192results about How to "Achieve backward compatibility" patented technology

A communication system that includes a supervisory node (e.g., a headend) and one or more remote nodes (e.g., cable modems). Packets are transmitted between the supervisory node and the one or more remote nodes via RF channels. A plurality of the RF channels are bonded, such that packets may be transmitted via any one or more of the RF channels that are bonded. Bonding may include higher-layer bonding and/or lower-layer bonding. In higher-layer bonding, the communication system further includes a forwarder and a plurality of edge modulators. Each edge modulator is connected to a different RF channel or group of RF channels. The forwarder determines to which edge modulator one or more packets or flows are to be transmitted. In lower-layer bonding, a packet is split into pieces. The pieces are assigned to respective RF channels that are associated with an edge modulator for transmission to a remote node.

Memory address space is divided into domains and instruction access control circuitry is used to detect when the memory address from which an instruction to be executed is fetched has crossed a domain boundary and changed and in such cases to conduct a check to ensure that the instruction within the new domain is a permitted instruction of a permitted form. The permitted instruction can be arranged to be a no operation instruction other than in respect of the instruction access control circuitry, in order to assist backward compatibility.

A system that automatically obtains Web page-specific scripts to save and restore the state of a Web page. When a user bookmarks or copies a Web page URL to the clipboard, a function is called to create a page state file that is stored together with the current URL to create a bookmark. When the bookmark is loaded or pasted into the location bar of the Web browser, the system reads the URL and page state file, and loads but does not yet display the Web page indicated by the URL of the bookmark. The system then locates the Restore Page State function in the loaded Web page's script, and executes the Restore Page State function on the page state file, resulting in modification to the DOM (Document Object Model) representation of the Web page and display of the Web page to the user based on the modified DOM.

Three dimensional image data is provided which includes data representing a first image which specifically may be a background image. A mixed image which is a combination of the first image and a second image which specifically may be a foreground image, a transparency map related to the mixed image comprising transparency values for pixels of the mixed image and a depth indication map for the mixed image comprising depth indication values for pixels of the mixed image. The use of a mixed image may allow three dimensional processing while at the same time allowing 2D backwards compatibility. Image quality around image objects may be improved by modifying transparency values in response to depth indication values and/or depth indication values in response to transparency values. Specifically, an improved alignment of transitions of depth indication values and transparency values may provide improved three dimensional foreground image object edge data.

The invention provides a method for configuring sounding reference signals (SRS), which comprises the following steps: for each kind of configuration of subframe configuration parameters of the SRS, determining configuration orthogonal to the configuration; grouping all configuration of the subframe configuration parameters of the SRS to obtain three groups of configuration; according to a rule that each cell and adjacent cells belong to different types of cells, dividing all cells into three types, and corresponding the three types of cells to the three groups of configuration of the subframe configuration parameters of the SRS one by one; for each cell, according to number and moving speeds of UE and a rule that orthogonal configuration of the subframe configuration parameters of the SRS in adjacent cells is selected in priority, selecting one kind of configuration from a group of configuration of the subframe configuration parameters of the SRS corresponding to the cell to configure the subframe configuration parameters of the SRS of the cell; and setting subframes of the SRS occupied by the UE in various cells according to the subframe configuration parameters of the SRS of the cell. The method can effectively reduce SRS interference between CoMP cells, and has good compatibility for the conventional system simultaneously.

A pair scheduling medium access control method used in a wireless network, comprises the steps of: checking, by a receiving node, whether a transmitting node has data packets to be subsequently sent, according to data packets received from the transmitting node; when the transmitting node has no data packets to be subsequently sent, checking whether the receiving node has data packets to be sent to the transmitting node or not; if the receiving node has data packets to be sent to the transmitting node, then adding a time period required for sending the data packets of the receiving node into an acknowledgement packet to be sent to the transmitting node; after the receiving node receives a Clear to Send packet sent from the transmitting node, sending the data packets in the receiving node to the transmitting node.

The invention discloses a system for achieving network backward compatibility, which comprises a policy and charging rule function entity PCRF, a home subscriber server HSS, an evolved mobile switch center EMSC and an evolved media gateway EMGW. The invention also discloses an adhesion method, which comprises the following steps: transmitting an adhesion request message by a UE to a target MME, and transmitting an updated position confirmation message to the target MME by the HHS after the target MME executes authorization and position updating according to the service state of the UE; acquiring the address information of a target eMSC by the UE, and initially adhering on the target eMSC; and updating a tracking region and the position of the UE if the MME and the eMSC for providing the service change, and reattaching to a new target MME and a new eMSC. The invention also discloses a de-adhesion method. According to the invention, circuit domain service can be continuously used in an evolved network, and backward compatibility can be achieved, thereby maximally utilizing entities in the conventional circuit domain, ensuring smooth transition of system upgrading and protecting the present investment of operators.

A cellular communication system comprises a core network, a first access network not supporting circuit switched services and a second access network supporting circuit switched services. A user equipment detects that an application using circuit switched communication is initiated and accordingly initiates a reselection from the first to the second access network. The user equipment transmits a location update message to a circuit switch mobile switching centre of the core network which in response notifies a mobility management entity for the first access network that the access network reselection has been initiated. In response to the notification the mobility management entity initiates a change of a routing association from being with the first access network to being with the second access network. The invention may e.g. allow improved circuit switched fallback for a 3^rd Generation Partnership Project cellular communication system comprising an access network supporting only packet switched services.

A Mobile Agent (MA), a Radio Access Network (RAN), and a network adaptation method are disclosed herein. The MA is connected to an access layer of an air interface protocol stack for a first network and an access layer of a Core Network (CN) interface protocol stack for a second network to adapt and forward signaling messages and data sent by a Mobile Station (MS) of the first network and a CN of the second network. In the network evolution process, the MA achieves backward compatibility of the MS and the network, and enables smooth evolution.

This invention discloses a beeping method among different access systems, in which, a user side GW judges if a UE is at 3GPP equal connection state or 3GPP equal idle state by signaling interaction with a control side GW, when the UE is at the connection state, the user side GW sends down data packets via the existing user side connection, when the UE is at the idle state, the user side GW carries out broadfield beeping to UE at the idle state among different access systems to set up user side connection and transmit the down data packets.

System and method to extend the data carrying capacity of a hybrid fiber cable (HFC) network by adding wideband RF signal capability above 1 GHz, and replacing at least some CATV active devices such as amplifiers with a new type of Coax Domain Node (CDN) device that acts to segment the CATV cable portion of the HFC network into a series of smaller domains. The CDN generally filter RF signals from 5-865 MHz, while amplifying and passing RF signals over 1 GHz. Upstream capability is enhanced because the CDN intercept 5-42 MHz upstream signals from each domain and convert to 1 GHz+ signals. Downstream capability is also enhanced because the CDN can take efficiently encoded 1 GHz+ digital data, QAM modulate it, and locally inject into each domain without crosstalk between domains. The system pushes data management and downstream from the head end to the CDN, creating more throughput.

The invention relates to a method of selecting an access point in a wireless network including the steps of that a wireless terminal carries out channel scan on a channel k in the wireless network, receives channel information sent out from the access point and takes out the channel utility ratio uk; confirms the maximum data transmission rate vk that can be supported by the current channel according to the received channel information; counts the channel acquisition probability rk in a scanning time space and calculates a hidden terminal influence factor fk according to the channel utility ratio uk, the maximum data transmission rate vk and the channel acquisition probability rk; carries out the processes on all the channels that can be accessed by the wireless terminal repeatedly, selects an access point AP corresponding to the minimum value of f that are calculated and adds in the basic operation group that the selected access point lies in.

The invention relates to a componential realizing method for a communication protocol. It defines the uniform interface standard, determines the componential mode, component developing platform, submits the component bank storage, improves the operation system and acquires the running supports. It has advantage to realize the reasonable package to the communication protocol, optimizes the reasonable call to the service realized by the protocol, and maintains excellent backwards compatibility. The componential communication protocol realizes the dynamic load of protocol, supports the repeatability and height configurability of the component, it has a short developing period, excellent transplantation. It is convenient to the assembly of protocol. It replaces the different protocol components through loading, provides each kind of network service function, service quality, especially suitable for the spot which is strict with the real-time, error tolerance and continuity.

The existing technology focuses on the case of the same timing advance (TA) in carrier aggregation, not supporting randomly accessing a SCell in the multi-TA carrier aggregation. The invention provides a method of randomly accessing a SCell and receiving data. For a procedure of randomly accessing a secondary cell (SCell), the UE has accessed a primary cell (PCell), the PCell and the SCell belong to different timing advance groups, the first cell transmits (A, A′, B) a random access command to the UE, the command is used for instructing the UE to access the SCell; According to the random access command, the UE transmits (C) a random access preamble to the SCell. Preferably, the first cell comprises another cell which cross-carrier schedules the SCell or the SCell. The invention provides a technical solution of randomly accessing a SCell in a multi-TA scenario, which fills the gaps in the existing technology.

The invention provides a method for accessing a mobile communication system. The method includes steps of enabling 3GPP UE (3rd generation partnership project user equipment) connected with non-3GPP user equipment to initiate an attach request containing a specified APN (access point name) value; establishing a carrying link between the 3GPP UE and a PGW (packet data gateway) after authentication is successfully carried out and transmitting uplink and downlink data of Ethernet data packets of the non-3GPP user equipment via the carrying link. The method has the advantages that relevant 3GPP protocols are extended, so that business for enabling non-3GPP users to access the mobile communication system via a 3GPP network can be supported, a network arrangement scheme of operators can be flexible and convenient, user groups of the operators can be expanded, the non-3GPP users and LTE (long term evolution) users can be managed by the operators in a unified manner, and billing and refined business service can be provided for the non-3GPP users and the LTE users by the operators.

The invention provides a mileage evaluation method for the residual life of a lithium ion battery of an electric vehicle. Historical data of an electric vehicle is collected through a cloud data platform; a data mining method is adopted to analyze the historical driving condition and historical aging path of an electric vehicle, and power battery fault early warning data, a driving condition model, a multi-dimensional coupling equivalent circuit model and a safety risk assessment method are combined to calculate the safe available driving mileage of the electric vehicle; under the condition ofnot additionally adding electric vehicle components, historical data of the electric vehicle is collected in a remote data transmission mode and is stored in the cloud data platform; the historical aging path and the remaining available life of the electric vehicle are analyzed through a data mining method; and the historical driving condition of the electric vehicle are analyzed based on the sampled speed and position information of the electric vehicle, and the current remaining driving mileage can be reasonably evaluated by calculating the available driving mileage of the electric vehicleof which the working condition is set as the historical driving condition of the electric vehicle under the condition of the current remaining available life.

The invention discloses a sensor virtual spreadsheet-based self-descriptive sensing tag system. The system consists of a sensing tag part and a reader-writer part, wherein the sensing tag stores sensor identification data, sensor characteristic data, sensor configuration parameters; all the acquired sensor data adopt a compact structure, and adopts a database table structure to perform description and address indexing; and the reader-writer part provides two templates, namely, one is a compact structure template for spreadsheet data while the other is a coding template of partial data in the virtual spreadsheet, for the analysis of the virtual spreadsheet data. Compared with the prior art, the sensing tag system can solve the problems of the unique identification of the sensor, the characteristic identification of the sensor, the analysis of the sensor sampling data and the like in a process of fusing a radio frequency identification technique and a sensor technique.