545 results about "Cell identity" patented technology

In a radio access network (24) a femto radio base station (28_f) comprises a resident receiver (54) which acquires system information broadcast in a radio access network (24). At least part of the system information is used for building, at the femto radio base station (28_f), a neighbor data structure (59) comprising information for neighboring cells. The neighbor data structure (59) is then used for building a neighbor list. The neighbor list is subsequently transmitted from the femto radio base station (28_f) to a user equipment unit (30) served by the femto radio base station (28_f). In some example embodiments and modes, the femto radio base station (28_f) reports the neighbor data structure to a network node (26, 100) other than the femto radio base station. The other node (26, 100) uses the neighbor data structure for building the neighbor list at the other node. In some example embodiments and modes, acquisition of the system information comprises scanning a surrounding macro coverage area of the femto radio base station for obtaining cell identity information for detected cells. In other example embodiments and modes, the acquisition of the system information can additionally comprise camping on a macro cell and using/consulting at least one system information block in the camped-on macro cell is consulted/used for obtaining information about at least one neighboring cell.

Methods and apparatus for transmitting and receiving Downlink Control Information (DCI) in a single cell in order to support communication over multiple cells. The DCI is conveyed by DCI formats transmitted through Physical Downlink Control CHannels (PDCCHs) in a UE-Common Search Space (UE-CSS) and in a UE-Dedicated Search Space (UE-DSS). A distinct UE-DSS is defined in the single cell for each of the multiple cells. Each distinct UE-DSS has the same structure as a conventional UE-DSS and a location that is determined by the same parameters as the location of the conventional UE-DSS and by the respective cell identity (Cell_ID).

PCT No. PCT/SE96/00210 Sec. 371 Date Aug. 15, 1997 Sec. 102(e) Date Aug. 15, 1997 PCT Filed Feb. 16, 1996 PCT Pub. No. WO96/25830 PCT Pub. Date Aug. 22, 1996The position of a mobile station in a cellular mobile telephone system, particularly a GSM system, is determined by carrying out a simulated call setup, i.e., the call setup is interrupted subsequent to a telephone switching center (MSC) having received a paging response containing the identity of the cell and, optionally, a timing advance. The simulated call setup is initiated by generating a modified short message signal (SMS) which is not registered in the SMS catalogue of the mobile station and which is not shown to the user of the mobile station. The SMS commands the mobile station to carry out a position determining sequence in order to establish parameters for use in establishing the position of the mobile station, for example by commanding the mobile station to connect itself to a base station contained in its neighbor list, analyze the geographical position of the base station, and subsequently send the position determining parameters to a position handler. The geographical position of the base station is analyzed from the cell identity and, if available, the timing advance, the position of the mobile station being presented graphically on a picture screen and constantly updated after each call setup. The call setups are generated by the position handler.

The present invention relates to a cellular communications network and in particular to the problem of identifying cells for neighbor lists, or handover candidates when the cells are identified by a limited number of non-unique identities. The present invention includes a method for a radio base station, wherein the base station receives reports from one or more terminals in neighbor cells quality and non-unique identities. The match is sought in a neighbor cell list non-unique identity with a unique cell identity. If the match cannot be made without ambiguity, the base station causes the terminal to detect the unique cell identity. If the reason for the ambiguity is the particular cell is not included in the neighbor cell list it is included when its unique identity has been established. The uniquely identified cell is used if it is determined to perform a handover.

The invention provides a method and a system for sending a measurement reference signal. The invention adopts the technical scheme that the configuration information of a relay station for sending a measurement reference signal is set in a base station, and the relay station is used for generating the measurement reference signal and sending the generated measurement reference signal according to the received configuration information for sending the measurement reference signal, wherein the configuration information is used for the relay station for determining the sub-frame position information sent by the measurement reference signal, and the measurement reference signal of the relay station and the measurement reference signal of the base station are sent in a time division mode. Through the technical scheme, the scheme of issuing the configuration information by the base station and sending the measurement reference signal by the relay station is provided in an LTE-A (Long Term Evolution-Advanced) system of the relay station without an independent PCID (Physical Cell Identity), thereby realizing the measurement of channel conditions from the relay station to a UE (User Equipment) link of the UE. The invention also provides the base station and the relay station, which realize the method for sending the measurement reference signal.

A system and method for physical cell identity assignment in a wireless communication system includes a first step 500 of starting up a new cell in the communication system. A next step 502 includes allocating a temporary operating frequency for the new cell. A next step 506 includes building a list of physical cell identity assignments being used by neighbouring cells. A next step 508 includes configuring the new cell with a permanent physical cell identity assignment that is not being used in the list.

The invention discloses a method for distributing physical cell identifiers, which comprises the following steps: acquiring information on neighbor cells of a newly activated cell, wherein the information on the neighbor cells comprises physical cell identifiers PCI of the neighbor cells and the neighbor cells comprise cells having frequencies different from that of the newly activated cell; and acquiring the PCI selected by the newly activated cell according to the acquisition of the information on the neighbor cells. The embodiment of the invention also provides a base station. The method and the device can be used for the automatic distribution of the PCIs in a multiple frequency scene.

The embodiment of the invention discloses a measuring method, a device and a system of a neighbouring cell. A neighbouring cell list updating method comprises the following steps: non-dedicated connection status terminals receive automatic neighbouring cell relation optimization indication messages sent by network equipment; cells which are not in a neighbouring cell list are measured, and/or the global cell identifications of the cells which are not in the neighbouring cell list are read according to the automatic neighbouring cell relation optimization indication messages. For the terminals executing business, the neighbouring cell measurement and task reporting do not need to be executed by applying the technical scheme of the embodiment of the invention, thereby avoiding the influence on the business in the process of updating the neighbouring cell list.

A communication system which performs communication between a base station device configuring at least one cell and a mobile station device, wherein: the base station device includes: a synchronization signal generation unit which generates a synchronization signal corresponding to a cell identity for identifying a cell; and a transmission unit which generates a first transmission signal including the synchronization signal using a first parameter obtained from the cell identity, generates a second transmission signal excluding the synchronization signal using a second parameter obtained from a virtual cell identity different from the cell identity, transmits the first transmission signal using a first frequency band, and transmits the second transmission signal via a second frequency band different from the first frequency band. The mobile station device includes: a reception unit which receives a first reception signal including the synchronization signal using the first parameter obtained from the cell identity via the first frequency band and receives a second reception signal using the second parameter obtained from the virtual cell identity via the second frequency band.

A method, system, and computer program product that provides a two-index system for clusters of small cells in a wireless network. A first index is employed for access to and identification of a serving cell within a cluster of small cells. A second index indicates a group of small cells for determining mobility control. The first index may be derived from primary/secondary synchronization signals, or from frequency/time division multiplex signal position. The second index may be indicated in system/master information block signals or predefined as a plurality of small cells identified by the first index for each cell. Determination of physical cell identification is aided by providing a plurality of primary/secondary synchronization (PSS/SSS) signal alternating configurations with indicator, wherein a maximum number of configurations is predefined. Signaling the PSS/SSS configurations by one of broadcast or dedicated signaling, said signaling indicating whether each configuration is one of periodic or aperiodic alternation.

The embodiment of the invention discloses a method and a device for scrambling positioning reference signals and belongs to the field of communication. The method comprises the following steps of: acquiring a time slot serial number ns, an orthogonal frequency division multiplexing (OFDM) symbol serial number l, a cell identity cyclic prefix (CP) length identity network control protocol (NCP); acquiring frequency shift information vshift of the positioning reference signals (PRSs); acquiring a scrambling sequence according to the acquired ns, l, NCP and vshift; and scrambling the PRSs according to the scrambling sequence. The device comprises an information acquisition module, a scrambling sequence acquisition module and a scrambling module. In the technical scheme provided by the embodiment of the invention, the scrambling sequence of the generated PRSs has higher randomness by using the frequency shift information as an element of the scrambling sequence, the mutual interference among the PRSs received by user equipment (UE) at the same time is reduced, and the positioning precision of the UE is improved. A register of a Gold sequence is fully used, and the waste of resources is reduced.

A wireless communications device with a wireless module and a controller module is provided. The wireless module performs wireless transmission and reception to and from a service network comprising at least two first home base stations having the same physical cell identity (PCI) or physical scrambling code (PSC), a plurality of second home base stations neighboring the first home base stations, and a macro base station. The controller module receives a message from the macro base station via the wireless module, requests the wireless module to detect a plurality of PCIs or PSCs respectively corresponding to the first home base stations and the second home base stations in response to the message, and transmits to the macro base station via the wireless module the detected PCIs or PSCs, prior to being handed over to the one of the first home base stations from the macro base station.

The invention provides a method for cell identity authentication through a mobile terminal and the mobile terminal. The method comprises the steps that the mobile terminal stores cell information; the cell information comprises data records of cells which the mobile terminal had access to; the data record of each cell comprises identifying information of the cell and identifying information of another cell adjacent to the cell; when the mobile terminal needs to reselect the cells, the identifying information of all target cells is matched with the identifying information of the adjacent cells in the data record of the cell where the mobile terminal is located currently; only the target cells which are successfully matched are reported to a base station. By means of the method, a pseudo base station can be identified easily and effectively at the time of terminal switchover.

A method of handling identity confusion for a network in a wireless communication system is disclosed. The method includes receiving from a first mobile device a radio resource control (RRC) connection reestablishment request message including a physical cell identity corresponding to a source cell of the first mobile device, and sending a RRC connection reestablishment reject message in response to the RRC connection reestablishment request message and a RRC connection release message according to a cell-level identity of the mobile device corresponding to the source cell.

Embodiments of the present invention provide a method and a device for reporting cell information and adjusting a cell mobility parameter. The method for reporting cell information includes a connection failure occurring on a terminal and re-establishing a radio resource control RRC connection with a cell by the terminal. A cell identity of a neighboring cell of a source cell and event information of the neighboring cell that is recorded by the terminal before the connection failure occurs is sent by the terminal to a base station that controls a cell where the RRC connection is re-established. Technical solutions provided in embodiments of the present invention may help improve the accuracy of mobility parameter adjustment on a network side and further improve the terminal handover efficiency.

The invention provides a determination method for a voice service scheme of a VoLTE (Voice over Long Term Evolution) terminal and the VoLTE terminal. The method comprises the following steps: reselecting from a 2G/3G (Two-Generation/Three-Generation) cell to an LTE cell by the VoLTE terminal according to cell signal intensity measured in a preset range; if a reselected LTE cell identity is stored at the VoLTE terminal, transmitting a first position updating request to a mobile management entity MME by the VoLTE terminal, wherein a VoLTE voice service scheme restriction identity is carried in the first position updating request, so an IMS (IP Multimedia Subsystem) unregistration request message of the VoLTE terminal is transmitted to an IMS by a home subscriber server HSS according to the VoLTE voice service scheme restriction identity carried in a first position updating message; receiving, by the VoLTE terminal, an IMS unregistration success response message transmitted by the IMS; determining circuit switched fallback CSFB according to the IMS unregistration success response message to serve as the voice service scheme of the VoLTE terminal to perform the voice service.

The invention relates to the wireless communication technology, in particular to a method, a system and a device for determining CoMP participating cells for solving the problem of large amount of signaling overhead required for informing a user terminal of cell identifier of each cell in the cells participating in the CoMP when an LTE-A system performs the CoMP in the prior art. The method of the embodiment of the invention comprises the following steps of: sending the cell identifier of each cell in a determined measurement cell basic set to a terminal through a network side, determining a CoMP participating cell set in the measurement cell basic set, determining index information corresponding to each cell identifier in the CoMP participating cell set, and sending the determined index information to the terminal to indicate the terminal to determine CoMP participating cell identifier from the measurement cell basic set according to the received index information. The method of the embodiment of the invention can reduce the signaling overhead and improve the utilization rate of system resources.

A method for performing mobility by a user equipment (UE) in a wireless communication system is provided. The method includes: receiving Physical layer Cell Identity (PCI) split information from a network, the PCI split information indicating a predetermined set of at least one PCI reserved for a predetermined cell type; receiving system information from at least one candidate cell, the system information comprising a PCI for each cell; measuring the at least one candidate cell; determining whether to apply the PCI split information for selecting a target cell; selecting the target cell; and performing the mobility to the target cell. If it is determined that the PCI split information is applied, the step of selecting the target cell includes: excluding at least one cell has a PCI included in the predetermined set; and selecting the target cell among at least one remaining cell.

A method for updating a data base which includes positioning data and identity information of a cell, the method comprising receiving a position of a device and receiving identity information of a cell. The data base is examined to find parameter information relating to the received identity information. The parameter information is retrieved from the data base. It is determined whether the data base is to be updated with the position data of the device, wherein if it is determined that the data base is to be updated, the updating of the data base is performed by using the position data of the device and the value of an updating parameter is updated.

The invention provides an inter-base-station cell switching method and system. The method includes that a source cell sends an inter-base-station cell switching request when a target cell determined according to signal quality detecting information reported by UE is a neighbor cell of the source cell and is in the same base station of the source cell; the target cell receives the inter-base-station cell switching request, reserves resource required by the UE for residing in the target cell and replying switching request confirmation information to the source cell; the source cell receives the switching request confirmation information and sends RRC reconfiguration request information to the UE; the target cell receives reconfiguration completion information sent by the UE, configures an S1 common channel, updates a mark of a cell of the UE newly resides and a UE mark distributed for the UE by the target cell, and sending resource release indication information to the source cell; the source cell receives resource release indication information and performing corresponding resource release operation according to switching state information of the UE. According to the embodiment of the invention, decrease of time delay of switching between cells of the same base station by the UE is realized and the switching performance is improved.

The invention relates to the technical field of communication, and provides a switch control method for wireless networks. The switch control method includes the first step of setting cell type for each cell, and binding the cell types with cell identifications, the second step of detecting the state of terminals, the third step of selecting the target cells through the wireless networks according to the cell types and the state of the terminals, and the fourth step of setting measuring offset parameters according to the cell types of the target cells and the state of the terminals to control the terminals to be switched to the target cells. The switch control method can be used for carrying out switch judgment by combining with the state of the terminals, the types of the target cells and the like, provides a relatively good communication quality guarantee for the terminals with different mobile states, reduces switch call drop rate, and improves perceptibility of users.