Patent application number | Description | Published |
20110200032 | METHODS AND ARRANGEMENTS IN RADIO COMMUNICATION SYSTEMS - Methods and arrangements for adjusting timing of transmissions in a radio communication system in which aggregation of component carriers is employed are disclosed. A base station sends a first TA command applicable to a first component carrier to a user equipment. A need to maintain different uplink transmission timing for the first user equipment component carrier and second uplink component carrier is detected by the base station. The base station then sends a second TA command based on the detected need to maintain different uplink transmission timing. The second TA command is applicable to uplink transmissions on the first component carrier and/or the second component carrier. The user equipment adjusts uplink transmissions on the first component carrier and/or the second uplink component carrier based on the second timing advance command. | 08-18-2011 |
20120087317 | Methods of Providing Power Headroom Reports Arranged In Order of Component Carrier Indices and Related Wireless Terminals and Base Stations - Power headroom reports may be transmitted from a wireless terminal to a base station wherein a primary component carrier and at least one secondary component carrier are provided for uplink transmissions from the wireless terminal to the base station and wherein a respective component carrier index is assigned to each of the at least one secondary component carriers provided for the wireless terminal. Respective power headroom reports may be generated for the primary component carrier and for each of the at least one secondary component carriers, and a MAC control element may be generated including the power headroom reports for the primary and secondary component carriers. More particularly, the power headroom reports for each of the at least one secondary component carriers may be arranged in order of the component carrier indices for the respective secondary component carriers. The MAC control element including the power headroom reports for the primary and secondary component carriers may be transmitted from the wireless terminal to the base station over one of the component carriers. Related wireless terminals, and base stations are also discussed. | 04-12-2012 |
20120172079 | Methods and Apparatuses for Enabling Power Back-Off Indication in PHR in a Telecommunications System - The exemplary embodiments describe a method for use in a user equipment ( | 07-05-2012 |
20120281680 | Prohibition Of Sounding Reference Signal Transmission On Newly Activated Secondary Cells - In a wireless network supporting aggregation of uplink component carriers, sounding reference signals, SRS, are transmitted ( | 11-08-2012 |
20120302173 | Power Headroom Control Element, Method of Communicating Power Information from a User Equipment, Method for Processing Received Power Information as Well as a Corresponding User Equipment and Base Station - The present invention relates to a power headroom control element for communicating power information from a user equipment (UE) to a base station (BS), a corresponding method, a method for processing received power information at a radio access network (RAN) as well as to a user equipment for communicating power information and a base station configured to process received power information, which particularly enable simple handling and processing of transmission power information, respectively. A power headroom control element is structured to comprise a power headroom field containing power headroom information and having a predetermined number of bits in the power headroom control element, and an indicator field associated with the power headroom field, wherein the indicator field serves to indicate whether a transmission power field with a predetermined number of bits is present in the power headroom control element. | 11-29-2012 |
20130010587 | Methods and Arrangements in a Telecommunication System - The present invention relates to a method and arrangement for controlling re-transmission in a user equipment supporting uplink spatial multiplexing. The method comprises the steps of
| 01-10-2013 |
20130010711 | Random Access with Primary and Secondary Component Carrier Communications - The invention relates to random access procedures in an LTE-system applying carrier aggregation, in particular to support network-initiated random access on secondary cells. A UE transmits a preamble on a random access channel to a radio base station on a secondary cell and receives or detects a random access response message from the base station including timing advance information for uplink transmission by the UE. The UE can determine the secondary cell that the control information in the random access response message refers to and transmits to the base station based on the timing advance information in the random access response message. | 01-10-2013 |
20130034085 | Medium Access Control Timing Advance Group Assignment - In a method for assigning serving cells of a mobile terminal to timing advance groups, a network node transmits a Medium Access Control (MAC) control element to a mobile terminal in a wireless communication network. The MAC control element includes a set of first indicators, with each first indicator specifying whether a corresponding serving cell of the mobile terminal is to be included in a timing advance group. The MAC control element also includes at least one second indicator, with each second indicator specifying a timing advance group, and also specifying, via a defined mapping, the serving cell of the mobile terminal to which the timing advance group corresponds. | 02-07-2013 |