| Patent application number | Description | Published |
|---|
| 20080205351 | Subcarrier Spacing Identification - A cellular communications system that utilizes OFDM in its radio interface is capable of utilizing either a first subcarrier spacing or a second subcarrier spacing. Which of these is presently in use is indicated by generating a first type of synchronization signal in response to the first subcarrier spacing presently being in use, and generating a second type of synchronization signal in response to the second subcarrier spacing presently being in use. Whichever of the first type of synchronization signal and the second type of synchronization signal was generated is transmitted. To distinguish between the first and second types of synchronization signals, a time domain representation of the second type of synchronization signal includes a plurality of instances of the first type of synchronization signal. | 08-28-2008 |
| 20080253336 | Multi-Carrier CQI Feedback Method and Apparatus - A radio base station transmits data symbols to a mobile terminal on multiple frequency carriers, e.g., in accordance with the MC-WCDMA or cmda2000 3x air interface protocols. The radio base station instructs the mobile terminal to report channel quality measurements obtained by the terminal for the multiple carriers over the same uplink channel during successive reporting intervals. According to one embodiment, the mobile terminal reports channel quality by receiving data symbols transmitted on a plurality of frequency carriers in a multi-carrier CDMA environment and measuring channel quality for the different frequency carriers. The mobile terminal reports individual ones of the channel quality measurements over the same uplink channel during successive reporting intervals. | 10-16-2008 |
| 20080318588 | Resource Scheduling in a Cellular System - The invention relates to a method for scheduling resources for uplink transmissions in a radio access network comprising access points which own pre-assigned resources. The invention also relates to an access point ( | 12-25-2008 |
| 20090041240 | UPLINK SCRAMBLING DURING RANDOM ACCESS - The technology described in this case facilitates random access by a user terminal with a radio base station. A user terminal determines one of a first type of uplink scrambling sequences and generates a random access message using the determined one of the first type of uplink scrambling sequences. The random access message is transmitted to the base station. The user terminal receives from the base station a second, different type of uplink scrambling sequence and uses it for subsequent communication with the radio base station. For example, the first uplink scrambling sequences may be specifically associated with the radio base station's cell area or a random access radio channel associated with the radio base station, but they are not specifically assigned to any user terminal, and the second uplink scrambling sequence may be selected from a second set of uplink scrambling sequences specifically assignable to individual user terminals. | 02-12-2009 |
| 20090141700 | TECHNIQUE FOR PERFORMING A RANDOM ACCESS PROCEDURE OVER A RADIO INTERFACE - The invention relates to a technique for performing a random access procedure over a radio interface, for example between a mobile terminal and a radio base station of a mobile network, A method aspect of the invention comprises the steps of transmitting a synchronization request for synchronization information; receiving synchronization information in response to the synchronization request; and transmitting, based on at least one transmission parameter adjusted in accordance with the synchronization information, a resource request for data transmission resources. | 06-04-2009 |
| 20090161599 | METHOD, USER EQUIPMENT AND RADIO BASE STATION FOR RANDOM ACCESS IN A CELLULAR TELECOMMUNICATIONS SYSTEM TECHNICAL FIELD OF THE INVENTION - The present invention relates to a random access process in a cellular communications system and to a user equipment (UE) and a NodeB adapted for performing the process. A problem with the random access is that the time slot for receiving a random access request (RA-request) has a long unused guard portion. When the UE transmits the RA-request, the distance to the receiving NodeB is unknown, and the purpose of the guard portion is to accommodate for propagation delay. The disadvantage is the inefficient use of the random access channel which results in long delays for UEs to access the network. The present invention solves the problem with a method in which the UE position is determined and the distance and propagation delay between the UE and NodeB is calculated before the transmission of the RA-request, and the timing of the transmission is advanced by the propagation delay. | 06-25-2009 |
| 20090207815 | RESOURCE ALLOCATION FOR CO-EXISTING NETWORKS - The present invention relates to methods and arrangements for improving the capabilities of an evolved Universal Terrestrial Radio Access Network, in particular for cases when more than one radio access network applying a time-division duplex transmission mode need to co-exist on a same carrier. The invention addresses further problems concerning an efficient allocation of uplink resources and resource allocation in a handover situation. The present invention assigns an attribute in form of a distinguishing value to the time slots used for the uplink and downlink transmission on said carrier such as to avoid scheduling of transmissions via a first radio access network in downlink or uplink time slots assigned to the second radio access network and to avoid scheduling of transmissions via the second radio access network in uplink time slots assigned for transmissions in the first radio access network. | 08-20-2009 |
| 20090215450 | Technique for Performing a Random Access Procedure Over a Radio Interface - The invention relates to a technique of performing a random access procedure over a radio interface ( | 08-27-2009 |
| 20090258639 | Method, system and device for providing a robust wireless connection - A system and a method for wireless linking in a cellular communication system are disclosed such that a mobile station is maintained in simultaneous communication with at least a first node and a second node for access to the cellular communication system. Information going to and from the first node is not identical to the information going to and from the second node. In one embodiment the second node, or secondary access point is a relay node forwarding received information to and from the first node, or primary access point. In another embodiment the second node is another mobile station performing a direct mobile-to-mobile communication (MS-to-MS). In still an embodiment a first wireless link to the first node is for control information only. In still a further embodiment a second wireless link to the second node is only for communication of information from the mobile station or only for communication of information to the mobile station. | 10-15-2009 |
| 20090268692 | METHOD AND DEVICE FOR COMMUNICATING A SIGNAL - A communication unit and a method for communicating at least one signal over a channel of a first channel type and at least one signal over a channel of a second channel type, which is different from the first channel type. The apparatus comprises a timer adapted to schedule a predetermined time period, during which interference due to simultaneous communication of signals over the channel of the first channel type and the channel of the second channel type is anticipated. Also, the apparatus comprises a processing unit adapted to apply, during the predetermined time period, an interference counteracting process for counteracting interference between any signal communicated over the channel of the first channel type and any signal communicated over the channel of the second channel type. The interference counteracting process comprises changing, during the predetermined time period, from a first to a second format for representing information transmitted over the channel of the first channel type, the second format being more robust than the first format. | 10-29-2009 |
| 20090316659 | Identifying Multi-Component Carrier Cells - Methods and apparatus for generating and determining multi-component carrier cells, without the use of neighbor-cell lists, are described. Methods for generating and informing a communication system terminal about other component carriers belonging to a certain cell identity (ID), and methods and apparatus for a mobile terminal utilizing extended synchronization information for doing multi-component carrier cell search are described. Also, methods for multi-component carrier measurements and methods of reporting such measurements to a network are described. | 12-24-2009 |
| 20090323629 | Secondary Synchronization Sequences for Cell Group Detection in a Cellular Communications System - Timing parameters and an identity of a particular one of a number of cell groups are indicated in a signal transmitted in a cellular communication system having a radio frame in a physical layer, the radio frame comprising a number of time slots. In a known one of the time slots, a synchronization signal, S | 12-31-2009 |
| 20100008310 | Method and Arrangement in a Telecommunication System - A network informs a user equipment about the number of usable sub-carriers in a frequency spectrum. Based on this, and its knowledge of a generic size of a resource block, the user equipment is able to determine a number of sub-carriers that are to be allocated to one or more fractional resource blocks. Rules, which may be predefined in the standard, or may be signalled to the user equipment, allow the user equipment to determine which of the usable sub-carriers should be allocated to the fractional resource block or blocks. | 01-14-2010 |
| 20100097972 | Detection and Efficient Use of Broadcast-Only Modes of Cellular Communication System Operation - Operation of a network node in a mobile communication system that serves a User Equipment (UE) includes ascertaining whether the network node is operating in a broadcast-only mode. If so, then broadcast channel information is transmitted on a physical multicast/broadcast channel. Otherwise, the broadcast channel information is transmitted on a physical broadcast channel. To inform the UE of where to find the broadcast channel information, the network node transmits an indicator to the UE, wherein the indicator indicates whether the broadcast channel information is conveyed via the physical broadcast channel or the physical multicast/broadcast channel. The indicator can be included within signals that are also used to enable a UE's cell search procedure. | 04-22-2010 |
| 20100118706 | Information on Reference Signal Structure for Neighboring Cell Measurements - The present invention relates to cellular radio communication and in particular to providing information on neighbour cells to enable terminals to perform neighbour cell measurements. In the prior art the terminal attempts to make neighbour cell measurements in a reference signal structure that is the same in the neighbour cell as in the cell the terminal camps in. The present invention is based on the insight that the reference signal structure may differ between neighbouring cell for example in the situation of an MBSFN area that is restricted to a region of all cells of a radio network, or in the situation of TDD mode being applied there may be different regions with different allocation of sub-frames for transmission in the uplink and downlink directions. The present invention solves the problem by broadcast information in a cell indicative of the reference signal structure in neighbour cells. | 05-13-2010 |
| 20100128683 | ORTHOGONAL REFERENCE SIGNALS WITH DIFFERENT BANDWIDTH AND OVERLAPPING SPECTRUM - The present invention provides a method of generating mutually orthogonal reference signals for different user terminals in and OFDM system that span different but overlapping subcarriers. The subcarriers allocated to the user terminals are divided into a plurality of non-overlapping subcarrier blocks. Each user terminal is then allocated one or more subcarrier blocks. For each subcarrier block, a user terminal is assigned a reference signal comprising a base reference sequence and a linear phase rotation. To ensure mutual orthogonality among all user terminals, user terminals allocated the same subcarrier block use the same base reference sequence with different linear phase rotations. | 05-27-2010 |
| 20100238892 | UPLINK POWER CONTROL METHOD IN A TELECOMMUNICATIONS NETWORK SYSTEM THAT SUPPORTS BOTH COMMON AND SEPARATE TPC COMMANDS - A transmit power control (TPC) method and a user equipment (UE) of a telecommunications network utilizing the TPC method. The UE receives TPC commands intended for traffic and control channels. The TPC commands are separately identified by logical or physical resources associated with the channels. When the traffic and control channel TPCs occupy the same resources, the UE applies common power control commands to the traffic and control channels. When the traffic and control channel TPCs occupy different resources, the UE applies separate power control commands to the traffic and control channels. | 09-23-2010 |
| 20100248750 | Paging in a Radio Access Network, Such As An E-UTLRAN - The present invention relates to methods and arrangements of a network node and a UE of a radio access network supporting discontinuous reception, offering a solution that is based on the idea to use more than one sub frame for transmitting paging messages when needed. An indicator in a sub frame with paging messages indicates to the receiving UE if the subsequent sub frame should be read as well. | 09-30-2010 |
| 20100278082 | METHOD AND ARRANGEMENT IN A TELECOMMUNICATION SYSTEM - The present invention relates to a method and a radio base station for generating and assigning a different DL/UL transmission pattern to each terminal of a set of mobile terminals, which mutually unique patterns allow each terminal to receive downlink system information thereon. | 11-04-2010 |
| 20100285830 | Uplink Power Control for Power Limited Terminals - Transmit power control methods and apparatus are disclosed. In several embodiments, a mobile terminal ( | 11-11-2010 |
| 20100296547 | METHOD TO MODIFY THE FREQUENCY HOPPING SCHEME BY EXTENDING THE VALIDITY OF THE REFERENCE SIGNALS - The present invention increases the interference diversity in systems with the frame structure described above by using frequency hopping sequences that are selected considering characteristics of the channel relating to how the channel varies. According to a first embodiment, the channel characteristics relate to channel coherence time and according to a second embodiment, the channel characteristics relate to channel coherence bandwidth. For channels with long coherence times, the transmission hops back and forth several times during a TTI on the different available frequencies. For channels with widecoherence bandwidths, hopping may be performed between the frequency used by the reference signals and its neighbor frequencies. For channels with both long coherence times and widecoherence bandwidths, a combination may be used. | 11-25-2010 |
| 20100297991 | Transmission of System Information on a Downlink Shared Channel - In one embodiment, a method of transmitting system information on a down link shared channel structured as successive subframes includes transmitting ( | 11-25-2010 |
| 20100315963 | Measurement of Cell-Specific Reference Symbols in the Presence of MBMS Single Frequency Network Transmissions - A network unit of an own cell is operated in a radio communication system utilizing a radio interface that includes a radio frame made up of a number of sub-frames. The own cell serves one or more user equipments. Operation includes obtaining information about a scheduling of MBSFN data transmissions in one or more neighboring cells. The information thereby obtained is used to generate an information signal that, for a given sub-frame, enables the one or more user equipments to determine whether neighboring cell measurements can be performed using a unicast group of Orthogonal Frequency Division Multiple access (OFDM) symbols. The information signal is transmitted to the one or more user equipments, which can then use the information to determine how to locate cell-specific reference symbols when doing measurements of neighboring cells. | 12-16-2010 |
| 20110007728 | Broadcast Channel Timing Detection - A broadcast control channel (BCH) transport block is communicated in a cellular communications system having a physical layer in which information is communicated in one or more frames, wherein the BCH transport block represents BCH information. This involves coding ( | 01-13-2011 |
| 20110065468 | LOCALIZED AND DISTRIBUTED TRANSMISSION - The available transmission resources on a downlink-shared channel are divided into resource blocks, each resource block comprising a predetermined number of sub-carriers during a predetermined time period. The resource blocks are subdivided into localized resource blocks and distributed resource blocks. A user requiring sufficient resources can be allocated a plurality of said localized resource blocks. A user who would require only a small number of said localized resource blocks can instead be allocated subunits of a plurality of said distributed resource blocks. | 03-17-2011 |
| 20110075625 | Method and apparatus for allocating a pilot signal adapted to the channel characteristics - A set of different pilot structures are designed for use in different environments and/or different user behaviours that are expected to occur in a cell. The radio conditions for a user are estimated. Each user is then assigned an area ( | 03-31-2011 |
| 20110086644 | Method and Apparatus for Configuring Sounding Signals in a Wireless Communication Network - The teachings presented herein propose a separation between the configuration of a sounding signal, and the initialization of the sounding signal. In other words, in at least one example embodiment proposed herein, a base station or other controlling entity separates the selection of sounding signal parameters (sounding signal configuration) and the signaling of that configuration information to a mobile terminal from the Ordering” or other initiation of sounding signal transmission. Thus, a mobile station may be sent sounding signal configuration information and subsequently be commanded (implicitly or explicitly) to begin sounding signal transmissions according to the previously provided configuration information. | 04-14-2011 |
| 20110092242 | Signalling Resource Allocation in a Telecommunications Newtork - The present invention provides a method, a radio base station ( | 04-21-2011 |
| 20110103338 | Method and Devices for Providing Enhanced Signaling - Methods and devices for introducing enhanced signals into a wireless environment. The enhanced signals provide for functionality that is not specified in a communication standard corresponding to a standard of a legacy terminal. The enhanced signals can be utilized by a non-legacy terminal. The legacy terminal is incapable of processing the enhanced signals and is unable to detect the presence of the enhanced signals. | 05-05-2011 |
| 20110111785 | TIMING OF COMPONENT CARRIERS IN MULTI-CARRIER WIRELESS NETWORKS - Mechanisms for efficient transmission of large amount of download data from a base station ( | 05-12-2011 |
| 20110128925 | DRX FUNCTIONALITY IN MULTI-CARRIER WIRELESS NETWORKS - Mechanisms to provide independent DRX (discontinuous reception) functionalities for individual carriers of a multi-carrier wireless network ( | 06-02-2011 |
| 20110149813 | FLEXIBLE SUBFRAMES - The technology disclosed provides the ability for a subframe to be configured as a “flexible” subframe. As a result, at least three different types of subframes in a TDD system may be configured: a downlink (“DL”) subframe, an uplink (“UL”) subframe, and a “flexible” subframe. While the DL and UL subframes are preconfigured for each frame instance, the flexible subframes are dynamically allocated to be an uplink subframe in one instance of a frame and a downlink subframe in another instance of the frame. | 06-23-2011 |
