Abstract: Method for transmitting data between a base station (310) of a radiocommunication network and a User Equipment (320), UE, by using multiple Component Carriers, CCs. The method comprising: transmitting, on a Primary CC, PCC, an activation/deactivation command to activate/deactivate a Secondary CC, SCC, from the base station to the UE; and after transmission of said activation/deactivation command, delaying transmission of data on the SCC between the base station and the UE by a predetermined delay, the predetermined delay being set to include a time period needed for a UE to perform an RF retuning as a result of an activation/deactivation command.

Abstract: Selective DRX method on multiple CCs for a UE (320), at least one CC being configured with a PDCCH received from a base station (310) and arranged for scheduling resources on a physical shared channel to the UE on said at least one CC respectively and/or on at least one other CC, each CC having a respective active time during which the UE monitors or would monitor the reception of a PDCCH on said CC respectively if said CC is or was configured with a PDCCH. It is determined whether at least one CC is configured with a PDCCH arranged for scheduling resources on at least one other CC. If it is, the active time of said at least one CC is adjusted to the longest active time of said at least one CC and said at least one other CC. Otherwise, independent active times are maintained for all CCs respectively.

Abstract: A method and apparatus for enhancement of the random access procedure of a Long-Term Evolution (LTE) system are provided. Enhancements include modeling one cycle in the random access procedure since only one counter is necessary and controlling the delay prior to the preamble transmission in order to reduce conflicts by multiple mobile terminals using the random access channel.

Abstract: A segmented access based signal transmitting/receiving method and a sequence allocating method for the same are disclosed. According to one embodiment of the present invention, a method of transmitting a signal of a user equipment in a communication system includes selecting a channel in accordance with at least one selected from the group consisting of a signal attenuation extent of a downlink signal to the user equipment and a speed of the user equipment from channels differently provided based on at least one selected from the group consisting of the signal attenuation extent of the downlink signal and the speed of the user equipment and transmitting the signal using the selected channel.

Abstract: The present invention provides a method of determining capability of a UE, the method comprising: receiving an indication from a UE during a random access procedure, the indication enabling antennae capability of the UE to be determined; processing the indication in order to determine the number of antennae of the UE; and allocating resources to the UE according the antennae capability of the UE. The invention further relates to a user equipment and a network entity operable to implement such a method.

Abstract: A mobile terminal random access procedure is provided for obtaining uplink time synchronization and access to a network by optimizing the allocation of cyclic shifted Zadoff-Chu sequences with Zero Correlation Zone (ZC-ZCZ) as part of dedicated signatures for contention-free uplink radio access channels (RACH).

Abstract: A method for transmitting a random access preamble to a base station at a user equipment (UE) includes generating the random access preamble from a Zadoff-Chu sequence having a length ‘N’ and a root index ‘M’, wherein the random access preamble is defined by a cyclic shift of the Zadoff-Chu sequence and transmitting the generated random access preamble to the base station via a random access channel, wherein the cyclic shift is given by using a variable corresponding to a Doppler shift of one subcarrier spacing, the variable given by using the root index ‘M’, and wherein the cyclic shift is differently given based on whether the variable is smaller than ? of the length ‘N’.

Abstract: A method for establishing a cyclic shift sequence to provide against the frequency offset is disclosed. The method calculates a distance between a channel response position of the sequence and an alias channel response position caused by a frequency offset, calculates the number of cyclic shifts per group according to the calculated distance, and establishes the cyclic shift (CS)—applying interval. This method easily establishes a cyclic shift (CS) interval at a specific location having no overlapping by considering a channel response of a reception (Rx) sequence and an alias location of this reception (Rx) sequence, although a reception (Rx) signal is shifted by a channel delay spreading or a propagation delay irrespective of categories of a domain generating a sequence, so that it can greatly reduce the number of the detection errors and the false alarm rate.

Abstract: According to one embodiment, a method of requesting a random access connection between a mobile terminal and a base station includes: receiving, by the mobile terminal, information comprising at least one signature root sequence index, a cyclic shift parameter, and a number of signatures used for representing a boundary between a first signature set and a second signature set; preparing, by the mobile terminal, random access signatures according to the at least one signature root sequence index and the cyclic shift parameter, wherein at least one of the random access signatures is associated with the first signature set and the remaining of the random access signatures are associated with the second signature set; and selecting, by the mobile terminal, a random access preamble from the first signature set or the second signature set based on a message size and a radio condition.

Abstract: A method and apparatus of transmitting signals for segmented access in a communication system is disclosed. The method for transmitting signals from a user equipment in a communication system includes the steps of selecting a predetermined channel structure depending on location of the user equipment among available channels defined differently depending on the location of the user equipment within a cell, and transmitting signals using the selected channel structure. Also, a method for transmitting signals using sequences allocated differently depending on location of a user equipment within a cell is disclosed.

Abstract: The disclosure relates to a method for managing aggregation of component carriers between an e Node B and a user equipment, which comprises providing a first set of configured component carriers and a second set of activated component carriers. The disclosure also relates to the corresponding e Node B and user equipment.

Abstract: Methods for allocating and choosing dedicated signatures for random access are provided. Options for allocating dedicated signatures include allocating the dedicated signatures from unused space of a random signature root index when there is unused space and allocating more dedicated signatures from the same root index using the same time/frequency resources if additional signatures are needed, and reserving some preambles from contention-based random access preambles from both sets of preambles. The dedicated signatures may be reserved in each of two sets of preambles.

Abstract: A method of selecting signatures for a random access in a wireless communication system is presented. The method includes receiving information comprising at least one root sequence index, a cyclic shift parameter, and a configuration parameter that corresponds to different power metric threshold values, providing at least one root sequence table for random access transmission according to the configuration parameter, and accessing the at least one root sequence table is accessed to generate a predetermined number of signatures for accessing the base station, the at least one root sequence table accessed according to the at least one root sequence index and the cyclic shift parameters, wherein the root sequence table comprises a plurality of root sequences arranged in first and second root sequence groups.

Abstract: A method for establishing RACH transmission to prepare against the frequency offset is disclosed. The method reduces the length of the RACH preamble even if the frequency offset exists, allows the RACH preamble to include a repeated structure (also called an iterative structure) or to use a specific sequence with less affect on the frequency offset, so that the Node-B can easily detect the RACH preamble. If different conditions are established in a high-speed UE and a low-speed UE, an amount of system overheads can be reduced as compared to another case in which an overall RACH condition has been prescribed for only the high-speed UE irrespective of the low-speed UE. And, the method determines whether the user equipment (UE) can estimate its speed according to the aforementioned RACH setup condition, and prescribes a detailed RACH access method according to the determined result.

Abstract: The present invention provides a method of allocating a frequency parameter for random access preamble transmission. The method includes determining a fixed location, in an operating bandwidth, of a frequency region for random access transmission wherein a relative location parameter defines the fixed location of the frequency region according to a bandwidth parameter, the relative location parameter being common to a plurality of cells. The present invention further provides a method of allocating a frequency parameter for random access transmission. The method comprises allocating a fixed location, in an operating bandwidth, of a frequency region for random access transmission, wherein the fixed location is configurable per cell.

Abstract: A method of generating random access preambles includes receiving information on a source logical index and generating random access preambles in the order of increasing cyclic shift from root ZC sequences with the consecutive logical indexes from the beginning of the source logical index until a predetermined number of the random access preambles are found, wherein the consecutive logical indexes are mapped to root indexes of the root ZC sequences.

Abstract: A method of and apparatus for allocating radio resources to a UE according to the capability of the UE, wherein the radio resources to be allocated include a set of radio resources which are incompatible with a first type of UE and are compatible with at least a second type of UE, the method comprising: receiving a random access preamble from a UE; transmitting a first random access response assigning a first set of radio resources compatible with the first type of UE, and a second random access response assigning a second set of radio resources incompatible with the first type of UE; wherein the first random access response is scheduled differently in time and/or frequency to the second access response; receiving a connection request message from the UE; wherein, if the connection request message is received on the first set of radio resources it is determined that the UE is a UE of the first type; and wherein if the connection request message is received on the second set of radio resources, it is determine

Abstract: A signal mapping method and a signal transmission method applying a subcarrier shift method are described. A signal mapping method using shifted subcarriers includes shifting positions of data subcarriers by as much as a frequency band corresponding to half of spacing between data subcarriers on a frequency axis, and shifting positions of random access preamble subcarriers by as much as a frequency band corresponding to half of spacing between the data subcarriers and to a specific ratio of spacing between the random access preamble subcarriers, and mapping data and a random access preamble to the data subcarriers and the random access preamble subcarrier, respectively. Even when the spacing between the data subcarriers is a multiple of the spacing between the random access preamble subcarriers, DC distortion can be minimized.

Abstract: A method for a user equipment to transmit a random access preamble sequence to a base station includes transmitting the random access preamble sequence generated from a Constant Amplitude Zero Auto Correlation (CAZAC) sequence to the base station, wherein the CAZAC sequence is cyclic shifted according to one of applicable cyclic shift values defined considering a value (M) representing a Doppler shift of one subcarrier spacing and a cyclic shift unit length (T), and wherein when the value (M) meets a condition of ‘P*T?M <(P+1)*T’ where (P) is an integer, one or more adjacent cyclic shift values among the applicable cyclic shift values are defined as a group and a number of the adjacent cyclic shift values within the group equals to (P).

Abstract: A cellular radiotelephone signal is disclosed of the type that includes a main symmetrical bi-directional channel comprising a main up-link and a main down-link for the low- or medium-speed transmission of signaling and control information and data; and at least one supplementary channel which is assigned solely to the down-link and which is intended for high-speed data transmission using a multi-carrier technique, which ensures that the data are distributed over frequency/time space and which is structured in the form of pre-defined entities. Each entity contains a pre-determined number of symbols. At least one symbol from each entity of the supplementary channel includes a position identifier, which can be used to identify the position of the symbol within the entity, such that a terminal can read the symbol position identifier and deduce therefrom the start of the next entity, thereby obtaining synchronisation at the relevant entity of the supplementary channel.