45results about How to "Improve network service quality" patented technology

The invention discloses a mobile network intelligent roaming selection method. The method comprises the following steps in order: step one, emptying a PLMN list, scanning all operator networks surrounding the current environment, acquiring signal intensity of each operator network, and updating the signal intensity of each operator network to the PLMN list; step two, selecting the operator networkwith the best signal intensity in the PLMN list to establish the network connection; step three, periodically checking the network quality of service of the operator network in current use; step four, judging whether a switchable operator network is existent in the PLMN list, if the switchable operator network is existent in the PLMN list, performing step two and forbidding the operator network before switching in the PLMN list, or performing the step one; and step five, continuously using the currently used operator network and performing the step three. By scanning the operator informationin the current environment through the background, the network state and like data are acquired, thereby selecting and switching to the optimal network according to the above state data.

The present invention discloses a network security HTTP negotiation method and related devices. the method comprises: a server receiving an HTTP request message with a header field sent by a terminal, wherein the header field indicates security mechanism(s) supported by the terminal, or the security mechanism(s) supported by the terminal and indication parameter(s) which show that the terminal has been in an accessing safety state; the server parsing the HTTP request message, and sending a response message with negotiated security mechanism(s) supported by the server and priority parameter(s) thereof to the terminal according to the result of the parsing if the header field of the request message indicates the security mechanism(s) supported by the terminal; and the server receiving another HTTP request message sent by the terminal again to authenticate security mechanism(s) selected by the terminal, wherein the header field of the request message indicates the security mechanism(s) selected by the terminal according to the response message and the priority parameter(s) of the security mechanism(s). The invention expands the HTTP protocol, solves the problem that the terminal security mechanisms are difficult to be deployed, and improves the network service quality.

The invention discloses a method for scanning wireless networks, and a device for realizing thereof. The method comprises: an AP (access point) establishing a scan table item of an STA (station) when receiving a scanning message sent by the STA for the first time, responding a scan responding message to the STA; the scan table item being used for recording STA identification information, a receipt time T of the scanning message responded at a last time, and a scanning time interval [delta]T of the STA; and when the AP subsequentially receiving a scanning message sent by the STA, determining a time when the scanning message is received at present, and determining whether the T and the [delta]T recorded in the scan table item satisfy preset inhibiting response conditions, if satisfy, not responding to the scanning message which is received at present, otherwise, sending the scan responding message to the STA, and meanwhile updating the T in the scan table item of the STA. A channel of the AP receiving the scanning message is a working channel of the AP, or any channel overlapped with the working channel of the AP. With the method and the device, unwanted vent resource waste can be prevented.

The present invention discloses a network security HTTP negotiation method and related devices. the method comprises: a server receiving an HTTP request message with a header field sent by a terminal, wherein the header field indicates security mechanism(s) supported by the terminal, or the security mechanism(s) supported by the terminal and indication parameter(s) which show that the terminal has been in an accessing safety state; the server parsing the HTTP request message, and sending a response message with negotiated security mechanism(s) supported by the server and priority parameter(s) thereof to the terminal according to the result of the parsing if the header field of the request message indicates the security mechanism(s) supported by the terminal; and the server receiving another HTTP request message sent by the terminal again to authenticate security mechanism(s) selected by the terminal, wherein the header field of the request message indicates the security mechanism(s) selected by the terminal according to the response message and the priority parameter(s) of the security mechanism(s). The invention expands the HTTP protocol, solves the problem that the terminal security mechanisms are difficult to be deployed, and improves the network service quality.

The invention relates to a survival time optimization method of a wireless sensor network, and belongs to the technical field of communication. The method comprises the following steps: researching the energy consumption problem of wireless sensor network nodes, considering the characteristic of unbalanced energy consumption among initial energy of a sensor, a wireless communication channel and node communication, establishing a constraint conforming to an actual wireless sensor network environment, introducing a circular ring energy consumption rate to describe the energy consumption speed of the nodes in a circular ring, and restraining the number of nodes in the circular ring, so the energy consumption rates corresponding to the circular ring tend to be consistent; defining the survival time of the nodes as the ratio of the initial energy of the nodes to the energy consumption per unit time, and establishing a network survival time optimization model; fusing DY(Dai-Yuan) and LS(Liu-Storey) to improve conjugate gradient parameters, adopting a strong Wlofe imprecise descent criterion for the step length, and then providing a method for providing the optimal survival time based on the fused conjugate gradient. Convergence analysis and simulation results show that the method has good convergence and can effectively control the communication rate between the sensors, so that the survival time of the wireless sensor network is effectively prolonged.

A method for communication based on mobility evaluation in a wireless communication system is provided. The method includes: receiving evaluation basis information from a network, the evaluation basis information basis information comprising an offset value for mobility evaluation and a domain condition; determining whether the domain condition is satisfied; performing the mobility evaluation for at least one neighbor cell based on the offset value, if the domain condition is satisfied; and selecting a cell among the at least one neighbor cell as a mobility target cell, if a result of the mobility evaluation satisfies a predetermined criterion.

The invention discloses a method and a device for analysis of network service quality. The method includes: building a network service quality evaluation model of a network system in a network management system in advance, and further configuring resources needing to be monitored in the evaluation model; obtaining scores and grades of the network service quality by periodically acquiring performance data of the resources configured in the evaluation model and according to computation rules defined in the evaluation model; and generating a network service quality report and sending warning messages according to preset policy rules, so that network management staff can purposefully improve network configuration, and network service quality requirements are met.

The invention discloses an antenna downward inclination angle determination method and device based on a geographic information system (GIS). The method comprises the following steps: determining an equivalent coverage radius of a cell of each base station according to base station location information in the GIS and the Thiessen polygon principle and determining a maximum coverage radius of the cell of each base station according to an application scene which the cell of each base station is located in; when the equivalent coverage radius is ascertained to be smaller than or equal to the maximum coverage radius, determining the antenna downward inclination angle of the base station which the cell belongs to based on the equivalent coverage radius; and when the equivalent coverage radius is ascertained to be larger than the maximum coverage radius, determining the antenna downward inclination angle of the base station which the cell belongs to based on the maximum coverage radius. According to the technical scheme of the antenna downward inclination angle determination method and device based on the GIS, the problems, that handling capacity in a border cell is reduced and a resource usage ratio is low, caused by unreasonable arrangement of the antenna downward inclination angle of the base station in same-frequency networking in a time division-long term evolution (TD-LTE) system can be avoided, same and adjacent channel interference among cells can be reduced effectively and network service quality and user experience effects are improved.

The present invention provides a single-interface multi-channel switching method for a vehicle-mounted ad hoc network. The nodes are divided into three working modes of α, β and γ according to the node density and service information flow. According to the characteristics of different working modes, different data transmission methods are adopted. mode, under the condition of ensuring the reliable transmission of safety information, the service channel is dynamically allocated, the number of channel switching is reduced as much as possible, and the utilization rate of the service channel is improved.

The invention discloses a method for reducing communication loads and the energy consumption of a data center. The method includes enabling a dispatching center to compute an initial placement sequence of virtual machines according to an expenditure matrix and a service demand matrix; configuring service communication data to corresponding switchboards and links according to bandwidth constraint conditions and acquiring an initial service routing information table; judging whether an execution communication duration of a task carried by a current virtual machine exceeds a communication duration threshold value or not, and migrating the current virtual machine into a target physical machine logically closest to a target virtual machine if the execution communication duration of the task carried by the current virtual machine exceeds the communication duration threshold value; enabling the dispatching center to judge whether all the virtual machines carried with tasks with execution communication durations exceeding the communication duration threshold value are migrated or not, enabling the dispatching center to update the initial placement sequence of the virtual machines and the initial service routing information table if all the virtual machines carried with the tasks with the execution communication durations exceeding the communication duration threshold value are migrated, and closing the switchboards which are not used by the data center. The method has the advantages that network information dynamic perception and feedback regulation functions can be realized, services with the communication durations exceeding the duration threshold value are reasonably distributed, the usage amount of the switchboards is reduced, and the purpose of saving energy for the data center is achieved.

The invention discloses a method for uniquely identifying user equipment, comprising: collecting user equipment information including a plurality of equipment attributes generated when user equipment accesses network services, and associating and storing each user equipment information with a corresponding user equipment identifier It is a record in the sample library; compare every two pieces of user equipment information in the sample library, and calculate the standard likelihood of the same and different attributes of each equipment when the user equipment identifiers are the same; obtain the two user equipment to be identified Device information, compare each device attribute of the two pieces of device information, obtain the standard likelihood corresponding to each device attribute according to the comparison result, and multiply all the standard likelihoods to obtain that the two user device information belong to the same user device The predicted probability; by comparing the predicted probability with a probability threshold to identify whether the two pieces of user equipment information belong to the same user equipment. The invention also discloses a device for identifying the uniqueness of the corresponding user equipment and a computing device.

The invention discloses a connection switching method of multimode multi-standby handheld mobile terminal service under a connection state, which mainly solves the problems in the prior art the shortage of judging method for starting a new connection construction flow in advance for a network switching method results in the user service interruption when the connection is switched and the user experience and the network service quality are seriously influenced. The connection switching method of the multimode multi-standby handheld mobile terminal service under the connection state comprises following steps that a service connection state switching device acquires current remote access Trojan (RAT) of a mobile terminal and can detect a signal-to-noise ratio of other base stations of the RAT, whether a new RAT connection construction flow is started or not is calculated and determined, and relevant connection operation is conducted if new RAT connection construction flow needs to be started. Through the scheme, a purpose for improving the user experience and the network service quality can be realized, and high practical value and high popularization value can be realized.