35 results about "Cell relay" patented technology

A method and system for capacity and coverage enhancement in wireless networks is provided. Each cell has a base station and in-cell relay stations. The base station includes interference avoidance/averaging mechanism, dynamic resource partitioning mechanism or a combination thereof. The interference avoidance/averaging mechanism dynamically creating a FH pattern based on interference information obtained from its serving cell. The base station may include a scheduler for dynamic resource partitioning mechanism for managing scheduling in the cell.

The invention discloses a method and a device for obtaining channel quality indication information. The method comprises the following steps: a CSI (channel state information) reference resource which is sent by a base station is received by a relay node; a CSI-RS (channel state information-reference signal) corresponding to the CSI reference resource and/or CRS (cell relay service) is measured by the relay node; a CQI (channel quality information) valve corresponding to the CSI reference resource is determined by the relay node according to the measured result; and the condition that a resource element in the CSI reference resource is not occupied by a R-PDCCH (relay-physical downlink control channel) is assumed, or, the condition that the resource element in the CSI reference resource is not configured for the R-PDCCH is assumed, the CQI valve is reported to the base station by the relay node. The problem that the accurate channel quality indication information can not be obtained without considering the existence of the R-PDCCH by the relay node in the existing system, therefore, the system flexibility and performance are reduced is solved by the method, and the effect of obtaining the channel quality indication information accurately and improving the system flexibility and performance are achieved.

A sensing and control apparatus for a battery management system is provided. The sensing and control apparatus includes: a sensing unit and a main control unit. The sensing unit includes: a cell relay of a plurality of cell relays and a voltage detection unit. The cell relay is configured to be coupled to at least one of a plurality of cells. The voltage detection unit is coupled to a cell relay. The voltage detection unit is configured to: receive a reference voltage when each of the plurality of cell relays is turned off; and generate a second voltage by amplifying by a gain a first voltage that corresponds to the reference voltage. The main control unit is configured to calculate a valid gain corresponding to a ratio of the second voltage to the reference voltage when the temperature of the voltage detection unit is within a threshold temperature range.

A battery management system and a driving method thereof. The battery management system manages a plurality of battery cells, and a plurality of cell relays respectively coupled to the plurality of cells. The battery management system includes a voltage detecting unit and an MCU. The voltage detecting unit receives a first voltage corresponding to an input voltage transmitted through a 3-contact relay coupled to a first cell corresponding to the turn-on first cell relay when the first cell relay is turned on, and generating a second voltage corresponding to the first voltage. The MCU calculates an effective gain in correspondence with a ratio of the second voltage to the input voltage and controls a connection of the 3-contact relay.

Systems and methodologies are described that facilitate compressing packet headers for cell relay communications. Since cell relays can support a number of evolved packet system (EPS) bearers over a given dedicated radio bearer (DRB), robust header compression (RoHC) can be multiplexed for communications to/from a given cell relay. Thus, an upstream node compressing one or more packet headers can indicate a RoHC context, which can be represented by a RoHC context identifier in a RoHC header. A receiving entity can decompress the headers based on determining the RoHC context. Alternatively, the RoHC context can be associated with an identifier of a related UE bearer such as a tunnel endpoint identifier (TEID), a relay identifier, and/or the like, that is received in a tunneling protocol header to facilitate packet routing.

Systems and methods are described that facilitate providing relay nodes in wireless networks. In particular, cluster nodes, which can be regular eNBs, can provide wireless network access to the relay nodes over a backhaul link, and the relay nodes can offer access to devices or other relay nodes to expand network coverage and/or provide increased throughput. User equipment (UE) relays can function as UEs according to a cluster node such that UE relays receive network addressing and can tunnel communications through the cluster node using the backhaul link. Cell relays can function as a cell of the cluster node, such that transport layer communications terminate at the cluster node. In this regard, cell relays can define transport layers to use in communicating with the cluster nodes over the backhaul and with other devices over a provided access link.

Systems and methodologies are described that facilitate supporting mobility for UEs and relay eNBs in split-cell relay configurations. Parameters regarding communicating with one or more UEs can be provided to disparate eNBs from a donor eNB to provide mobility for one or more of the UEs or a serving relay eNB. In addition, a donor eNB can request establishment of one or more radio bearers at a target relay eNB for continuing communications with one or more UEs. Moreover, a donor eNB can provide information regarding one or more core network bearers to a target donor eNB to facilitate establishing the core network bearers at the target donor eNB for communicating with the one or more UEs. Furthermore, uplink buffer contents from a relay eNB can be provided to a target donor eNB so communications from the one or more UEs can be continued by the target donor eNB.

Priority cell relay method and communication realize system belong to network transmission technology with definite cell legnth. Cells are designed in different cell transmission priorities according to the special information carried by each cell generated and sent by the source cell send terminal. The network terminal at the network entrance monitors the cell arriving speed of dummy connection and discards priority of the cell arrived at the cell device. Network exchange nexus use preserved network resources to transmit cells within service protocol and remaining resources to transmit cells out of the protocol bandwidth and to identify multiple different cell transmission priorities in one connection. Interests of users and network are taken care of at the same time by flow abase indication.

The invention discloses a precoding method for a joint cell relay in a broadcast channel based on relay cooperation. The method comprises precoding of an information source, relay processing and receiving of information sinks. First, the information source initializes an information source precoding matrix and a relay processing matrix, and then the information source establishes a receiving matrix for each information sink based on the previous two initialized matrixes. Then, the optimized information source precoding matrix and each information sink receiving matrix are presumed to be unchanged, the relay processing matrix is optimized. In a similar way, the optimized information source and the relay processing matrix are presumed to be unchanged, and the receiving matrix of each information sink is optimized. Iteration of the above process goes on until convergence. Finally, the information source transmits the relay processing matrix to the relay and broadcasts the precoding matrix of the information source and the relay processing matrix to an information sink group. By means of the method, a direct link from the information source to the information sink group and a relay link between the information source and the relay and the information sink group are utilized innovatively so that total capacity of a system is improved.

The invention relates to a relay unmanned aerial vehicle flight path planning and user access combined optimization method, which introduces an unmanned aerial vehicle with a storage function as a mobile relay unmanned aerial vehicle, and performs combined optimization on relay unmanned aerial vehicle flight paths in a multi-cell network and access strategies of cell edge users, thereby maximizingthe information transmission rate of the cell edge users. The method comprises the following steps: firstly, constructing an edge user and rate maximization problem, fixing a user access matrix, converting a flight path planning sub-problem into a convex problem through a method of solving upper and lower boundaries through scaling, and solving to obtain an optimal unmanned aerial vehicle flightpath; then, fixing the flight path of the unmanned aerial vehicle, and obtaining an optimal user access matrix by solving a Lagrangian pair-occasional function; and finally, iterating the above stepsto alternately optimize the flight path of the unmanned aerial vehicle and the user access matrix until the iterative algorithm converges. According to the method, optimization of the flight path of the unmanned aerial vehicle and user access in the multi-cell relay network is comprehensively considered, and the information transmission rate of multi-cell edge users in the wireless communication network is effectively improved.

The invention discloses a fairness improvement method for load balancing of an inter-cell relay cellular network. An overloaded cellular cell, a sharing relay station and surrounding adjacent cellular cells constitute a resource allocation and communication transmission system structure; load transferring is realized through an inter-cell relay model combining frequency spectrum division with time slot division, sub-carriers are reallocated through a distance weight based scheduling scheme, and the optimal covering radius of each relay is determined according to different loads of adjacent cells. In the cellular cell system, the scheme that a model based on frequency spectrum division and time slot division is arranged between two adjacent cells for relay sharing and load balancing is adopted, the distance weight based subcarrier reallocation algorithm and the inter-cell relay covering radium optimizing scheme are designed on the basis, and the resource utilization rate of a cell system and the overall user fairness of the cellular cell system can be improved.

Systems and methodologies are described that facilitate mapping multiple evolved packet system (EPS) bearers to a single relay eNB radio bearer. In particular, an upstream eNB can select a radio bearer of a downstream eNB for association to an EPS bearer; the selection can be based on a best effort match or substantially any logic. The upstream eNB can store an association between the radio bearer and EPS bearer for subsequent downstream packet routing. The upstream eNB can also provide an indication of the selected radio bearer to the downstream relay eNB to facilitate upstream packet routing therefrom. The upstream eNB can alternatively select the radio bearer of the downstream eNB for association to the EPS bearer based on a quality of service (QoS) class identifier (QCI) of the EPS bearer.

In an ATM cell-relay network usually comprising several switching nodes a method enabling remote surveillance of any entry port to any switching node of the network. The method first assumes that a path is set up from the entry port to a remote observation point. Then, all cells of the incoming traffic, entering entry port to be watched, are duplicated and marked. After which they are transported, unaltered, following the path, up to the observation point. The invention permits that any entry port of an ATM network, that may well span over large geographic areas, be conveniently observable and analyzed transparently i.e., without disturbing users traffic, from a remote location so as network can be maintained and run trouble free.

A method of managing buffers in a SAR (Segmentation and Reassembly) device in a cell-relay network in dynamic bandwidth circuit emulation mode involves reading out TDM data from a buffer at a location determined by a read pointer, and writing data from incoming cells commencing at a buffer location determined by a write pointer. The write pointer is incremented as data from incoming cells arc written into said buffers. On arrival of an incoming cell a determination is made as to the location of said write pointer. If the location of the write pointer lies between a first value equal to the location of the read pointer plus a predetermined maximum lead plus a predetermined DBCES buffer less the number of bytes per active channel and a second value equal to the location of the read pointer plus said predetermined DBCES buffering, an overrun condition is declared. If the location of said write pointer exceeds the location of the read pointer plus the predetermined maximum lead plus the predetermined DBCES buffer, an underrun condition is declared. This method takes into account additional buffering that is required to prevent underruns and overruns when operating in DBCES mode.

The invention discloses a method and a device for uplink transmission time adjustment. The method comprises the steps of adjusting an uplink Tadv, sending an uplink SB to a base station according to the adjusted uplink Tadv and adjusting the uplink transmission time according to a downlink SB sent by the base station. According to the method, the uplink Tadv is adjusted first, then the uplink SB is sent to the base station according to the adjusted uplink Tadv, and finally, the uplink transmission time is adjusted according to the downlink SB sent by the base station. The problem that the cell switching effect is influenced due to low accuracy of the uplink Tadv in the related technology is solved, the reliability of uplink Tadv setting is improved, and the success rate of cell relay switching is improved.