Abstract: An improved method of processing random access procedures, wherein the network receives at least one access burst to allow a network to estimate uplink received timing, the access burst containing at least a preamble, and transmits information for responding to the at least one access burst, while the mobile terminal configures at least one access burst containing at least a preamble and transmits the at least one access burst to allow a network to at least estimate uplink received timing.

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 ?ser 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 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: The present invention provides a method of and a network entity for processing a random access preamble. The network entity comprises a transceiver for receiving an random access preamble; and a processor for determining if the random access preamble is successfully detected, and for determining, in the case where the random access preamble is not successfully detected, if a combined preamble resulting from a combination of the random access preamble with a previous random access preamble received at the network entity prior to reception of the random access preamble and having an identical signature to the signature of the random access preamble, is successfully detected.

Abstract: The present invention provides a method of transmitting on a random access channel in a radio communication system. In a single time slot there are enabled at least two different radio frequencies for transmission on the random access channel. Only one frequency is selected for transmission in the same time slot. A random access preamble is then transmitted on the selected random access channel in the time slot.

Abstract: A base station transmits a random access response in response to a random access request (random access preamble) of a user equipment. The random access response includes information about a time when the random access request is transmitted and sequence number information of the random access request (random access preamble). The user equipment checks whether the received random access response is the response of the random access request transmitted by the user equipment, using the information about the time when the random access request is transmitted and the sequence number information included in the received random access response.

Abstract: A wireless communication system is disclosed. A method for constructing a RACH preamble according to a cell radius of a base station (BS) irrespective of a guard time (GT) and a method for allocating the RACH preamble are disclosed. A method for constructing a preamble of a random access channel (RACH) includes acquiring time-length information of a predetermined cyclic prefix (CP) for each cell radius of a base station (BS), acquiring sequence time-length information of a single sequence or a repeated sequence, and constructing the preamble using the predetermined CP time-length information and the sequence time-length information, irrespective of a time length of a guard time (GT).

Abstract: An improved access attempt procedure for call establishment is achieved by deriving a probability of access transmission as a function of both a priority level for access attempts and a random access cause, and performing link establishment authentication and security control call establishment based upon the deriving.

Abstract: A method of determining random access resources performed by a mobile terminal, the method comprising: receiving information on available random access resources from a network; deciding how to derive the random access resources to be allowed based on default values or information received from the network; measuring received signal quality of at least one of a cell to be accessed and a neighboring cell; and deriving the allowed random access resources based on the deciding and the measuring.

Abstract: A method of coordinating resources for repetition of random access bursts performed by a mobile terminal, the method comprising: determining groups of access slots based on parameters from a network, wherein each access slot is defined by any combination of frequency, time and code, and the access slots are organized according to a frequency pattern; transmitting an access burst on an access slot from a chosen group of access slots; and re-transmitting the access burst on the next access slot from the chosen group of access slots.

Abstract: The disclosure relates to a cellular radiotelephone signal of the type comprising, a principal bidirectional symmetrical channel, comprising a principal uplink path and a principal downlink path, particularly to guarantee transmission of data at low or medium rate and of the signalling information and commands, at least one auxiliary channel working only in the downlink sense, particularly to guarantee the data transmission at high rates, using a multi-carrier technique which gives a distribution of data over time and frequency, with a sub-frame structure. The beginning of at least one sub-frame in the supplemental channel is offset by a time interval of fixed duration which is not zero (?t) with relation to a determined time (t0), fixed in the principal channel, such as to permit a synchronization at the sub-frame level of the supplementary channel in a terminal, by instantaneous detection of said determined time (t0) and addition of said time interval (?t).

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 changing a radio access configuration between a terminal and a network. The network performs the steps of: initiating a new configuration that is related to an old configuration for the same terminal; informing the terminal to apply the second configuration; and determining when the terminal uses the second configuration based on the reception of a radio signal from the terminal. The terminal performs the steps of: receiving information to apply a new configuration; transmitting, to the network, a radio signal indicating a change in configuration; and changing from an old configuration to the new configuration at a predetermined time after transmitting the radio signal.

Abstract: A terminal random access procedure is improved by allowing a mobile terminal to correctly map signature indexes onto cyclic shifted Zadoff-Chu (ZC) sequences when the deployed cells support a high-speed mobility by informing a mobile terminal whether a cell supports high-speed mobility.

Abstract: A procedure for RACH initial access in a mobile terminal is provided such that necessary information is conveyed the for the initial access procedure with less overhead. The method allow an accurate choice of the uplink transport format by allowing the mobile terminal to determine by itself whether a certain transport format may be used for the transmission of a message prior to the first preamble transmission and prior to the power ramping.