in part on street segment data describing the one or more street segments. The parking probability generator generates one or more parking probabilities for the one or more street segments based at least in part on one or more user densities in the one or more street segments.

An embodiment of the invention provides a user trajectory prediction method and system based on density clustering. The user trajectory prediction method comprises the step of: collecting MDT measurement data of a plurality of users in a target geographic region in each preset time period, and determining a moving point set of the plurality of users in the preset time period according to the MDT measurement data; clustering moving points in the moving point set in the preset time period by adopting a density clustering algorithm to form a plurality of track clusters; calculating a track pointof each track cluster, an influence area of each track cluster and the prediction probability of each track point, wherein the central point of each track cluster is taken as the track point; generating a track point sequence for each track point according to a time sequence, and acquiring a user track prediction model by utilizing the track point sequence; and predicting a user trajectory in thetarget geographic area by using the user trajectory prediction model. According to the user trajectory prediction method and the device provided by the embodiment of the invention, the problem of lowanalysis efficiency caused by analyzing the change rule of the user density degree by using the scene special effect in the prior art can be solved.

The invention relates to a mobile high-altitude communication platform adaptive coverage optimization method based on perception, and the method comprises the following steps of S1, enabling a mobilebase station to collect a reference signal sent by a ground user, and obtaining a ground user coordinate; S2, enabling the mobile base station to obtain the current position according to a built-in positioning device, and calculate the user density according to the collected user coordinates; S3, comparing the typical values of the scene types in a database according to the user density, and determining the scene types; S4, acquiring the information data of an adjacent mobile base station; and S5, adjusting the dynamic beam according to the obtained scene type and the information data of the adjacent mobile base station. According to the invention, the wave beam is adaptively selected through a plurality of types of perception information, so that the adaptive coverage is realized, and theredundant coverage or coverage holes of the mobile HAP caused by the ground scene change and the user distribution change can be better improved.

Systems and methods for identifying user density from network data are included herein. Embodiments include a communication tower that allocates communication bandwidth to devices in an area within range of the communication tower. The communication tower can calculate the user density in the area based on the allocation of bandwidth. Further, the types of data and messages exchanged with the devices can indicate the type of device, which can be used to group the devices based on type that are likely associated with a single user. For example, a single user may have a mobile phone, a tablet, and a smartwatch. Additionally, speed of devices can indicate which users are pedestrians. This information can be included in user density information and provided to devices or users to improve public safety, device response to high traffic areas, and so forth.